Rare Complications of Infective Endocarditis: Complete Heart Block and Extension to the Aorto-Mitral Curtain

The concept of community stability encompasses two independent aspects, including both temporal and spatial dimensions. While considerable progress has been made in understanding temporal stability at the community level (referred to as α temporal stability), along with its interplay with temporal stability at smaller scales and the broader scales of β and γ temporal stability, there remains a notable gap in our understanding of spatial stability at the community level (referred to as α spatial stability) and its relationships with spatial stability and asynchrony at smaller species scales. Drawing on five years of data from a nitrogen addition experiment conducted in an alpine meadow on the Tibetan Plateau, we examine the impacts of nitrogen addition on both temporal and spatial stabilities of community biomass, considering species richness, asynchrony and stability of all species, dominant, and other non-dominant species. Our findings demonstrate that nitrogen addition impacts the temporal and spatial stabilities of community biomass in alpine meadow mainly through its influence on the temporal and spatial asynchrony of dominant species and on the temporal and spatial asynchrony at the overall species level. Furthermore, we indicate that in the high species richness alpine meadow on the Tibetan Plateau, temporal stability of community biomass increases rather than decreases in response to nitrogen addition as species richness declines, while spatial stability of community biomass remains unchanged. Our study offers a comprehensive perspective for theoreticians, empiricists, and policymakers, highlighting the importance of integrating the multidimensional nature of ecological stability into research, policy development, and decision-making processes in the face of global change.

Climate change mitigation strategies that are based on nature include artificial forests, which are being utilized in greater numbers globally to restore environmental degradation and devastation caused by human activities. However, a substantial expansion in the amount of plantation forests does not guarantee the successful restoration of ecological function. In this study, we investigated the plantation forest restoration success by conducting field monitoring and analyzing the function of monoculture plantations and natural secondary forests. Our research revealed that although certain forests have successfully restored their ecological function as anticipated, there is a disparity between the plantation forests and the natural forests. The present restoration of plantation forests is facing a bottleneck challenge, where previously built forests are inefficient and are facing degradation without a successor to take up the “next baton”. Upon optimizing the configuration of stand factors and terrain factors, we discovered that the ecological function of plantation forests can be substantially enhanced. We suggest that the close-to-nature management is urgently needed to promote the transformation of monoculture plantations into near-natural forests.

Investigating the phenology of rubber trees (Hevea brasiliensis), a widely cultivated crop in tropical regions exhibiting distinct phenological patterns, is crucial for optimizing plantation management, enhancing production efficiency, and understanding the implications of global climatic change on tropical vegetation dynamics. The purpose of this study is to explores the spatiotemporal variation characteristics and driving factors of rubber phenology over the past two decades on Hainan Island, China’s second-largest rubber plantation base. We applied by integrating multi-source remote sensing imagery processed through the Google Earth Engine (GEE) cloud platform with various analytical methods including the seasonal amplitude method, Savitzky-Golay (S-G) filtering technique, partial correlation analysis, Sen’s slope, and Mann-Kendal test. The results showed that rubber phenology exhibited significant interannual trends and spatial heterogeneity. Specifically, the start of the growing season (SOS) mainly occurred from early to late March (day of year, DOY 60-81), with a trend of advancing by 1.1 days per decade. The end of the growing season (EOS) mostly occurred from late January to early February (DOY 392-406 counted from the previous year), delaying by 3.7 days per decade. The length of the growing season (LOS) lasted 10 to 11 months. Precipitation and topography significantly influenced rubber phenology, with SOS advancing as slope increased and elevation decreased, and increased precipitation accelerating both SOS and EOS at a rate of 1.00 day per 100 mm. Pre-seasonal climatic factors, particularly temperature in February and precipitation in February and March for SOS, and precipitation in January and temperature in February for EOS, were closely related to phenological changes. These findings elucidate the spatiotemporal patterns and underlying drivers of rubber tree phenological changes, offering valuable insights for optimizing rubber plantation management and informing tropical vegetation conservation efforts. Future research should prioritize investigating the impact of global climate change on rubber phenology and developing adaptive strategies to ensure sustainable development in tropical regions.

