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Hao H, Nie Z, Wu Y, Liu Z, Luo F, Deng F, Zhao L. Probiotic Characteristics and Anti-Inflammatory Effects of Limosilactobacillus fermentum 664 Isolated from Chinese Fermented Pickles. Antioxidants (Basel) 2024; 13:703. [PMID: 38929142 PMCID: PMC11200572 DOI: 10.3390/antiox13060703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2024] [Revised: 06/02/2024] [Accepted: 06/05/2024] [Indexed: 06/28/2024] Open
Abstract
Limosilactobacillus fermentum (L. fermentum) is widely used in industrial food fermentations, and its probiotic and health-promoting roles attracted much attention in the past decades. In this work, the probiotic potential of L. fermentum 664 isolated from Chinese fermented pickles was assessed. In addition, the anti-inflammatory properties and mechanisms were investigated using lipopolysaccharide (LPS)-stimulated RAW264.7 cells. Results indicated that L. fermentum 664 demonstrated excellent acid and bile salt tolerance, adhesion capability, antimicrobial activity, and safety profile. L. fermentum 664 downregulated the release of inflammatory mediators, including tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), interleukin-1β (IL-1β), and cyclooxygenase-2 (COX-2) stimulated with LPS. Moreover, L fermentum 664 inhibited the nuclear translocation of the nuclear factor κB (NF-κB) and the activation of mitogen-activated protein kinases (MAPKs) induced by LPS. This action was associated with a reduction in reactive oxygen species (ROS) levels and an enhanced expression of heme oxygenase-1 (HO-1) protein. Additionally, whole genome sequencing indicated that L. fermentum 664 contained genes that encode proteins with antioxidant and anti-inflammatory functions, including Cytochrome bd ubiquinol oxidase subunit I (CydA), Cytochrome bd ubiquinol oxidase subunit II (CydB), and NAD(P)H dehydrogenase quinone 1 (NQO1). In conclusion, our study suggested that L. fermentum 664 has the potential to become a probiotic and might be a promising strategy for the prevention of inflammation.
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Affiliation(s)
| | | | | | | | | | - Fangming Deng
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China; (H.H.); (Z.N.); (Y.W.)
| | - Lingyan Zhao
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China; (H.H.); (Z.N.); (Y.W.)
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Ludfiani DD, Asmara W, Arianti FD. Enzyme characterization of lactic acid bacteria isolated from duck excreta. Vet World 2024; 17:143-149. [PMID: 38406367 PMCID: PMC10884574 DOI: 10.14202/vetworld.2024.143-149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 12/19/2023] [Indexed: 02/27/2024] Open
Abstract
Background and Aim The production of lignocellulosic biomass waste in the agricultural sector of Indonesia is quite high annually. Utilization of lignocellulosic biomass waste through fermentation technology can be used as feed and biofuel. Fermentation technology requires the involvement of micro-organisms such as bacteria (lactic acid bacteria or LAB). LABs can be isolated from various sources, such as duck excreta. However, there have not been many reports of LAB from duck excreta. The present study aimed to characterize LAB enzymes isolated from duck excreta and obtain LAB enzymes with superior fermentation properties. Materials and Methods A total of 11 LAB cultures obtained from duck excreta in Yogyakarta, Indonesia, were tested. Enzyme characterization of each LAB was performed using the API ZYM kit (BioMérieux, Marcy-I'Etoile, France). The bacterial cell suspension was dropped onto the API ZYM™ cupule using a pipette and incubated for 4 h at 37°C. After incubation, ZYM A and ZYM B were dripped onto the API ZYM cupule, and color changes were observed for approximately 10 s under a strong light source. Results Esterase activity was moderate for all LABs. The activity of α-chymotrypsin, β-glucuronidase, α-fucosidase, and α-mannosidase was not observed in a total of 10 LAB. The phosphohydrolase and amino peptidase enzyme activity of seven LABs was strong. Only six LAB samples showed protease activity. The glycosyl hydrolase (GH) activity was observed in a total of 8 LAB, while the activity of 2 LAB was strong (Lactococcus lactis subsp. lactis K5 and Lactobacillus brevis M4A). Conclusion A total of 2 LABs have superior properties. L. lactis subsp. lactis K5 and L. brevis M4A have a high potential to be used in fermentation. They have the potential for further research, such as their effectiveness in fermentation, lignocellulose hydrolysis, feed additives, molecular characterization to detect specific enzymes, and their specific activities.
