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Wright MJ, Bai G. Bacterial second messenger cyclic di-AMP in streptococci. Mol Microbiol 2023; 120:791-804. [PMID: 37898560 DOI: 10.1111/mmi.15187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 10/10/2023] [Accepted: 10/15/2023] [Indexed: 10/30/2023]
Abstract
Cyclic dimeric adenosine monophosphate (c-di-AMP) has been well studied in bacteria, including those of the genus Streptococcus, since the first recognition of this dinucleotide in 2008. Streptococci possess a sole diadenylate cyclase, CdaA, and distinct c-di-AMP phosphodiesterases. Interestingly, cdaA is required for viability of some streptococcal species but not all when streptococci are grown in standard laboratory media. Bacteria of this genus also have distinct c-di-AMP effector proteins, diverse c-di-AMP-signaling pathways, and subsequent biological outcomes. In streptococci, c-di-AMP may influence bacterial growth, morphology, biofilm formation, competence program, drug resistance, and bacterial pathogenesis. c-di-AMP secreted by streptococci has also been shown to interact with the mammalian host and induces immune responses including type I interferon production. In this review, we summarize the reported c-di-AMP networks in seven species of the genus Streptococcus, which cause diverse clinical manifestations, and propose future perspectives to investigate the signaling molecule in these streptococcal pathogens.
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Affiliation(s)
- Michael J Wright
- Department of Internal Medicine, Dartmouth Hitchcock Medical Center, Lebanon, New Hampshire, USA
| | - Guangchun Bai
- Department of Immunology and Microbial Disease, Albany Medical College, Albany, New York, USA
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Ding Y, Wu Q, Guo Y, Li M, Li P, Ma Y, Liu W. Effects of in vitro-induced drug resistance on the virulence of Streptococcus. Vet Med Sci 2021; 7:935-943. [PMID: 33314727 PMCID: PMC8136945 DOI: 10.1002/vms3.404] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 10/25/2020] [Accepted: 11/20/2020] [Indexed: 12/15/2022] Open
Abstract
This study aimed to evaluate the effects of in vitro-induced drug resistance on the virulence of Streptococcus. Micro-dilution method was used to determine the minimal inhibitory concentration (MIC). In vitro-induced drug resistance was conducted for S. agalactiae (CVCC1886) and S. dysgalactiae (CVCC3701) by gradually increasing the antimicrobial concentration (strains were from IVDC, China). PCR was used to detect the resistance and virulence genes of the strains before and after resistance induction. Colony morphology was observed to compare the physiological and biochemical properties of the strains. A total of 88 clean-grade Kunming mice (obtained from Inner Mongolia University, Hohhot, China) were used in half of the lethal dose (LD50) test for detecting the changes in virulence of strains. The results showed that S. agalactiae (CVCC1886) and S. dysgalactiae (CVCC3701) developed resistance against seven kinds of antibiotics, respectively. Resistance and virulence genes of CVCC3701 were changed when treated by the Penicillin-inducing. The growth of the CVCC3701-PEN was decreased compared to the CVCC3701. Virulence test in mice indicated that the LD50 of CVCC3701 before induction and CVCC3701-PEN after induction were 5.45 × 106 and 5.82 × 108 CFU/ml, respectively. Compared with the untreated bacteria, the bacterial virulence was reduced 1.1 × 102 times after resistance induction. In conclusion, S. dysgalactiae (CVCC3701) is a susceptible strain of drug resistance to antibiotics, in vitro-induced drug resistance reduced the virulence of CVCC3701, but the virulence is still existing and also could result in the death of mice. For public health safety, it must be alert to the emergence of drug resistance of Streptococcus in animal production.
