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ABCC2(rs717620), and ABCC3 (rs4793665) affect high dose Methotrexate toxicity, and ou...
Amr Yahia
Rania Labib

Amr Yahia

and 6 more

December 22, 2020
Objectives: Osteosarcoma (OS) is one of the aggressive bone tumors commonly diagnosed in adolescents and young adults. The study investigated the effect of 9 single nucleotide polymorphisms (SNPs) in 5 genes on methotrexate (MTX) plasma level and its impact on the patients’ clinical outcomes. Methods: One hundred and thirty-three patients with OS (68 boys and 65 girls with age range 4.00-17.86 years) were enrolled and treated with four weeks of high-dose methotrexate (HDMTX) as neo-adjuvant therapy in children’s cancer hospital (CCHE-57357). Blood samples were collected and genotyped for the studied SNPs (MTHFR rs1801133, SLCO1B1 rs11045879, rs4149081, rs2306283, ABCC3 rs4793665, rs4148412, rs733392 ABCG2 rs2231142, and ABCC2 rs717620 using Taqman® (RT-PCR) assay. Plasma concentrations of MTX were measured using the enzyme multiple immunoassay technique (EMIT®). The clinical outcomes included toxicities that were evaluated based on the common terminology criteria for adverse events - version 5 (CTCAEv5.0.), besides the studying of survival analysis and tumor necrosis (TN %). Results: Older patients experienced increased risk of delayed MTX elimination at 72-hour, OR=1.19 (95% CI=1.09-1.29, p=0.00059). The studied SNPs weren’t associated with MTX elimination. Patients with ABCC2 HW (Homozygous wild) genotype group showed a high statistically significant association with higher grade hyperbilirubinemia, OR= 2.05(95% CI=1.05-4.01, p=0.037). Moreover, the patients with ABCC3 (rs4793665) HV and HT (Homozygous variant and Heterozygous) genotypes had a significant association with severe nephrotoxicity, OR= 0.34(95% CI=1.6-0.72, p=0.005). Conclusions: ABCC2 (rs717620), ABCC3 (rs4793665) genotyping with age and gender could help in predicting patients at risk of toxicities due to HDMTX.
Relevance of topographic control on hydrogeological properties of the weathered grani...
Ashok Kumar

Ashok Kumar

December 22, 2020
Usri, a southward sloping fourth order drainage sub-basin of Barakar river, is located in the northern margin of Chhotanagpur plateau, Giridih, India. Gently sloping undulating landforms devoid of hills and outcrops is main characteristics of this sub-basin. Topographic elevation varies between 310 to 390 m MSL. Geographically it is located between lat 24.38° N to 24.54° N long and 86.07° E and 86.28° E longitudes. Thick weathered horizon developed over homogenous Archean granite-gneiss is the principal unconfined aquifer system. Basement topographic (weathering depth) and water table have been correlated with the surface topographic features (landforms). Presence of considerably thick weathered horizons, devoid of rock exposures, regional uniformity in geomorphic characters and its location at fringe of plateau provides favorable condition for correlation of surface topography with basement topography and water table. It has been observed that basement surface is replica of ground surface only in regional or watershed perspective with reference to common datum. The basement surface is not always exact replica of ground surface at micro watershed scale. In many cases, basement surface is reverse of ground surface. The depth basement has remained constant along the basin water-divide situated near the margin of the plateau. The depth of basement (weathered horizon) is higher in upper reaches than lower reaches on the micro water-divides (upland) as well as in the drainage depressions (channels) within the sub-basin. The upper reaches of the sub-basin mainly along the basin water-divide has better groundwater prospects than lower reaches. There is no definite trend of water table with respect to ground and basement topography. Many places water table is shallow on the micro water-divides (upland) and deep in drainage depressions (channels). The established correlations are likely to be applicable in the other geographical area where similar watershed and geological characteristics exits.
Storm-runoff processes in a mainly waterlogged low mountain range catchment in the na...
Julian Zemke

Julian Zemke

December 22, 2020
This study investigates potential effects of wetland restoration on storm flow dynamics in a mainly waterlogged low mountain range catchment located in SW-Germany. Here, wetland drainage networks are being sealed, aiming to achieve rising soil water tables and reestablished peat vegetation. With the help of hydrograph separation, multiple linear regression (MLR) and covariance analysis (ANCOVA), runoff-governing storm properties and sealing influences were analyzed. Results show, that not only natural storm parameters (precipitation sum, rainfall intensity, antecedent precipitation and temperature) exert influence on storm-runoff, but sealings also led to significantly altered processes: On the one hand, storm-runoff coefficients increased in sealed catchments, resulting most likely from more saturated soils, providing a smaller infiltration capacity. This is a desired effect of rewetting but coincidently a downside regarding storm flood prevention. On the other hand, lag times, meaning the timespan between rainfall occurrence and the hydrograph starting to rise, were noticeably prolonged. This effect potentially can be beneficial when it comes to storm flood prevention. Overall, statistical models including sealings showed more satisfactory results describing stormflow variance compared to models without sealings. Therefore, sealings do exert – statistically proven – an effect on storm runoff. The heterogeneity of the results, representing a dense gauge network spread over an investigation area of roughly 7.5 km² shows, that a high-resolution sampling, both spatially and temporally, is vital. That is since runoff processes in waterlogged low mountain range catchments are still poorly understood.
Water uptake strategies by typical broadleaf and coniferous trees in the Loess Platea...
Weiwen Zhao
Youzhi Han

