1
|
De Simone C. The authenticity of probiotic foods and dietary supplements: facts and reflections from a court case. CYTA - JOURNAL OF FOOD 2022. [DOI: 10.1080/19476337.2022.2141344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Claudio De Simone
- Infectious Diseases, University of L’Aquila (Italy), L’Aquila, Italy
| |
Collapse
|
2
|
Kang SJ, Yang J, Lee NY, Lee CH, Park IB, Park SW, Lee HJ, Park HW, Yun HS, Chun T. Monitoring Cellular Immune Responses after Consumption of Selected
Probiotics in Immunocompromised Mice. Food Sci Anim Resour 2022; 42:903-914. [PMID: 36133633 PMCID: PMC9478974 DOI: 10.5851/kosfa.2022.e44] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 08/02/2022] [Accepted: 08/11/2022] [Indexed: 11/25/2022] Open
Abstract
Probiotics are currently considered as one of tools to modulate immune responses
under specific clinical conditions. The purpose of this study was to evaluate
whether oral administration of three different probiotics
(Lactiplantibacillus plantarum CJLP243, CJW55-10, and
CJLP475) could evoke a cell-mediated immunity in immunodeficient mice. Before
conducting in vivo experiments, we examined the in
vitro potency of these probiotics for macrophage activation. After
co-culture with these probiotics, bone marrow derived macrophages (BMDMs)
produced significant amounts of proinflammatory cytokines including
interleukin-6 (IL-6), IL-12, and tumor necrosis factor-α (TNF-α).
Levels of inducible nitric oxide synthase (inos) and
co-stimulatory molecules (CD80 and CD86) were also upregulated in BMDMs after
treatment with some of these probiotics. To establish an immunocompromised
animal model, we intraperitoneally injected mice with cyclophosphamide on day 0
and again on day 2. Starting day 3, we orally administered probiotics every day
for the last 15 d. After sacrificing experimental mice on day 18, splenocytes
were isolated and co-cultured with these probiotics for 3 d to measure levels of
several cytokines and immune cell proliferation. Results clearly indicated that
the consumption of all three probiotic strains promoted secretion of
interferon-γ (IFN-γ), IL-1β, IL-6, IL-12, and TNF-α.
NK cell cytotoxicity and proliferation of immune cells were also increased.
Taken together, our data strongly suggest that consumption of some probiotics
might induce cell-mediated immune responses in immunocompromised mice.
Collapse
Affiliation(s)
- Seok-Jin Kang
- Department of Biotechnology, College of
Life Sciences and Biotechnology, Korea University, Seoul
02841, Korea
- Institute of Animal Molecular
Biotechnology, Korea University, Seoul 02841, Korea
| | - Jun Yang
- Department of Biotechnology, College of
Life Sciences and Biotechnology, Korea University, Seoul
02841, Korea
| | - Na-Young Lee
- Department of Biotechnology, College of
Life Sciences and Biotechnology, Korea University, Seoul
02841, Korea
| | - Chang-Hee Lee
- Department of Biotechnology, College of
Life Sciences and Biotechnology, Korea University, Seoul
02841, Korea
- Institute of Animal Molecular
Biotechnology, Korea University, Seoul 02841, Korea
| | - In-Byung Park
- Department of Biotechnology, College of
Life Sciences and Biotechnology, Korea University, Seoul
02841, Korea
- Institute of Animal Molecular
Biotechnology, Korea University, Seoul 02841, Korea
| | - Si-Won Park
- Department of Biotechnology, College of
Life Sciences and Biotechnology, Korea University, Seoul
02841, Korea
| | - Hyeon Jeong Lee
- Department of Biotechnology, College of
Life Sciences and Biotechnology, Korea University, Seoul
02841, Korea
| | - Hae-Won Park
- Department of Biotechnology, College of
Life Sciences and Biotechnology, Korea University, Seoul
02841, Korea
| | | | - Taehoon Chun
- Department of Biotechnology, College of
Life Sciences and Biotechnology, Korea University, Seoul
02841, Korea
- Corresponding author: Taehoon
Chun, Department of Biotechnology, College of Life Sciences and Biotechnology,
Korea University, Seoul 02841, Korea, Tel: +82-2-3290-3069, E-mail:
| |
Collapse
|
3
|
Ileal Pouch–Anal Anastomosis and Pouchitis: The Role of the Microbiota in the Pathogenesis and Therapy. Nutrients 2022; 14:nu14132610. [PMID: 35807791 PMCID: PMC9268595 DOI: 10.3390/nu14132610] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/15/2022] [Accepted: 06/22/2022] [Indexed: 11/20/2022] Open
Abstract
Inflammatory bowel diseases, Crohn’s disease and ulcerative colitis, are life-long disorders characterized by the chronic relapsing inflammation of the gastrointestinal tract with the intermittent need for escalation treatment and, eventually, even surgery. The total proctocolectomy with ileal pouch–anal anastomosis (IPAA) is the surgical intervention of choice in subjects affected by ulcerative colitis (UC). Although IPAA provides satisfactory functional outcomes, it can be susceptible to some complications, including pouchitis as the most common. Furthermore, 10–20% of the pouchitis may develop into chronic pouchitis. The etiology of pouchitis is mostly unclear. However, the efficacy of antibiotics in pouchitis suggests that the dysbiosis of the IPAA microbiota plays an important role in its pathogenesis. We aimed to review the role of the microbiota in the pathogenesis and as a target therapy in subjects who develop pouchitis after undergoing the surgical intervention of total proctocolectomy with IPAA reconstruction.
Collapse
|
4
|
Sarkar A, Harty S, Moeller AH, Klein SL, Erdman SE, Friston KJ, Carmody RN. The gut microbiome as a biomarker of differential susceptibility to SARS-CoV-2. Trends Mol Med 2021; 27:1115-1134. [PMID: 34756546 PMCID: PMC8492747 DOI: 10.1016/j.molmed.2021.09.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 09/28/2021] [Accepted: 09/29/2021] [Indexed: 02/07/2023]
Abstract
Coronavirus disease 2019 (COVID-19) continues to exact a devastating global toll. Ascertaining the factors underlying differential susceptibility and prognosis following viral exposure is critical to improving public health responses. We propose that gut microbes may contribute to variation in COVID-19 outcomes. We synthesise evidence for gut microbial contributions to immunity and inflammation, and associations with demographic factors affecting disease severity. We suggest mechanisms potentially underlying microbially mediated differential susceptibility to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). These include gut microbiome-mediated priming of host inflammatory responses and regulation of endocrine signalling, with consequences for the cellular features exploited by SARS-CoV-2 virions. We argue that considering gut microbiome-mediated mechanisms may offer a lens for appreciating differential susceptibility to SARS-CoV-2, potentially contributing to clinical and epidemiological approaches to understanding and managing COVID-19.
Collapse
Affiliation(s)
- Amar Sarkar
- Department of Human Evolutionary Biology, Harvard University, Cambridge, MA, USA.
| | - Siobhán Harty
- Tandy Court, Spitalfields, Dublin 8, D08 RP20, Ireland
| | - Andrew H Moeller
- Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY, USA
| | - Sabra L Klein
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Susan E Erdman
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Karl J Friston
- Wellcome Centre for Human Neuroimaging, University College London, London, UK
| | - Rachel N Carmody
- Department of Human Evolutionary Biology, Harvard University, Cambridge, MA, USA.
| |
Collapse
|
5
|
McEvoy L, Carr DF, Pirmohamed M. Pharmacogenomics of NSAID-Induced Upper Gastrointestinal Toxicity. Front Pharmacol 2021; 12:684162. [PMID: 34234675 PMCID: PMC8256335 DOI: 10.3389/fphar.2021.684162] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 05/11/2021] [Indexed: 12/19/2022] Open
Abstract
Non-steroidal anti-inflammatory drugs (NSAIDs) are a group of drugs which are widely used globally for the treatment of pain and inflammation, and in the case of aspirin, for secondary prevention of cardiovascular disease. Chronic non-steroidal anti-inflammatory drug use is associated with potentially serious upper gastrointestinal adverse drug reactions (ADRs) including peptic ulcer disease and gastrointestinal bleeding. A few clinical and genetic predisposing factors have been identified; however, genetic data are contradictory. Further research is needed to identify clinically relevant genetic and non-genetic markers predisposing to NSAID-induced peptic ulceration.
Collapse
Affiliation(s)
- L McEvoy
- Department of Pharmacology and Therapeutics, University of Liverpool, Liverpool, United Kingdom
| | - D F Carr
- Department of Pharmacology and Therapeutics, University of Liverpool, Liverpool, United Kingdom
| | - M Pirmohamed
- Department of Pharmacology and Therapeutics, University of Liverpool, Liverpool, United Kingdom
| |
Collapse
|
6
|
Sunda F, Arowolo A. A molecular basis for the anti-inflammatory and anti-fibrosis properties of cannabidiol. FASEB J 2020; 34:14083-14092. [PMID: 32885502 DOI: 10.1096/fj.202000975r] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 07/25/2020] [Accepted: 08/10/2020] [Indexed: 12/14/2022]
Abstract
Cannabidiol (CBD) is considered a non-psychoactive, antioxidant, and anti-inflammatory compound derived from the Cannabis sativa plant. There are various reports on the versatile function of CBD, including ameliorating chronic inflammation and fibrosis formation in several tissue types. However, only a hand full of studies have proposed or provided a molecular justification for the beneficial properties of this Phyto-compound. This review focused on the anti-inflammation and anti-fibrotic effects of CBD based on modulating the associated chemokines/cytokines and receptor-mediated pathways. We also highlighted the regulatory impact of CBD on reactive oxygen species (ROS) producing-NADPH oxidase (Nox), and ROS scavenging-superoxide dismutase (SOD) enzymes. Although CBD has a low affinity to Cannabinoid receptors 1 and 2 (CB1 and CB2 ), we reported on the activation of these receptors by other CBD analogs, and CBD on non-CBD receptors. CBD downregulates pro-inflammatory and pro-fibrotic chemokines/cytokines by acting as direct or indirect agonists of Adenosine A2A /equilibrative nucleoside transporter receptors, Peroxisome proliferator-activated receptor gamma, and Transient receptor potential vanilloid receptors or channels, and as an antagonist of GPR55 receptors. CBD also caused the reduction and enhancement of the ROS producing, Nox and ROS-scavenging, SOD enzyme activities, respectively. This review thus recommends the continued study of CBD's molecular mechanism in treating established and emerging inflammatory and fibrosis-related diseases.
