Putative Mechanisms Responsible for the Antihyperglycemic Action of Lactobacillus paracasei HII01 in Experimental Type 2 Diabetic Rats

Despite the updated knowledge of the impact of gut dysbiosis on diabetes, investigations into the beneficial effects of individual bacteria are still required. This study evaluates the antihyperglycemic efficacy of Lactobacillus paracasei HII01 and its possible mechanisms in diabetic rats. Diabetic rats were assigned to receive vehicle, L. paracasei HII01 (108 CFU/day), metformin 30 (mg/kg) or a combination of L. paracasei HII01 and metformin. Normal rats given vehicle and L. paracasei HII01 were included. Metabolic parameters, including in vitro hemi-diaphragm glucose uptake, skeletal insulin-signaling proteins, plasma lipopolysaccharide (LPS), gut permeability, composition of gut microbiota and its metabolites, as well as short-chain fatty acids (SCFAs), were assessed after 12 weeks of experiment. The results clearly demonstrated that L. paracasei HII01 improved glycemic parameters, glucose uptake, insulin-signaling proteins including pAktSer473, glucose transporter 4 (GLUT4) and phosphorylation of AMP-activated protein kinase (pAMPKThr172), tumor necrosis factor (TNF-α) and nuclear factor-κB (NF-kB) in diabetic rats. Modulation of gut microbiota was found together with improvement in leaky gut, endotoxemia and SCFAs in diabetic rats administered L. paracasei HII01. In conclusion, L. paracasei HII01 alleviated hyperglycemia in diabetic rats primarily by modulating gut microbiota along with lessening leaky gut, leading to improvement in endotoxemia and inflammation-disturbed insulin signaling, which was mediated partly by PI3K/Akt signaling and AMPK activation.

The effect of supplementation of Lactobacillus paracasei HII01 on salivary cortisol, and dehydroepiandrosterone sulfate (DHEA-S) levels

Background of the study: Fatigue is one of the serious health issues, and stress is the main factor that induces chronic fatigue syndrome (CFS). The dysregulation of stress management pathway may account for the development of CFS. The human body comprises several neurobiological networks to manage physical and emotional insults. Hypothalamic-pituitary- adrenal (HPA) axis is one of the important neuroendocrine networks involved in the neurophysiological activity of the host system. The response of HPA axis depends on the physical and psychological state of stress and other factors like time and duration of stress. The probiotic supplements are proved as an adjuvant therapeutic agent for several diseases. Aims and Objective: The aim of the current study was to evaluate the effect of Lactobacillus paracasei HII01 supplementation on salivary cortisol and DHEA-S levels of fatigue subjects. Materials and Methods: After 12-weeks of probiotic intervention significantly reduced the salivary cortisol level, while DHEA-S level was not affected. The ratio of cortisol: DHEA-S was reduced after probiotic intervention. Results: The results concluded that L. paracasei HII01 has the ability to reduce the stress level in fatigue subjects by reducing the salivary cortisol level. Conclusion: The results evidently to recommend that the ingestion of 12.5 billion cells of L. paracasei HII01 per day for 12 weeks significantly amended HPA-Axis by lowering salivary cortisol and ratio cortisol: DHEA-S in fatigue subjects.

Effect of Lactobacillus paracasei HII01 on lipid profile and blood parameters in hypercholesterolemic patients: A preliminary study

Background: Probiotics are live microbes that when administered in suitable amounts, confer a health benefit on the host. Probiotics are considered as a complementary and supportive therapeutic agent for the treatment of several diseases and for the management of several disorders. Hypercholesterolemia is a major risk factor for the incidence of cardiovascular (CV) diseases. Several pharmacological and dietary approaches are proposed and used to improve the cholesterol profile. Aims and Objective: The objective of the current study was to study the effect of probiotic supplementation (Lactobacillus paracasei HII01) on high-density lipoprotein (HDL), and low-density lipoprotein (LDL), lipopolysaccharide (LPS), and immunoglobulin A (IgA) levels in hypercholesterolemic patients. Materials and Methods: Ten hypercholesterolemic subjects were supplemented with 12.5 × 109 CFU of HII01 per day for 12 weeks. Blood samples were collected at baseline and after the intervention period. The LDL-C, HDL-C, LPS, and IgA content were assessed by outsourcing and ELISA methods. Results: After 12 weeks of intervention, HDL (from 61.14 ± 9.65 to 67.29 ± 7.99 mg/DL), LDL (from 141.57 ± 31.95 to 126.29 ± 36.23 mg/DL), IgA (446.31 ±262.00 to 939.62 ± 758.52 ng/ml), and LPS (113.53 ± 40.07 to 72.78 ± 32.39 pg/ml) levels were significantly changed in the probiotic-supplemented group when compared to the baseline value. Conclusion: The supplementation of L. paracasei HII01 may help to improve the lipid profile, reduce the endotoxin level and have the impact of immune activation in hypercholesterolemic subjects. Additional studies are mandatory to disclose the favorable effect of the probiotic strain L. paracasei HII01.

Probiotic Lactobacillus paracasei HII01 protects rats against obese-insulin resistance-induced kidney injury and impaired renal organic anion transporter 3 function

The relationship between gut dysbiosis and obesity is currently acknowledged to be a health topic which causes low-grade systemic inflammation and insulin resistance and may damage the kidney. Organic anion transporter 3 (Oat3) has been shown as a transporter responsible for renal handling of gut microbiota products which are involved in the progression of metabolic disorder. The present study investigated the effect of probiotic supplementation on kidney function, renal Oat3 function, inflammation, endoplasmic reticulum (ER) stress, and apoptosis in obese, insulin-resistant rats. After 12 weeks of being provided with either a normal or a high-fat diet (HF), rats were divided into normal diet (ND); ND treated with probiotics (NDL); HF; and HF treated with probiotic (HFL). Lactobacillus paracasei HII01 1 × 108 colony forming unit (CFU)/ml was administered to the rats daily by oral gavage for 12 weeks. Obese rats showed significant increases in serum lipopolysaccharide (LPS), plasma lipid profiles, and insulin resistance. Renal Oat 3 function was decreased along with kidney dysfunction in HF-fed rats. Obese rats also demonstrated the increases in inflammation, ER stress, apoptosis, and gluconeogenesis in the kidneys. These alterations were improved by Lactobacillus paracasei HII01 treatment. In conclusion, probiotic supplementation alleviated kidney inflammation, ER stress, and apoptosis, leading to improved kidney function and renal Oat3 function in obese rats. These benefits involve the attenuation of hyperlipidemia, systemic inflammation, and insulin resistance. The present study also suggested the idea of remote sensing and signaling system between gut and kidney by which probiotic might facilitate renal handling of gut microbiota products through the improvement of Oat3 function.