Weiwen Zhao

and 3 more

December 22, 2020
There are few precipitation events in the Loess Platea area, which may significantly influence water uptake strategies for plant communities, while water source for trees, growing in the Loess Plateau mountain area, are poorly comprehend. We investigated the impacts of precipitation (before and after) on water uptake strategies for typical broadleaf and coniferous trees using hydrogen and oxygen stable isotope techniques in the Loess Plateau mountain area of northern China. Our results indicated that water sources of the two plant species varied before and after rainfall. Robinia pseudoacacia largely absorbed water from 30-40cm (57.8%) soil layers before precipitation and switched its main water source to 20-30cm (58.5%) soil layer after precipitation. Contrary to R.pseudoacacia, Pinus tabuliformis mainly absorbed water from 20-30cm (24.9%) and 10-20cm (21.6%) soil layers before precipitation and changed its dominant water sources to 0-10cm (39.8%) and 10-20cm (44%) soil layer after precipitation. Moreover, the herbaceous of broadleaf plant has the higher complex of the community. On the whole, R.pseudoacacia and P.tabuliformis showed the diverse characteristics of water utilization, which suggests that these two species are suitable for a mixed forest vegetation and our findings provide valuable information for planning long-term ecological afforestation management around the Loess Plateau mountain area of northern China.
Estimation of long-term groundwater storage variation in the Lower Transboundary Indu...
shoaib ali
Qiumei  Wang

shoaib ali

and 6 more

December 22, 2020
In the Lower Transboundary Indus Basin (LTIB), excessive groundwater is being consumed in combination with surface water to meet the increasing demand of irrigation, resulting in groundwater depletion that needs to be quantified. This study used GRACE (Gravity Recovery And Climate Experiment) satellite terrestrial water storage anomalies (TWSA) and Global Land Data Assimilation System (GLDAS) model data to produce monthly groundwater storage anomalies (GWSA) and to evaluate the depletion of groundwater storage in the LTIB. It is observed that the variation in GWSA exhibits a downward trend from 2003 to 2016. Additionally, TWSA and precipitation data depict seasonal characteristics with peaks in the summer and dips in the winter, which reflect variation in GWSA, respectively. GRACE TWSA measurements also detected massive floods that occurred in 2010 and 2015, and they significantly recharged groundwater in the LTIB. This study also utilized Empirical Orthogonal Function (EOF) analysis to assess the variance variability. The results revealed that more than 80% of total variance variability was explained by the first 2 EOF modes. The generalized three-cornered hat method (GTCH) was used to estimate the uncertainty of different GRACE TWSA measurements. The results show that groundwater storage is being depleted at a rate of 4.16 mm per year (2.97 km3 per year). Long-term monthly mean GRACE derived GWSA showed remarkable agreements with PCRaster Global Balance (PCR-GLOBWB) model 75% and WGHM (WaterGap Global Hydrological model) 81%. This study can be helpful to calculate the socio and agro-economic impact of the excessive withdrawal of groundwater.
Variations in runoff, sediment load and their relationship for a major sediment sourc...
Yiting Shao
Xingmin Mu

Yiting Shao

and 3 more

December 22, 2020
Investigation of the variations in runoff and sediment load as well as their dynamic relation is conducive to understanding hydrological regimes changes and supporting channel regulation and fluvial management. This study was undertaken in the Xihanshui catchment, which is known for its high sediment-laden in the Jialing River of the Yangtze River basin, southern China, to evaluate the change characteristics of runoff, sediment load and their relationship at multi-temporal scales from 1966 to 2016. The results showed that the monthly runoff changed significantly for more months whereas the significant changes in monthly sediment load occurred from April to September. The contributions of runoff in summer and autumn and sediment load in summer to their annual value changes were greater. The annual runoff and sediment load in the Xihanshui catchment both exhibited significant decreasing trends (P<0.05) with significant mutation in 1993 (P<0.05). The average annual runoff in the change period (1994-2016) decreased by 49.60% and annual sediment load displayed a substantial decline with a reduction of 77.76% in comparison with the reference period (1966-1993). The variation of the relationship between runoff and sediment load in the catchment was time-dependent. The annual and extreme monthly runoff-sediment relationship could be generally expressed as power function, whereas the monthly runoff-sediment relationships were changeable. Spatially, the relationship between annual runoff and sediment load could be partly attributed to sediment load changes in the upstream and runoff variations in the downstream and it became weaker in the change period due to the impact of existing soil and water conservation measures. Quantitative assessment showed that human activity played a dominant role in annual runoff and sediment load reduction, with the contributions of 67.07% and 87.64%, respectively.
Creating an equitable evidence base for quality and safety in remote antenatal care
Karolina Kuberska
Francesca Dakin

