OBJECTIVETo explore the effect of the interaction between PLIN gene polymorphisms and open lifestyle intervention on weight-loss in Chinese Han adults.

METHODSTotally 109 overweight or obese subjects were assigned by random number table to the intervention group (n=56) or control group (n=53),and subjects in the intervention group received 22-week open lifestyle intervention. Anthropometric and metabolic indicators were measured for all subjects before and after intervention,and the PLIN1,PLIN4,and PLIN6 genotypes were amplified by polymerase chain reaction and sequenced through the first-generation sequencing technologies.

RESULTSAmong all these subjects,the rare allele C was dominant at PLIN1 (0.619),the common allele G was dominant at PLIN4 (0.606),and the common allele A was dominant at PLIN6 (0.564),in which PLIN1 and PLIN4 as well as PLIN4 and PLIN6 were in strong linkage disequilibrium (D'>0.9). After intervention,the body mass index,waist circumference,and body fat percent of female subjects were significantly decreased in intervention group and were lower than in control group;in male subjects,however,only the waist circumference showed significant difference with the control group (P<0.05). Subjects carrying rare allele homozygote of PLIN6 got less weight/fat loss than those carrying common alleles in intervention group,while subjects carrying rare allele of PLIN1 had more weight/fat increase than those with common allele homozygote in control group (P<0.05). Females in intervention group carrying any one of rare allele homozygotes of PLIN1,PLIN4 and PLIN6 got less weight/fat loss than those with common alleles,and female subjects carrying the rare allele homozygote haplotype of PLIN1/PLIN4 or PLIN4/PLIN6 got less weight/fat loss than those with other haplotypes (P<0.05).

CONCLUSIONThe interaction between open lifestyle intervention and PLIN gene polymorphisms can directly influence weight-loss in Chinese Han overweight and obese adults.