title: [Relationship between gene polymorphism of fibronectin and pneumoconiosis].
abstract: OBJECTIVE
  To explore the relationship between the genetic polymorphism of fibronectin (FN) (4 genetic locus) and pneumoconiosis.
  
  
  METHODS
  128 male I-period pneumoconiosis were selected as cases who were examined with radiography and diagnosed by the Pneumoconiosis Diagnosis Expert Panel, based on the Chinese National Diagnosis Criteria of Pneumoconiosis (GBZ 70 - 2002). According to 1:1 paired matching method, 128 dust exposure workers were selected as control who were exposed to same dust as cases. The difference of age and cumulative length of service between case and control was not over five years and two years, respectively. 5 ml peripheral venous blood was drawn and anticoagulated with 2% EDTA. The polymorphisms of FN (MspI, TaqIb, HindIII, HaeIIIb) were detected, using the method of polymerase chain restriction fragment length polymorphism (PCR-RFLP) techniques and PCR.
  
  
  RESULTS
  The frequencies of FN Msp I (CC) in cases and control groups were 10.9% and 3.9%, respectively. The difference was significant (P < 0.05). The frequencies of FN (MspI) C allele were 41.8% and 31.2% in case and control, and the difference between cases and controls was significant (P < 0.05). The frequencies of FN HaeIIIb (AA) genotype in cases (24.2%) was higher than that in control groups (17.9%), OR = 5.0 (95% CI: 4.840 approximately 24.210). The frequencies of FN (HaeIIIb) A allele were 51.9% and 42.2% in case and control, and the difference was significant (P < 0.05). The difference of TaqIb and HindIII genotype between cases and controls were not significant (P > 0.05).
  
  
  CONCLUSIONS
  The risk of suffering from pneumoconiosis increases in workers carrying FN (MspICC or HaeIIIb AA) genotype after exposure to dust. Workers both carrying FN (HaeIIIb AA) and (MspICC) genotypes are more susceptible to pneumoconiosis. The relationship between genetic polymorphism of FN (TaqIIb, HindIII) and pneumoconiosis has not been found.
authors.affiliation: Department of Occupational and Environmental Health, North China Coal Medical College, Tangshan 063000, China.
authors.forename: Xue-yun
authors.initials: XY
authors.lastname: Fan
authors.forename: Yong-heng
authors.initials: YH
authors.lastname: Wang
authors.forename: Cui-lan
authors.initials: CL
authors.lastname: Li
authors.forename: San-qiao
authors.initials: SQ
authors.lastname: Yao
authors.forename: Yan
authors.initials: Y
authors.lastname: Cao
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005353:Fibronectins / Q000235:genetics*; D020022:Genetic Predisposition to Disease; D005838:Genotype; D006801:Humans; D008297:Male; D008875:Middle Aged; D011009:Pneumoconiosis / Q000235:genetics*; D012150:Polymorphism, Restriction Fragment Length
chemical_list: D005353:Fibronectins