Karolina Kuberska

and 4 more

December 22, 2020
CommentaryCreating an equitable evidence base for quality and safety in remote antenatal careKarolina Kuberska1 (PhD, https://orcid.org/0000-0002-9610-1863)Francesca Dakin1 (MPhil, https://orcid.org/0000- 0000-0002-4105-4617)Mary Dixon-Woods1 (DPhil; https://orcid.org/0000-0002-5915-0041)Christine Ekechi2,3 (MD)Lisa Hinton1 (PhD, https://orcid.org/0000-0002-6082-3151)1THIS Institute (The Healthcare Improvement Studies Institute), University of Cambridge, Cambridge Biomedical Campus, Clifford Allbutt Building, Cambridge CB2 0AH, UK2Consultant Obstetrician & Gynaecologist, Queen Charlotte’s & Chelsea Hospital, Imperial College Healthcare NHS Trust, London, UK3Co-Chair, Race Equality Taskforce, The Royal College of Obstetricians & Gynaecologists, UKCorrespondence to: Lisa Hinton, THIS Institute, University of Cambridge, Cambridge Biomedical Campus, Clifford Allbutt Building, Cambridge CB2 0AH, UK.lisa.hinton@thisinstitute.cam.ac.uk; 01223 331573Shortened title: Equitable evidence base for remote antenatal careCommentaryCreating an equitable evidence base for quality and safety in remote antenatal careBy international standards, pregnancy and childbirth are very safe in the UK. However, when poor pregnancy and birth outcomes happen, they are spread unevenly across the population. Recent reports from confidential enquiries into maternal deaths and morbidity in the UK and Ireland (MBRRACE-UK) reveal a disturbing pattern of increasing inequality.(1) Poor outcomes are associated with ethnicity and adverse socio-economic circumstances. Black women (including African, Caribbean and other Black ethnic backgrounds) are five times more likely to die as a result of complications in their pregnancy than White women.(1) For women of mixed ethnicity, the risk relative to White women is threefold, and for Asian women it is double. Women with multiple disadvantages, such as a mental health diagnosis or experience of domestic abuse, are also over-represented among the women who die.(1)One of the striking features of the current COVID-19 pandemic is its amplification of these and other inequalities. Mortality rates from the coronavirus are highest for Black and Asian ethnic groups. Excess deaths are 4.3 times higher for the Black African population, 2.5 times higher for the Black Caribbean population and as much as 7.3 times higher for the other Black ethnicities than expected for this population under non-pandemic conditions.(2) Pregnancy and childbirth do not seem to escape these effects. The first study to estimate the incidence of admission to hospital with COVID-19 in pregnancy showed the highest proportion of women admitted to hospital were from Black or minority ethnic groups (56%).(3) While the exact reasons are not yet well understood, contributing factors include a higher risk of infection, a higher risk of severe disease, or both – among others.(3)In addressing the challenges of inequality in maternity care, a high-quality evidence-base is essential. However, a well-founded conception of what quality of evidence means is also critical. It is not enough that evidence be technically and scientifically robust, it must also be equitable and inclusive. The need for such an evidence-base is well illustrated by one of the major responses to the imperatives of the pandemic: the rapid introduction of remote care pathways. Without an inclusive body of evidence, there are real possibilities that remote care might compound the problems of marginalisation, disadvantage, and clinical risk for women in some of the most at-risk groups.Antenatal care plays a key role in supporting women and their families during pregnancy and in improving the likelihood of optimal birth outcomes. It warrants particular scrutiny in this respect, given that access challenges are already experienced by some women of minority ethnic backgrounds and those who are socio-economically disadvantaged.(1) An audit of referral delays in antenatal bookings, for example, highlighted inadequate care caused by language barriers and poor understanding of maternity services in the UK, and perceptions of pregnancy care services as a system of surveillance rather than support.(4) The rapid shift to remote antenatal care was an understandable – and rational – response to the imperatives of the pandemic. This included the need to minimise risks of virus transmission and the need to address the complexity associated with suspected or confirmed COVID-19 infection in pregnant women.(5) But the evidence-base for remote antenatal care remains weak. Though some studies examining use of remote technologies in antenatal care pathways have shown promising results in terms of safety and experience,(6, 7) they are not conclusive. Some have assessed remote monitoring of isolated components of maternity care (e.g. self-monitored measurements of blood pressure or glucose levels), rather than the whole care pathway.(8, 9) Other studies have investigated hybrid antenatal care pathways that include, but are not exclusively formed of, components of remote care. (6) How easily these findings can be extrapolated into scenarios where most or all antenatal care is being provided remotely is not clear.A perhaps less obvious problem, but one that is highly consequential for understanding and addressing inequalities, is that the participants in these studies tend not to represent groups who experience, on average, worse maternity outcomes.(1) A significant proportion of the evidence on the effectiveness and safety of remote antenatal monitoring comes from studies with homogeneous populations. Women of minority ethnic backgrounds, refugees, people experiencing homelessness, people with poor fluency in English, or those experiencing domestic abuse are rarely represented. Studies assessing satisfaction with hybrid models, for example, often include only participants who selected this care pathway when offered the choice. The participants tend to be more comfortable advocating for themselves, already have children, be white, have middle to high incomes, and be relatively highly educated.