hexapeptide/نخر

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[Mechanisms of inhibiting production of tumor necrosis factor alpha by the synthetic hexapeptide--immunophane].

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The authors examined the human blood mononuclear-induced tumor necrosis factor production using the new drug--the synthetic hexapeptide Immunophan. The levels of tumor necrosis factor in the supernatant liquid were measured by the enzyme immunoassay and the cytotoxic test using L-929 fibroblastoid

Granulocyte differentiation inducer, hexapeptide HLDF-6, decreases cytotoxic effect of tumor necrosis factor on HL-60 cell line.

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The effect of hexapeptide HLDF-6, the granulocytic differentiation inducer, on the tumor necrosis factor alpha (TNF-alpha)-induced differentiation and apoptosis of human promyelocytic leukemia HL-60 cells has been investigated. Costimulation of HL-60 cells with HLDF-6 and TNF-alpha enhanced

Synthesis of a cyclic hexapeptide with sequence corresponding to murine tumor necrosis factor-(127-132) as a novel potential antitumor agent.

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A cyclic hexapeptide cyclo(Lys-Gly-Asp-Gln-Leu-Ser-) 10 was synthesized stepwise in solution by acylation of peptide ester trifluoroacetates directly with preactivated Boc-amino acids using the DCC/HOBt method; the final cyclization reaction was performed using the pentafluorophenyl ester method in

Structure and activity of proteins from pathogenic fungi Phytophthora eliciting necrosis and acquired resistance in tobacco.

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The phytopathogenic fungi Phytophthora cryptogea and Phytophthora capsici cause systemic leaf necrosis on their non-host tobacco; in culture they release proteins, called cryptogein and capsicein, which elicit similar necrosis. In addition, both proteins protect tobacco against invasion by the

Hexapeptides from human milk prevent the induction of oxidative stress from parenteral nutrition in the newborn guinea pig.

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BACKGROUND In preterm neonates, peroxides contaminating total parenteral nutrition (TPN) contribute to oxidative stress, which is suspected to be a strong inducer of hepatic complications related to prematurity. Recently, others reported that hexapeptides derived from human milk (HM) exerted free

Tumour necrosis factor (TNF)-alpha primes murine neutrophils when triggered via formyl peptide receptor-related sequence 2, the murine orthologue of human formyl peptide receptor-like 1, through a process involving the type I TNF receptor and subcellular granule mobilization.

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Neutrophil granulocytes play an important role in innate host defence against microbial invasions and they are also the key effector cells in mediating host tissue damage. These functions often rely on the production of reactive oxygen species (ROS) from the membrane-bound NADPH-oxidase system. The

Identification of TNF-alpha binding peptides from a D-amino acid hexapeptide library that specifically inhibit TNF-alpha binding to recombinant p55 receptor.

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Tumour necrosis factor alpha (TNF-alpha) is a pro-inflammatory cytokine with pleiotropic activity that binds to two transmembrane receptors. Its role in mediating the inflammatory response to injury or infection has been well documented and it has been shown to be a causative factor in rheumatoid

Cooperative effect of tumor necrosis factor and gamma-interferon on chemotactic peptide receptor expression and stimulus-induced actin polymerization in HL-60 cells.

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We studied the effect of tumor necrosis factor (TNF) and gamma interferon (IFN-gamma), alone and in combination, on the expression of chemotactic peptide receptors, stimulus-induced actin polymerization, hydrogen peroxide production (H2O2), and expression of nonspecific esterase (NSE) positivity in

Milk‑derived hexapeptide PGPIPN prevents and attenuates acute alcoholic liver injury in mice by reducing endoplasmic reticulum stress

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Bioactive peptides are an emerging area of biomedical research in the study of numerous human diseases, including acute alcoholic liver injury (AALI). To study the role and mechanism of the milk‑derived hexapeptide Pro‑Gly‑Pro‑Ile‑Pro‑Asn (PGPIPN) in preventing and reducing AALI, the present study

UV induces VEGF through a TNF-alpha independent pathway.

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Vascular endothelial growth factor (VEGF) is a potent keratinocyte-derived angiogenic factor. Prior reports suggest that following UV irradiation VEGF in keratinocytes is induced primarily by tumor necrosis factor (TNF)- alpha, a cytokine synthesized and secreted by keratinocytes after UV

Studies of the synthesis, immunology, and cytotoxicity of a cyclic octapeptide corresponding to TNF-alpha-(59-66).

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In an attempt to investigate possible binding domains of the tumor necrosis factors (TNF), we have previously synthesized a cyclic hexapeptide corresponding to murine TNF-(127-132) (cTNF-1). In this report, we describe the synthesis and biological activity of another cyclic octapeptide corresponding

Role of placenta growth factor and its receptor flt-1 in rheumatoid inflammation: a link between angiogenesis and inflammation.

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OBJECTIVE To investigate the direct effects of placenta growth factor (PlGF) and its specific receptor, flt-1, which are known to mediate angiogenesis, on the inflammatory process of rheumatoid arthritis (RA). METHODS Expression of PlGF and flt-1 in the synovial tissue of RA patients was examined

EP80317 Restrains Inflammation and Mortality Caused by Scorpion Envenomation in Mice.

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Over 1 million cases of scorpion stings are estimated every year, whereas current treatment is limited to antivenom serum combined with supportive therapy. Tityus serrulatus scorpion venom (TsV) is composed of diverse molecules, including toxins that induce a catecholamine storm and mediate

The mechanism for activation of the neutrophil NADPH-oxidase by the peptides formyl-Met-Leu-Phe and Trp-Lys-Tyr-Met-Val-Met differs from that for interleukin-8.

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Neutrophil chemotaxis has been shown to be regulated by two different signalling pathways that allow strong chemoattractants, such as bacterial-derived formylated peptides, to dominate over endogenous attractants, such as interleukin-8 (IL-8). Here we show that triggering of the formyl peptide

Anti-inflammatory Effects of PMX205 in Mouse Macrophage Periodontitis Model.

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BACKGROUND C5a receptor antagonist PMX205 is a synthetic hexapeptide capable of blocking C5a-C5a receptor (C5aR) axis by simulating C5a active C-terminal amino acid residues. This hexapeptide presents good anti-inflammatory effects in a series of inflammation models. The anti-inflammatory effect of

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