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Chinese Journal of Clinical Pharmacology and Therapeutics ›› 2018, Vol. 23 ›› Issue (12): 1359-1363.doi: 10.12092/j.issn.1009-2501.2018.12.007

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Blood concentration monitoring of hydroxychloroquine in patients with autoimmune diseases

LIU Tingting 1, YU Wei 2, YANG Chunlan 1, SHUAI Zongwen 3, GAO Beibei 1, XIA Quan 1   

  1. 1 Departmentof Pharmacy, the First Affiliated Hospital of Anhui Medical University, the Grade 3 Pharmaceutical Chemistry Laboratory of State Administration of Traditional Chinese Medicine, Hefei 230022, Anhui, China; 2 School of Pharmacy, Anhui Medical University, Hefei 230032, Anhui, China; 3 Department of Rheumatology and Immunology, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui, China
  • Received:2018-09-16 Revised:2018-10-19 Online:2018-12-26 Published:2018-12-27

Abstract:

AIM: To explore the factors that influence the blood concentration of hydroxychloroquine (HCQ) including dosage, treatment course, and combination of the drug (hormone, cyclophosphamide, mycophenolate mofetil and methotrexate), as well as the disease type, age and gender of the patients. METHODS: During July 2017 to June 2018, blood samples were collected from autoimmune diseases patients who had been treated with HCQ for more than 6 months in department of rheumatology and immunology of our hospital. The blood concentration of HCQ was monitored by high performance liquid chromatography (HPLC). Statistical analyses were performed by SPSS 16.0. RESULTS: The blood concentration of HCQ was relatively high in patients treated with 0.4 g HCQ per day. Patients that over 50 years old and/or have been treated with HCQ for more than 10 years presented significant higher HCQ blood concentration (P<0.05). Other factors including disease type, gender and drug combination didn't obviously affect the concentration of HCQ. Moreover, we found that the incidence of adverse drug reactions was increased along with the increase of HCQ blood concentration. CONCLUSION: The blood concentration of HCQ is mainly affected by the dosage, the age of the patients, and the course of HCQ treatment. The equivalent therapeutic effect can be achieved with lower HCQ dosage in elderly and long-term treatment patients. Adjustment the dosage according to the blood HCQ concentration monitoring could decrease the incidence of adverse drug reactions.

Key words: hydroxychloroquine, blood concentration, autoimmune diseases, influence factors analysis

CLC Number: