title: The Sry3 Y chromosome locus elevates blood pressure and renin-angiotensin system indexes.
abstract: BACKGROUND
  Sex-determining region Y (Sry) is a transcription factor. Our research group has shown that there are multiple copies of Sry in Wistar-Kyoto (WKY) and spontaneous hypertensive (SHR) rats, and that they have novel functions separate from testes determination.
  
  
  OBJECTIVE
  We hypothesized that exogenously delivered Sry3 to the normotensive WKY male kidney would activate the renin-angiotensin system (RAS) and raise blood pressure (BP), based on previous in vitro studies.
  
  
  METHODS
  Sry3 or control vector was electroporated to the left kidney of male WKY rats and the following measurements were taken: BP by telemetry, renin-angiotensin measures by radioimmunoassay, plasma and tissue catecholamines by HPLC with electrochemical detection, sodium by flame photometry, and inulin by ELISA.
  
  
  RESULTS
  Sry3 increased BP 10 to 20 mm Hg compared with controls (P < 0.01) and produced a significant 40% decrease in urine sodium compared with controls (P < 0.05). Sry3 increased renal angiotensin II and plasma renin activity by >100% compared with controls (P < 0.01 and P < 0.05, respectively).
  
  
  CONCLUSIONS
  The findings presented here confirm and extend the argument for Sry3 as one of the genes responsible for the SHR hypertensive Y chromosome phenotype and are consistent with increased tissue RAS activity due to Sry3 and increased sodium reabsorption.
authors.affiliation: Department of Biology, University of Akron, Akron, Ohio 44325-3908, USA. ely1@uakron.edu
authors.forename: Daniel
authors.initials: D
authors.lastname: Ely
authors.forename: Shannon
authors.initials: S
authors.lastname: Boehme
authors.forename: Gail
authors.initials: G
authors.lastname: Dunphy
authors.forename: Michael
authors.initials: M
authors.lastname: Hart
authors.forename: Frank
authors.initials: F
authors.lastname: Chiarappa
authors.forename: Brian
authors.initials: B
authors.lastname: Miller
authors.forename: Almir S
authors.initials: AS
authors.lastname: Martins
authors.forename: Monte
authors.initials: M
authors.lastname: Turner
authors.forename: Amy
authors.initials: A
authors.lastname: Milsted
mesh_terms: D000704:Analysis of Variance; D000818:Animals; D001794:Blood Pressure / Q000235:genetics* / Q000502:physiology; D002395:Catecholamines / Q000378:metabolism; D002851:Chromatography, High Pressure Liquid; D003404:Creatinine / Q000378:metabolism; D004586:Electrophoresis; D004797:Enzyme-Linked Immunosorbent Assay; D005819:Genetic Markers; D005919:Glomerular Filtration Rate; D006305:Health Status Indicators; D006973:Hypertension / Q000235:genetics*; D007668:Kidney / Q000378:metabolism*; D008297:Male; D051381:Rats; D011921:Rats, Inbred WKY; D012084:Renin-Angiotensin System / Q000235:genetics* / Q000502:physiology; D012307:Risk Factors; D051876:Sex-Determining Region Y Protein / Q000235:genetics / Q000378:metabolism; D014998:Y Chromosome / Q000235:genetics* / Q000378:metabolism
chemical_list: D002395:Catecholamines; D005819:Genetic Markers; D051876:Sex-Determining Region Y Protein; D003404:Creatinine