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Neri M, Mewes JC, de Almeida FA, Stoychev S, Minarovic N, Charos A, Shea KM, Steuten LMG. Impact of including productivity costs in economic analyses of vaccines for C. difficile infections and infant respiratory syncytial virus, in a UK setting. COST EFFECTIVENESS AND RESOURCE ALLOCATION 2024; 22:34. [PMID: 38689331 PMCID: PMC11059668 DOI: 10.1186/s12962-024-00533-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 03/21/2024] [Indexed: 05/02/2024] Open
Abstract
OBJECTIVES It has been estimated that vaccines can accrue a relatively large part of their value from patient and carer productivity. Yet, productivity value is not commonly or consistently considered in health economic evaluations of vaccines in several high-income countries. To contribute to a better understanding of the potential impact of including productivity value on the expected cost-effectiveness of vaccination, we illustrate the extent to which the incremental costs would change with and without productivity value incorporated. METHODS For two vaccines currently under development, one against Cloistridioides difficile (C. difficile) infection and one against respiratory syncytial disease (RSV), we estimated their incremental costs with and without productivity value included and compared the results. RESULTS In this analysis, reflecting a UK context, a C. difficile vaccination programme would prevent £12.3 in productivity costs for every person vaccinated. An RSV vaccination programme would prevent £49 in productivity costs for every vaccinated person. CONCLUSIONS Considering productivity costs in future cost-effectiveness analyses of vaccines for C. difficile and RSV will contribute to better-informed reimbursement decisions from a societal perspective.
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Goodman C, Keating G, Georgousopoulou E, Hespe C, Levett K. Probiotics for the prevention of antibiotic-associated diarrhoea: a systematic review and meta-analysis. BMJ Open 2021; 11:e043054. [PMID: 34385227 PMCID: PMC8362734 DOI: 10.1136/bmjopen-2020-043054] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Abstract
OBJECTIVE To evaluate existing evidence for the use of probiotics in preventing antibiotic-associated diarrhoea (AAD) in adults. DESIGN Systematic review and meta-analysis of randomised controlled trials (RCTs). DATA SOURCES We performed a literature search of the electronic databases CINAHL Plus, EMBASE, MEDLINE (Ovid) and Web of Science from database inception to May 2021 as well as hand searching of trial registries and reference lists of related reviews. STUDY SELECTION Two reviewers identified whether RCTs met the following inclusion criteria: adult population to whom antibiotics were administered; a probiotic intervention; a placebo, alternative dose, alternative probiotic strain or no treatment control; and incidence of AAD as the outcome. DATA EXTRACTION AND SYNTHESIS Two reviewers independently collected data and assessed risk of bias using preconstructed data extraction forms. We used a random effects model for all analyses. Subgroup analyses were performed to evaluate species-specific and dose-specific response. RESULTS Forty-two studies (11,305 participants) were included in this review. The pooled analysis suggests that co-administration of probiotics with antibiotics reduces the risk of AAD in adults by 37% (risk ratio (RR)=0.63 (95% CI 0.54 to 0.73), p<0.00001). The overall quality of the evidence using the Grading of Recommendations, Assessment, Development and Evaluations (GRADE) criteria was found to be moderate. In subgroup analyses, high dose compared with low dose of the same probiotic demonstrated a positive protective effect (RR 0.54 (95% CI 0.38 to 0.76), p<0.01), and only certain species, mainly of the lactobacillus and bifidobacteria genera, were found to be effective. Studies with a low baseline AAD risk did not show any difference in risk but studies with moderate or high baseline AAD risk demonstrated a significant risk reduction. CONCLUSIONS Probiotics are effective for preventing AAD. Secondary analyses of higher dosages and certain species have shown increased effectiveness. Our results may not be applicable in clinical scenarios of lower baseline AAD risk.
