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Lin Q, Dorsett Y, Mirza A, Tremlett H, Piccio L, Longbrake EE, Choileain SN, Hafler DA, Cox LM, Weiner HL, Yamamura T, Chen K, Wu Y, Zhou Y. Meta-analysis identifies common gut microbiota associated with multiple sclerosis. Genome Med 2024; 16:94. [PMID: 39085949 PMCID: PMC11293023 DOI: 10.1186/s13073-024-01364-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 07/12/2024] [Indexed: 08/02/2024] Open
Abstract
BACKGROUND Previous studies have identified a diverse group of microbial taxa that differ between patients with multiple sclerosis (MS) and the healthy population. However, interpreting findings on MS-associated microbiota is challenging, as there is no true consensus. It is unclear whether there is gut microbiota commonly altered in MS across studies. METHODS To answer this, we performed a meta-analysis based on the 16S rRNA gene sequencing data from seven geographically and technically diverse studies comprising a total of 524 adult subjects (257 MS and 267 healthy controls). Analysis was conducted for each individual study after reprocessing the data and also by combining all data together. The blocked Wilcoxon rank-sum test and linear mixed-effects regression were used to identify differences in microbial composition and diversity between MS and healthy controls. Network analysis was conducted to identify bacterial correlations. A leave-one-out sensitivity analysis was performed to ensure the robustness of the findings. RESULTS The microbiome community structure was significantly different between studies. Re-analysis of data from individual studies revealed a lower relative abundance of Prevotella in MS across studies, compared to controls. Meta-analysis found that although alpha and beta diversity did not differ between MS and controls, a higher abundance of Actinomyces and a lower abundance of Faecalibacterium were reproducibly associated with MS. Additionally, network analysis revealed that the recognized negative Bacteroides-Prevotella correlation in controls was disrupted in patients with MS. CONCLUSIONS Our meta-analysis identified common gut microbiota associated with MS across geographically and technically diverse studies.
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Affiliation(s)
- Qingqi Lin
- Department of Computer Science and Engineering, University of Connecticut, Storrs, CT, USA
- Department of Medicine, University of Connecticut Health Center, Farmington, CT, USA
| | - Yair Dorsett
- Department of Medicine, University of Connecticut Health Center, Farmington, CT, USA
| | - Ali Mirza
- Department of Medicine, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Helen Tremlett
- Department of Medicine, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Laura Piccio
- Department of Neurology, Washington University School of Medicine, St. Louis, MO, USA
- Brain and Mind Centre, School of Medical Sciences, University of Sydney, Sydney, New South Wales, Australia
| | - Erin E Longbrake
- Departments of Neurology and Immunobiology, Yale University School of Medicine, New Haven, CT, 06511, USA
| | - Siobhan Ni Choileain
- Departments of Neurology and Immunobiology, Yale University School of Medicine, New Haven, CT, 06511, USA
| | - David A Hafler
- Departments of Neurology and Immunobiology, Yale University School of Medicine, New Haven, CT, 06511, USA
| | - Laura M Cox
- Ann Romney Center for Neurologic Diseases, Harvard Medical School, Brigham & Women's Hospital, Boston, MA, 02115, USA
| | - Howard L Weiner
- Ann Romney Center for Neurologic Diseases, Harvard Medical School, Brigham & Women's Hospital, Boston, MA, 02115, USA
| | - Takashi Yamamura
- Department of Immunology, National Institute of Neuroscience, Tokyo, Japan
| | - Kun Chen
- Department of Statistics, University of Connecticut, Storrs, CT, USA
| | - Yufeng Wu
- Department of Computer Science and Engineering, University of Connecticut, Storrs, CT, USA
| | - Yanjiao Zhou
- Department of Medicine, University of Connecticut Health Center, Farmington, CT, USA.
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Ouranos K, Gardikioti A, Bakaloudi DR, Mylona EK, Shehadeh F, Mylonakis E. Association of the Streptococcus bovis/Streptococcus equinus Complex With Colorectal Neoplasia: A Systematic Review and Meta-analysis. Open Forum Infect Dis 2023; 10:ofad547. [PMID: 38023558 PMCID: PMC10655943 DOI: 10.1093/ofid/ofad547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 10/30/2023] [Indexed: 12/01/2023] Open
Abstract
Background Invasive infection with Streptococcus bovis/Streptococcus equinus complex (SBSEC) bacteria is associated with underlying colorectal neoplasia. However, the link between intestinal or fecal colonization with SBSEC isolates or antibody responses to SBSEC members and colorectal cancer is not thoroughly investigated in the literature. Methods We searched the PubMed, EMBASE, and Web of Science databases for case-control studies as well as retrospective or prospective cohort studies reporting an association between SBSEC bacteria and colorectal neoplasia. Results We identified 22 studies (15 case-control and 7 cohort) that met our inclusion criteria. Among the cohort studies, patients with SBSEC bacteremia were 3.73 times more likely to have underlying colorectal cancer compared with individuals with no bacteremia (relative risk [RR], 3.73; 95% CI, 2.79-5.01), whereas the risk of underlying colorectal adenoma in patients with SBSEC bacteremia was not significantly increased (RR, 5.00; 95% CI, 0.83-30.03). In case-control studies, patients with colorectal cancer were 2.27 times more likely to have evidence of intestinal or fecal colonization with SBSEC isolates (odds ratio [OR], 2.27; 95% CI, 1.11-4.62) and immunoglobulin G (IgG) antibody responses to SBSEC antigens (OR, 2.27; 95% CI, 1.06-4.86) compared with controls. Patients with colorectal adenoma were not more likely to be colonized with SBSEC isolates compared with controls (OR, 1.12; 95% CI, 0.55-2.25). Conclusions Apart from the well-established association of SBSEC bacteremia and underlying colorectal cancer, intestinal or fecal colonization with SBSEC isolates and IgG antibody responses to SBSEC antigens were higher in patients with colorectal cancer compared with controls. Neither bacteremia from SBSEC isolates nor colonization with SBSEC bacteria was associated with underlying colorectal adenoma.
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Affiliation(s)
- Konstantinos Ouranos
- Department of Medicine, Houston Methodist Research Institute, Houston, Texas, USA
| | - Angeliki Gardikioti
- Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, New York, USA
| | | | - Evangelia K Mylona
- Department of Medicine, Houston Methodist Research Institute, Houston, Texas, USA
| | - Fadi Shehadeh
- Department of Medicine, Houston Methodist Research Institute, Houston, Texas, USA
- School of Electrical and Computer Engineering, National Technical University of Athens, Athens, Greece
| | - Eleftherios Mylonakis
- Department of Medicine, Houston Methodist Research Institute, Houston, Texas, USA
- Weill Cornell Medicine, New York, New York, USA
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Melis C, Billing AM, Wold PA, Ludington WB. Gut microbiome dysbiosis is associated with host genetics in the Norwegian Lundehund. Front Microbiol 2023; 14:1209158. [PMID: 37405168 PMCID: PMC10315540 DOI: 10.3389/fmicb.2023.1209158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 05/24/2023] [Indexed: 07/06/2023] Open
Abstract
A group of diseases have been shown to correlate with a phenomenon called microbiome dysbiosis, where the bacterial species composition of the gut becomes abnormal. The gut microbiome of an animal is influenced by many factors including diet, exposures to bacteria during post-gestational growth, lifestyle, and disease status. Studies also show that host genetics can affect microbiome composition. We sought to test whether host genetic background is associated with gut microbiome composition in the Norwegian Lundehund dog, a highly inbred breed with an effective population size of 13 individuals. The Lundehund has a high rate of a protein-losing enteropathy in the small intestine that is often reported as Lundehund syndrome, which negatively affects longevity and life-quality. An outcrossing project with the Buhund, Norrbottenspets, and Icelandic sheepdog was recently established to reintroduce genetic diversity to the Lundehund and improve its health. To assess whether there was an association between host genetic diversity and the microbiome composition, we sampled the fecal microbiomes of 75 dogs of the parental (Lundehund), F1 (Lundehund x Buhund), and F2 (F1 x Lundehund) generations. We found significant variation in microbiome composition from the parental Lundehund generation compared to the outcross progeny. The variation observed in purebred Lundehunds corresponded to dysbiosis as seen by a highly variable microbiome composition with an elevated Firmicutes to Bacteroidetes ratio and an increase in the prevalence of Streptococcus bovis/Streptococcus equinus complex, a known pathobiont that can cause several diseases. We tracked several other environmental factors including diet, the presence of a cat in the household, living in a farm and the use of probiotics, but we did not find evidence of an effect of these on microbiome composition and alpha diversity. In conclusion, we found an association between host genetics and gut microbiome composition, which in turn may be associated with the high incidence of Lundehund syndrome in the purebred parental dogs.
