1
|
Sahin O, Pang J, Pavlovic N, Tang Y, Adiguzel MC, Wang C, Zhang Q. A Longitudinal Study on Campylobacter in Conventionally Reared Commercial Broiler Flocks in the United States: Prevalence and Genetic Diversity. Avian Dis 2024; 67:317-325. [PMID: 38300653 DOI: 10.1637/aviandiseases-d-23-00004] [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: 01/12/2023] [Accepted: 09/18/2023] [Indexed: 02/02/2024]
Abstract
Poultry meat contaminated with Campylobacter, a major bacterial cause of foodborne gastroenteritis worldwide, is considered the primary source of human campylobacteriosis. Thus, reduction or elimination of Campylobacter in poultry production will have a significant impact on food safety and public health. Despite the significant progress made over the last decades, many puzzles remain about the epidemiology of Campylobacter on poultry farms, hampering the development of an effective control strategy. This longitudinal study was conducted to determine the prevalence and genetic diversity of Campylobacter in a U.S. commercial broiler production farm system. Cecal contents (15 samples/flock) and boot swabs (3 samples/flock) were collected from approximately 6-wk-old birds from 406 conventional broiler flocks reared in 53 houses on 15 farms (located within a relatively close geographic proximity and managed by the same poultry integrator) for up to eight consecutive production cycles and cultured for Campylobacter. Pulsed-field gel electrophoresis was used to investigate the genetic diversity of the Campylobacter jejuni isolates recovered from the cecal contents. The prevalence of Campylobacter at the farm, house, and flock levels were found to be 93% (14/15), 79% (42/53), and 47% (192/406), respectively. Campylobacter prevalence varied remarkably among different farms and flocks, with some farms or houses testing consistently negative while others being positive all the time over the entire study period. Campylobacter isolation rate changed significantly by sample type (higher by cecal contents vs. boot swabs) and season/production cycle (higher in spring vs. other seasons). The majority (88%; 2364/2675) of the isolates were identified as C. jejuni, and almost all the rest (11%; 303/2675) were Campylobacter coli. Genotyping showed limited diversity within a flock and suggested persistence of some C. jejuni clones over multiple production cycles on the same farm. In conclusion, this study indicated that although Campylobacter prevalence was overall high, there were marked differences in the prevalence among the broiler flocks or farms tested. Future studies aimed at identification of potential risk factors associated with differential Campylobacter status are warranted in order to develop effective on-farm interventions.
Collapse
Affiliation(s)
- Orhan Sahin
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011,
| | - Jinji Pang
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011
- Department of Statistics, Iowa State University, Ames, IA 50011
| | - Nada Pavlovic
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011
| | - Yizhi Tang
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011
| | - Mehmet Cemal Adiguzel
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011
| | - Chong Wang
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011
- Department of Statistics, Iowa State University, Ames, IA 50011
| | - Qijing Zhang
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011
| |
Collapse
|
2
|
Yildiz M, Sahin O, Adiguzel MC. Prevalence and antimicrobial resistance of Campylobacter species in shelter-housed healthy and diarrheic cats and dogs in Turkey. Vet Med Sci 2024; 10:e1327. [PMID: 37990962 PMCID: PMC10766042 DOI: 10.1002/vms3.1327] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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] [Received: 05/24/2023] [Revised: 09/13/2023] [Accepted: 11/07/2023] [Indexed: 11/23/2023] Open
Abstract
BACKGROUND Campylobacter spp. are among the leading foodborne bacterial pathogens. Pet animals may be an important reservoir for human infection. OBJECTIVES To determine the prevalence and antimicrobial resistance profiles and mechanisms of Campylobacter isolates recovered from shelter-housed healthy and diarrheic cats and dogs in Erzurum province in Turkey. METHODS A total of 250 rectal swabs (from 124 cats and 126 dogs) collected between 2020 and 2021 were included in this study. The samples were cultured using a Campylobacter-selective agar medium. A single suspect colony from each plate was purified and species identification was performed by PCR. Minimum inhibitory concentration (MIC) values were determined against eight antibiotics. Specific antimicrobial resistance genes (tetO and aphA-3) and mutations (in gyrA) were screened by PCR and/or sequencing. RESULTS A total of 26 (10.4%) isolates (25 Campylobacter jejuni and 1 Campylobacter coli) were obtained from the dogs; no Campylobacter was isolated from the cats. Of the C. jejuni isolates, 19.2% were resistant to nalidixic acid, 7.7% to ciprofloxacin and 3.8% to tetracycline and gentamicin per the CLSI interpretative criteria. The C. coli isolate was susceptible to all of the tested antibiotics. Thr-86-Ile mutation was the most common change detected in the gyrA gene in the quinolone-resistant isolates. CONCLUSION While geographic and population differences exist, Campylobacter carriage and associated antibiotic resistance in dogs is common, emphasising the need for continuous surveillance in this species, particularly given its zoonotic potential.
Collapse
Affiliation(s)
- Mustafa Yildiz
- Faculty of Veterinary MedicineDepartment of MicrobiologyAtaturk UniversityErzurumTurkey
| | - Orhan Sahin
- Department of Veterinary Diagnostic and Production Animal MedicineCollege of Veterinary MedicineIowa State UniversityAmesIowaUSA
| | - Mehmet Cemal Adiguzel
- Faculty of Veterinary MedicineDepartment of MicrobiologyAtaturk UniversityErzurumTurkey
- Veterinary Vaccine and Biological Product Development Application and Research CenterAtaturk UniversityErzurumTurkey
| |
Collapse
|
3
|
Hakimi M, Ye F, Stinman CC, Sahin O, Burrough ER. Antimicrobial susceptibility of U.S. porcine Brachyspira isolates and genetic diversity of B. hyodysenteriae by multilocus sequence typing. J Vet Diagn Invest 2024; 36:62-69. [PMID: 37968893 PMCID: PMC10734594 DOI: 10.1177/10406387231212189] [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] [Indexed: 11/17/2023] Open
Abstract
Swine dysentery, caused by Brachyspira hyodysenteriae and the newly recognized Brachyspira hampsonii in grower-finisher pigs, is a substantial economic burden in many swine-rearing countries. Antimicrobial therapy is the only commercially available measure to control and prevent Brachyspira-related colitis. However, data on antimicrobial susceptibility trends and genetic diversity of Brachyspira species from North America is limited. We evaluated the antimicrobial susceptibility profiles of U.S. Brachyspira isolates recovered between 2013 and 2022 to tiamulin, tylvalosin, lincomycin, doxycycline, bacitracin, and tylosin. In addition, we performed multilocus sequence typing (MLST) on 64 B. hyodysenteriae isolates. Overall, no distinct alterations in the susceptibility patterns over time were observed among Brachyspira species. However, resistance to the commonly used antimicrobials was seen sporadically with a higher resistance frequency to tylosin compared to other tested drugs. B. hampsonii was more susceptible to the tested drugs than B. hyodysenteriae and B. pilosicoli. MLST revealed 16 different sequence types (STs) among the 64 B. hyodysenteriae isolates tested, of which 5 STs were previously known, whereas 11 were novel. Most isolates belonged to the known STs: ST93 (n = 32) and ST107 (n = 13). Our findings indicate an overall low prevalence of resistance to clinically important antimicrobials other than tylosin and bacitracin, and high genetic diversity among the clinical Brachyspira isolates from pigs in the United States during the past decade. Further molecular, epidemiologic, and surveillance studies are needed to better understand the infection dynamics of Brachyspira on swine farms and to help develop effective control measures.
Collapse
Affiliation(s)
- Maria Hakimi
- Departments of Veterinary Microbiology and Preventive Medicine, Iowa State University, Ames, IA, USA
| | - Fangshu Ye
- Statistics, Iowa State University, Ames, IA, USA
| | - Chloe C. Stinman
- Veterinary Diagnostic Laboratory, Iowa State University, Ames, IA, USA
| | - Orhan Sahin
- Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA, USA
| | - Eric R. Burrough
- Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA, USA
| |
Collapse
|
4
|
Silva APSP, Almeida M, Michael A, Rahe MC, Siepker C, Magstadt DR, Piñeyro P, Arruda BL, Macedo NR, Sahin O, Gauger PC, Krueger KM, Mugabi R, Streauslin JS, Trevisan G, Linhares DCL, Silva GS, Fano E, Main RG, Schwartz KJ, Burrough ER, Derscheid RJ, Sitthicharoenchai P, Clavijo MJ. Detection and disease diagnosis trends (2017-2022) for Streptococcus suis, Glaesserella parasuis, Mycoplasma hyorhinis, Actinobacillus suis and Mycoplasma hyosynoviae at Iowa State University Veterinary Diagnostic Laboratory. BMC Vet Res 2023; 19:268. [PMID: 38087358 PMCID: PMC10714645 DOI: 10.1186/s12917-023-03807-w] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 11/07/2023] [Indexed: 12/18/2023] Open
Abstract
BACKGROUND Accurate measurement of disease associated with endemic bacterial agents in pig populations is challenging due to their commensal ecology, the lack of disease-specific antemortem diagnostic tests, and the polymicrobial nature of swine diagnostic cases. The main objective of this retrospective study was to estimate temporal patterns of agent detection and disease diagnosis for five endemic bacteria that can cause systemic disease in porcine tissue specimens submitted to the Iowa State University Veterinary Diagnostic Laboratory (ISU VDL) from 2017 to 2022. The study also explored the diagnostic value of specific tissue specimens for disease diagnosis, estimated the frequency of polymicrobial diagnosis, and evaluated the association between phase of pig production and disease diagnosis. RESULTS S. suis and G. parasuis bronchopneumonia increased on average 6 and 4.3%, while S. suis endocarditis increased by 23% per year, respectively. M. hyorhinis and A. suis associated serositis increased yearly by 4.2 and 12.8%, respectively. A significant upward trend in M. hyorhinis arthritis cases was also observed. In contrast, M. hyosynoviae arthritis cases decreased by 33% average/year. Investigation into the diagnostic value of tissues showed that lungs were the most frequently submitted sample, However, the use of lung for systemic disease diagnosis requires caution due to the commensal nature of these agents in the respiratory system, compared to systemic sites that diagnosticians typically target. This study also explored associations between phase of production and specific diseases caused by each agent, showcasing the role of S. suis arthritis in suckling pigs, meningitis in early nursery and endocarditis in growing pigs, and the role of G. parasuis, A. suis, M. hyorhinis and M. hyosynoviae disease mainly in post-weaning phases. Finally, this study highlighted the high frequency of co-detection and -disease diagnosis with other infectious etiologies, such as PRRSV and IAV, demonstrating that to minimize the health impact of these endemic bacterial agents it is imperative to establish effective viral control programs. CONCLUSIONS Results from this retrospective study demonstrated significant increases in disease diagnosis for S. suis, G. parasuis, M. hyorhinis, and A. suis, and a significant decrease in detection and disease diagnosis of M. hyosynoviae. High frequencies of interactions between these endemic agents and with viral pathogens was also demonstrated. Consequently, improved control programs are needed to mitigate the adverse effect of these endemic bacterial agents on swine health and wellbeing. This includes improving diagnostic procedures, developing more effective vaccine products, fine-tuning antimicrobial approaches, and managing viral co-infections.
