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Li J, Kudereti T, Wusiman A, Abula S, He X, Li J, Yang Y, Guo Q, Guo Q. Regulatory Effects of Alhagi Honey Small-Molecule Sugars on Growth Performance and Intestinal Microbiota of Lambs. Animals (Basel) 2024; 14:2402. [PMID: 39199936 PMCID: PMC11350646 DOI: 10.3390/ani14162402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2024] [Revised: 08/04/2024] [Accepted: 08/12/2024] [Indexed: 09/01/2024] Open
Abstract
The present study was designed to assess the impact of Alhagi honey small-molecule sugars (AHAS) on Hu lambs. Therefore, in this study, AHAS low-dose (AHAS-L, 200 mg/ kg per day), AHAS medium-dose (AHAS-M, 400 mg/kg per day), and AHAS high-dose (AHAS-H, 800 mg/kg per day) were administered to Hu lambs to investigate the regulatory effects of AHAS on growth performance, oxidation index, immune system enhancement, and intestinal microbiota. The results showed that lambs in the AHAS-H group exhibited significantly increased in average daily weight gain, and growth performance compared to those in the control group (p < 0.05). Moreover, AHAS-H supplementation resulted in increased levels of serum antioxidant enzymes (SOD, GSH-Px, and T-AOC), serum antibodies (IgA, IgG, and IgM), and cytokines (IL-4, 10,17, IFN-γ, and TNF-α) compared with the control group (p < 0.05). Additionally, it increased the quantity and richness of beneficial bacteria at such as Sphingomonas, Ralstonia, and Flavobacterium, activating various metabolic pathways and promoting the production of various short-chain fatty acids. In summary, our findings highlight the potential of AHAS-H treatment in enhancing intestinal health of lambs by improving intestinal function, immunity, and related metabolic pathways. Consequently, these results suggest that AHAS holds promising potential as a valuable intervention for optimizing growth performance and intestinal health in lambs.
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Affiliation(s)
- Jianlong Li
- College of Veterinary Medicine, Xinjiang Agricultural University, Urumqi 830052, China; (J.L.); (T.K.); (A.W.); (S.A.); (X.H.); (J.L.); (Y.Y.); (Q.G.)
- Xinjiang Key Laboratory of New Drug Study and Creation for Herbivorous Animals, Urumqi 830052, China
| | - Tuerhong Kudereti
- College of Veterinary Medicine, Xinjiang Agricultural University, Urumqi 830052, China; (J.L.); (T.K.); (A.W.); (S.A.); (X.H.); (J.L.); (Y.Y.); (Q.G.)
- Xinjiang Key Laboratory of New Drug Study and Creation for Herbivorous Animals, Urumqi 830052, China
| | - Adelijiang Wusiman
- College of Veterinary Medicine, Xinjiang Agricultural University, Urumqi 830052, China; (J.L.); (T.K.); (A.W.); (S.A.); (X.H.); (J.L.); (Y.Y.); (Q.G.)
- Xinjiang Key Laboratory of New Drug Study and Creation for Herbivorous Animals, Urumqi 830052, China
| | - Saifuding Abula
- College of Veterinary Medicine, Xinjiang Agricultural University, Urumqi 830052, China; (J.L.); (T.K.); (A.W.); (S.A.); (X.H.); (J.L.); (Y.Y.); (Q.G.)
- Xinjiang Key Laboratory of New Drug Study and Creation for Herbivorous Animals, Urumqi 830052, China
| | - Xiaodong He
- College of Veterinary Medicine, Xinjiang Agricultural University, Urumqi 830052, China; (J.L.); (T.K.); (A.W.); (S.A.); (X.H.); (J.L.); (Y.Y.); (Q.G.)
- Xinjiang Key Laboratory of New Drug Study and Creation for Herbivorous Animals, Urumqi 830052, China
| | - Jiaxin Li
- College of Veterinary Medicine, Xinjiang Agricultural University, Urumqi 830052, China; (J.L.); (T.K.); (A.W.); (S.A.); (X.H.); (J.L.); (Y.Y.); (Q.G.)
