PLOS Pathogens :研究发现牙周病和类风湿关节炎之间的关联机制

2013-09-18 佚名 生物谷

出现牙龈疾病是否表示将来会有关节问题?虽然研究人员和临床医生们早就知道这两个流行慢性炎症性疾病--牙周病和类风湿关节炎(RA)之间存在一定的关联,但其中微生物的机制仍不清楚。 发表在PLoS Pathogens杂志上的新研究论文中,路易斯维尔(肯塔基州)学校牙科口腔健康和全身疾病组研究员Jan Potempa博士和来自欧盟牙龈和关节项目组的科学家已经发现了引发牙周疾病的细菌--卟啉单胞菌属,如何

出现牙龈疾病是否表示将来会有关节问题?虽然研究人员和临床医生们早就知道这两个流行慢性炎症性疾病--牙周病和类风湿关节炎(RA)之间存在一定的关联,但其中微生物的机制仍不清楚。

发表在PLoS Pathogens杂志上的新研究论文中,路易斯维尔(肯塔基州)学校牙科口腔健康和全身疾病组研究员Jan Potempa博士和来自欧盟牙龈和关节项目组的科学家已经发现了引发牙周疾病的细菌--卟啉单胞菌属,如何导致包括增加骨骼和软骨破坏在内的疾发病更早、进展更快和更严重的机制。【原文下载

科学家们发现,牙龈卟啉单胞菌(P.gingivalis)产生一种独特的酶--肽酰基精氨酸脱亚氨酶(PAD),进而提高胶原诱导性关节炎(CIA)。PAD改变某些蛋白质的残基成为瓜氨酸,身体识别“受污染”的蛋白质作为入侵者,导致免疫攻击。

在RA患者中,随后的结果是出现慢性炎症,引发关节内骨头和软骨的破坏。同时,Potempa和他的团队研究另一个口腔细菌--中间普雷沃菌(Prevotella intermedia),但了解到它并不生产PAD ,因此也不会影响CIA。

总的来说,研究结果表明,细菌PAD可能构成了牙龈卟啉单胞菌感染和类风湿关节炎之间的机制联系,但这一突破性结论需要进一步的研究与验证。Potempa说,他希望这些研究结果将帮助RA的治疗和预防。

原文下载

Katarzyna J. Maresz, Annelie Hellvard, Aneta Sroka1, Karina Adamowicz, Ewa Bielecka,Joanna Koziel, Katarzyna Gawron, Danuta Mizgalska, Katarzyna A. Marcinska, Malgorzata Benedyk,Krzysztof Pyrc, Anne-Marie Quirke, Roland Jonsson, Saba Alzabin, Patrick J. Venables,Ky-Anh Nguyen, Piotr Myde, Jan Potempa.Porphyromonas gingivalis Facilitates the Development and Progression of Destructive Arthritis through Its Unique Bacterial eptidylarginine Deiminase (PAD).PLOS Pathogens September 2013

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    2014-05-31 cnxcy
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    2013-09-20 lmm397
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