Collapse
Affiliation(s)
- Ana Paula Serafini Poeta Silva
- Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Marcelo Almeida
- Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Alyona Michael
- Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Michael C Rahe
- Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Christopher Siepker
- Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Drew R Magstadt
- Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Pablo Piñeyro
- Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Bailey L Arruda
- Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
- United States Department of Agriculture (USDA), Ames, IA, USA
| | - Nubia R Macedo
- Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Orhan Sahin
- Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Philip C Gauger
- Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Karen M Krueger
- Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Robert Mugabi
- Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Jessica S Streauslin
- Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Giovani Trevisan
- Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Daniel C L Linhares
- Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Gustavo S Silva
- Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Eduardo Fano
- Boehringer Ingelheim Animal Health USA Inc, Atlanta, GA, USA
| | - Rodger G Main
- Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Kent J Schwartz
- Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Eric R Burrough
- Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Rachel J Derscheid
- Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Panchan Sitthicharoenchai
- Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Maria J Clavijo
- Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA.
| |
Collapse
|
5
|
Rensner JJ, Lueth P, Bellaire BH, Sahin O, Lee YJ. Rapid detection of antimicrobial resistance in methicillin-resistant Staphylococcus aureus using MALDI-TOF mass spectrometry. Front Cell Infect Microbiol 2023; 13:1281155. [PMID: 38076465 PMCID: PMC10702551 DOI: 10.3389/fcimb.2023.1281155] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 10/23/2023] [Indexed: 12/18/2023] Open
Abstract
Antimicrobial resistance is a growing problem in modern healthcare. Most antimicrobial susceptibility tests (AST) require long culture times which delay diagnosis and effective treatment. Our group has previously reported a proof-of-concept demonstration of a rapid AST in Escherichia coli using deuterium labeling and MALDI mass spectrometry. Culturing bacteria in D2O containing media incorporates deuterium in newly synthesized lipids, resulting in a mass shift that can be easily detected by mass spectrometry. The extent of new growth is measured by the average mass of synthesized lipids that can be correlated with resistance in the presence of antimicrobials. In this work, we adapt this procedure to methicillin-resistant Staphylococcus aureus using the Bruker MALDI-TOF Biotyper, a low-cost instrument commonly available in diagnostic laboratories. The susceptible strain showed a significant decrease in average mass in on-target microdroplet cultures after 3 hours of incubation with 10 µg/mL methicillin, while the resistant strain showed consistent labeling regardless of methicillin concentration. This assay allows us to confidently detect methicillin resistance in S. aureus after only 3 hours of culture time and minimal sample processing, reducing the turn-around-time significantly over conventional assays. The success of this work suggests its potential as a rapid AST widely applicable in many clinical microbiology labs with minimal additional costs.
Collapse
Affiliation(s)
- Josiah J. Rensner
- Department of Chemistry, Iowa State University, Ames, IA, United States
| | - Paul Lueth
- Department of Veterinary Microbiology and Preventative Medicine, Iowa State University, Ames, IA, United States
| | - Bryan H. Bellaire
- Department of Veterinary Microbiology and Preventative Medicine, Iowa State University, Ames, IA, United States
| | - Orhan Sahin
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA, United States
| | - Young Jin Lee
- Department of Chemistry, Iowa State University, Ames, IA, United States
| |
Collapse
|
6
|
Pang J, Beyi AF, Looft T, Zhang Q, Sahin O. Fecal Microbiota Transplantation Reduces Campylobacter jejuni Colonization in Young Broiler Chickens Challenged by Oral Gavage but Not by Seeder Birds. Antibiotics (Basel) 2023; 12:1503. [PMID: 37887204 PMCID: PMC10604036 DOI: 10.3390/antibiotics12101503] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 09/28/2023] [Accepted: 09/30/2023] [Indexed: 10/28/2023] Open
Abstract
Campylobacter spp., particularly C. jejuni and C. coli, are major food safety concerns, transmitted to humans mainly via contaminated poultry meat. In a previous study, we found that some commercial broiler farms consistently produced Campylobacter-free flocks while others consistently reared Campylobacter-colonized flocks, and significant differences in the gut microbiota compositions between the two types of farm categories were revealed. Therefore, we hypothesized that gut microbiota influences Campylobacter colonization in poultry and that the microbiota from Campylobacter-free flocks may confer colonization resistance to Campylobacter in the chicken intestine. In this study, two fecal microbiota transplantation (FMT) trials were performed to test the hypothesis. Newly hatched chicks were given FMT via oral gavage of the cecal content of Campylobacter-free adult chickens (treatment groups) or PBS (control groups) before the feed consumption. Approximately two weeks after the FMT, the birds were challenged with C. jejuni either by oral gavage (trial 1) or by co-mingling with Campylobacter-colonized seeder birds (trial 2) to evaluate the potential protective effect of the FMT. Cecal contents were collected (3 times, 5 days apart) to determine the Campylobacter colonization levels via culture and microbiota compositions via 16S rRNA gene sequencing. FMT reduced cecal Campylobacter colonization significantly (log10 1.2-2.54 CFU/g) in trial 1 but not in trial 2, although FMT significantly impacted the diversity and compositions of the gut microbiota in both trials. Several genera, such as Butyricimonas, Parabacteroides, Parasutterella, Bilophila, Fournierella, Phascolarctobacterium, and Helicobacter, had increased abundance in the FMT-treated groups in both trials. Furthermore, Campylobacter abundance was found to be negatively correlated with the Escherichia and Ruminococcus_torques_group genera. These findings indicate that even though FMT with adult cecal microbiota can positively affect the subsequent development of the gut microbiota in young broilers, its inhibitory effect on Campylobacter colonization varies and appears to be influenced by the challenge models.
Collapse
Affiliation(s)
- Jinji Pang
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA; (J.P.); (A.F.B.); (Q.Z.)
- Department of Statistics, Iowa State University, Ames, IA 50011, USA
| | - Ashenafi Feyisa Beyi
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA; (J.P.); (A.F.B.); (Q.Z.)
| | - Torey Looft
- National Animal Disease Center, United States Department of Agriculture, Ames, IA 50010, USA;
| | - Qijing Zhang
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA; (J.P.); (A.F.B.); (Q.Z.)
| | - Orhan Sahin
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
| |
Collapse
|
7
|
Wahid KA, Khriguian J, Dede C, Khamis Y, El-Habashy D, Restrepo N, Tehami S, Sahin O, Mohamed AS, Fuller CD, Naser M. Deep Learning Based Prognostic Prediction in Oropharyngeal Cancer Patients Using Multiparametric MRI Inputs. Int J Radiat Oncol Biol Phys 2023; 117:e631. [PMID: 37785885 DOI: 10.1016/j.ijrobp.2023.06.2027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) While prognostic outcomes for oropharyngeal cancer (OPC) patients have improved in recent years, patients still face a non-negligible risk of disease recurrence or death. Accurately predicting post-therapy prognosis would be highly valuable for risk stratification and treatment guidance for OPC patients. Recent studies using PET/CT data have demonstrated the effectiveness of large-scale, end-to-end image-based deep learning (DL) models for predicting progression-free survival (PFS) in OPC patients. Multiparametric MRI (mpMRI), which combines anatomical and functional MRI sequences, has the potential to offer similar results, and has the added advantage of high-frequency longitudinal imaging capabilities, such as through MR-Linac devices. Therefore, this study aimed to develop a DL model using mpMRI data to predict PFS, and to evaluate the impact of anatomical and functional input channels on model performance. MATERIALS/METHODS From a large-scale head and neck cancer database at MD Anderson Cancer Center, treatment-naïve OPC patients with available pre-radiotherapy mpMRI imaging were selected for this study. mpMRI images used for this study included T2-weighted images (T2) and apparent diffusion coefficient (ADC) maps. PFS event status was defined as having either a local, regional, or distant failure, and/or death; data were right censored if an event had not occurred. Images were resampled to the T2 resolution, normalized to a [-1,1] scale, and cropped to the field of view of the ADC image for use in DL models. A DL convolutional neural network model based on the DenseNet121 architecture from the Medical Open Network for AI (MONAI) Python package using a negative log-likelihood loss function was implemented. The model used mpMRI images as input channels and 20 output channels representing the different time intervals of the predicted PFS conditional probabilities of surviving that time interval; final PFS in days was obtained by summing the cumulative probability of surviving each interval times the interval duration. A 5-fold cross validation approach was used for model training and evaluation. Separate models using only T2, only ADC, and T2 + ADC channel inputs were compared. Model performance was measured using the C-index. RESULTS Out of 1154 patients, 404 met inclusion criteria. The overall PFS event rate was 16%. Median C-index values from the 5-fold cross validation were 0.62, 0.67, and 0.69 for the ADC, T2, and T2+ADC models, respectively. CONCLUSION Using large-scale datasets and open-source DL implementations, we find that OPC PFS prediction models using mpMRI data yield modest but comparable performance to existing models (i.e., state-of-the-art reference performance using PET/CT). Moreover, combining mpMRI channels may increase the performance of models for OPC prognostic prediction. Future work will involve integration of additional timepoints, additional mpMRI images, clinical variables, and saliency maps.
