University of Aden

About: University of Aden is a education organization based out in Aden, Yemen. It is known for research contribution in the topics: Cancer & Population. The organization has 209 authors who have published 267 publications receiving 4281 citations.

On Group Codes Over Elementary Abelian Groups

Abstract: For group codes over elementary Abelian groups we present definitions of the generator and the parity check matrices, which are matrices over the ring of endomorphism of the group. We also lift the theorem that relates the parity check and the generator matrices of linear codes over finite fields to group codes over elementary Abelian groups. Some new codes that are MDS, self-dual, and cyclic over the Abelian group with four elements are given.

Curcumin Scavenges Peroxynitrite in RAW 264.7 Macrophages through Phenolic Hydroxyl Groups

Abstract: Background: Overproduction of free radicals is implicated in cell death and tissue injury. Peroxynitrite (PN) is a highly oxidizing and short-lived free radical that is formed by the interaction of nitric oxide (NO) with superoxide. Curcumin is a natural compound obtained from Curcuma longa and has high antioxidant and anti-inflammatory activities. Aim: We investigated the PN scavenging ability of curcumin to determine its potential as a therapeutic agent for chronic diseases caused by highly oxidative molecules. Methodology: We examined the PN scavenging ability of curcumin either by directly incubating lipopolysaccharide (LPS)+interferon (IFN)-γ-stimulated RAW 264.7 murinacrophages with PN or indirectly through incubation with a PN donor (the artificial substrate SIN-1). Student t-test and one-way ANOVA were used to determine the statistical significance of differences between the experimental and control groups. Results: The results demonstrate that curcumin inhibits PN and the synthesis of PN from SIN-1. Curcumin also significantly improved the viability of LPS+IFN-γ-treated RAW 264.7 macrophages and inhibited NO production. In macrophages, curcumin inhibited cellular PN synthesis, as evidenced by the absence of 3-nitrotyrosine, a marker of PN-oxidized proteins. Conclusion: Curcumin attenuates the immune responses that lead to cellular damage and cell death through suppression or scavenging of cytotoxic molecules such as NO and PN. The role of the phenolic hydroxyl of curcumin is critical in PN scavenging.

On Study K ^ h Generalized Birecurrent Affinely Connected Space

Abstract: In the present paper we introduce a KKh – generalized birecurrent space which characterized by the condition KKjjjjh|l |mm ii = λλl KKjjjjh|mm ii + bblmm KKjjjjh ii , KKjjjjh ii ≠ 0, where λλl and bblmm are non-zero covariant vector fields and covariant tensor field of second order, respectively. This space satisfies the condition of affinely connected space called KKh – generalized birecurrent affinely connected space.