Space use by animals is affected by multiple factors; previous researchers have examined the effects of influences such as sex, body condition, and population density on home range area. However, evaluating the simultaneous influences of multiple factors on animal space use has been relatively intractable due to sample size limitations. We capitalize on National Ecological Observatory Network (NEON) data to ask what factors determine space use by deer mice (genus Peromyscus). We examined data from 10 years of repeated captures of individually identified mice at 36 sites across North America. We confirmed previous findings that males have larger home ranges than females and that home range area decreases with increasing animal density. In addition, our large sample size (N = 2420 individuals) enabled us to examine the interacting influences of these and other intrinsic and extrinsic factors using a robust statistical framework. We found that the relationship between body condition and home range area differs between male and female mice, and that habitat type, latitude, and animal density all interact to influence space use. We conclude that high throughput ecological data can be used to examine important behavioral questions that have long eluded investigators.

Influenza virus infection may lead to fatal complications including multi-organ failure and sepsis. The influenza virus was detected in various extra-pulmonary organs in autopsy studies during the 2009 pandemic. However, limited research has been conducted on the presence of viral particle or viral components in the peripheral blood. We established a mouse model for severe H1N1 influenza. The bile and blood samples were collected over time and inoculated into embryonated chicken eggs. We detected live influenza virus with plaque assay test and negative stain with electronic microscopy in bile and blood samples in early infection. Immunofluorescence showed influenza viral components in the liver tissue. No live virus was isolated in the bile in mice intragastrically administered with influenza virus, indicating that the virus was spread from the blood stream. Targeted metabolomics analysis of bile acid and liver tissues showed that a secondary bile acid (3-dehydrocholic acid) was decreased after influenza H1N1 infection. Genes related with fatty acid metabolism and bile secretion pathways were down-regulated in liver after influenza virus infection. Our study indicated that influenza virus viremia is present in severe influenza, and that the liver is a target organ for influenza viral sepsis.

Background: The current understanding of the immune landscape among the population following the widespread infection of SARS-CoV-2 in China by the end of 2022 is limited. The objective of this study was to evaluate the neutralizing activity of SARS-CoV-2 mutants (particularly JN.1) within the Chinese background and speculate on the future trajectory of the epidemic in China. Methods: Serum samples were collected from 340 people in Guangdong province at different time points between January 2023 and January 2024, and from 99 people who received three doses of inactivated virus vaccine before the outbreak. The pseudovirus neutralization assay was employed to investigate the neutralizing activities exhibited by these samples against three SARS-CoV-2 mutants. Results: Firstly, the low level of neutralizing antibody against BA.5 subbranches before the pandemic may be the cause of the national pandemic at the end of 2022. And the large-scale breakthrough infection increased the population’s immune resistance to BA.5, XBB.1.5/1.9.1, JN.1, thereby inhibiting the new wave of large-scale infection caused by XBB subbranches in China. Secondly, JN.1 had enhanced immune evasion capabilities. However, the levels of neutralizing antibodies against JN.1 in Chinese residents are comparable to those observed against XBB 1.5 among confirmed cases at the end of 2022. Conclusions: JN.1 will replace XBB subbranches as the predominant epidemic mutant in subsequent transmissions within China. However, it will be unlikely to cause a large-scale spread comparable to that witnessed at the end of 2022, with transmission patterns potentially resembling those observed for XBB post-pandemic.

Aim: High glucose (HG) impairs the viability and function of osteoblast, thus causing bone metabolism disorder and osteoporosis. Curcumin is a polyphenolic phytochemical derived from the curcuma longa, and it exhibits anti-inflammatory and antioxidant properties, which associated with cell metabolism. The objective of this study is to investigate the effects and mechanisms of curcumin on HG mediated osteoblast dysfunction. Methods: In the present study, osteoblastic cell was treated with or without curcumin, Nrf2 siRNA interference and JNK inhibitor SP600125. Cell proliferation and apoptosis were assessed by CCK-8 assay, cleaved casepase-3 expression and Annexin V-FITC/PI assay, respectively. Osteoblasts differentiation was detected by ALP activity, osteogenic-specific gene and RUNX2 expression. Immunoblot analysis was used to detect protein expression. Results: The results showed that curcumin enhanced the osteoblast differentiation which are reduced by HG condition via Nrf2 activation and ROS/JNK inhibition. Knock-down of Nrf2 partially blocked curcumin-induced Nrf2 activation and ROS/JNK inhibition, as well as the attenuation of curcumin-induced osteoblast differentiation and survival in HG condition. JNK inhibition impair the positive effect of curcumin in response to HG, which presented a similar result to Nrf2 knock-down. Conclusion: ROS-related JNK phosphorylation might serve as the mechanism for HG-induced apoptosis and Nrf2 activation mediated by curcumin exerted a protective role against osteoblast apoptosis.