Collapse
Affiliation(s)
- K A Wahid
- MD Anderson Cancer Center, Houston, TX
| | - J Khriguian
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - C Dede
- MD Anderson Cancer Center, Houston, TX
| | - Y Khamis
- MD Anderson Cancer Center, Houston, TX
| | | | | | - S Tehami
- MD Anderson Cancer Center, Houston, TX
| | - O Sahin
- MD Anderson Cancer Center, Houston, TX
| | - A S Mohamed
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - C D Fuller
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - M Naser
- MD Anderson Cancer Center, Houston, TX
| |
Collapse
|
8
|
Sahin O, Wahid KA, Taku N, He R, Naser M, Mohamed AS, Fuller CD. Multi-Specialty Physician Performance in Predicting Radiographic Extranodal Extension in Nodal Metastases of Oropharyngeal Squamous Carcinoma. Int J Radiat Oncol Biol Phys 2023; 117:e621. [PMID: 37785862 DOI: 10.1016/j.ijrobp.2023.06.2005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) The presence of extranodal extension (ENE) in oropharyngeal (OPC) cancer patients is an important prognostic factor and can be used to determine the optimal course of treatment; however, currently, the gold standard method for ENE assessment is performed pathologically, which can only be done in a post-hoc fashion after surgical treatment has already been performed. Anatomic imaging features are being explored as a possible method for the pre-therapeutic determination of ENE, but there is currently no objective standard for the assessment of ENE from radiographic images. In this study we recruited expert clinicians, including surgeons, radiation oncologists, and radiologists, across multiple institutions to individually evaluate the presence of ENE from CT scans in order to assess the performance of radiographic ENE evaluation in human experts across different specialties. MATERIALS/METHODS Pre-therapy contrast-enhanced CT scans were collected from 25 OPC patients with lymph node metastasis that were pathologically evaluated for ENE after surgical resection. 5 scans were randomly chosen to be duplicated and left/right inverted, resulting in a total of 30 scans of which 21 had pathologically-confirmed ENE. To hide the inversion, all images were cropped to only show the oropharynx region. 34 expert head and neck cancer physicians, comprised of 12 surgeons, 11 radiation oncologists, and 11 radiologists, then separately evaluated the 30 CT scans using 3D Slicer for ENE presence or absence with their prediction confidence. For each physician, discriminative performance metrics were measured by calculating the accuracy, sensitivity, specificity, area under the receiver-operating characteristic curve (AUC), and Brier score, a measure of the probabilistic prediction accuracy calculated from their confidence where a lower Brier score is better. Statistical tests were performed using the Mann Whitney U test. RESULTS The median (interquartile) study results are shown in Table 1. There was no statistically significant difference among groups for accuracy or AUC, but significant differences among groups for Brier score, sensitivity, and specificity. CONCLUSION In this study we provide evidence that expert physicians, regardless of specialty, show poor performance in assessing the presence of ENE from CT scans in OPC patients. These results agree with conclusions from previous literature, and suggest the need for further research in the automated analysis of radiographic ENE.
Collapse
Affiliation(s)
- O Sahin
- McGovern Medical School, Houston, TX
| | - K A Wahid
- MD Anderson Cancer Center, Houston, TX
| | - N Taku
- The University of Texas MD Anderson Cancer Center, Houston, TX
| | - R He
- MD Anderson Cancer Center, Houston, TX
| | - M Naser
- MD Anderson Cancer Center, Houston, TX
| | - A S Mohamed
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - C D Fuller
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| |
Collapse
|
9
|
Ruddell B, Hassall A, Moss WN, Sahin O, Plummer PJ, Zhang Q, Kreuder AJ. Direct interaction of small non-coding RNAs CjNC140 and CjNC110 optimizes expression of key pathogenic phenotypes of Campylobacter jejuni. mBio 2023; 14:e0083323. [PMID: 37409826 PMCID: PMC10470494 DOI: 10.1128/mbio.00833-23] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 04/18/2023] [Indexed: 07/07/2023] Open
Abstract
Small non-coding RNAs (sRNAs) are important players in modulating gene expression in bacterial pathogens, but their functions are largely undetermined in Campylobacter jejuni, an important cause of foodborne gastroenteritis in humans. In this study, we elucidated the functions of sRNA CjNC140 and its interaction with CjNC110, a previously characterized sRNA involved in the regulation of several virulence phenotypes of C. jejuni. Inactivation of CjNC140 increased motility, autoagglutination, L-methionine concentration, autoinducer-2 production, hydrogen peroxide resistance, and early chicken colonization, indicating a primarily inhibitory role of CjNC140 for these phenotypes. Apart from motility, all these effects directly contrasted the previously demonstrated positive regulation by CjNC110, suggesting that CjNC110 and CjNC140 operate in an opposite manner to modulate physiologic processes in C. jejuni. RNAseq and northern blotting further demonstrated that expression of CjNC140 increased in the absence of CjNC110, while expression of CjNC110 decreased in the absence of CjNC140, suggesting a possibility of their direct interaction. Indeed, electrophoretic mobility shift assay demonstrated a direct binding between the two sRNAs via GA- (CjNC110) and CU- (CjNC140) rich stem-loops. Additionally, RNAseq and follow-up experiments identified that CjNC140 positively regulates p19, which encodes a key iron uptake transporter in Campylobacter. Furthermore, computational analysis revealed both CjNC140 and CjNC110 are highly conserved in C. jejuni, and the predicted secondary structures support CjNC140 as a functional homolog of the iron regulatory sRNA, RyhB. These findings establish CjNC140 and CjNC110 as a key checks-and- balances mechanism in maintaining homeostasis of gene expression and optimizing phenotypes critical for C. jejuni pathobiology. IMPORTANCE Gene regulation is critical to all aspects of pathogenesis of bacterial disease, and small non-coding RNAs (sRNAs) represent a new frontier in gene regulation of bacteria. In Campylobacter jejuni, the role of sRNAs remains largely unexplored. Here, we investigate the role of two highly conserved sRNAs, CjNC110 and CjNC140, and demonstrate that CjNC140 displays a primarily inhibitory role in contrast to a primarily activating role for CjNC110 for several key virulence-associated phenotypes. Our results also revealed that the sRNA regulatory pathway is intertwined with the iron uptake system, another virulence mechanism critical for in vivo colonization. These findings open a new direction for understanding C. jejuni pathobiology and identify potential targets for intervention for this major foodborne pathogen.
Collapse
Affiliation(s)
- Brandon Ruddell
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA
- National Institute of Antimicrobial Resistance Research and Education (NIAMRRE), Iowa State University Research Park, Ames, Iowa, USA
| | - Alan Hassall
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA
| | - Walter N. Moss
- The Roy J. Carver Department of Biochemistry, Biophysics, and Molecular Biology, Iowa State University, Ames, Iowa, USA
| | - Orhan Sahin
- National Institute of Antimicrobial Resistance Research and Education (NIAMRRE), Iowa State University Research Park, Ames, Iowa, USA
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA
| | - Paul J. Plummer
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA
- National Institute of Antimicrobial Resistance Research and Education (NIAMRRE), Iowa State University Research Park, Ames, Iowa, USA
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA
| | - Qijing Zhang
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA
- National Institute of Antimicrobial Resistance Research and Education (NIAMRRE), Iowa State University Research Park, Ames, Iowa, USA
| | - Amanda J. Kreuder
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA
- National Institute of Antimicrobial Resistance Research and Education (NIAMRRE), Iowa State University Research Park, Ames, Iowa, USA
| |
Collapse
|
10
|
Mugabi R, Silva APSP, Hu X, Gottschalk M, Aragon V, Macedo NR, Sahin O, Harms P, Main R, Tucker AW, Li G, Clavijo MJ. Molecular characterization of Glaesserella parasuis strains circulating in North American swine production systems. BMC Vet Res 2023; 19:135. [PMID: 37641044 PMCID: PMC10464461 DOI: 10.1186/s12917-023-03698-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 03/24/2023] [Accepted: 08/18/2023] [Indexed: 08/31/2023] Open
Abstract
BACKGROUND Glaesserella parasuis is the causative agent of Glässer's disease in pigs. Serotyping is the most common method used to type G. parasuis isolates. However, the high number of non-typables (NT) and low discriminatory power make serotyping problematic. In this study, 218 field clinical isolates and 15 G. parasuis reference strains were whole-genome sequenced (WGS). Multilocus sequence types (MLST), serotypes, core-genome phylogeny, antimicrobial resistance (AMR) genes, and putative virulence gene information was extracted. RESULTS In silico WGS serotyping identified 11 of 15 serotypes. The most frequently detected serotypes were 7, 13, 4, and 2. MLST identified 72 sequence types (STs), of which 66 were novel. The most predominant ST was ST454. Core-genome phylogeny depicted 3 primary lineages (LI, LII, and LIII), with LIIIA sublineage isolates lacking all vtaA genes, based on the structure of the phylogenetic tree and the number of virulence genes. At least one group 1 vtaA virulence genes were observed in most isolates (97.2%), except for serotype 8 (ST299 and ST406), 15 (ST408 and ST552) and NT (ST448). A few group 1 vtaA genes were significantly associated with certain serotypes or STs. The putative virulence gene lsgB, was detected in 8.3% of the isolates which were predominantly of serotype 5/12. While most isolates carried the bcr, ksgA, and bacA genes, the following antimicrobial resistant genes were detected in lower frequency; blaZ (6.9%), tetM (3.7%), spc (3.7%), tetB (2.8%), bla-ROB-1 (1.8%), ermA (1.8%), strA (1.4%), qnrB (0.5%), and aph3''Ia (0.5%). CONCLUSION: This study showed the use of WGS to type G. parasuis isolates and can be considered an alternative to the more labor-intensive and traditional serotyping and standard MLST. Core-genome phylogeny provided the best strain discrimination. These findings will lead to a better understanding of the molecular epidemiology and virulence in G. parasuis that can be applied to the future development of diagnostic tools, autogenous vaccines, evaluation of antibiotic use, prevention, and disease control.