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Affiliation(s)
- Claudia Melis
- Department of Nature, Environment and Health, Queen Maud University College, Trondheim, Norway
| | - Anna Maria Billing
- Department of Nature, Environment and Health, Queen Maud University College, Trondheim, Norway
| | - Per-Arvid Wold
- Department of Nature, Environment and Health, Queen Maud University College, Trondheim, Norway
| | - William Basil Ludington
- Department of Embryology, Carnegie Institution for Science, Baltimore, MD, United States
- Department of Biology, Johns Hopkins University, Baltimore, MD, United States
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Microbiome Profile of Dogs with Stage IV Multicentric Lymphoma: A Pilot Study. Vet Sci 2022; 9:vetsci9080409. [PMID: 36006324 PMCID: PMC9414525 DOI: 10.3390/vetsci9080409] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 07/21/2022] [Accepted: 08/03/2022] [Indexed: 11/17/2022] Open
Abstract
Simple Summary Lymphoma is a common type of hematopoietic cancer encountered in small animal practices. Canine multicentric lymphoma represents 80% of lymphoma cases and is characterized by a spread of the disease in multiple lymph nodes and organs as well. A causal role of the gut microbiota in disease spread has been shown in different diseases. In this study, the gut microbiome of dogs diagnosed with stage IV multicentric lymphoma has been analyzed and compared with that of healthy dogs to evaluate potential changes linked to lymphoma and disease spread. Abstract Changes in the gut microbiome can be associated with diseases and affect the overall health of an individual. In the current study, the gut microbiome profile of dogs diagnosed with advanced stages of multicentric lymphoma was compared with that of healthy dogs and analyzed. For this purpose, dogs from veterinary hospitals diagnosed with lymphoma were selected and were further narrowed down to cases of stage IV multicentric lymphoma. Fecal samples from the selected sick and healthy dogs were collected and analyzed using MiSeq sequencing. The gut microbiota in the two groups of dogs was statistically analyzed and compared. The results revealed significant differences in the microbial populations present in sick and healthy dogs. Phylum Actinobacteria and two species (Corynebacterium amycolatum and Streptococcus lutetiensis) were found in high proportions in sick dogs and may be considered as potential biomarkers for canine stage IV multicentric lymphoma. Further investigations need to be conducted to understand the mechanisms they might be involved in.
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Périchon B, Lichtl-Häfele J, Bergsten E, Delage V, Trieu-Cuot P, Sansonetti P, Sobhani I, Dramsi S. Detection of Streptococcus gallolyticus and Four Other CRC-Associated Bacteria in Patient Stools Reveals a Potential "Driver" Role for Enterotoxigenic Bacteroides fragilis. Front Cell Infect Microbiol 2022; 12:794391. [PMID: 35360109 PMCID: PMC8963412 DOI: 10.3389/fcimb.2022.794391] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 02/07/2022] [Indexed: 12/24/2022] Open
Abstract
Purpose Streptococcus gallolyticus subspecies gallolyticus (SGG) is an opportunistic pathogen causing invasive infections in the elderly often associated with colon neoplasia. The prevalence of SGG in the stools of patients with normal colonoscopy (control) was compared with patients with colorectal adenomas (CRA) or with carcinomas (CRC) from stages I to IV. The presence of the pks island encoding colibactin as well as other CRC-associated bacteria such as toxicogenic Bacteroides fragilis, Fusobacterium nucleatum, and Parvimonas micra was also investigated. Patients and Methods Fecal samples collected in France between 2011 and 2016 from patients with normal colonoscopy (n = 25), adenoma (n = 23), or colorectal cancer at different stages (n = 81) were tested by PCR for the presence of SGG, B. fragilis, F. nucleatum, P. micra, and the pks island. Relative quantification of SGG, F. nucleatum, and P. micra in stools was performed by qPCR. Results SGG prevalence was significantly increased in the CRC group. Our results also revealed i) a strong and significant increase of toxinogenic B. fragilis in patients with early-stage adenoma and of pks island at late-stage CRC and ii) increased levels of F. nucleatum and P. micra in the stools of CRC patients. Furthermore, the simultaneous detection of these five bacterial markers was only found in CRC patients. Conclusions Our results indicate that the prevalence or relative levels of CRC-associated bacteria vary during CRC development. Among them, B. fragilis (bft+) was singled out as the sole pathobiont detected at the early adenoma stage.
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Affiliation(s)
- Bruno Périchon
- Institut Pasteur, Unité de Biologie des Bactéries Pathogènes à Gram-Positif, Paris, France
- Centre National de la Recherche Scientifique (CNRS) UMR6047, Paris, France
| | - Julian Lichtl-Häfele
- Institut Pasteur, Unité de Biologie des Bactéries Pathogènes à Gram-Positif, Paris, France
- Centre National de la Recherche Scientifique (CNRS) UMR6047, Paris, France
| | - Emma Bergsten
- Service de Gastroentérologie, Hôpital Henri Mondor, Assistance Publique-Hôpitaux de Paris, Créteil, France
| | - Vincent Delage
- Institut Pasteur, Unité de Biologie des Bactéries Pathogènes à Gram-Positif, Paris, France
- Centre National de la Recherche Scientifique (CNRS) UMR6047, Paris, France
| | - Patrick Trieu-Cuot
- Institut Pasteur, Unité de Biologie des Bactéries Pathogènes à Gram-Positif, Paris, France
- Centre National de la Recherche Scientifique (CNRS) UMR6047, Paris, France
| | - Philippe Sansonetti
- Molecular Microbial Pathogenesis Unit, Institut Pasteur; Chaire de Microbiologie et Maladies Infectieuses, Collège de France, Paris, France
- The Center for Microbes, Development and Health, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shangaï, China
| | - Iradj Sobhani
- Service de Gastroentérologie, Hôpital Henri Mondor, Assistance Publique-Hôpitaux de Paris, Créteil, France
| | - Shaynoor Dramsi
- Institut Pasteur, Unité de Biologie des Bactéries Pathogènes à Gram-Positif, Paris, France
- Centre National de la Recherche Scientifique (CNRS) UMR6047, Paris, France
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Intrauterine infection and postpartum bacteremia due to Streptococcus gallolyticus subsp gallolyticus: An emerging concern. IDCases 2022; 29:e01562. [PMID: 35815109 PMCID: PMC9263517 DOI: 10.1016/j.idcr.2022.e01562] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 07/01/2022] [Indexed: 11/21/2022] Open
Abstract
Streptococcus gallolyticus is a gram-positive coccus belonging to the family Streptococcus bovis/Streptococcus equinus complex (SBSEC). Most cases of SBSEC bacteremia are reported in elderly males with underlying hepatobiliary disease and associated with infective endocarditis (IE) or colonic malignancy. The gastrointestinal tract is the most common portal of entry, followed by the urinary tract and hepatobiliary tree. We present 5 cases of intrapartum bacteremia caused by S. gallolyticus subsp gallolyticus reported from the labor unit of our hospital from 2019 to 2021. There was histopathological or microbiological evidence of chorioamnionitis in each case. All the mothers were below the age of 35 years, and none of them had underlying hepatobiliary or colonic disease. All maternal antenatal screenings for group B streptococci (GBS) were negative. All the isolates were susceptible to penicillins, ceftriaxone, carbapenems, and vancomycin. Three of them were treated with ceftriaxone and two with aminopenicillins. Duration of treatment varied from 8 days to 14 days. None of the babies were low birth weight or pre-term. All but one baby had clinical sepsis requiring neonatal intensive care unit (NICU) stay, with one having evidence of meningitis and three respiratory distress syndromes (RDS). None of the babies had S. gallolyticus bacteremia. All mothers and babies made a complete recovery without any complications. These cases suggest that S. gallolyticus subsp gallolyticus can be a rare but emerging cause of intrauterine infection complicated by post-partum bacteremia. There is possibility of colonization of maternal genital tract with S. gallolyticus causing neonatal infection.
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Chen WC, Lee PI, Lin HC, Chang LY, Lee TF, Chen JM, Hsueh PR. Clustering of Streptococcus gallolyticus subspecies pasteurianus bacteremia and meningitis in neonates. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2020; 54:1078-1085. [PMID: 32768337 DOI: 10.1016/j.jmii.2020.07.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/17/2020] [Accepted: 07/06/2020] [Indexed: 11/24/2022]
Abstract
BACKGROUND/PURPOSE Although Streptococcus gallolyticus subspecies pasteurianus (SGSP) is a rare pathogen in children, it can cause invasive infections among neonates and infants. Herein, we report bacteremia/meningitis caused by SGSP in three neonates and review the literature on bacteremia and/or meningitis caused by this organism. METHODS Three neonates, referred from an obstetrics clinic within a 2-month period, presented with invasive SGSP infections. The bacterial isolates were analyzed using Bruker Biotyper MALDI-TOF, sequencing of 16S rRNA and sodA genes (encoding manganese dependent superoxide dismutase), and PCR restriction fragment length polymorphism assay of groESL gene. Molecular typing was performed to evaluate the genetic relatedness. RESULTS The median onset age of infection in the three neonates was 3 days (range 2-5 days). They were delivered through cesarean section in the same operation room under different doctors, and were cared for by different nurses. Patient A presented with bacteremia, patient B with bacteremia and meningitis, and patient C with meningitis. Four isolates were identified as SGSP and were susceptible to penicillin G, cefotaxime, and vancomycin. All patients were treated with ampicillin plus cefotaxime for 14 days, and no complications were observed. The molecular typing results suggested that all isolates belonged to a single clone, which indicated the possibility of an outbreak in the obstetrics clinic. CONCLUSION Infection by a rare pathogen such as SGSP in multiple patients belonging to a single healthcare unit indicates that detailed investigation and stringent infection control policy are necessary for preventing further outbreaks of such diseases.
