Probiotic Property and Anti-Obesity Effect of Lactiplantibacillus plantarum KC3

Staphylococcus epidermidis SAS1: new probiotic candidate for obesity and allergy treatment their mechanistic insights and cytotoxicity evaluation

Background

Probiotics are live bacteria that provides numerous healthy and beneficial effects to the consumers. The present study aimed to investigate the effect of a probiotic candidate Staphylococcus epidermidis SAS1, in immunoregulation and obesity management.

Methods

: This probiotic candidate was isolated from a soil sample collected from a region of fruit waste decomposition. In vitro cytotoxicity was assessed using the THP-1 (human leukemia monocytic cell line) cells using MTT assay.

Results

An IC50 value of 47.52 ± 0.18 μg/mL and cell shrinkage were observed along with the release of cellular content of THP-1 cells. The higher production of reactive oxygen species and lesser release of interleukins (IL-4, 5, and 13) are attributed to the antiallergic potential of this strain. Furthermore, in vitro cytotoxicity evaluation using 3T3-L1 cells identified this strain as a promising candidate for anti-obesity treatment. The observed IC50 value was 514.4 ± 0.061 μg/mL.

Discussion

This extract was shown to have good lipase-inhibiting enzyme activity and was reported to prevent adipogenesis, depicted by increased HDL levels and decreased LDL and triglyceride levels. These results suggested that Staphylococcus epidermidis SAS1 may have therapeutic use in the treatment of obesity and allergies.

Effects of probiotics on growth performance, intestinal morphology, intestinal microbiota weaning pig challenged with Escherichia coli and Salmonella enterica

This study aimed to evaluate the effects of mono- and multi-strain lactic acid bacteria (LAB) probiotics on the growth performance, nutrient digestibility, blood profiles, fecal noxious gas emission, intestinal microbiota and intestinal morphology of weaning pigs challenged with or without Escherichia coli (E. coli) and Salmonella enterica (SE). In Exp. 1, a total of 60 crossbred weaning pigs were randomly allotted to one of five dietary treatments. The dietary treatments included: negative control (NC; basal diet with no supplement), positive control (PC; basal diet with 0.01% Lactiplantibacillus plantarum [LP] containing 1.0 × 108 CFU/g), basal diet with 0.1% Pediococcus acidilactici K (K) containing 1.0 × 109 CFU/g (K), basal diet with 0.1% Pediococcus pentosaceus SMFM2016-WK1 (WK1) containing 1.0 × 109 CFU/g (WK1), basal diet with 0.05% K + 0.05% WK1 containing 1.0 × 109 CFU/g (K-WK1). The average daily gain (ADG) was higher in the K group than in the WK1 group. Diarrhea score was lower in the K-WK1 group than in the NC group. At the genus level, Roseburia abundance in WK1 was higher than in the other treatment groups. At the species level, Blautia wexlerae abundance was lower in WK1 than in the other groups, whereas Succinivibrio dextrinosolvens abundance was higher in WK1. The serum pro-inflammatory cytokine levels in the PC and WK1 groups were as low as those in the NC group. Experiment 2 was conducted with two trials in a 2 × 5 factorial arrangement of treatments consisting of two levels of challenge (challenge and non-challenge) with E. coli and SE and five levels of probiotics same as Exp.1. Supplementation with LP and WK1 resulted in higher ADG and lower diarrhea scores than those in the other groups. Consequently, supplementation of WK1 showed a particularly positive effect on growth performance and diarrhea, villus height and intestinal microbiota in oral challenge experiment and feeding trial. Therefore, WK1 might be the most effective among the probiotics used in this experiment.

Lactobacillus paracasei subsp. paracasei NTU 101 prevents obesity by regulating AMPK pathways and gut microbiota in obese rat

This study assessed the anti-obesity effects of Lactobacillus paracasei subsp. paracasei NTU 101 (NTU 101) both in vitro and in vivo. Initially, the cytotoxicity and lipid accumulation inhibitory effects of NTU 101 on 3T3-L1 cells were evaluated using the MTT assay and oil red O assay, respectively. Subsequently, the anti-obesity effects of NTU 101 were investigated in high-fat diet-induced obese rat. Moreover, western blotting was performed to measure the obesity-related protein expression of PPARα, PPARβ, PPARγ, C/EBPα, C/EBPβ, ATGL, p-p38 MAPK, p-ERK1/2, p-AMPK and CPT-1 in both 3T3-L1 adipocytes and adipose and liver tissues. Treatment with 16 × 108 CFU/mL NTU 101 reduced lipid accumulation in 3T3-L1 adipocytes by more than 50 %. Oral administration of NTU 101 significantly attenuated body weight gain, as well as adipose tissue weight. NTU 101 administration enhanced fatty acid oxidation increasing expression levels of PPARα, CPT-1, and p-AMPK proteins in liver tissue, while simultaneously inhibited adipogenesis by reducing PPARγ and C/EBPα proteins in adipose tissue. Furthermore, NTU 101 supplementation positively modulated the composition of gut microbiota, notably increasing the abundance of Akkermansiaceae. This present study suggests that NTU 101 exerts anti-obesity effects by regulating gut microbiota, fatty acid oxidation, lipolysis and adipogenesis.