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Affiliation(s)
- Clare Goodman
- National School of Medicine, The University of Notre Dame Australia, Sydney, New South Wales, Australia
| | - Georgia Keating
- Department of Pharmacy, Alice Springs Hospital, Alice Springs, Northern Territory, Australia
| | - Ekavi Georgousopoulou
- National School of Medicine, The University of Notre Dame Australia, Sydney, New South Wales, Australia
| | - Charlotte Hespe
- National School of Medicine, The University of Notre Dame Australia, Sydney, New South Wales, Australia
| | - Kate Levett
- National School of Medicine, The University of Notre Dame Australia, Sydney, New South Wales, Australia
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Lau VI, Cook DJ, Fowler R, Rochwerg B, Johnstone J, Lauzier F, Marshall JC, Basmaji J, Heels-Ansdell D, Thabane L, Xie F. Economic evaluation alongside the Probiotics to Prevent Severe Pneumonia and Endotracheal Colonization Trial (E-PROSPECT): study protocol. BMJ Open 2020; 10:e036047. [PMID: 32595159 PMCID: PMC7322334 DOI: 10.1136/bmjopen-2019-036047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
INTRODUCTION Ventilator-associated pneumonia (VAP) is a common healthcare-associated infection in the intensive care unit (ICU). Probiotics are defined as live microorganisms that may confer health benefits when ingested. Prior randomised trials suggest that probiotics may prevent infections such as VAP and Clostridioides difficile-associated diarrhoea (CDAD). PROSPECT (Probiotics to Prevent Severe Pneumonia and Endotracheal Colonization Trial) is a multicentre, double-blinded, randomised controlled trial comparing the efficacy of the probiotic Lactobacillus rhamnosus GG with usual care versus usual care without probiotics in preventing VAP and other clinically important outcomes in critically ill patients admitted to the ICU. METHODS AND ANALYSIS The objective of E-PROSPECT is to determine the incremental cost-effectiveness of L. rhamnosus GG plus usual care versus usual care without probiotics in critically ill patients. E-PROSPECT will be performed from the public healthcare payer's perspective over a time horizon from ICU admission to hospital discharge.We will determine probabilities of in-ICU and in-hospital events from all patients alongside PROSPECT. We will retrieve unit costs for each resource use item using jurisdiction-specific public databases, supplemented by individual site unit costs if such databases are unavailable. Direct costs will include medications, personnel costs, radiology/laboratory testing, operative/non-operative procedures and per-day hospital 'hoteling' costs not otherwise encompassed. The primary outcome is the incremental cost per VAP prevented between the two treatment groups. Other clinical events such as CDAD, antibiotic-associated diarrhoea and in-hospital mortality will be included as secondary outcomes. We will perform pre-specified subgroup analyses (medical/surgical/trauma; age; frailty status; antibiotic use; prevalent vs no prevalent pneumonia) and probabilistic sensitivity analyses for VAP, then generate confidence intervals using the non-parametric bootstrapping approach. ETHICS AND DISSEMINATION Study approval for E-PROSPECT was granted by the Hamilton Integrated Research Ethics Board of McMaster University on 29 July 2019. Informed consent was obtained from the patient or substitute decision-maker in PROSPECT. The findings of this study will be published in peer-reviewed journals. TRIAL REGISTRATION NUMBER NCT01782755; Pre-results.
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Affiliation(s)
- Vincent Issac Lau
- Department of Critical Care, University of Alberta Faculty of Medicine and Dentistry, Edmonton, Alberta, Canada
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Ontario, Canada
| | - Deborah J Cook
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Ontario, Canada
- Division of Critical Care, McMaster University, Hamilton, Ontario, Canada
| | - Robert Fowler
- Sunnybrook Health Sciences Institute, Sunnybrook Research Institute, Toronto, Ontario, Canada
| | - Bram Rochwerg
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Ontario, Canada
- Division of Critical Care, McMaster University, Hamilton, Ontario, Canada
| | - Jennie Johnstone
- Public Health Ontario, University of Toronto Dalla Lana School of Public Health, Toronto, Ontario, Canada
| | - François Lauzier
- Population Health and Optimal Health Practices Research Unit (Trauma-Emergency-Critical Care Medicine), Centre de Recherche du CHU de Québec-Université Laval, Quebec, Quebec, Canada
| | - John C Marshall
- Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - John Basmaji
- Department of Medicine, Division of Critical Care, Western University, London, Ontario, Canada
| | - Diane Heels-Ansdell
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Ontario, Canada
- Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada
| | - Lehana Thabane
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Ontario, Canada
- Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada
| | - Feng Xie
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Ontario, Canada
- Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada
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Effects of an orally supplemented probiotic on the autophagy protein LC3 and Beclin1 in placentas undergoing spontaneous delivery during normal pregnancy. BMC Pregnancy Childbirth 2020; 20:216. [PMID: 32295534 PMCID: PMC7161261 DOI: 10.1186/s12884-020-02905-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 03/27/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Probiotic supplementation has been shown to be beneficial and is now widely promoted as an auxiliary medicine for maternal health, but the underlying mechanism is still unclear. Thus, this study aimed to explore the effects of probiotic supplementation on the placental autophagy-related proteins LC3 and Beclin1. METHOD A population-based cohort of specimens was collected under sterile conditions from 37 healthy nulliparous pregnant women who underwent systemic examination and delivered at the First Affiliated Hospital of Jinan University (Guangzhou, China). At 32 weeks of gestation, the pregnant women in the probiotic group were orally supplemented with golden bifid, and the pregnant women in the control group received no probiotic. Pregnant women with pregnancy-associated complications were excluded in the follow-up period, and 25 pregnant women undergoing spontaneous delivery were enrolled. The placental tissue specimens were collected at term. Western blotting was used to detect the protein expression, and qRT-PCR was used to detect the mRNA expression of the placental autophagy-related proteins LC3 and Beclin1. RESULTS ①There was no significant difference in the expression levels of either LC3 or Beclin1 protein between the two groups (P > 0.05). ②Probiotic supplementation induced a modest but not significant decrease in the content of LC3-mRNA with a significant decrease in the content of Beclin1-mRNA (P < 0.05). CONCLUSION Our study indicates that probiotic supplementation may reduce Beclin1-mRNA levels.
