PMID- 35011030 OWN - NLM STAT- MEDLINE DCOM- 20220121 LR - 20240226 IS - 2072-6643 (Electronic) IS - 2072-6643 (Linking) VI - 14 IP - 1 DP - 2021 Dec 29 TI - An Avocado Extract Enriched in Mannoheptulose Prevents the Negative Effects of a High-Fat Diet in Mice. LID - 10.3390/nu14010155 [doi] LID - 155 AB - Beginning at 16 weeks of age and continuing for 44 weeks, male C57BL/6J were fed either a control (CON) diet; a high-fat (HF) diet (60% unsaturated); or the HF diet containing an extract of unripe avocados (AvX) enriched in the 7-carbon sugar mannoheptulose (MH), designed to act as a glycolytic inhibitor (HF + MH). Compared to the CON diet, mice on the HF diet exhibited higher body weights; body fat; blood lipids; and leptin with reduced adiponectin levels, insulin sensitivity, VO2max, and falls from a rotarod. Mice on the HF + MH diet were completely protected against these changes in the absence of significant diet effects on food intake. Compared to the CON diet, oxidative stress was also increased by the HF diet indicated by higher levels of total reactive oxygen species, superoxide, and peroxynitrite measured in liver samples by electron paramagnetic resonance spectroscopy, whereas the HF + MH diet attenuated these changes. Compared to the CON, the HF diet increased signaling in the mechanistic target of the rapamycin (mTOR) pathway, and the addition of the MH-enriched AvX to this diet attenuated these changes. Beyond generating further interest in the health benefits of avocados, these results draw further new attention to the effects of this rare sugar, MH, as a botanical intervention for preventing obesity. FAU - Pistell, Paul J AU - Pistell PJ AD - Department of Psychology, Towson University, 8000 York Road, Towson, MD 21252, USA. FAU - Utsuki, Tadanobu AU - Utsuki T AD - Institute for Drug Discovery, Purdue University, 720 Clinic Drive, West Lafayette, IN 47907, USA. FAU - Francis, Joseph AU - Francis J AD - Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Skip Bertman Drive, Baton Rouge, LA 70803, USA. FAU - Ebenezer, Philip J AU - Ebenezer PJ AD - Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Skip Bertman Drive, Baton Rouge, LA 70803, USA. FAU - Terrebonne, Jennifer AU - Terrebonne J AD - Pennington Biomedical Research Center, Louisiana State University, 5600 Perkins Road, Baton Rouge, LA 70808, USA. FAU - Roth, George S AU - Roth GS AD - GeroScience, Inc., 19895 Southern Hills, Baton Rouge, LA 70809, USA. FAU - Ingram, Donald K AU - Ingram DK AD - Pennington Biomedical Research Center, Louisiana State University, 5600 Perkins Road, Baton Rouge, LA 70808, USA. AD - GeroScience, Inc., 19895 Southern Hills, Baton Rouge, LA 70809, USA. LA - eng GR - Grant #1-P50 AT002776-01/AT/NCCIH NIH HHS/United States PT - Journal Article DEP - 20211229 PL - Switzerland TA - Nutrients JT - Nutrients JID - 101521595 RN - 0 (Heptoses) RN - 0 (Plant Extracts) RN - 0 (mannoheptose) RN - EC 2.7.1.1 (mTOR protein, mouse) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) SB - IM MH - Animals MH - Diet, High-Fat/*adverse effects MH - *Dietary Supplements MH - Heptoses/*administration & dosage/analysis/pharmacology MH - Male MH - Mice, Inbred C57BL MH - Obesity/*etiology/*prevention & control MH - Oxidative Stress/drug effects MH - Persea/*chemistry MH - *Phytotherapy MH - Plant Extracts/*administration & dosage/analysis/pharmacology MH - Signal Transduction/drug effects MH - TOR Serine-Threonine Kinases/metabolism MH - Mice PMC - PMC8746741 OTO - NOTNLM OT - adipokines OT - glycolysis OT - insulin OT - mTOR OT - metabolism OT - obesity OT - oxidative stress OT - rare sugar COIS- Ingram and Roth declare financial interest in the avocado extract as the Chief Scientific Officer and Chief Executive Officer, respectively, of GeroScience, Inc., which owns patents to the product. No other author has a conflict of interest. EDAT- 2022/01/12 06:00 MHDA- 2022/01/22 06:00 PMCR- 2021/12/29 CRDT- 2022/01/11 01:13 PHST- 2021/11/17 00:00 [received] PHST- 2021/12/22 00:00 [revised] PHST- 2021/12/26 00:00 [accepted] PHST- 2022/01/11 01:13 [entrez] PHST- 2022/01/12 06:00 [pubmed] PHST- 2022/01/22 06:00 [medline] PHST- 2021/12/29 00:00 [pmc-release] AID - nu14010155 [pii] AID - nutrients-14-00155 [pii] AID - 10.3390/nu14010155 [doi] PST - epublish SO - Nutrients. 2021 Dec 29;14(1):155. doi: 10.3390/nu14010155.