Collapse
Affiliation(s)
- Falone Sunda
- Hair and Skin Research Laboratory, Division of Medical Biochemistry and Dermatology, University of Cape Town, Cape Town, South Africa.,Department of Medicine, Faculty of Health Sciences and Groote Schuur Hospital, University of Cape Town, Cape Town, South Africa
| | - Afolake Arowolo
- Hair and Skin Research Laboratory, Division of Medical Biochemistry and Dermatology, University of Cape Town, Cape Town, South Africa.,Department of Medicine, Faculty of Health Sciences and Groote Schuur Hospital, University of Cape Town, Cape Town, South Africa
| |
Collapse
|
7
|
Joseph NT, Shankar SR, Narasimhamurthy RK, Rao SBS, Mumbrekar KD. Bi-Directional interactions between microbiota and ionizing radiation in head and neck and pelvic radiotherapy - clinical relevance. Int J Radiat Biol 2020; 96:961-971. [PMID: 32420768 DOI: 10.1080/09553002.2020.1770361] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Purpose: Rapid developments in high throughput screening technology for the detection and identification of the human microbiota have helped in understanding its influence on human health and disease. In the recent past, several seminal studies have demonstrated the influence of microbiota on outcomes of therapy-associated radiation exposure. In this review, we highlight the concepts related to the mechanisms by which radiation alters the microbiota composition linked with radiation-associated toxicity in head and neck and pelvic regions. We further discuss specific microbial changes that can be employed as a biomarker for radiation and tumor response.Conclusion: Knowledge of the influence of microbiota in radiation response and advances in microbiota manipulation techniques would help to design personalized treatment augmenting the efficacy of radiotherapy.
Collapse
Affiliation(s)
- Nidhya Teresa Joseph
- Department of Biotechnology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, India
| | - Saligrama R Shankar
- Department of Radiation Biology & Toxicology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, India
| | - Rekha K Narasimhamurthy
- Department of Radiation Biology & Toxicology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, India
| | - Satish Bola Sadashiva Rao
- Department of Radiation Biology & Toxicology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, India
| | - Kamalesh Dattaram Mumbrekar
- Department of Radiation Biology & Toxicology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, India
| |
Collapse
|
8
|
Rekatsina M, Paladini A, Cifone MG, Lombardi F, Pergolizzi JV, Varrassi G. Influence of Microbiota on NSAID Enteropathy: A Systematic Review of Current Knowledge and the Role of Probiotics. Adv Ther 2020; 37:1933-1945. [PMID: 32291647 PMCID: PMC7467482 DOI: 10.1007/s12325-020-01338-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Indexed: 12/25/2022]
Abstract
Microbiota are increasingly studied, providing more precise information on their important role in physiologic processes. They also influence some pathologic processes, such as NSAID-induced enteropathy. This side effect is much more diffuse than it has been described in the past. It derives mainly from the local action of the medicines and is caused by the local binding of gram-negative bacterial lipopolysaccharides and infiltration of neutrophils into the intestinal mucosa. The initial interest in the interaction between these damages and microbiota is very old, but new and interesting data are available. This review aims to focus on recent studies on NSAID-induced enteropathy, an often-underestimated medical condition, and on the influence of microbiota on this condition. Apart from the broadly investigated use of antibiotics and other mucosal protective solutions, this systematic review focuses mostly on the use of probiotics, which directly influence intestinal microflora. Other important factors influencing NSAID-induced enteropathy, such as sex, advanced age, infection and use of proton pump inhibitors, are also discussed.
Collapse
Affiliation(s)
| | - Antonella Paladini
- Department of Life, Health and Environmental Sciences, University of L'Aquila, Building Delta 6, 67100, L'Aquila, Italy
| | - Maria Grazia Cifone
- Department of Life, Health and Environmental Sciences, University of L'Aquila, Building Delta 6, 67100, L'Aquila, Italy
| | - Francesca Lombardi
- Department of Life, Health and Environmental Sciences, University of L'Aquila, Building Delta 6, 67100, L'Aquila, Italy
| | | | - Giustino Varrassi
- Paolo Procacci Foundation, Via Tacito 7, 00193, Rome, Italy.
- World Institute of Pain, Winston Salem, NC, USA.
| |
Collapse
|
9
|
Mechanistic insights into the action of probiotics against bacterial vaginosis and its mediated preterm birth: An overview. Microb Pathog 2020; 141:104029. [PMID: 32014462 DOI: 10.1016/j.micpath.2020.104029] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 01/29/2020] [Indexed: 02/07/2023]
Abstract
The human body is a reservoir of numerous micro-creatures; whose role is substantial and indispensable in the overall development of human beings. The advances in omic approaches have offered powerful means to decipher the core microbiome and metabolome diversities in a specific organ system. The establishment of lactobacilli in the female reproductive tract is thought to be a paramount prerequisite that maintains homeostatic conditions for a sustainable and healthy pregnancy. Nevertheless, a plethora of such Lactobacillus strains of vaginal source revealed probiotic phenotypes. The plummeting in the occurrence of lactobacilli in the vaginal ecosystem is associated with several adverse pregnancy outcomes (APOs). One such pathological condition is "Bacterial Vaginosis" (BV), a pathogen dominated gynecological threat. In this scenario, the ascending traffic of notorious Gram-negative/variable BV pathogens to the uterus is one of the proposed pathways that give rise to inflammation-related APOs like preterm birth. Since antibiotic resistance is aggravating among urogenital pathogens, the probiotics intervention remains one of the alternative biotherapeutic strategies to overcome BV and its associated APOs. Perhaps, the increased inclination towards the safer and natural biotherapeutic strategies rather than pharmaceutical drugs for maintaining gestational and reproductive health resulted in the use of probiotics in pregnancy diets. In this context, the current review is an attempt to highlight the microbiome and metabolites signatures of BV and non-BV vaginal ecosystem, inflammation or infection-related preterm birth, host-microbial interactions, role and effectiveness of probiotics to fight against aforesaid diseased conditions.
Collapse
|
10
|
Azagra-Boronat I, Tres A, Massot-Cladera M, Franch À, Castell M, Guardiola F, Pérez-Cano FJ, Rodríguez-Lagunas MJ. Lactobacillus fermentum CECT5716 supplementation in rats during pregnancy and lactation affects mammary milk composition. J Dairy Sci 2020; 103:2982-2992. [PMID: 32008776 DOI: 10.3168/jds.2019-17384] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 12/02/2019] [Indexed: 12/11/2022]
Abstract
Lactobacillus fermentum CECT5716 has shown immunomodulatory action and reduction of infections; therefore, it is suggested to be appropriate for use in early life. The present study aimed to assess the effects of the supplementation of L. fermentum CECT5716 in rats during gestation and lactation periods on the composition of some mammary milk components such as microbiota, fatty acid (FA) profile, and immunoglobulins. Wistar rats were supplemented by oral gavage with 1010 cfu/d of Lactobacillus fermentum CECT5716 (n = 6) or vehicle (n = 6) for 5 wk, comprising the 3 wk of gestation and the first 2 wk of lactation. At the end of the intervention, milk, mammary glands, and cecal contents were obtained for the tracking of the probiotic strain by nested PCR-quantitative PCR. Additionally, milk samples were used for the analysis of microbiota by 16S rRNA sequencing, FA by gas chromatography-flame ionization detector, and immunoglobulin by Luminex (Luminex Corporation, Austin, TX). Although L. fermentum CECT5716 administration did not modify the overall composition of milk microbiota, the strain was detected in 50% of the milk samples of rats supplemented with the probiotic. Moreover, probiotic administration induced beneficial changes in the FA composition of milk by increasing total PUFA, including linoleic and α-linolenic acids, and decreasing the proportion of palmitic acid. Finally, the milk of the rats treated with the probiotic showed a 2-fold increase of IgA levels. The supplementation with L. fermentum CECT5716 during pregnancy and lactation periods improved the milk composition of FA and immunoglobulins. These effects were not linked to the presence of the strain in milk, thus suggesting that the mechanism is connected to intestinal compartment. These findings provide novel insight into a potential new approach for infants to benefit from better nutrition, development of a healthy immune system and microbiota, and protection from gastrointestinal infections.
Collapse
Affiliation(s)
- Ignasi Azagra-Boronat
- Physiology Section, Department of Biochemistry and Physiology, Faculty of Pharmacy and Food Science, University of Barcelona, Barcelona 08028, Spain; Nutrition and Food Safety Research Institute, Santa Coloma de Gramenet 08921, Spain
| | - Alba Tres
- Nutrition and Food Safety Research Institute, Santa Coloma de Gramenet 08921, Spain; Department of Nutrition, Food Science and Gastronomy, Torribera Food Science Campus, Faculty of Pharmacy and Food Science, University of Barcelona, Santa Coloma de Gramenet 08921, Spain
| | - Malén Massot-Cladera
- Physiology Section, Department of Biochemistry and Physiology, Faculty of Pharmacy and Food Science, University of Barcelona, Barcelona 08028, Spain; Nutrition and Food Safety Research Institute, Santa Coloma de Gramenet 08921, Spain
| | - Àngels Franch
- Physiology Section, Department of Biochemistry and Physiology, Faculty of Pharmacy and Food Science, University of Barcelona, Barcelona 08028, Spain; Nutrition and Food Safety Research Institute, Santa Coloma de Gramenet 08921, Spain
| | - Margarida Castell
- Physiology Section, Department of Biochemistry and Physiology, Faculty of Pharmacy and Food Science, University of Barcelona, Barcelona 08028, Spain; Nutrition and Food Safety Research Institute, Santa Coloma de Gramenet 08921, Spain
| | - Francesc Guardiola
- Nutrition and Food Safety Research Institute, Santa Coloma de Gramenet 08921, Spain; Department of Nutrition, Food Science and Gastronomy, Torribera Food Science Campus, Faculty of Pharmacy and Food Science, University of Barcelona, Santa Coloma de Gramenet 08921, Spain
| | - Francisco J Pérez-Cano
- Physiology Section, Department of Biochemistry and Physiology, Faculty of Pharmacy and Food Science, University of Barcelona, Barcelona 08028, Spain; Nutrition and Food Safety Research Institute, Santa Coloma de Gramenet 08921, Spain.
| | - M José Rodríguez-Lagunas
- Physiology Section, Department of Biochemistry and Physiology, Faculty of Pharmacy and Food Science, University of Barcelona, Barcelona 08028, Spain; Nutrition and Food Safety Research Institute, Santa Coloma de Gramenet 08921, Spain
| |
Collapse
|
11
|
El-Khadragy MF, Al-Olayan EM, Elmallah MIY, Alharbi AM, Yehia HM, Abdel Moneim AE. Probiotics and yogurt modulate oxidative stress and fibrosis in livers of Schistosoma mansoni-infected mice. Altern Ther Health Med 2019; 19:3. [PMID: 30606163 PMCID: PMC6318950 DOI: 10.1186/s12906-018-2406-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 12/07/2018] [Indexed: 01/05/2023]
Abstract
Background Considerable morbidity, mortality, and economic loss result from schistosomiasis infection. Deposition of Schistosoma eggs in the hepatic portal vein is considered as the main causative agent for the development of liver fibrosis and subsequent liver cirrhosis. Probiotics are exogenous and beneficial microorganisms to living hosts against the harmful effect of many parasites. Strong evidence suggests the importance of probiotics in the control strategy of helminth. The ultimate goal of this study is to evaluate the protective effect of probiotics and yogurt on Schistosoma mansoni-induced oxidative stress and hepatic fibrosis in mice. Methods Mice were infected by tail immersion of schistosomal cercariae followed by an oral treatment with either probiotics or yogurt for one week before infection and immediately post-infection. Mice were scarified on day 56 following infection with S. mansoni and liver sample were obtained. Results We showed that oral administration of probiotics or yogurt revealed a significant reduction in worm number, egg load, and granuloma size in liver tissue, which is mainly assigned to the decreased expression level of matrix metalloproteinases 9 (MMP-9) in liver tissue. A significant reduction in the oxidative stress markers-induced by S. mansoni infection including lipid peroxidation and nitrite/nitrate was also detected. The level of some antioxidant enzymes (superoxide dismutase, catalase, glutathione peroxidase and glutathione reductase) and reduced glutathione was greatly enhanced. Furthermore, treatment with probiotics or yogurt inhibited apoptosis in hepatic tissue, which is mainly assigned to the decreased expression level of caspases-3 in liver tissue. Conclusion Our findings represent the promising anti-schistosomal activities of probiotics and yogurt. Electronic supplementary material The online version of this article (10.1186/s12906-018-2406-3) contains supplementary material, which is available to authorized users.
