Therapeutic effects of marine collagen peptides on Chinese patients with type 2 diabetes mellitus and primary hypertension.
BACKGROUND
Marine collagen peptides (MCPs) from deep sea fish are shown to ameliorate hyperlipidemia in animal models. The study aimed at examining the effects of MCPs on glucose and lipid metabolism in Chinese patients with type 2 diabetes mellitus (T2DM) and primary hypertension.


METHODS
One hundred patients with T2DM and primary hypertension and 50 healthy subjects (normal controls) were recruited for a randomized double blind study. The patients were randomized into MCPs treatment or patient control groups (n = 50 per group). Both patient controls and normal controls were given carboxymethylcellulose twice daily whereas the MCPs treatment group was given MCPs twice daily for 3 months. Blood pressure, glucose and lipid metabolism, serum high-sensitivity C-reactive protein, cytochrome P450, nitric oxide, bradykinin, prostacyclin, creatinine, uric acid and adipokines were measured at baseline, 1.5 and 3 months after treatment. All patients received regular medicines for control of hyperglycemia and hypertension.


RESULTS
Compared with patient controls, significantly reduced levels of fasting blood glucose, HbA1c, diastolic blood pressure, mean arterial pressure and creatinine but increased levels of Insulin Sensitivity Index and Insulin Secretion Index were observed in patients receiving MCPs treatment. Furthermore, significantly reduced levels of serum triglycerides, total cholesterol, low-density lipoprotein, free fatty acids, cytochrome P450, nitric oxide and prostacyclin but increased levels of high-density lipoprotein, bradykinin and adiponectin were detected in patients taking MCPs.


CONCLUSIONS
MCPs supplement may benefit glucose and lipid metabolism, insulin sensitivity, renal function and hypertension management in Chinese patients with T2DM and hypertension.
Zhu
Cui-Feng
CF
Department of Nutrition, Shenzhen Hospital of Peking University, Shenzhen, People's Republic of China.
Li
Guan-Zhi
GZ
Peng
Hong-Bin
HB
Zhang
Fan
F
Chen
Yun
Y
Li
Yong
Y
D000368:Aged; D000818:Animals; D044466:Asian People; D001786:Blood Glucose / Q000187:drug effects; D001794:Blood Pressure / Q000187:drug effects; D003094:Collagen / Q000494:pharmacology / Q000627:therapeutic use*; D003924:Diabetes Mellitus, Type 2 / Q000188:drug therapy*; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D006973:Hypertension / Q000188:drug therapy*; D050356:Lipid Metabolism / Q000187:drug effects; D008297:Male; D008875:Middle Aged; D010455:Peptides / Q000494:pharmacology / Q000627:therapeutic use*
D001786:Blood Glucose; D010455:Peptides; D003094:Collagen