1
|
Jacob J, Veras I, Calderόn O, Porter-Morgan HA, Tan J, Aguilar HE, Elkins WT, Martinez Castro VP, Fulton V, Yousri WK. Possibly pathogenic bacteria in aerosols and foams as a result of aeration remediation in a polluted urban waterway. Folia Microbiol (Praha) 2024; 69:235-246. [PMID: 37777646 PMCID: PMC10876779 DOI: 10.1007/s12223-023-01096-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 09/16/2023] [Indexed: 10/02/2023]
Abstract
Newtown Creek is a tributary of the Hudson River Estuary. It has a legacy of both industrial pollution and sewage pollution and has been designated a Superfund site. To ameliorate the chronically low levels of dissolved oxygen detected in the Creek, the New York City Department of Environmental Protection has been installing aerators. The abundance of various bacteria in the aerosols, foams, and water, at two sites in the Creek, was studied before, during, and after the aeration process. Additionally, aerosols and dispersed foams created by the aeration process were sampled and cultured to determine what unique taxa of bacteria could be grown and identified. Taxa including Actinobacteria and Firmicutes were prevalent in cultures taken from aerosols, whereas Gammaproteobacteria were prevalent in cultures taken from foam. Campylobacteria was found to have a significant presence in both samples taken after the aerators were turned off. These taxa include potentially pathogenic bacteria and are therefore of particular concern.
Collapse
Affiliation(s)
- Joby Jacob
- Natural Sciences Department, LaGuardia Community College, City University of New York, Long Island City, NY, USA.
| | - Ingrid Veras
- Natural Sciences Department, LaGuardia Community College, City University of New York, Long Island City, NY, USA
| | - Olga Calderόn
- Natural Sciences Department, LaGuardia Community College, City University of New York, Long Island City, NY, USA
| | - Holly A Porter-Morgan
- Natural Sciences Department, LaGuardia Community College, City University of New York, Long Island City, NY, USA
| | - Joshua Tan
- Natural Sciences Department, LaGuardia Community College, City University of New York, Long Island City, NY, USA
| | - Harry E Aguilar
- Natural Sciences Department, LaGuardia Community College, City University of New York, Long Island City, NY, USA
| | | | - Veronica P Martinez Castro
- Natural Sciences Department, LaGuardia Community College, City University of New York, Long Island City, NY, USA
| | - Vania Fulton
- Natural Sciences Department, LaGuardia Community College, City University of New York, Long Island City, NY, USA
| | - Wesam K Yousri
- Natural Sciences Department, LaGuardia Community College, City University of New York, Long Island City, NY, USA
| |
Collapse
|
2
|
Ulfat M, Abad Z, Ali NM, Sarwar S, Jabeen K, Abrar A. Screening, biochemical characterization and antibiotics resistance/susceptibility of bacteria isolated from native soil and water samples. BRAZ J BIOL 2024; 84:e254016. [DOI: 10.1590/1519-6984.254016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 12/19/2021] [Indexed: 11/22/2022] Open
Abstract
Abstract The present study was conducted to isolate and characterize bacteria from water and soil sample taken from the Lahore Canal at different sites i.e. Mall Road, Mohlanwal and Khera site. Isolated bacterial strains were identified on the basis of morphological and biochemical tests. Identification was confirmed by culturing bacteria on selective media. Antibiotic resistance test was also performed to observe the resistance of bacteria against different antibiotics. Blood agar test was performed for identification of different pathogenic bacteria. The result revealed that water and soil samples of Lahore Canal Lahore from different sites were contaminated with Escherichia coli, Salmonella sp., Vibrio sp., Bacillus spp., Enterococcus sp. and Staphylococcus spp. Due to presence of these pathogens, this water is not suitable for any domestic and irrigation use. Study also revealed that water of the Lahore Canal is harmful for human health as it is contaminated with bacteria that can cause severe disease e.g., Escherichia coli can cause gastroenteritis, Bacillus spp. can cause nausea and vomiting, Enterococcus may infect urinary tract, Salmonella sp. is responsible for Bacteremia, Staphylococcus spp. can cause mild fever and Vibrio sp. can be the reason of cholera. Thus it is rendered unfit for any kind of human use even other than drinking like swimming, bathing, washing etc., until and unless some remedial measures are employed to eradicate pathogenic microorganisms by WASA and LWMS according to standards of WHO. Similarly, it is quite harmful, when and where ever it is used for irrigation without proper treatment.
Collapse
Affiliation(s)
- M. Ulfat
- GC University, Pakistan; Lahore College for Women University, Pakistan
| | | | | | - S. Sarwar
- Lahore College for Women University, Pakistan
| | - K. Jabeen
- Lahore College for Women University, Pakistan
| | - A. Abrar
- Lahore College for Women University, Pakistan
| |
Collapse
|
3
|
Manara S, Beghini F, Masetti G, Armanini F, Geat D, Galligioni G, Segata N, Farina S, Cristofolini M. Thermal Therapy Modulation of the Psoriasis-Associated Skin and Gut Microbiome. Dermatol Ther (Heidelb) 2023; 13:2769-2783. [PMID: 37768448 PMCID: PMC10613183 DOI: 10.1007/s13555-023-01036-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 09/08/2023] [Indexed: 09/29/2023] Open
Abstract
INTRODUCTION Psoriasis is a systemic immune-mediated disease primarily manifesting as skin redness and inflammation. Balneotherapy proved to be a successful non-pharmacological option to reduce the skin areas affected by the disease, but the specific mechanisms underlying this effect have not been elucidated yet. Here we test the hypothesis that the effect of thermal treatments on psoriatic lesions could be partially mediated by changes in the resident microbial population, i.e., the microbiome. METHODS In this study, we enrolled patients with psoriasis and monitored changes in their skin and gut microbiome after a 12-bath balneotherapy course with a combination of 16S rRNA amplicon sequencing and metagenomics. Changes in the resident microbiome were then correlated with thermal therapy outcomes evaluated as changes in Psoriasis Area and Severity Index (PASI) and Body Surface Area index (BSA). RESULTS The amplicon sequencing analysis of the skin microbiome showed that after thermal treatment the microbiome composition of affected areas improved to approach that typical of unaffected skin. We moreover identified some low-abundance bacterial biomarkers indicative of disease status and treatment efficacy, and we showed via metagenomic sequencing that thermal treatments and thermal water drinking affect the fecal microbiome to host more species associated with favorable metabolic health. CONCLUSIONS Changes in lower-abundance microbial taxa presence and abundance could be the basis for the positive effect of thermal water treatment and drinking on the cutaneous and systemic symptomatology of psoriasis.
