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Biomedicine & Pharmacotherapy =... Nov 2022In Alzheimer's disease (AD), the amyloid-β (Aβ) protein begins to accumulate in the brain 20 years prior to any dementia symptoms manifestation, in which Aβ...
In Alzheimer's disease (AD), the amyloid-β (Aβ) protein begins to accumulate in the brain 20 years prior to any dementia symptoms manifestation, in which Aβ aggregates in the brain, causing destruction of nerve cells and resulting in memory impairments. Lifestyle and diet appear to inhibit Aβ production and amyloid deposition. Therefore, identifying factors that prevent Aβ production and administering them before the onset of AD, may be an effective preventive method. Lactic acid bacteria (LAB) exhibit various health effects on the host and are expected to have protective effects on neurological functions via brain-gut correlation. However, the protective effects of LAB against Aβ are not well understood. We investigated whether LAB feeding could ameliorate the toxicity of Aβ peptide accumulation in transgenic Caenorhabditis elegans expressing the human Aβ peptide in neurons or muscle as an AD model. Aβ expressed in muscle caused myopathy and worm paralysis, while Aβ in neurons disturbed chemotactic activity. Among 14 screened strains, Lactococcus laudensis (LL) and Pediococcus parvulus (PP) prevented the AD worms from losing their chemotaxis behavior and becoming paralyzed by the Aβ peptide. Immunostaining and western blotting indicated that Aβ peptide was significantly suppressed in worms fed these two strains, and binding of the Aβ to vitellogenin was particularly inhibited. Conversely, the mRNA level of the Aβ gene did not change between LL- or PP-fed worms and the control. In conclusion, LL and PP alleviate neurotoxicity by inhibiting Aβ accumulation; AD model worms can be used to screen efficient LAB for AD prevention.
Topics: Animals; Humans; Caenorhabditis elegans; Vitellogenins; Disease Models, Animal; Amyloid beta-Peptides; Alzheimer Disease; RNA, Messenger
PubMed: 36271552
DOI: 10.1016/j.biopha.2022.113769 -
PloS One 2022Individuals with hyperlipidemia are two times more likely to develop atherosclerotic cardiovascular disease (ASCVD) as opposed to those with controlled serum total...
BACKGROUND
Individuals with hyperlipidemia are two times more likely to develop atherosclerotic cardiovascular disease (ASCVD) as opposed to those with controlled serum total cholesterol (TC) levels. Considering the documented adverse events of the current lipid-lowering medications which ultimately affect patient's compliance, substantial efforts have been made to develop new therapeutic strategies. Probiotics, on the other hand, are reported to have lipid-lowering activity with the added benefit of being generally well-tolerated making it an appealing adjuvant therapy.
METHODS
A total of fifty Lactic acid bacteria (LAB) were isolated from raw milk (human and animal) and dairy products. Isolates demonstrating promising in vitro cholesterol removal capabilities were morphologically and biochemically characterized. Lastly, two bacterial candidates were selected for evaluation of their potential hypolipidemic activity using a laboratory animal model. Statistical differences between the means were analyzed by one-way analysis of variance (ANOVA) followed by Tukey's post-hoc test. A p-value < 0.05 was considered statistically significant.
RESULTS
Most of the isolates demonstrated an in vitro cholesterol removal activity. The six LAB isolates showing the highest cholesterol removal activity (36.5-55.6%) were morphologically and biochemically identified as Lactobacillus, Pediococcus, and Lactococcus species. The results demonstrated two promising antihyperlipidemic candidates, a Lactococcus lactis ssp. lactis with an in vivo significant reduction of serum triglycerides (TG) levels by 34.3%, and a Pediococcus sp. that was able to significantly reduce both the serum TC and TG levels by 17.3% and 47.0%, respectively, as compared to the diet-induced hyperlipidemic animal group.
CONCLUSION
This study further supports the growing evidence regarding the antihyperlipidemic activity among probiotics, presenting them as a promising therapeutic approach for the management of hyperlipidemia.
