1,655,322 results match your criteria: "a Department of Biology; University of Sao Paulo State ; Sao Paulo[Affiliation]"

The COVID-19 pandemic has underscored societies' need for education and preparedness in addressing global environmental and health crises. Raising public awareness of the interdependence of human, animal, and environmental health is essential to engaging the public in environmental conservation and disease prevention. The One Health approach offers a holistic and multidisciplinary view for tackling challenges related to environmental and health issues by emphasizing the interplay of these three interconnected health dimensions.

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Cdc25C undergoes a sudden and substantial gel mobility shift at M-phase onset, correlating with abrupt activation of both Cdc25C and Cdk1 activities. A positive feedback loop between Cdk1 and Cdc25C has been used to explain this hallmark phenomenon. Here, we demonstrate that the M-phase supershift and robust activation of Cdc25C are due to the site-comprehensive phosphorylation of its long intrinsically disordered regulatory domain without requiring Cdk1 or other major mitotic kinase activities.

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Editorial: Novel pharmacological targets and strategies to treat neglected global diseases (NGDs): an LMIC perspective.

Front Pharmacol

January 2025

Computational Biology and Chemistry Research Group, Vicerrectorado de Investigación, Universidad Católica de Santa María, Arequipa, Peru.

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Background: Berberine (BBR) is widely used to treat gastrointestinal diseases. However, the pharmacological mechanism of action of BBR in anti-chronic atrophic gastritis (CAG) remains unclear. This study aimed to investigate the mechanism of action of BBR in CAG by integration of molecular biology and multi-omics studies strategy.

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Interest in metal nanoparticles synthesised using green methods is growing steadily. Metal nanoparticles can be synthesised inexpensively and effortlessly using extracts derived from different plants and their diverse components. Gold nanoparticles (Au NPs) were rapidly synthesised from Broccoli ( L.

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Purpose: To investigate the impact of Intensity-Modulated Radiation Therapy (IMRT) and Volumetric Modulated Arc Therapy (VMAT) on hippocampal radiation dosage and psychological status in patients newly diagnosed with nasopharyngeal carcinoma (NPC).

Patients And Methods: A retrospective analysis was conducted on 269 NPC patients who received initial treatment between January 2013 and April 2022. Patients were categorized into the IMRT group and the VMAT group based on the radiotherapy technique employed.

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We examined global records of accessible natural history voucher collections (with publicly available data and reliable locality data) for terrestrial and freshwater vascular plants, fungi, freshwater fishes, birds, mammals, and herpetofauna (amphibians and reptiles) and highlight areas of the world that would be considered undersampled and sometimes called 'unexplored' (., have relatively low, or no evidence of, past sampling efforts) under typical Western-scientific descriptions. We also question what 'unexplored' may mean in these contexts and explain how replacing the term in favor of more nuanced phrasing (.

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The Species Group contains eleven species of terraranan frogs distributed from eastern Honduras to eastern Panama. All species have remarkable color pattern polymorphisms, which may contribute to potential taxonomic problems. We performed exhaustive sampling throughout the geographic distribution of the group to evaluate the phylogenetic relationships and biogeographic history of all named species based on two mitochondrial markers and nuclear ddRAD loci.

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Giant viruses (GVs; ) impact the biology and ecology of a wide range of eukaryotic hosts, with implications for global biogeochemical cycles. Here, we investigated GV niche separation in highly stratified Lake A at the northern coast of Ellesmere Island, Nunavut, Canada. This lake is composed of a layer of ice-covered freshwater that overlies saltwater derived from the ancient Arctic Ocean, and it therefore provides a broad gradient of environmental conditions and ecological habitats, each with a distinct protist community and rich assemblages of associated GVs.

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Background: People with diabetes are at increased risk of hospitalisation, morbidity, and mortality following SARS-CoV-2 infection. Long-term outcomes for people with diabetes previously hospitalised with COVID-19 are, however, unknown. This study aimed to determine the longer-term physical and mental health effects of COVID-19 in people with and without diabetes.

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A time for sex: circadian regulation of mammalian sexual and reproductive function.

Front Neurosci

January 2025

Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States.

The circadian clock regulates physiological and biochemical processes in nearly every species. Sexual and reproductive behaviors are two processes controlled by the circadian timing system. Evidence supporting the importance of proper clock function on fertility comes from several lines of work demonstrating that misalignment of biological rhythms or disrupted function of the body's master clock, such as occurs from repeated shift work or chronic jet lag, negatively impacts reproduction by interfering with both male and female fertility.

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We describe an agent-based model purposed for social learning, which was developed by stakeholders, with the technical assistance of professional modelers, to facilitate stakeholder involvement in modeling issues related to the development of an adaptive environmental management plan for the Texas Gulf Coast (USA) estuaries. Stakeholders developed the model during six workshops that spanned a three-year period, and used the model to simulate the population dynamics (recruitment, growth, movement, and mortality) of blue crabs () in the Aransas and Copano Bays in response to various freshwater inflow and harvest scenarios. Results of scenarios representing normal, low, and high harvest levels indicated little effect on blue crab abundances, but harvests increased ≈75 % when harvest level was doubled and decreased ≈50 % harvest level was halved.

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This study investigates the mechanical properties as well as and cyto- and biocompatibility of collagen membranes cross-linked with glutaraldehyde (GA), proanthocyanidins (PC), hexamethylendiisocyanate (HMDI) and 1-Ethyl-3-(3-dimethylaminopropyl) carbodiimide/N-hydroxysuccinimide (EC/NHS). A non-crosslinked membrane was used as reference control (RF). The initial cytotoxic analyses revealed that the PC, EC, and HMDI crosslinked membranes were cytocompatible, while the GA crosslinked membrane was cytotoxic and thus selected as positive control in the further study.

