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Detection and Quantification of Calcitonin Gene-Related Peptide (CGRP) in Human Plasma Using a Modified Enzyme-Linked Immunosorbent Assay
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Detection and Quantification of Calcitonin Gene-Related Peptide (CGRP) in Human Plasma Using a Modified Enzyme-Linked Immunosorbent Assay

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Haplotype-based case-control study of receptor (calcitonin) activity-modifying protein-1 gene in cerebral infarction

T Nakazato1, T Nakayama, T Naganuma

  • 1Fujioka Surgeon Clinic, Gunma, Japan. tnakayam@med.nihon-u.ac.jp

Journal of Human Hypertension
|August 28, 2009
PubMed

Insights

A specific RAMP1 gene haplotype (T-A-C) was identified as a genetic marker for cerebral infarction (CI) in a Japanese population, suggesting RAMP1

Area of Science:

  • Genetics
  • Neuroscience
  • Molecular Biology

Background:

  • The calcitonin gene-related peptide (CGRP) receptor comprises calcitonin receptor-like receptor and receptor activity-modifying protein-1 (RAMP1).
  • RAMP1 deficiency in mice leads to inflammatory responses and elevated CGRP levels, indicating a role in inflammation.
  • Cerebral infarction (CI) is a significant neurological condition with complex genetic underpinnings.

Purpose of the Study:

  • To investigate the association between the human RAMP1 gene and cerebral infarction (CI).
  • To analyze single-nucleotide polymorphisms (SNPs) and haplotypes within the RAMP1 gene in a Japanese population.
  • To identify potential genetic markers for CI susceptibility.

Main Methods:

  • A case-control study was conducted involving 171 CI patients and 234 healthy controls from a Japanese population.
  • Six specific RAMP1 gene SNPs (rs3754701, rs3769048, rs7557078, rs1584243, rs10199956, rs7590387) were genotyped.
  • Haplotype analysis was performed using combinations of selected SNPs to assess genetic associations with CI.

Main Results:

  • No significant differences in genotype or allele frequencies were observed for individual SNPs between CI patients and controls.
  • A significant association was found in the haplotype-based analysis, particularly for the rs3754701-rs3769048-rs7590387 combination (P<0.001).
  • The T-A-C haplotype was found to be significantly more frequent in the CI group compared to the control group (P=0.0024), indicating it as a susceptibility haplotype.

Conclusions:

  • The T-A-C haplotype of the RAMP1 gene is a potential genetic marker associated with increased susceptibility to cerebral infarction.
  • These findings suggest a role for RAMP1 or neighboring genes in the genetic predisposition to CI.
  • Further research is warranted to elucidate the functional mechanisms linking RAMP1 genetic variations to CI pathogenesis.

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