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Villarreal-Salazar V, Mendoza-Olazarán S, Flores-Treviño S, Garza-González E, Bocanegra-Ibarias P, Morfín-Otero R, Camacho-Ortiz A, Rodríguez-Noriega E, Villarreal-Treviño L. Rapid methicillin resistance detection and subspecies discrimination in Staphylococcus hominis clinical isolates by MALDI-TOF MS. Indian J Med Microbiol 2023; 41:83-89. [PMID: 36123270 DOI: 10.1016/j.ijmmb.2022.08.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 06/06/2022] [Accepted: 08/14/2022] [Indexed: 11/05/2022]
Abstract
PURPOSE Staphylococcus hominis is a coagulase-negative opportunistic pathogen responsible for implanted medical device infections. Rapid identification and virulence factors detection are crucial for appropriate antimicrobial therapy. We aimed to search protein biomarker peaks for rapid classification of antibiotic resistance and subspecies of S. hominis using MALDI-TOF MS. METHODS S. hominis clinical isolates (n = 148) were screened for subspecies differentiation by novobiocin resistance. Biofilm composition and formation were determined by detachment assay and crystal violet staining, respectively. Antibiotic susceptibility was performed by the broth microdilution method. The search for potential biomarkers peaks was enabled by ClinProTools 3.0, flexAnalysis 3.4, and Biotools 3.2 for statistical analysis, peak visualization, and protein/peptide alignment, respectively. RESULTS Of 148 isolates, 12.16% were classified as S. hominis subsp. novobiosepticus, 77.77% were biofilm producers, and ˃ 50% were multidrug-resistant. Two potential biomarker peaks, 8975 m/z and 9035 m/z were detected for the discrimination of methicillin resistance with a sensitivity of 96.72%. The following peaks were detected for subspecies differentiation: 2582 m/z, 2823 m/z, and 2619 m/z with 88.89-98.28% of sensitivity. CONCLUSIONS We found potential biomarker peaks to predict methicillin resistance and discriminate S. hominis subspecies during routine MALDI-TOF MS identification in a clinical setting to enable better antibiotic treatment.
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Affiliation(s)
- Verónica Villarreal-Salazar
- Laboratorio de Microbiología General, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, Av. Pedro de Alba S/N, Col. Ciudad Universitaria, 66450, San Nicolás de los Garza, Nuevo León, México
| | - Soraya Mendoza-Olazarán
- Servicio de Gastroenterología, Hospital Universitario "Dr. José E. González" y Facultad de Medicina, Universidad Autónoma de Nuevo León, Av. Francisco I, Madero Pte. S/N Monterrey y Av. Gonzalitos, Col. Mitras Centro, 64460, Monterrey, Nuevo León, México
| | - Samantha Flores-Treviño
- Servicio de Infectología, Hospital Universitario "Dr. José E. González", Universidad Autónoma de Nuevo León, Av. Francisco I, Madero Pte. S/N Monterrey y Av. Gonzalitos, Col. Mitras Centro, 64460, Monterrey, Nuevo León, México
| | - Elvira Garza-González
- Servicio de Infectología, Hospital Universitario "Dr. José E. González", Universidad Autónoma de Nuevo León, Av. Francisco I, Madero Pte. S/N Monterrey y Av. Gonzalitos, Col. Mitras Centro, 64460, Monterrey, Nuevo León, México
| | - Paola Bocanegra-Ibarias
- Servicio de Infectología, Hospital Universitario "Dr. José E. González", Universidad Autónoma de Nuevo León, Av. Francisco I, Madero Pte. S/N Monterrey y Av. Gonzalitos, Col. Mitras Centro, 64460, Monterrey, Nuevo León, México
| | - Rayo Morfín-Otero
- Hospital Civil de Guadalajara "Fray Antonio Alcalde" y el Instituto de Patólogía Infecciosa y Experimental, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Jalisco, México
| | - Adrián Camacho-Ortiz
- Servicio de Infectología, Hospital Universitario "Dr. José E. González", Universidad Autónoma de Nuevo León, Av. Francisco I, Madero Pte. S/N Monterrey y Av. Gonzalitos, Col. Mitras Centro, 64460, Monterrey, Nuevo León, México
| | - Eduardo Rodríguez-Noriega
- Hospital Civil de Guadalajara "Fray Antonio Alcalde" y el Instituto de Patólogía Infecciosa y Experimental, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Jalisco, México
| | - Licet Villarreal-Treviño
- Laboratorio de Microbiología General, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, Av. Pedro de Alba S/N, Col. Ciudad Universitaria, 66450, San Nicolás de los Garza, Nuevo León, México.