Collapse
Affiliation(s)
- Serena Manara
- Laboratory of Computational Metagenomics, Department CIBIO, University of Trento, Via Sommarive 9, Povo, 38123, Trento, Italy
| | - Francesco Beghini
- Laboratory of Computational Metagenomics, Department CIBIO, University of Trento, Via Sommarive 9, Povo, 38123, Trento, Italy
- Yale Institute for Network Science, Yale University, New Haven, CT, USA
| | - Giulia Masetti
- Laboratory of Computational Metagenomics, Department CIBIO, University of Trento, Via Sommarive 9, Povo, 38123, Trento, Italy
| | - Federica Armanini
- Laboratory of Computational Metagenomics, Department CIBIO, University of Trento, Via Sommarive 9, Povo, 38123, Trento, Italy
| | - Davide Geat
- Department of Dermatology, ASST Spedali Civili Di Brescia, Brescia, Italy
| | - Giulia Galligioni
- Clinical Unit of Occupational Medicine, Health Agency Trento, Trento, Italy
| | - Nicola Segata
- Laboratory of Computational Metagenomics, Department CIBIO, University of Trento, Via Sommarive 9, Povo, 38123, Trento, Italy.
| | | | | |
Collapse
|
4
|
Microbial Profile and Safety of Chicken Eggs from a Poultry Farm and Small-Scale Vendors in Hawassa, Southern Ethiopia. J FOOD QUALITY 2022. [DOI: 10.1155/2022/7483253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
A freshly laid hen’s egg is devoid of microorganism, but soon after oviposition, it is contaminated by various spoilage and pathogenic microorganisms. The aim of this study was to assess the microbial profile and safety of chicken eggs in Hawassa City. A total of 60 egg samples were collected from Hawassa University Poultry Farm (HUPF) and small-scale vendors in Hawassa. The samples were analyzed for aerobic mesophilic bacterial count (AMBC), Staphylococcal count (SC), Enterobacteriaceae count (EC), total coliform count (TCC), fecal coliform count (FCC), and yeast and mold count (YMC). Moreover, the dominant mesophilic aerobic bacterial genera and common bacterial pathogens were identified by phenotypic methods. Accordingly, the mean aerobic mesophilic bacterial load of the shell surface rinsate of the egg samples ranged from 1.22 log10 CFU/ml to 9.7 log10 CFU/ml, while that of the internal contents ranged from 1.52 log CFU/ml to 9.36 log CFU/ml. The microbial load values of the egg contents were beyond the international recommended acceptable limits and suggested incipient spoilage. The mesophilic aerobic bacterial genera of the shell and internal contents of the egg samples were similarly dominated by Pseudomonas, Micrococcus, and Staphylococcus. The incidence of E. coli in shell rinsate and egg content was 10% (6 of 60) and 1.67% (1 of 60), respectively. Salmonellae were detected in shell rinsate of six egg samples (10%) and in the contents of eight samples (13.33%), all from small-scale vendors. These findings call for vigilant exercise of good agricultural and hygienic practices by primary producers and retailers.
Collapse
|
5
|
Zhang Y, Seminario-Vidal L, Cohen L, Hussaini M, Yao J, Rutenberg D, Kim Y, Giualiano A, Robinson LA, Sokol L. "Alterations in the Skin Microbiota Are Associated With Symptom Severity in Mycosis Fungoides". Front Cell Infect Microbiol 2022; 12:850509. [PMID: 35656034 PMCID: PMC9152451 DOI: 10.3389/fcimb.2022.850509] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 03/30/2022] [Indexed: 12/28/2022] Open
Abstract
Cutaneous T cell lymphoma (CTCL), a non-Hodgkin lymphoma, is thought to arise from mature tissue-resident memory T cells. The most common subtypes include Mycosis Fungoides and Sezary Syndrome. The role of skin microbiota remains unclear in the symptom manifestation of MF. Among 39 patients with MF, we analyzed bacteria colonizing MF lesions and non-lesional skin in the contralateral side and characterized regional changes in the skin microbiota related to MF involvement using the difference in relative abundance of each genus between lesional and contralateral non-lesional skin. We investigated the relationship between these skin microbiota alterations and symptom severity. No statistically significant difference was found in bacterial diversity and richness between lesional and non-lesional skin. Different skin microbiota signatures were associated with different symptoms. More pronounced erythema in the lesions was associated with an increase in Staphylococcus. Pain and thick skin in the lesions were associated with a decrease in Propionibacterium. The results of this pilot study suggest that the skin microbiota plays an important role in changing skin phenotypes among patients with MF. Larger skin microbiota studies are needed to confirm these findings and support the use of antibiotic treatment to mitigate CTCL symptoms.
Collapse
Affiliation(s)
- Yumeng Zhang
- Department of Medicine, University of South Florida, Tampa, FL, United States
- Department of Malignant Hematology, Moffitt Cancer Center, Tampa, FL, United States
| | - Lucia Seminario-Vidal
- Department of Cutaneous Oncology, Moffitt Cancer Center, Tampa, FL, United States
- Department of Dermatology, University of South Florida, Tampa, FL, United States
| | - Leah Cohen
- Department of Dermatology, University of Pennsylvania, Philadelphia, PA, United States
| | - Mohammad Hussaini
- Department of Pathology, Moffitt Cancer Center, Tampa, FL, United States
| | - Jiqiang Yao
- Department of Biostatistics and Bioinformatics, Moffitt Cancer Center, Tampa, FL, United States
| | - David Rutenberg
- Department of Medicine, University of South Florida, Tampa, FL, United States
| | - Youngchul Kim
- Department of Biostatistics and Bioinformatics, Moffitt Cancer Center, Tampa, FL, United States
| | - Anna Giualiano
- Department of Cancer Epidemiology, Moffitt Cancer Center, Tampa, FL, United States
| | - Lary A. Robinson
- Department of Thoracic Oncology, Moffitt Cancer Center, Tampa, FL, United States
| | - Lubomir Sokol
- Department of Malignant Hematology, Moffitt Cancer Center, Tampa, FL, United States
| |
Collapse
|
6
|
Gund MP, Boros G, Hannig M, Thieme-Ruffing S, Gärtner B, Rohrer TR, Simon A, Rupf S. Bacterial contamination of forehead skin and surgical mask in aerosol-producing dental treatment. J Oral Microbiol 2021; 13:1978731. [PMID: 34567438 PMCID: PMC8462870 DOI: 10.1080/20002297.2021.1978731] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Background Bacterial contamination of dental professionals’ facial skin and protective equipment from treatment-related aerosols and droplets are poorly studied. Methods This prospective study analyzed samples from 67 consecutive aerosol-producing dental treatments. Sterile nylon swabs served to collect samples from dental professionals’ foreheads before and after exposure. Contact samples were obtained from used surgical masks. Samples were incubated on agar under aerobic and anaerobic conditions. Bacteria were classified by MALDI-TOF mass spectrometry. We determined the frequencies of obligate and facultative oral bacteria and scored bacterial growth (0: none; 1: < 100 colonies; 2: >100 colonies; 3: dense). Results Bacteria were detected in 95% of skin-swab and 76% of mask samples. Median bacterial scores were 2 for forehead samples before and after treatment, and 1 for masks. Obligate and facultative oral bacteria were more frequent (6% and 30%) in samples from exposed forehead skin, which also showed increased bacterial scores (28%). 5% of samples contained methicillin-sensitive Staphylococcus aureus; 3% contained obligate anaerobes. Conclusion Exposed forehead skin was significantly less contaminated with obligate oral bacteria than expected based on surgical mask findings. Exposed forehead skin showed increased contamination attributable to aerosol-producing procedures. The forehead’s physiological skin microbiota may offer some protection against bacterial contamination.
