نتایج جستجو برای: pathogenic viruses and bacteria
تعداد نتایج: 16867564 فیلتر نتایج به سال:
Infectious diseases remain a global threat with many people annually contracting the epidemic diseases. Improved understanding of the pathogenesis of bacteria, viruses, fungi, and parasites, along with rapid diagnosis and treatment of human infections are essential to improving infectious diseases outcomes worldwide. In many genomic loci in bacteria and archea, termed Clustered Regularly Inters...
Tight junctions are a component of the epithelial junctional complex, and they form the paracellular diffusion barrier that enables epithelial cells to create cellular sheets that separate compartments with different compositions. The assembly and function of tight junctions are intimately linked to the actomyosin cytoskeleton and, hence, are under the control of signalling mechanisms that regu...
Non-cystic fibrosis (CF) bronchiectasis is a complex disorder characterised by recurrent chest infections and poorly regulated respiratory innate and adaptive immunity. These lead to a ‘‘vicious cycle’’ of impaired mucociliary clearance, chronic infection, bronchial inflammation and progressive lung injury. The most prevalent pathogenic bacteria are Haemophilus influenzae, Pseudomonas aeruginos...
Mucus is a porous biopolymer matrix that coats all wet epithelia in the human body and serves as the first line of defense against many pathogenic bacteria and viruses. However, under certain conditions viruses are able to penetrate this infection barrier, which compromises the protective function of native mucus. Here, we find that isolated porcine gastric mucin polymers, key structural compon...
Neutrophils are the first cells of innate immune system that respond to infection by arriving at sites when pathogens have exceeded physical barriers. Among their response mechanisms against is release neutrophil extracellular traps (NETs), which composed deoxyribonucleic acid and antimicrobial proteins such as elastase, myeloperoxidase, peptides, other in granules. The formation considered an ...
Background and purpose: Lactic acid bacteria (LAB) play an important role in human and other organisms life. Some of LABs kill pathogenic and other harmful microorganisms. Enterococcus are, gram-positive, catalase-negative, cocci forming, non-sporogenesis, and facultative anaerobic bacteria. This study was done to identify and isolate possible probiotic bacteria with benefits to human health fr...
background: the repetitive use of antibiotics in different fields (veterinary and medicine) improves the emergence and occurrence of the resistance phenomenon in pathogenic bacteria. due to the problem of antimicrobial resistance, it is an urgent need to discover new drugs and alternative treatments for the control of bacterial diseases in aquaculture. objectives: the purpose of this study is t...
ABSTRACT The purpose of this study was to investigate the extend of bacterial contaminatim of ice blocks being used on daily basis in the community. In this study fifty samples of ice blocks from April to September 1999 were collected from different areas in the city of Tehran. Experiments were carrid out for the determination of total count of bacteria and the identification of pathog...
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