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Affiliation(s)
- Yue‐Xia Ding
- College of Coastal Agricultural SciencesGuangdong Ocean UniversityZhanjiangPR China
- Department of Veterinary Pharmacology & ToxicologyCollege of Veterinary MedicineInner Mongolia Agricultural UniversityHohhotPR China
- Laboratory of Clinical Diagnosis and Treatment Techniques for Animal DiseaseMinistry of AgricultureHohhotPR China
| | - Qun Wu
- Research Institute of Agricultural MachineryChinese Academy of Tropical Agricultural SciencesZhanjiangPR China
| | - Yan Guo
- College of Coastal Agricultural SciencesGuangdong Ocean UniversityZhanjiangPR China
| | - Man Li
- Department of Veterinary Pharmacology & ToxicologyCollege of Veterinary MedicineInner Mongolia Agricultural UniversityHohhotPR China
- Laboratory of Clinical Diagnosis and Treatment Techniques for Animal DiseaseMinistry of AgricultureHohhotPR China
| | - Pei‐Feng Li
- Department of Veterinary Pharmacology & ToxicologyCollege of Veterinary MedicineInner Mongolia Agricultural UniversityHohhotPR China
- Laboratory of Clinical Diagnosis and Treatment Techniques for Animal DiseaseMinistry of AgricultureHohhotPR China
| | - Yi Ma
- College of Coastal Agricultural SciencesGuangdong Ocean UniversityZhanjiangPR China
- Maoming BranchGuangdong Laboratory for Lingnan Modern AgricultureMaomingPR China
| | - Wen‐Chao Liu
- College of Coastal Agricultural SciencesGuangdong Ocean UniversityZhanjiangPR China
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Maekawa S, Wang YT, Yoshida T, Wang PC, Chen SC. Group C Streptococcus dysgalactiae infection in fish. J Fish Dis 2020; 43:963-970. [PMID: 32662090 DOI: 10.1111/jfd.13211] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 06/10/2020] [Accepted: 06/12/2020] [Indexed: 06/11/2023]
Abstract
Streptococcus dysgalactiae subsp. dysgalactiae (GCSD) is a Gram-positive, facultative anaerobic bacterium and mostly non-β-haemolytic with Lancefield group C antigen. GCSD infection has been identified in various vertebrates. From 2002 to the present, GCSD infection of fish has been reported to cause severe economic losses in aquaculture farms around the world. Moreover, GCSD isolates from teleosts have been identified in patients with ascending upper limb cellulitis. Therefore, the economic and clinical significance of GCSD has increased in aquaculture, livestock and human health. Many studies have been presented, from the first report of isolated GCSD in fish, to the pathogenesis, characterization, immune responses and vaccine development. In this review, we present the current knowledge of GCSD in teleosts.
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Affiliation(s)
- Shun Maekawa
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung, Taiwan
- International Degree Program of Ornamental Fish Technology and Aquatic Animal Health, International College, National Pingtung University of Science and Technology, Pingtung, Taiwan
- General Research Service Centre, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - Yi-Ting Wang
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - Terutoyo Yoshida
- Department of Marine Biology and Environmental Sciences, Faculty of Agriculture, Miyazaki University, Miyazaki, Japan
| | - Pei-Chi Wang
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung, Taiwan
- International Degree Program of Ornamental Fish Technology and Aquatic Animal Health, International College, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - Shih-Chu Chen
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung, Taiwan
- International Degree Program of Ornamental Fish Technology and Aquatic Animal Health, International College, National Pingtung University of Science and Technology, Pingtung, Taiwan
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Ali S, Mahmood R, Muneer A, Khalil M, Sheikh N, Tahir HM, Andleeb S, Liaqat I, Ashfaq Kiani K, Ali NM, Shah MA. Assessment of spring water microbiology and role of Typha angustata as biosorbent. Water Environ Res 2019; 91:1705-1717. [PMID: 31306534 DOI: 10.1002/wer.1182] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 07/06/2019] [Accepted: 07/08/2019] [Indexed: 06/10/2023]
Abstract
More than 2.1 billion people worldwide are deprived of safe drinking water at homes. The situation is strikingly worse in a developing country like Pakistan where over 69% of the population does not have access to safe drinking water. The present study evaluated a perenial herb, Typha angustata (TA), to purify the spring water. For this purpose, 25 water samples were collected. Majority of samples (20/25) were highly contaminated with microbes ranging colony forming units (CFU) per millileter per Petri dish ranged from 85 to 279 with an average of 136.4. Microbial inhibition of water samples treated with the nonmodified plant extract was observed to be better with the average of 55.5% compared to the treatment with NaOH chemically modified plant where average 46.4% inhibition of microbial load was observed. Four species of microbes such as Bacillus cereus, Pseudomonas aeruginosa, Pseudomonas otitidis, and Streptococcus agalactiae were identified after sequencing. We concluded that T. angustata extract may be used as an antibacterial agent/biosorbent for the purification of drinking water to provide safe drinking water to billions of humans. PRACTITIONER POINTS: Spring water samples were collected from 25 different springs. Spring water samples were analyzed for physiochemical parameters. Spring water samples were found to be contaminated with pathogenic bacteria, that is, Bacillus cereus, Pseudomonas aeruginosa, Pseudomonas otitidis, and Streptococcus agalactiae. Pathogenic bacteria in spring water samples were treated with extract of Typha angustata. Extract of Typha angustata was found as a potential antibacterial agent against pathogenic bacteria.