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Gastro-oesophageal reflux-related chronic cough: can new tools improve patient assessment?

ERJ Open Res

January 2025

School of Biological Sciences, Faculty of Biology, Medicine and Health Sciences, University of Manchester, Manchester, UK.

https://bit.ly/41woxTD.

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The generation of induced pluripotent stem cells (iPSCs) from differentiated somatic cells by Yamanaka factors, including pioneer transcription factors (TFs), has greatly reshaped our traditional understanding of cell plasticity and demonstrated the remarkable potential of pioneer TFs. In addition to iPSC reprogramming, pioneer TFs are pivotal in direct reprogramming or transdifferentiation where somatic cells are converted into different cell types without passing through a pluripotent state. Pioneer TFs initiate a reprogramming process through chromatin opening, thereby establishing competence for new gene regulatory programs.

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Petroleum ether extract of induces senescence and inhibits invasion in breast cancer MDA-MB-231 cells.

3 Biotech

February 2025

Department of Molecular and Environmental Biotechnology, Faculty of Biology and Biotechnology, VNUHCM-University of Science, 227 Nguyen Van Cu, Ho Chi Minh City, 700000 Vietnam.

Unlabelled: Kunth H.B et Kunth is an herbal plant employed customarily for the treatment of numerous maladies, notably cancers. Here in this research, we studied the effects of () petroleum ether extract (EM-PE) on the highly aggressive breast cancer cell line MDA-MB-231.

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Intranasal delivery of metformin using metal-organic framework (MOF)-74-Mg nanocarriers.

Adv Compos Hybrid Mater

January 2025

J. Mike Walker '66 Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843 USA.

Dosage tolerance is one of the translational challenges of using metformin (Met) in brain therapeutics. This paper presents metal-organic framework (MOF)-74-Mg nanocarriers (NCs) for intranasal (IN) delivery of brain-specific agents with a prolonged release time. We confirmed their excellent biocompatibility (5 mg/mL) and intrinsic fluorescence properties (370/500 nm excitation/emission peak) in Neuro-2A cells.

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This study investigates the association between self-reported birth weight (BW) and the frequency of cataract and pseudophakia in a large population-based cohort in Germany, as part of the Gutenberg Health Study (GHS). Slit lamp examination and Scheimpflug imaging of 8205 participants, aged 35 to 74, were assessed and signs of cataract or pseudophakia analyzed. The research aimed to explore the correlation between fetal growth restriction and/or prematurity indicated by BW and the frequency of cataract and pseudophakia.

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Injuries associated with contemporary life, such as automobile crashes and sports injuries, can lead to large numbers of traumatic neuromuscular injuries that are intimately associated with bone fractures. Regulatory and non-coding RNAs play essential roles in multiple cellular processes, including osteogenic differentiation and bone healing. In this review, we discuss the most recent advances in our understanding of the regulatory and non-coding RNA biology of osteogenic differentiation in stem, stromal and progenitor cells.

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Polarity and migration of cranial and cardiac neural crest cells: underlying molecular mechanisms and disease implications.

Front Cell Dev Biol

January 2025

Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile.

The Neural Crest cells are multipotent progenitor cells formed at the neural plate border that differentiate and give rise to a wide range of cell types and organs. Directional migration of NC cells and their correct positioning at target sites are essential during embryonic development, and defects in these processes results in congenital diseases. The NC migration begins with the epithelial-mesenchymal transition and extracellular matrix remodeling.

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Mechanistic insights into vascular biology via methyltransferase-like 3-driven N-adenosine methylation of RNA.

Front Cell Dev Biol

January 2025

Department of Pediatrics, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Ministry of Education), NHC Key Laboratory of Chronobiology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China.

Recent advancements in the mechanistic comprehension of vascular biology have concentrated on METTL3-mediated N-methyladenosine modification of RNA, which modulates a spectrum of RNA functionalities with precision. Despite extensive investigations into the roles and mechanisms of METTL3 within vascular biology, a holistic review elucidating their interconnections remains absent. This analysis endeavors to meticulously scrutinize the involvement of METTL3 in both the physiological and pathological paradigms of vascular biology.

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Soil microbial communities play a vital role in accelerating nutrient cycling and stabilizing ecosystem functions in forests. However, the diversity of soil microbiome and the mechanisms driving their distribution patterns along elevational gradients in montane areas remain largely unknown. In this study, we investigated the soil microbial diversity along an elevational gradient from 650 m to 3,800 m above sea level in southeast Tibet, China, through DNA metabarcode sequencing of both the bacterial and fungal communities.

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Predictive performance of noninvasive factors for liver fibrosis in severe obesity: a screening based on machine learning models.

J Diabetes Metab Disord

June 2025

Center for Global Health Research, Saveetha Institute of Medical and Technical Sciences, Saveetha Medical College and Hospitals, Saveetha University, Chennai, India.

Objectives: Liver fibrosis resulting from nonalcoholic fatty liver disease (NAFLD) and metabolic disorders is highly prevalent in patients with severe obesity and poses a significant health challenge. However, there is a lack of data on the effectiveness of noninvasive factors in predicting liver fibrosis. Therefore, this study aimed to assess the relationship between these factors and liver fibrosis through a machine learning approach.

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