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Lau VI, Rochwerg B, Xie F, Johnstone J, Basmaji J, Balakumaran J, Iansavichene A, Cook DJ. Probiotics in hospitalized adult patients: a systematic review of economic evaluations. Can J Anaesth 2020; 67:247-261. [PMID: 31721100 PMCID: PMC7222908 DOI: 10.1007/s12630-019-01525-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 09/05/2019] [Accepted: 09/06/2019] [Indexed: 12/29/2022] Open
Abstract
PURPOSE Probiotics may prevent healthcare-associated infections, such as ventilator-associated pneumonia, Clostridioides difficile-associated diarrhea, and other adverse outcomes. Despite their potential benefits, there are no summative data examining the cost-effectiveness of probiotics in hospitalized patients. This systematic review summarized studies evaluating the economic impact of using probiotics in hospitalized adult patients. METHODS We searched MEDLINE, EMBASE, CENTRAL, ACP Journal Club, and other EBM reviews (inception to January 31, 2019) for health economics evaluations examining the use of probiotics in hospitalized adults. Independently and in duplicate, we extracted data study characteristics, risk of bias, effectiveness and total costs (medications, diagnostics/procedures, devices, personnel, hospital) associated with healthcare-associated infections (ventilator-associated pneumonia, Clostridioides difficile-associated diarrhea and antibiotic-associated diarrhea). We used Grading of Recommendations Assessment, Development and Evaluation methods to assess certainty in the overall cost-effectiveness evidence. RESULTS Of 721 citations identified, we included seven studies. For the clinical outcomes of interest, there was one randomized-controlled trial (RCT)-based health economic evaluation, and six model-based health economic evaluations. Probiotics showed favourable cost-effectiveness in six of seven (86%) economic evaluations. Three of the seven studies were manufacturer-supported, all which suggested cost-effectiveness. Certainty of cost-effectiveness evidence was very low because of risk of bias, imprecision, and inconsistency. CONCLUSION Probiotics may be an economically attractive intervention for preventing ventilator-associated pneumonia, Clostridioides difficile-associated diarrhea, and antibiotic-associated diarrhea in hospitalized adult patients. Nevertheless, certainty about their cost-effectiveness evidence is very low. Future RCTs examining probiotics should incorporate cost data to inform bedside practice, clinical guidelines, and healthcare policy. TRIAL REGISTRATION PROSPERO CRD42019129929; Registered 25 April, 2019.
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Affiliation(s)
- Vincent I Lau
- Department of Medicine, Division of Critical Care Medicine, Western University, London, ON, Canada.
- Department of Health Research Methods, Evidence & Impact, McMaster University, Hamilton, ON, Canada.
- Department of Medicine, Division of Critical Care, Schulich School of Medicine and Dentistry, Western University, 800 Commissioners Road East, London, ON, Canada.
| | - Bram Rochwerg
- Department of Medicine, Division of Critical Care Medicine, McMaster University, Hamilton, ON, Canada
- Department of Health Research Methods, Evidence & Impact, McMaster University, Hamilton, ON, Canada
| | - Feng Xie
- Department of Health Research Methods, Evidence & Impact, McMaster University, Hamilton, ON, Canada
| | - Jennie Johnstone
- Public Health Ontario, Toronto, ON, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
| | - John Basmaji
- Department of Medicine, Division of Critical Care Medicine, Western University, London, ON, Canada
| | - Jana Balakumaran
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, Canada
| | | | - Deborah J Cook
- Department of Medicine, Division of Critical Care Medicine, McMaster University, Hamilton, ON, Canada
- Department of Health Research Methods, Evidence & Impact, McMaster University, Hamilton, ON, Canada
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Whittemore JC, Stokes JE, Laia NL, Price JM, Suchodolski JS. Short and long-term effects of a synbiotic on clinical signs, the fecal microbiome, and metabolomic profiles in healthy research cats receiving clindamycin: a randomized, controlled trial. PeerJ 2018; 6:e5130. [PMID: 30038854 PMCID: PMC6054061 DOI: 10.7717/peerj.5130] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Accepted: 06/08/2018] [Indexed: 12/18/2022] Open
Abstract
Background Antibiotic-associated gastrointestinal signs (AAGS) occur commonly in cats. Co-administration of synbiotics is associated with decreased AAGS in people, potentially due to stabilization of the fecal microbiome and metabolome. The purpose of this double-blinded randomized-controlled trial was to compare AAGS and the fecal microbiome and metabolome between healthy cats that received clindamycin with a placebo or synbiotic. Methods 16 healthy domestic shorthair cats from a research colony were randomized to receive 150 mg clindamycin with either a placebo (eight cats) or commercially-available synbiotic (eight cats) once daily for 21 days with reevaluation 603 days thereafter. All cats ate the same diet. Food consumption, vomiting, and fecal score were recorded. Fecal samples were collected daily on the last three days of baseline (days 5–7), treatment (26–28), and recovery (631–633). Sequencing of 16S rRNA genes and gas chromatography time-of-flight mass spectrometry was performed. Clinical signs, alpha and beta diversity metrics, dysbiosis indices, proportions of bacteria groups, and metabolite profiles were compared between treatment groups using repeated measures ANOVAs. Fecal metabolite pathway analysis was performed. P < 0.05 was considered significant. The Benjamini & Hochberg’s False Discovery Rate was used to adjust for multiple comparisons. Results Median age was six and five years, respectively, for cats in the placebo and synbiotic groups. Hyporexia, vomiting, diarrhea, or some combination therein were induced in all cats. Though vomiting was less in cats receiving a synbiotic, the difference was not statistically significant. Bacterial diversity decreased significantly on days 26–28 in both treatment groups. Decreases in Actinobacteria (Bifidobacterium, Collinsella, Slackia), Bacteriodetes (Bacteroides), Lachnospiraceae (Blautia, Coprococcus, Roseburia), Ruminococcaceae (Faecilobacterium, Ruminococcus), and Erysipelotrichaceae (Bulleidia, [Eubacterium]) and increases in Clostridiaceae (Clostridium) and Proteobacteria (Aeromonadales, Enterobacteriaceae) occurred in both treatment groups, with incomplete normalization by days 631–633. Derangements in short-chain fatty acid, bile acid, indole, sphingolipid, benzoic acid, cinnaminic acid, and polyamine profiles also occurred, some of which persisted through the terminal sampling timepoint and differed between treatment groups. Discussion Cats administered clindamycin commonly develop AAGS, as well as short- and long-term dysbiosis and alterations in fecal metabolites. Despite a lack of differences in clinical signs between treatment groups, significant differences in their fecal metabolomic profiles were identified. Further investigation is warranted to determine whether antibiotic-induced dysbiosis is associated with an increased risk of future AAGS or metabolic diseases in cats and whether synbiotic administration ameliorates this risk.