(10)The exclusion of less privileged voices from these studies reflects a more widespread and longstanding “orthodoxy of sameness” in health research.(11) Caroline Criado Perez, in her 2019 book “Invisible Women”, exposed the enduring male default bias in medical research. Clinical trials are especially prone to collecting data mostly from men and extrapolating it on the general population, which results in serious data gaps in many aspects of women’s health. Evidence from maternity care research, while obviously not suffering from lack of data on women in general, may be vulnerable to similarly serious gaps when it comes to data on ethnicity, race and socio-economic status.The current lacunae in the evidence for antenatal care matter: it is not safe to assume that all pregnant women have the same needs, preferences and expectations of care. Anticipating potential unintended consequences based on what is already known leaves systems better equipped both to mitigate negative impacts, and to monitor the consequences for the groups affected.(12) For example, when it comes to introducing telemedicine into antenatal care pathways, it is reasonable to make provisions for instances of technology failures (poor internet connection, insufficient mobile data), disabilities that make it difficult to use the telephone (deafness or being hard-of-hearing), or social factors (digital exclusion or experience of domestic abuse). With these perspectives missing, we simply do not have a good understanding of how well remote care can be optimised for those whose experiences are not usually included in research.The gaps in data on race and ethnicity in health research are especially problematic for who is represented and included, and what that then means for how services are designed, for whom, and with what consequences. Addressing these gaps is hindered by the lack of clarity and understanding around the categories of race and ethnicity and how the definitions (and differences) assigned to them manifest in everyday interactions, research, and policy and practice, depending on context. For instance, in the UK, the categories of “race” (broadly defined by the symbolic colour of a person’s skin or physical appearance) and “ethnicity” (reflecting a historical-cultural or national group a person may identify with) are often merged in a hybrid category of “ethnicity”, which is reductionist and conceals as much as it reveals. For instance, a category such as “Black Caribbean” uses a symbolic skin colour and an ethnically non-homogenous politico-geographic region to indicate a supranational identity that limits insight into potentially highly variable help-seeking behaviours, patterns of access, and quality of care. Thus, even though we know that maternal mortality figures show five times more Black women die than their White counterparts, the Office of National Statistics (ONS) categories we have available to us do not give us the rich detail to understand why this occurs.The broad ONS categories may obscure important ethnic differences that could illuminate our understanding of maternal mortality and morbidity within certain groups. A Black British woman, born in the UK but with a Nigerian ethnic heritage, might not encounter barriers in navigating the health system for her pregnancy. Accustomed to the UK system of healthcare, she might readily engage with antenatal care even when delivered in a remote format. In contrast, a Black Sudanese woman, recently arrived in the UK, might encounter significant barriers in accessing the care she needs. Her cultural heritage may place greater significance on the advice and support of older women in the community rather than from healthcare professionals. She would therefore have lower expectations of the antenatal care system. Both of these women are currently categorised as “Black African.” Their different ethnic backgrounds, however, potentially influence their belief systems and behaviours, and may affect their individual risks of poor maternal outcomes.Problematic as racial and ethnic identities are, capturing these categories as research data is important. Race and ethnicity may be social constructs, but they are real in their consequences, powerfully impacting healthcare access and outcomes in profound ways.(1) Understanding the consequences of race and ethnicity for women accessing healthcare, coupled with a recognition of the significance of socio-economic determinants of health, can help create pathways that address patients’ needs in more nuanced and socio-culturally sensitive ways. Without granular data on who is at greatest risk of severe maternal morbidity and mortality, we are likely to entrench racialised stereotypes without reducing inequalities. It is important to go beyond simple dichotomies (e.g. that imply White and “Other”): we must ask ourselves challenging questions about how to ensure authentic inclusion, the definitions we are using to construct the world we are seeking to describe, and what we are seeking to improve for whom.Given that COVID-19 does not impact all population subgroups in the same way, an understanding of what good remote antenatal care looks like is urgently needed to help shape pathways that offer appropriate support for every pregnant woman. At the same time, as sound evaluation of models of antenatal care – which had to be introduced very rapidly – is urgently needed, such evaluation must be highly attentive to the diversity of experiences and needs. Remote care may be safe for large sections of the pregnant population, but may also create unintended barriers for some. Creating equitable antenatal care pathways requires intentional and sustained effort not only to prevent new harms but also to reduce existing institutional racism and structural inequalities in healthcare. Once the pandemic passes, antenatal care is unlikely to return to pre-pandemic models in its entirety. We have an opportunity to capture what has worked well and to mobilise that learning for the benefit of pregnant women. But it is also vital that the evidence we create is equitable.
Disease-drug and drug-drug interaction in COVID-19: risk and assessment
Devendra Kumar
Neerja Trivedi