- Xinjiang Key Laboratory of New Drug Study and Creation for Herbivorous Animals, Urumqi 830052, China
| | - Yang Yang
- College of Veterinary Medicine, Xinjiang Agricultural University, Urumqi 830052, China; (J.L.); (T.K.); (A.W.); (S.A.); (X.H.); (J.L.); (Y.Y.); (Q.G.)
- Xinjiang Key Laboratory of New Drug Study and Creation for Herbivorous Animals, Urumqi 830052, China
| | - Qianru Guo
- College of Veterinary Medicine, Xinjiang Agricultural University, Urumqi 830052, China; (J.L.); (T.K.); (A.W.); (S.A.); (X.H.); (J.L.); (Y.Y.); (Q.G.)
- Xinjiang Key Laboratory of New Drug Study and Creation for Herbivorous Animals, Urumqi 830052, China
| | - Qingyong Guo
- College of Veterinary Medicine, Xinjiang Agricultural University, Urumqi 830052, China; (J.L.); (T.K.); (A.W.); (S.A.); (X.H.); (J.L.); (Y.Y.); (Q.G.)
- Xinjiang Key Laboratory of New Drug Study and Creation for Herbivorous Animals, Urumqi 830052, China
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Wang S, Yin F, Sun W, Li R, Guo Z, Wang Y, Zhang Y, Sun C, Sun D. The causal relationship between gut microbiota and nine infectious diseases: a two-sample Mendelian randomization analysis. Front Immunol 2024; 15:1304973. [PMID: 39050854 PMCID: PMC11266007 DOI: 10.3389/fimmu.2024.1304973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Accepted: 01/18/2024] [Indexed: 07/27/2024] Open
Abstract
Background Evidence from observational studies and clinical trials has associated gut microbiota with infectious diseases. However, the causal relationship between gut microbiota and infectious diseases remains unclear. Methods We identified gut microbiota based on phylum, class, order, family, and genus classifications, and obtained infectious disease datasets from the IEU OpenGWAS database. The two-sample Mendelian Randomization (MR) analysis was then performed to determine whether the gut microbiota were causally associated with different infectious diseases. In addition, we performed reverse MR analysis to test for causality. Results Herein, we characterized causal relationships between genetic predispositions in the gut microbiota and nine infectious diseases. Eight strong associations were found between genetic predisposition in the gut microbiota and infectious diseases. Specifically, the abundance of class Coriobacteriia, order Coriobacteriales, and family Coriobacteriaceae was found to be positively associated with the risk of lower respiratory tract infections (LRTIs). On the other hand, family Acidaminococcaceae, genus Clostridiumsensustricto1, and class Bacilli were positively associated with the risk of endocarditis, cellulitis, and osteomyelitis, respectively. We also discovered that the abundance of class Lentisphaeria and order Victivallales lowered the risk of sepsis. Conclusion Through MR analysis, we found that gut microbiota were causally associated with infectious diseases. This finding offers new insights into the microbe-mediated infection mechanisms for further clinical research.
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Affiliation(s)
- Song Wang
- Department of Pediatric Surgery, Tianjin Medical University, General Hospital, Tianjin, China
| | - Fangxu Yin
- Department of Pediatric Surgery, Tianjin Medical University, General Hospital, Tianjin, China
| | - Wei Sun
- Department of Pediatric Surgery, Tianjin Medical University, General Hospital, Tianjin, China
| | - Rui Li
- Department of Pediatric Surgery, Tianjin Medical University, General Hospital, Tianjin, China
| | - Zheng Guo
- Department of Pediatric Surgery, Tianjin Medical University, General Hospital, Tianjin, China
| | - Yuchao Wang
- Department of Pediatric Surgery, Tianjin Medical University, General Hospital, Tianjin, China
| | - Yiyuan Zhang
- Department of Reproductive Endocrinology, Second Hospital of Shandong University, Jinan, China
| | - Chao Sun
- Department of Orthopedic Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Daqing Sun
- Department of Pediatric Surgery, Tianjin Medical University, General Hospital, Tianjin, China
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Nguyen SD, Verstraeten N, Michiels J. Protocol for assessing single-cell persister recovery kinetics and physiology in Escherichia coli using spectrophotometry. STAR Protoc 2024; 5:102984. [PMID: 38592975 PMCID: PMC11015153 DOI: 10.1016/j.xpro.2024.102984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 01/28/2024] [Accepted: 03/11/2024] [Indexed: 04/11/2024] Open
Abstract
Bacterial persisters constitute a small fraction of cells that transiently display multidrug tolerance, allowing them to survive antibiotic treatment and to establish a new population upon recovery from the persistent state. Here, we present a protocol to quantify post-antibiotic persister recovery kinetics and physiological states at the single-cell level. We describe steps for sample preparation, technical setup, and data acquisition using spectrophotometry. Our assay allows for the elucidation of genes and mechanisms involved in persister survival. For complete details on the use and execution of this protocol, please refer to Wilmaerts et al.1.
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Affiliation(s)
- Sang D Nguyen
- Center for Microbiology, VIB, 3001 Leuven, Belgium; Centre for Microbial and Plant Genetics, KU Leuven, 3001 Leuven, Belgium
| | - Natalie Verstraeten
- Center for Microbiology, VIB, 3001 Leuven, Belgium; Centre for Microbial and Plant Genetics, KU Leuven, 3001 Leuven, Belgium
| | - Jan Michiels
- Center for Microbiology, VIB, 3001 Leuven, Belgium; Centre for Microbial and Plant Genetics, KU Leuven, 3001 Leuven, Belgium.
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Zheng Y, Cai Y, Sun T, Li G, An T. Response mechanisms of resistance in L-form bacteria to different target antibiotics: Implications from oxidative stress to metabolism. ENVIRONMENT INTERNATIONAL 2024; 187:108729. [PMID: 38735077 DOI: 10.1016/j.envint.2024.108729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 04/20/2024] [Accepted: 05/07/2024] [Indexed: 05/14/2024]
Abstract
Due to the specific action on bacterial cell wall, β-lactam antibiotics have gained widespread usage as they exhibit a high degree of specificity in targeting bacteria, but causing minimal toxicity to host cells. Under antibiotic pressure, bacteria may opt to shed their cell walls and transform into L-form state as a means to evade the antibiotic effects. In this study, we explored and identified diverse optimal conditions for both Gram-negative bacteria (E. coli DH5α (CTX)) and Gram-positive bacteria (B. subtilis ATCC6633), which were induced to L-form bacteria using lysozyme (0.5 ppm) and meropenem (64 ppm). Notably, when bacteria transformed into L-form state, both bacterial strains showed varying degrees of increased resistance to antibiotics polymyxin E, meropenem, rifampicin, and tetracycline. E. coli DH5α (CTX) exhibited the most significant enhancement in resistance to tetracycline, with a 128-fold increase, while B. subtilis ATCC6633 showed a 32-fold increase in resistance to tetracycline and polymyxin E. Furthermore, L-form bacteria maintained their normal metabolic activity, combined with enhanced oxidative stress, served as an adaptive strategy promoting the sustained survival of L-form bacteria. This study provided a theoretical basis for comprehending antibiotic resistance mechanisms, developing innovative treatment strategies, and confronting global antibiotic resistance challenges.
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Affiliation(s)
- Yuye Zheng
- Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Key Laboratory of City Cluster Environmental Safety and Green Development (Department of Education), School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Yiwei Cai
- Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Key Laboratory of City Cluster Environmental Safety and Green Development (Department of Education), School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Tong Sun
- Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Key Laboratory of City Cluster Environmental Safety and Green Development (Department of Education), School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Guiying Li
- Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Key Laboratory of City Cluster Environmental Safety and Green Development (Department of Education), School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.
| | - Taicheng An
- Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Key Laboratory of City Cluster Environmental Safety and Green Development (Department of Education), School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
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Manafu Z, Zhang Z, Malajiang X, Abula S, Guo Q, Wu Y, Wusiman A, Bake B. Effects of Alhagi camelorum Fisch polysaccharide from different regions on growth performance and gastrointestinal microbiota of sheep lambs. Front Pharmacol 2024; 15:1379394. [PMID: 38746008 PMCID: PMC11091474 DOI: 10.3389/fphar.2024.1379394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 04/11/2024] [Indexed: 05/16/2024] Open
Abstract
Polysaccharides derived from Alhagi camelorum Fisch possess diverse activities, making them a potential prebiotic candidates for enhancing lamb health. This study investigated the immunomodulatory effects of Alhagi camelorum Fisch polysaccharides from Aksu (AK) and Shanshan (SS) regions on sheep lambs. The results showed that sheep lambs in the SS group exhibited significantly increased (p < 0.05) average daily gain, levels of growth hormone (GH), insulin (INS), IgA and IgM, and cytokines IL-4, IL-10, IL-17, TNF-α and IFN-γ compared to those in the control check (CK) group. Moreover, the SS treatment significantly increased the diversity and abundance of beneficial bacteria, while concurrently diminishing the prevalence of harmful bacteria. Additionally, it modulated various metabolic pathways, promoted lamb growth, improved immunity, reduced the risk of gastrointestinal disease and improved the composition of gastrointestinal microbiota. In summary, our findings highlight the potential of SS treatment in enhancing gastrointestinal health of sheep lambs by improving intestinal function, immunity, and gut microbiome. Consequently, these results suggest that Alhagi camelorum Fisch polysaccharides derived from Shanshan regions holds promising potential as a valuable intervention for optimizing growth performance in sheep lambs.
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Affiliation(s)
- Zulikeyan Manafu
- College of Grassland Science, Xinjiang Agricultural University, Urumqi, China
- Xinjiang Key Laboratory of New Drug Study and Creation for Herbivorous Animal, College of Veterinary Medicine, Xinjiang Agricultural University, Urumqi, China
| | - Zhenping Zhang
- Xinjiang Key Laboratory of New Drug Study and Creation for Herbivorous Animal, College of Veterinary Medicine, Xinjiang Agricultural University, Urumqi, China
| | - Xieraili Malajiang
- College of Grassland Science, Xinjiang Agricultural University, Urumqi, China
| | - Saifuding Abula
- Xinjiang Key Laboratory of New Drug Study and Creation for Herbivorous Animal, College of Veterinary Medicine, Xinjiang Agricultural University, Urumqi, China
| | - Qingyong Guo
- Xinjiang Key Laboratory of New Drug Study and Creation for Herbivorous Animal, College of Veterinary Medicine, Xinjiang Agricultural University, Urumqi, China
| | - Yi Wu
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Adelijaing Wusiman
- Xinjiang Key Laboratory of New Drug Study and Creation for Herbivorous Animal, College of Veterinary Medicine, Xinjiang Agricultural University, Urumqi, China
| | - Batur Bake
- College of Grassland Science, Xinjiang Agricultural University, Urumqi, China
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Stojowska-Swędrzyńska K, Kuczyńska-Wiśnik D, Laskowska E. Influence of N ε-Lysine Acetylation on the Formation of Protein Aggregates and Antibiotic Persistence in E. coli. Molecules 2024; 29:383. [PMID: 38257296 PMCID: PMC10819833 DOI: 10.3390/molecules29020383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/07/2024] [Accepted: 01/10/2024] [Indexed: 01/24/2024] Open
Abstract
Numerous studies indicate that reversible Nε-lysine acetylation in bacteria may play a key role in the regulation of metabolic processes, transcription and translation, biofilm formation, virulence, and drug resistance. Using appropriate mutant strains deficient in non-enzymatic acetylation and enzymatic acetylation or deacetylation pathways, we investigated the influence of protein acetylation on cell viability, protein aggregation, and persister formation in Escherichia coli. Lysine acetylation was found to increase protein aggregation and cell viability under the late stationary phase. Moreover, increased lysine acetylation stimulated the formation of persisters. These results suggest that acetylation-dependent aggregation may improve the survival of bacteria under adverse conditions (such as the late stationary phase) and during antibiotic treatment. Further experiments revealed that acetylation-favorable conditions may increase persister formation in Klebsiella pneumoniae clinical isolate. However, the exact mechanisms underlying the relationship between acetylation and persistence in this pathogen remain to be elucidated.
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Affiliation(s)
| | | | - Ewa Laskowska
- Department of General and Medical Biochemistry, Faculty of Biology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland; (K.S.-S.); (D.K.-W.)
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Kuczyńska-Wiśnik D, Stojowska-Swędrzyńska K, Laskowska E. Liquid-Liquid Phase Separation and Protective Protein Aggregates in Bacteria. Molecules 2023; 28:6582. [PMID: 37764358 PMCID: PMC10534466 DOI: 10.3390/molecules28186582] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/09/2023] [Accepted: 09/09/2023] [Indexed: 09/29/2023] Open
Abstract
Liquid-liquid phase separation (LLPS) and the formation of membraneless organelles (MLOs) contribute to the spatiotemporal organization of various physiological processes in the cell. These phenomena have been studied and characterized mainly in eukaryotic cells. However, increasing evidence indicates that LLPS-driven protein condensation may also occur in prokaryotes. Recent studies indicate that aggregates formed during proteotoxic stresses may also play the role of MLOs and increase the fitness of bacteria under stress. The beneficial effect of aggregates may result from the sequestration and protection of proteins against irreversible inactivation or degradation, activation of the protein quality control system and induction of dormancy. The most common stress that bacteria encounter in the natural environment is water loss. Therefore, in this review, we focus on protein aggregates formed in E. coli upon desiccation-rehydration stress. In silico analyses suggest that various mechanisms and interactions are responsible for their formation, including LLPS, disordered sequences and aggregation-prone regions. These data support findings that intrinsically disordered proteins and LLPS may contribute to desiccation tolerance not only in eukaryotic cells but also in bacteria. LLPS-driven aggregation may be a strategy used by pathogens to survive antibiotic treatment and desiccation stress in the hospital environment.
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Affiliation(s)
| | | | - Ewa Laskowska
- Department of General and Medical Biochemistry, Faculty of Biology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland; (D.K.-W.); (K.S.-S.)
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Bollen C, Louwagie E, Verstraeten N, Michiels J, Ruelens P. Environmental, mechanistic and evolutionary landscape of antibiotic persistence. EMBO Rep 2023; 24:e57309. [PMID: 37395716 PMCID: PMC10398667 DOI: 10.15252/embr.202357309] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 06/07/2023] [Accepted: 06/16/2023] [Indexed: 07/04/2023] Open
Abstract
Recalcitrant infections pose a serious challenge by prolonging antibiotic therapies and contributing to the spread of antibiotic resistance, thereby threatening the successful treatment of bacterial infections. One potential contributing factor in persistent infections is antibiotic persistence, which involves the survival of transiently tolerant subpopulations of bacteria. This review summarizes the current understanding of antibiotic persistence, including its clinical significance and the environmental and evolutionary factors at play. Additionally, we discuss the emerging concept of persister regrowth and potential strategies to combat persister cells. Recent advances highlight the multifaceted nature of persistence, which is controlled by deterministic and stochastic elements and shaped by genetic and environmental factors. To translate in vitro findings to in vivo settings, it is crucial to include the heterogeneity and complexity of bacterial populations in natural environments. As researchers continue to gain a more holistic understanding of this phenomenon and develop effective treatments for persistent bacterial infections, the study of antibiotic persistence is likely to become increasingly complex.
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Affiliation(s)
- Celien Bollen
- Centre of Microbial and Plant GeneticsKU LeuvenLeuvenBelgium
- Center for Microbiology, VIBLeuvenBelgium
| | - Elen Louwagie
- Centre of Microbial and Plant GeneticsKU LeuvenLeuvenBelgium
- Center for Microbiology, VIBLeuvenBelgium
| | - Natalie Verstraeten
- Centre of Microbial and Plant GeneticsKU LeuvenLeuvenBelgium
- Center for Microbiology, VIBLeuvenBelgium
| | - Jan Michiels
- Centre of Microbial and Plant GeneticsKU LeuvenLeuvenBelgium
- Center for Microbiology, VIBLeuvenBelgium
| | - Philip Ruelens
- Centre of Microbial and Plant GeneticsKU LeuvenLeuvenBelgium
- Center for Microbiology, VIBLeuvenBelgium
- Laboratory of Socioecology and Social EvolutionKU LeuvenLeuvenBelgium
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