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Alzaben F, Fat’hi S, Elbehiry A, Alsugair M, Marzouk E, Abalkhail A, Almuzaini AM, Rawway M, Ibrahem M, Sindi W, Alshehri T, Hamada M. Laboratory Diagnostic Methods and Antibiotic Resistance Patterns of Staphylococcus aureus and Escherichia coli Strains: An Evolving Human Health Challenge. Diagnostics (Basel) 2022; 12:2645. [PMID: 36359489 PMCID: PMC9689540 DOI: 10.3390/diagnostics12112645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 10/19/2022] [Accepted: 10/28/2022] [Indexed: 09/10/2023] Open
Abstract
Raw ground meat is known as a transmission vehicle for biological agents that may be harmful to human health. The objective of the present study was to assess microbiological quality of the ground meats. A total of 280 samples of local and imported chilled meats were randomly collected from retail shops in Buraydah City, Saudi Arabia. The meat samples were microbiologically analyzed using standard methods, peptide mass fingerprinting (PMF) technique, MicroScan Walkaway System (MicroScan) and qPCR System. The imported meat was more bacterially contaminated than local meat, with variable contamination degrees of Staphylococcus aureus (40.33%), Escherichia coli (36.13%), Hafnia alvei (7.56%), Pseudomonas spp. (6.72%), Salmonella spp. (5.88%) and Aeromonas spp. (3.36%). PMF verified all the isolated bacteria by 100%, compared to 75-95% achieved by MicroScan. The gene encoding flagellin (fliC) was recognized in 67.44% of E. coli strains, while the thermonuclease (nuc) and methicillin resistance (mecA) genes were detected in 100% S. aureus and 39.6% of methicillin-resistant S. aureus (MRSA) strains, respectively. The S. aureus and E. coli strains were highly resistant to multiple antibiotics (e.g., ampicillin, amoxicillin-clavulanic acid and cephalothin). For identifying various foodborne pathogens, PMF has been recognized as a powerful and precise analytical method. In light of the increasing use of PMF to detect multidrug-resistant bacteria, this study emphasizes the need for improved ways of treating and preventing pathogens, as well as setting up monitoring systems to guarantee hygiene and safety in meat production.