Collapse
Affiliation(s)
- Robert Mugabi
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA, USA
| | - Ana Paula S Poeta Silva
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA, USA
| | - Xiao Hu
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA, USA
| | - Marcelo Gottschalk
- Groupe de Recherche Sur Les Maladies Infectieuses du Porc, Faculté de Médecine Vétérinaire, Université de Montréal, Montréal, Canada
| | - Virginia Aragon
- Centre de Recerca en Sanitat Animal (CReSA), Unitat Mixta d'Investigació IRTA-UAB en Sanitat Animal, UniversitatAutònoma de Barcelona (UAB), Campus, Bellaterra, Barcelona, Spain
- Programa de Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), IRTA, UniversitatAutònoma de Barcelona (UAB), Campus, Bellaterra, Barcelona, Spain
- WOAH Collaborating Centre for the Research and Control of Emerging and Re-Emerging Swine Diseases in Europe (IRTA-CReSA), Bellaterra, Barcelona, Spain
| | - Nubia R Macedo
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA, USA
| | - Orhan Sahin
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA, USA
| | | | - Rodger Main
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA, USA
| | - Alexander W Tucker
- Department of Veterinary Medicine, University of Cambridge, Cambridge, CB3 0ES, UK
| | - Ganwu Li
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA, USA
| | - Maria J Clavijo
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA, USA.
- PIC North America, Hendersonville, TN, USA.
| |
Collapse
|
11
|
Pang J, Looft T, Zhang Q, Sahin O. Deciphering the Association between Campylobacter Colonization and Microbiota Composition in the Intestine of Commercial Broilers. Microorganisms 2023; 11:1724. [PMID: 37512896 PMCID: PMC10386351 DOI: 10.3390/microorganisms11071724] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/19/2023] [Accepted: 06/29/2023] [Indexed: 07/30/2023] Open
Abstract
Campylobacter is a major food safety concern and is transmitted mainly via poultry meat. We previously found that some commercial broiler farms consistently produced Campylobacter-negative flocks while others were consistently Campylobacter-positive for consecutive production cycles although the farms operated under similar management practices. We hypothesized that this difference in Campylobacter colonization might be associated with the gut microbiota composition. To address this, six commercial broiler farms were selected based on their Campylobacter status (three negative and three positive) to evaluate the microbiota differences between each farm category. For each farm on each production cycle (2-3 cycles), 40 ceca collected from five-week-old broilers were processed for microbiota analysis via 16S rRNA gene sequencing. Cecal microbiota species richness, phylogenetic diversity, community structure, and composition of Campylobacter-positive farms were noticeably different from those of Campylobacter-negative farms. Rikenella, Methanocorpusculum, Barnesiella, Parasutterella, and Helicobacter were significantly more abundant among Campylobacter-positive farms. In contrast, Ruminococcaceae, Streptococcus, Escherichia, Eggerthellaceae, Lactobacillus, Monoglobus, and Blausia were more abundant in Campylobacter-negative farms. Eggerthellaceae, Clostridia, Lachnospiraceae, Lactobacillus, Monoglobus, and Parabacteroides were significantly negatively correlated with Campylobacter abundance. These findings suggest that specific members of cecal microbiota may influence Campylobacter colonization in commercial broilers and may be further explored to control Campylobacter in poultry.
Collapse
Affiliation(s)
- Jinji Pang
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
| | - Torey Looft
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
- National Animal Disease Center, United States Department of Agriculture, Ames, IA 50010, USA
| | - Qijing Zhang
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
| | - Orhan Sahin
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
| |
Collapse
|
12
|
Aydin F, Kayman T, Abay S, Hizlisoy H, Saticioğlu İB, Karakaya E, Sahin O. MLST genotypes and quinolone resistance profiles of Campylobacter jejuni isolates from various sources in Turkey. Int J Food Microbiol 2023; 391-393:110137. [PMID: 36842255 DOI: 10.1016/j.ijfoodmicro.2023.110137] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 11/22/2022] [Revised: 01/17/2023] [Accepted: 02/10/2023] [Indexed: 02/22/2023]
Abstract
This study was conducted to determine the overall genetic diversity, as well as prevalence and mechanisms of resistance to quinolone antibiotics of 178 Campylobacter jejuni isolated from humans, cattle, dogs, and chickens in Turkey. Multilocus sequence typing (MLST) and E-test were performed for genotyping and antimicrobial susceptibility testing, respectively. Mismatch Amplification Mutation Assay, Polymerase Chain Reaction (MAMA-PCR) was used to detect point mutations associated with quinolone resistance. Of the 178 isolates tested, 151 were included in 21 clonal complexes (CCs); the remaining 27 isolates did not belong to any existing CCs. CC21, CC353, CC206, and CC257 were the predominant clones, representing 38 % of all C. jejuni isolates tested. The isolates were assigned to 78 different sequence types (STs), three of which were novel (ST 8082, ST 8083, and ST 8084). Resistance to quinolones was found in 73 (41 %) of the isolates (42.85 %, 2.85 %, 20.58 %, and 43.75 % in human, cattle, dog, and chicken isolates, respectively). All of the resistant isolates had Thr-86-Ile mutation in the gyrA gene. The highest Sorensen coefficient index was detected for human/chicken meat and human/dog C. jejuni isolates (Ss = 0.71), suggesting a strong link between the isolates from respective sources. The Simpson diversity index of C. jejuni isolates analyzed was detected between 0.92 and 0.98. The study provides detailed information on the quinolone resistance and MLST-based genetic relatedness of C. jejuni isolates from humans, cattle, dog, and broiler meat in Turkey for the first time, enabling a better understanding of the transmission pathways of C. jejuni in this country. Our results suggest that broiler meat and dogs may be the most important sources of human campylobacteriosis in Turkey.
Collapse
Affiliation(s)
- Fuat Aydin
- Erciyes University, Faculty of Veterinary Medicine, Department of Microbiology, Kayseri, Türkiye
| | - Tuba Kayman
- Kırıkkale University, Faculty of Medicine, Department of Medical Microbiology, Kırıkkale, Türkiye
| | - Seçil Abay
- Erciyes University, Faculty of Veterinary Medicine, Department of Microbiology, Kayseri, Türkiye.
| | - Harun Hizlisoy
- Erciyes University, Faculty of Veterinary Medicine, Department of Veterinary Public Health, Kayseri, Türkiye
| | - İzzet Burçin Saticioğlu
- Bursa Uludag University, Faculty of Veterinary Medicine, Department of Aquatic Animal Diseases, Bursa, Türkiye
| | - Emre Karakaya
- Erciyes University, Faculty of Veterinary Medicine, Department of Microbiology, Kayseri, Türkiye
| | - Orhan Sahin
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, USA
| |
Collapse
|
13
|
Sahin O, Akturk G, Cilaker Micili S, Gursoy Doruk O, Karapinar F, Hocaoglu N, Ergur BU, Akan P, Tuncok Y, Kalkan S. Effect of the selective mitochondrial KATP channel opener nicorandil on the QT prolongation and myocardial damage induced by amitriptyline in rats. J Pharm Pharmacol 2023; 75:415-426. [PMID: 36527252 DOI: 10.1093/jpp/rgac089] [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: 05/16/2022] [Accepted: 11/10/2022] [Indexed: 12/23/2022]
Abstract
OBJECTIVES The aim of this study is to evaluate the protective effect of nicorandil, a selective mitochondrial KATP channel opener, on QT prolongation and myocardial damage induced by amitriptyline. METHODS The dose of amitriptyline (intraperitoneal, i.p.) that prolong the QT interval was found 75 mg/kg. Rats were randomized into five groups the control group, amitriptyline group, nicorandil (selective mitochondrial KATP channel opener, 3 mg/kg i.p.) + amitriptyline group, 5-hdyroxydecanoate (5-HD, selective mitochondrial KATP channel blocker, 10 mg/kg i.p.) + amitriptyline group and 5-HD + nicorandil + amitriptyline group. Cardiac parameters, biochemical and histomorphological/immunohistochemical examinations were evaluated. p < 0.05 was accepted as statistically significant. KEY FINDINGS Amitriptyline caused statistically significant prolongation of QRS duration, QT interval and QTc interval (p < 0.05). It also caused changes in tissue oxidant (increase in malondialdehyde)/anti-oxidant (decrease in glutathione peroxidase) parameters (p < 0.05), myocardial damage and apoptosis (p < 0.01 and p < 0.001). While nicorandil administration prevented amitriptyline-induced QRS, QT, QTc prolongation (p < 0.05), myocardial damage and apoptosis (p < 0.05), it did not affect the changes in oxidative parameters (p > 0.05). CONCLUSIONS Our results suggest that nicorandil, a selective mitochondrial KATP channel opener, plays a protective role in amitriptyline-induced QT prolongation and myocardial damage. Mitochondrial KATP channel opening and anti-apoptotic effects may play a role in the cardioprotective effect of nicorandil.