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Affiliation(s)
- Wan-Chen Chen
- Department of Pediatrics, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan; Department of Pediatrics, Changhua Christian Children's Hospital, Changhua City, Taiwan
| | - Ping-Ing Lee
- Department of Pediatrics, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Hsiao-Chi Lin
- Department of Pediatrics, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Luan-Ying Chang
- Department of Pediatrics, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Tai-Fen Lee
- Department of Laboratory Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Jong-Min Chen
- Department of Pediatrics, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan; Department of Laboratory Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan.
| | - Po-Ren Hsueh
- Department of Laboratory Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan; Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan.
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Wang D, Zhu X, Tang X, Li H, Yizhen X, Chen D. Auxiliary antitumor effects of fungal proteins from Hericium erinaceus by target on the gut microbiota. J Food Sci 2020; 85:1872-1890. [PMID: 32460371 DOI: 10.1111/1750-3841.15134] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 03/11/2020] [Accepted: 03/16/2020] [Indexed: 12/18/2022]
Abstract
Cancer represents a major disease burden worldwide. Despite continuous advances obtained in medical therapies recently, resistance to standard drugs and adverse effects still represent important causes of therapeutic failure. There is growing evidence that the gut microbiota can affect the response to chemo- and immunotherapeutic drugs by modulating efficacy and/or toxicity, and diet is the most important factor affecting the gut microbiota. In this study, we assessed the auxiliary antitumor effects of immunomodulatory fungal proteins from Hericium erinaceus (HEP) administered with the chemotherapy drug 5-Fluorouracil (5-Fu), and we attempted to identify new potential prebiotic bacteria for auxiliary antitumor treatment. There were 1,455 proteins identified from H. erinaceus. In a xenografted mouse model of cancer, HEP with 5-Fu significantly suppressed tumor growth, inhibited inflammatory markers such as interferon (IFN)-γ, interleukin (IL)-1β, IL-2, IL-6, tumor necrosis factor (TNF)-α, and lipopolysaccharide (LPS), and regulated the expression of Akt, CCDN1, CKD4, FOXM1, MMP7, MYC, PPAR-α, and PPAR-γ. 16S rRNA sequencing showed that HEP ameliorated the dysbacteriosis induced by 5-Fu, as it inhibited certain aerobic and microaerobic bacteria including Parabacteroides, Flavobacteriaceae, Christensenellaceae, Anoxybacillus, Aggregatibacter, Comamonadaceae, Planococcaceae, Desulfovibrionaceae, Sporosarcina, Staphylococcus, Aerococcaceae, and Bilophila in the xenografted mice, and increase some probiotic bacteria such as Bifidobacterium, Gemellales, Blautia, Sutterella, Anaerostipes, Roseburia, Lachnobacterium, Lactobacillus, and Desulfovibrio. This demonstrates that HEP could promote the antitumor efficacy of 5-Fu by improving the microbiota composition, the immune inflammatory response, and homeostasis.
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Affiliation(s)
- Dongdong Wang
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
| | - Xiangxiang Zhu
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China.,Academy of Life Sciences, Jinan Univ., Guangzhou, Guangdong Province, 510000, China
| | - Xiaocui Tang
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
| | - Hongye Li
- Academy of Life Sciences, Jinan Univ., Guangzhou, Guangdong Province, 510000, China
| | - Xie Yizhen
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
| | - Diling Chen
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
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Piva S, Pietra M, Serraino A, Merialdi G, Magarotto J, Giacometti F. First description of Streptococcus lutetiensis from a diseased cat. Lett Appl Microbiol 2019; 69:96-99. [PMID: 31063246 DOI: 10.1111/lam.13168] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 04/11/2019] [Accepted: 04/23/2019] [Indexed: 11/29/2022]
Abstract
This paper describes for the first time the isolation of Streptococcus lutetiensis in a cat with intestinal lymphoma. The Streptococcus bovis group has undergone significant taxonomic changes over the past two decades and, in 2002, Poyart et al. described two distinct novel species within the genus Streptococcus: Streptococcus lutetiensis and Streptococcus pasteurianus. The bovis group streptococci include commensal species and subspecies or opportunistic pathogens of humans and animals. The cat was referred to the Veterinary Teaching Hospital, University of Bologna for chronic diarrhoea associated with fresh blood. A diagnosis of intestinal lymphoma was advanced. S. lutetiensis was accidentally isolated from the faeces of the cat and identified through MALDI-TOF and 16s rRNA sequencing. The Kirby-Bauer test revealed that the isolate was resistant to enrofloxacin, erythromycin, clindamycin, marbofloxacin and tetracycline. The detection of S. lutetiensis in cat faeces might suggest that it could be a normal inhabitant of cat intestinal tract or that it could be involved in the manifestation of intestinal diseases. Since bacteria belonging to the S. bovis group are considered emerging pathogens, additional research is required to evaluate the role of S. lutetiensis in cats and its role in the transmission of antimicrobial resistance. SIGNIFICANCE AND IMPACT OF THE STUDY: In this study the isolation of Streptococcus lutetiensis from a cat with intestinal lymphoma was described for the first time. An antimicrobial susceptibility test performed by means of the disc diffusion method revealed that the isolate was resistant to enrofloxacin, erythromycin, clindamycin, marbofloxacin and tetracycline. Nowadays the ecological or pathogenetic role of S. lutetiensis in the gut of animals remains unclear but, even if its role as commensal bacterium was confirmed, the presence of multi-resistant S. lutetiensis in cat gut could favour the transmission of antimicrobial resistance to other bacteria.
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Affiliation(s)
- S Piva
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - M Pietra
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - A Serraino
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - G Merialdi
- Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia-Romagna 'Bruno Ubertini', Brescia, Italy
| | | | - F Giacometti
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
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Kaindi DWM, Kogi-Makau W, Lule GN, Kreikemeyer B, Renault P, Bonfoh B, Otaru N, Schmid T, Meile L, Hattendorf J, Jans C. Colorectal cancer-associated Streptococcus infantarius subsp. infantarius differ from a major dairy lineage providing evidence for pathogenic, pathobiont and food-grade lineages. Sci Rep 2018; 8:9181. [PMID: 29907746 PMCID: PMC6003927 DOI: 10.1038/s41598-018-27383-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Accepted: 05/25/2018] [Indexed: 02/07/2023] Open
Abstract
Streptococcus infantarius subsp. infantarius (Sii), a member of the Streptococcus bovis/Streptococcus equinus complex (SBSEC), predominates as dairy-adapted and non-adapted variants in fermented dairy products (FDP) in East and West Africa. Epidemiologic data suggest an association with colorectal cancer for most SBSEC members, including Sii from Kenyan patients. Phylogenetic relationships of East African human (EAH) isolates to those of dairy and pathogenic origin were analysed to better estimate potential health implications via FDP consumption. The MLST-derived population structure was also evaluated to provide host, disease, geography and dairy adaptation associations for 157 SBSEC isolates, including 83 novel Sii/SBSEC isolates of which 40 originated from Kenyan colonoscopy patients. Clonal complex (CC) 90 was delineated as potential pathogenic CC for Sii. Single EAH, West African dairy (WAD), food and animal Sii isolates clustered within CC-90, suggesting a potential link to pathogenic traits for CC-90. The majority of EAH and WAD Sii were clustered in a shared clade distinct from CC-90 and East African dairy (EAD) isolates. This indicates shared ancestry for the EAH and WAD clade and limitations to translate disease associations of EAH and CC-90 to EAD Sii, which could support the separation of pathogenic, pathobiont/commensal and food lineages.
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Affiliation(s)
| | - Wambui Kogi-Makau
- Department of Food Science, Nutrition and Technology, University of Nairobi, Nairobi, Kenya
| | | | - Bernd Kreikemeyer
- Institute of Medical Microbiology, Virology, and Hygiene, Rostock University Medical Centre Rostock, Rostock, Germany
| | - Pierre Renault
- Institut National de la Recherche Agronomique, UMR 1319 MICALIS, Jouy-en-Josas, France
| | - Bassirou Bonfoh
- Centre Suisse de Recherches Scientifiques en Côte d'Ivoire, Adiopodoume, Ivory Coast
- Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Basel, Switzerland
- University of Basel, Basel, Switzerland
| | - Nize Otaru
- Laboratory of Food Biotechnology, ETH Zurich, Zurich, Switzerland
| | - Thomas Schmid
- Laboratory of Food Biotechnology, ETH Zurich, Zurich, Switzerland
| | - Leo Meile
- Laboratory of Food Biotechnology, ETH Zurich, Zurich, Switzerland
| | - Jan Hattendorf
- Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Basel, Switzerland
- University of Basel, Basel, Switzerland
| | - Christoph Jans
- Laboratory of Food Biotechnology, ETH Zurich, Zurich, Switzerland.