It has been reported that long non-coding RNA (lncRNA) is closely related to tumor development and chemotherapy resistance. Cancer susceptibility candidate 15 (CASC15) is a cancer-related lncRNA located on chromosome 6p22.3 which is abnormally expressed in different malignant tumors. CASC15 is involved in a variety of biological processes, such as cell growth, migration and invasion. Various studies have shown that CASC15 is expected to become a novel biomarker and therapeutic target for cancer. In this review, we summarize the regulatory function and mechanism of CASC15 in malignant tumors, as well as its potential value in the diagnosis and treatment of tumors.

Retinopathy of Prematurity (ROP) mainly occurs in premature infants with low birth weight, and it is the leading cause of childhood blindness. Early and accurate ROP diagnosis is imperative for appropriate treatment. However, less research concentrates on early-stage ROP diagnosis based on limited-labeled images in an imbalanced dataset. To address the dilemma, this study proposed a novel self-supervised network, MOCO-MIM, for early ROP grading. The proposed classification network was evaluated on a total of 553 labeled fundus images from 89 preterm infants. The trained network achieved a test accuracy of 98.29% and an AUC score of 97.6% for three stages of grading. The adopted method is verified that the proposed method can be detected early stages of ROP more efficiently and grade the severity more accurately based on limited-labeled fundus images, which is superior to the existing state-of-the-art methods.

A document by Jaime Y. Suárez-Ibarra. Click on the document to view its contents.

Background: Cardiac Amyloidosis (CA), a major type of systemic amyloidosis, significantly impairs the function of heart and other vital organs. This bibliometric analysis aims to evaluate the evolution and scope of CA research, with a focus on echocardiography, up to November 2023. Methods: Articles related to CA and echocardiography were sourced from the Web of Science Core Collection (WOSCC). Data analysis was carried out by R package ‘Bibliometrix’ for key findings, keyword tracking, and mapping global collaborations analysis. VOSviewer was applied for co-authorship and keyword trend analysis, while CiteSpace was used to performco-cited references analysis. Results: The study included 477 articles, with the USA, Italy, and France as the predominant contributing countries. Research output showed an increasing annual publication trend, particularly from 2014 onwards. Notable findings include the integration of artificial intelligence in echocardiography and the expansion of multimodal imaging methods. Common keywords included ‘cardiac amyloidosis’, ‘echocardiography’, ‘meachine learning’, ‘AI’ Conclusions: This study presents a comprehensive bibliometric analysis of CA research, emphasizing the growing role of echocardiography enhanced by AI and advanced imaging techniques. The findings provide valuable insights for ongoing research and clinical practice in cardio-oncology.

A document by Syed Haider . Click on the document to view its contents.

PROGRESSIVE NECK DEFORMATION AFTER INTRAMEDULAR CERVICAL TUMOR REMOVAL BY LAMINOPLASTY APPROACHDmytro Ishchenko, MD11 Department of Neurosurgery, National Specialized Children’s Hospital Ohmatdyt, Kyiv, UkraineCorresponding Author: Dmytro Ishchenko, National Specialized Children’s Hospital Ohmatdyt ishchenko.dmitriy@gmail.comKeywords: neck, deformity, kyphosis, laminoplasty, high-grade glioma, neck fixation

The recognition of constipation as a possible non-Immunoglobulin E (IgE) mediated allergic condition is challenging because functional constipation (unrelated to food allergies) is a common health problem with a reported worldwide prevalence rate of up to 32.2% in children. However, many studies in children report challenge proven cow’s milk allergy and constipation as a primary symptom, have found that between 28-78% of children improve on a cow’s milk elimination diet. Due to the paucity of data and a focus on IgE mediated allergy, not all food allergy guidelines list constipation as a symptom of food allergy. Yet, it is included in all cow’s milk allergy guidelines available in English language. The Exploring Non- IgE Mediated Allergy(ENIGMA) Task Force (TF) of the European Academy for Allergy and Clinical Immunology (EAACI) considers in this paper constipation in the context of failure of standard treatment and discuss the role of food allergens as culprit in constipation in children. This position paper has used the Delphi approach in reaching consensus on both diagnosis and management, as currently published data is insufficient to support a systematic review.