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Affiliation(s)
- Shaukat Ali
- Department of Zoology, Government College University, Lahore, Pakistan
| | - Rashid Mahmood
- Department of Chemistry, University of Azad Jammu and Kashmir Muzaffarabad, Muzaffarabad, Pakistan
| | - Areesha Muneer
- Department of Zoology, University of Azad Jammu and Kashmir Muzaffarabad, Muzaffarabad, Pakistan
| | - Maryam Khalil
- Department of Zoology, University of Azad Jammu and Kashmir Muzaffarabad, Muzaffarabad, Pakistan
| | - Nazish Sheikh
- Department of Zoology, University of Azad Jammu and Kashmir Muzaffarabad, Muzaffarabad, Pakistan
| | | | - Saiqa Andleeb
- Department of Zoology, University of Azad Jammu and Kashmir Muzaffarabad, Muzaffarabad, Pakistan
| | - Iram Liaqat
- Department of Zoology, Government College University, Lahore, Pakistan
| | - Komal Ashfaq Kiani
- Department of Zoology, University of Azad Jammu and Kashmir Muzaffarabad, Muzaffarabad, Pakistan
| | - Nazish M Ali
- Department of Zoology, Government College University, Lahore, Pakistan
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Hamzah JLB, Tan VKM. Fulminant gas-forming breast abscess associated with synergistic Veillonella infection. Breast J 2019; 25:1263-1265. [PMID: 31286616 DOI: 10.1111/tbj.13453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 05/10/2019] [Indexed: 11/27/2022]
Abstract
We present a rare case of a rapidly fulminant and destructive breast abscess with gas production by the synergistic infection of Veillonella and Streptococcus species. To our knowledge, this is the first reported case of Veillonella infection in the breast. Early recognition, empiric antibiotic cover, aggressive surgical debridement, and drainage are necessary to avoid systemic septicemia. Staged reconstructive breast surgery allows for correction any resultant breast deformity.
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Sobue T, Bertolini M, Thompson A, Peterson DE, Diaz PI, Dongari-Bagtzoglou A. Chemotherapy-induced oral mucositis and associated infections in a novel organotypic model. Mol Oral Microbiol 2018; 33:212-223. [PMID: 29314782 PMCID: PMC5945319 DOI: 10.1111/omi.12214] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/30/2017] [Indexed: 12/31/2022]
Abstract
Oral mucositis is a common side effect of cancer chemotherapy, with significant adverse impact on the delivery of anti-neoplastic treatment. There is a lack of consensus regarding the role of oral commensal microorganisms in the initiation or progression of mucositis because relevant experimental models are non-existent. The goal of this study was to develop an in vitro mucosal injury model that mimics chemotherapy-induced mucositis, where the effect of oral commensals can be studied. A novel organotypic model of chemotherapy-induced mucositis was developed based on a human oral epithelial cell line and a fibroblast-embedded collagen matrix. Treatment of organotypic constructs with 5-fluorouracil (5-FU) reproduced major histopathologic characteristics of oral mucositis, such as DNA synthesis inhibition, apoptosis and cytoplasmic vacuolation, without compromising the three-dimensional structure of the multilayer organotypic mucosa. Although structural integrity of the model was preserved, 5-FU treatment resulted in a widening of epithelial intercellular spaces, characterized by E-cadherin dissolution from adherens junctions. In a neutrophil transmigration assay we discovered that this treatment facilitated transport of neutrophils through epithelial layers. Moreover, 5-FU treatment stimulated key proinflammatory cytokines that are associated with the pathogenesis of oral mucositis. 5-FU treatment of mucosal constructs did not significantly affect fungal or bacterial biofilm growth under the conditions tested in this study; however, it exacerbated the inflammatory response to certain bacterial and fungal commensals. These findings suggest that commensals may play a role in the pathogenesis of oral mucositis by amplifying the proinflammatory signals to mucosa that is injured by cytotoxic chemotherapy.
