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384) Haplogroups A was implicated as a risk factor for AgP, while haplogroups D exhibited a protective effect in this disease.

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PMID:24117188 DOI:10.3109/19401736.2013.840589

2015 Mitochondrial DNA

* Association of mitochondrial DNA displacement loop polymorphisms and aggressive periodontitis in a Chinese population: a pilot study.

- To examine whether certain mitochondrial DNA (mtDNA) haplogroups and/or alterations affect susceptibility to aggressive periodontitis (AgP), we analyzed the mtDNA D-Loop region in a Han Chinese population. The mtDNA haplogroups were analyzed in 58 patients with AgP and 50 periodontally healthy controls. The frequency of haplogroups A in AgP group was significantly higher than that in the control group (p=0.007). Furthermore, the frequency of haplogroup D was higher in the control group than that in AgP group (p=0.007). The frequencies of D-Loop polymorphisms m.16126T>C, m.16290C>T and m.152 T> C were significantly higher in patients with AgP compared with controls (p=0.029, 0.014 and 0.022, respectively). Additionally, the frequencies of three other D-Loop polymorphisms, m.16223C>T m.489 T>C and m.515CA deletion (del) were significantly lower in patients with AgP compared with controls (p=0.042, 0.003 and 0.026, respectively). Our study showed for the first time, an association between AgP and mtDNA haplogroups. Haplogroups A was implicated as a risk factor for AgP, while haplogroups D exhibited a protective effect in this disease. These observations may provide a new perspective on the study of the pathogenesis of periodontitis.

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