Collagen IV comprises the predominant protein network of basement membranes, a specialized extracellular matrix, which underlie epithelia and endothelia. These networks assemble through oligomerization and covalent crosslinking to endow mechanical strength and shape cell behavior through interactions with cell-surface receptors. A recently discovered sulfilimine (S=N) bond between a methionine ...

Various networks, such as transcriptional, gene regulatory, metabolic or protein-protein interaction networks of various organisms have been studied, which provide insights into metabolism and regulation. Here, we have attempted to construct the metabolic network of Mycobacterium tuberculosis wherein the fatty acid biosynthesis pathway was chosen for analysis of the potential drug targeting. Th...

Neurons compensate for changes in network activity by altering the sensitivity of transmission across collections of synapses by up- or downregulating the number of synaptic AMPA receptors. We recently reported that, in parallel to increasing AMPA receptor surface expression, suppression of network activity with TTX increases protein SUMOylation by decreasing levels of the deSUMOylating enzyme ...

single-gene disorders occur when mutation in a gene causing alteration of gene function while in multifactorial disorders, mutations occur in multiple genes, and these are usually coupled with environmental causes. in addition, in a multifactorial disorder such as diabetes, the complication is under the influence of different genes. for example, in diabetic retinopathy many genes are involved i...

background: nowadays, drug and observation are advised to patients with lymphocytic hypophysitis and in some cases with nonfunctioning pituitary macoadenoma, instead of surgery. case presentation: in this article, we report a woman with nonfunctional pituitary macroadenoma and panhypopitutarism and negative criteria for lymphocytic hypophysitis associated with increased liver enzymes. after thr...

amino acid dehydrogenases (l-amino acid: oxidoreductase deaminating ec 1.4.1.x) are members of the wider superfamily of oxidoreductases that catalyze the reversible oxidative deamination of an amino acid to its keto acid and ammonia with the concomitant reduction of either nad+, nadp+ or fad. these enzymes have been received much attention as biocatalysts for use in biosensors or diagnostic kit...

deep-seated fungal infection present with non specific symptoms and involove a large number of different organisms. dna-based technology offers for eariler detection of fungal pathogens and then earlier initiation of antifungal therapy. in this study universal primers common to almost all fungi were used to amplification of internal transcribe spacer 1 and 2 region. subsequent restriction enzym...

angioedema is an asymmetric non-pitting oedema on face, lips, tongue and mucous membranes; any delay in diagnosis and treatment can be fatal. treatment with lisinopril as an angiotensin converting enzyme (ace) inhibitor, can be a reason of angioedema. here we report a case who developed oral-facial edema four years after using lisinopril/hydrochlorothiazide. laryngeal oedema is a main cause of ...

introduction: silymarine extract is currently prescribed by some physicians for treatment of fatty liver disease. in the present study, the effect of administration of tablet containing silymarine extract on plasma homocysteine (hcy), folate, vitamin b12 and liver enzymes activity in non-alcoholic steatohepatitis (nash) was investigated. materials and methods: seventy-four patients (40 female a...