[Novel double heterozygous mutations on Met306Val and Thr181Asn related to a hereditary coagulation factor VII deficiency]

[Novel double heterozygous mutations on Met306Val and Thr181Asn related to a hereditary coagulation factor VII deficiency] Research Abstract Details 

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[Novel double heterozygous mutations on Met306Val and Thr181Asn related to a hereditary coagulation factor VII deficiency] Abstract Text:

Chuan-qing Tu,Chun-yan Deng,Jian-zeng Wu,Chun-yan Pan,Chun-ying Xie,

OBJECTIVE: To identify the genetic defect of coagulation factor VII in a Chinese family with hereditary FVII deficiency. METHODS: Peripheral blood samples were collected from the proband of hereditary FVII deficiency, female, aged 15, 4 members of her family, and 100 healthy persons. Genomic DNA was isolated. All the exons and exon-intron boundaries of FVII gene were amplified by PCR, then the PCR products were sequenced by direct sequencing. Restrictive endonuclease analysis was performed in all of the family members and the 100 healthy donors to exclude gene polymorphism. Biostructural analysis of the mutated FVII was completed by molecular modeling. RESULTS: Double heterozygous mutations in the proband were identified: A-->G mutation at position 10833 and C-->A mutation at position 9643, resulting in Met306Val and Thr181Asn substitution respectively. Heterozygosity for Met306Val was confirmed in the proband's mother and her elder sister; heterozygosity for Thr181Asn was confirmed in the proband's father. It was found by computer simulated molecular model that the Met306Val replacement, which was located on the surface of the FVII molecule, might cause steric hindrance and change the configuration and function of FVII protein. CONCLUSION: Double heterozygous mutations for Met306Val and Thr181Asn in FVII gene have been found in a proband with hereditary FVII deficiency. The Met306Val substitution in FVII gene is a novel mutation in hereditary FVII deficiency. The heterozygous mutation of FVII gene may change the configuration of FVII protein and result in FVII dysfunction.

[Novel double heterozygous mutations on Met306Val and Thr181Asn related to a hereditary coagulation factor VII deficiency] Publishing Authors By Initials

CQ Tu,CY Deng,JZ Wu,CY Pan,CY Xie,

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[Novel double heterozygous mutations on Met306Val and Thr181Asn related to a hereditary coagulation factor VII deficiency] Journal Published:

PUBLICATION TYPE: Randomized Controlled Trial

Journal: Zhonghua yi xue za zhi

VOLUME: 86

Page Numbers: 124-7

Journal Abbreviation: Zhonghua Yi Xue Za Zhi

ISSN: 0376-2491

DAY: 10

MONTH: Jan

YEAR: 2006

[Novel double heterozygous mutations on Met306Val and Thr181Asn related to a hereditary coagulation factor VII deficiency] Information

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LANGUAGE: chi

NlmUniqueID: 7511141

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AFFILIATION: Department of Heamatology, Bao'an People's Hospital, Shenzhen 518101, China.

Country: China

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MEDLINETA: Zhonghua Yi Xue Za Zhi

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