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Life sciences · Journal article
Foods · August 7, 2026
Early or partial results. Treat as a signal, not a conclusion.
This is a preclinical mechanistic study in mice showing that ultrafiltered mulberry leaf albumin-type protein (UMP) reduced high-fat diet-induced weight gain and improved metabolic markers via alterations in gut microbiota and intestinal short-chain fatty acids. The work is exploratory, demonstrates plausible biological pathways, but provides no evidence of efficacy in humans and lacks a concurrent control group.
Uncontrolled preclinical in vivo animal study. High-fat diet-fed C57BL/6J mice; setting and specific entry criteria not detailed beyond HFD exposure.. Intervention: Ultrafiltered mulberry (Morus alba L.) leaf albumin-type protein (UMP), administered daily in low-dose and high-dose regimens for 16 weeks.
UMP reduced body weight gain by 3.85 g (low-dose) and 5.63 g (high-dose) over 16 weeks in HFD-fed mice without affecting food intake UMP improved insulin responsiveness and reduced serum dyslipidemia, hepatic lipid accumulation, and circulating markers of liver injury (ALT, AST) and endotoxemia (LPS) UMP increased colonic short-chain fatty acid levels and protected colonic morphology
Safety was not reported in the material analysed. Check the source before drawing any conclusion about harm.
These findings are mechanistic and exploratory in an animal model. They suggest potential biological pathways by which mulberry leaf protein might influence obesity-related metabolic dysfunction, but human efficacy, safety, and optimal dosing remain entirely unestablished. Clinical translation would require well-controlled trials in human subjects.
Single-arm animal study with surrogate endpoints (weight gain, metabolic markers, microbiota composition) showing mechanistic plausibility but lacking a concurrent comparator group and human translation.
As stated by the source record.
Quoted from the source exactly as published.
These findings are mechanistic and exploratory in an animal model. They suggest potential biological pathways by which mulberry leaf protein might influence obesity-related metabolic dysfunction, but human efficacy, safety, and optimal dosing remain entirely unestablished. Clinical translation would require well-controlled trials in human subjects.
Graded across the dimensions that decide whether you should act, each from what the source actually supports. There is no single score, and where a dimension was not assessed it says so.
Obesity is a chronic metabolic disorder closely associated with dyslipidemia, insulin resistance, low-grade inflammation, and gut microbiota dysbiosis. Mulberry leaves are rich in bioactive proteins, but whether mulberry leaf albumin-type protein can improve diet-induced obesity remains unclear. In this study, ultrafiltered mulberry leaf albumin-type protein (UMP) was prepared and its anti-obesity effects were evaluated in high-fat diet (HFD)-fed C57BL/6J mice. UMP contained 87.12 ± 0.52 g/100 g protein, 2.52 ± 0.00 g/100 g polyphenols, and 8.21 ± 1.49 g/100 g polysaccharides, with two major albumin-type protein bands of approximately 14 and 52 kDa. Structural analysis showed that UMP was mainly composed of β-turns and α-helices. In HFD-fed mice, daily administration of UMP for 16 weeks reduced body weight gain by 3.85 g and 5.63 g in the low- and high-dose groups, respectively, without affecting food intake. Biochemical assays, glucose and insulin tolerance tests, and histological analysis showed that UMP improved insulin responsiveness, alleviated serum dyslipidemia, reduced hepatic lipid accumulation, and decreased circulating alanine aminotransferase, aspartate aminotransferase, and lipopolysaccharide levels. Histological analysis and nuclear magnetic resonance-based short-chain fatty acid quantification further showed that UMP protected colonic morphology and increased colonic short-chain fatty acid levels. Gut microbiota analysis showed that UMP restored microbial diversity, reduced the Firmicutes/Bacteroidota ratio, and enriched potentially beneficial genera, including Ileibacterium and norank_f_Muribaculaceae. Fecal biochemical assays suggested that UMP promoted fecal free fatty acid excretion and partially improved bile acid-related metabolic alterations. Untargeted serum metabolomics revealed that UMP reshaped metabolic pathways related to lipid turnover, bile acid signaling, glucose utilization, and glucuronidation. Correlation analysis linked UMP-enriched bacterial taxa with key metabolites involved in fatty acid and energy metabolism. Together, these findings indicate that UMP attenuates HFD-induced obesity through coordinated regulation of gut microbiota, intestinal metabolites, and systemic metabolic homeostasis. UMP may therefore represent a promising functional dietary protein for the prevention of obesity-related metabolic disorders.
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