Cited by 314Pharmacology and Obesity TreatmentDiabetes Treatment and ManagementBariatric Surgery and Outcomes

Clinical Efficacy of Orlistat Therapy in Overweight and Obese Patients With Insulin-Treated Type 2 Diabetes

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Kelley, David E., Bray, George A., Pi-Sunyer, F. Xavier, Klein, Samuel, Hill, James, Miles, John, Hollander, Priscilla·2002·Diabetes Care

Abstract

OBJECTIVE—Weight loss improves glycemic control, lipid profiles, and blood pressure in patients with type 2 diabetes. However, successful long-term weight loss is difficult for these patients, particularly those treated with insulin. The aim of this study was to assess the effect of orlistat, a gastrointestinal lipase inhibitor, on weight loss, glycemic control, and cardiovascular risk factors in overweight or obese insulin-treated type 2 diabetic patients. RESEARCH DESIGN AND METHODS—This study was a 1-year multicenter, randomized, double-blind, placebo-controlled trial of orlistat (120 mg three times a day) or placebo combined with a reduced-calorie diet in overweight or obese adults (BMI 28–40 kg/m2) with type 2 diabetes treated with insulin alone or combined with oral agents, but with suboptimal metabolic control (HbA1c 7.5–12.0%). Outcome measurements included changes in body weight, glycemic control, blood pressure, and serum lipids. RESULTS—After 1 year, the orlistat group lost significantly more weight (−3.89 ± 0.3% of baseline body weight, means ± SE) than the placebo group (−1.27 ± 0.3%, P < 0.001). Orlistat treatment, compared with placebo, produced greater decreases in HbA1c (−0.62 ± 0.08 vs. −0.27 ± 0.08%, P = 0.002), fasting serum glucose (−1.63 ± 0.3 vs. −1.08 ± 0.3 mmol/l, P = 0.02), and the required doses of insulin and other diabetic medications. Orlistat also produced greater improvements than placebo in serum total cholesterol (P = 0.0002) and LDL cholesterol concentrations (P = 0.001) and LDL/HDL ratio (P = 0.01). CONCLUSIONS—Orlistat therapy produces clinically significant weight loss, with improvements in glycemic control and cardiovascular disease risk factors, in overweight or obese patients with type 2 diabetes who have suboptimal metabolic control with insulin therapy.

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  • Less weight loss in people with type 2 diabetes than in those without has also been seen with other anti-obesity drugs-orlistat, naltrexone-bupropion, and liraglutide 3.0 mg-and with some behavioral programs.

    “Similar attenuation in weight loss in patients with vs without type 2 diabetes has been observed with other AOM, including orlistat,(44) naltrexone-bupropion,(45) and liraglutide 3.0 mg,(46) as well as with some behavioral interventions.(47, 48)”

    From Semaglutide for the treatment of obesity (2023) · cites this paper as [44]

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Authors
Kelley, D. E., Bray, G. A., Pi-Sunyer, F. X., Klein, S., Hill, J., Miles, J., & Hollander, P.
Affiliations
  • University of Pittsburgh (US)
  • Pennington Research Center, Baton Rouge, Louisiana
  • Columbia University, New York, New York
  • Washington University in St. Louis (US)
  • University of Colorado Denver (US)
  • University of Missouri–Kansas City (US)
  • Baylor College of Medicine (US)
Venue
Diabetes Care
Published
2002-06-01
Volume
25
Issue
6
Pages
1033-1041
ISSN
  • 0149-5992 (ISSN-L)
  • 1935-5548
OpenAlex
W2060268563
Cited by
314
References
35
Citations by year
2026: 5 · 2025: 10 · 2024: 8 · 2023: 8 · 2022: 8 · 2021: 9 · 2020: 7 · 2019: 4 · 2018: 4 · 2017: 12 · 2016: 11 · 2015: 8 · 2014: 10 · 2013: 13 · 2012: 6
FWCI
15.73
Type
journal article
Language
en
Open access
Locations
  • Diabetes Care (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • F. Hoffmann-La Roche
  • University of Missouri
  • University of Pittsburgh
  • University of Missouri-Kansas City
  • Regeneron Pharmaceuticals
Topics
  • Health Sciences › Medicine › Pharmacology › Pharmacology and Obesity Treatment
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Treatment and Management
  • Health Sciences › Medicine › Surgery › Bariatric Surgery and Outcomes
Keywords
orlistat, type 2 diabetes, obesity, overweight, insulin therapy, weight loss, glycemic control, lipase inhibitors, hypocaloric diet, cardiovascular risk factors, serum lipids, LDL cholesterol, HbA1c
MeSH terms
Orlistat, Blood Glucose, Body Weight, Diabetes Mellitus, Diabetes Mellitus, Type 2, Double-Blind Method, Fasting, Female, Glycated Hemoglobin, Humans, Hypoglycemic Agents, Insulin, Lactones, Male, Middle Aged, Obesity, Patient Dropouts, Placebos, Time Factors, Weight Loss, Body Mass Index, Anti-Obesity Agents, Racial Groups

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