Topics: Animals; Cholesterol; Hyperlipidemias; Hypolipidemic Agents; Lactobacillales; Lactococcus lactis; Pediococcus; Probiotics
PubMed: 35737711
DOI: 10.1371/journal.pone.0269953 -
Molecules (Basel, Switzerland) Dec 2020Linn (African star apple) is a fruit with extensive nutritional and medicinal benefits. The fruit and kernel in the seed are both edible. Strains of lactic acid...
Linn (African star apple) is a fruit with extensive nutritional and medicinal benefits. The fruit and kernel in the seed are both edible. Strains of lactic acid bacteria (LAB) were isolated from fermented seeds and assessed for probiotic characteristics. The extracts in both the unfermented and the fermented aqueous extracts from the kernels obtained from the seeds of were subjected to analysis using the gas chromatography/mass spectrometry (GC-MS) method. This analysis identified the bioactive compounds present as possible substrate(s) for the associated organisms inducing the fermentation and the resultant biotransformed products formed. Three potential probiotic LAB strains identified as (ProbtA1) (ProbtA2a) and (ProbtA2b) were isolated from the fermented seeds. All strains were non hemolytic, which indicated their safety, Probt (A1, A2a, and A2b) grew in an acidic environment (pH 3.5) during the 48-h incubation time, and all three strains grew in 1% bile, and exhibited good hydrophobicity and auto-aggregation properties. Mucin binding proteins was not detected in any strain, and bile salt hydrolase was detected in all the strains. l-lactic acid (28.57%), norharman (5.07%), formyl 7-hexadecenoate (1.73%), and indole (1.51%) were the four major constituents of the fermented kernel of the , while 2,5-dimethylpyrazine (C1, 1.27%), 3,5-dihydroxy-6-methyl-2,3-dihydropyran-4-one (C2, 2.90%), indole (C3, 1.31%), norharman (C4, 3.01%), and methyl petroselinate (C5, 4.33%) were the five major constituents of the unfermented kernels. The isolated LAB are safe for consumption. The fermenting process metabolized C1, C2, and C5, which are possible starter cultures for the growth of probiotics. Fermentation is an essential tool for bioengineering molecules in foods into safe and health beneficial products.
Topics: Biotransformation; Fermentation; Food Microbiology; Fruit; Lactococcus; Lactococcus lactis; Pediococcus pentosaceus; Probiotics; Sapotaceae; Seeds
PubMed: 33352625
DOI: 10.3390/molecules25246021 -
Aquaculture Nutrition 2023The aim of this study was to investigate the synbiotic effects of (PA) and isomaltooligosaccharide (IMO) on the performance of juvenile common carp (). A total of 360...
The aim of this study was to investigate the synbiotic effects of (PA) and isomaltooligosaccharide (IMO) on the performance of juvenile common carp (). A total of 360 fish (17.22 ± 0.19 g) were randomly divided into six groups with three replicates of 20 fish each. The trial continued for 8 weeks. The control group was fed only basal diet; PA was fed basal diet supplemented with 1 g/kg (10 CFU/kg) PA, IMO5 (5 g/kg IMO), IMO10 (10 g/kg IMO), PA-IMO5 (1 g/kg PA and 5 g/kg IMO), and PA-IMO10 (1 g/kg PA and 10 g/kg IMO). The results indicated that the diet containing 1 g/kg PA and 5 g/kg IMO significantly increased the fish growth performance and decreased the feed conversion ratio ( < 0.05). Overall, blood biochemical parameters, serum (lysozyme, complements C3 and C4) and mucosal (protein, total immunoglobulin, and lysozyme) immune responses, and antioxidant defense of fish also improved in the PA-IMO5 group ( < 0.05). Therefore, a combination of 1 g/kg (10 CFU/kg) PA and 5 g/kg IMO can be recommended as a beneficial synbiotic additive and immunostimulant in juvenile common carp.