Devendra Kumar

and 1 more

December 22, 2020
COVID-19 is announced as a global pandemic in 2020. The emergent outbreak of COVID-19 prompted by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) keeps spreading globally. Its mortality and morbidity rate are rapidly increasing, and medication options are still limited. A patient’s immune response plays a pivotal role in the pathogenesis of COVID-19. Hyperinflammatory state may sparks significant imbalances in transporters and drug metabolizing enzymes, and subsequent alteration of drug pharmacokinetics that may result in unexpected therapeutic response. The present scenario has accounted the requirement for therapeutic opportunities to relive and overcome this pandemic. Despite the fact, the diminishing developments of COVID-19, there is no drug still approved to have significant effects with no side effect. Based on the evidence, many antiviral and anti-inflammatory drugs have been authorized by the Food and Drug Administration (FDA) to treat the COVID-19 patients even though not knowing the possible drug-drug interactions. Hydroxychloroquine is the first medicine chosen for the treatment of disease. Remdesivir, favipiravir, and molnupiravir are deemed the most hopeful antiviral agent; by improving health of infected patients. The dexamethasone saved the lives of seriously ill patients. Many randomized and controlled clinical trials are taking place to further corroborate these agent’s safety and efficacy in handling COVID-19. The current review summarizes the involvement of drug transporters and drug metabolizing enzymes for the existing drugs and gives the opinion on the potential drug-drug interactions in an inflammatory state. This may permit the individualization of these drugs thereby enhancing the safety and efficacy.
Preserving 40% forest cover is a valuable and well-supported conservation guideline:...
Víctor Arroyo-Rodríguez
Lenore Fahrig

Víctor Arroyo-Rodríguez

and 12 more

December 22, 2020
Banks-Leite et al. (2021) claim that our suggestion of preserving ≥40% forest cover lacks evidence and can be problematic. We find these claims unfounded, and discuss why conservation planning urgently requires valuable, well-supported, and feasible general guidelines like the 40% criterion. Using region-specific thresholds worldwide is unfeasible and potentially harmful.
Valvular Complications Following the Impella Device Implantation
Davorin Sef
Tito Kabir

Davorin Sef

and 3 more

December 22, 2020
Background: Despite clear clinical benefits, there is limited evidence regarding possible complications of the novel mechanical support device Impella. Aortic and mitral valve regurgitation or injury are rare but potential complications following implantation of the Impella device. Methods: To evaluate valvular complications after the Impella device implantation, we have performed a comprehensive search of literature on multiple sites on this topic. Results and Conclusion: Ten case reports and one observational retrospective study were identified, with a total number of 19 patients identified. This article aims to draw attention to potential periprocedural complications relating to the Impella, in particular iatrogenic aortic and mitral valve injuries. Moreover, we have summarized our recommendations emphasizing the need for careful management and meticulous follow-up of these patients to avoid such potentially devastating complications.
Inevitable Interactions Fostering Peace in the Context of Culture and Religion  
Akintayo Sunday Olayinka

Akintayo Sunday Olayinka

December 01, 2025
Inevitable Interactions: Fostering Peace in the Context of Culture and ReligionThe inevitability of interactions among the Yorùbá as a community of people regardless of their religious differences is the focus of this paper. Here, the author presents how the Yorùbá have displayed a substantial evidence of freedom of religion and understanding of their neighbours to manage conflict and sustain their peace. One of the ways in which religion has been useful to maintain good relationships among the Yorùbá is its focus on tolerance, patience, and other virtues that heads of families and community leaders teach their members. Their social interactions at home and within their community are inevitable, and these helped to keep the Yorùbá in harmony and to settle conflicts and disputes more often than would have thought of in other communities. Note: This paper is a part of the author's research findings and contains some of chapter seven of the dissertation with a few amendments to suit this journal article requirement. 
A Novel Bridging Strategy Using Central Extracorporeal Membrane Oxygenation in Post-M...
Stephanie Nguyen
Lucas Witer

