We propose a compartmental mathematical model for the spread of the COVID-19 disease with special focus on the transmissibility of super-spreaders individuals. We compute the basic reproduction number threshold, we study the local stability of the disease free equilibrium in terms of the basic reproduction number, and we investigate the sensitivity of the model with respect to the variation of each one of its parameters. Numerical simulations show the suitability of the proposed COVID-19 model for the outbreak that occurred in Wuhan, China.
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http://dx.doi.org/10.1016/j.chaos.2020.109846 | DOI Listing |
Ecotoxicol Environ Saf
January 2025
School of Basic Medical Sciences, Hubei University of Chinese Medicine, Wuhan 430065, China; Hubei Shizhen Laboratory, Wuhan 430061, China. Electronic address:
In this study, male Sprague-Dawley (SD) rats were exposed to bisphenol S (BPS) at environmentally relevant concentrations to investigate its reproductive toxicity and evaluate its effects on the gut-blood-testicular axis. After 28 days of exposure to BPS (0.05 and 20 mg/kg), the results showed a reduction in weight gain and the induction of reproductive toxicity in male rats, including decreased sperm parameters, lower sperm viability, and increased abnormal sperm density and mortality.
View Article and Find Full Text PDFFront Endocrinol (Lausanne)
January 2025
Department of Endocrinology, Chongqing Traditional Chinese Medicine Hospital, Chongqing, China.
Introduction: This study aims to explore the risk factors in the progression of gestational diabetes mellitus (GDM) to type 2 diabetes mellitus (T2DM).
Material And Methods: Relevant studies were comprehensively searched from PubMed, Web of Science, Cochrane Library, and Embase up to March 12. Data extraction was performed.
PeerJ
January 2025
Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha, Hunan Province, China.
Background: Many plants, including those commonly found in the Fagaceae family, produce more flowers and ovules than mature fruits and seeds. In , an ovary contains 16-24 ovules, but only one develops into a seed. The other ovules abort or otherwise fail to fully develop, but the reason for this is unknown.
View Article and Find Full Text PDFActa Vet Scand
January 2025
Department of Clinical Sciences, Faculty of Veterinary Medicine and Animal Science, Swedish University of Agricultural Sciences, PO Box 7054, 750 07, Uppsala, Sweden.
Background: The societal value of cats, dogs and horses is high, and the companion and sport animal health care sector is growing. Clinical research concerning cats, dogs and horses is crucial for the development of evidence-based medical care that benefits animals and their owners, and has implications for human and environmental health from a One Health perspective. Basic information on companion animal and equine research enables more directed measures to improve conditions for research within the area.
View Article and Find Full Text PDFSci Rep
January 2025
Reproductive Biology Laboratory, Centre for Reproductive Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, 1105AZ, The Netherlands.
Radiation therapy is a common treatment modality for lung cancer, and resistance to radiation can significantly affect treatment outcomes. We recently described that lung cancer cells that express more germ cell cancer genes (GC genes, genes that are usually restricted to the germ line) can repair DNA double-strand breaks more rapidly, show higher rates of proliferation and are more resistant to ionizing radiation than cells that express fewer GC genes. The gene encoding TRIP13 appeared to play a large role in this malignant phenotype.
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