Collapse
Affiliation(s)
- Orhan Sahin
- Dokuz Eylul University, School of Medicine, Department of Medical Pharmacology, Izmir, Turkey
| | - Gozde Akturk
- Dokuz Eylul University, School of Medicine, Department of Medical Pharmacology, Izmir, Turkey.,Mustafa Kemal University, School of Medicine, Department of Medical Pharmacology, Hatay, Turkey
| | - Serap Cilaker Micili
- Dokuz Eylul University, School of Medicine, Department of Histology and Embryology, Izmir, Turkey
| | - Ozlem Gursoy Doruk
- Dokuz Eylul University, School of Medicine, Department of Medical Biochemistry, Izmir, Turkey
| | - Fazilet Karapinar
- Dokuz Eylul University, School of Medicine, Department of Medical Pharmacology, Izmir, Turkey
| | - Nil Hocaoglu
- Dokuz Eylul University, School of Medicine, Department of Medical Pharmacology, Izmir, Turkey
| | - Bekir Ugur Ergur
- Dokuz Eylul University, School of Medicine, Department of Histology and Embryology, Izmir, Turkey.,Kyrenia University, School of Medicine, Department of Histology and Embryology, Kyrenia, Cyprus
| | - Pinar Akan
- Dokuz Eylul University, School of Medicine, Department of Medical Biochemistry, Izmir, Turkey
| | - Yesim Tuncok
- Dokuz Eylul University, School of Medicine, Department of Medical Pharmacology, Izmir, Turkey
| | - Sule Kalkan
- Dokuz Eylul University, School of Medicine, Department of Medical Pharmacology, Izmir, Turkey
| |
Collapse
|
14
|
Goulart DB, Zhang Q, Sahin O. Growth kinetics and fitness of fluoroquinolone resistant and susceptible Campylobacter jejuni strains of cattle origin. Front Vet Sci 2023; 10:1117975. [PMID: 37143492 PMCID: PMC10151759 DOI: 10.3389/fvets.2023.1117975] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 03/31/2023] [Indexed: 05/06/2023] Open
Abstract
Human enterocolitis is frequently caused by the Gram-negative microaerobic bacterium Campylobacter jejuni. Macrolides (e.g., erythromycin) and fluoroquinolones (FQs) (e.g., ciprofloxacin) are the preferred antibiotics for the treatment of human campylobacteriosis. Rapid emergence of FQ-resistant (FQ-R) Campylobacter during treatment with FQ antimicrobials is well known to occur in poultry. Cattle is also an important reservoir of Campylobacter for humans, and FQ-R Campylobacter from cattle has become highly prevalent in recent years. Even though the selection pressure may have contributed to the expansion of FQ-R Campylobacter, the actual impact of this factor appears to be rather low. In this study, we examined the hypothesis that the fitness of FQ-R Campylobacter may have also played a role in the rise seen in FQ-R Campylobacter isolates by employing a series of in vitro experiments in MH broth and bovine fecal extract. First, it was shown that FQ-R and FQ-susceptible (FQ-S) C. jejuni strains of cattle origin had comparable growth rates when individually cultured in both MH broth and the fecal extract with no antibiotic present. Interestingly, FQ-R strains had small but statistically significant increases over FQ-S strains in growth in competition experiments performed in mixed cultures with no antibiotic present. Lastly, it was observed that FQ-S C. jejuni strains developed resistance to ciprofloxacin more readily at high initial bacterial cell density (107 CFU/mL) and when exposed to low levels of the antibiotic (2-4 μg/mL) compared with that at a low level of initial bacterial cell density (105 CFU/mL) and exposure to a high level of ciprofloxacin (20 μg/mL) in both MH broth and the fecal extract. Altogether, these findings indicate that even though FQ-R C. jejuni of cattle origin may have a slightly higher fitness advantage over the FQ-S population, the emergence of FQ-R mutants from susceptible strains is primarily dictated by the bacterial cell density and the antibiotic concentration exposed under in vitro condition. These observation may also provide plausible explanations for the high prevalence of FQ-R C. jejuni in cattle production due to its overall fit nature in the absence of antibiotic selection pressure and for the paucity of development of FQ-R C. jejuni in the cattle intestine in response to FQ-treatment, as observed in our recent studies.
Collapse
Affiliation(s)
- Debora Brito Goulart
- Department of Veterinary Microbiology and Preventive Medicine, Iowa State University, Ames, IA, United States
| | - Qijing Zhang
- Department of Veterinary Microbiology and Preventive Medicine, Iowa State University, Ames, IA, United States
| | - Orhan Sahin
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA, United States
- *Correspondence: Orhan Sahin,
| |
Collapse
|
15
|
Ruzante JM, Harris B, Plummer P, Raineri RR, Loy JD, Jacob M, Sahin O, Kreuder AJ. Surveillance of antimicrobial resistance in veterinary medicine in the United States: Current efforts, challenges, and opportunities. Front Vet Sci 2022; 9:1068406. [PMID: 36605768 PMCID: PMC9807758 DOI: 10.3389/fvets.2022.1068406] [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: 10/12/2022] [Accepted: 11/29/2022] [Indexed: 12/24/2022] Open
Abstract
Antimicrobial resistance (AMR) is a global problem facing human, animal, plant, and environmental health by threatening our ability to effectively treat bacterial infections with antimicrobials. In the United States, robust surveillance efforts exist to collect, analyze, and disseminate AMR data in human health care settings. These tools enable the development of effective infection control methods, the detection of trends, and provide the evidence needed to guide stewardship efforts to reduce the potential for emergence and further spread of AMR. However, in veterinary medicine, there are currently no known equivalent tools. This paper reviews efforts in the United States related to surveillance of AMR in veterinary medicine and discusses the challenges and opportunities of using data from veterinary diagnostic laboratories to build a comprehensive AMR surveillance program that will support stewardship efforts and help control AMR in both humans and animals.
Collapse
Affiliation(s)
- Juliana M. Ruzante
- Center for Environmental Health Risk and Sustainability, RTI International, Durham, NC, United States
| | - Beth Harris
- National Animal Health Laboratory Network, National Veterinary Services Laboratories, U. S. Department of Agriculture, Animal and Plant Health Inspection Service, Ames, IA, United States
| | - Paul Plummer
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States,National Institute of Antimicrobial Resistance Research and Education, Ames, IA, United States
| | - Raissa R. Raineri
- National Institute of Antimicrobial Resistance Research and Education, Ames, IA, United States,Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - John Dustin Loy
- Nebraska Veterinary Diagnostic Center, School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, Lincoln, NE, United States
| | - Megan Jacob
- Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, United States
| | - Orhan Sahin
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States,National Institute of Antimicrobial Resistance Research and Education, Ames, IA, United States
| | - Amanda J. Kreuder
- National Institute of Antimicrobial Resistance Research and Education, Ames, IA, United States,Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States,*Correspondence: Amanda J. Kreuder
| |
Collapse
|
16
|
Uyanik A, Sahin O, Akceylan E, Eymur S, Uyanik I, Yilmaz M. Effect of Calix[4]arene as a Hydrophobic Substituent on Proline Catalysis of Direct Asymmetric Aldol Reactions in the Presence of Water. RUSS J GEN CHEM+ 2022. [DOI: 10.1134/s107036322211024x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
17
|
Goulart DB, Beyi AF, Wu Z, Adiguzel MC, Wilson S, Xu C, Pang J, Dewell R, Dewell GA, Plummer PJ, Zhang Q, Sahin O. Influence of Single Dose Enrofloxacin Injection on Development of Fluoroquinolone Resistance in Campylobacter jejuni in Calves. Antibiotics (Basel) 2022; 11:antibiotics11101407. [PMID: 36290067 PMCID: PMC9598087 DOI: 10.3390/antibiotics11101407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/02/2022] [Accepted: 10/11/2022] [Indexed: 11/29/2022] Open
Abstract
Fluoroquinolone (FQ) resistance in a major foodborne bacterial pathogen, Campylobacter jejuni, derived from cattle has recently become prevalent and poses a significant public health concern. However, the underlying factors for this increase are not entirely clear. To evaluate the effect of enrofloxacin treatment on FQ-resistance development in C. jejuni, 35 commercial calves were equally divided into five groups (Groups 1–5) and were orally inoculated with FQ-susceptible (FQ-S) C. jejuni. Eight days later, Groups 4 and 5 were challenged with Mannheimia haemolytica via a transtracheal route to induce a respiratory disease; after 8 days, Groups 2, 3, 4, and 5 were injected subcutaneously with enrofloxacin (7.5 mg/kg for Groups 2 and 4, and 12.5 mg/kg for Groups 3 and 5). Colonization levels by FQ-resistant (FQ-R) and FQ-S Campylobacter in rectal feces were determined via differential culture throughout the experiment. Before oral inoculation with C. jejuni, only five calves were naturally colonized by Campylobacter, four of which were also colonized by FQ-R C. jejuni (three in Group 1 and one in Group 3). Soon after the oral inoculation, almost all calves in the groups became stably colonized by FQ-S C. jejuni (~3–6 log10 CFU/g), except that the four calves that were pre-colonized before inoculation remained positive with both FQ-R and FQ-S C. jejuni. Following enrofloxacin administration, C. jejuni colonization declined sharply and rapidly in all treated groups to undetectable levels; however, the vast majority of the animals were recolonized by C. jejuni at comparable levels 72 h after the treatment. Notably, no FQ-R C. jejuni was detected in any of the calves that received enrofloxacin, regardless of the drug dose used or disease status of the animals. The lack of detection of FQ-R C. jejuni was likely due to the localized high concentration of the antibiotic in the intestine, which may have prevented the emergence of the FQ-R mutant. These findings indicate that single-dose enrofloxacin use in cattle poses a low risk for selection of de novo FQ-R mutants in C. jejuni.