PubMed: 36860979
DOI: 10.1155/2023/1808640 -
Food Science of Animal Resources Jul 2023Lactic acid bacteria (LAB) are commonly used as probiotics; however, not all LAB strains have the same beneficial effects. To successfully use LAB as probiotics in...
Lactic acid bacteria (LAB) are commonly used as probiotics; however, not all LAB strains have the same beneficial effects. To successfully use LAB as probiotics in canines, LAB species should originate from the canine intestinal tract as they display host specificity. The objective of this study was to investigate the phenotypic and genomic traits of potential probiotic LAB isolated from canine fecal samples. Twenty LAB samples were evaluated for their potential probiotic characteristics including resistance to low pH, bile salts, hydrophobicity, auto-aggregation, co-aggregation, adhesion to epithelia or mucosa, and production of inhibitory compounds. Additionally, we evaluated their safety and other beneficial effects on canine health, such as DPPH free radical scavenging, and β-galactosidase. Four strains demonstrated potential probiotic characteristics and were selected: Pom4, Pom5, Chi8, and FB2. Safety evaluations showed that all strains lacked hemolytic activity, could not produce biogenic amines, and did not carry any pathogenic genes. In addition, Pom5 and Chi8 displayed susceptibility to all antibiotics and concordant with the absence of antibiotic resistance genes. Based on their phenotypic and genomic characteristics, Pom5 and Chi8 were identified as potential probiotic candidates for canines.
PubMed: 37484003
DOI: 10.5851/kosfa.2023.e28 -
EFSA Journal. European Food Safety... Aug 2022Following a request from the European Commission, the Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) was asked to deliver a scientific...
Following a request from the European Commission, the Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) was asked to deliver a scientific opinion on the safety and efficacy of CNCM I-4622 when used as a technological additive (acidity regulator and hygiene condition enhancers) for all animal species. The product is intended for use in mash compound feeds and/or solid feed materials used for the preparation of liquid feeds at a minimum inclusion level of 1 × 10 CFU kg feed. The bacterial species is considered by EFSA to be eligible for the qualified presumption of safety (QPS) approach. As the identity of the strain has been clearly established and it did not show acquired resistance to antibiotics of human and veterinary importance, the use of this strain in animal nutrition is considered safe for the target species, consumers and the environment. The additive is considered to be a respiratory sensitiser but is not irritant to eyes/skin or a skin sensitiser. CNCM I-4622 at 1 × 10 CFU/kg complete feed showed the potential to reduce the pH and the growth of coliforms in liquid feeds. CNCM I-4622 is compatible with halofuginone, diclazuril, decoquinate and nicarbazin at the highest authorised levels for chickens for fattening.
PubMed: 35978622
DOI: 10.2903/j.efsa.2022.7424 -
Scientific Reports Jul 2022This research aimed to isolate lactic acid bacteria from the bowel of saltwater fish to assess their potential probiotic properties. Nineteen isolates of LAB including...
This research aimed to isolate lactic acid bacteria from the bowel of saltwater fish to assess their potential probiotic properties. Nineteen isolates of LAB including Lactiplantibacillus plantarum, Lactiplantibacillus pentosus, Lactobacillus acidophilus, Levilactobacillus brevis, Pediococcus pentosaceus, and Pediococcus acidilactici were recognized using molecular tools. All the isolates survived in the simulated conditions of the GI tract. Auto-aggregation ranged from 01.3 ± 0.5 to 82.6 ± 1.4% and hydrophobicity with toluene ranged from 3.7 ± 1.6 to 69.4 ± 1.3%, while the range of hydrophobicity with xylene was from 02.2 ± 1.6 to 56.4 ± 2.1%. All the isolates of lactobacilli, pediococci, enterococci, and lactococci indicated variable sensitivity and resistance towards clinical antibiotics. Non-neutralized cell free supernatant of isolates F12 and F15 showed antimicrobial activity against all the 8 evaluated enteric pathogens. Cluster analysis of identified potential probiotic bacteria based on heat-map and PCA methods also highlighted the priority of isolates F3, F7, F12, and F15 as bio-control agents in fishery industry. The findings of this study may essentially contribute to the understanding of the probiotic potential of LAB in saltwater fish, in order to access their probiotic characterization for use as biocontrol in fishery.