Collapse
Affiliation(s)
- Madline P Gund
- Clinic Department of Operative Dentistry, Periodontology and Preventive Dentistry, Saarland University, Homburg, Germany.,Oral Surgery Clinic, German Armed Forces Central Hospital; Koblenz, Germany
| | - Gabor Boros
- Oral Surgery Clinic, German Armed Forces Central Hospital; Koblenz, Germany
| | - Matthias Hannig
- Clinic Department of Operative Dentistry, Periodontology and Preventive Dentistry, Saarland University, Homburg, Germany
| | - Sigrid Thieme-Ruffing
- Institute of Medical Microbiology and Hygiene, Department of Hospital Hygiene, Saarland University, Homburg, Germany
| | - Barbara Gärtner
- Institute of Medical Microbiology and Hygiene, Department of Hospital Hygiene, Saarland University, Homburg, Germany
| | - Tilman R Rohrer
- University Children's Hospital, Saarland University Medical Center, Homburg, Germany
| | - Arne Simon
- University Children's Hospital, Saarland University Medical Center, Homburg, Germany
| | - Stefan Rupf
- Clinic Department of Operative Dentistry, Periodontology and Preventive Dentistry, Saarland University, Homburg, Germany.,Chair of Synoptic Dentistry, Saarland University, Homburg, Germany
| |
Collapse
|
7
|
Zeng J, Zhang G, Chen C, Li K, Wen Y, Zhao J, Wu P. Alterations in Urobiome in Patients With Bladder Cancer and Implications for Clinical Outcome: A Single-Institution Study. Front Cell Infect Microbiol 2020; 10:555508. [PMID: 33384966 PMCID: PMC7769872 DOI: 10.3389/fcimb.2020.555508] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 11/16/2020] [Indexed: 12/14/2022] Open
Abstract
Numerous studies indicate that resident microbiome exists in urine of healthy individuals and dysbiosis of the urobiome (urinary microbiome) may be associated with pathological conditions. This study was performed to characterize the alterations in urobiome and explore its implications of clinical outcome in male patients with bladder cancer. 62 male patients with bladder cancer and 19 non-neoplastic controls were recruited. The follow-up study cohort included 40 patients who were diagnosed with non-muscle invasive bladder cancer (NMIBC) and underwent transurethral resection of bladder tumor (TURBT). Mid-stream urine samples were collected from all the participants the day before cystoscopy. DNA was extracted from urine pellet samples and processed for high throughput 16S rRNA amplicon sequencing of the V4 region using Illumina MiSeq. Sequencing reads were filtered using QIIME and clustered using UPARSE. We found bacterial richness indices (Observed Species index, Chao1 index, Ace index; all P < 0.01) increased in cancer group when compared with non-neoplastic group, while there were no differences in Shannon and Simpson index between two groups. During a median follow-up time of 12 (5.25–25) months, 5/40 (12.5%)of the patients developed recurrence and no patient suffered from progression to muscle-invasive disease. Species diversity of the microbiome was significantly higher in the recurrence group compared with non-recurrence group in patients with NMIBC after TURBT. The LEfSe analysis demonstrated that 9 genera were increased (e.g., Micrococcus and Brachybacterium) in recurrence group. To our knowledge we report the relative comprehensive study to date of the male bladder cancer urinary microbiome and its relationship to pathogenesis and clinical outcomes. Given our preliminary data, additional studies evaluating the urine microbiome in relation to clinical outcomes are warranted to improve our understanding of tumor recurrence after TURBT.
Collapse
Affiliation(s)
- Jiarong Zeng
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Urology, Meizhou People's Hospital (Huangtang Hospital), Meizhou, China
| | - Guihao Zhang
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Urology, Meizhou People's Hospital (Huangtang Hospital), Meizhou, China
| | - Chunxiao Chen
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Kun Li
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yuehui Wen
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Jie Zhao
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Peng Wu
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Clinical Microbiota Center, Nanfang Hospital, Southern Medical University, Guangzhou, China
| |
Collapse
|
8
|
Diet Breadth Affects Bacterial Identity but Not Diversity in the Pollen Provisions of Closely Related Polylectic and Oligolectic Bees. INSECTS 2020; 11:insects11090645. [PMID: 32962223 PMCID: PMC7564857 DOI: 10.3390/insects11090645] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 09/02/2020] [Accepted: 09/17/2020] [Indexed: 12/18/2022]
Abstract
Simple Summary Solitary bees are important pollinators in managed and wild ecosystems. Across the bee phylogeny, bees may forage on a single species of plant, few plant species, or a broad diversity of plants. During foraging, these bees are often exposed to microbes, and in turn, may inoculate the brood cell and pollen provision of their offspring with these microbes. It is becoming evident that pollen-associated microbes are important to bee health, but it is not known how diet breadth impacts bees’ exposure to microbes. In this study, we collected pollen provisions from the bees Osmia lignaria and Osmia ribifloris at four different sites, then characterized the bacterial populations within the pollen provisions with 16S rRNA gene sequencing. We found that diet breadth did not have large effects on the bacteria found in the pollen provisions. We also note that the bacterial communities were slightly different between bee species and site, and there was minimal overlap in the unique bacterial variants between sites and bee species too. Our research supports the hypothesis of environmental transmission for solitary bee microbes, and we suggest future studies investigate the impacts of microbes on larval health. Abstract Mounting evidence suggests that microbes found in the pollen provisions of wild and solitary bees are important drivers of larval development. As these microbes are also known to be transmitted via the environment, most likely from flowers, the diet breadth of a bee may affect the diversity and identity of the microbes that occur in its pollen provisions. Here, we tested the hypothesis that, due to the importance of floral transmission of microbes, diet breadth affects pollen provision microbial community composition. We collected pollen provisions at four sites from the polylectic bee Osmia lignaria and the oligolectic bee Osmia ribifloris. We used high-throughput sequencing of the bacterial 16S rRNA gene to characterize the bacteria found in these provisions. We found minimal overlap in the specific bacterial variants in pollen provisions across the host species, even when the bees were constrained to foraging from the same flowers in cages at one site. Similarly, there was minimal overlap in the specific bacterial variants across sites, even within the same host species. Together, these findings highlight the importance of environmental transmission and host specific sorting influenced by diet breadth for microbes found in pollen provisions. Future studies addressing the functional consequences of this filtering, along with tests for differences between more species of oligoletic and polylectic bees will provide rich insights into the microbial ecology of solitary bees.
Collapse
|
9
|
Gilat R, Mitchnik I, Beit Ner E, Shohat N, Tamir E, Weil YA, Lazarovitch T, Agar G. Bacterial contamination of protective lead garments in an operating room setting. J Infect Prev 2020; 21:234-240. [PMID: 33408761 DOI: 10.1177/1757177420947466] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Accepted: 07/12/2020] [Indexed: 01/08/2023] Open
Abstract
Background Protective lead garments (PLG) worn in the operating room are a potential source for bacterial colonisation and thus may increase the risk of intraoperative infection. The clinical significance of such bacterial contamination has yet been established. Although disinfection protocols have been employed, their effectiveness is also unknown. Objective We sought to describe and compare the bacterial profile of PLGs with a focus on common pathogens involved in surgical site infections (SSI) and prosthetic joint infections (PJI). Methods We studied body aprons and neck-thyroid protective shields. We sampled 20 body aprons and 21 neck PLGs, swabbing the inside and outside of the PLGs. Swabs were cultured on different media and the results were assessed and compared. Results Of PLGs, 87.8% were contaminated. The neck-thyroid shield PLGs was generally more contaminated than body apron PLGs and exhibited significantly higher loads of Staphylococcus epidermidis (P = 0.048). Other pathogen cultured were Micrococcus spp., Acinetobacter lwoffii (A. lwoffii), Bacillus species (Bacillus spp.), Moraxella osloensis (M. osloensis) and Pseudomonas stutzeri (P. stutzeri). No other common pathogens associated with SSI or PJI were detected. Conclusions PLGs are heavily contaminated despite regular cleaning protocols. Neck PLGs are highly contaminated with potentially infectious agents. As neck PLGs are often directly exposed above the surgical sterile gown and the surgical field, measures should be undertaken to reduce their exposure and bacterial load, perhaps by suggesting users consider avoiding the use of intraoperative fluoroscopy when possible or alternatively supporting the use of body exhaust suits when PLGs are needed.