Effects of Lactiplantibacillus plantarum CBT LP3 and Bifidobacterium breve CBT BR3 supplementation on weight loss and gut microbiota of overweight dogs

The prevalence of obesity in dogs is increasing worldwide. This study evaluated the effects of a mixed probiotic formula on the weight, body condition score (BCS), blood metabolite profiles, and gut microbiota of overweight and obese dogs over a 12-week supplementation period to determine the anti-obesity effects of Lactiplantibacillus plantarum CBT LP3 and Bifidobacterium breve CBT BR3. This was a community-based, randomized study that sampled 41 overweight and obese dogs with a veterinarian-determined BCS of 6 or more. The physical activity of all the subjects was measured using a pedometer designed exclusively for dogs. The food intake was measured using the developed application. Only the treatment group received the mixed probiotic formula twice daily (3 g per dose). A significant decrease in body weight (p < 0.0001), BCS (p < 0.0001), serum TG (p < 0.0001), serum TC (p = 0.0400), and serum leptin (p = 0.0252), and a significantly increased serum adiponectin levels (p = 0.0007) were observed in the treatment group compared with the values in the control group. Microbiota analysis showed that Lactiplantibacillus increased and Erysipelatoclostridium, Staphylococcus, and Gemella decreased more significantly in the treatment group than in the control group. These results suggested that Lactiplantibacillus plantarum CBT LP3 and Bifidobacterium breve CBT BR3 may be effective in alleviating obesity in dogs.

Acute Pre- and Post-administration of Lactiplantibacillus plantarum 2034 and Its Secretory Metabolites Ameliorates Hyperglycaemia, Hyperlipidaemia, and Oxidative Stress in Diabetic Rats

The global prevalence rate of diabetes in 2021 was 6.1% making diabetes one of the top 10 causes of death. Prolonged use of antidiabetic medications is associated with various side effects; therefore, alternative treatment strategies for diabetes need exploration. The antidiabetic properties of Lactiplantibacillus plantarum 2034 was explored both in in vitro and in vivo studies. Secretory metabolites of probiotic L. plantarum 2034 exhibited alpha-glucosidase, alpha-amylase, and lipase inhibitory activities, in vitro. Further, the antidiabetic efficacy of 2034 was evaluated in streptozotocin-nicotinamide-induced diabetic rats. In the therapeutic model, oral administration of L. plantarum resulted in normalization of body weight, fasting blood glucose, total cholesterol (TC), and liver enzymes, and significant (p < 0.05) reduction in insulin and triglyceride (TG) levels. Histological evaluation of pancreas, liver, and kidney showed restoration of normal architecture in probiotic-treated group. Similarly, in a preventive + therapeutic model, 14 days of pre-administration of 2034 in pre, pre + post, and cell-free supernatant resulted in significant reduction in glucose, TG, TC, and liver biochemistry of diabetic rats as compared to untreated diabetic rats. An oral glucose tolerance test showed that the glucose levels normalized within 90 min in all the treated groups. Further, the oxidative stress parameters were also studied that showed that in all the treated groups, the concentration of antioxidant enzymes significantly (p < 0.05) increased as compared to diabetic untreated rats. Thus, administration of L. plantarum 2034 and its metabolites successfully ameliorated hyperglycaemia and hypercholesterolemia in both the models probably due to inhibition of gut enzymes and by increasing the concentration of liver antioxidant enzymes.

Study on the current research trends and future agenda in animal products: an Asian perspective

This study aimed to analyze the leading research materials and research trends related to livestock food in Asia in recent years and propose future research agendas to ultimately contribute to the development of related livestock species. On analyzing more than 200 relevant articles, a high frequency of studies on livestock species and products with large breeding scales and vast markets was observed. Asia possesses the largest pig population and most extensive pork market, followed by that of beef, chicken, and milk; moreover, blood and egg markets have also been studied. Regarding research keywords, "meat quality" and "probiotics" were the most common, followed by "antioxidants", which have been extensively studied in the past, and "cultured meat", which has recently gained traction. The future research agenda for meat products is expected to be dominated by alternative livestock products, such as cultured and plant-derived meats; improved meat product functionality and safety; the environmental impacts of livestock farming; and animal welfare research. The future research agenda for dairy products is anticipated to include animal welfare, dairy production, probiotic-based development of high-quality functional dairy products, the development of alternative dairy products, and the advancement of lactose-free or personalized dairy products. However, determining the extent to which the various research articles' findings have been applied in real-world industry proved challenging, and research related to animal food laws and policies and consumer surveys was lacking. In addition, studies on alternatives for sustainable livestock development could not be identified. Therefore, future research may augment industrial application, and multidisciplinary research related to animal food laws and policies as well as eco-friendly livestock production should be strengthened.