Project description:Reduction in visceral adipose tissue (VAT) mass reduces body weight and metabolic disease risk in obese patients. However surgical removal of VAT is highly invasive and thus not clinically feasible. We developed an injectable ice slurry for selective reduction of adipose tissue through cryolipolysis. The aim of this study was to investigate safety, feasibility and mechanism of ice slurry-induced cryolipolysis of VAT. Perigonadal VAT in diet-induced obese mice and rats was subjected to slurry or sham treatment. Body weight and blood chemistry were monitored for 56 days post-treatment. Histological analysis and molecular studies were performed to elucidate mechanisms of fat reduction. Treatment of VAT was well tolerated in all animals. Slurry induced adipocyte cell death via selective cryolipolysis; significant weight loss was noted at day 21 post-treatment. RNA sequencing from treated VAT samples showed increased expression of genes involved in inflammation, immune response, collagen biosynthesis and wound healing, and decreased expression of adipokines. This study demonstrates that slurry treatment is safe and effective in inducing cryolipolysis of VAT and subsequent weight loss in rodents. Ice slurry is promising as a minimally-invasive treatment to reduce visceral adipose tissue.
Project description:Allulose has been shown to moderate obese related dysmetabolism. In previous study, we found that allulose increased the muscle weight in diet-induced obese mice. It is there for hypothesized that allulose alleviated sarcopenia. The 12 month old mice were fed AIN93G with allulose. Allulose supplementation improved the muscle loss in aging mice.
Project description:Obesity is associated with an increased risk of colon cancer. Our current study examines whether weight loss and/or treatment with the non-steroidal anti-inflammatory drug (NSAID) sulindac suppresses the protumor effects of obesity in a mouse model of colon cancer. Azoxymethane-treated male FVB/N mice were fed a low-fat diet (LFD) or high-fat diet (HFD) for 15 weeks, then HFD mice were randomized to remain on HFD (obese) or switch to LFD (formerly obese (FOb-LFD)). Within the control (LFD), obese, and FOb-LFD groups, half the mice were also randomized to start sulindac treatment (140 ppm in the diet). All mice were euthanized seven weeks later. FOb-LFD mice had intermediate levels of body weight, lower than obese but higher than control mice (P<0.05). Sulindac did not affect body weight. Obese mice had greater tumor multiplicity and burden than all other groups (P<0.05). Transcriptomic profiling indicated that both weight loss and sulindac modulate the expression of tumor genes related to invasion and may promote a more anti-tumor immune landscape. Furthermore, the fecal microbes Prevotella and Akkermansia muciniphila, both known to be elevated in colorectal cancer patients, were positively correlated with tumor multiplicity and reduced by sulindac in obese mice. In sum, either moderate weight loss or sulindac treatment completely reversed the effects of chronic obesity on colon tumorigenesis. Our findings suggest that an investigation regarding the effects of NSAID treatment on colon cancer risk and/or progression in obese individuals is warranted, particularly for those unable to achieve moderate weight loss.
Project description:To identify key biological pathways that define susceptibility factors for pulmonary infection during obesity, diet-induced obese (DIO) and regular weight (RW) C57BL/6 mice were exposed to 0.5 M-BM-5g/L inhaled lipopolysaccharide (LPS) for 1 hr/d for 4 days over a period of 2 weeks. Transcriptional responses were measured by global microarray analysis of lung tissue. Groups (N=8 biological replicates) of regular weight (RW) and diet-induced obese (DIO) C57BL/6 mice (15-weeks old at start of exposures) were exposed to either filtered air (sham controls, SC) or 0.5 M-BM-5g/L LPS by nose-only inhalation exposure for 1 hr/day for 4 days over a 10-day period with necropsies occurring on the day following the last exposure (Day 11).
Project description:miRNA profiles were investigated in severely obese individuals before and after a weight loss induced by diet and moderate exercise.
Project description:lean control, obese, and formerly obese C57BL6N mice which underwent weight loss via low-fat diet or verticle sleeve gastrectomy were injected with E0771 cells and tumor growth was monitored
Project description:lean control, obese, and formerly obese C57BL6N mice which underwent weight loss via low-fat diet or verticle sleeve gastrectomy were injected with E0771 cells and tumor growth was monitored
Project description:lean control, obese, and formerly obese C57BL6N mice which underwent weight loss via vertical sleeve gastrectomy or low fat diet were injected with E0771 cells and tumor growth was monitored
Project description:lean control, obese, and formerly obese C57BL6N mice which underwent weight loss via low-fat diet or various forms of calory restriction were injected with E0771 cells and tumor growth was monitored
Project description:lean control, obese, and formerly obese C57BL6N mice which underwent weight loss via low-fat diet or various forms of calory restriction were injected with E0771 cells and tumor growth was monitored