Collapse
Affiliation(s)
- Ron Gilat
- Midwest Orthopaedics at Rush University Medical Center, Chicago, IL, USA.,Department of Orthopedic Surgery, Yitzhak Shamir Medical Center, Zerifin, Israel.,Affiliated to the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Ilan Mitchnik
- Department of Orthopedic Surgery, Yitzhak Shamir Medical Center, Zerifin, Israel.,Affiliated to the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Eran Beit Ner
- Department of Orthopedic Surgery, Yitzhak Shamir Medical Center, Zerifin, Israel.,Affiliated to the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Noam Shohat
- Department of Orthopedic Surgery, Yitzhak Shamir Medical Center, Zerifin, Israel.,Affiliated to the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Eran Tamir
- Department of Orthopedic Surgery, Yitzhak Shamir Medical Center, Zerifin, Israel.,Affiliated to the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Yoram A Weil
- Hadassah Medical Center, Jerusalem, Israel.,Affiliated to the Hebrew University, Jerusalem, Israel
| | - Tsilia Lazarovitch
- Department of Orthopedic Surgery, Yitzhak Shamir Medical Center, Zerifin, Israel.,Affiliated to the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Gabriel Agar
- Department of Orthopedic Surgery, Yitzhak Shamir Medical Center, Zerifin, Israel.,Affiliated to the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| |
Collapse
|
10
|
Cicciarella Modica D, Maurici M, D’Alò GL, Mozzetti C, Messina A, Distefano A, Pica F, De Filippis P. Taking Screenshots of the Invisible: A Study on Bacterial Contamination of Mobile Phones from University Students of Healthcare Professions in Rome, Italy. Microorganisms 2020; 8:microorganisms8071075. [PMID: 32707676 PMCID: PMC7409191 DOI: 10.3390/microorganisms8071075] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 07/15/2020] [Accepted: 07/16/2020] [Indexed: 01/07/2023] Open
Abstract
Mobile phones (MPs) are commonly used both in the personal and professional life. We assessed microbiological contamination of MPs from 108 students in healthcare professions (HPs), in relation to their demographic characteristics and MPs handling habits, collected by means of a questionnaire. Cultural and biochemical tests were performed, and statistical analyses were carried out. Staphylococci were present in 85% of MPs, Enterococci in 37%, Coliforms in 6.5%; E. coli was never detected. Staphylococcus epidermidis was the most frequently isolated staphylococcal species (72% of MPs), followed by S. capitis (14%), S. saprophyticus, S. warneri, S. xylosus (6%), and by S. aureus (4%). Heterotrophic Plate Counts (HPC) at 37 °C, ranged from 0 to 1.2 × 104 CFU/dm2 (mean = 362 CFU/dm2). In univariate analysis, the male gender only was significantly associated with higher HPCs and enterococcal contamination. Multiple linear regression models explained only 17% and 16% of the HPC 37 °C and staphylococcal load variability, respectively. Developing specific guidelines for a hygienic use of MPs in clinical settings, for preventing cross-infection risks, is advisable, as well as introducing specific training programs to HP students. MPs decontamination procedures could also be implemented in the community.
Collapse
Affiliation(s)
| | - Massimo Maurici
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, 00133 Rome, Italy; (C.M.); (A.M.); (A.D.); (P.D.F.)
- Correspondence: (M.M.); (G.L.D.); Tel.: +39-327-8218-514 (G.L.D.)
| | - Gian Loreto D’Alò
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, 00133 Rome, Italy; (C.M.); (A.M.); (A.D.); (P.D.F.)
- Department of Epidemiology, Lazio Regional Health Service, 00154 Rome, Italy
- Correspondence: (M.M.); (G.L.D.); Tel.: +39-327-8218-514 (G.L.D.)
| | - Cinzia Mozzetti
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, 00133 Rome, Italy; (C.M.); (A.M.); (A.D.); (P.D.F.)
| | - Alessandra Messina
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, 00133 Rome, Italy; (C.M.); (A.M.); (A.D.); (P.D.F.)
| | - Alessandra Distefano
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, 00133 Rome, Italy; (C.M.); (A.M.); (A.D.); (P.D.F.)
| | - Francesca Pica
- Department of Experimental Medicine, University of Rome Tor Vergata, 00133 Rome, Italy;
| | - Patrizia De Filippis
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, 00133 Rome, Italy; (C.M.); (A.M.); (A.D.); (P.D.F.)
| |
Collapse
|
11
|
Marone A, Kane CT, Mbengue M, Jenkins GS, Niang DN, Drame MS, Gernand JM. Characterization of Bacteria on Aerosols From Dust Events in Dakar, Senegal, West Africa. GEOHEALTH 2020; 4:e2019GH000216. [PMID: 32490303 PMCID: PMC7262684 DOI: 10.1029/2019gh000216] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 03/01/2020] [Accepted: 04/15/2020] [Indexed: 05/31/2023]
Abstract
We identify bacteria types on collected dust samples in Dakar Senegal, a region that experiences frequent Saharan dust events. We use classical techniques to identify bacteria types from dust samples. Seventy-seven bacteria types are identified from samples collected by spatula and the QuickTake® 30 air sampling pump. The dominant groups in the first batch of 51 bacteria (collected via deposition) are Micrococcus (33.33%), Bacillus (13.73%), Kytococcus (11.76%), Pseudomonas (9.80%), and Burkholderia (7.84%) and dominants in the second batch of 26 bacteria (collected with aerosol sampling vacuum pump): Pseudomonas (38.61%), Burkholderia (26.92%), Micrococcus (11.54%), and Brucella spp (7.69%). These bacteria are found in earlier studies from desert sources and can potentially cause respiratory diseases to exposed populations. Future work will use molecular methods is necessary to search for additional pathogens, including viruses on dust aerosols.