Introduction: We report a case of emphysematous pyelonephritis (EPN) that was diagnosed based on acute changes detected via imaging. Case presentation: A 49-year-old woman was brought to the hospital with impaired consciousness and a severe infection. The simple computed tomography (CT) scan could not detect the specific focus of the infection

This paper mainly solves the problem of synchronous control of the master-slave manipulator in an underwater teleoperation system with hardware performance limitations, model uncertainties, and unknown external disturbances. Firstly, in order to meet the limitations of hardware conditions such as the motor speed in the hardware platform, and a prescribed performance function(PPF) is proposed to constrain the speed error, effectively improving the transient performance of the system. Secondly, a prescribed-performance-based adaptive nonsingular integral sliding mode controller(ANISMC) is proposed. Compared with the existing integral sliding mode controllers, the controller in this paper has a faster convergence speed. Then, the Lyapunov method is used to prove that the transformation error and the sliding surface can converge to zero within a fixed time, solving the problem that the integral sign is difficult to cancel when the integral sliding mode controller is used to prove fixed-time stability with the Lyapunov method, and there is no need to know the upper limit of uncertainties and disturbances in advance. Finally, the simulation comparison experiment shows the superiority of the proposed PPF-based ANISMC

Background: Peanut allergy prevalence is reported at 3% and consumes a significant volume of oral food challenges (OFC) in the diagnosis of food allergy. Compared to skin prick test (SPT) or sIgE to whole peanut, sIgE to peanut component ara h 2 has greater diagnostic accuracy. Two-step algorithms involving both SPT and ara h 2 sIgE demonstrate increased accuracy in diagnosis in modelled studies, resulting in fewer OFCs. We aimed to determine whether there is a similar reduction in OFCs in a clinical uptake of this two-step diagnostic algorithm compared to using peanut SPT alone and perform a cost comparison between these two approaches. Methods: In 2015, The Royal Children’s Hospital, Australia (RCH) implemented a clinical guideline using peanut SPT followed by sIgE to ara h 2 if the SPT was between 3 and 8mm and clinician is considering an OFC for a patient with suspected peanut allergy. We performed an audit of patients presenting to RCH allergy outpatient clinics for assessment of peanut allergy to determine the outcomes and potential reduction in need for OFC using the two-step algorithm. We used modelled data of the same patient cohort to estimate the number of OFCs that were avoided as a result of a high (≥1.0kUA/L) ara h 2 sIgE. A cost comparison was performed comparing the two-step algorithm to using peanut SPT alone. Costs were constructed based on unit prices from hospital admissions, medicare data and individual data on allergic reaction types, applying a health system perspective. Results: 8826 patients presented to RCH for peanut allergy assessment between May 2016 and August 2020. Of these, 9.2% proceeded to an OFC, with positive results seen in 20.1% and anaphylaxis in 1.1%. 42.0% (364/867) of patients with a SPT between 3-8mm followed the diagnostic algorithm appropriately. Of those who followed the diagnostic algorithm, there was a reduction of 27.8% in OFCs as a result of an elevated (>1.0kUA/L) ara h 2 result. The diagnostic algorithm pathway resulted in a 32.05% cost reduction compared to the modelled SPT-only pathway. Sensitivity analysis demonstrated that the number of patients proceeding to OFC gives greatest impact to the overall cost of diagnosis, rather than the cost of the OFC or ara h 2 itself. Conclusions: A combined algorithm incorporating peanut SPT followed by sIgE to ara h 2 resulted in a reduction in patients requiring oral food challenges. There is also a cost saving for this approach. There is a large proportion of patients that did not follow the algorithm, and this may relate to clinical history.

In aquatic environments, alkali-saline stress represents a substantial non-biological threat, severely affecting the normal growth and development of fish. To cope with these pressures, fish may employ mechanisms of genetic and epigenetic variation to adapt to extreme environments. However, it remains unclear how these mechanisms interact in promoting population persistence under environmental heterogeneity. To investigate the potential genetic and epigenetic mechanisms underlying adaptation to extreme alkali-saline environments, we selected Amur ide (Leuciscus waleckii), a fish species inhabiting highly saline-alkali lakes in Inner Mongolia, China, and studied the roles of its genome and DNA methylation patterns in the context of extreme environmental conditions.  Genomically, we assembled the Amur ide genome and compared it with genomes of individuals from non-alkaline populations, revealing fundamental differences in genes associated with ion transport, osmoregulation, and immune function. Epigenetically, using DNA methylation sequencing, we designed experiments involving indoor alkaline stress and freshwater recovery, targeting genes involved in immune function, arachidonic acid metabolism, and steroid metabolism pathways. However, adaptive regulatory mechanisms driven by genetic and epigenetic variations appear largely distinct, suggesting autonomous roles for epigenetic variations. This complements and independently contributes to the adaptation of Amur ide to extreme salt-alkali environments. In conclusion, our study provides novel insights into the molecular mechanisms of phenotypic plasticity, crucial for predicting species' adaptive potential in rapidly changing aquatic environments.