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11
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Jans C, Boleij A. The Road to Infection: Host-Microbe Interactions Defining the Pathogenicity of Streptococcus bovis/Streptococcus equinus Complex Members. Front Microbiol 2018; 9:603. [PMID: 29692760 PMCID: PMC5902542 DOI: 10.3389/fmicb.2018.00603] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 03/15/2018] [Indexed: 12/17/2022] Open
Abstract
The Streptococcus bovis/Streptococcus equinus complex (SBSEC) comprises several species inhabiting the animal and human gastrointestinal tract (GIT). They match the pathobiont description, are potential zoonotic agents and technological organisms in fermented foods. SBSEC members are associated with multiple diseases in humans and animals including ruminal acidosis, infective endocarditis (IE) and colorectal cancer (CRC). Therefore, this review aims to re-evaluate adhesion and colonization abilities of SBSEC members of animal, human and food origin paired with genomic and functional host-microbe interaction data on their road from colonization to infection. SBSEC seem to be a marginal population during GIT symbiosis that can proliferate as opportunistic pathogens. Risk factors for human colonization are considered living in rural areas and animal-feces contact. Niche adaptation plays a pivotal role where Streptococcus gallolyticus subsp. gallolyticus (SGG) retained the ability to proliferate in various environments. Other SBSEC members have undergone genome reduction and niche-specific gene gain to yield important commensal, pathobiont and technological species. Selective colonization of CRC tissue is suggested for SGG, possibly related to increased adhesion to cancerous cell types featuring enhanced collagen IV accessibility. SGG can colonize, proliferate and may shape the tumor microenvironment to their benefit by tumor promotion upon initial neoplasia development. Bacteria cell surface structures including lipotheichoic acids, capsular polysaccharides and pilus loci (pil1, pil2, and pil3) govern adhesion. Only human blood-derived SGG contain complete pilus loci and other disease-associated surface proteins. Rumen or feces-derived SGG and other SBSEC members lack or harbor mutated pili. Pili also contribute to binding to fibrinogen upon invasion and translocation of cells from the GIT into the blood system, subsequent immune evasion, human contact system activation and collagen-I-binding on damaged heart valves. Only SGG carrying complete pilus loci seem to have highest IE potential in humans with significant links between SGG bacteremia/IE and underlying diseases including CRC. Other SBSEC host-microbe combinations might rely on currently unknown mechanisms. Comparative genome data of blood, commensal and food isolates are limited but required to elucidate the role of pili and other virulence factors, understand pathogenicity mechanisms, host specificity and estimate health risks for animals, humans and food alike.
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Affiliation(s)
- Christoph Jans
- Laboratory of Food Biotechnology, Institute of Food Nutrition and Health, Department of Health Science and Technology, ETH Zurich, Zurich, Switzerland
| | - Annemarie Boleij
- Department of Pathology, Radboud Institute for Molecular Life Sciences, Radboudumc, Nijmegen, Netherlands
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12
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Kaindi DWM, Kogi-Makau W, Lule GN, Kreikemeyer B, Renault P, Bonfoh B, Schelling E, Zinsstag J, Lacroix C, Meile L, Jans C, Hattendorf J. Investigating the association between African spontaneously fermented dairy products, faecal carriage of Streptococcus infantarius subsp. infantarius and colorectal adenocarcinoma in Kenya. Acta Trop 2018; 178:10-18. [PMID: 29079186 PMCID: PMC5766739 DOI: 10.1016/j.actatropica.2017.10.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 10/18/2017] [Accepted: 10/22/2017] [Indexed: 12/22/2022]
Abstract
Consumption of traditional fermented dairy products (tFDP) in Africa leads to the ingestion of up to 108Streptococcus infantarius subspecies infantarius (Sii) per millilitre of spontaneously fermented milk. Sii is a member of the Streptococcus bovis/Streptococcus equinus complex (SBSEC) for which some members are associated particularly with colorectal cancer or endocarditis. The extent of health risks to tFDP consumers is largely unknown. A hospital-based unmatched case-control study was conducted at Kenyatta National Hospital, Nairobi (Kenya) on 80 cases and 193 controls that were selected exhaustively from patients attending colonoscopy at the hospital. Logistic regression models adjusted for age, sex and residency were used in the statistical analysis. Consumption of tFDP was not associated with CRC (odds ratio (OR) 1.4; 95% Confidence interval (CI) 0.7-2.7; p=0.34). Risk factors associated with CRC included age above 40 years, and consumption of processed meat and alcohol. Faecal carriage of Sii was significantly higher in persons with colon tumours and polyps compared to controls (8.4% vs 21.6%: OR: 4.6; CI 1.3-15.9). Patients with haemorrhoids represented an unexpected carrier group with significantly higher Sii faecal carriage (30.4%, CI: 17.7-45.8). Consumption of tFDP does not represent risk factors for CRC whereas Sii seems to be associated with CRC. However, there is urgent need to assess this finding also in the general population, investigate the causality of SBSEC, Sii and CRC as well as compare the phylogenetic, functional and genomic relationship between human and dairy Sii with regards to the ongoing application of Sii in FDP production.
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Affiliation(s)
- Dasel W M Kaindi
- Department of Food Science, Nutrition and Technology, University of Nairobi, P. O. Box 29053 - 00625, Nairobi, Kenya.
| | - Wambui Kogi-Makau
- Department of Food Science, Nutrition and Technology, University of Nairobi, P. O. Box 29053 - 00625, Nairobi, Kenya.
| | - Godfrey N Lule
- School of Medicine, University of Nairobi, P. O. Box 19676, Nairobi, Kenya.
| | - Bernd Kreikemeyer
- Institute of Medical Microbiology, Virology, Hygiene and Bacteriology, Rostock University Medical Center Rostock, Schillingallee 70, 18055 Rostock, Germany.
| | - Pierre Renault
- Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, 78350 Jouy-en-Josas, France.
| | - Bassirou Bonfoh
- Centre Suisse de Recherches Scientifiques en Côte d'Ivoire (CSRS), Km 17, Adiopodoumé, Rte Dabou, 01 BP 1303 Abidjan 01, Cote d'Ivoire; Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Socinstrasse 57, 4002 Basel, Switzerland; University of Basel, Petersplatz 1, 4003 Basel, Switzerland.
| | - Esther Schelling
- Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Socinstrasse 57, 4002 Basel, Switzerland; University of Basel, Petersplatz 1, 4003 Basel, Switzerland.
| | - Jakob Zinsstag
- Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Socinstrasse 57, 4002 Basel, Switzerland; University of Basel, Petersplatz 1, 4003 Basel, Switzerland.
| | - Christophe Lacroix
- Laboratory of Food Biotechnology, Institute of Food Nutrition and Health, Department of Health Science and Technology, ETH Zurich, LFV C22, Schmelzbergstrasse 7, 8092 Zurich, Switzerland.
| | - Leo Meile
- Laboratory of Food Biotechnology, Institute of Food Nutrition and Health, Department of Health Science and Technology, ETH Zurich, LFV C22, Schmelzbergstrasse 7, 8092 Zurich, Switzerland.
| | - Christoph Jans
- Laboratory of Food Biotechnology, Institute of Food Nutrition and Health, Department of Health Science and Technology, ETH Zurich, LFV C22, Schmelzbergstrasse 7, 8092 Zurich, Switzerland.
| | - Jan Hattendorf
- Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Socinstrasse 57, 4002 Basel, Switzerland; University of Basel, Petersplatz 1, 4003 Basel, Switzerland.