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Affiliation(s)
- Jacqueline C Whittemore
- Department of Small Animal Clinical Sciences, University of Tennessee-Knoxville, Knoxville, TN, United States of America
| | - Jennifer E Stokes
- Department of Small Animal Clinical Sciences, University of Tennessee-Knoxville, Knoxville, TN, United States of America
| | - Nicole L Laia
- Department of Small Animal Clinical Sciences, University of Tennessee-Knoxville, Knoxville, TN, United States of America
| | - Joshua M Price
- Office of Information Technology, University of Tennessee-Knoxville, Knoxville, TN, United States of America
| | - Jan S Suchodolski
- The Gastrointestinal Laboratory, Small Animal Clinical Sciences, Texas A&M University, College Station, TX, United States of America
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Reclamation of Herb Residues Using Probiotics and Their Therapeutic Effect on Diarrhea. Mediators Inflamm 2018; 2017:4265898. [PMID: 29317795 PMCID: PMC5727800 DOI: 10.1155/2017/4265898] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2017] [Revised: 08/03/2017] [Accepted: 10/11/2017] [Indexed: 12/03/2022] Open
Abstract
Residues from herbal medicine processing in pharmaceutical plants create a large amount of waste (herb residues), which consists mainly of environmental pollution and medicinal waste. In order to resolve this problem, probiotics of Bacillus (B.) subtilis, Aspergillus (A.) oryzae, and Lactobacillus (L.) plantarum M3 are selected to reuse herb residue of Jianweixiaoshi tablets (JT), and an antibiotic-associated diarrhea (AAD) mouse model was established to evaluate the therapeutic effects of the herb residue fermentation supernatant. Our results indicated that the fermentation supernatant had scavenged 77.8% of 2,2-diphenyl-1-picrylhydrazyl (DPPH), 78% of O2•−, 36.7% of •OH, 39% of Fe2+ chelation, and 716 mg/L reducing power. The inhibition zones for Salmonella (S.) typhimurium, S. enteritidis, Shigella (Sh.) flexneri, Escherichia (E.) coli, Listeria (L.) monocytogenes, Sh. dysenteriae 301, and Staphylococcus (S.) aureus were 17, 14, 19, 18, 20, 19, and 20 mm, respectively. The in vivo results indicated that the fermentation supernatant resulted in a high diarrhea inhibition rate (56%, p < 0.05), greatly enhanced the disruption of bacterial diversity caused by antibiotics, and restored the dominant position of L. johnsonii in the treatment and recovery stages. Therefore, the combination of the herb residue and probiotics suggests a potential to explore conversion of these materials for the possible development of therapies for AAD.
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Mailänder-Sánchez D, Braunsdorf C, Grumaz C, Müller C, Lorenz S, Stevens P, Wagener J, Hebecker B, Hube B, Bracher F, Sohn K, Schaller M. Antifungal defense of probiotic Lactobacillus rhamnosus GG is mediated by blocking adhesion and nutrient depletion. PLoS One 2017; 12:e0184438. [PMID: 29023454 PMCID: PMC5638248 DOI: 10.1371/journal.pone.0184438] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 08/23/2017] [Indexed: 01/01/2023] Open
Abstract
Candida albicans is an inhabitant of mucosal surfaces in healthy individuals but also the most common cause of fungal nosocomial blood stream infections, associated with high morbidity and mortality. As such life-threatening infections often disseminate from superficial mucosal infections we aimed to study the use of probiotic Lactobacillus rhamnosus GG (LGG) in prevention of mucosal C. albicans infections. Here, we demonstrate that LGG protects oral epithelial tissue from damage caused by C. albicans in our in vitro model of oral candidiasis. Furthermore, we provide insights into the mechanisms behind this protection and dissect direct and indirect effects of LGG on C. albicans pathogenicity. C. albicans viability was not affected by LGG. Instead, transcriptional profiling using RNA-Seq indicated dramatic metabolic reprogramming of C. albicans. Additionally, LGG had a significant impact on major virulence attributes, including adhesion, invasion, and hyphal extension, whose reduction, consequently, prevented epithelial damage. This was accompanied by glucose depletion and repression of ergosterol synthesis, caused by LGG, but also due to blocked adhesion sites. Therefore, LGG protects oral epithelia against C. albicans infection by preventing fungal adhesion, invasion and damage, driven, at least in parts, by metabolic reprogramming due to nutrient limitation caused by LGG.