Topics: Algorithms; Animals; Cluster Analysis; Lactobacillales; Lactobacillus; Probiotics
PubMed: 35831426
DOI: 10.1038/s41598-022-16322-z -
EFSA Journal. European Food Safety... Oct 2023Following a request from the European Commission, the EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) was asked to deliver a scientific...
Safety and efficacy of a feed additive consisting of DSM 33761, DSM 33758, DSM 16284, DSM 33751 and DSM 16351 (Biomin® C5) for chickens for fattening, chickens reared for laying, turkeys for fattening, turkeys reared for breeding and minor poultry species for fattening and reared for...
Following a request from the European Commission, the EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) was asked to deliver a scientific opinion on the safety and efficacy of a feed additive consisting of viable cells of DSM 33761, DSM 33758, DSM 16284, DSM 33751 and DSM 16351 (Biomin® C5) as a zootechnical additive (functional group: gut flora stabiliser) for chickens for fattening, chickens reared for laying, turkeys for fattening, turkeys reared for breeding and minor poultry species for fattening and reared for laying/breeding. Biomin® C5 is marketed in two formulations: a coated and a non-coated formulation with a total minimum microbial count of 1 × 10 and 4 × 10 colony forming unit (CFU)/g product, respectively. The Panel considered that the use of Biomin® C5 in feed at the proposed conditions of use raises no risk for the target species, consumers and the environment. Both coated and non-coated formulations of Biomin® C5 are considered respiratory and skin sensitisers, but not skin irritants. The FEEDAP Panel was not in the position to conclude on the eye irritation potential of any formulation. Due to lack of sufficient data, the FEEDAP Panel could not conclude on the efficacy of the additive in the target species at the proposed conditions of use. Biomin® C5 is compatible with nicarbazin, diclazuril, decoquinate and halofuginone. No conclusions can be drawn on the compatibility of Biomin® C5 with monensin sodium, robenidine hydrochloride, maduramicin ammonium and lasalocid A sodium.
PubMed: 37869252
DOI: 10.2903/j.efsa.2023.8354 -
Frontiers in Plant Science 2023Anti-nutritional factors (ANFs) substances in plant products, such as indigestible non-starchy polysaccharides (α-galactooligosaccharides, α-GOS), phytate, tannins,...
Anti-nutritional factors (ANFs) substances in plant products, such as indigestible non-starchy polysaccharides (α-galactooligosaccharides, α-GOS), phytate, tannins, and alkaloids can impede the absorption of many critical nutrients and cause major physiological disorders. To enhance silage quality and its tolerance threshold for humans as well as other animals, ANFs must be reduced. This study aims to identify and compare the bacterial species/strains that are potential use for industrial fermentation and ANFs reduction. A pan-genome study of 351 bacterial genomes was performed, and binary data was processed to quantify the number of genes involved in the removal of ANFs. Among four pan-genomes analysis, all 37 tested genomes had one phytate degradation gene, while 91 out of 150 Enterobacteriacae genomes harbor at least one genes (maximum three). Although, no gene encoding phytase detected in genomes of and species, they have genes involving indirectly in metabolism of phytate-derivatives to produce Myo-inositol, an important compound in animal cells physiology. In contrast, genes related to production of lectin, tannase and saponin degrading enzyme did not include in genomes of and species. Our findings suggest a combination of bacterial species and/or unique strains in fermentation, for examples, two Lactobacillus strains (DSM 21115 and ATCC 14869) with SRCM103689, would maximize the efficiency in reducing the ANFs concentration. In conclusion, this study provides insights into bacterial genomes analysis for maximizing nutritional value in plant-based food. Further investigations of gene numbers and repertories correlated to metabolism of different ANFs will help clarifying the efficiency of time consuming and food qualities.
