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Updated: May 31, 2026

Du-Moxibustion in a Mouse Model of Ankylosing Spondylitis
Published on: October 27, 2023
Treat ankylosing spondylitis with methazolamide
Xiaotian Chang1, Xinfeng Yan, Yunzhong Zhang
1National Laboratory for Bio-Drugs of Ministry of Health, Provincial Laboratory for Modern Medicine and Technology of Shandong, Research Center for Medicinal Biotechnology of Shandong Academy of Medical Sciences, Jingshi Road 18877, Jinan, Shandong 250062, P. R. China. changxt@126.com
Methazolamide, a carbonic anhydrase inhibitor, showed effectiveness in treating active ankylosing spondylitis (AS). This drug may help manage AS symptoms by targeting bone resorption and formation processes.
Area of Science:
- Rheumatology
- Pharmacology
- Biochemistry
Background:
- Ankylosing spondylitis (AS) is characterized by increased bone resorption and formation.
- Carbonic anhydrase inhibitors are known to reduce bone resorption.
- Elevated carbonic anhydrase I (CA1) expression was observed in AS synovium.
Purpose of the Study:
- To evaluate the efficacy and safety of methazolamide for treating active ankylosing spondylitis.
- To investigate the potential of targeting carbonic anhydrase activity in AS management.
Main Methods:
- Two patients with active AS were treated with methazolamide (25 mg twice daily).
- Disease activity was assessed using BASDAI and BASFI scores, ESR, and calcium levels.
- Radiographic changes in sacroiliac joints were evaluated using CT scans.
Main Results:
- Methazolamide treatment led to reduced BASDAI scores in both patients.
- Patient S showed improvement in BASFI and a decrease in ESR and calcium levels.
- CT scans indicated clearer articular surfaces and reduced calcification in sacroiliac joints, with no significant side effects.
Conclusions:
- Methazolamide demonstrated effectiveness in managing active ankylosing spondylitis.
- The drug may improve AS symptoms by inhibiting carbonic anhydrase activity involved in bone remodeling.
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