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Affiliation(s)
| | | | | | - Christoph Müller
- Department of Pharmacy, Center for Drug Research, Ludwig-Maximilians University, Munich, Germany
| | | | - Philip Stevens
- Center for Integrative Bioinformatics Vienna, Max F. Perutz Laboratories, University of Vienna, Medical University of Vienna, Vienna, Austria
- IGVP, University of Stuttgart, Stuttgart, Germany
| | - Jeanette Wagener
- Department of Dermatology, University Hospital Tübingen, Germany
| | - Betty Hebecker
- Department of Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural Product Research and Infection Biology–Hans Knoell Institute Jena (HKI), Jena, Germany
- Center for Sepsis Control and Care (CSCC), Jena, Germany
| | - Bernhard Hube
- Department of Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural Product Research and Infection Biology–Hans Knoell Institute Jena (HKI), Jena, Germany
- Center for Sepsis Control and Care (CSCC), Jena, Germany
- Friedrich Schiller University, Jena, Germany
| | - Franz Bracher
- Department of Pharmacy, Center for Drug Research, Ludwig-Maximilians University, Munich, Germany
| | - Kai Sohn
- Fraunhofer IGB, Stuttgart, Germany
| | - Martin Schaller
- Department of Dermatology, University Hospital Tübingen, Germany
- * E-mail:
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Stokes JE, Price JM, Whittemore JC. Randomized, Controlled, Crossover trial of Prevention of Clindamycin-Induced Gastrointestinal Signs Using a Synbiotic in Healthy Research Cats. J Vet Intern Med 2017; 31:1406-1413. [PMID: 28755457 PMCID: PMC5598878 DOI: 10.1111/jvim.14795] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 05/11/2017] [Accepted: 06/27/2017] [Indexed: 12/23/2022] Open
Abstract
Background Synbiotics often are prescribed to limit antibiotic‐associated gastrointestinal signs (AAGS) in cats, but data to support this recommendation are lacking. Objective To determine whether synbiotic co‐administration mitigates AAGS in healthy research cats treated with clindamycin. Animals 16 healthy research cats. Methods A randomized, double‐blinded, placebo‐controlled, 2‐way, 2‐period, crossover study with a 6‐week washout was performed. Each study period consisted of a 1‐week baseline and a 3‐week treatment period. Cats received 75 mg clindamycin with food once daily for 3 weeks, followed 1 hour later by either 2 capsules of a synbiotic or placebo. Food consumption, vomiting, fecal score, and completion of treatment were compared using repeated measures split plot or crossover designs with covariates, with P < 0.05 considered significant. Results Cats that received the synbiotic were more likely to complete treatment in period 1 (100% vs. 50%, P = 0.04). Cats vomited less when receiving the synbiotic but this was not significant, but there were significant period effects (F‐value = 11.4, P < 0.01). Cats had higher food intake while receiving the synbiotic (F‐value = 31.1, P < 0.01) despite period effects (F‐value = 8.6, P < 0.01). There was no significant effect of treatment on fecal scores, which significantly increased over time (F‐value = 17.9, P < 0.01). Conclusions and Clinical Importance Administration of a synbiotic 1 hour after clindamycin administration decreased hyporexia and vomiting in healthy cats. Additionally, significant period effects suggest that clinical benefits of synbiotic administration persist for at least 6 weeks after discontinuation, decreasing the severity of AAGS in cats that subsequently received clindamycin with placebo. Unlike in people, synbiotic administration did not decrease antibiotic‐associated diarrhea.
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Affiliation(s)
- J E Stokes
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, TN
| | - J M Price
- Office of Information Technology, University of Tennessee, Knoxville, TN
| | - J C Whittemore
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, TN
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Shen NT, Leff JA, Schneider Y, Crawford CV, Maw A, Bosworth B, Simon MS. Cost-Effectiveness Analysis of Probiotic Use to Prevent Clostridium difficile Infection in Hospitalized Adults Receiving Antibiotics. Open Forum Infect Dis 2017; 4:ofx148. [PMID: 29230429 PMCID: PMC5692276 DOI: 10.1093/ofid/ofx148] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 07/17/2017] [Indexed: 02/07/2023] Open
Abstract
Background Systematic reviews with meta-analyses and meta-regression suggest that timely probiotic use can prevent Clostridium difficile infection (CDI) in hospitalized adults receiving antibiotics, but the cost effectiveness is unknown. We sought to evaluate the cost effectiveness of probiotic use for prevention of CDI versus no probiotic use in the United States. Methods We programmed a decision analytic model using published literature and national databases with a 1-year time horizon. The base case was modeled as a hypothetical cohort of hospitalized adults (mean age 68) receiving antibiotics with and without concurrent probiotic administration. Projected outcomes included quality-adjusted life-years (QALYs), costs (2013 US dollars), incremental cost-effectiveness ratios (ICERs; $/QALY), and cost per infection avoided. One-way, two-way, and probabilistic sensitivity analyses were conducted, and scenarios of different age cohorts were considered. The ICERs less than $100000 per QALY were considered cost effective. Results Probiotic use dominated (more effective and less costly) no probiotic use. Results were sensitive to probiotic efficacy (relative risk <0.73), the baseline risk of CDI (>1.6%), the risk of probiotic-associated bactermia/fungemia (<0.26%), probiotic cost (<$130), and age (>65). In probabilistic sensitivity analysis, at a willingness-to-pay threshold of $100000/QALY, probiotics were the optimal strategy in 69.4% of simulations. Conclusions Our findings suggest that probiotic use may be a cost-effective strategy to prevent CDI in hospitalized adults receiving antibiotics age 65 or older or when the baseline risk of CDI exceeds 1.6%.