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Affiliation(s)
- Feras Alzaben
- Department of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 52571, Saudi Arabia
- Department of Preventive Medicine, King Fahad Armed Forces Hospital, Jeddah 23311, Saudi Arabia
| | - Shawkat Fat’hi
- Department of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 52571, Saudi Arabia
- Department of Food Hygiene, Faculty of Veterinary Medicine, Assiut University, Assiut 71515, Egypt
| | - Ayman Elbehiry
- Department of Public Health, College of Public Health and Health Informatics, Qassim University, Al Bukayriyah 52741, Saudi Arabia
- Department of Bacteriology, Mycology and Immunology, Faculty of Veterinary Medicine, University of Sadat City, Sadat City 32511, Egypt
| | - Maha Alsugair
- Department of Preventive Medicine, King Fahad Armed Forces Hospital, Jeddah 23311, Saudi Arabia
| | - Eman Marzouk
- Department of Public Health, College of Public Health and Health Informatics, Qassim University, Al Bukayriyah 52741, Saudi Arabia
| | - Adil Abalkhail
- Department of Public Health, College of Public Health and Health Informatics, Qassim University, Al Bukayriyah 52741, Saudi Arabia
| | - Abdulaziz M. Almuzaini
- Department of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 52571, Saudi Arabia
| | - Mohammed Rawway
- Biology Department, College of Science, Jouf University, Sakaka 42421, Saudi Arabia
- Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Assiut 71524, Egypt
| | - Mai Ibrahem
- Department of Public Health, College of Applied Medical Science, King Khalid University, Abha 61421, Saudi Arabia
- Department of Aquatic Animal Medicine and Management, Faculty of Veterinary Medicine, Cairo University, Cairo 12211, Egypt
| | - Wael Sindi
- Department of Preventive Medicine, King Fahad Armed Forces Hospital, Jeddah 23311, Saudi Arabia
| | - Turki Alshehri
- Dental Department, Alhada Armed Forces Hospital, Taif City 26792, Saudi Arabia
| | - Mohamed Hamada
- Department of Food Hygiene & Control, Faculty of Veterinary Medicine, Sadat City University, Sadat City 32511, Egypt
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Oesterle ME, Conner T, Bunch M, Fleming A, Johnson P, Bialonska D. Do Kinesio Tapes Increase the Skin Exposure to Pathogenic Bacteria? Am J Infect Control 2022; 51:401-405. [PMID: 35870663 DOI: 10.1016/j.ajic.2022.06.027] [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: 02/08/2022] [Revised: 06/30/2022] [Accepted: 06/30/2022] [Indexed: 11/15/2022]
Abstract
BACKGROUND Kinesio tapes (KTs) are tapes used in physical therapy and athletics. We sought to evaluate if wearing KTs for extended periods of time increases exposure to antibiotic resistant opportunistic pathogens and effects normal human skin bacteria. METHODS The study consisted of ten volunteers wearing nine KTs on their arms for five consecutive days. Microorganisms were isolated from fragments collected on the second and fifth day then analyzed. Bacteria were identified using the BIOLOG system. Resistance to selected antibiotics was performed using E-Test. The effect of KTs on the growth of Staphylococcus aureus, Staphylococcus epidermidis, and Micrococcus luteus was evaluated in a diffusion-based assay. RESULTS We found that KTs accumulated environmental bacteria. Among 22 species 8 were opportunistic pathogens, and all of them exhibited resistance to at least one antibiotic. None of the tapes produced inhibition zones in S. aureus. One tape, Leukotape P, caused growth inhibition in non-pathogenic S. epidermidis and M. luteus. The adhesive material of the tapes inhibited the growth of all bacteria. CONCLUSIONS These results indicate that KTs may increase the exposure to antibiotic resistant pathogens which can accumulate from the environment. Further, extended exposure could lead to changes in normal skin microbiota, potentially contributing to increased risks of skin infections.
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Affiliation(s)
| | - Teresa Conner
- Division of Health Sciences, Idaho State University, Pocatello, ID, USA
| | - Madison Bunch
- Department of Biology, University of North Georgia, Dahlonega, GA, USA
| | - Andi Fleming
- Department of Biology, University of North Georgia, Dahlonega, GA, USA
| | - Paul Johnson
- Department of Biology, University of North Georgia, 332 Sunset Drive, Dahlonega GA, USA
| | - Dobrusia Bialonska
- Division of Health Sciences, Idaho State University, Pocatello, ID, USA.