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13
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Butt J, Werner S, Willhauck-Fleckenstein M, Michel A, Waterboer T, Zörnig I, Boleij A, Dramsi S, Brenner H, Pawlita M. Serology ofStreptococcus gallolyticussubspeciesgallolyticusand its association with colorectal cancer and precursors. Int J Cancer 2017; 141:897-904. [DOI: 10.1002/ijc.30765] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2017] [Accepted: 04/20/2017] [Indexed: 12/31/2022]
Affiliation(s)
- Julia Butt
- Division of Molecular Diagnostics of Oncogenic Infections; German Cancer Research Center (DKFZ); Heidelberg Germany
| | - Simone Werner
- Division of Clinical Epidemiology and Aging Research; German Cancer Research Center (DKFZ); Heidelberg Germany
| | | | - Angelika Michel
- Division of Molecular Diagnostics of Oncogenic Infections; German Cancer Research Center (DKFZ); Heidelberg Germany
| | - Tim Waterboer
- Division of Molecular Diagnostics of Oncogenic Infections; German Cancer Research Center (DKFZ); Heidelberg Germany
| | - Inka Zörnig
- Department of Medical Oncology; National Center for Tumor Diseases (NCT) and Heidelberg University Hospital; Heidelberg Germany
| | - Annemarie Boleij
- Department of Pathology; Radboud University Medical Center; Nijmegen The Netherlands
| | | | - Hermann Brenner
- Division of Clinical Epidemiology and Aging Research; German Cancer Research Center (DKFZ); Heidelberg Germany
| | - Michael Pawlita
- Division of Molecular Diagnostics of Oncogenic Infections; German Cancer Research Center (DKFZ); Heidelberg Germany
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14
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Dumke J, Vollmer T, Akkermann O, Knabbe C, Dreier J. Case-control study: Determination of potential risk factors for the colonization of healthy volunteers with Streptococcus gallolyticus subsp. gallolyticus. PLoS One 2017; 12:e0176515. [PMID: 28459818 PMCID: PMC5411088 DOI: 10.1371/journal.pone.0176515] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 04/12/2017] [Indexed: 12/23/2022] Open
Abstract
Streptococcus gallolyticus subsp. gallolyticus was identified in humans and animals as commensal of the gut and can act as a causative agent of endocarditis and septicemia. A case-control study was performed to identify yet unknown risk factors for the transmission of this facultative pathogen. The prevalence in the gut of 99 healthy volunteers was determined using real-time polymerase chain reaction resulting in 62.5% S. gallolyticus subsp. gallolyticus positive excrements. Subsequent cultivation offered three isolates and epidemiological analysis based on MLST revealed sequence type (ST) 3 and ST 7, previously detected from bovine and endocarditis patients. These results support the hypotheses of the zoonotic potential of this bacterium. Participant questionnaires were evaluated concerning personal characteristics, nutritional habits and animal contact. Specifically, closer contact between participants and animals influenced the colonization of the human gut significantly and was further affected if volunteers used excrement for the fertilization of plants.
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Affiliation(s)
- Jessika Dumke
- Institut für Laboratoriums- und Transfusionsmedizin, Herz- und Diabeteszentrum Nordrhein-Westfalen, Universitätsklinik der Ruhr-Universität Bochum, Bad Oeynhausen, Germany
| | - Tanja Vollmer
- Institut für Laboratoriums- und Transfusionsmedizin, Herz- und Diabeteszentrum Nordrhein-Westfalen, Universitätsklinik der Ruhr-Universität Bochum, Bad Oeynhausen, Germany
| | | | - Cornelius Knabbe
- Institut für Laboratoriums- und Transfusionsmedizin, Herz- und Diabeteszentrum Nordrhein-Westfalen, Universitätsklinik der Ruhr-Universität Bochum, Bad Oeynhausen, Germany
| | - Jens Dreier
- Institut für Laboratoriums- und Transfusionsmedizin, Herz- und Diabeteszentrum Nordrhein-Westfalen, Universitätsklinik der Ruhr-Universität Bochum, Bad Oeynhausen, Germany
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15
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Complete Genome Sequence of the Streptococcus gallolyticus subsp. gallolyticus Strain DSM 16831. GENOME ANNOUNCEMENTS 2017; 5:5/16/e00108-17. [PMID: 28428288 PMCID: PMC5399247 DOI: 10.1128/genomea.00108-17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Streptococcus gallolyticus subsp. gallolyticus DSM 16831 is an intriguing strain because of its low virulent phenotype compared to other isolates. We present here the complete genome sequence for this strain isolated from koala feces.
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16
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Inducible Expression of both ermB and ermT Conferred High Macrolide Resistance in Streptococcus gallolyticus subsp. pasteurianus Isolates in China. Int J Mol Sci 2016; 17:ijms17101599. [PMID: 27669217 PMCID: PMC5085632 DOI: 10.3390/ijms17101599] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 09/11/2016] [Accepted: 09/12/2016] [Indexed: 11/16/2022] Open
Abstract
Streptococcus gallolyticus subsp. pasteurianus is an under-recognized pathogen and zoonotic agent causing opportunistic infections in humans. Despite increasing recognition of this subspecies as a cause for human infectious diseases, limited information is known about its antibiotic resistance mechanism. In this study, we aim to identify the molecular mechanism underlying the high macrolide resistance of six S. gallolyticus subsp. pasteurianus isolates from dead ducklings collected in several natural outbreaks in China during 2010–2013. All isolates exhibited multi-drug resistance including high macrolide resistance (MIC ≥ 1024 mg/L for erythromycin, and 512 mg/L for clarithromycin). Efflux-encoding mefA and mefE genes were not detectable in these isolates. The presence of 23S rRNA mutations in specific isolates did not significantly change macrolide MICs. No nucleotide substitutions were found in genes encoding ribosomal proteins L4 or L22. The ermB and ermT genes were found in the genomes of all isolates. These two genes were acquired independently in one highly virulent isolate AL101002, and clustered with Tn916 and IS1216, respectively. The expression of both ermB and ermT in all isolates was erythromycin inducible and yielded comparable macrolide MICs in all six isolates. Taken together, inducible expression of both ermB and ermT conferred high macrolide resistance in these S. gallolyticus subsp. pasterianus isolates. Our findings reveal new macrolide resistance features in S. gallolyticus subsp. pasteurianus by both ermB and ermT.
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17
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Jans C, de Wouters T, Bonfoh B, Lacroix C, Kaindi DWM, Anderegg J, Böck D, Vitali S, Schmid T, Isenring J, Kurt F, Kogi-Makau W, Meile L. Phylogenetic, epidemiological and functional analyses of the Streptococcus bovis/Streptococcus equinus complex through an overarching MLST scheme. BMC Microbiol 2016; 16:117. [PMID: 27329036 PMCID: PMC4915170 DOI: 10.1186/s12866-016-0735-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Accepted: 06/08/2016] [Indexed: 12/20/2022] Open
Abstract
Background The Streptococcus bovis/Streptococcus equinus complex (SBSEC) comprises seven (sub)species classified as human and animal commensals, emerging opportunistic pathogens and food fermentative organisms. Changing taxonomy, shared habitats, natural competence and evidence for horizontal gene transfer pose difficulties for determining their phylogeny, epidemiology and virulence mechanisms. Thus, novel phylogenetic and functional classifications are required. An SBSEC overarching multi locus sequence type (MLST) scheme targeting 10 housekeeping genes was developed, validated and combined with host-related properties of adhesion to extracellular matrix proteins (ECM), activation of the immune responses via NF-KB and survival in simulated gastric juice (SGJ). Results Commensal and pathogenic SBSEC strains (n = 74) of human, animal and food origin from Europe, Asia, America and Africa were used in the MLST scheme yielding 66 sequence types and 10 clonal complexes differentiated into distinct habitat-associated and mixed lineages. Adhesion to ECMs collagen I and mucin type II was a common characteristic (23 % of strains) followed by adhesion to fibronectin and fibrinogen (19.7 %). High adhesion abilities were found for East African dairy and human blood isolate branches whereas commensal fecal SBSEC displayed low adhesion. NF-KB activation was observed for a limited number of dairy and blood isolates suggesting the potential of some pathogenic strains for reduced immune activation. Strains from dairy MLST clades displayed the highest relative survival to SGJ independently of dairy adaptation markers lacS/lacZ. Conclusion Combining phylogenetic and functional analyses via SBSEC MLST enabled the clear delineation of strain clades to unravel the complexity of this bacterial group. High adhesion values shared between certain dairy and blood strains as well as the behavior of NF-KB activation are concerning for specific lineages. They highlighted the health risk among shared lineages and establish the basis to elucidate (zoonotic-) transmission, host specificity, virulence mechanisms and enhanced risk assessment as pathobionts in an overarching One Health approach. Electronic supplementary material The online version of this article (doi:10.1186/s12866-016-0735-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Christoph Jans
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, ETH Zurich, Schmelzbergstrasse 7, 8092, Zurich, Switzerland
| | - Tomas de Wouters
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, ETH Zurich, Schmelzbergstrasse 7, 8092, Zurich, Switzerland
| | - Bassirou Bonfoh
- Centre Suisse de Recherches Scientifiques en Côte d'Ivoire (CSRS), KM 17 route de Dabou, Adiopodoumé Yopougon, Abidjan - 01B.P. 1303, Abidjan, Côte d'Ivoire
| | - Christophe Lacroix
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, ETH Zurich, Schmelzbergstrasse 7, 8092, Zurich, Switzerland
| | - Dasel Wambua Mulwa Kaindi
- Department of Food Science, Nutrition and Technology, College of Agriculture and Veterinary Sciences, University of Nairobi, P.O. Box 29053, Nairobi, Kenya
| | - Janine Anderegg
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, ETH Zurich, Schmelzbergstrasse 7, 8092, Zurich, Switzerland
| | - Désirée Böck
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, ETH Zurich, Schmelzbergstrasse 7, 8092, Zurich, Switzerland
| | - Sabrina Vitali
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, ETH Zurich, Schmelzbergstrasse 7, 8092, Zurich, Switzerland
| | - Thomas Schmid
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, ETH Zurich, Schmelzbergstrasse 7, 8092, Zurich, Switzerland
| | - Julia Isenring
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, ETH Zurich, Schmelzbergstrasse 7, 8092, Zurich, Switzerland
| | - Fabienne Kurt
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, ETH Zurich, Schmelzbergstrasse 7, 8092, Zurich, Switzerland
| | - Wambui Kogi-Makau
- Department of Food Science, Nutrition and Technology, College of Agriculture and Veterinary Sciences, University of Nairobi, P.O. Box 29053, Nairobi, Kenya
| | - Leo Meile
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, ETH Zurich, Schmelzbergstrasse 7, 8092, Zurich, Switzerland.