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Affiliation(s)
- Takanori Sobue
- Department of Oral Health and Diagnostic Sciences, University of Connecticut School of Dental Medicine, 263 Farmington Avenue, Farmington, CT 06030 USA
| | - Martinna Bertolini
- Department of Oral Health and Diagnostic Sciences, University of Connecticut School of Dental Medicine, 263 Farmington Avenue, Farmington, CT 06030 USA
| | - Angela Thompson
- Department of Oral Health and Diagnostic Sciences, University of Connecticut School of Dental Medicine, 263 Farmington Avenue, Farmington, CT 06030 USA
| | - Douglas E. Peterson
- Department of Oral Health and Diagnostic Sciences, University of Connecticut School of Dental Medicine, 263 Farmington Avenue, Farmington, CT 06030 USA
| | - Patricia I. Diaz
- Department of Oral Health and Diagnostic Sciences, University of Connecticut School of Dental Medicine, 263 Farmington Avenue, Farmington, CT 06030 USA
| | - Anna Dongari-Bagtzoglou
- Department of Oral Health and Diagnostic Sciences, University of Connecticut School of Dental Medicine, 263 Farmington Avenue, Farmington, CT 06030 USA
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Coughlin CC, Swink SM, Horwinski J, Sfyroera G, Bugayev J, Grice EA, Yan AC. The preadolescent acne microbiome: A prospective, randomized, pilot study investigating characterization and effects of acne therapy. Pediatr Dermatol 2017; 34:661-664. [PMID: 29024079 DOI: 10.1111/pde.13261] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND/OBJECTIVES Acne, a common pediatric disease, tends to be more comedonal in preadolescents, whereas older individuals are more likely to have inflammatory lesions in addition to comedones. Thus the microbiome of preadolescents may be different. In this pilot study we aimed to characterize the preadolescent acne microbiome, compare the microbiome in preadolescents with and without acne, and investigate changes in the microbiome after topical treatment with benzoyl peroxide or a retinoid in a small cohort of preadolescents. METHODS Participants were 7-10 years of age with (intervention group) or without (control group) acne and were recruited during routine outpatient dermatology visits. Baseline questionnaires, physical examination, and pore strip application were performed for all participants. Intervention group participants were randomized to receive topical therapy with benzoyl peroxide 5% gel or cream or tretinoin 0.025% cream. Participants with acne were followed up 8-10 weeks later and pore strip application was repeated. RESULTS Preadolescents with acne were colonized with a greater diversity of cutaneous bacteria than controls and the most commonly identified bacterium was Streptococcus. The number of bacterial species and phylogenetic diversity decreased after treatment with benzoyl peroxide and tretinoin. CONCLUSION The predominant bacteria in microbiome studies of adult acne is Propionibacterium, whereas in this pediatric population we saw a lot of Streptococcus bacteria. After treatment, the microbiomes of intervention group participants more closely resembled those of control group participants.
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Affiliation(s)
- Carrie C Coughlin
- Division of Dermatology, Departments of Medicine and Pediatrics, School of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Shane M Swink
- Philadelphia College of Osteopathic Medicine, Philadelphia, PA, USA
| | - Joseph Horwinski
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Georgia Sfyroera
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Julia Bugayev
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Elizabeth A Grice
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.,Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Albert C Yan
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.,Section of Dermatology, Children's Hospital of Philadelphia, Philadelphia, PA, USA
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Kreth J, Giacaman RA, Raghavan R, Merritt J. The road less traveled - defining molecular commensalism with Streptococcus sanguinis. Mol Oral Microbiol 2017; 32:181-196. [PMID: 27476770 PMCID: PMC5288394 DOI: 10.1111/omi.12170] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/26/2016] [Indexed: 12/15/2022]
Abstract
The commensal oral microbial flora has evolved with the human host to support colonization of the various intraoral sites without triggering a significant immune response. In exchange, the commensal microbes provide critical protection against invading pathogens. The intrinsic ability of the oral flora to create a symbiotic microbial community with the host can be disturbed, selecting for the overgrowth of a dysbiotic community that can result in dental diseases, such as caries and periodontitis. Although the mechanisms of molecular pathogenesis in oral diseases are well characterized, much less is known about the molecular mechanisms used by the commensal flora to maintain oral health. Here we focus on the commensal species Streptococcus sanguinis, which is found in abundance in the early oral biofilm and is strongly correlated with oral health. Streptococcus sanguinis exhibits a variety of features that make it ideally suited as a model organism to explore the molecular basis for commensalism. As such, this review will describe our current mechanistic understanding of S. sanguinis commensalism and speculate upon its molecular traits that may be exploitable to maintain or restore oral health under conditions that would otherwise lead to disease.
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Affiliation(s)
- Jens Kreth
- Department of Restorative Dentistry, Oregon Health and Science University, Portland, OR, USA
| | - Rodrigo A. Giacaman
- Cariology Unit, Department of Oral Rehabilitation and Interdisciplinary Excellence Research Program on Healthy Aging (PIEI-ES), University of Talca, Talca, Chile
| | - Rahul Raghavan
- Department of Biology and Center for Life in Extreme Environments, Portland State University, Portland, OR, USA
| | - Justin Merritt
- Department of Restorative Dentistry, Oregon Health and Science University, Portland, OR, USA
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