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Affiliation(s)
- Nicole T Shen
- Division of Gastroenterology and Hepatology, Department of Medicine
| | - Jared A Leff
- Department of Healthcare Policy and Research, and
| | | | - Carl V Crawford
- Division of Gastroenterology and Hepatology, Department of Medicine
| | - Anna Maw
- Hospitalist Medicine Section, Division of General Internal Medicine, Department of Medicine, University of Colorado, Denver
| | - Brian Bosworth
- Division of Gastroenterology, Department of Medicine, New York University, New York
| | - Matthew S Simon
- Department of Healthcare Policy and Research, and.,Division of Infectious Diseases, Department of Medicine, Weill Cornell Medical College, New York, New York
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Shen NT, Maw A, Tmanova LL, Pino A, Ancy K, Crawford CV, Simon MS, Evans AT. Timely Use of Probiotics in Hospitalized Adults Prevents Clostridium difficile Infection: A Systematic Review With Meta-Regression Analysis. Gastroenterology 2017; 152:1889-1900.e9. [PMID: 28192108 DOI: 10.1053/j.gastro.2017.02.003] [Citation(s) in RCA: 176] [Impact Index Per Article: 25.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 01/28/2017] [Accepted: 02/03/2017] [Indexed: 12/11/2022]
Abstract
BACKGROUND & AIMS Systematic reviews have provided evidence for the efficacy of probiotics in preventing Clostridium difficile infection (CDI), but guidelines do not recommend probiotic use for prevention of CDI. We performed an updated systematic review to help guide clinical practice. METHODS We searched MEDLINE, EMBASE, International Journal of Probiotics and Prebiotics, and The Cochrane Library databases for randomized controlled trials evaluating use of probiotics and CDI in hospitalized adults taking antibiotics. Two reviewers independently extracted data and assessed risk of bias and overall quality of the evidence. Primary and secondary outcomes were incidence of CDI and adverse events, respectively. Secondary analyses examined the effects of probiotic species, dose, timing, formulation, duration, and study quality. RESULTS We analyzed data from 19 published studies, comprising 6261 subjects. The incidence of CDI in the probiotic cohort, 1.6% (54 of 3277), was lower than of controls, 3.9% (115 of 2984) (P < .001). The pooled relative risk of CDI in probiotic users was 0.42 (95% confidence interval, 0.30-0.57; I2 = 0.0%). Meta-regression analysis demonstrated that probiotics were significantly more effective if given closer to the first antibiotic dose, with a decrement in efficacy for every day of delay in starting probiotics (P = .04); probiotics given within 2 days of antibiotic initiation produced a greater reduction of risk for CDI (relative risk, 0.32; 95% confidence interval, 0.22-0.48; I2 = 0%) than later administration (relative risk, 0.70; 95% confidence interval, 0.40-1.23; I2 = 0%) (P = .02). There was no increased risk for adverse events among patients given probiotics. The overall quality of the evidence was high. CONCLUSIONS In a systematic review with meta-regression analysis, we found evidence that administration of probiotics closer to the first dose of antibiotic reduces the risk of CDI by >50% in hospitalized adults. Future research should focus on optimal probiotic dose, species, and formulation. Systematic Review Registration: PROSPERO CRD42015016395.
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Affiliation(s)
- Nicole T Shen
- Division of Gastroenterology and Hepatology, Weill Department of Medicine, Weill Cornell Medicine, New York, New York.