Collapse
|
12
|
Alves CC, Waitzberg DL, de Andrade LS, Dos Santos Aguiar L, Reis MB, Guanabara CC, Júnior OA, Ribeiro DA, Sala P. Prebiotic and Synbiotic Modifications of Beta Oxidation and Lipogenic Gene Expression after Experimental Hypercholesterolemia in Rat Liver. Front Microbiol 2017; 8:2010. [PMID: 29089934 PMCID: PMC5650986 DOI: 10.3389/fmicb.2017.02010] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 09/29/2017] [Indexed: 01/21/2023] Open
Abstract
Background and aims: Non-alcoholic fatty liver disease (NAFLD) is characterized by the presence of fat in hepatocytes because of decreased β-oxidation and increased lipogenesis. Prebiotics, probiotics, and synbiotic have modulatory effects on intestinal microbiota and may influence the gut-liver axis. Our aim was to evaluate the effects of prebiotic, probiotics, and synbiotic on liver histopathology and gene expression related to β-oxidation and lipogenesis after hypercholesterolemia. Methods: Wistar male adult rats (n = 40) were submitted to hypercholesterolemic conditions (HPC) (60 days). On Day 30 of HPC, rats were subdivided in 5 groups: negative control (NC): without HPC + Gv (distilled water); positive control (PC): with HPC + Gv (distilled water); prebiotic (PRE): HPC + Gv with prebiotic (Fiber FOS®); probiotic (PRO): HPC + Gv with probiotic strains Gv (Probiatop®); and synbiotic (SYN): HPC + Gv with synbiotic (Simbioflora®). All rats were sacrificed on Day 30 post-treatment. Blood was collected to verify total serum cholesterol, and liver tissue was sampled to verify histopathological changes and gene expression. Gene expression related to ß-oxidation (PPAR-α and CPT-1) and lipogenesis (SREBP-1c, FAS and ME) was evaluated in liver tissue using RT-qPCR. Results: PC had higher cholesterol levels when compared to NC. PRE and SYN rats had lower cholesterol levels than PC. PC rats showed more histopathological changes than NC rats; PRE and SYN rats showed fewer alterations than PC rats. PPAR-α was expressed at higher levels in SYN and PC rats compared with PRE and PRO rats. CPT-1 expression was similar in all groups. SREBP-1c was expressed at higher levels in PC rats compared with NC rats; levels were lower in SYN rats compared with PRO rats; levels were lower in PRE rats compared with PC and PRO rats. FAS was expressed at lower levels in PRE rats compared with SYN rats. ME expression was lower in PC rats compared with NC rats. Conclusion: Prebiotic and synbiotic supplementation improve hepatic alterations related to hypercholesterolemia. These changes appear to be mediated by altered expression of genes related to β-oxidation and lipogenesis.
Collapse
Affiliation(s)
- Claudia C Alves
- Department of Biosciences, Federal University of São Paulo, Santos, Brazil
| | - Dan L Waitzberg
- Department of Gastroenterology, School of Medicine, University of São Paulo, São Paulo, Brazil
| | | | | | - Milene B Reis
- Nutrition Graduate, Federal University of São Paulo, Santos, Brazil
| | | | - Odair A Júnior
- Department of Biosciences, Federal University of São Paulo, Santos, Brazil
| | - Daniel A Ribeiro
- Department of Biosciences, Federal University of São Paulo, Santos, Brazil
| | - Priscila Sala
- Department of Gastroenterology, School of Medicine, University of São Paulo, São Paulo, Brazil
| |
Collapse
|
13
|
Ganji-Arjenaki M, Rafieian-Kopaei M. Probiotics are a good choice in remission of inflammatory bowel diseases: A meta analysis and systematic review. J Cell Physiol 2017; 233:2091-2103. [PMID: 28294322 DOI: 10.1002/jcp.25911] [Citation(s) in RCA: 184] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 03/13/2017] [Indexed: 02/06/2023]
Abstract
Altered gut bacteria and bacterial metabolic pathways are two important factors in initiation and progression of inflammatory bowel disease (IBD). However, efficacy of probiotics in remission of patients with IBD has not been characterized. This study was performed on the studies that specifically assessed the efficacy of probiotics in attaining clinical response on patients with various types of IBD. The efficacy of variant species of probiotics in different conditions and the influence of study quality in outcomes of randomized controlled trials (RCTs) were also assessed. The RCTs were collected by searching in MEDLINE Web of Science and Google scholar. Then all studies were abstracted in abstraction form and the outcomes were analyzed with fixed-effect and mixed-effect models for assessment of efficacy of variant species of probiotics in subgroups of IBDs. Analysis of 9 trials showed that probiotics had not significant effect on Crohn's disease (CD) (p = 0.07) but analysis of 3 trials in children with IBD revealed a significant advantage (p < 0.01). Analysis of 18 trials revealed that probiotics in patients with Ulcerative colitis (UC) in different conditions have significant effects (p = 0.007). VSL#3 probiotics in patients with UC had significant effect (p < 0.01). Combination of Lactobacillus probiotic, prebiotics had significant effect (p = 0.03) only in patients with UC. Combination of Saccharomyces boulardii, Lactobacillus, and VSL#3 probiotics in CD had also a trend for efficiency (p = 0.057). In children with IBD, the combination of Lactobacillus with VSL#3 probiotics had significant effect (p < 0.01). Probiotics are beneficial in IBD, especially the combination ones in UC.
Collapse
|
14
|
Metabolik Sendrom Tedavisinde Bağırsak Mikrobiyotasının Probiyotikler ve Özelinde Saccharomyces Boulardii ile Modülasyonu. ANADOLU KLINIĞI TIP BILIMLERI DERGISI 2017. [DOI: 10.21673/anadoluklin.260702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
|
15
|
Esmaeili SA, Mahmoudi M, Momtazi AA, Sahebkar A, Doulabi H, Rastin M. Tolerogenic probiotics: potential immunoregulators in Systemic Lupus Erythematosus. J Cell Physiol 2017; 232:1994-2007. [PMID: 27996081 DOI: 10.1002/jcp.25748] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 12/19/2016] [Indexed: 12/15/2022]
Abstract
Probiotics are commensal or nonpathogenic microbes that colonize the gastrointestinal tract and confer beneficial effects on the host through several mechanisms such as competitive exclusion, anti-bacterial effects, and modulation of immune responses. There is growing evidence supporting the immunomodulatory ability of some probiotics. Several experimental and clinical studies have been shown beneficial effect of some probiotic bacteria, particularly Lactobacillus and Bifidobacteria strains, on inflammatory and autoimmune diseases. Systemic lupus erythematosus (SLE) is an autoimmune disease that is mainly characterized by immune intolerance towards self-antigens. Some immunomodulatory probiotics have been found to regulate immune responses via tolerogenic mechanisms. Dendritic and T regulatory (Treg) cells, IL-6, IFN-γ, IL-17, and IL-23 can be considered as the most determinant dysregulated mediators in tolerogenic status. As demonstrated by documented experimental and clinical trials on inflammatory and autoimmune diseases, a number of probiotic bacterial strains can restore tolerance in host through modification of such dysregulated mediators. Since there are limited reports regarding to impact of probiotic supplementation in SLE patients, the preset review was aimed to suggest a number of probiotics bacteria, mainly from Bifidobacteria and Lactobacillus strains that are able to ameliorate immune responses. The aim was followed through literature survey on immunoregulatory probiotics that can restore tolerance and also modulate the important dysregulated pro/anti-inflammatory cytokines contributing to the pathogenesis of SLE.
Collapse
Affiliation(s)
- Seyed-Alireza Esmaeili
- Immunology Research Center, BuAli Research Institute, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.,Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mahmoud Mahmoudi
- Immunology Research Center, BuAli Research Institute, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amir Abbas Momtazi
- Student Research Committee, Nanotechnology Research Center, Department of Medical Biotechnology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amirhossein Sahebkar
- Biotechnology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hassan Doulabi
- Immunology Research Center, BuAli Research Institute, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.,Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Maryam Rastin
- Immunology Research Center, BuAli Research Institute, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| |
Collapse
|
16
|
Early Transcriptomic Changes in the Ileal Pouch Provide Insight into the Molecular Pathogenesis of Pouchitis and Ulcerative Colitis. Inflamm Bowel Dis 2017; 23:366-378. [PMID: 28221248 PMCID: PMC5988644 DOI: 10.1097/mib.0000000000001027] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
BACKGROUND Ulcerative colitis (UC) only involves the colonic mucosa. Yet, nearly 50% of patients with UC who undergo total proctocolectomy with ileal pouch anal anastomosis develop UC-like inflammation of the ileal pouch (pouchitis). By contrast, patients with familial adenomatous polyposis (FAP) with ileal pouch anal anastomosis develop pouchitis far less frequently. We hypothesized that pathogenic events associated with the development of UC are recapitulated by colonic-metaplastic transcriptomic reprogramming of the UC pouch. METHODS We prospectively sampled pouch and prepouch ileum mucosal biopsies in patients with UC with ileal pouch anal anastomosis 4, 8, and 12 months after their pouch was in continuity. Mucosal samples were also obtained from patients with FAP. Transcriptional profiles of the UC and FAP pouch and prepouch ileum were investigated via RNA sequencing and compared with data from a previously published microarray study. RESULTS Unlike patients with FAP, subjects with UC exhibited a large set of differentially expressed genes between the pouch and prepouch ileum as early as 4 months after pouch functionalization. Functional pathway analysis of differentially expressed genes in the UC pouch revealed an enhanced state of immune/inflammatory response and extracellular matrix remodeling. Moreover, >70% of differentially expressed genes mapped to published inflammatory bowel diseases microarray data sets displayed directional changes consistent with active UC but not with Crohn's disease. CONCLUSIONS The UC pouch, well before histologic inflammation, already displays a systems-level gain of colon-associated genes and loss of ileum-associated genes. Patients with UC exhibit a unique transcriptomic response to ileal pouch creation that can be observed well before disease and may in part explain their susceptibility to the development of pouchitis.
Collapse
|
17
|
Górska S, Sandstrőm C, Wojas-Turek J, Rossowska J, Pajtasz-Piasecka E, Brzozowska E, Gamian A. Structural and immunomodulatory differences among lactobacilli exopolysaccharides isolated from intestines of mice with experimentally induced inflammatory bowel disease. Sci Rep 2016; 6:37613. [PMID: 27869188 PMCID: PMC5116648 DOI: 10.1038/srep37613] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Accepted: 11/01/2016] [Indexed: 01/01/2023] Open
Abstract
Characteristic changes in the microbiota biostructure and a decreased tolerance to intestinal bacteria have been associated with inflammatory bowel disease (IBD). However, few studies have examined the constituents of the intestinal microbiota, including the surface molecules of the bacteria, in healthy and IBD subsets. Here, we compare the chemical structures and immunomodulatory properties of the exopolysaccharides (EPS) of lactobacilli isolated from mice with induced IBD (IBD "+") versus those of healthy mice (IBD "-"). Classical structural analyses were performed using nuclear magnetic resonance spectroscopy and mass spectrometry. Immunomodulatory properties were assessed by stimulation of dendritic cells derived from mouse bone marrow or human peripheral mononuclear blood cells. Our results revealed that EPS produced by IBD "+" species are structurally different from those isolated from IBD "-". Moreover, the structurally different EPS generate different immune responses by dendritic cells. We speculate that resident strains could, upon gut inflammation, switch to producing EPS with specific motifs that are absent from lactobacilli IBD "-", and/or that bacteria with a particular EPS structure might inhabit the inflamed intestinal mucosa. This study may shed light on the role of EPS in IBD and help the development of a specific probiotic therapy for this disease.
Collapse
Affiliation(s)
- Sabina Górska
- L. Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114 Wrocław, Poland
| | - Corine Sandstrőm
- Department of Chemistry and Biotechnology, Swedish University of Agricultural Sciences, P. O. Box 7015, SE-750 07, Uppsala, Sweden
| | - Justyna Wojas-Turek
- L. Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114 Wrocław, Poland
| | - Joanna Rossowska
- L. Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114 Wrocław, Poland
| | - Elżbieta Pajtasz-Piasecka
- L. Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114 Wrocław, Poland
| | - Ewa Brzozowska
- L. Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114 Wrocław, Poland
| | - Andrzej Gamian
- L. Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114 Wrocław, Poland
| |
Collapse
|
18
|
Cinque B, La Torre C, Lombardi F, Palumbo P, Van der Rest M, Cifone MG. Production Conditions Affect the In Vitro Anti-Tumoral Effects of a High Concentration Multi-Strain Probiotic Preparation. PLoS One 2016; 11:e0163216. [PMID: 27657913 PMCID: PMC5033378 DOI: 10.1371/journal.pone.0163216] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Accepted: 09/06/2016] [Indexed: 02/06/2023] Open
Abstract
A careful selection of the probiotic agent, standardization of the dose and detailed characterization of the beneficial effects are essential when considering use of a probiotic for the dietary management of serious diseases. However, changes in the manufacturing processes, equipment or facilities can result in differences in the product itself due to the live nature of probiotics. The need to reconfirm safety and/or efficacy for any probiotic product made at a different factory is therefore mandatory. Recently, under the brand VSL#3®, a formulation produced by a manufacturer different from the previous one, has been commercialized in some European countries (the UK and Holland). VSL#3 is a high concentration multi-strain preparation which has been recognized by the main Gastroenterology Associations for the dietary management of pouchitis as well as ulcerative colitis. We have compared the “original” VSL#3 produced in USA with the “newfound” VSL#3 produced in Italy. According to our results, the “newfound” VSL#3 has 130–150% more “dead bacteria” compared to the “original” product, raising concerns for the well-known association between dead microbes with adverse effects. The abilities of bacterial lysates from the two formulations to influence in vitro viability and proliferation of different tumor cell lines also resulted different. The repair of previously scratched monolayers of various adherent tumor cell lines (i.e. HT1080, and Caco-2 cells) was inhibited more significantly by the “original” VSL#3 when compared to the “newfound” VSL#3. Tumor cell cycle profile, in particular cell cycle arrest and apoptotic death of the cancer cells, further confirms that the “original” VSL#3 has a better functional profile than the “newfound” VSL#3, at least in in vitro. Our data stress the importance of the production conditions for the “newfound” VSL#3 considering that this product is intended to be used for the dietary management of patients with very serious diseases, such as chronic inflammatory bowel diseases.
Collapse
Affiliation(s)
- Benedetta Cinque
- Department of Life, Health & Environmental Sciences, University of L’Aquila, Building Delta 6, Coppito, L’Aquila, Italy
| | - Cristina La Torre
- Department of Life, Health & Environmental Sciences, University of L’Aquila, Building Delta 6, Coppito, L’Aquila, Italy
| | - Francesca Lombardi
- Department of Life, Health & Environmental Sciences, University of L’Aquila, Building Delta 6, Coppito, L’Aquila, Italy
| | - Paola Palumbo
- Department of Life, Health & Environmental Sciences, University of L’Aquila, Building Delta 6, Coppito, L’Aquila, Italy
| | | | - Maria Grazia Cifone
- Department of Life, Health & Environmental Sciences, University of L’Aquila, Building Delta 6, Coppito, L’Aquila, Italy
- * E-mail:
| |
Collapse
|
19
|
Yu HJ, Liu W, Chang Z, Shen H, He LJ, Wang SS, Liu L, Jiang YY, Xu GT, An MM, Zhang JD. Probiotic BIFICO cocktail ameliorates Hel icobacter pylori induced gastritis. World J Gastroenterol 2015; 21:6561-6571. [PMID: 26074694 PMCID: PMC4458766 DOI: 10.3748/wjg.v21.i21.6561] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Revised: 02/05/2015] [Accepted: 03/12/2015] [Indexed: 02/06/2023] Open
Abstract
AIM: To determine the protective effect of triple viable probiotics on gastritis induced by Helicobacter pylori (H. pylori) and elucidate the possible mechanisms of protection.
METHODS: Colonization of BIFICO strains in the mouse stomach was determined by counting colony-forming units per gram of stomach tissue. After treatment with or without BIFICO, inflammation and H. pylori colonization in the mouse stomach were analyzed by hematoxylin and eosin and Giemsa staining, respectively. Cytokine levels were determined by enzyme-linked immunosorbent assay and Milliplex. The activation of nuclear factor (NF)-κB and MAPK signaling in human gastric epithelial cells was evaluated by Western blot analysis. Quantitative reverse transcription-polymerase chain reaction was used to quantify TLR2, TLR4 and MyD88 mRNA expression in the mouse stomach.
RESULTS: We demonstrated that BIFICO, which contains a mixture of Enterococcus faecalis, Bifidobacterium longum and Lactobacillus acidophilus, was tolerant to the mouse stomach environment and was able to survive both the 8-h and 3-d courses of administration. Although BIFICO treatment had no effect on the colonization of H. pylori in the mouse stomach, it ameliorated H. pylori-induced gastritis by significantly inhibiting the expression of cytokines and chemokines such as TNF-α, IL-1β, IL-10, IL-6, G-CSF and MIP-2 (P < 0.05). These results led us to hypothesize that BIFICO treatment would diminish the H. pylori-induced inflammatory response in gastric mucosal epithelial cells in vitro via the NF-κB and MAPK signaling pathways. Indeed, we observed a decrease in the expression of the NF-κB subunit p65 and in the phosphorylation of IκB-α, ERK and p38. Moreover, there was a significant decrease in the production of IL-8, TNF-α, G-CSF and GM-CSF (P < 0.05), and the increased expression of TLR2, TLR4 and MyD88 induced by H. pylori in the stomach was also significantly reduced following BIFICO treatment (P < 0.05).
CONCLUSION: Our results suggest that the probiotic cocktail BIFICO can ameliorate H. pylori-induced gastritis by inhibiting the inflammatory response in gastric epithelial cells.
Collapse
|
20
|
Farkas K, Bálint A, Bor R, Földesi I, Szűcs M, Nagy F, Szepes Z, Annaházi A, Róka R, Molnár T. Faecal matrix metalloprotease-9 is a more sensitive marker for diagnosing pouchitis than faecal calprotectin: results from a pilot study. Expert Rev Gastroenterol Hepatol 2015; 9:387-92. [PMID: 25264031 DOI: 10.1586/17474124.2015.965144] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Potential non-invasive markers of pouchitis would have a great deal of significance within clinical practice. AIM This study is aimed at assessing the diagnostic accuracy of fecal calprotectin and matrix metalloprotease-9 as potential markers in patients both with and without pouchitis. PATIENTS AND METHODS Stool and blood samples were collected from 33 ileal pouch-anal anastomosis patients before a follow-up pouchoscopy. Biopsy samples were taken for histological purposes. The presence of cuffitis and stenosis was evaluated with an endoscopy. Calprotectin and matrix metalloprotease-9 were quantified with an enzyme-linked immunosorbent assay. RESULTS Pouchitis was detected in 30.3% of the patients. The levels of fecal calprotectin and matrix metalloprotease-9 increased significantly in patients with pouchitis. The sensitivity and specificity of matrix metalloprotease-9 was higher than that of fecal calprotectin. Only matrix metalloprotease-9 correlated significantly with the severity of pouchitis. DISCUSSION Fecal matrix metalloprotease-9 has a high specificity in the diagnosis of pouchitis.
Collapse
Affiliation(s)
- Klaudia Farkas
- First Department of Medicine, University of Szeged H-6720, Korányi fasor 8, Szeged, Hungary
| | | | | | | | | | | | | | | | | | | |
Collapse
|
21
|
Farkas K, Saródi Z, Bálint A, Földesi I, Tiszlavicz L, Szűcs M, Nyári T, Tajti J, Nagy F, Szepes Z, Bor R, Annaházi A, Róka R, Molnár T. The diagnostic value of a new fecal marker, matrix metalloprotease-9, in different types of inflammatory bowel diseases. J Crohns Colitis 2015; 9:231-7. [PMID: 25585596 DOI: 10.1093/ecco-jcc/jjv005] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Only limited data are available regarding the diagnostic accuracy of fecal matrix metalloprotease-9 [MMP-9] for inflammatory bowel disease [IBD]. The aims of our study were to assess the diagnostic accuracy of fecal MMP-9 in patients with active Crohn's disease [CD], ulcerative colitis [UC], and pouchitis, and to compare the diagnostic accuracy of fecal MMP-9 and fecal calprotectin [CP] in IBD. METHODS Stool and blood samples were collected in 50 CD, 54 UC, and 34 ileal pouch-anal anastomosis patients before control endoscopies were performed. Biopsies were taken for histologic purposes. The activities of CD, UC, and pouchitis were defined with the use of clinical, endoscopic, and histologic activity scores. Fecal CP and MMP-9 levels were quantified by enzyme-linked immunosorbent assay. RESULTS Active CD, UC, and pouchitis were detected in 38%, 54%, and 29% of the patients, respectively. A significant correlation was revealed between fecal CP and the clinical activities of CD and UC, and between fecal CP and the endoscopic activity of UC and pouchitis. Fecal MMP-9 did not correlate with any of the activity indices of CD; however, strong associations were shown between fecal MMP-9 and clinical, endoscopic, and histologic activities of both UC and pouchitis. CONCLUSIONS This is the first study assessing the diagnostic accuracy of MMP-9 in different types of IBD. Our results showed that fecal MMP-9 has high sensitivity in the detection of endoscopically active UC and pouchitis. These non-invasive methods help assess intestinal inflammation.
Collapse
Affiliation(s)
- Klaudia Farkas
- First Department of Medicine, University of Szeged, Hungary
| | - Zoltán Saródi
- First Department of Medicine, University of Szeged, Hungary
| | - Anita Bálint
- First Department of Medicine, University of Szeged, Hungary
| | - Imre Földesi
- First Department of Medicine, University of Szeged, Hungary
| | | | - Mónika Szűcs
- Department of Medical Physics and Informatics, University of Szeged, Hungary
| | - Tibor Nyári
- Department of Medical Physics and Informatics, University of Szeged, Hungary
| | - János Tajti
- Department of Surgery, University of Szeged, Hungary
| | - Ferenc Nagy
- First Department of Medicine, University of Szeged, Hungary
| | - Zoltán Szepes
- First Department of Medicine, University of Szeged, Hungary
| | - Renáta Bor
- First Department of Medicine, University of Szeged, Hungary
| | - Anita Annaházi
- First Department of Medicine, University of Szeged, Hungary
| | - Richárd Róka
- First Department of Medicine, University of Szeged, Hungary
| | - Tamás Molnár
- First Department of Medicine, University of Szeged, Hungary
| |
Collapse
|
22
|
Effects of Lactobacillus acidophilus dietary supplementation on the performance, intestinal barrier function, rectal microflora and serum immune function in weaned piglets challenged with Escherichia coli lipopolysaccharide. Antonie van Leeuwenhoek 2015; 107:883-91. [DOI: 10.1007/s10482-015-0380-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 01/07/2015] [Indexed: 10/24/2022]
|
23
|
Chen P, Zhang Q, Dang H, Liu X, Tian F, Zhao J, Chen Y, Zhang H, Chen W. Oral administration of Lactobacillus rhamnosus CCFM0528 improves glucose tolerance and cytokine secretion in high-fat-fed, streptozotocin-induced type 2 diabetic mice. J Funct Foods 2014. [DOI: 10.1016/j.jff.2014.06.014] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
|
24
|
Effect of probiotics on inducing remission and maintaining therapy in ulcerative colitis, Crohn's disease, and pouchitis: meta-analysis of randomized controlled trials. Inflamm Bowel Dis 2014; 20:21-35. [PMID: 24280877 DOI: 10.1097/01.mib.0000437495.30052.be] [Citation(s) in RCA: 210] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Whether probiotics are beneficial at all stages of treatment in inflammatory bowel disease or superior to placebo remains controversial. METHODS Two reviewers independently selected randomized controlled trials comparing probiotics with controls in inflammatory bowel disease and extracted data related to remission/response rates, relapse rates, and adverse events. Subanalyses were also performed. RESULTS Twenty-three randomized controlled trials with a total of 1763 participants met the inclusion criteria. From the meta-analysis, probiotics significantly increase the remission rates in patients with active ulcerative colitis (UC) (P = 0.01, risk ratio [RR] = 1.51). The remission rates were significantly higher in patients with active UC treated with probiotics than placebo (P < 0.0001, RR = 1.80). Unfortunately, subgroup analysis found that only VSL#3 significantly increased the remission rates compared with controls in patients with active UC (P = 0.004, RR = 1.74). Interestingly, VSL#3 (P < 0.00001, RR = 0.18) also significantly reduced the clinical relapse rates for maintaining remission in patients with pouchitis. No significantly different adverse events were detected between probiotics and controls in the treatment of UC (P = 0.94, RR = 0.99) or CD (P = 0.33, RR = 0.87). CONCLUSIONS Administration of probiotics results in additional benefit in inducing remission of patients with UC. VSL#3 are beneficial for maintaining remission in patients with pouchitis. And, probiotics can provide the similar effect as 5-aminosalicylic acid on maintaining remission of UC, although no additional adverse events presented.
Collapse
|
25
|
Persborn M, Söderholm JD. Commentary: The effects of probiotics on barrier function and mucosal pouch microbiota during maintenance treatment for severe pouchitis in patients with ulcerative colitis - Authors' reply. Aliment Pharmacol Ther 2013; 38:1406-7. [PMID: 24206373 DOI: 10.1111/apt.12535] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2013] [Accepted: 09/30/2013] [Indexed: 12/08/2022]
Affiliation(s)
- M Persborn
- Department of Surgery, Linköping University, Linköping, Sweden
| | | |
Collapse
|
26
|
Pouchitis: what every gastroenterologist needs to know. Clin Gastroenterol Hepatol 2013; 11:1538-49. [PMID: 23602818 DOI: 10.1016/j.cgh.2013.03.033] [Citation(s) in RCA: 103] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Revised: 03/12/2013] [Accepted: 03/28/2013] [Indexed: 02/07/2023]
Abstract
Pouchitis is the most common complication among patients with ulcerative colitis who have undergone restorative proctocolectomy with ileal pouch-anal anastomosis. Pouchitis is actually a spectrum of diseases that vary in etiology, pathogenesis, phenotype, and clinical course. Although initial acute episodes typically respond to antibiotic therapy, patients can become dependent on antibiotics or develop refractory disease. Many factors contribute to the course of refractory pouchitis, such as the use of nonsteroidal anti-inflammatory drugs, infection with Clostridium difficile, pouch ischemia, or concurrent immune-mediated disorders. Identification of these secondary factors can help direct therapy.
Collapse
|
27
|
Pagnini C, Fave GD, Bamias G. Probiotics in inflammatory bowel disease: Pathophysiological background and clinical applications. World J Immunol 2013; 3:31-43. [DOI: 10.5411/wji.v3.i3.31] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2013] [Revised: 08/06/2013] [Accepted: 08/13/2013] [Indexed: 02/05/2023] Open
Abstract
Ulcerative colitis and Crohn’s disease, collectively termed the inflammatory bowel diseases (IBD), are chronic inflammatory disorders of the gastrointestinal tract. A “dysbiotic” relationship between the commensal gut flora and the intestinal mucosa-associated immune system has been at the core of the pathogenesis of these conditions. Probiotics are “good bacteria” with the ability to benefit the health of the host and their therapeutic application has been studied in IBD. The theoretical basis for such utilization relies upon the ability of probiotic microorganisms to interfere with the dysregulated homeostasis that takes place in IBD and restore the immune-bacterial interaction at the intestinal mucosa. Proposed mechanisms of action include the reconstitution of altered flora composition, enhancement of the integrity of the epithelial barrier, promotion of tolerogenic action by dendritic cells, strengthening of the defensive mechanisms of the innate immunity, and the suppression of pro-inflammatory adaptive immune responses. Despite this abundance of supporting experimental evidence, clinical application of probiotics in IBD has been disappointing. Possible explanations for such discrepancy include the great diversity of microorganisms that fall under the definition of probiotics, the lack of standardization of dosages and administration schemes, the heterogeneity between clinical trials, and the inclusion in the treatment arms of patients with a large variety of clinical phenotypes. Addressing these important issues will be critical for the optimal usage of probiotic-based therapies for patients with IBD.
Collapse
|
28
|
Persborn M, Gerritsen J, Wallon C, Carlsson A, Akkermans LMA, Söderholm JD. The effects of probiotics on barrier function and mucosal pouch microbiota during maintenance treatment for severe pouchitis in patients with ulcerative colitis. Aliment Pharmacol Ther 2013; 38:772-83. [PMID: 23957603 DOI: 10.1111/apt.12451] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2013] [Revised: 05/14/2013] [Accepted: 07/23/2013] [Indexed: 12/30/2022]
Abstract
BACKGROUND A total of 10-15% of patients with an ileoanal pouch develop severe pouchitis necessitating long-term use of antibiotics or pouch excision. Probiotics reduce the risk of recurrence of pouchitis, but mechanisms behind these effects are not fully understood. AIM To examine mucosal barrier function in pouchitis, before and after probiotic supplementation and to assess composition of mucosal pouch microbiota. METHODS Sixteen patients with severe pouchitis underwent endoscopy with biopsies of the pouch on three occasions: during active pouchitis; clinical remission by 4 weeks of antibiotics; after 8 weeks of subsequent probiotic supplementation (Ecologic 825, Winclove, Amsterdam, the Netherlands). Thirteen individuals with a healthy ileoanal pouch were sampled once as controls. Ussing chambers were used to assess transmucosal passage of Escherichia coli K12, permeability to horseradish peroxidase (HRP) and ⁵¹Cr-EDTA. Composition and diversity of the microbiota was analysed using Human Intestinal Tract Chip. RESULTS Pouchitis Disease Activity Index (PDAI) was significantly improved after antibiotic and probiotic supplementation. Escherichia coli K12 passage during active pouchitis [3.7 (3.4-8.5); median (IQR)] was significantly higher than in controls [1.7 (1.0-2.4); P < 0.01], did not change after antibiotic treatment [5.0 (3.3-7.1); P = ns], but was significantly reduced after subsequent probiotic supplementation [2.2 (1.7-3.3); P < 0.05]. No significant effects of antibiotics or probiotics were observed on composition of mucosal pouch microbiota; however, E. coli passage correlated with bacterial diversity (r = -0.40; P = 0.018). Microbial groups belonging to Bacteroidetes and Clostridium clusters IX, XI and XIVa were associated with healthy pouches. CONCLUSIONS Probiotics restored the mucosal barrier to E. coli and HRP in patients with pouchitis, a feasible factor in prevention of recurrence during maintenance treatment. Restored barrier function did not translate into significant changes in mucosal microbiota composition, but bacterial diversity correlated with barrier function.
Collapse
Affiliation(s)
- M Persborn
- Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | | | | | | | | | | |
Collapse
|
29
|
Heilmann RM, Jergens AE, Ackermann MR, Barr JW, Suchodolski JS, Steiner JM. Serum calprotectin concentrations in dogs with idiopathic inflammatory bowel disease. Am J Vet Res 2013; 73:1900-7. [PMID: 23176415 DOI: 10.2460/ajvr.73.12.1900] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To measure serum calprotectin concentration in dogs with inflammatory bowel disease (IBD) before and after initiation of treatment and evaluate its correlation with a clinical scoring system (canine IBD activity index), serum canine C-reactive protein concentration, and severity of histopathologic changes. ANIMALS 34 dogs with idiopathic IBD and 139 healthy control dogs. PROCEDURES From dogs with IBD, blood samples were collected immediately before (baseline) and 3 weeks after initiation of 1 of 2 treatments: prednisone (1 mg/kg, PO, q 12 h; n = 21) or a combination of prednisone and metronidazole (10 mg/kg, PO, q 12 h; 13). Blood samples were collected once from each of the control dogs. For all samples, serum calprotectin concentration was determined via radioimmunoassay. RESULTS Mean serum calprotectin concentrations for dogs with IBD at baseline (431.1 μg/L) and 3 weeks after initiation of treatment (676.9 μg/L) were significantly higher, compared with that (219.4 μg/L) for control dogs, and were not significantly correlated with the canine IBD activity index, serum C-reactive protein concentration, or severity of histopathologic changes. The use of a serum calprotectin concentration of ≥ 296.0 μg/L as a cutoff had a sensitivity of 82.4% (95% confidence interval, 65.5% to 93.2%) and specificity of 68.4% (95% confidence interval, 59.9% to 76.0%) for distinguishing dogs with idiopathic IBD from healthy dogs. CONCLUSIONS AND CLINICAL RELEVANCE Serum calprotectin concentration may be a useful biomarker for the detection of inflammation in dogs, but the use of certain drugs (eg, glucocorticoids) appears to limit its clinical usefulness.
Collapse
Affiliation(s)
- Romy M Heilmann
- Gastrointestinal Laboratory, Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX 77843, USA.
| | | | | | | | | | | |
Collapse
|
30
|
Banasiewicz T, Walkowiak J, Drzymała-Czyż S, Borejsza-Wysocki M, Majewski P, Biczysko M, Stojcev Z, Herzig KH, Drews M. Stricture of ileo-anal J pouch anastomosis increased the intensity of pouchitis in an experimental rat model. Med Sci Monit 2013; 18:BR409-13. [PMID: 23018348 PMCID: PMC3560548 DOI: 10.12659/msm.883481] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Background Pouchitis appears to be the most common complication after restorative proctocolectomy. Material/Methods In experimental models we investigated the correlation between the width of anastomosis and the frequency of pouchitis. Twenty-three Wistar rats underwent restorative proctocolectomy under pentobarbital anesthesia. Normal width anastomosis was performed in 11 animals (Group I). In the remaining 12 animals (Group II) the diameter of anastomosis was reduced by 50%. All animals were sacrificed and the pouch mucosa was histologically (Moskowitz score) and immunohistochemically (IL-1, IL-6, IL-10, IL-12 expression) examined. Results Morphological assessment of pouchitis symptoms based on Moskowitz scale revealed considerably more severe inflammation (p=0.0079) in the animals from Group II than in the rats from Group I. The expressions of investigated cytokines, assessed qualitatively in histopathological examination, were higher in rats with narrow anastomosis in comparison with animals with normal anastomosis. Conclusions The stricture of anastomosis increases the intensity of pouchitis and stimulates the production of interleukins. It seems that anastomotic stricture plays an important role in the development of pouchitis.
Collapse
Affiliation(s)
- Tomasz Banasiewicz
- Department of General Surgery, Gastroenterological Oncological Surgery and Plastic Surgery, K. Marcinkowski University of Medical Sciences, Poznan, Poland.
| | | | | | | | | | | | | | | | | |
Collapse
|
31
|
Mäkitalo L, Piekkala M, Ashorn M, Pakarinen M, Koivusalo A, Karikoski R, Natunen J, Saarialho-Kere U, Rintala R, Kolho KL. Matrix metalloproteinases in the restorative proctocolectomy pouch of pediatric ulcerative colitis. World J Gastroenterol 2012; 18:4028-36. [PMID: 22912554 PMCID: PMC3420000 DOI: 10.3748/wjg.v18.i30.4028] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2012] [Revised: 05/09/2012] [Accepted: 05/13/2012] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate matrix metalloproteinases (MMPs) and their tissue inhibitors (TIMPs) in pouch mucosa of pediatric onset ulcerative colitis (UC).
METHODS: In this cross-sectional study, 28 patients with pediatric onset UC underwent ileal pouch biopsy 13 years (median) after proctocolectomy. Expression of MMPs-3, -7, -8, -9, -12 and -26 and TIMPs-1, -2 and -3 in samples was examined using immunohistochemichal methods, and another biopsy was used to evaluate the grade of histological inflammation. Two investigators independently graded the immunohistochemical specimens in a semiquantitative fashion, using a scale marking staining intensity as follows: 0 = less than 20 positive cells; 1 = 20-50 positive cells; 2 = 50-200 positive cells; 3 = over 20 positive cells. Fecal calprotectin and blood inflammatory markers [serum C-reactive protein (CRP) and erythrocyte sedimentation rate] were determined during a follow-up visit to examine correlations between these markers and the expression of MMPs and TIMPs.
RESULTS: Of the 28 patients with pediatric onset UC, nine had not experienced pouchitis, whereas thirteen reported a single episode, and six had recurrent pouchitis (≥ 4 episodes). At the time of the study, six patients required metronidazole. In all of the others, the most recent episode of pouchitis had occurred over one month earlier, and none were on antibiotics. Only four samples depicted no sign of inflammation, and these were all from patients who had not had pouchitis. Two samples were too small to determine the grade of inflammation, but both had suffered pouchitis, the other recurrent. No sample depicted signs of colonic metaplasia. Most pouch samples showed expression of epithelial (e) and stromal (s) MMP-3 (e, n = 22; s, n = 20), MMP-7 (e, n = 28; s, n = 27), MMP-12 (e, n = 20; s, n =24), TIMP-2 (e, n = 23; s, n = 23) and MMP-3 (e, n = 23; s, n = 28) but MMP-8 (e, n = 0; s, n = 1), MMP-9 (e, n = 0; s, n = 9) and MMP-26 (e, n = 0; s, n = 3) and TIMP-1 (n = 0, both) were lacking. In samples with low grade of inflammatory activity, the epithelial MMP-3 and MMP-7 expression was increased (r = -0.614 and r = -0.472, respectively, P < 0.05 in both). MMPs and TIMPs did not correlate with the markers of inflammation, fecal calprotectin, erythrocyte sedimentation rate, or CRP, with the exception of patients with low fecal calprotectin (< 100 μg/g) in whom a higher expression of epithelial MMP-7 was found no differences in MMP- or TIMP-profiles were seen in patients with a history of pouchitis compared to ones with no such episodes. Anastomosis with either straight ileoanal anastomosis or ileoanal anastomosis with J-pouch did depict differences in MMP- or TIMP-expression.
CONCLUSION: The expression of MMPs pediatric UC pouch in the long-term shares characteristics with inflammatory bowel disease, but inflammation cannot be classified as a reactivation of the disease.
Collapse
|
32
|
Jonkers D, Penders J, Masclee A, Pierik M. Probiotics in the management of inflammatory bowel disease: a systematic review of intervention studies in adult patients. Drugs 2012; 72:803-23. [PMID: 22512365 DOI: 10.2165/11632710-000000000-00000] [Citation(s) in RCA: 166] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Mounting evidence suggests an important role for the intestinal microbiota in the chronic mucosal inflammation that occurs in inflammatory bowel disease (IBD), and novel molecular approaches have further identified a dysbiosis in these patients. Several mechanisms of action of probiotic products that may interfere with possible aetiological factors in IBD have been postulated. OBJECTIVE Our objective was to discuss the rationale for probiotics in IBD and to systematically review clinical intervention studies with probiotics in the management of IBD in adults. METHODS A systematic search was performed in PubMed up to 1 October 2011, using defined keywords. Only full-text papers in the English language addressing clinical outcomes in adult patients were included. The 41 eligible studies were categorized on disease type (ulcerative colitis [UC] with/without an ileo-anal pouch and Crohn's disease [CD]) and disease activity. Pooled odds ratios were only calculated per probiotic for a specific patient group when more than one randomized controlled trial was available. RESULTS Well designed randomized controlled trials supporting the application of probiotics in the management of IBD are still limited. Meta-analyses could only be performed for a limited number of studies revealing overall risk ratios of 2.70 (95% CI 0.47, 15.33) for inducing remission in active UC with Bifido-fermented milk versus placebo or no additive treatment (n = 2); 1.88 (95% CI 0.96, 3.67) for inducing remission in active UC with VSL#3 versus placebo (n = 2); 1.08 (95% CI 0.86, 1.37) for preventing relapses in inactive UC with Escherichia coli Nissle 1917 versus standard treatment (n = 3); 0.17 (95% CI 0.09, 0.33) for preventing relapses in inactive UC/ileo-anal pouch anastomosis (IPAA) patients with VSL#3 versus placebo; 1.21 (95% CI 0.57, 2.57) for preventing endoscopic recurrences in inactive CD with Lactobacillus rhamnosus GG versus placebo (n = 2); and 0.93 (95% CI 0.63, 1.38) for preventing endoscopic recurrences in inactive CD with Lactobacillus johnsonii versus placebo (n = 2). CONCLUSION Further well designed studies based on intention-to-treat analyses by several independent research groups are still warranted to support the promising results for E. coli Nissle in inactive UC and the multispecies product VSL#3 in active UC and inactive pouch patients. So far, no evidence is available to support the use of probiotics in CD. Future studies should focus on specific disease subtypes and disease location. Further insight into the aetiology of IBD and the mechanisms of probiotic strains will aid in selecting probiotic strains for specific disease entities and disease locations.
Collapse
Affiliation(s)
- Daisy Jonkers
- Division of Gastroenterology-Hepatology, Research School Nutrim, Maastricht University Medical Centre, Maastricht, the Netherlands.
| | | | | | | |
Collapse
|
33
|
Chen YP, Hsiao PJ, Hong WS, Dai TY, Chen MJ. Lactobacillus kefiranofaciens M1 isolated from milk kefir grains ameliorates experimental colitis in vitro and in vivo. J Dairy Sci 2012; 95:63-74. [PMID: 22192184 DOI: 10.3168/jds.2011-4696] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Accepted: 09/25/2011] [Indexed: 12/13/2022]
Abstract
Lactobacillus kefiranofaciens M1, isolated from and identified in Taiwanese milk kefir grain, has demonstrated immune-modulating activity. In the present study, we further investigated the effects of Lb. kefiranofaciens M1 on intestinal epithelial cells in vitro and on dextran sodium sulfate (DSS)-induced colitis in vivo. The possible mechanisms regarding the cytokine products and intestinal epithelial barrier restoration as well as the putative receptor for the protective effects of Lb. kefiranofaciens M1 were investigated. In vitro results indicated that Lb. kefiranofaciens M1 could strengthen the epithelial barrier function in vitro by increasing the transepithelial electrical resistance (TEER) and significantly upregulated the level of the chemokine CCL-20 at both the apical and basolateral sites. The in vivo effects of Lb. kefiranofaciens M1 on the regulation of intestinal physiology indicate that this strain could ameliorate DSS-induced colitis with a significant attenuation of the bleeding score and colon length shortening. Production of proinflammatory cytokines was decreased and that of the antiinflammatory cytokine IL-10 was increased in the DSS-treated mice given Lb. kefiranofaciens M1. The putative receptor for the protective effects of Lb. kefiranofaciens M1 was toll-like receptor 2 (TLR2), which was involved in probiotic-induced cytokine production in vitro and in attenuation of the bleeding score and colon length shortening in vivo. In this study, the kefir lactobacillus Lb. kefiranofaciens M1 clearly demonstrated an anticolitis effect. Based on these results, Lb. kefiranofaciens M1 has the potential to be applied in fermented dairy products as an alternative therapy for intestinal disorders.
Collapse
Affiliation(s)
- Y P Chen
- Department of Animal Science and Technology, National Taiwan University, Taipei, Taiwan, ROC
| | | | | | | | | |
Collapse
|
34
|
Abstract
Restorative proctocolectomy with ileal pouch-anal anastomosis has become the procedure of choice for the majority of patients with ulcerative colitis who require surgical treatment. Pouchitis, the most common long-term complication of the procedure, involves a spectrum of disease processes with heterogeneous risk factors, clinical features, disease courses and prognoses. In addition, clinical symptoms of pouchitis are not specific and often overlap with those of other inflammatory and functional pouch disorders, such as Crohn's disease of the pouch and irritable pouch syndrome. Pouchoscopy and biopsy, along with laboratory and radiographic evaluations, are often required for accurate diagnosis in patients with symptoms indicative of pouchitis. Dysbiosis has been implicated as a triggering factor for pouchitis, and concurrent infection with pathogens, such as Clostridium difficile, might contribute to disease relapse and exacerbation. Antibiotic therapy is the main treatment modality. However, the management of antibiotic-dependent and antibiotic-refractory pouchitis remains challenging. Secondary causes of pouchitis, such as ischaemia, NSAID use, the presence of concurrent primary sclerosing cholangitis and other systemic immune-mediated disorders, should be evaluated and properly managed.
Collapse
|
35
|
Matarese LE, Kandil HM. Preventing Bacteria-Induced Disease With Bacteria. Nutr Clin Pract 2012; 27:242-6. [DOI: 10.1177/0884533612440250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
|
36
|
Khan MW, Kale AA, Bere P, Vajjala S, Gounaris E, Pakanati KC. Microbes, intestinal inflammation and probiotics. Expert Rev Gastroenterol Hepatol 2012; 6:81-94. [PMID: 22149584 DOI: 10.1586/egh.11.94] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Inflammatory bowel disease (IBD) is known for causing disturbed homeostatic balance among the intestinal immune compartment, epithelium and microbiota. Owing to the emergence of IBD as a major cause of morbidity and mortality, great efforts have been put into understanding the sequence of intestinal inflammatory events. Intestinal macrophages and dendritic cells act in a synergistic fashion with intestinal epithelial cells and microbiota to initiate the triad that governs the intestinal immune responses (whether inflammatory or regulatory). In this review, we will discuss the interplay of intestinal epithelial cells, bacteria and the innate immune component. Moreover, whether or not genetic intervention of probiotic bacteria is a valid approach for attenuating/mitigating exaggerated inflammation and IBD will also be discussed.
Collapse
Affiliation(s)
- Mohammad W Khan
- The Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA.
| | | | | | | | | | | |
Collapse
|
37
|
Abdelouhab K, Rafa H, Toumi R, Bouaziz S, Medjeber O, Touil-Boukoffa C. Mucosal intestinal alteration in experimental colitis correlates with nitric oxide production by peritoneal macrophages: effect of probiotics and prebiotics. Immunopharmacol Immunotoxicol 2012; 34:590-7. [PMID: 22211319 DOI: 10.3109/08923973.2011.641971] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Inflammatory bowel disease (IBD) consists mainly of Ulcerative colitis (UC) and Crohn disease (CD). Although its aetiology is still not clearly established, it is thought to be due to overly aggressive immune response to enteric bacteria in genetically predisposed individuals. Manipulating the microbiota using probiotics or prebiotics is considered as a promising field of new therapeutic strategies used to attenuate immune disorders observed during IBD. The production of nitric oxide (NO) seems to be implicated in IBD pathogenesis. In our study, an acute UC was induced in Swiss mice using 3% Dextran Sulfate Sodium (DSS). The preventive effects of "Ultrabiotique®" (a probiotic) and inulin (a prebiotic) on the colitis were investigated. The production of NO was evaluated in the supernatants of peritoneal macrophages (pMφ) cultures. Colonic mucosa histology was subsequently examined. Results showed severe acute UC after administration of DSS. High levels of NO in pMφ cultures were also observed compared to control samples. These findings correlated with a significant destruction of the colonic mucosa. Oral administration of Ultrabiotique® or inulin decreased the severity of DSS-induced colitis. These treatments lead to a decrease in NO levels in pMφ cultures. A considerable reduction of colonic lesions was also noticed. Our findings suggest the involvement of NO in experimental UC pathogenesis. Pre- and pro-biotics, as discussed herein, seem to have an anti-inflammatory effect.
Collapse
Affiliation(s)
- Katia Abdelouhab
- Department of Biological Sciences, Laboratory of Cellular and Molecular Biology, Cytokines and NOSynthases Group, USTHB, Algiers, Algeria
| | | | | | | | | | | |
Collapse
|
38
|
Crooks NH, Snaith C, Webster D, Gao F, Hawkey P. Clinical review: Probiotics in critical care. Crit Care 2012. [PMCID: PMC3672545 DOI: 10.1186/cc11382] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
|
39
|
Appleyard CB, Cruz ML, Isidro AA, Arthur JC, Jobin C, De Simone C. Pretreatment with the probiotic VSL#3 delays transition from inflammation to dysplasia in a rat model of colitis-associated cancer. Am J Physiol Gastrointest Liver Physiol 2011; 301:G1004-13. [PMID: 21903764 PMCID: PMC3233787 DOI: 10.1152/ajpgi.00167.2011] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Evidence supports involvement of microflora in the transition of chronic inflammation to neoplasia. We investigated the protective efficacy of the probiotic VSL#3 in a model of colitis-associated colorectal cancer. Chronic colitis was induced in Sprague-Dawley rats by administration of trinitrobenzene sulfonic acid (TNBS), followed 6 wk later by systemic reactivation. To induce colitis-associated dysplasia and cancer, the animals received TNBS (intravenously) twice a week for 10 wk. One group received VSL#3 in drinking water from 1 wk before colitis induction until death. The colons were examined for damage and presence of dysplasia or cancer. Samples were analyzed for cell proliferation and apoptosis, vitamin D receptor (VDR) expression, angiogenic factors, and presence of alkaline sphingomyelinase or phosphatase. Microbial community composition was evaluated by terminal restriction fragment-length polymorphism analysis of the bacterial 16S rRNA gene. None of the probiotic-treated animals developed carcinoma, and no high-grade dysplasia was found in either the proximal or mid colon. In contrast, 29% of the animals in the control group developed carcinoma in one or more regions of the colon. VSL#3-treated animals had significantly less damage than the vehicle treated-controls in all areas of the colon, and this correlated with decreased richness and diversity of the mucosally adherent microbiota. Treatment with the probiotic increased the antiangiogenic factor angiostatin, VDR expression, and alkaline sphingomyelinase. We concluded that pretreatment with the probiotic VSL#3 can attenuate various inflammatory-associated parameters, delaying transition to dysplasia and cancer, thus offering its potential therapeutic use in patients with long-standing colitis.
Collapse
Affiliation(s)
- Caroline B. Appleyard
- 1Department of Physiology and Pharmacology, Ponce School of Medicine, Ponce, Puerto Rico;
| | - Myrella L. Cruz
- 1Department of Physiology and Pharmacology, Ponce School of Medicine, Ponce, Puerto Rico;
| | - Angel A. Isidro
- 1Department of Physiology and Pharmacology, Ponce School of Medicine, Ponce, Puerto Rico;
| | - Janelle C. Arthur
- 2Department of Medicine, University of North Carolina, Chapel Hill, North Carolina; and
| | - Christian Jobin
- 2Department of Medicine, University of North Carolina, Chapel Hill, North Carolina; and
| | - Claudio De Simone
- 3Department of Experimental Medicine, University of L'Aquila, L'Aquila, Italy
| |
Collapse
|
40
|
Streptococcus thermophilus ST28 ameliorates colitis in mice partially by suppression of inflammatory Th17 cells. J Biomed Biotechnol 2011; 2011:378417. [PMID: 22013382 PMCID: PMC3196311 DOI: 10.1155/2011/378417] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2010] [Revised: 04/05/2011] [Accepted: 06/28/2011] [Indexed: 12/30/2022] Open
Abstract
The effects of Streptococcus thermophilus ST28 on cytokine production by murine splenocytes stimulated with transforming growth factor-β plus interleukin- (IL-) 6 were evaluated. The addition of ST28 significantly repressed IL-17 production compared to ATCC 19258 (type strain). ST28 also decreased the number of Th17 cells in the stimulated splenocytes. The anti-inflammatory effects of ST28 administration were evaluated in mice with colitis induced by dextran sodium sulphate (DSS). Oral treatment of mice with ST28 ameliorated the intestinal lesions by DSS. Upon DSS treatment, IL-17 production in lamina propria lymphocytes (LPLs) was induced, but ST28 significantly decreased its production. ST28 also decreased the percentage of Th17 cells in LPL from DSS-induced colitis. The present results imply that ST28 suppresses the Th17 response in inflamed intestines and would be useful in the treatment of Th17-mediated diseases, such as inflammatory bowel disease.
Collapse
|
41
|
Gut microbiota and the role of probiotics in therapy. Curr Opin Pharmacol 2011; 11:593-603. [PMID: 21996283 DOI: 10.1016/j.coph.2011.09.010] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2011] [Revised: 09/23/2011] [Accepted: 09/26/2011] [Indexed: 02/08/2023]
Abstract
Thanks to rapid progress in the development and application of molecular techniques to the assessment of the human gut microbiome, the true nature, diversity and metabolic potential of this 'hidden organ' are being revealed. Simultaneously, the complex physiological, immunological and metabolic interactions between host and microbiome are being untangled. By contrast, the probiotic concept has been with us for decades and, while supported more by fad and folklore in the past, is now gaining support, not only from experimental work in animal models, but also by well-designed studies in human diseases, most notably infectious diarrheas, inflammatory bowel disease and the irritable bowel syndrome.