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Jiang X, Wan Y, Yuan H, Zhao L, Sun M, Xu Y, Xin X, Dong J, Hu D, Chen D, Li X. Incidence, Prophylaxis and Prognosis of Acute Postoperative Endophthalmitis After Cataract Surgery: A Multicenter Retrospective Analysis in Northern China from 2013 to 2019. Infect Drug Resist 2022; 15:4047-4058. [PMID: 35924017 PMCID: PMC9342430 DOI: 10.2147/idr.s332997] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 07/20/2022] [Indexed: 11/25/2022] Open
Abstract
Objective To investigate the incidence of acute postoperative endophthalmitis (POE) after cataract surgery in Northern China from 2013 to 2019, evaluate the efficacy of prophylaxis and analyze the predictors of visual prognosis among POE patients. Methods The study was conducted as a retrospective multi-center research, with seven hospitals in Northern China enrolled. The diagnosis of acute-onset POE was made on the basis of clinical manifestations within six weeks after initial surgery. By reviewing electronic medical system, the number of cataract surgeries and acute POE cases were recorded to estimate the overall incidence and incidences by different years and hospitals. Perioperative measures for preventing infection in different hospitals were collected. The correlations between unfavorable final vision and potential factors including basic information and clinical characteristics were examined to determine the predictive factors for final visual prognosis. Results Of 72,255 cataract surgeries performed during seven years in the seven hospitals, 19 cases developed acute POE, yielding an overall incidence of 0.026%. The average incidence of acute POE among seven hospitals significantly declined annually during the past 7 years (p = 0.021). In Hospital-D, the incidence of acute POE significantly decreased after the application of 0.5% povidone-iodine (PVP-I) for conjunctival washing (p = 0.003). Two hospitals adopting tobramycin in the irrigation solution achieved a significant lower incidence of POE than the other hospitals (p = 0.044). The positive rate of pathogen culture was just 17.6% (3/19). Patients with presenting BCVA of CF or better were more likely to present with unfavorable final vision than those with worse presenting BCVA (p = 0.003). Conclusion The overall incidence of acute POE after cataract surgery from 2013 to 2019 in Northern China was 0.026%, and the incidence declined annually over the period. Presenting BCVA could be a significant prognosis factor for predicting the final visual outcomes of acute POE patients.
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Affiliation(s)
- Xiaodan Jiang
- Department of Ophthalmology, Peking University Third Hospital, Beijing, People’s Republic of China
- Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Peking University Third Hospital, Beijing, People’s Republic of China
| | - Yu Wan
- Department of Ophthalmology, Peking University Third Hospital, Beijing, People’s Republic of China
- Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Peking University Third Hospital, Beijing, People’s Republic of China
| | - Hao Yuan
- Department of Ophthalmology, Peking University Third Hospital, Beijing, People’s Republic of China
- Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Peking University Third Hospital, Beijing, People’s Republic of China
| | - Liming Zhao
- Department of Ophthalmology, Beijing Fengtai Hospital, Beijing, People’s Republic of China
| | - Min Sun
- Department of Ophthalmology, Huabei Petroleum General Hospital, Renqiu, Hebei, People’s Republic of China
| | - Yanhui Xu
- Department of Ophthalmology; Hebei Provincial Eye Hospital, Xingtai, Hebei, People’s Republic of China
| | - Xiangyang Xin
- Department of Ophthalmology, Inner Mongolia Baogang Hospital, Baotou, Inner Mongolia, People’s Republic of China
| | - Jing Dong
- Department of Ophthalmology, the First Affiliated Hospital of Baotou Medical College, Baotou, Inner Mongolia, People’s Republic of China
| | - Die Hu
- Department of Ophthalmology, Baoding Zhuozhou GEM Flower Hospital, Zhuozhou, Hebei, People’s Republic of China
| | - Dongmei Chen
- Department of Ophthalmology, Baoding GEM Flower Eastern Hospital, Zhuozhou, Hebei, People’s Republic of China