Stephanie Nguyen

and 5 more

December 21, 2020
Ventricular septal defect (VSD) is a fatal mechanical complication of acute myocardial infarction (MI). The outcome of conventional surgery in post-MI VSD patients complicated by cardiogenic shock is extremely poor. We report two cases of a post-MI VSD stabilized with extracorporeal membrane oxygenation support followed by successful patch repair.
Cold plasma as a potential adjunctive therapy in COVID-19: report of three cases.    
Fahimeh Abdollahimajd
mreza pourani

Fahimeh Abdollahimajd

and 3 more

January 04, 2021
Cold plasma as a potential adjunctive therapy in COVID-19: report of three cases Fahimeh Abdollahimajd1,2, Mohammad Reza Pourani1*, Alireza Fatemi,3 Hamideh Moravvej1*1 Skin Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran;2 Clinical Research Development Unit, Shohada-e Tajrish Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran3 Men’s Health and Reproductive Health Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran*Corresponding author: Hamideh Moravvej, Skin Research Center, Shohada-e Tajrish Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Tel: +98- 21-22741507, Fax:+98-2122744392, Email: hamidehmoravej@sbmu.ac.ir* Co-corresponding author: Mohammad Reza Pourani, Skin Research Center, Shohada-e Tajrish Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Tel: +98- 21-22741507, Fax:+98-2122744392, Email: mreza.pourani92@gmail.comWord count: 595 Number of references: 5Items: 2 FiguresKeywords: Cold plasma, COVID-19, Coronavirus 2019, TreatmentRunning title: COVID-19 infection and cold plasma treatmentFunding: This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.Competing Interests: The authors declare no conflict of interest.
Targeting the autonomic nervous system during AF ablation: should we fight or take fl...
Tolga Aksu
Dhiraj Gupta

Tolga Aksu

and 1 more

December 21, 2020
Demonstration that the myocardial sleeves of the pulmonary veins (PVs) are the main triggering and maintaining foci for paroxysmal atrial fibrillation (AF) have stimulated studies investigating electrophysiological properties of PVs and the adjacent left atrial (LA) myocardium. It has been shown that PV myocytes have a shorter action potential duration and are more prone to effects of local autonomic nerve stimulation in terms of shortening of action potential duration, early after depolarization formation and triggered firing compared to left atrial myocytes (1). The intrinsic cardiac autonomic nervous system (ICANS) forms clusters of neurons called ganglionic plexi (GPs), and studies using histologic examination of heart sections have shown that these GPs are localized preferentially at certain epicardial sites adjacent to the left and right atria (2). The precise role of ICANS in AF continues to be an area of intense research (3), and matters are not helped by the uncertainty regarding the best way to identify and target ICANS peri-procedurally. As there can be significant variability of GP sites in individual patients, endocardial high-frequency stimulation (HFS) has been used to aid their localization in the electrophysiology laboratory (4).
A DIGITAL SOLUTION TO HELPING THE ENVIRONMENT
Maria Jones

Maria Jones

December 21, 2020
A document by Maria Jones. Click on the document to view its contents.
Accuracy of antepartum ultrasound in evaluating placental pathology using superb micr...
Natsumi Furuya
JUNICHI HASEGAWA

Natsumi Furuya

and 4 more

December 21, 2020
Objectives: To clarify whether microvascular ultrasound Doppler (SMI: superb microvascular imaging) can detect antenatal histological findings in pathologic placentas. Methods: In this prospective diagnostic observational study (STROBE), pregnant women who were admitted to our perinatal center for perinatal management were enrolled. Ultrasound examinations to identify placental pathologies using SMI were performed before delivery. After delivery, the placental tissue was clipped for microscopic examination, as the location of the placenta obtained ultrasound findings. The accuracy of antenatal ultrasound detection of placental pathologies was compared between women who were admitted due to fetal growth restriction (FGR), pre-eclampsia, and other indications. Results: The highest accuracy was observed with placental infarction in FGR (positive predictive value [PPV], 100%; sensitivity, 89%; area under the curve [AUC], 0.945), whereas PPV, sensitivity, and AUC in cases of preeclampsia were relatively low (AUC 0.540). Additionally, PPV, sensitivity, and AUC for avascular villi were 100%, 57%, and 0.785 in cases with FGR, 67%, 67%, and 0.780 in cases with preeclampsia, and 80%, 80%, and 0.920, respectively. The diagnostic accuracies predictive of congestion of stem villi and chorangiosis were insufficient (AUC<0.700). Conclusions: SMI can accurately detect placental pathologic findings, such as placental infarction and avascular villi. This modality may improve the perinatal management in cases of placental abnormalities.
First successful treatment of Legionella pneumonia in patient with hemoblastosis in K...
Yevgeny Merenkov
Jamilya Saparbay