Collapse
Affiliation(s)
- Alioune Marone
- Laboratory of Applied Microbiology and Industrial Engineering, École Supériure Polytechnique (ESP)Cheikh Anta Diop UniversityDakarSenegal
| | - Coumba Touré Kane
- Laboratory of Applied Microbiology and Industrial Engineering, École Supériure Polytechnique (ESP)Cheikh Anta Diop UniversityDakarSenegal
- Institute of Health ResearchEpidemiological Surveillance and Training (IRESSEF)DiamniadioSenegal
| | - Malick Mbengue
- Laboratory of Applied Microbiology and Industrial Engineering, École Supériure Polytechnique (ESP)Cheikh Anta Diop UniversityDakarSenegal
| | - Gregory S. Jenkins
- Department of Meteorology and Atmospheric SciencePennsylvania State UniversityUniversity ParkPAUSA
| | - Demba Ndao Niang
- Laboratory for Atmospheric‐Oceanic Physics Simeon Fongang, École Supériure Polytechnique (ESP)Cheikh Anta Diop UniversityDakarSenegal
| | - Mamadou Simina Drame
- Laboratory for Atmospheric‐Oceanic Physics Simeon Fongang, École Supériure Polytechnique (ESP)Cheikh Anta Diop UniversityDakarSenegal
| | - Jeremy M. Gernand
- Department of Mineral EngineeringThe Pennsylvania State UniversityUniversity ParkPAUSA
| |
Collapse
|
12
|
Pircher A, Koeck S, Schatzlmayr J, Finkenstedt A, Nairz M, Wanner D, Griesmacher A, Tilg H, Wolf D, Zoller H. Cloak and dagger - secondary hemophygocytic lymphohistiocytosis caused by intravenous autoinfection. Am J Hematol 2020; 95:330-332. [PMID: 31849105 PMCID: PMC7028013 DOI: 10.1002/ajh.25704] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 12/10/2019] [Accepted: 12/12/2019] [Indexed: 12/24/2022]
Affiliation(s)
- Andreas Pircher
- Department of Internal Medicine VMedical University of Innsbruck Innsbruck Austria
| | - Stefan Koeck
- Department of Internal Medicine VMedical University of Innsbruck Innsbruck Austria
| | - Johannes Schatzlmayr
- Department of Internal Medicine VMedical University of Innsbruck Innsbruck Austria
| | - Armin Finkenstedt
- Department of Internal Medicine IMedical University of Innsbruck Innsbruck Austria
| | - Manfred Nairz
- Department of Internal Medicine IIMedical University of Innsbruck Innsbruck Austria
| | - David Wanner
- Department of Internal Medicine VMedical University of Innsbruck Innsbruck Austria
| | - Andrea Griesmacher
- Central Institute of Medical and Chemical Laboratory DiagnosticsUniversity Hospital of Innsbruck Innsbruck Austria
| | - Herbert Tilg
- Department of Internal Medicine IMedical University of Innsbruck Innsbruck Austria
| | - Dominik Wolf
- Department of Internal Medicine VMedical University of Innsbruck Innsbruck Austria
| | - Heinz Zoller
- Department of Internal Medicine IMedical University of Innsbruck Innsbruck Austria
| |
Collapse
|
13
|
Thota CK, Berger AA, Harms B, Seidel M, Böttcher C, von Berlepsch H, Xie C, Süssmuth R, Roth C, Koksch B. Short self‐assembling cationic antimicrobial peptide mimetics based on a 3,5‐diaminobenzoic acid scaffold. Pept Sci (Hoboken) 2019. [DOI: 10.1002/pep2.24130] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Chaitanya K. Thota
- Department of Chemistry and BiochemistryFreie Universität Berlin Berlin Germany
| | - Allison A. Berger
- Department of Chemistry and BiochemistryFreie Universität Berlin Berlin Germany
| | - Björn Harms
- Department of Chemistry and BiochemistryFreie Universität Berlin Berlin Germany
| | - Maria Seidel
- Institute of ChemistryTechnische Universität Berlin Berlin Germany
| | - Christoph Böttcher
- Research Center for Electron MicroscopyFreie Universität Berlin Berlin Germany
| | - Hans von Berlepsch
- Research Center for Electron MicroscopyFreie Universität Berlin Berlin Germany
| | - Chaunxiong Xie
- Department of Chemistry and BiochemistryFreie Universität Berlin Berlin Germany
| | | | - Christian Roth
- Department of Biomolecular SystemsMax Planck Institute of Colloids and Interfaces Berlin Germany
| | - Beate Koksch
- Department of Chemistry and BiochemistryFreie Universität Berlin Berlin Germany
| |
Collapse
|
14
|
Identification and Phylogenetic Profiling of Bacterial Populations in Perna perna L. JOURNAL OF PURE AND APPLIED MICROBIOLOGY 2019. [DOI: 10.22207/jpam.13.1.07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
15
|
Yang K, Li L, Wang Y, Xue S, Han Y, Liu J. Airborne bacteria in a wastewater treatment plant: Emission characterization, source analysis and health risk assessment. WATER RESEARCH 2019; 149:596-606. [PMID: 30522052 DOI: 10.1016/j.watres.2018.11.027] [Citation(s) in RCA: 99] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 09/24/2018] [Accepted: 11/11/2018] [Indexed: 05/21/2023]
Abstract
Wastewater treatment plants (WWTPs) are major sources of airborne bacteria, which could pose health risks to WWTP workers and surrounding residents. In this study, air samples were collected from various treatment facilities of a typical WWTP. Community compositions of airborne bacteria were identified by high-throughput sequencing technique. SourceTracker was used to determine the percentages of airborne bacteria from wastewater, sludge, ambient air, and other environment. Health risks associated with airborne bacteria were estimated based on the average daily dose rates (ADD) of exposure by inhalation and skin contact. Concentrations of airborne bacteria varied in a wide range of 23-4878 CFU/m3. The main emission sources of airborne bacteria were treatment facilities with aeration, mechanical agitation, and located indoors. For treatment facilities located indoors, higher percentages of airborne bacteria were associated with wastewater and sludge, while more airborne bacteria were originated from the ambient air for outdoor installations. Opportunistic pathogens such as Micrococcus, Bacteroides, Chryseobacterium, Pseudomonas, and Acinetobacter, were detected in airborne bacteria. Inhalation was the main pathway for on-site workers exposure to airborne bacteria. Due to the presence of opportunistic pathogens, strict control measures should be employed in WWTPs to reduce the infection risks.
Collapse
Affiliation(s)
- Kaixiong Yang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing, 101408, China.
| | - Lin Li
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing, 101408, China.
| | - Yanjie Wang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing, 101408, China.
| | - Song Xue
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing, 101408, China.
| | - Yunping Han
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing, 101408, China.
| | - Junxin Liu
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing, 101408, China.
| |
Collapse
|
16
|
|
17
|
Gu J, Liu T, Sadiq FA, Yang H, Yuan L, Zhang G, He G. Biogenic amines content and assessment of bacterial and fungal diversity in stinky tofu – A traditional fermented soy curd. Lebensm Wiss Technol 2018. [DOI: 10.1016/j.lwt.2017.08.085] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
18
|
Sobolewska B, Buhl M, Liese J, Ziemssen F. Slit lamps and lenses: a potential source of nosocomial infections? Eye (Lond) 2018; 32:1021-1027. [PMID: 29379104 DOI: 10.1038/s41433-017-0004-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 08/08/2017] [Accepted: 11/30/2017] [Indexed: 11/09/2022] Open
Abstract
PURPOSE The aim of the study was to evaluate the bacterial contamination level of contact surfaces on slit lamps and the grip areas of lenses. METHODS Within unannounced audits, two regions of the slit lamps (headrest and joystick), indirect ophthalmoscopy devices, and ultrasound probes were obtained with rayon-tipped swab. Non-contact lenses used for indirect fundoscopy were pressed on RODAC (Replicate Organism Detection and Counting) plates. One hundred and eighty-one surfaces were sampled. The total number of colony-forming units was assessed and bacterial species were identified. Spa-typing and antimicrobial susceptibility testing were performed from Staphylococcus aureus isolates. RESULTS Among the total bacterial isolates from ophthalmological equipment (lenses: 51 of 78, slit lamps: 43 of 88, ophthalmoscopy helmets: 3 of 8, ultrasound probes: 2 of 7), coagulase-negative staphylococci (CNS) was most frequently found, followed by Micrococcus spp. (lenses vs. slit lamps: P < 0.001 and P = 0.01, respectively). The bacterial contamination of lenses (76%) was significantly higher than that of slit lamps (54%) (P < 0.003). A significantly higher contamination with CNS was observed on lenses from residents vs. from consultants (78% vs. 35%, P = 0.01). A total of seven different spa-types of S. aureus were isolated. No correlation was found between S. aureus contamination of different ophthalmological equipments (Spearman's rank correlation coefficient, ρ = 0.04, P = 0.75). Methicillin-resistant S. aureus was not detected. CONCLUSION Bacterial species of the normal skin flora were isolated from the ophthalmological equipment. The bacterial contamination of the portable devices was significantly higher than that of slit lamps. Therefore, proper hygiene of the mobile instruments should be monitored in order to prevent transmission of bacteria in residents and consultants.