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Affiliation(s)
- Dini Dwi Ludfiani
- Research Center for Sustainable Production Systems and Life Cycle Assessment, National Research and Innovation Agency (BRIN), Tangerang Selatan, Indonesia
| | - Widya Asmara
- Department of Microbiology, Faculty of Veterinary Medicine, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Forita Dyah Arianti
- Research Center for Sustainable Production Systems and Life Cycle Assessment, National Research and Innovation Agency (BRIN), Tangerang Selatan, Indonesia
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He Y, Zhu J, Xiao F, Luo Q, Wang P, Wang X, He Y, Xiong Z. Association of Different Total Bilirubin Levels with Prognosis of Peritoneal Dialysis-Associated Peritonitis. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:1837. [PMID: 37893555 PMCID: PMC10607946 DOI: 10.3390/medicina59101837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 09/24/2023] [Accepted: 10/13/2023] [Indexed: 10/29/2023]
Abstract
Background and Objectives: Peritoneal dialysis-associated peritonitis (PDAP) poses significant challenges in peritoneal dialysis (PD) patient management and outcomes. Total bilirubin has gained attention due to its antioxidant and immunomodulatory properties. However, its relationship with PDAP prognosis remains underexplored. Materials and Methods: We conducted a retrospective single-center study involving 243 PDAP patients stratified into tertile-based groups according to total bilirubin levels. The association between total bilirubin levels and treatment failure risk was investigated through statistical analyses and restricted cubic spline curve analysis. Results: Our analysis revealed a non-linear correlation between total bilirubin levels and PDAP treatment failure risk. At total bilirubin levels below 8.24 µmol/L, a protective effect was observed, while levels exceeding this threshold heightened the risk of treatment failure. Conclusions: This study unveils a dual role of total bilirubin in PDAP prognosis. Below a certain threshold, it confers protection, while higher levels exacerbate the risk of treatment failure. These findings emphasize the need for further investigation in larger, multicenter prospective studies to validate and elucidate the mechanisms behind bilirubin's impact on PDAP, potentially guiding the development of targeted therapeutic strategies.
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Affiliation(s)
- Yujian He
- Renal Division, Peking University Shenzhen Hospital, Lianhua Road 1120, Shenzhen 518036, China; (Y.H.); (J.Z.); (F.X.); (Q.L.); (P.W.); (X.W.); (Y.H.)
- PKU-Shenzhen Clinical Institute of Shantou University Medical College, Lianhua Road 1120, Shenzhen 518036, China
| | - Jingjing Zhu
- Renal Division, Peking University Shenzhen Hospital, Lianhua Road 1120, Shenzhen 518036, China; (Y.H.); (J.Z.); (F.X.); (Q.L.); (P.W.); (X.W.); (Y.H.)
- PKU-Shenzhen Clinical Institute of Shenzhen University Medical College, Lianhua Road 1120, Shenzhen 518036, China
| | - Fei Xiao
- Renal Division, Peking University Shenzhen Hospital, Lianhua Road 1120, Shenzhen 518036, China; (Y.H.); (J.Z.); (F.X.); (Q.L.); (P.W.); (X.W.); (Y.H.)
- PKU-Shenzhen Clinical Institute of Shantou University Medical College, Lianhua Road 1120, Shenzhen 518036, China
| | - Qingyun Luo
- Renal Division, Peking University Shenzhen Hospital, Lianhua Road 1120, Shenzhen 518036, China; (Y.H.); (J.Z.); (F.X.); (Q.L.); (P.W.); (X.W.); (Y.H.)
- PKU-Shenzhen Clinical Institute of Shenzhen University Medical College, Lianhua Road 1120, Shenzhen 518036, China
| | - Pengpeng Wang
- Renal Division, Peking University Shenzhen Hospital, Lianhua Road 1120, Shenzhen 518036, China; (Y.H.); (J.Z.); (F.X.); (Q.L.); (P.W.); (X.W.); (Y.H.)
- PKU-Shenzhen Clinical Institute of Shenzhen University Medical College, Lianhua Road 1120, Shenzhen 518036, China
| | - Xu Wang
- Renal Division, Peking University Shenzhen Hospital, Lianhua Road 1120, Shenzhen 518036, China; (Y.H.); (J.Z.); (F.X.); (Q.L.); (P.W.); (X.W.); (Y.H.)
- PKU-Shenzhen Clinical Institute of Shenzhen University Medical College, Lianhua Road 1120, Shenzhen 518036, China
| | - Yan He
- Renal Division, Peking University Shenzhen Hospital, Lianhua Road 1120, Shenzhen 518036, China; (Y.H.); (J.Z.); (F.X.); (Q.L.); (P.W.); (X.W.); (Y.H.)
| | - Zibo Xiong
- Renal Division, Peking University Shenzhen Hospital, Lianhua Road 1120, Shenzhen 518036, China; (Y.H.); (J.Z.); (F.X.); (Q.L.); (P.W.); (X.W.); (Y.H.)