| | - Anna Maw
- Hospitalist Medicine Section, Division of General Internal Medicine, Department of Medicine, University of Colorado, Denver, Colorado
| | - Lyubov L Tmanova
- Samuel J. Wood Library and CV Starr Biomedical Information Center, Weill Cornell Medical College, New York, New York
| | - Alejandro Pino
- NewYork-Presbyterian-Weill Cornell Medical Center, New York, New York
| | - Kayley Ancy
- NewYork-Presbyterian-Weill Cornell Medical Center, New York, New York
| | - Carl V Crawford
- Division of Gastroenterology and Hepatology, Weill Department of Medicine, Weill Cornell Medicine, New York, New York
| | - Matthew S Simon
- Section of Hospital Medicine, Division of General Internal Medicine, Weill Department of Medicine, Weill Cornell Medicine, New York, New York; Division of Infectious Diseases, Weill Department of Medicine, Weill Cornell Medicine, New York, New York
| | - Arthur T Evans
- Section of Hospital Medicine, Division of General Internal Medicine, Weill Department of Medicine, Weill Cornell Medicine, New York, New York
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Wu Y, Wang Y, Zou H, Wang B, Sun Q, Fu A, Wang Y, Wang Y, Xu X, Li W. Probiotic Bacillus amyloliquefaciens SC06 Induces Autophagy to Protect against Pathogens in Macrophages. Front Microbiol 2017; 8:469. [PMID: 28382029 PMCID: PMC5360707 DOI: 10.3389/fmicb.2017.00469] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Accepted: 03/07/2017] [Indexed: 01/25/2023] Open
Abstract
Probiotics are increasingly applied in popularity in both humans and animals. Decades of research has revealed their beneficial effects, including the immune modulation in intestinal pathogens inhibition. Autophagy—a cellular process that involves the delivery of cytoplasmic proteins and organelles to the lysosome for degradation and recirculation—is essential to protect cells against bacterial pathogens. However, the mechanism of probiotics-mediated autophagy and its role in the elimination of pathogens are still unknown. Here, we evaluated Bacillus amyloliquefaciens SC06 (Ba)-induced autophagy and its antibacterial activity against Escherichia coli (E. coli) in murine macrophage cell line RAW264.7 cells. Western blotting and confocal laser scanning analysis showed that Ba activated autophagy in a dose- and time-dependent manner. Ba-induced autophagy was found to play a role in the elimination of intracellular bacteria when RAW264.7 cells were challenged with E. coli. Ba induced autophagy by increasing the expression of Beclin1 and Atg5-Atg12-Atg16 complex, but not the AKT/mTOR signaling pathway. Moreover, Ba pretreatment attenuated the activation of JNK in RAW264.7 cells during E. coli infection, further indicating a protective role for probiotics via modulating macrophage immunity. The above findings highlight a novel mechanism underlying the antibacterial activity of probiotics. This study enriches the current knowledge on probiotics-mediated autophagy, and provides a new perspective on the prevention of bacterial infection in intestine, which further the application of probiotics in food products.
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Affiliation(s)
- Yanping Wu
- Key Laboratory of Molecular Animal Nutrition of Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University Hangzhou, China
| | - Yang Wang
- Key Laboratory of Molecular Animal Nutrition of Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University Hangzhou, China
| | - Hai Zou
- Department of Cardiology, Zhejiang Provincial People's Hospital Hangzhou, China
| | - Baikui Wang
- Key Laboratory of Molecular Animal Nutrition of Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University Hangzhou, China
| | - Qiming Sun
- Department of Biochemistry, School of Medicine, Zhejiang University Hangzhou, China
| | - Aikun Fu
- Key Laboratory of Molecular Animal Nutrition of Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University Hangzhou, China
| | - Yuanyuan Wang
- Key Laboratory of Molecular Animal Nutrition of Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University Hangzhou, China
| | - Yibing Wang
- Key Laboratory of Molecular Animal Nutrition of Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University Hangzhou, China
| | - Xiaogang Xu
- Key Laboratory of Molecular Animal Nutrition of Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University Hangzhou, China
| | - Weifen Li
- Key Laboratory of Molecular Animal Nutrition of Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University Hangzhou, China
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Vitetta L, Coulson S, Thomsen M, Nguyen T, Hall S. Probiotics, D-Lactic acidosis, oxidative stress and strain specificity. Gut Microbes 2017; 8:311-322. [PMID: 28080206 PMCID: PMC5570418 DOI: 10.1080/19490976.2017.1279379] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
The existence of an implicit living microscopic world, composed primarily of bacteria, has been known for centuries. The exact mechanisms that govern the contribution of bacteria to human health and disease have only recently become the subject of intense research efforts. Within this very evident shift in paradigms, the rational design of probiotic formulations has led to the creation of an industry that seeks to progress the engineering of probiotic bacteria that produce metabolites that may enhance human host health and prevent disease. The promotion of probiotics is often made in the absence of quality scientific and clinically plausible data. The latest incursions into the probiotic market of claims have posited the amelioration of oxidative stress via potent antioxidant attributes or limiting the administration of probiotics to those species that do not produce D-Lactic acid (i.e., claims that D-Lactic acid acidosis is linked to chronic health conditions) or are strain-specific (shaping an industry point of difference) for appraising a therapeutic effect. Evidence-based research should guide clinical practice, as there is no place in science and medicine that supports unsubstantiated claims. Extravagant industry based notions continue to fuel the imprimatur of distrust and skepticism that is leveled by scientists and clinicians at an industry that is already rife with scientific and medical distrust and questionable views on probiotics. Ignoring scientifically discordant data, when sorting through research innovations and false leads relevant to the actions of probiotics, drives researcher discomfit and keeps the bar low, impeding the progress of knowledge. Biologically plausible posits are obligatory in any research effort; companies formulating probiotics often exhibit a lack of analytical understanding that then fuels questionable investigations failing to build on research capacity.