Collapse
Affiliation(s)
- Debora Brito Goulart
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
| | - Ashenafi Feyisa Beyi
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
| | - Zuowei Wu
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
| | - Mehmet Cemal Adiguzel
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
| | - Samantha Wilson
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
| | - Changyun Xu
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
| | - Jinji Pang
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
| | - Renee Dewell
- Center for Food Security and Public Health, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
| | - Grant A. Dewell
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
| | - Paul J. Plummer
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
- National Institute of Antimicrobial Resistance Research and Education, Iowa State University, Ames, IA 50010, USA
| | - Qijing Zhang
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
| | - Orhan Sahin
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
- Correspondence:
| |
Collapse
|
18
|
Šimunović K, Sahin O, Erega A, Štefanič P, Zhang Q, Mandic Mulec I, Smole Možina S, Klančnik A. Bacillus subtilis PS-216 Spores Supplemented in Broiler Chicken Drinking Water Reduce Campylobacter jejuni Colonization and Increases Weight Gain. Front Microbiol 2022; 13:910616. [PMID: 35875550 PMCID: PMC9304915 DOI: 10.3389/fmicb.2022.910616] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 06/20/2022] [Indexed: 11/13/2022] Open
Abstract
Campylobacter jejuni is the leading cause of bacterial gastroenteritis, or campylobacteriosis, in humans worldwide, and poultry serves as a major source of infection. To reduce the risk associated with C. jejuni transmission via poultry meat, effective interventions during poultry production are needed, and the use of probiotics is a promising approach. In this study, 15 Bacillus subtilis strains were initially screened for their anti-Campylobacter activities. B. subtilis PS-216 strain demonstrated the best anti-Campylobacter activity against 15 C. jejuni isolates when examined using in vitro co-cultures. To evaluate the suitability of B. subtilis PS-216 for probiotic use, its susceptibility to eight clinically important antimicrobials and simulated gastric conditions was investigated. B. subtilis PS-216 was sensitive to all of the tested antibiotics. Although vegetative cells were sensitive to gastric conditions, B. subtilis PS-216 spores were highly resistant. We further evaluated the use of a B. subtilis PS-216 spore preparation (2.5 × 106 CFU/mL water) to prevent and/or reduce C. jejuni colonization in broiler chickens in vivo. Compared to the untreated group, significantly lower Campylobacter counts were detected in caeca of broilers continuously treated with B. subtilis PS-216 spores in their drinking water. Furthermore, broilers continuously treated with B. subtilis PS-216 spores showed improved weight gain, compared to the control group. Together, these results demonstrate the potential of B. subtilis PS-216 for use in poultry to reduce C. jejuni colonization and improve weight gain.
Collapse
Affiliation(s)
- Katarina Šimunović
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
- Department of Microbiology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Orhan Sahin
- Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Andi Erega
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
- Department of Microbiology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Polonca Štefanič
- Department of Microbiology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Qijing Zhang
- Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Ines Mandic Mulec
- Department of Microbiology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Sonja Smole Možina
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Anja Klančnik
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
- *Correspondence: Anja Klančnik,
| |
Collapse
|
19
|
Siepker CL, Schwartz KJ, Feldhacker TJ, Magstadt DR, Sahin O, Almeida M, Li G, Hayman KP, Gorden PJ. Salmonella enterica serovar Brandenburg abortions in dairy cattle. J Vet Diagn Invest 2022; 34:864-869. [PMID: 35762117 DOI: 10.1177/10406387221105890] [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] [Indexed: 11/17/2022] Open
Abstract
Two separate late-term abortion outbreaks in Jersey heifers in July 2020 and December 2020 were investigated by the Iowa State University Veterinary Diagnostic Laboratory. We evaluated 3 whole fetuses and 11 sets of fresh and formalin-fixed fetal tissues during the course of the outbreaks. The late-term abortions were first identified at a heifer development site and subsequently observed at the dairy farm. Aborted fetuses had moderate-to-marked postmortem autolysis with no gross lesions identified. Observed clinical signs in cows at the dairy farm ranged from intermittent loose stools to acute post-abortion pyrexia and reduced feed intake. Routine histopathology and reproductive bacterial culture revealed acute, suppurative placentitis with moderate-to-heavy growth of Salmonella spp. group B from stomach contents, liver, placenta, and heifer fecal contents. Serotyping identified Salmonella enterica subsp. enterica serovar Brandenburg in all 14 fresh tissue cases, as well as individual and pooled heifer feces. Whole-genome sequencing analysis revealed that all isolates belonged to ST type 873 and possessed typhoid toxin genes, several fimbrial gene clusters, type III secretion system genes, and several pathogenicity islands. Abortions caused by Salmonella Brandenburg have not been reported previously in dairy cattle in the United States, to our knowledge.
Collapse
Affiliation(s)
- Christopher L Siepker
- Departments of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Kent J Schwartz
- Departments of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | | | - Drew R Magstadt
- Departments of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Orhan Sahin
- Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Marcelo Almeida
- Departments of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Ganwu Li
- Departments of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Kristin P Hayman
- Departments of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Patrick J Gorden
- Departments of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| |
Collapse
|
20
|
Sahin O, Aktoz F, Bagci H, Vurgun E. The role of laboratory parameters in predicting severity of COVID-19 disease in pregnant patients. J OBSTET GYNAECOL 2022; 42:1917-1921. [DOI: 10.1080/01443615.2022.2054681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Orhan Sahin
- Department of Obstetrics and Gynecology, Prof. Dr. Cemil Tascioglu City Hospital, Istanbul, Turkey
| | - Fatih Aktoz
- Department of Obstetrics and Gynecology, Istanbul Basaksehir Cam and Sakura City Hospital, Istanbul, Turkey
| | - Helin Bagci
- Department of Obstetrics and Gynecology, Prof. Dr. Cemil Tascioglu City Hospital, Istanbul, Turkey
| | - Eren Vurgun
- Department of Medical Biochemistry, Prof. Dr. Cemil Tascioglu City Hospital, Istanbul, Turkey
| |
Collapse
|
21
|
Genc S, Ozer H, Emeklioglu CN, Cingillioglu B, Sahin O, Akturk E, Sirinoglu HA, Basaran N, Mihmanli V. Relationship between extreme values of first trimester maternal pregnancy associated plasma Protein-A, free-β-human chorionic gonadotropin, nuchal translucency and adverse pregnancy outcomes. Taiwan J Obstet Gynecol 2022; 61:433-440. [PMID: 35595434 DOI: 10.1016/j.tjog.2022.02.043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/07/2022] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVE The aim of our study was to investigate the relationship between extreme values of first trimester screening markers and adverse obstetric outcomes. MATERIALS AND METHODS Our study was conducted by examining the prenatal and postnatal perinatal records of 786 singleton gestations between the ages of 18-40, who applied to Prof. Dr. Cemil Taşçıoğlu City Hospital outpatient clinics for first-trimester screening for aneuploidy, between January 1, 2017 and December 31, 2019. RESULTS The presence of small for gestational age (SGA) was found to be statistically significant for the <5 percentile (<0.37) pregnancy-associated plasma protein A (PAPP-A) group (p = 0.016). For <5 percentile β-hCG group, the presence of gestational diabetes mellitus (GDM), premature rupture of membrane (PROM) and preterm premature rupture of membrane (PPROM) was determined as a statistically significant risk (p = 0.015, p = 0.005, p = 0.02 respectively) In the univariate test, fetal death rate was found to be high for ≥90 percentile at nuchal translucency (NT), but the presence of fetal death was found to be statistically insignificant in logistic regression analysis. (p: 0.057). CONCLUSION First trimester screening test can be used in predicting pregnancy complications. In this study we found that serum levels of PAPP-A are associated with developing SGA, while GDM, PROM and PPROM are more common in low serum free β-hCG.
Collapse
Affiliation(s)
- Simten Genc
- Obstetrics and Gynecology Department Okmeydanı Training and Research Hospital Istanbul, Turkey (Prof. Dr. Cemil Tascıoglu City Hospital), Darulaceze Cad. No:25, Okmeydani, Sisli, 34384, Istanbul, Turkey.
| | - Hale Ozer
- Obstetrics and Gynecology Department Okmeydanı Training and Research Hospital Istanbul, Turkey (Prof. Dr. Cemil Tascıoglu City Hospital), Darulaceze Cad. No:25, Okmeydani, Sisli, 34384, Istanbul, Turkey.
| | - Cagdas Nurettin Emeklioglu
- Obstetrics and Gynecology Department Okmeydanı Training and Research Hospital Istanbul, Turkey (Prof. Dr. Cemil Tascıoglu City Hospital), Darulaceze Cad. No:25, Okmeydani, Sisli, 34384, Istanbul, Turkey.
| | - Basak Cingillioglu
- Obstetrics and Gynecology Department Okmeydanı Training and Research Hospital Istanbul, Turkey (Prof. Dr. Cemil Tascıoglu City Hospital), Darulaceze Cad. No:25, Okmeydani, Sisli, 34384, Istanbul, Turkey.
| | - Orhan Sahin
- Obstetrics and Gynecology Department Okmeydanı Training and Research Hospital Istanbul, Turkey (Prof. Dr. Cemil Tascıoglu City Hospital), Darulaceze Cad. No:25, Okmeydani, Sisli, 34384, Istanbul, Turkey.