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Lee K, Jeong JW, Shim JJ, Hong HS, Kim JY, Lee JL. Lactobacillus fermentum HY7302 Improves Dry Eye Symptoms in a Mouse Model of Benzalkonium Chloride-Induced Eye Dysfunction and Human Conjunctiva Epithelial Cells. Int J Mol Sci 2023; 24:10378. [PMID: 37373526 DOI: 10.3390/ijms241210378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 06/12/2023] [Accepted: 06/16/2023] [Indexed: 06/29/2023] Open
Abstract
(1) We investigated the effects of the Lactobacillus fermentum HY7302 (HY7302) in a mouse model of benzalkonium chloride (BAC)-induced dry eye, and the possibility of using HY7302 as a food supplement for preventing dry eye. (2) The ocular surface of Balb/c mice was exposed to 0.2% BAC for 14 days to induce dry eye (n = 8), and the control group was treated with the same amount of saline (n = 8). HY7302 (1 × 109 CFU/kg/day, 14 days, n = 8) was orally administered daily to the mice, and omega-3 (200 mg/kg/day) was used as a positive control. To understand the mechanisms by which HY7302 inhibits BAC-induced dry eye, we performed an in vitro study using a human conjunctival cell line (clone-1-5c-4). (3) The probiotic HY7302 improved the BAC-induced decreases in the corneal fluorescein score and tear break-up time. In addition, the lactic acid bacteria increased tear production and improved the detached epithelium. Moreover, HY7302 lowered the BAC-induced increases in reactive oxygen species production in a conjunctival cell line and regulated the expression of several apoptosis-related factors, including phosphorylated protein kinase B (AKT), B-cell lymphoma protein 2 (Bcl-2), and activated caspase 3. Also, HY7302 alleviated the expression of pro-inflammatory cytokines, such as interleukin-1β (IL-1β), IL-6, and IL-8, and also regulated the matrix metallopeptidase-9 production in the conjunctival cell line. (4) In this study, we showed that L. fermentum HY7302 helps prevent dry eye disease by regulating the expression of pro-inflammatory and apoptotic factors, and could be used as a new functional food composition to prevent dry eye disease.
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Affiliation(s)
- Kippeum Lee
- R & BD Center, hy Co., Ltd., 22, Giheungdanji-ro 24 Beon-gil, Giheung-gu, Yongin-si 17086, Republic of Korea
| | - Ji Woong Jeong
- R & BD Center, hy Co., Ltd., 22, Giheungdanji-ro 24 Beon-gil, Giheung-gu, Yongin-si 17086, Republic of Korea
| | - Jae Jung Shim
- R & BD Center, hy Co., Ltd., 22, Giheungdanji-ro 24 Beon-gil, Giheung-gu, Yongin-si 17086, Republic of Korea
| | - Hyun Sook Hong
- Kyung Hee Institute of Regenerative Medicine (KIRM), Medical Science Research Institute, Kyung Hee University Medical Center, Seoul 02447, Republic of Korea
| | - Joo Yun Kim
- R & BD Center, hy Co., Ltd., 22, Giheungdanji-ro 24 Beon-gil, Giheung-gu, Yongin-si 17086, Republic of Korea
| | - Jung Lyoul Lee
- R & BD Center, hy Co., Ltd., 22, Giheungdanji-ro 24 Beon-gil, Giheung-gu, Yongin-si 17086, Republic of Korea
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Bioprospecting for Novel Probiotic Strains from Human Milk and Infants: Molecular, Biochemical, and Ultrastructural Evidence. BIOLOGY 2022; 11:biology11101405. [PMID: 36290309 PMCID: PMC9598434 DOI: 10.3390/biology11101405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 08/07/2022] [Accepted: 08/29/2022] [Indexed: 11/17/2022]
Abstract
Simple Summary Demographic, genetic factors, and maternal lifestyle could modify and alter the microbial diversity of human milk and infants’ gut. We screened human breast milk and infant stool samples from Egyptian sources for possible novel probiotic strains. Forty-one isolates were submitted to the gene bank database, classified, and identified through physiological and biochemical tests. All samples revealed antibiotic resistance, antibacterial activity, and high probiotic features. Six of the isolates revealed less than 95% Average Nucleotide Identity with deposited sequences in the database. Isolate Lactobacillus delbrueckii ASO 100 exhibited the lowest identity ratio with promising probiotic and antibacterial features, enlightening the high probability of being a new probiotic species. Abstract Human milk comprises a diverse array of microbial communities with health-promoting effects, including colonization and development of the infant’s gut. In this study, we characterized the bacterial communities in the Egyptian mother–infant pairs during the first year of life under normal breastfeeding conditions. Out of one hundred isolates, forty-one were chosen for their potential probiotic properties. The selected isolates were profiled in terms of morphological and biochemical properties. The taxonomic evidence of these isolates was investigated based on 16S rRNA gene sequence and phylogenetic trees between the isolates’ sequence and the nearest sequences in the database. The taxonomic and biochemical evidence displayed that the isolates were encompassed in three genera: Lactobacillus, Enterococcus, and Lactococcus. The Lactobacillus was the most common genus in human milk and feces samples with a high incidence of its different species (Lacticaseibacillus paracasei, Lactobacillus delbrueckii, Lactiplantibacillus plantarum, Lactobacillus gasseri, and Lacticaseibacillus casei). Interestingly, BlastN and Jalview alignment results evidenced a low identity ratio of six isolates (less than 95%) with database sequences. This divergence was supported by the unique physiological, biochemical, and probiotic features of these isolates. The isolate L. delbrueckii, ASO 100 exhibited the lowest identity ratio with brilliant probiotic and antibacterial features suggesting the high probability of being a new species. Nine isolates were chosen and subjected to probiotic tests and ultrastructural analysis; these isolates exhibited antibiotic resistance and antibacterial activity with high probiotic characteristics, and high potentiality to be used as prophylactic and therapeutic agents in controlling intestinal pathogens.
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