title: Triglyceride-based screening tests fail to recognize cardiometabolic disease in African immigrant and African-American men.
abstract: BACKGROUND
  The prevalence of cardiometabolic disease in Africa now rivals that of Western nations. Therefore, screening programs that lead to effective prevention of cardiometabolic disease in Africans is imperative. Most screening tests for cardiometabolic disease use triglyceride (TG) levels as a criterion. However, the failure rate of TG-based screening tests in African Americans is high. In Africans, the efficacy of TG-based screening tests is unknown. Our goal was to determine the association between hypertriglyceridemia (TG ≥150 mg/dL) and cardiometabolic disease in African and African-American men.
  
  
  METHODS
  This was a cross-sectional study of 155 men (80 African immigrants, 75 African Americans) [age, 35±9 years, mean±standard deviation (SD), body mass index (BMI) 28.5±5.2 kg/m(2)] who self-identified as healthy. Lipid profiles were performed. Glucose tolerance and insulin resistance was determined by oral glucose tolerance tests (OGTT) and the insulin sensitivity index (S(I)), respectively. Cardiometabolic disease was defined by four possible subtypes--prediabetes, diabetes, insulin resistance, or metabolic triad [hyperinsulinemia, hyperapolipoprotein B, small low-density lipoprotein (LDL) particles].
  
  
  RESULTS
  TG levels were higher in men with cardiometabolic disease than without (88±43 versus 61±26 mg/dL, P<0.01). However, <10% of men with cardiometabolic disease had TG ≥150 mg/dL. Even within each cardiometabolic disease subtype, the prevalence of TG ≥150 mg/dL was <10%. Furthermore, TG levels in the 5% of men identified by OGTT as diabetic were ≤100 mg/dL (mean 71±24, range 45-100 mg/dL).
  
  
  CONCLUSIONS
  Hypertriglyceridemia is a poor marker of cardiometabolic disease in men of African descent. Therefore TG-based screening tests fail to identify both African immigrants and African-American men with cardiometabolic disease. As a consequence, the opportunity for early intervention and prevention is lost.
authors.affiliation: Diabetes, Endocrinology, and Obesity Branch, National Institute of Diabetes, Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892-1612, USA.
authors.forename: Sophia S K
authors.initials: SS
authors.lastname: Yu
authors.forename: Natalie L M
authors.initials: NL
authors.lastname: Ramsey
authors.forename: Darleen C
authors.initials: DC
authors.lastname: Castillo
authors.forename: Madia
authors.initials: M
authors.lastname: Ricks
authors.forename: Anne E
authors.initials: AE
authors.lastname: Sumner
mesh_terms: D000328:Adult; D000349:Africa / Q000208:ethnology; D001741:Black or African American / Q000706:statistics & numerical data; D002318:Cardiovascular Diseases / Q000097:blood / Q000175:diagnosis* / Q000453:epidemiology / Q000208:ethnology; D003430:Cross-Sectional Studies; D003940:Diagnostic Techniques, Endocrine; D054242:Emigrants and Immigrants / Q000706:statistics & numerical data; D006801:Humans; D008297:Male; D008403:Mass Screening / Q000379:methods; D008659:Metabolic Diseases / Q000097:blood / Q000175:diagnosis* / Q000453:epidemiology / Q000208:ethnology; D008875:Middle Aged; D011237:Predictive Value of Tests; D014280:Triglycerides / Q000032:analysis* / Q000097:blood
chemical_list: D014280:Triglycerides