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18
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Delahaye F, M'Hammedi A, Guerpillon B, de Gevigney G, Boibieux A, Dauwalder O, Bouchiat C, Vandenesch F. Systematic Search for Present and Potential Portals of Entry for Infective Endocarditis. J Am Coll Cardiol 2016; 67:151-158. [PMID: 26791061 DOI: 10.1016/j.jacc.2015.10.065] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Revised: 10/05/2015] [Accepted: 10/13/2015] [Indexed: 10/22/2022]
Abstract
BACKGROUND Looking for and treating the portal of entry (POE) of infective endocarditis (IE) is important, but published research on this topic is nonexistent. OBJECTIVES The goal of this study was to systematically search for the POEs of present and potentially new episodes of IEs. METHODS Patients were systematically seen by a stomatologist, an ear, nose, and throat specialist, and a urologist; women were systematically seen by a gynecologist; patients were seen by a dermatologist when there were cutaneous and/or mucous lesions. Colonoscopy and gastroscopy were performed if the microorganism came from the gastrointestinal tract in patients ≥50 years of age and in those with familial histories of colonic polyposis. Treatment of the POE was systematically considered. RESULTS The POEs of the present IE episodes were identified in 74% of the 318 included patients. The most frequent POE was cutaneous (40% of identified POEs). It was mainly (62% of cutaneous POEs) associated with health care and with intravenous drug use. The second most frequent POE was oral or dental (29%). A dental infectious focus was more often involved (59% of oral or dental POEs) than a dental procedure (12%). POEs were gastrointestinal in 23% of patients. Colonic polyps were found in one-half of the patients and colorectal adenocarcinomas in 14%. Performance was good regarding the search for an oral or dental or a colonic potential POE, which were found in 53% and 40% of patients, respectively. CONCLUSIONS Our search for the POEs of present IEs was often successful, as was searching for an oral or dental or a gastrointestinal POE of a new IE episode. We advise the systematic performance of stomatologic examinations in patients with IE and performance of colonoscopy in patients ≥50 years of age or at high risk for colorectal cancer.
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Affiliation(s)
- François Delahaye
- Department of Cardiology, Hôpital Louis Pradel, Hospices Civils de Lyon, Université Claude Bernard, Lyon, France.
| | - Ali M'Hammedi
- Department of Cardiology, Hôpital Louis Pradel, Hospices Civils de Lyon, Lyon, France
| | - Brice Guerpillon
- Department of Infectious Diseases, Hôpital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, France
| | - Guy de Gevigney
- Department of Cardiology, Hôpital Louis Pradel, Hospices Civils de Lyon, Lyon, France
| | - André Boibieux
- Department of Infectious Diseases, Hôpital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, France
| | - Olivier Dauwalder
- Centre National de Référence des Staphylocoques, Hospices Civils de Lyon, Lyon, France
| | - Coralie Bouchiat
- Centre National de Référence des Staphylocoques, Hospices Civils de Lyon, Lyon, France
| | - François Vandenesch
- Centre National de Référence des Staphylocoques, Hospices Civils de Lyon, Lyon, France
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19
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Colonic carriage of Streptococcus bovis and colorectal neoplasia: a prospective 17-year longitudinal case-control study. Eur J Gastroenterol Hepatol 2015; 27:1449-53. [PMID: 26340165 DOI: 10.1097/meg.0000000000000466] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
BACKGROUND Patients with Streptococcus bovis infective endocarditis have an increased prevalence of advanced colonic neoplasia; however, an association with fecal carriage of the organism is unclear. S. bovis has been shown to promote colonic neoplasia in preclinical studies. The aim of this study was to examine the effect of S. bovis fecal carriage on the long-term risk of colonic neoplasia. PATIENTS AND METHODS Patients were prospectively recruited before colonoscopy. S. bovis was detected by culture in stool, colonic fluid aspirates, and biopsies. Patients continued colonoscopic surveillance at intervals according to accepted guidelines. The National Cancer Registry was checked for diagnoses of colorectal cancer on 31 December 2014. RESULTS A total of 118 patients were recruited [75 (72.8%) men, aged 64.5±9.3 years] including 15 with S. bovis. The mean duration of follow-up was 190.7±123.5 months. Colonic neoplasia was detected at colonoscopy in six (40.0%) and 49 (47%) patients with and without S. bovis, respectively (P=0.78). At the end of follow-up, colorectal cancer had developed in one (6.7%) S. bovis-positive and six (5.8%) S. bovis-negative patients (P=1.00). CONCLUSION Fecal carriage of S. bovis at baseline is not associated with an increased long-term risk of developing colonic neoplasia in this longitudinal study.
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20
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Butt J, Romero-Hernández B, Pérez-Gómez B, Willhauck-Fleckenstein M, Holzinger D, Martin V, Moreno V, Linares C, Dierssen-Sotos T, Barricarte A, Tardón A, Altzibar JM, Moreno-Osset E, Franco F, Requena RO, Huerta JM, Michel A, Waterboer T, Castaño-Vinyals G, Kogevinas M, Pollán M, Boleij A, de Sanjosé S, Del Campo R, Tjalsma H, Aragonés N, Pawlita M. Association of Streptococcus gallolyticus subspecies gallolyticus with colorectal cancer: Serological evidence. Int J Cancer 2015; 138:1670-9. [PMID: 26537841 DOI: 10.1002/ijc.29914] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Revised: 10/08/2015] [Accepted: 10/21/2015] [Indexed: 01/25/2023]
Abstract
The colonic opportunist Streptococcus gallolyticus subspecies gallolyticus (SGG) is potentially associated with colorectal cancer (CRC). Large-scale seroepidemiological data for SGG antibodies and their possible association with CRC is currently missing. Associations between CRC and antibody responses to SGG were examined in 576 CRC cases and 576 controls matched by sex, age and province from a population-based multicase-control project (MCC-Spain). MCC-Spain was conducted between 2008 and 2013 in 12 Spanish provinces. Antibody responses to recombinant affinity-purified SGG pilus proteins Gallo1569, 2039, 2178 and 2179 were analysed by multiplex serology. Polyomavirus (PyV) JC VP1 and PyV 6 VP1 proteins served as disease-specificity controls. In the control population, antibody responses to pilus proteins were mostly weak. Antibody responses to individual pilus proteins Gallo2039 (OR: 1.58, 95% CI: 1.09-2.28), Gallo2178 (OR: 1.58, 95% CI: 1.09-2.30) and Gallo2179 (OR: 1.45, 95% CI: 1.00-2.11) were significantly associated with CRC risk. The association was stronger for positivity to two or more pilus proteins of Gallo1569, Gallo2178 and Gallo2179 (OR:1.93, 95% CI: 1.04-3.56) and for double-positivity to Gallo2178 and Gallo2179 (OR: 3.54, 95% CI: 1.49-8.44). The association between SGG infection and CRC risk was stronger among individuals younger than 65 years. For the first time we demonstrated a statistically significant association of exposure to SGG antigens and CRC in a large seroepidemiological study. These results should stimulate further studies on the role of SGG in CRC pathogenesis.