PubMed: 37180381
DOI: 10.3389/fpls.2023.1145041 -
PloS One 2018The present study was aimed to develop an effective probiotic lactic acid bacteria (LAB) from piglet feces and in vitro characterization of probiotic properties. To...
The present study was aimed to develop an effective probiotic lactic acid bacteria (LAB) from piglet feces and in vitro characterization of probiotic properties. To confirm host-species specificity of probiotics, the efficacy of isolated LAB on growth, nutrient utilization, health and antioxidant status was observed in early weaned piglets. A total of 30 LAB were isolated from feces of five healthy piglets (28d old). All isolates were Gram positive, cocco-bacilli and catalase negative. Out of thirty LAB isolates, twenty were shortlisted on the basis of their tolerance to pH (3.0, 4.0, 7.0 and 8.0) and bile salts (0.075, 0.15, 0.3 and 1.0%). Whereas, fourteen isolates were selected for further in vitro probiotic characterization due higher (P<0.05) cell surface hydrophobicity to toluene (>45 percent). These isolates fermented twenty-seven different carbohydrates but were negative for ONPG, citrate and malonate. Also enabled to synthesize amylase, protease, lipase and phytase. They were sensitive to penicillin, azithromycin, lincomycin, clindamycin, erythromycin, cephalothin and chloramphenicol and resistant to ciprofloxacin, ofloxacin, gatifloxacin, vancomycin and co-trimoxazole. Except three isolates, all showed antagonistic activity (>60% co-culture activity) against Escherichia coli, Salmonella Enteritidis, Salmonella serotype (ser.) Typhimurium, Staphylococcus intermedius, Staph. chromogenes, Proteus mirabillis, Areomonas veonii, Bordetella bronchioseptica and Klebsialla oxytoca. The isolate Lacp28 exhibited highest tolerance to acidic pH and bile salts (up to 0.3%), phytase activity, cell surface hydrophobicity, antagonistic activity and co-culture assay (>80% growth inhibition). Host specificity of Lacp28 was further confirmed by heavy in vitro adhesion to pig intestinal epithelium cells compared to chicken. Hence, Lacp28 was selected and identified by phylogenetic analysis of 16S rRNA as Pediococcus acidilactici strain FT28 with 100% similarity (GenBank accession nos. KU837245, KU837246 and KU837247). The Pediococcus acidilactici FT28 was selected as potential probiotic candidature for in vivo efficacy in weaned pigs. Thirty-six crossbred piglets (28d) were randomly distributed into three groups (four replicates of three each) namely, basal diet without probiotics (T0) or with Lactobacillus acidophilus NCDC15 (conventional dairy-specific probiotic; T1) or Pediococcus acidilactici FT28 (swine-specific probiotic; T2). At end of the experiment, six piglets of similar body weight were selected to conduct digestion trial for estimation of nutrient digestibility. Results of the study indicated that supplementation of both probiotics improved (P<0.001) FCR compared to control without significant effect in average daily gain and DM intake. However, the apparent digestibility of crude protein and ether extract was better (P<0.01) in pigs fed P. acidilactici FT28 compared control and L. acidophilus fed groups. The total WBC and RBC count, serum glucose, total protein, albumin and globulin concentration was higher (P<0.05) in P. acidilactici FT28 fed group with better (P<0.05) catalase and superoxide dismutase activity measured in erythrocyte. It is concluded that species-specific Pediococcus acidilactici FT28 isolated with potential in vitro probiotic properties and also hold probiotic candidature by showing the potential capabilities with higher nutrient digestibility, heamato-biochemical and antioxidant status compared to control and Lactobacillus acidophilus NCDC15.
Topics: Animal Nutritional Physiological Phenomena; Animals; Anti-Bacterial Agents; Antioxidants; Body Weight; Diet; Digestion; Feces; Lactobacillales; Microbial Sensitivity Tests; Phylogeny; Probiotics; RNA, Ribosomal, 16S; Species Specificity; Swine; Weaning
PubMed: 29518093
DOI: 10.1371/journal.pone.0192978