Collapse
Affiliation(s)
- Bianka Sobolewska
- Center for Ophthalmology, Eberhard-Karls University, Tuebingen, Germany.
| | - Michael Buhl
- Institute of Medical Mircrobiology and Hygiene, Eberhard-Karls University, Tuebingen, Germany
| | - Jan Liese
- Institute of Medical Mircrobiology and Hygiene, Eberhard-Karls University, Tuebingen, Germany
| | - Focke Ziemssen
- Center for Ophthalmology, Eberhard-Karls University, Tuebingen, Germany
| |
Collapse
|
19
|
Yeom JR, Yoon SU, Kim CG. Quantification of residual antibiotics in cow manure being spread over agricultural land and assessment of their behavioral effects on antibiotic resistant bacteria. CHEMOSPHERE 2017; 182:771-780. [PMID: 28535485 DOI: 10.1016/j.chemosphere.2017.05.084] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Revised: 05/09/2017] [Accepted: 05/13/2017] [Indexed: 06/07/2023]
Abstract
Antibiotic resistant bacteria (ARB) in livestock manure used as fertilizer and spread over agriculture land, may pose a threat to the health of humans. Considering this, the concentrations of tetracycline (TC), oxytetracycline (OTC), and sulfathiazole (STZ) in the surface soil were quantified using LC-MS. These antibiotics have been used in livestock and are found in fertilizer produced from livestock excretions. Species of ABR were identified using 16S rDNA. Soil samples were collected at depths of 0, 7, and 15 cm from farmland in Incheon (South Korea). In the surface soil, three compounds were detected: TC (17.74 μg/kg), OTC (0.78 μg/kg), and STZ (0.23 μg/kg). However, except for STZ, antibiotics were not detected in the deeper samples. Overall, TC can form a chelated complex with cations, which consequently enhances its adsorption to the organic matter and metals in soil. This property can significantly reduce the mobility of TC (to lower than that of STZ). The result of 16S rDNA gene analysis indicated that Pseudomonas spp., Arthrobacter spp., and Rhodococcus spp. showed persistent resistance to the three antibiotics tested. DNA quantification results revealed strong resistance of Pseudomonas spp. to STZ, whereas Arthrobacter spp. and Rhodococcus spp. had resistance to TC and OTC. Antibiotics biodegradation suggested ability of ARB to grow in soil samples in presence of residual antibiotics during 13 days incubation. The concentrations of STZ, TC, and OTC reduced as much as 23.53, 35.60 and 66.88%, respectively.
Collapse
Affiliation(s)
- Ji-Ran Yeom
- Department of Environment Engineering, INHA University, Incheon, South Korea
| | - Soon-Uk Yoon
- Department of Environment Engineering, INHA University, Incheon, South Korea
| | - Chang-Gyun Kim
- Department of Environment Engineering, INHA University, Incheon, South Korea.
| |
Collapse
|
20
|
Guillaumin J, Olp NM, Magnusson KD, Butler AL, Daniels JB. Influence of hang time and location on bacterial contamination of intravenous bags in a veterinary emergency and critical care setting. J Vet Emerg Crit Care (San Antonio) 2017; 27:548-554. [PMID: 28834108 DOI: 10.1111/vec.12647] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 02/07/2016] [Accepted: 03/17/2016] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To assess the rate of bacterial contamination of fluid and ports in intravenous bags in a veterinary emergency room (ER) and intensive care unit (ICU). DESIGN Experimental model. SETTING Ninety intravenous fluid bags of lactated balanced-electrolytes solution (1 L) hung in a university hospital. INTERVENTIONS Bags were hung in 2 different locations in the ER (sink and bins) and one location in the ICU (sink) for 11 days. Bags were punctured 3 times daily with a sterile needle to simulate clinical use. Injection ports were swabbed and 50 mL of fluid were collected in duplicates on days 0, 2, 4, 7, and 10. Aerobic bacterial cultures were performed on the fluid and injection port. Contamination was defined as bacterial growth of a similar phenotype across 2 consecutive times. Increase in the fluid contamination rate from day 0 was tested using an exact binomial test. Port contamination rate between locations was tested using Fisher's exact test. MAIN RESULTS Combined bacterial growth on injection ports reached a mean (95% confidence interval) of 8.1 (0.005-16.2) cfu/port on day 10. The combined port contamination was 3.3%, 11.1%, 17.8%, and 31.1% on days 0, 2, 4, and 7, respectively. Port contamination was similar between ER and ICU. However, port contamination was higher in the sink versus the bins area (38.3% vs 16.7%, P = 0.032). No fluid bag was contaminated at days 0 and 2. The contamination rate of fluid bag was 1.1% and 4.4% on days 4 and 7, respectively. All bags with contaminated fluid were in the ER (6.7%, 95% exact binomial confidence interval 1.9-16.2%). CONCLUSIONS Injection port contamination reached 31.1% on day 7. Contamination was more likely when the bags were hung next to a sink. In our model of bag puncture, fluid contamination occurred between days 2 and 4.
Collapse
Affiliation(s)
- Julien Guillaumin
- Department of Clinical Science, The Ohio State University, Columbus, OH
| | - Nichole M Olp
- Department of Clinical Science, The Ohio State University, Columbus, OH
| | | | | | - Joshua B Daniels
- Department of Clinical Science, The Ohio State University, Columbus, OH
| |
Collapse
|
21
|
Çoban EP, Fırıncı R, Biyik H, Günay ME. Unsymmetrically substituted imidazolium salts: synthesis, characterization and antimicrobial activity. BRAZ J PHARM SCI 2017. [DOI: 10.1590/s2175-97902017000115075] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
|
22
|
Hanafy RA, Couger MB, Baker K, Murphy C, O'Kane SD, Budd C, French DP, Hoff WD, Youssef N. Draft genome sequence of Micrococcus luteus strain O'Kane implicates metabolic versatility and the potential to degrade polyhydroxybutyrates. GENOMICS DATA 2016; 9:148-53. [PMID: 27583205 PMCID: PMC4993860 DOI: 10.1016/j.gdata.2016.08.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Accepted: 08/08/2016] [Indexed: 01/03/2023]
Abstract
Micrococcus luteus is a predominant member of skin microbiome. We here report on the genomic analysis of Micrococcus luteus strain O'Kane that was isolated from an elevator. The partial genome assembly of Micrococcus luteus strain O'Kane is 2.5 Mb with 2256 protein-coding genes and 62 RNA genes. Genomic analysis revealed metabolic versatility with genes involved in the metabolism and transport of glucose, galactose, fructose, mannose, alanine, aspartate, asparagine, glutamate, glutamine, glycine, serine, cysteine, methionine, arginine, proline, histidine, phenylalanine, and fatty acids. Genomic comparison to other M. luteus representatives identified the potential to degrade polyhydroxybutyrates, as well as several antibiotic resistance genes absent from other genomes.
