PMID- 35023370 OWN - NLM STAT- MEDLINE DCOM- 20220714 LR - 20220718 IS - 1758-1001 (Electronic) IS - 0004-5632 (Linking) VI - 59 IP - 4 DP - 2022 Jul TI - Reference interval for serum concentration of small dense low-density lipoprotein cholesterol in the healthy Japanese population. PG - 242-252 LID - 10.1177/00045632211066334 [doi] AB - BACKGROUND: Small dense low-density lipoprotein a smaller and denser subfraction among whole low density lipoprotein particles is known to be highly atherogenic. The reference interval (RI) is not strictly defined for serum concentration of sdLDL-cholesterol (sdLDL-C) in Japan. The purpose of this study is to set the reference interval for sdLDL-C in healthy subjects. METHODS: The population of this cross-sectional study was consisted of 40,862 individuals who had annual health checkups, and healthy subjects were extracted based on exclusion criteria such as medical history, social history, and blood sampling test results. Their serum sdLDL-C values were statistically analyzed and the RIs were set in men, premenopausal women, and postmenopausal women separately. RESULTS: The mean values of serum sdLDL-C in healthy subjects were 23.9 mg/dL in men, 20.0 mg/dL in premenopausal women and 23.7 mg/dL in postmenopausal women, and the RIs were 12.6-45.3 mg/dL in men, 11.4-35.1 mg/dL in premenopausal women and 14.6-38.6 mg/dL in postmenopausal women. Serum sdLDL-C values were significantly higher in men than in women. Besides, sdLDL-C values were significantly higher in postmenopausal women than in premenopausal women. In both genders, sdLDL-C values tended to increase with age. CONCLUSION: These results suggest that the RIs for sdLDL-C are recommended as follows: 13-45 mg/dL in men, 11-35 mg/dL in premenopausal women, and 15-39 mg/dL in postmenopausal women, respectively. Aside from these RIs, it is also necessary to define clinical cutoff values graded according to individual risk levels for atherosclerotic cardiovascular diseases. FAU - Nakamura, Marie AU - Nakamura M AUID- ORCID: 0000-0002-0823-689X AD - Department of Insured Medical Care Management, Graduate School of Medical and Dental Science, 92190Tokyo Medical and Dental University (TMDU), Tokyo, Japan. FAU - Yamamoto, Yasushi AU - Yamamoto Y AD - Kansai Occupational Health Association, 84047ACTY Health Evaluation Center, Osaka, Japan. FAU - Imaoka, Wataru AU - Imaoka W AD - Kansai Occupational Health Association, 84047ACTY Health Evaluation Center, Osaka, Japan. FAU - Kuroshima, Toshio AU - Kuroshima T AD - Kansai Occupational Health Association, 26799Senri LC Health Evaluation Center, Osaka, Japan. FAU - Toragai, Ryoko AU - Toragai R AUID- ORCID: 0000-0002-8319-9929 AD - Kansai Occupational Health Association, 26799Senri LC Health Evaluation Center, Osaka, Japan. FAU - Ito, Yasuki AU - Ito Y AD - Vaccine & Diagnostics R&D Department, Denka Co., Ltd, Niigata, Japan. FAU - Yoshida, Hiroshi AU - Yoshida H AD - Department of Laboratory Medicine, Tokyo Jikei University Kashiwa Hospital, Chiba, Japan. FAU - Ai, Masumi AU - Ai M AD - Department of Insured Medical Care Management, Graduate School of Medical and Dental Science, 92190Tokyo Medical and Dental University (TMDU), Tokyo, Japan. LA - eng PT - Journal Article DEP - 20220221 PL - England TA - Ann Clin Biochem JT - Annals of clinical biochemistry JID - 0324055 RN - 0 (Cholesterol, LDL) RN - 97C5T2UQ7J (Cholesterol) SB - IM CIN - Ann Clin Biochem. 2022 May;59(3):157-158. PMID: 35188411 MH - *Atherosclerosis/diagnosis MH - Cholesterol MH - *Cholesterol, LDL/blood MH - Cross-Sectional Studies MH - Female MH - Humans MH - Japan MH - Male MH - Reference Values MH - Risk Factors OTO - NOTNLM OT - Small dense low density lipoprotein cholesterol OT - atherosclerosis OT - reference interval EDAT- 2022/01/14 06:00 MHDA- 2022/07/15 06:00 CRDT- 2022/01/13 08:40 PHST- 2022/01/14 06:00 [pubmed] PHST- 2022/07/15 06:00 [medline] PHST- 2022/01/13 08:40 [entrez] AID - 10.1177/00045632211066334 [doi] PST - ppublish SO - Ann Clin Biochem. 2022 Jul;59(4):242-252. doi: 10.1177/00045632211066334. Epub 2022 Feb 21.