| | - Erhan Akturk
- Obstetrics and Gynecology Department Okmeydanı Training and Research Hospital Istanbul, Turkey (Prof. Dr. Cemil Tascıoglu City Hospital), Darulaceze Cad. No:25, Okmeydani, Sisli, 34384, Istanbul, Turkey.
| | - Hicran Acar Sirinoglu
- Obstetrics and Gynecology Department Okmeydanı Training and Research Hospital Istanbul, Turkey (Prof. Dr. Cemil Tascıoglu City Hospital), Darulaceze Cad. No:25, Okmeydani, Sisli, 34384, Istanbul, Turkey.
| | - Nilgun Basaran
- Biochemistry Department Okmeydanı Training and Research Hospital Istanbul, Turkey (Prof. Dr. Cemil Tascıoglu City Hospital), Darulaceze Cad. No:25, Okmeydani, Sisli, 34384, Istanbul, Turkey.
| | - Veli Mihmanli
- Obstetrics and Gynecology Department Okmeydanı Training and Research Hospital Istanbul, Turkey (Prof. Dr. Cemil Tascıoglu City Hospital), Darulaceze Cad. No:25, Okmeydani, Sisli, 34384, Istanbul, Turkey.
| |
Collapse
|
22
|
Adiguzel MC, Schaefer K, Rodriguez T, Ortiz J, Sahin O. Prevalence, Mechanism, Genetic Diversity, and Cross-Resistance Patterns of Methicillin-Resistant Staphylococcus Isolated from Companion Animal Clinical Samples Submitted to a Veterinary Diagnostic Laboratory in the Midwestern United States. Antibiotics (Basel) 2022; 11:antibiotics11050609. [PMID: 35625253 PMCID: PMC9138002 DOI: 10.3390/antibiotics11050609] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 04/26/2022] [Accepted: 04/28/2022] [Indexed: 12/04/2022] Open
Abstract
Methicillin-resistant Staphylococcus (MRS) is a leading cause of skin and soft tissue infections in companion animals, with limited treatment options available due to the frequent cross-resistance of MRS to other antibiotics. In this study, we report the prevalence, species distribution, genetic diversity, resistance mechanism and cross-resistance patterns of MRS isolated from companion animal (mostly dog and cat) clinical cases submitted to Iowa State University Veterinary Diagnostic Laboratory (ISU VDL) between 2012 and 2019. The majority of isolates were identified as Staphylococcus pseudintermedius (68.3%; 2379/3482) and coagulase-negative Staphylococcus (CoNS) (24.6%; 857/3482), of which 23.9% and 40.5% were phenotypically resistant to methicillin, respectively. Cross resistance to other β-lactams (and to a lesser extent to non-β-lactams) was common in both methicillin-resistant S. pseudintermedius (MRSP) and CoNS (MRCoNS), especially when oxacillin MIC was ≥4 μg/mL (vs. ≥0.5−<4 μg/mL). The PBP2a protein was detected by agglutination in 94.6% (521/551) MRSP and 64.3% (146/227) MRCoNS. A further analysis of 31 PBP2a-negative MRS isolates (all but one MRCoNS) indicated that 11 were mecA gene-positive while 20 were negative for mecA and other mec genes by PCR. The resistance to last-resort anti-staphylococcal human drugs (e.g., tigecycline, linezolid, vancomycin) among the MRS tested was none to very low. Even though genotyping indicated an overall high level of genetic diversity (87 unique PFGE patterns and 20 MLST types) among a subset of MRSP isolates tested (n = 106), certain genotypes were detected from epidemiologically connected cases at the same or different time points, suggesting persistence and/or nosocomial transmission. These results indicate a relatively high prevalence of MRS from companion animals in the Midwestern US; therefore, it is important to perform routine susceptibility testing of Staphylococcus in veterinary clinical settings for the selection of appropriate antimicrobial therapy.
Collapse
Affiliation(s)
- Mehmet Cemal Adiguzel
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA; (M.C.A.); (K.S.); (T.R.); (J.O.)
- Department of Microbiology, Faculty of Veterinary Medicine, Ataturk University, Erzurum 25240, Turkey
| | - Kayla Schaefer
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA; (M.C.A.); (K.S.); (T.R.); (J.O.)
| | - Trevor Rodriguez
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA; (M.C.A.); (K.S.); (T.R.); (J.O.)
| | - Jessica Ortiz
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA; (M.C.A.); (K.S.); (T.R.); (J.O.)
| | - Orhan Sahin
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA; (M.C.A.); (K.S.); (T.R.); (J.O.)
- Correspondence: ; Tel.: +1-515-294-3861
| |
Collapse
|
23
|
Shrestha D, Massey N, Bhat SM, Jelesijević T, Sahin O, Zhang Q, Bailey KL, Poole JA, Charavaryamath C. Nrf2 Activation Protects Against Organic Dust and Hydrogen Sulfide Exposure Induced Epithelial Barrier Loss and K. pneumoniae Invasion. Front Cell Infect Microbiol 2022; 12:848773. [PMID: 35521223 PMCID: PMC9062039 DOI: 10.3389/fcimb.2022.848773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 03/21/2022] [Indexed: 11/23/2022] Open
Abstract
Agriculture workers report various respiratory symptoms owing to occupational exposure to organic dust (OD) and various gases. Previously, we demonstrated that pre-exposure to hydrogen sulfide (H2S) alters the host response to OD and induces oxidative stress. Nrf2 is a master-regulator of host antioxidant response and exposures to toxicants is known to reduce Nrf2 activity. The OD exposure-induced lung inflammation is known to increase susceptibility to a secondary microbial infection. We tested the hypothesis that repeated exposure to OD or H2S leads to loss of Nrf2, loss of epithelial cell integrity and that activation of Nrf2 rescues this epithelial barrier dysfunction. Primary normal human bronchial epithelial (NHBE) cells or mouse precision cut-lung slices (PCLS) were treated with media, swine confinement facility organic dust extract (ODE) or H2S or ODE+H2S for one or five days. Cells were also pretreated with vehicle control (DMSO) or RTA-408, a Nrf2 activator. Acute exposure to H2S and ODE+H2S altered the cell morphology, decreased the viability as per the MTT assay, and reduced the Nrf2 expression as well as increased the keap1 levels in NHBE cells. Repeated exposure to ODE or H2S or ODE+H2S induced oxidative stress and cytokine production, decreased tight junction protein occludin and cytoskeletal protein ezrin expression, disrupted epithelial integrity and resulted in increased Klebsiella pneumoniae invasion. RTA-408 (pharmacological activator of Nrf2) activated Nrf2 by decreasing keap1 levels and reduced ODE+H2S-induced changes including reversing loss of barrier integrity, inflammatory cytokine production and microbial invasion in PCLS but not in NHBE cell model. We conclude that Nrf2 activation has a partial protective function against ODE and H2S.
Collapse
Affiliation(s)
- Denusha Shrestha
- Department of Biomedical Sciences, Iowa State University, Ames, IA, United States
| | - Nyzil Massey
- Department of Biomedical Sciences, Iowa State University, Ames, IA, United States
| | - Sanjana Mahadev Bhat
- Department of Biomedical Sciences, Iowa State University, Ames, IA, United States
- Immunobiology Interdepartmental Graduate Program, Iowa State University, Ames, IA, United States
| | - Tomislav Jelesijević
- Department of Comparative Biomedical Sciences, Louisiana State University, Baton Rouge, LA, United States
| | - Orhan Sahin
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA, United States
| | - Qijing Zhang
- Veterinary Microbiology and Preventive Medicine, Iowa State University, Ames, IA, United States
| | - Kristina L. Bailey
- Department of Internal Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Jill A. Poole
- Department of Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Chandrashekhar Charavaryamath
- Department of Biomedical Sciences, Iowa State University, Ames, IA, United States
- *Correspondence: Chandrashekhar Charavaryamath,
| |
Collapse
|
24
|
Beyi AF, Mochel JP, Magnin G, Hawbecker T, Slagel C, Dewell G, Dewell R, Sahin O, Coetzee JF, Zhang Q, Plummer PJ. Comparisons of plasma and fecal pharmacokinetics of danofloxacin and enrofloxacin in healthy and Mannheimia haemolytica infected calves. Sci Rep 2022; 12:5107. [PMID: 35332195 PMCID: PMC8948211 DOI: 10.1038/s41598-022-08945-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 03/14/2022] [Indexed: 01/02/2023] Open
Abstract
Danofloxacin and enrofloxacin are fluoroquinolones (FQs) used to treat and control bovine respiratory disease (BRD) complex. While low toxicity, high bactericidal activity, and availability in single and multiple dosing regimens make them preferable, the increasing incidence of FQ-resistance in foodborne pathogens and effects on gut microbiota necessitate evaluating their pharmacokinetics (PKs). The objective of this study was to determine the exposure level of gut microbiota to subcutaneously administered FQs and compare their PKs between plasma and feces in healthy and Mannheimia haemolytica infected calves. A single dose of danofloxacin (8 mg/kg), low dose (7.5 mg/kg), or high dose (12.5 mg/kg) of enrofloxacin was administered to calves. Blood and feces were collected from calves under experimental conditions over 48 h, and FQ concentrations were measured using Ultra High-Pressure Liquid Chromatography. While moderate BRD signs were exhibited in most calves in the infected cohorts, the plasma PKs were similar between healthy and sick calves. However, the fecal danofloxacin concentration was lower in the BRD group (area under concentration–time curve [AUCinf], BRD median = 2627, healthy median = 2941 h*μg/mL, adj.P = 0.005). The dose normalized plasma and fecal danofloxacin concentrations were higher than those of enrofloxacin and its metabolite ciprofloxacin. Further, FQs had several fold higher overall concentrations in feces than in plasma in both groups. In conclusion, parenterally administered FQs expose gut microbiota to high concentrations of the antibiotics.