Yevgeny Merenkov

and 1 more

December 21, 2020
A 55 years old woman with multiple myeloma was referred to us for autologous hematopoietic stem cell transplantation. The patient developed Legionella pneumonia while mobilization of hematopoietic stem cells.we report a case of successful treatment Legionella pneumonia in patient with multiple myeloma.
Feasibility of off-pump coronary artery grafting for patients with impaired left vent...
Rongrong Jiang
Yiqing Wang

Rongrong Jiang

and 6 more

December 21, 2020
Despite great advances in surgeries, the management of patients with impaired left ventricular ejection fraction is still challenging. Furthermore, evidences on outcomes of off-pump coronary artery bypass surgery (OPCAB) in this population are inconsistent. We conducted present study to compare the short and long-term outcomes in patients with different ejection fractions undertaken OPCAB.
Efficacy and safety of phytoestrogens in the treatment of postmenopausal depressive d...
Li Jieyun
Huijuan LI

Li Jieyun

and 7 more

December 21, 2020
Background:Depression is one of the most common and specific symptoms among postmenopausal women, leading to significant personal, family, and economic burdens. Some studies have shown that phytoestrogens can help relieve symptoms of depression. Objectives: This systematic review and meta-analysis aims to assess the efficacy and safety of phytoestrogens in treating depression among postmenopausal women. Methods: A comprehensive search for relevant studies published until November 25, 2020, was conducted in PubMed, the Cochrane Library, Chinese Biomedical Literature Database, Web of Science, and EMBASE. Statistical analyses were performed with Stata12.0, Comprehensive Meta-Analysis 3.0, and Review Manager 5.4. Results: 2,183 studies were identified and 10 studies were included, involving 1,248 participants. The quality of the four studies was assessed as high risk, six studies were assessed as unclear. The analyses conducted according random effects model indicated a positive effect on depressive symptoms for postmenopausal women compared to the placebo (SMD=-0.45; 95% [CI]= -0.60 to -0.29; Q=40.42, df=18, P=0.002; I2=55.5%). The high dose phytoestrogens (dose>100mg/day) have better effectiveness (SMD =-0.48; 95%[CI]= -0.76 to -0.20; I2=52.8%, P<0.05) than low dose (25mg/day≤dose≤100mg/day) (SMD=-0.45; 95%[CI]=-0.68 to-0.23; I2=66.7%; P>0.05) and ultralow dose (00.05). Isoflavones had better effectiveness (SMD=-0.52; 95% [CI]= -0.75 to 0.30; I2=65.8%, P<0.05) than lignans of phytoestrogens (SMD= -0.23; 95% [CI]= -0.05 to 0.01; I2=0%, P>0.05). The effectiveness varies in regions. The adverse reactions frequently reported were gastrointestinal symptoms and cold or upper respiratory tract infection. Conclusions: Phytoestrogen can relieve depression symptoms among postmenopausal women. High-dose isoflavones is the most effective. Although mild adverse reactions have been reported, phytoestrogen could be considered as a complementary treatment for postmenopausal depression.
Properly quantifiying outcomes of AF Ablation - Is a 30-second recurrence an evidence...
Carolina Schwab
Mathias Forkmann

Carolina Schwab

and 6 more

December 21, 2020
Background: Although atrial fibrillation (AF) ablation is a well-established treatment, the classical definition of recurrence and therefore success is not evidence-based. Additionally, the frequency of asymptomatic patients whose episodes are not noticed on routine electrocardiogram (ECG) may compromise the actual success rate. Objectives: This study aimed to assess the characteristics of AF burden after atrial fibrillation ablation and its influence on patients’ symptoms in the setting of continuous remote monitoring. It also sought to investigate a relevant cutoff as a new definition for recurrence. Methods: 141 consecutive patients with symptomatic paroxysmal or persistent AF underwent an AF ablation and then were followed by continuous rhythm monitoring. The AF/atrial tachycardia (AT) burden, duration of episodes and symptoms where registered systematically. Results: After the blanking period, freedom from AF/AT >30sec. was 59%. Considering an AF-Burden <1%, the success rate was 80%. The incidence of asymptomatic episodes in the group of patients with conventional recurrence was 24% (14/58) and 20% (8/41) when a cut-off of 1% of AF/AT burden was considered. Asymptomatic patients had an AF burden of 1.87 ± 4.6% during follow-up, compared to 4.0 ± 7.2% in symptomatic patients (p=0.02). There was no statistical difference between AF type (paroxysmal vs. persistent) and the frequency of asymptomatic episodes. Conclusions: Patients with asymptomatic AF Episodes represent a significant proportion after AF ablation. These patients could be easily overlooked without a proper monitoring technique. A burden cutoff of 1% and freedom from symptom should be considered as an ablation endpoint.
MrIML: Multi-response interpretable machine learning to map genomic landscapes
Nichola Fountain-Jones
Christopher Kozakiewicz