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Affiliation(s)
- Julia Butt
- Division of Molecular Diagnostics of Oncogenic Infections, Infection, Inflammation and Cancer Program, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Beatriz Romero-Hernández
- Servicio De Microbiología, Hospital Universitario Ramón Y Cajal and Instituto Ramón Y Cajal De Investigaciones Sanitarias (IRYCIS), Madrid, Spain.,Red Española De Investigación En Patología Infecciosa (REIPI), Madrid, Spain
| | - Beatriz Pérez-Gómez
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,Environmental and Cancer Epidemiology Unit, National Center of Epidemiology, Instituto De Salud Carlos III, Madrid, Spain.,Oncology and Hematology Area, IIS Puerta De Hierro, Cancer Epidemiology Research Group, Madrid, Spain
| | - Martina Willhauck-Fleckenstein
- Division of Molecular Diagnostics of Oncogenic Infections, Infection, Inflammation and Cancer Program, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Dana Holzinger
- Division of Molecular Diagnostics of Oncogenic Infections, Infection, Inflammation and Cancer Program, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Vicente Martin
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,Universidad De León, León, Spain
| | - Victor Moreno
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,Cancer Epidemiology Research Programme, IDIBELL, Institut Català D'oncologica L'hospitalet De Llobregat, Barcelona, Spain.,Department of Clinical Sciences, Faculty of Medicine, University of Barcelona, Barcelona, Spain
| | - Cristina Linares
- National School of Public Health, Instituto De Salud Carlos III, Madrid, Spain
| | - Trinidad Dierssen-Sotos
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,IDIVAL-University of Cantabria, Santander, Spain
| | - Aurelio Barricarte
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,Navarra Public Health Institute, Pamplona, Spain.,Navarra Institute for Health Research (IdiSNA), Pamplona, Spain
| | - Adonina Tardón
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,IUOPA, Universidad De Oviedo, Asturias, Spain
| | - Jone M Altzibar
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,Public Health Division of Gipuzkoa, Biodonostia Research Institute, San Sebastian, Spain
| | - Eduardo Moreno-Osset
- Servicio De Medicina Digestiva, Hospital Univesitario Dr. Peset, Universidad De Valencia, Valencia, Spain
| | - Francisco Franco
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,Centro De Investigación En Salud Y Medio Ambiente (CYSMA), Universidad De Huelva, Huelva, Spain.,Hospital General De Riotinto, Huelva, Spain
| | - Rocío Olmedo Requena
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,Instituto De Investigación Biosanitaria De Granada (Ibs.GRANADA), Hospitales Universitarios De Granada/Universidad De Granada, Granada, Spain
| | - José María Huerta
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,Department of Epidemiology, Murcia Regional Health Council, IMIB-Arrixaca, Murcia, Spain
| | - Angelika Michel
- Division of Molecular Diagnostics of Oncogenic Infections, Infection, Inflammation and Cancer Program, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Tim Waterboer
- Division of Molecular Diagnostics of Oncogenic Infections, Infection, Inflammation and Cancer Program, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Gemma Castaño-Vinyals
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain.,IMIM (Hospital Del Mar Medical Research Institute), Barcelona, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | - Manolis Kogevinas
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain.,IMIM (Hospital Del Mar Medical Research Institute), Barcelona, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Spain.,School of Public Health, Athens, Greece
| | - Marina Pollán
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,Environmental and Cancer Epidemiology Unit, National Center of Epidemiology, Instituto De Salud Carlos III, Madrid, Spain.,Oncology and Hematology Area, IIS Puerta De Hierro, Cancer Epidemiology Research Group, Madrid, Spain
| | - Annemarie Boleij
- Department of Pathology, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Silvia de Sanjosé
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,Cancer Epidemiology Research Programme, IDIBELL, Institut Català D'oncologica L'hospitalet De Llobregat, Barcelona, Spain
| | - Rosa Del Campo
- Servicio De Microbiología, Hospital Universitario Ramón Y Cajal and Instituto Ramón Y Cajal De Investigaciones Sanitarias (IRYCIS), Madrid, Spain.,Red Española De Investigación En Patología Infecciosa (REIPI), Madrid, Spain
| | - Harold Tjalsma
- Department of Laboratory Medicine, Nijmegen Institute for Infection, Inflammation and Immunity (N4i) & Radboud University Centre for Oncology (RUCO), Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Nuria Aragonés
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,Environmental and Cancer Epidemiology Unit, National Center of Epidemiology, Instituto De Salud Carlos III, Madrid, Spain.,Oncology and Hematology Area, IIS Puerta De Hierro, Cancer Epidemiology Research Group, Madrid, Spain
| | - Michael Pawlita
- Division of Molecular Diagnostics of Oncogenic Infections, Infection, Inflammation and Cancer Program, German Cancer Research Center (DKFZ), Heidelberg, Germany
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21
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Abstract
INTRODUCTION Streptococci are a genus of Gram-positive bacteria which cause diverse human diseases. Many of these species have the potential to cause invasive infection resulting from the presence of bacteria in a normally sterile site. SOURCES OF DATA Original articles, reviews and guidelines. AREAS OF AGREEMENT Invasive infection by a streptococcus species usually causes life-threatening illness. When measured in terms of deaths, disability and cost, these infections remain an important threat to health in the UK. Overall they are becoming more frequent among the elderly and those with underlying chronic illness. New observational evidence has become available to support the use of clindamycin and intravenous immunoglobulin in invasive Group A streptococcal disease. AREAS OF CONTROVERSY Few interventions for the treatment and prevention of these infections have undergone rigorous evaluation in clinical trials. For example, the role of preventative strategies such as screening of pregnant women to prevent neonatal invasive Group B streptococcal disease needs to be clarified. FUTURE PROSPECTS Studies of invasive streptococcal disease are challenging to undertake, not least because individual hospitals treat relatively few confirmed cases. Instead clinicians and scientists must work together to build national and international networks with the aim of developing a more complete evidence base for the treatment and prevention of these devastating infections.
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Affiliation(s)
- Tom Parks
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
| | - Lucinda Barrett
- Department of Microbiology and Infectious Diseases, Oxford University Hospitals NHS Trust, Oxford, UK
| | - Nicola Jones
- Department of Microbiology and Infectious Diseases, Oxford University Hospitals NHS Trust, Oxford, UK
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22
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Corredoira J, Grau I, Garcia-Rodriguez JF, Alonso-Garcia P, Garcia-Pais MJ, Rabuñal R, Garcia-Garrote F, Ardanuy C, Coira A, Lopez-Alvarez MJ, Pallares R. The clinical epidemiology and malignancies associated with Streptococcus bovis biotypes in 506 cases of bloodstream infections. J Infect 2015; 71:317-25. [PMID: 25982024 DOI: 10.1016/j.jinf.2015.05.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Revised: 05/06/2015] [Accepted: 05/09/2015] [Indexed: 10/23/2022]
Abstract
OBJECTIVES To determine the incidence of Streptococcus bovis (Sb) biotypes causing bacteraemia and associated malignancies. METHODS This is a retrospective analysis of patients with Sb bacteraemia, pulled out from a prospective surveillance protocol of bacteraemia cases, in three areas of Spain (1990-2013): a cattle area (Lugo), a fishing area (Ferrol) and an urban area (Barcelona). Colonoscopy and Sb biotypes (Sb-I and Sb-II) were determined in most cases. RESULTS 506 patients with Sb bacteraemia; mean age 68.1 (±14.1) years, and 66.2% were males. The cattle area, compared with the fishing and urban areas, had higher incidence of bacteraemia by SbI (40.29 vs 9.38 vs 6.15 cases/10(6) person-years, P < 0.001) and bacteraemia by Sb-II (29.07 vs 9.84 vs 13.37 cases/10(6) person-years, P < 0.001). The Sb-I cases (n = 224), compared with Sb-II cases (n = 270), had greater rates of endocarditis (77.6% vs 9.6%, P < 0.001) and colorectal neoplasm (CRN) (50.9% vs 16.6%, P < 0.001), and smaller rates of biliary tract infection (2.2% vs 29.6%, P < 0.001) and non-colorectal malignancy (8.9% vs 31.4%, P < 0.001). CONCLUSION There was a link between the cattle area and higher incidence of Sb bacteraemia. Sb-I differed from Sb-II cases in clinical findings and associated malignancies. Colonoscopy is mandatory in cases of endocarditis or bacteraemia caused by Sb-I.
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Affiliation(s)
- Juan Corredoira
- Infectious Disease Unit and Microbiology Departments, Hospital Lugo "Lucus Augusti", Lugo, Spain.
| | - Imma Grau
- Infectious Disease and Microbiology Departments, Hospital Bellvitge, Ciberes, Idibell, University of Barcelona, L'Hospitalet, Barcelona, Spain.
| | | | - Pilar Alonso-Garcia
- Infectious Disease Unit and Microbiology Departments, Hospital Lugo "Lucus Augusti", Lugo, Spain.
| | - M J Garcia-Pais
- Infectious Disease Unit and Microbiology Departments, Hospital Lugo "Lucus Augusti", Lugo, Spain.
| | - Ramon Rabuñal
- Infectious Disease Unit and Microbiology Departments, Hospital Lugo "Lucus Augusti", Lugo, Spain.
| | - Fernando Garcia-Garrote
- Infectious Disease Unit and Microbiology Departments, Hospital Lugo "Lucus Augusti", Lugo, Spain.
| | - Carmen Ardanuy
- Infectious Disease and Microbiology Departments, Hospital Bellvitge, Ciberes, Idibell, University of Barcelona, L'Hospitalet, Barcelona, Spain.
| | - Amparo Coira
- Infectious Disease Unit and Microbiology Departments, Hospital Lugo "Lucus Augusti", Lugo, Spain.
| | - M J Lopez-Alvarez
- Infectious Disease Unit and Microbiology Departments, Hospital Lugo "Lucus Augusti", Lugo, Spain.
| | - Roman Pallares
- Infectious Disease and Microbiology Departments, Hospital Bellvitge, Ciberes, Idibell, University of Barcelona, L'Hospitalet, Barcelona, Spain.