Collapse
|
42
|
Duary RK, Bhausaheb MA, Batish VK, Grover S. Anti-inflammatory and immunomodulatory efficacy of indigenous probiotic Lactobacillus plantarum Lp91 in colitis mouse model. Mol Biol Rep 2011; 39:4765-75. [PMID: 21947851 DOI: 10.1007/s11033-011-1269-1] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2011] [Accepted: 09/14/2011] [Indexed: 12/12/2022]
Abstract
Probiotics can affect the immune homeostasis by altering the gut microbial balance and enhancing the immune system of gut, thus benefits in Inflammatory Bowel Disease, including Crohn's disease and Ulcerative colitis. Relative gene expression of pro, anti-inflammatory cytokines and other molecules in 2,4,6-trinitrobenzene sulfonic acid-induced colitis mouse model against Lactobacillus plantarum Lp91 (L. plantarum Lp91) was investigated by reverse transcription-quantitative PCR (RT-qPCR) using relative expression software tool (REST 2008 V2.0.7). L. plantarum Lp91 evoked significant down regulation of TNF-α and COX2 to 0.026 and 0.077 fold in colitis mouse model. No significant difference in expression of IL-12a cytokine in colitis mouse challenged with L. plantarum Lp91 was also observed. IL-10 was significantly up-regulated to 37.813 and 1.327 fold in colitis and non-colitis mouse challenged with L. plantarum Lp91. While, other anti-inflammatory markers i.e. COX1, IL-4 and IL-6 were significantly up regulated in colitis mouse challenged with L. plantarum Lp91. MUC2 gene was significantly up regulated to 2.216 fold in non-colitis group. L. plantarum Lp91, an indigenous probiotic culture, the main subject of this project exhibited strong immunemodulatory properties under in vivo conditions in mouse colitis model.
Collapse
Affiliation(s)
- Raj Kumar Duary
- Department of Food Engineering and Technology, Tezpur University, Napaam, Assam, 784028, India
| | | | | | | |
Collapse
|
43
|
Philippe D, Favre L, Foata F, Adolfsson O, Perruisseau-Carrier G, Vidal K, Reuteler G, Dayer-Schneider J, Mueller C, Blum S. Bifidobacterium lactis attenuates onset of inflammation in a murine model of colitis. World J Gastroenterol 2011; 17:459-69. [PMID: 21274375 PMCID: PMC3027012 DOI: 10.3748/wjg.v17.i4.459] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2010] [Revised: 07/30/2010] [Accepted: 08/07/2010] [Indexed: 02/06/2023] Open
Abstract
AIM To assess the anti-inflammatory effect of the probiotic Bifidobacterium lactis (B. lactis) in an adoptive transfer model of colitis. METHODS Donor and recipient mice received either B. lactis or bacterial culture medium as control (deMan Rogosa Sharpe) in drinking water for one week prior to transfer of a mix of naive and regulatory T cells until sacrifice. RESULTS All recipient mice developed signs of colonic inflammation, but a significant reduction of weight loss was observed in B. lactis-fed recipient mice compared to control mice. Moreover, a trend toward a diminution of mucosal thickness and attenuated epithelial damage was revealed. Colonic expression of pro-inflammatory and T cell markers was significantly reduced in B. lactis-fed recipient mice compared to controls. Concomitantly, forkhead box protein 3, a marker of regulatory T cells, was significantly up-regulated by B. lactis. CONCLUSION Daily oral administration of B. lactis was able to reduce inflammatory and T cells mediators and to promote regulatory T cells specific markers in a mouse model of colitis.
Collapse
|
44
|
Nikfar S, Darvish-Da M, Abdollahi M. A Review and Meta-analysis of the Efficacy of Antibiotics and Probiotics in Management of Pouchitis. INT J PHARMACOL 2010. [DOI: 10.3923/ijp.2010.826.835] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
45
|
Ng SC, Plamondon S, Kamm MA, Hart AL, Al-Hassi HO, Guenther T, Stagg AJ, Knight SC. Immunosuppressive effects via human intestinal dendritic cells of probiotic bacteria and steroids in the treatment of acute ulcerative colitis. Inflamm Bowel Dis 2010; 16:1286-98. [PMID: 20155842 DOI: 10.1002/ibd.21222] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND In ulcerative colitis (UC) gut bacteria drive inflammation. Bacterial recognition and T-cell responses are shaped by intestinal dendritic cells (DCs); therapeutic effects of probiotic bacteria may relate to modulation of intestinal DC. The probiotic mixture, VSL#3, increases interleukin (IL)-10 and downregulates IL-12p40 production by DC in vitro. We evaluated in vivo effects of oral VSL#3 and steroids on colonic DC in patients with acute UC. METHODS Rectal biopsies were obtained from patients with active UC before and after treatment with VSL#3, corticosteroids, or placebo, and from healthy controls. Myeloid colonic DC were studied from freshly isolated lamina propria cells using multicolor flow cytometry. Surface expression of activation markers, CD40, CD86, pattern recognition receptors, Toll-like receptor (TLR)-2 and TLR-4 were assessed. Changed function was measured from ongoing intracellular IL-10, IL-12p40, IL-6, and IL-13 production. RESULTS Acute UC colonic myeloid DC were producing more IL-10 and IL-12p40 than control DC (P = 0.01). In VSL#3-treated patients DC TLR-2 expression decreased (P < 0.05), IL-10 production increased and IL-12p40 production decreased (P < 0.005); 10/14 patients on VSL#3 showed a clinical response. Corticosteroids also resulted in increased IL-10 and reduced IL-12p40 production by DC. Conversely, in patients on placebo, TLR-2 expression and intensity of staining for IL-12p40 and IL-6 increased (all P < 0.05); 5/14 patients on placebo showed a clinical response (P = NS). CONCLUSIONS Despite small numbers of human colonic DC available, we showed that treatment of UC patients with probiotic VSL#3 and corticosteroids induced "favorable" intestinal DC function in vivo, increasing regulatory cytokines and lowering proinflammatory cytokines and TLR expression. These effects may contribute to therapeutic benefit.
Collapse
Affiliation(s)
- Siew C Ng
- Antigen Presentation Research Group, Faculty of Medicine, Imperial College London, Northwick Park and St Mark's Campus, Watford Road, Harrow, UK
| | | | | | | | | | | | | | | |
Collapse
|
46
|
Leal RF, Ayrizono MLS, Milanski M, Coope A, Fagundes JJ, Velloso LA, Coy CSR. Activation of signal transducer and activator of transcription-1 (STAT-1) and differential expression of interferon-gamma and anti-inflammatory proteins in pelvic ileal pouches for ulcerative colitis and familial adenomatous polyposis. Clin Exp Immunol 2010; 160:380-5. [PMID: 20345984 PMCID: PMC2883108 DOI: 10.1111/j.1365-2249.2009.04088.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/09/2009] [Indexed: 01/19/2023] Open
Abstract
Pouchitis after total rectocolectomy is the most common complication of ulcerative colitis (UC). The immunological mechanisms involved in the genesis of pouchitis are unclear. Therefore, we evaluated the inflammatory activity in normal ileal pouch mucosa by determining signal transducers and activators of transcription (STAT-1) activation and cytokine expression in patients operated for UC and familial adenomatous polyposis (FAP). Eighteen asymptomatic patients, who underwent total rectocolectomy and J pouch, were evaluated: nine with UC and nine with FAP. The activation of STAT-1 and cytokine expression were determined by immunoblot of total protein extracts from pouch mucosal biopsies. The absence of pouchitis was assessed by clinical, histological and endoscopic parameters, according to the Pouchitis Disease Activity Index. The patients were not receiving any medication. Analysis of variance (anova) and Tukey-Kramer's test were applied. The local ethical committee approved the study and informed consent was signed by all participants. STAT-1 activation was increased in UC when compared to FAP and controls (P < 0.05). Higher levels of interferon (IFN)-gamma expression were observed in UC patients when compared to the control group (P < 0.05), but were similar to FAP. In contrast, cytokine signalling (SOCS-3) and interleukin (IL)-10 expression were similar in all groups (P > 0.05). These findings could explain the higher susceptibility to this inflammatory complication in UC when compared to FAP. A tendency towards increased levels of IFN-gamma and STAT-1 in patients with UC, even without clinical and endoscopic evidence of pouchitis, was observed; studying inflammatory activity in asymptomatic ileal pouches may help understanding of the pathogenesis of pouchitis.
Collapse
Affiliation(s)
- R F Leal
- Coloproctology Unit, Surgery Department, University of Campinas (UNICAMP), Medical School, Sao Paulo, Brazil
| | | | | | | | | | | | | |
Collapse
|
47
|
Abstract
Restorative proctocolectomy with ileal pouch-anal anastomosis has become the surgical treatment of choice for most patients with ulcerative colitis who require surgery. Although the surgical procedure offers a cure in some patients, postoperative inflammatory and noninflammatory complications are common. Pouchitis is the most common long-term complication of the procedure. Pouchitis represents a spectrum of disease processes with heterogeneous risk factors, clinical phenotypes, natural history, and prognosis. Accurate diagnosis and classification are important for proper treatment and prognosis.
Collapse
Affiliation(s)
- Hao Wu
- Department of Gastroenterology, Zhongshan Hospital, Fudan University, Shanghai, China
| | | |
Collapse
|
48
|
Abstract
Restorative proctocolectomy with ileal pouch-anal anastomosis has become the surgical treatment of choice for most patients with ulcerative colitis who require surgery. Although the surgical procedure offers a cure in some patients, postoperative inflammatory and noninflammatory complications are common. Pouchitis is the most common long-term complication of the procedure. Pouchitis represents a spectrum of disease processes with heterogeneous risk factors, clinical phenotypes, natural history, and prognosis. Accurate diagnosis and classification are important for proper treatment and prognosis.
Collapse
Affiliation(s)
- Hao Wu
- Department of Gastroenterology, Zhongshan Hospital, Fudan University, Shanghai, China
| | | |
Collapse
|
49
|
Hörmannsperger G, Haller D. Molecular crosstalk of probiotic bacteria with the intestinal immune system: clinical relevance in the context of inflammatory bowel disease. Int J Med Microbiol 2009; 300:63-73. [PMID: 19828372 DOI: 10.1016/j.ijmm.2009.08.006] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
It is current knowledge that the intestinal microbiota plays a major role in the development and maintenance of intestinal health. Intestinal epithelial cells (IEC) constitute the interface between the gut lumen and the innate and adaptive immune system. To maintain intestinal homeostasis, the organized and diffuse compartments of the gut-associated lymphoid tissue have to process the continuously varying information at the interface between the luminal side and the host. Dysregulated intestinal immune responses towards commensal bacteria are an important factor in the pathogenesis of inflammatory bowel diseases (IBD). In contrast to the colitogenic effects of enteric bacteria, clinical and experimental studies showed that specific probiotic strains are protective in the context of chronic intestinal inflammation. Although the molecular understanding of bacteria-host interaction is improving, the anti-inflammatory mechanisms induced by these probiotic bacteria are just starting to be unraveled. The present review is meant to summarize and discuss the clinical relevance of probiotics, but it also seeks to give an overview about currently known probiotic mechanisms in the context of chronic intestinal inflammation with a focus on IEC.
Collapse
Affiliation(s)
- Gabriele Hörmannsperger
- Biofunctionality, ZIEL-Research Center for Nutrition and Food Science, CDD-Center for Diet and Disease, Technische Universität München, Am Forum 5, D-85350 Freising-Weihenstephan, Germany
| | | |
Collapse
|
50
|
MacDonald TT, Voessenkamper A, Di Sabatino A. Antigen presenting cells and T cell interactions in the gastrointestinal tract. Mol Nutr Food Res 2009; 53:947-51. [DOI: 10.1002/mnfr.200800192] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
|