Nichola Fountain-Jones

and 12 more

December 21, 2020
We introduce a new R package ‘MrIML’ (Multi-response Interpretable Machine Learning). MrIML provides a powerful and interpretable framework that enables users to harness recent advances in machine learning to map multi-locus genomic relationships, to identify loci of interest for future landscape genetics studies and to gain new insights into adaptation across environmental gradients. Relationships between genetic change and environment are often non-linear, interactive and autocorrelated. Our package helps capture this complexity and offers functions that construct, fit and conduct inference on a wide range of highly flexible models that are routinely used for single-locus landscape genetics studies but are rarely extended to estimate response functions for multiple loci. To demonstrate the package’s broad functionality, we test its ability to recover landscape relationships from simulated genomic data. We also apply the package to two empirical case studies. In the first we estimate variation in the population-level genetic composition of North American balsam poplar (Populus balsamifera, Salicaceae) and in the second we recover individual-level landscapes while estimating host drivers of feline immunodeficiency virus genetic spread in bobcats (Lynx rufus). The ability to model thousands of loci collectively and compare models from linear regression to extreme gradient boosting, within the same analytical framework, has the potential to be transformative. The MrIML framework is also extendable and not limited to mapping genetic change, for example, it can be used to quantify the environmental driver sof microbiomes and coinfection dynamics.
Prosthetic Valve in Chronic Dialysis: a Systematic Review and Meta-Analysis
Emilie Belley-Côté
Saurabh Gupta

Emilie Belley-Côté

and 15 more

December 21, 2020
Abstract Background: Many patients with end stage kidney disease (ESKD) have valvular heart disease requiring surgery. The optimal prosthetic valve is not established in this population. We performed a systematic review and meta-analysis assessing outcomes of patients with dialysis-dependent ESKD who received mechanical or bioprosthetic valves. Methods: We searched Cochrane CENTRAL, MEDLINE, and EMBASE from inception to January 2020. We performed screening, full-text assessment, risk of bias, and data-collection independently and in duplicate. We evaluated risk of bias using the ROBINS-I tool and certainty in evidence with GRADE. Data were pooled using a random-effects model. Results: We identified 28 observational studies (n=9857; 6680 mechanical and 3717 bioprosthetic) with a median follow-up of 3.45 years. Due to confounding, 22 studies were at “high” and one at “critical” risk of bias. Certainty in evidence for all outcomes, except for bleeding, was very-low. Mechanical valves were associated with reduced mortality at 30 days (RR0.79, 95%CI[0.65,0.97], I2=0, absolute effect 27 fewer deaths per 1000) and at ≥ 6 years (mean 9.7 years, RR0.83, 95%CI[0.72,0.96], I2=79%, absolute effect 145 fewer deaths per 1000), but increased bleeding (RR2.46, 95%CI[1.35,4.48], I2=69% absolute effect 113 more events per 1000) and stroke (RR1.53, 95%CI[1.13,2.07], I2=0%, absolute effect 21 more events per 1000). Conclusion: Mechanical valves are associated with reduced mortality, but increased risks of bleeding and stroke. Given very-low certainty for mortality and stroke, patients and clinicians may choose a prosthetic valve based on factors such as bleeding risk and valve longevity.
Utilizzo del modello Calpuff per la valutazione della qualità dell'aria     
Annamaira Shara Ferruzzi
Davide Rizzo

Annamaira Shara Ferruzzi

and 1 more

January 04, 2021
La legislazione europea e il suo recepimento nella normativa nazionale incoraggiano lo sviluppo e l'uso di sistemi modellistici di qualità dell'aria che sono considerati di primaria importanza nelle valutazioni preliminari di qualità e utili per completare il contenuto informativo delle misure dirette. Il funzionamento dei modelli di dispersione consiste nel simulare gli effetti di una o più sorgenti di emissione in termini di concentrazione degli inquinanti emessi in corrispondenza di fissati recettori. Il presente articolo analizza il sistema modellistico Calpuff applicato ad un caso studio sull’impianto di processo di un'azienda chimica di Ferrara per valutarne il comportamento.
COVID-19 Associated Bronchiectasis and its Impact on Prognosis.
Aasir  Suliman
Bassel Bitar

Aasir Suliman

and 5 more

December 21, 2020
COVID-19 associated bronchiectasis is an atypical finding and it's not commonly described sequel of the disease. Here, we present a previously healthy middle-aged man who developed progressive bronchiectasis evident on serial chest CT scans with superimposed bacterial infection following COVID-19 pneumonia.
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