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23
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Matesanz M, Rubal D, Iñiguez I, Rabuñal R, García-Garrote F, Coira A, García-País MJ, Pita J, Rodriguez-Macias A, López-Álvarez MJ, Alonso MP, Corredoira J. Is Streptococcus bovis a urinary pathogen? Eur J Clin Microbiol Infect Dis 2014; 34:719-25. [PMID: 25416160 DOI: 10.1007/s10096-014-2273-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Accepted: 10/30/2014] [Indexed: 10/24/2022]
Abstract
The Streptococcus bovis group (SBG) comprises several microorganisms associated with human infections. They have been associated with bacteremia, endocarditis, biliary tract infection, meningitis, and colorectal cancer, but their role as urinary pathogens is not well known. The objective of this investigation was to discover the incidence and clinical significance of the bacteriuria associated with this complex. A retrospective analysis of all adult patients with bacteriuria caused by SBG during the period 1995-2012 was carried out. During the study period, SBG was isolated in 153 adult patients, who had a mean age of 67 years, most of them being women (80%). Most of our patients (65%) had some underlying disease, with urologic disease being the most common (37%), followed by diabetes mellitus (27%) and neurologic disease (25%). Among the 88 patients in whom we were able to correctly assess symptoms, 45% had asymptomatic bacteriuria, 35% had lower urinary tract infection, and 20% had upper urinary tract infection. In 14 cases (9%), SBG was also isolated in blood cultures. Most of the isolates of SBG (72%) were S. gallolyticus subsp. pasteurianus. All isolates were susceptible to penicillin, 98% to nitrofurantoin, and 77% to fosfomycin. Although SBG bacteriuria is uncommon, it should not always be taken as a contaminant, mainly when S. pasteurianus is isolated, because it may cause urinary tract infections and, occasionally, sepsis, whereas when S. gallolyticus is isolated from urine, it may be a marker of underlying endocarditis and colorectal cancer.
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Affiliation(s)
- M Matesanz
- Department of Internal Medicine, Hospital Lucus Augusti, Lugo, Spain
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24
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Jans C, Meile L, Lacroix C, Stevens MJA. Genomics, evolution, and molecular epidemiology of the Streptococcus bovis/Streptococcus equinus complex (SBSEC). INFECTION GENETICS AND EVOLUTION 2014; 33:419-36. [PMID: 25233845 DOI: 10.1016/j.meegid.2014.09.017] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Revised: 09/10/2014] [Accepted: 09/11/2014] [Indexed: 02/07/2023]
Abstract
The Streptococcus bovis/Streptococcus equinus complex (SBSEC) is a group of human and animal derived streptococci that are commensals (rumen and gastrointestinal tract), opportunistic pathogens or food fermentation associates. The classification of SBSEC has undergone massive changes and currently comprises 7 (sub)species grouped into four branches based on sequences identities: the Streptococcus gallolyticus, the Streptococcus equinus, the Streptococcus infantarius and the Streptococcus alactolyticus branch. In animals, SBSEC are causative agents for ruminal acidosis, potentially laminitis and infective endocarditis (IE). In humans, a strong association was established between bacteraemia, IE and colorectal cancer. Especially the SBSEC-species S. gallolyticus subsp. gallolyticus is an emerging pathogen for IE and prosthetic joint infections. S. gallolyticus subsp. pasteurianus and the S. infantarius branch are further associated with biliary and urinary tract infections. Knowledge on pathogenic mechanisms is so far limited to colonization factors such as pili and biofilm formation. Certain strain variants of S. gallolyticus subsp. macedonicus and S. infantarius subsp. infantarius are associated with traditional dairy and plant-based food fermentations and display traits suggesting safety. However, due to their close relationship to virulent strains, their use in food fermentation has to be critically assessed. Additionally, implementing accurate and up-to-date taxonomy is critical to enable appropriate treatment of patients and risk assessment of species and strains via recently developed multilocus sequence typing schemes to enable comparative global epidemiology. Comparative genomics revealed that SBSEC strains harbour genomics islands (GI) that seem acquired from other streptococci by horizontal gene transfer. In case of virulent strains these GI frequently encode putative virulence factors, in strains from food fermentation the GI encode functions that are pivotal for strain performance during fermentation. Comparative genomics is a powerful tool to identify acquired pathogenic functions, but there is still an urgent need for more physiological and epidemiological data to understand SBSEC-specific traits.
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Affiliation(s)
- Christoph Jans
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, ETH Zürich, Schmelzbergstrasse 7, 8092 Zurich, Switzerland
| | - Leo Meile
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, ETH Zürich, Schmelzbergstrasse 7, 8092 Zurich, Switzerland
| | - Christophe Lacroix
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, ETH Zürich, Schmelzbergstrasse 7, 8092 Zurich, Switzerland
| | - Marc J A Stevens
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, ETH Zürich, Schmelzbergstrasse 7, 8092 Zurich, Switzerland.
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25
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Krishnan S, Eslick GD. Streptococcus bovis infection and colorectal neoplasia: a meta-analysis. Colorectal Dis 2014; 16:672-80. [PMID: 24824513 DOI: 10.1111/codi.12662] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2014] [Accepted: 04/29/2014] [Indexed: 12/23/2022]
Abstract
AIM A meta-analysis was conducted to determine the risk associated with Streptococcus bovis infection and the occurrence of colorectal neoplasia (CRN). The level of risk remains unknown. METHOD We conducted a search of MEDLINE, PubMed and EMBASE up to January 2014. We used a random-effects model to analyse the data. RESULTS We identified 48 studies concerning three main topics: S. bovis septicaemia, S. bovis endocarditis and S. bovis faecal carriage. The total sample sizes were 1729, 807 and 1145, respectively; the 48 studies included 9 case-control studies and 39 case series. Overall, the presence of S. bovis infection was found to be significantly associated with the presence of CRN. Streptococcus bovis endocarditis showed the strongest association in analyses of case-control studies and case series (OR 14.54, 95% CI 5.66-37.35, test for heterogeneity I2 = 43.53; event rate of 0.53, 95% CI 0.45-0.61, test for heterogeneity I2 = 53.50). Similarly, S. bovis septicaemia was also associated with a high level of concurrence with CRN (OR 7.48, 95% CI 3.10-18.06, test for heterogeneity I(2) = 43.32; event rate 0.49, 95% CI 0.42-0.56, test for heterogeneity I2 = 69.97). Patients with CRN were found to have a higher incidence of S. bovis in faeces upon stool culture (OR 2.52, 95% CI 1.14-5.58, test for heterogeneity I2 = 69.17). CONCLUSION The meta-analysis showed a statistically significant association between the presence of S. bovis endocarditis or S. bovis septicaemia and CRN. Furthermore, there is a statistically significant increase in likelihood of finding S. bovis in the stool of individuals with CRN.
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Affiliation(s)
- S Krishnan
- The Whiteley-Martin Research Centre, Discipline of Surgery, The University of Sydney, Nepean Hospital, Penrith, New South Wales, Australia
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26
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Saumya D, Wijetunge S, Dunn P, Wallner-Pendleton E, Lintner V, Matthews T, Pierre T, Kariyawasam S. Acute septicemia caused by Streptococcus gallolyticus subsp. pasteurianus in turkey poults. Avian Dis 2014; 58:318-22. [PMID: 25055641 DOI: 10.1637/10617-071813-case.1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Streptococcus gallolyticus, previously known as Streptococcus bovis biotypes I and II/2, is a well-known cause of sepsis and meningitis in humans and birds. The present case report describes an outbreak of fatal septicemia associated with S. gallolyticus subsp. pasteurianus (S. bovis biotype II/2) in 11 turkey flocks in Pennsylvania between 2010 and 2013. Affected poults were 2-3 wk of age. Major clinical observation was sudden increase in mortality among turkey poults without any premonitory clinical signs. Postmortem examination findings revealed acute septicemia with lesions such as fibrinous pericarditis, meningitis, splenic multifocal fibrinoid necrosis, hepatitis, osteochondritis, myositis, and airsacculitis. Gram-positive cocci were isolated from several organs by routine bacterial culture. Biotyping identified bacteria as streptococci, whereas 16S ribosomal RNA gene sequencing identified them as S. gallolyticus subsp. pasteurianus. Antibiotic susceptibility profiles revealed that all the strains isolated were sensitive to penicillin and erythromycin with different sensitivity profiles for other antibacterial agents tested. The present study reports the first confirmed case of acute septicemia in turkey poults caused by S. gallolyticus subsp. pasteurianus.
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27
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Novel real-time PCR assays using TaqMan minor groove binder probes for identification of fecal carriage of Streptococcus bovis/Streptococcus equinus complex from rectal swab specimens. J Clin Microbiol 2014; 52:974-6. [PMID: 24391203 DOI: 10.1128/jcm.03253-13] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Real-time PCR based on the recN and gyrB genes was developed to detect four Streptococcus bovis/Streptococcus equinus complex (SBEC) subspecies from rectal swab specimens. The overall prevalence was 35.2%: Streptococcus gallolyticus subsp. gallolyticus (11.1%), S. gallolyticus subsp. pasteurianus (13%), Streptococcus infantarius subsp. coli (20.4%), and S. infantarius subsp. infantarius (11.1%). To conclude, these real-time PCR assays provide a reliable molecular method to detect SBEC pathogenic subspecies from rectal swab specimens.
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28
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Werdan K, Dietz S, Löffler B, Niemann S, Bushnaq H, Silber RE, Peters G, Müller-Werdan U. Mechanisms of infective endocarditis: pathogen–host interaction and risk states. Nat Rev Cardiol 2013; 11:35-50. [DOI: 10.1038/nrcardio.2013.174] [Citation(s) in RCA: 133] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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