| | - Xuemin Li
- Department of Ophthalmology, Peking University Third Hospital, Beijing, People’s Republic of China
- Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Peking University Third Hospital, Beijing, People’s Republic of China
- Correspondence: Xuemin Li, Department of Ophthalmology, Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Peking University Third Hospital, No. 49 Huayuan North Road, Haidian District, Beijing, 100191, People’s Republic of China, Tel +86 10 8226 6312, Fax +86 10 8208 9951, Email
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Zhao ZH, Fan YC, Wang K. Pyogenic Liver Abscess Caused by Staphylococcus hominis: A Case Report. INFECTIOUS MICROBES AND DISEASES 2021; 4:79-81. [DOI: 10.1097/im9.0000000000000078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
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Zheng G, Li S, Zhao M, Yang X, Zhang Y, Deng J, Luo Y, Lv H, Zhang G. Time to positive culture can differentiate post-neurosurgical coagulase-negative Staphylococci other than S epidermidis meningitis from contamination: A case-control observational study. J Clin Lab Anal 2020; 34:e23447. [PMID: 32638442 PMCID: PMC7595912 DOI: 10.1002/jcla.23447] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 05/09/2020] [Accepted: 05/26/2020] [Indexed: 12/22/2022] Open
Abstract
Objective To explore the characteristics of coagulase‐negative Staphylococci other than Staphylococci epidermidis (Nse‐CoNS) meningitis and to apply cerebrospinal fluid (CSF) times to positivity culture (TTPC) for the precise differentiation of meningitis from contamination. Methods We conducted a case‐control study to accomplish the following: First, we retrospectively reviewed records of post‐neurosurgical patients’ CSF that yielded Nse‐CoNS from January to October 2019 at the Beijing Tiantan Hospital; 17 clinical and 12 laboratory characteristics were reviewed. Second, we investigated the TTPC of the Nse‐CoNS, the cutoffs, and corresponding parameters to differentiate Nse‐CoNS meningitis from contamination. Results In this study, a total of 146 patients with Nse‐CoNS CSF culture positive were enrolled. The average TTPC in the Nse‐CoNS meningitis group was significantly shorter than in the contamination group (20.2 ± 5.0 hours and 30.2 ± 12.6 hours, respectively, P < .05). The area under curve (AUC) of the model was 0.802. A TTPC of 20.0 hours had 94.3% sensitivity and a negative value of 90.2% for predicting Nse‐CoNS meningitis. Conclusions Nse‐CoNS meningitis often causes confusion in clinical diagnosis. In this study, we evaluated the clinical predictive factors of Nse‐CoNS meningitis and confirmed that the median TTPC in the Nse‐CoNS meningitis group was significantly shorter than in the contamination group. A TTPC shorter than 20.0 hours was associated with Nse‐CoNS meningitis, while a TTPC longer than 20.0 hours was associated with Nse‐CoNS contamination. This information will be helpful for the rapid diagnosis of Nse‐CoNS meningitis.
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Affiliation(s)
- Guanghui Zheng
- Department of Clinical Diagnosis, Laboratory of Beijing Tiantan Hospital and Capital Medical University, Beijing, China
| | - Siwen Li
- Department of Clinical Diagnosis, Laboratory of Beijing Tiantan Hospital and Capital Medical University, Beijing, China
| | - Minghui Zhao
- Department of Clinical Laboratory Diagnostics, Capital Medical University, Beijing, China
| | - Xinrui Yang
- Department of Clinical Laboratory Diagnostics, Capital Medical University, Beijing, China
| | - Yumeng Zhang
- Department of Clinical Laboratory Diagnostics, Capital Medical University, Beijing, China
| | - Jia Deng
- Department of Clinical Laboratory Diagnostics, Capital Medical University, Beijing, China
| | - Yu Luo
- Department of Clinical Laboratory Diagnostics, Capital Medical University, Beijing, China
| | - Hong Lv
- Department of Clinical Diagnosis, Laboratory of Beijing Tiantan Hospital and Capital Medical University, Beijing, China
| | - Guojun Zhang
- Department of Clinical Diagnosis, Laboratory of Beijing Tiantan Hospital and Capital Medical University, Beijing, China
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