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Affiliation(s)
- Luis Vitetta
- Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia,Medlab Clinical Ltd, Sydney, New South Wales, Australia,CONTACT Professor Luis Vitetta ; Medlab Clinical Ltd and, The University of Sydney, Sydney, Australia. 2015
| | - Samantha Coulson
- Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia
| | - Michael Thomsen
- Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia,Medlab Clinical Ltd, Sydney, New South Wales, Australia
| | - Tony Nguyen
- Medlab Clinical Ltd, Sydney, New South Wales, Australia
| | - Sean Hall
- Medlab Clinical Ltd, Sydney, New South Wales, Australia
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Cost-Effectiveness Analysis of the Use of Probiotics for the Prevention of Clostridium difficile-Associated Diarrhea in a Provincial Healthcare System. Infect Control Hosp Epidemiol 2016; 37:1079-86. [PMID: 27377992 DOI: 10.1017/ice.2016.134] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
OBJECTIVE To conduct a full economic evaluation assessing the costs and consequences related to probiotic use for the primary prevention of Clostridium difficile-associated diarrhea (CDAD). DESIGN Cost-effectiveness analysis using decision analytic modeling. METHODS A cost-effectiveness analysis was used to evaluate the risk of CDAD and the costs of receiving oral probiotics versus not over a time horizon of 30 days. The target population modeled was all adult inpatients receiving any therapeutic course of antibiotics from a publicly funded healthcare system perspective. Effectiveness estimates were based on a recent systematic review of probiotics for the primary prevention of CDAD. Additional estimates came from local data and the literature. Sensitivity analyses were conducted to assess how plausible changes in variables impacted the results. RESULTS Treatment with oral probiotics led to direct costs of CDN $24 per course of treatment per patient. On average, patients treated with oral probiotics had a lower overall cost compared with usual care (CDN $327 vs $845). The risk of CDAD was reduced from 5.5% in those not receiving oral probiotics to 2% in those receiving oral probiotics. These results were robust to plausible variation in all estimates. CONCLUSIONS Oral probiotics as a preventive strategy for CDAD resulted in a lower risk of CDAD as well as cost-savings. The cost-savings may be greater in other healthcare systems that experience a higher incidence and cost associated with CDAD. Infect Control Hosp Epidemiol 2016;37:1079-1086.
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Nuijten MJC, Keller JJ, Visser CE, Redekop K, Claassen E, Speelman P, Pronk MH. Cost-effectiveness in Clostridium difficile treatment decision-making. World J Clin Cases 2015; 3:935-941. [PMID: 26601096 PMCID: PMC4644895 DOI: 10.12998/wjcc.v3.i11.935] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Accepted: 08/07/2015] [Indexed: 02/05/2023] Open
Abstract
AIM: To develop a framework for the clinical and health economic assessment for management of Clostridium difficile infection (CDI).
METHODS: CDI has vast economic consequences emphasizing the need for innovative and cost effective solutions, which were aim of this study. A guidance model was developed for coverage decisions and guideline development in CDI. The model included pharmacotherapy with oral metronidazole or oral vancomycin, which is the mainstay for pharmacological treatment of CDI and is recommended by most treatment guidelines.
RESULTS: A design for a patient-based cost-effectiveness model was developed, which can be used to estimate the cost-effectiveness of current and future treatment strategies in CDI. Patient-based outcomes were extrapolated to the population by including factors like, e.g., person-to-person transmission, isolation precautions and closing and cleaning wards of hospitals.
CONCLUSION: The proposed framework for a population-based CDI model may be used for clinical and health economic assessments of CDI guidelines and coverage decisions for emerging treatments for CDI.
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Mandal SM, Silva ON, Franco OL. Recombinant probiotics with antimicrobial peptides: a dual strategy to improve immune response in immunocompromised patients. Drug Discov Today 2014; 19:1045-50. [PMID: 24881782 DOI: 10.1016/j.drudis.2014.05.019] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Revised: 04/18/2014] [Accepted: 05/21/2014] [Indexed: 12/12/2022]
Abstract
Bacterial infectious diseases are currently a serious health problem, especially in patients compromised by illness or those receiving immune-suppressant drugs. In this context, it is not only essential to improve the understanding of infectious mechanisms and host response but also to discover novel therapies with extreme urgency. Probiotics and antimicrobial peptides are also favorably viewed as novel strategies in the control of resistant bacteria. The present review will shed some light on the use of probiotic microorganisms expressing antimicrobial peptides as a dual therapy to control bacterial infectious diseases.
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Affiliation(s)
- Santi M Mandal
- Central Research Facility, Indian Institute of Technology Kharagpur, Kharagpur 721302, WB, India
| | - Osmar N Silva
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Centro de Análises, Proteômicas e Bioquímicas, Universidade Católica de Brasília, Brazil; Departamento de Biologia, Programa de Pós-Graduação em Genética e Biotecnologia, Universidade Federal de Juiz de Fora, Campus Universitário, 36036-900, Martelos, Juiz de Fora-MG, Brazil
| | - Octavio L Franco
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Centro de Análises, Proteômicas e Bioquímicas, Universidade Católica de Brasília, Brazil; Departamento de Biologia, Programa de Pós-Graduação em Genética e Biotecnologia, Universidade Federal de Juiz de Fora, Campus Universitário, 36036-900, Martelos, Juiz de Fora-MG, Brazil.
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17
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Claassen E. Cost-benefit relation of diet and probiotics in iatrogenic bowel irregularity (IBI). Front Pharmacol 2014; 5:14. [PMID: 24596557 PMCID: PMC3926650 DOI: 10.3389/fphar.2014.00014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Accepted: 01/23/2014] [Indexed: 12/20/2022] Open
Affiliation(s)
- Eric Claassen
- Department of Virology, Erasmus Medical Center Rotterdam, Netherlands ; Athena Institute, Vrije Universiteit Amsterdam, Netherlands
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