During mammalian terrestrial locomotion, body flexibility facilitated by the vertebral column is correlated with observed modes of locomotion, known as gait (e.g., sprawl, trot, hop, bound, gallop). In small-to-medium sized mammals (average weight up to 5 kg), the relationship between locomotive mode and vertebral morphology is largely unexplored. Here we studied the vertebral column from 46 small-to-medium sized mammals. Nine vertebrae across cervical, thoracic, and lumbar region were chosen to represent the whole vertebral column. Vertebra shape was analysed using three-dimensional geometric morphometrics with phylogenetic comparative method. We also applied the multi-block method, which can consider all vertebrae as a single structure for analysis. We calculated morphological disparity, phylogenetic signal, and evaluated the effects of allometry and gait on vertebral shape. We also investigated pattern of integration in the column. We found the cervical vertebrae show the highest degree of morphological disparity, and the first thoracic vertebra shows the highest phylogenetic signal. A significant effect of gait type on vertebrae shape was found, with the lumbar vertebrae having the strongest correlation; but this effect was not significant after taking phylogeny into account. On the other hand, allometry has a significant effect on all vertebrae regardless of the contribution from phylogeny. The regions showed differing degrees of integration, with cervical vertebrae most strongly correlated. With these results, we have revealed novel information that cannot be captured from study of a single vertebra alone: although the lumbar vertebrae are the most correlated with gait, the cervical vertebrae are more morphologically diverse and more drive the diversity among species when considering whole column shape.

：To achieve a stable addition of foaming agent under high flow rates, an independently designed Venturi structure with self-suction of liquid and foaming agent was numerically simulated. We simulated the effects of different suction structure diameters, contraction angles, throat length and position on the suction ratio, compared and analyzed the data, and determined the optimal suction structure parameters. The suction ratio stabilizes and then decreases as the outlet pressure increases. At an outlet pressure of 0.48 MPa, the suction ratio remains stable at 1.14%. However, as the outlet pressure increases, the ability of the Venturi structure to add foaming agent to the self-suction liquid decreases under high flow rates, causing the suction ratio to rapidly decrease to a minimum value of 0.55 MPa. The suction ratio shows a tendency to first stabilize and then decrease as the outlet pressure increases. When the outlet pressure reaches 0.48 MPa, the suction ratio can remain stable at 1.14%; as the outlet pressure increases, the addition ability of the Venturi structure with foaming agent added to the self-suction liquid under high flow rate decreases, and the suction ratio rapidly decreases to a minimum value of 0.55 MPa. We have conducted a detailed analysis of the process and flow field of liquid suction. As the pressure ratio increases, the high-speed area of the throat gradually shrinks, and the flow field in the diffusion section fluctuates. When the outlet pressure is 0.6 MPa and the velocity field shifts towards the upper part of the diffusion section, the cavitation area will gradually disappear and lose its liquid suction ability.

A document by AbdulGuddoos S. A. Gaid. Click on the document to view its contents.

TITLE: A rare case of SMARCB1 (INI-1)-deficient sinonasal carcinoma: A case report from Nepal

There is an increasing interest in environmental DNA (eDNA) as a method to survey marine biota, enhancing traditional survey methods, and a need to ground truth eDNA-based interpretations with visual surveys to understand biases in both the eDNA and visual datasets. We designed and tested a rapidly-deployable, robust method pairing water sampling for eDNA collection and stereo-video imagery, comparing inferred fish assemblages with interspersed baited remote underwater video (stereo-BRUV) samples. The platform demonstration was conducted in proximity to a submerged ancient coastline feature in the no-take National Park Zone of the Ningaloo Marine Park, Western Australia. The system is capable of rapidly collecting simultaneous 270 degree stereo-video imagery, oceanographic measurements and multiple water samples across a range of habitat and depths (up to 600m). Combining simultaneous visual survey data with eDNA species estimates increased the total diversity of the fish assemblage by ca. 6.5% over eDNA estimates alone, whilst analysis of the assemblage composition sampled by each method revealed significant differences. The platform demonstration highlights the biases of each sampling method and their complementarity to one another. We suggest that these biases will be better understood by advancements that allow eDNA metabarcoding to discriminate the abundance and life-stage of marine biota. Furthermore, investigation of the relationship between eDNA metabarcoding data and concomitant imagery-derived length, age and habitat data is needed.