PMID- 34865326 OWN - NLM STAT- MEDLINE DCOM- 20211207 LR - 20211214 IS - 1000-0607 (Print) IS - 1000-0607 (Linking) VI - 46 IP - 11 DP - 2021 Nov 25 TI - [Electroacupuncture improves glucose and lipid metabolism by regulating APN/AMPK/PPARalpha signaling of skeletal muscle in Zucker diabetic obese rats]. PG - 907-13 LID - 10.13702/j.1000-0607.20210201 [doi] AB - OBJECTIVE: To observe the effect of electroacupuncture (EA) on skeletal muscle adiponectin receptor (Adipor1) / adenylate activated protein kinase (AMPK) / peroxisome proliferator-activated receptor alpha (PPARalpha) signaling pathway and skeletal muscle morphology by the secretion of serum adiponectin in Zucker diabetic obese (ZDF) rats, so as to explore its mechanism underlying regulating glucose and lipid metabolism of type 2 diabetes mellitus (T2DM) and improving skeletal muscle insulin resistance (IR). METHODS: Twelve male ZDF rats and six Zucker thin (ZL) rats were selected. The rats were fed with Purina#5008 high-fat diet for four weeks to induce T2DM model after adaptive feeding with normal diet for one week. The ZDF rats were randomly divided into model group and EA group according to blood glucose level after modeling and 6 ZL rats were used as the blank control group. Rats in the EA group were treated with "Pishu" (BL20), EA stimulation of "Yishu" (EX-B3), "Zusanli" (ST36) and "Sanyinjiao" (SP6), once a day and 6 times a week for 4 weeks. Rats of the model and blank control groups were grabbed and fixed in the same way as EA group. Fasting blood glucose (FBG) was measured before and after EA intervention. Serum levels of insulin (INS), C-peptide (C-P), adiponectin (APN) were measured by radioimmunoassay, and those of free fatty acid (FFA), low-density lipoprotein (LDL), cholesterol (TC), triglyceride (TG) content determined by enzyme colorimetry and insulin resistance index (HOMA-IR) was calculated. The protein expression levels of AdipoR1, AMPK and PPARalpha proteins in the quadriceps femoris tissues were detected by Western blot and histopathological changes of quadriceps femoris muscle were observed by H.E. staining. RESULTS: Compared with the blank control group, the levels of FBG, serum INS, C-P, FFA, LDL, TC, TG and HOMA-IR in the model group were significantly increased (P<0.01, P<0.05), while the levels of serum APN and the expressions of AdipoR1, AMPK and PPARalpha proteins in the skeletal muscle were significantly decreased (P<0.01, P<0.05). Compared with the model group, the levels of FBG, serum INS, C-P, FFA, LDL, TC and HOMA-IR in the EA group were significantly decreased (P<0.01), and those of serum APN and expression levels of AdipoR1, AMPK and PPARalpha proteins in the skeletal muscle significantly increased (P<0.01), but the serum TG level had no remarkable change in the EA group (P>0.05). In addition, H.E. staining showed disordered arrangement of skeletal muscle cells, rupture and fuzziness of muscle fibers, enlargement of the space between muscular fibers and infiltration of small number of adipose cells which were relatively milder in the EA group. CONCLUSION: EA can reduce blood glucose and lipid levels, and improve IR in ZDF rats, which may be related to its functions in up-regulating AdipoR1/AMPK/PPARalpha signaling and in promoting APN secretion. FAU - Duan, Hao-Ru AU - Duan HR AD - School of Acupuncture-moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing 102488, China. FAU - Li, Rui AU - Li R AD - School of Acupuncture-moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing 102488, China. FAU - Song, Shan-Shan AU - Song SS AD - School of Acupuncture-moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing 102488, China. FAU - Hu, Su-Qin AU - Hu SQ AD - Department of Respirology and Allergy, the Third Affiliated Hospital of Shenzhen University, Shenzhen 518020, Guangdong Province. FAU - Zhuang, Shu-Ting AU - Zhuang ST AD - School of Acupuncture-moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing 102488, China. FAU - Li, Qiu-Yan AU - Li QY AD - School of Acupuncture-moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing 102488, China. LA - chi PT - Journal Article PL - China TA - Zhen Ci Yan Jiu JT - Zhen ci yan jiu = Acupuncture research JID - 8507710 RN - 0 (Adiponectin) RN - 0 (PPAR alpha) RN - EC 2.7.11.31 (AMP-Activated Protein Kinases) RN - IY9XDZ35W2 (Glucose) SB - IM MH - AMP-Activated Protein Kinases/metabolism MH - Adiponectin/metabolism MH - Animals MH - *Diabetes Mellitus, Type 2/genetics/metabolism/therapy MH - *Electroacupuncture MH - Glucose/metabolism MH - Lipid Metabolism/genetics MH - Male MH - Muscle, Skeletal/metabolism MH - Obesity/genetics/metabolism/therapy MH - PPAR alpha/genetics/metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Rats, Zucker MH - Signal Transduction OTO - NOTNLM OT - Adiponectin signaling pathway OT - Disorder of glucose and lipid metabolism OT - Electroacupuncture OT - Insulin resistance OT - Type 2 diabetes EDAT- 2021/12/06 06:00 MHDA- 2021/12/15 06:00 CRDT- 2021/12/05 21:59 PHST- 2021/12/05 21:59 [entrez] PHST- 2021/12/06 06:00 [pubmed] PHST- 2021/12/15 06:00 [medline] AID - 10.13702/j.1000-0607.20210201 [doi] PST - ppublish SO - Zhen Ci Yan Jiu. 2021 Nov 25;46(11):907-13. doi: 10.13702/j.1000-0607.20210201.