Collapse
Affiliation(s)
- Radwa A Hanafy
- Department of Microbiology and Molecular Genetics, Oklahoma State University, Stillwater, OK, United States
| | - M B Couger
- Department of Microbiology and Molecular Genetics, Oklahoma State University, Stillwater, OK, United States
| | - Kristina Baker
- Department of Microbiology and Molecular Genetics, Oklahoma State University, Stillwater, OK, United States
| | - Chelsea Murphy
- Department of Microbiology and Molecular Genetics, Oklahoma State University, Stillwater, OK, United States
| | - Shannon D O'Kane
- Department of Microbiology and Molecular Genetics, Oklahoma State University, Stillwater, OK, United States
| | - Connie Budd
- Department of Microbiology and Molecular Genetics, Oklahoma State University, Stillwater, OK, United States
| | - Donald P French
- Department of Integrative Biology, Oklahoma State University, Stillwater, OK, United States
| | - Wouter D Hoff
- Department of Microbiology and Molecular Genetics, Oklahoma State University, Stillwater, OK, United States
| | - Noha Youssef
- Department of Microbiology and Molecular Genetics, Oklahoma State University, Stillwater, OK, United States
| |
Collapse
|
23
|
Setlhare G, Malebo N, Shale K, Lues R. Identification of airborne microbiota in selected areas in a health-care setting in South Africa. BMC Microbiol 2014; 14:100. [PMID: 24750818 PMCID: PMC4016773 DOI: 10.1186/1471-2180-14-100] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Accepted: 04/11/2014] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The role of bio-aerosols in the spread of disease and spoilage of food has been described in numerous studies; nevertheless this information at South African hospitals is limited. Attributable to their size, bio-aerosols may be suspended in the air for long periods placing patients at risk of infection and possibly settling on surfaces resulting in food contamination. The aim of the study is to assess the microbial composition of the air in the kitchen and selected wards at a typical district hospital in South Africa. Air samples were collected using the settle plates and an SAS Super 90 air sampler by impaction on agar. These microbial samples were quantified and identified using Matrix Assisted Laser Desorption/Ionization Time of Flight Mass Spectrometry (MALDI-TOF MS) and Analytic Profile Index (API). RESULTS Microbial counts were found to be higher in the fourth (≤6.0 × 101 cfu/m(-3)) sampling rounds when compared to the first (≥2 cfu/m(-3)), second (≤3.0 × 101 cfu/m(-3)) and third (≤1.5 × 101 cfu/m(-3)) sampling rounds. Genera identified included Bacillus, Kocuria, Staphylococcus, Arthrobacter, Candida, Aureobasidium, Penicillium and Phoma amongst others. The presence of these pathogens is of concern, attributable to their ability to cause diseases in humans especially in those with suppressed host immunity defenses. Furthermore, fungal genera identified (e.g. Candida) in this study are also known to cause food spoilage and fungal infections in patients. CONCLUSION Results from this study indicate the importance of air quality monitoring in health-care settings to prevent possible hospital-acquired infections and contamination of hospital surfaces including food contact surfaces by airborne contaminants.
Collapse
Affiliation(s)
| | - Ntsoaki Malebo
- Department of Life Sciences, Unit for Applied Food Science and -Biotechnology, Central University of Technology, Free State, Private Bag X 20539, Bloemfontein 9300, South Africa.
| | | | | |
Collapse
|
24
|
Lawrence MW, Blanks J, Ayala R, Talk D, Macian D, Glasser J, Schofer JM. Hospital-wide survey of bacterial contamination of point-of-care ultrasound probes and coupling gel. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2014; 33:457-462. [PMID: 24567457 DOI: 10.7863/ultra.33.3.457] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVES The purpose of this study was to determine the hospital-wide incidence of bacterial contamination of point-of-care (bedside) ultrasound probes and coupling gel at a single academic medical center to predict the risk of nosocomial spread of infection. METHODS Bacterial cultures were performed on all point-of-care ultrasound probe surfaces and associated gel bottles in our institution (82 total probes in 9 separate departments). This process was repeated every 2 weeks for a total of 8 weeks; therefore, each probe was cultured 4 times during the study period. RESULTS Of the 320 probe cultures, 18 (5.6%), resulted in positive growth, all of which identified nonpathogenic organisms common to human skin flora and the environment. No methicillin-resistant Staphylococcus aureus or other notable pathogens were identified. No gel cultures resulted in bacterial growth. CONCLUSIONS Bacterial contamination of point-of-care ultrasound probes and coupling gel is low at this single academic medical center and involves nonpathogenic organisms only.
Collapse
Affiliation(s)
- Matthew W Lawrence
- LCDR, MC, USN, Emergency Department, Naval Medical Center, 2927 Bruce Station, Chesapeake, VA 23321 USA.
| | | | | | | | | | | | | |
Collapse
|
25
|
Babahan I, Eyduran F, Coban EP, Orhan N, Kazar D, Biyik H. Spectroscopic and biological approach of Ni(II), Cu(II) and Co(II) complexes of 4-methoxy/ethoxybenzaldehyde thiosemicarbazone glyoxime. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 121:205-215. [PMID: 24239764 DOI: 10.1016/j.saa.2013.10.040] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Revised: 10/06/2013] [Accepted: 10/08/2013] [Indexed: 06/02/2023]
Abstract
Two novel vicinal dioxime ligands containing (4-methoxybenzaldehyde thiosemicarbazone glyoxime (L(1)H2) or 4-ethoxybenzaldehyde thiosemicarbazone glyoxime (L(2)H2)) thiosemicarbazone units were synthesized and characterized using (1)H NMR, (13)C NMR, HMQC, MS, infrared and, UV-VIS. spectroscopy, elemental analysis, and magnetic susceptibility measurements. Mononuclear nickel(II), copper(II) and cobalt(II) complexes with a metal:ligand ratio of 1:2 for L(1)H2 and L(2)H2 were also synthesized. The effect of pH and solvent on the absorption spectra of both ligands and complexes was determined. IR spectra show that the ligands act in a bidentate manner and coordinates N4 donor groups of the ligands to Ni(II), Cu(II) and Co(II) ions. The detection of H-bonding (O-H⋯O) in the [M(LH)2] metal complexes by IR spectra supported the square-planar MN4 coordination of mononuclear complexes. The antimicrobial activities of compounds L(1)H2, L(2)H2, and their Ni(II), Cu(II) and Co(II) complexes were evaluated using the disc diffusion method against 12 bacteria and 4 yeasts. The minimal inhibitory concentrations (MICs) against 7 bacteria and 3 yeasts were also determined. Among the test compounds attempted, L(1)H2, [Ni(L1H)2], [Cu(L1H)2], L2H2, [Ni(L2H)2] and [Cu(L2H)2] showed some activities against certain Gram-positive bacteria and some of the yeasts tested.
Collapse
Affiliation(s)
- Ilknur Babahan
- Adnan Menderes University, Faculty of Science and Art, Department of Chemistry, 09010 Aydin, Turkey.
| | - Fatih Eyduran
- Adnan Menderes University, Faculty of Science and Art, Department of Chemistry, 09010 Aydin, Turkey.
| | - Esin Poyrazoglu Coban
- Adnan Menderes University, Faculty of Science and Art, Department of Biology, 09010 Aydin, Turkey
| | - Nil Orhan
- Adnan Menderes University, Faculty of Science and Art, Department of Chemistry, 09010 Aydin, Turkey
| | - Didem Kazar
- Adnan Menderes University, Faculty of Science and Art, Department of Chemistry, 09010 Aydin, Turkey
| | - Halil Biyik
- Adnan Menderes University, Faculty of Science and Art, Department of Biology, 09010 Aydin, Turkey
| |
Collapse
|
26
|
Durdu M, Ilkit M. First step in the differential diagnosis of folliculitis: cytology. Crit Rev Microbiol 2012; 39:9-25. [DOI: 10.3109/1040841x.2012.682051] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
27
|
Worodria W, Anderson J, Cattamanchi A, Davis JL, den Boon S, Andama A, Yoo SD, Joloba M, Huang L, Kato-Maeda M. The role of speciation in positive Lowenstein-Jensen culture isolates from a high tuberculosis burden country. PLoS One 2011; 6:e27017. [PMID: 22073241 PMCID: PMC3208568 DOI: 10.1371/journal.pone.0027017] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2011] [Accepted: 10/07/2011] [Indexed: 12/02/2022] Open
Abstract
Objective To determine the need for routine speciation of positive Lowenstein-Jensen mycobacterial cultures in HIV-infected patients suspected of having pulmonary tuberculosis at Mulago Hospital in Kampala, Uganda. Methods Sputum and bronchoalveolar lavage Lowenstein-Jensen mycobacterial culture isolates from consecutive, HIV-infected patients admitted to Mulago Hospital with 2 weeks or more of cough were subjected to IS6110 PCR and rpoB genetic analysis to determine the presence of Mycobacterium tuberculosis complex (MTBC) and non-tuberculous mycobacteria (NTM). Results Eighty (100%) mycobacterial cultures from 65 patients were confirmed to be members of MTBC. Subsequent analysis of the cultures from 54 patients by PCR and sequence analyses to identify co-infection with NTM confirmed the presence of MTBC as well as the presence of Micrococcus luteus (n = 4), Janibacter spp. (n = 1) and six cultures had organisms that could not be identified. Conclusions Presumptive diagnosis of tuberculosis on the basis of a positive Lowenstein-Jensen culture is sufficient in HIV-infected Ugandans suspected of having tuberculosis. Routine molecular confirmation of positive Lowenstein-Jensen cultures is unnecessary in this low resource setting.
