1.
Transient Receptor Potential Ankyrin 1 (TRPA1) Channel and Neurogenic Inflammation in Pathogenesis of Asthma.
Yang, H, Li, S
Medical science monitor : international medical journal of experimental and clinical research. 2016;:2917-23
Abstract
Asthma is characterized by airway inflammation, airway obstruction, and airway hyperresponsiveness (AHR), and it affects 300 million people worldwide. However, our current understanding of the molecular mechanisms that underlie asthma remains limited. Recent studies have suggested that transient receptor potential ankyrin 1 (TRPA1), one of the transient receptor potential cation channels, may be involved in airway inflammation in asthma. The present review discusses the relationship between TRPA1 and neurogenic inflammation in asthma, hoping to enhance our understanding of the mechanisms of airway inflammation in asthma.
2.
[The relationships between the single nueleotide polymorphisms of CACNA1S gene 11 exon and thyrotoxic hypokalemic periodic paralysis in the people of Han Nationality in Sichuan Province, China].
Xiao, Z, Li, L, Li, S, Yao, Y, Liu, Y, Tian, H
Sheng wu yi xue gong cheng xue za zhi = Journal of biomedical engineering = Shengwu yixue gongchengxue zazhi. 2011;(3):547-52, 558
Abstract
The present research was aimed to investigate the relationships between the single nueleotide polymorphisms (SNPs) of CACNA1S gene 11 exon and thyrotoxic hypokalemic periodic paralysis (THPP)in the people of Han Nationality in Sichuan China. 100 male subjects were divided into four groups in this study, i.e., 22 patients with THPP, 23 patients with hypokalemic periodic paralysis (HPP), 33 patients with thyrotoxicosis but without hypokalemic periodic paralysis (NTHPP), and 22 healthy (control group) subjects. The sequences of the CACNA1S gene exon 11 polymorphisms, for the four groups respectively, were analysed by the SNPs method with polymerase chain reaction-single strand conformation polymorphism (PCR-SSCP) and DNA direct sequencing. A meta-analysis of three additional studies was also performed. Three SNPs of exon 11 of the CACNA1S gene (C1491T, T1551C, C1564T) were present in all the four groups. The polymorphisms C1491T and T1551C were present in both homozygotes and heterozygotes, while the C1564T polymorphism was present only in heterozygotes. The genotype frequencies of variants at C1491T and T1551C were not significantly associated with TPP (dominant model: P=0.530 and P=0.568; allele frequency model: P=0.563 and P=0.568). A Meta-analysis yielded combined odds ratio (OR) for TPP of 2. 12 (95% CI: 0.80-5.60) at C1491T, 2.90 (95% CI: 0.71-11.78) at T1551C, and 1.61 (95% CI: 0.36-7.26) at C1564T with the dominant model. These results suggested that three SNPs of CACNA1S gene exon 11 definitely could exist but could not be associated with TPP people of Han Nationality in Sichuan.
3.
TRP channels as drug targets.
Li, S, Westwick, J, Cox, B, Poll, CT
Novartis Foundation symposium. 2004;:204-13; discussion 213-21, 263-6
Abstract
Ca2+ channel antagonists acting on electrically-excitable cells have proved to be valuable therapeutic agents. The discovery of such agents and the identification of their molecular target resulted from the investigation of unexpected actions of known pharmacological agents. Ca2+ influx through receptor-operated channels in electrically non-excitable cells such as leukocytes is also functionally important, but to date the channels involved have not been successfully exploited as drug targets for anti-inflammatory therapy. Until recently, research in this area has been hindered by the lack of obvious molecular identity, but the emergence of the transient receptor potential (TRP) cation family has yielded promising candidates which may underpin the different receptor-operated Ca2+ influx pathways present in leukocytes. In addition, receptor-operated Ca2+ influx channels are also expressed in electrically-excitable cells suggesting that receptor-operated Ca2+ entry pathways are likely to be of wider significance and emphasizes the breadth of their potential as novel, and as yet, unexplored and unexploited drug targets.