Collapse
Affiliation(s)
- William Worodria
- Department of Medicine, Makerere University College of Health Sciences, Kampala, Uganda
- Department of Medicine, Mulago National Referral and Teaching Hospital, Kampala, Uganda
- San Francisco Research Collaboration, Makerere University-University of California San Francisco, Kampala, Uganda
- * E-mail:
| | - Jillian Anderson
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of California San Francisco, San Francisco General Hospital, San Francisco, California, United States of America
| | - Adithya Cattamanchi
- San Francisco Research Collaboration, Makerere University-University of California San Francisco, Kampala, Uganda
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of California San Francisco, San Francisco General Hospital, San Francisco, California, United States of America
- Curry International Tuberculosis Center, Department of Medicine, University of California San Francisco, San Francisco General Hospital, San Francisco, California, United States of America
| | - J. Lucian Davis
- San Francisco Research Collaboration, Makerere University-University of California San Francisco, Kampala, Uganda
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of California San Francisco, San Francisco General Hospital, San Francisco, California, United States of America
- Curry International Tuberculosis Center, Department of Medicine, University of California San Francisco, San Francisco General Hospital, San Francisco, California, United States of America
| | - Saskia den Boon
- San Francisco Research Collaboration, Makerere University-University of California San Francisco, Kampala, Uganda
| | - Alfred Andama
- Department of Medicine, Makerere University College of Health Sciences, Kampala, Uganda
- Department of Medicine, Mulago National Referral and Teaching Hospital, Kampala, Uganda
- San Francisco Research Collaboration, Makerere University-University of California San Francisco, Kampala, Uganda
| | - Samuel D. Yoo
- Department of Medicine, Makerere University College of Health Sciences, Kampala, Uganda
- Department of Medicine, Mulago National Referral and Teaching Hospital, Kampala, Uganda
- San Francisco Research Collaboration, Makerere University-University of California San Francisco, Kampala, Uganda
| | - Moses Joloba
- Department of Microbiology, Makerere University School of Biomedical Sciences, Kampala, Uganda
| | - Laurence Huang
- San Francisco Research Collaboration, Makerere University-University of California San Francisco, Kampala, Uganda
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of California San Francisco, San Francisco General Hospital, San Francisco, California, United States of America
- Curry International Tuberculosis Center, Department of Medicine, University of California San Francisco, San Francisco General Hospital, San Francisco, California, United States of America
- HIV/AIDS Division, Department of Medicine, University of California San Francisco, San Francisco General Hospital, San Francisco, California, United States of America
| | - Midori Kato-Maeda
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of California San Francisco, San Francisco General Hospital, San Francisco, California, United States of America
- Curry International Tuberculosis Center, Department of Medicine, University of California San Francisco, San Francisco General Hospital, San Francisco, California, United States of America
| |
Collapse
|
28
|
Schöfer H, Bruns R, Effendy I, Hartmann M, Jappe U, Plettenberg A, Reimann H, Seifert H, Shah P, Sunderkötter C, Weberschock T, Wichelhaus TA, Nast A. Diagnosis and treatment of Staphylococcus aureus infections of the skin and mucous membranes. J Dtsch Dermatol Ges 2011; 9:953-67. [DOI: 10.1111/j.1610-0387.2011.07786.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
29
|
Wencewicz TA, Yang B, Rudloff JR, Oliver AG, Miller MJ. N-O chemistry for antibiotics: discovery of N-alkyl-N-(pyridin-2-yl)hydroxylamine scaffolds as selective antibacterial agents using nitroso Diels-Alder and ene chemistry. J Med Chem 2011; 54:6843-58. [PMID: 21859126 PMCID: PMC3188665 DOI: 10.1021/jm200794r] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The discovery, syntheses, and structure-activity relationships (SAR) of a new family of heterocyclic antibacterial compounds based on N-alkyl-N-(pyridin-2-yl)hydroxylamine scaffolds are described. A structurally diverse library of ∼100 heterocyclic molecules generated from Lewis acid-mediated nucleophilic ring-opening reactions with nitroso Diels-Alder cycloadducts and nitroso ene reactions with substituted alkenes was evaluated in whole cell antibacterial assays. Compounds containing the N-alkyl-N-(pyridin-2-yl)hydroxylamine structure demonstrated selective and potent antibacterial activity against the Gram-positive bacterium Micrococcus luteus ATCC 10240 (MIC(90) = 2.0 μM or 0.41 μg/mL) and moderate activity against other Gram-positive strains including antibiotic resistant strains of Staphylococcus aureus (MRSA) and Enterococcus faecalis (VRE). A new synthetic route to the active core was developed using palladium-catalyzed Buchwald-Hartwig amination reactions of N-alkyl-O-(4-methoxybenzyl)hydroxylamines with 2-halo-pyridines that facilitated SAR studies and revealed the simplest active structural fragment. This work shows the value of using a combination of diversity-oriented synthesis (DOS) and parallel synthesis for identifying new antibacterial scaffolds.
Collapse
Affiliation(s)
- Timothy A. Wencewicz
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Hall, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Baiyuan Yang
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Hall, University of Notre Dame, Notre Dame, IN 46556, USA
| | - James R. Rudloff
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Hall, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Allen G. Oliver
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Hall, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Marvin J. Miller
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Hall, University of Notre Dame, Notre Dame, IN 46556, USA
| |
Collapse
|
30
|
Pitucha M, Mazur L, Kosikowska U, Pachuta-Stec A, Malm A, Popiołek Ł, Rza̧czyńska Z. Synthesis, structure, and antibacterial evaluation of new N-substituted-3-amino- 5-oxo-4-phenyl-2,5-dihydro-1 H-pyrazole-1-carbothioamides. HETEROATOM CHEMISTRY 2010. [DOI: 10.1002/hc.20598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
31
|
Wujec M, Kosikowska U, Paneth P, Malm A. Reaction of Hydrazide of (Tetrazol-5-yl)acetic Acid with Isothiocyanates and Antimicrobial Investigations of Newly-Obtained Compounds. HETEROCYCLES 2007. [DOI: 10.3987/com-07-11129] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
32
|
Becker K, Wüllenweber J, Odenthal HJ, Moeller M, Schumann P, Peters G, von Eiff C. Prosthetic valve endocarditis due to Kytococcus schroeteri. Emerg Infect Dis 2004; 9:1493-5. [PMID: 14725260 PMCID: PMC3035532 DOI: 10.3201/eid0911.020683] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
| | | | | | | | - Peter Schumann
- German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Georg Peters
- University Hospital of Münster, Münster, Germany
| | | |
Collapse
|
33
|
Almagro Sánchez M, García Silva J, Fonseca Capdevila E. Manifestaciones cutáneas actuales de la infección por el VIH. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s0213-9251(02)72538-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|