Collapse
Affiliation(s)
- Ashenafi Feyisa Beyi
- Department of Veterinary Microbiology and Preventative Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, 50011, USA.,National Institute of Antimicrobial Resistance Research and Education, Iowa State University, Ames, IA, 50010, USA
| | - Jonathan P Mochel
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, 50011, USA.,National Institute of Antimicrobial Resistance Research and Education, Iowa State University, Ames, IA, 50010, USA
| | - Géraldine Magnin
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS, 66502, USA
| | - Tyler Hawbecker
- College of Veterinary Medicine, Iowa State University, Ames, IA, 50011, USA
| | - Clare Slagel
- College of Veterinary Medicine, Iowa State University, Ames, IA, 50011, USA
| | - Grant Dewell
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, 50011, USA
| | - Renee Dewell
- Center for Food Security/Public Health, College of Veterinary Medicine, Iowa State University, Ames, IA, 50011, USA
| | - Orhan Sahin
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, 50011, USA.,National Institute of Antimicrobial Resistance Research and Education, Iowa State University, Ames, IA, 50010, USA
| | - Johann F Coetzee
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS, 66502, USA.,Nanotechnology Innovation Center of Kansas State (NICKS) and Institute of Computational Comparative Medicine, Kansas State University, Manhattan, KS, 66502, USA
| | - Qijing Zhang
- Department of Veterinary Microbiology and Preventative Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, 50011, USA.,National Institute of Antimicrobial Resistance Research and Education, Iowa State University, Ames, IA, 50010, USA
| | - Paul J Plummer
- Department of Veterinary Microbiology and Preventative Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, 50011, USA. .,Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, 50011, USA. .,National Institute of Antimicrobial Resistance Research and Education, Iowa State University, Ames, IA, 50010, USA.
| |
Collapse
|
25
|
Ozdemir S, Sahin O, Acar Z, Demir GZ, Ermin E, Aydin A. Prediction of Pregnancy Complications With Maternal Biochemical Markers Used in Down Syndrome Screening. Cureus 2022; 14:e23115. [PMID: 35425672 PMCID: PMC9003626 DOI: 10.7759/cureus.23115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/10/2022] [Indexed: 11/05/2022] Open
|
26
|
Kalafat E, Prasad S, Birol P, Tekin AB, Kunt A, Di Fabrizio C, Alatas C, Celik E, Bagci H, Binder J, Le Doare K, Magee LA, Mutlu MA, Yassa M, Tug N, Sahin O, Krokos P, O’brien P, von Dadelszen P, Palmrich P, Papaioannou G, Ayaz R, Ladhani SN, Kalantaridou S, Mihmanli V, Khalil A. An internally validated prediction model for critical COVID-19 infection and intensive care unit admission in symptomatic pregnant women. Am J Obstet Gynecol 2022; 226:403.e1-403.e13. [PMID: 34582796 PMCID: PMC8463298 DOI: 10.1016/j.ajog.2021.09.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 09/12/2021] [Accepted: 09/21/2021] [Indexed: 12/15/2022]
Abstract
Background Pregnant women are at an increased risk of mortality and morbidity owing to COVID-19. Many studies have reported on the association of COVID-19 with pregnancy-specific adverse outcomes, but prediction models utilizing large cohorts of pregnant women are still lacking for estimating the risk of maternal morbidity and other adverse events. Objective The main aim of this study was to develop a prediction model to quantify the risk of progression to critical COVID-19 and intensive care unit admission in pregnant women with symptomatic infection. Study Design This was a multicenter retrospective cohort study including 8 hospitals from 4 countries (the United Kingdom, Austria, Greece, and Turkey). The data extraction was from February 2020 until May 2021. Included were consecutive pregnant and early postpartum women (within 10 days of birth); reverse transcriptase polymerase chain reaction confirmed SARS-CoV-2 infection. The primary outcome was progression to critical illness requiring intensive care. The secondary outcomes included maternal death, preeclampsia, and stillbirth. The association between the primary outcome and 12 candidate predictors having a known association with severe COVID-19 in pregnancy was analyzed with log-binomial mixed-effects regression and reported as adjusted risk ratios. All the potential predictors were evaluated in 1 model and only the baseline factors in another. The predictive accuracy was assessed by the area under the receiver operating characteristic curves. Results Of the 793 pregnant women who were positive for SARS-CoV-2 and were symptomatic, 44 (5.5%) were admitted to intensive care, of whom 10 died (1.3%). The ‘mini-COvid Maternal Intensive Therapy’ model included the following demographic and clinical variables available at disease onset: maternal age (adjusted risk ratio, 1.45; 95% confidence interval, 1.07–1.95; P=.015); body mass index (adjusted risk ratio, 1.34; 95% confidence interval, 1.06–1.66; P=.010); and diagnosis in the third trimester of pregnancy (adjusted risk ratio, 3.64; 95% confidence interval, 1.78–8.46; P=.001). The optimism-adjusted area under the receiver operating characteristic curve was 0.73. The ‘full-COvid Maternal Intensive Therapy’ model included body mass index (adjusted risk ratio, 1.39; 95% confidence interval, 1.07–1.95; P=.015), lower respiratory symptoms (adjusted risk ratio, 5.11; 95% confidence interval, 1.81–21.4; P=.007), neutrophil to lymphocyte ratio (adjusted risk ratio, 1.62; 95% confidence interval, 1.36–1.89; P<.001); and serum C-reactive protein (adjusted risk ratio, 1.30; 95% confidence interval, 1.15–1.44; P<.001), with an optimism-adjusted area under the receiver operating characteristic curve of 0.85. Neither model showed signs of a poor fit. Categorization as high-risk by either model was associated with a shorter diagnosis to intensive care unit admission interval (log-rank test P<.001, both), higher maternal death (5.2% vs 0.2%; P<.001), and preeclampsia (5.7% vs 1.0%; P<.001). A spreadsheet calculator is available for risk estimation. Conclusion At presentation with symptomatic COVID-19, pregnant and recently postpartum women can be stratified into high- and low-risk for progression to critical disease, even where resources are limited. This can support the nature and place of care. These models also highlight the independent risk for severe disease associated with obesity and should further emphasize that even in the absence of other comorbidities, vaccination is particularly important for these women. Finally, the model also provides useful information for policy makers when prioritizing national vaccination programs to quickly protect those at the highest risk of critical and fatal COVID-19.
Collapse
|
27
|
Koroglu A, Kaya M, Sahin O. The relationship of psychological status and sociodemographic factors with bruxism among undergraduate dental students: A national survey. Niger J Clin Pract 2022; 25:944-950. [DOI: 10.4103/njcp.njcp_1980_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
28
|
Sitthicharoenchai P, Burrough ER, Arruda BL, Sahin O, Dos Santos JG, Magstadt DR, Piñeyro PE, Schwartz KJ, Rahe MC. Streptococcus gallolyticus and Bacterial Endocarditis in Swine, United States, 2015-2020. Emerg Infect Dis 2022; 28:192-195. [PMID: 34932445 PMCID: PMC8714216 DOI: 10.3201/eid2801.210998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
To evaluate trends in bacterial causes of valvular endocarditis in swine, we retrospectively analyzed 321 cases diagnosed at Iowa State University Veterinary Diagnostic Laboratory (Ames, IA, USA) during May 2015--April 2020. Streptococcus gallolyticus was the causative agent for 7.59% of cases. This emerging infection in swine could aid study of endocarditis in humans.
Collapse
|
29
|
Gokalp G, Nalbant T, Berksoy E, Bardak S, Demir G, Demir S, Sahin O, Hocaoglu N. Is hypoglycemia really observed in pediatric beta-blocker intoxications? A case-control study. Arch Pediatr 2021; 29:56-60. [PMID: 34848131 DOI: 10.1016/j.arcped.2021.10.006] [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: 02/17/2021] [Revised: 07/14/2021] [Accepted: 10/03/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Beta-blocker (BB) intoxications are common in both childhood and adulthood. In the case of poisoning, bradycardia, hypotension, ventricular dysrhythmias, mental status changes, seizures, hypoglycemia, and bronchospasm may occur. Effects on the cardiovascular system are commonly seen, but hypoglycemia is not frequently observed in clinical practice. In this study, we aimed to answer the question, "Is hypoglycemia more commonly observed in BB intoxications than in other intoxications?" METHOD This was a case-control study conducted in a pediatric emergency department of a university hospital. The case group (Group 1) consisted of cases with BB poisonings and the control group (Group 2) consisted of cases with selective serotonin receptor inhibitor (SSRI) poisonings. Data were obtained from patient files. We recorded the blood glucose levels (BGLs) of all patients on admission to the emergency department and at the 1-, 6-, and 24-h follow-up. The amounts of BBs received by the cases were compared with the specific toxic doses of each drug. The data obtained were analyzed using the Statistical Package for the Social Sciences 22 (SPSS.22) program. Mean and standard deviation for numerical values and frequency for categorical data are reported; at test, chi-square test, and ANOVA tests were used for the analysis. RESULTS The study comprised 40 patients (Group 1) and 40 controls (Group 2). The mean serum BGLs of patients in Group 1 at admission and at the 1-, 6-, and 24-h follow-up were 107.2 ± 46.3 mg/dl, 86.3 ± 20.1 mg/dl, 88.6 ± 28.4 mg/dl, and 86.5 ± 23.7 mg/dl, respectively. The mean values of Group 2 cases were 100 ± 39.5 mg/dl, 92.1 ± 30 mg/dl, 91±28 mg/dl, and 127.8 ± 60.7 mg/dl, respectively, at admission and at the 1-, 6-, and 24-h follow-up (p = 0.4, p < 0.001, p = 0.7, and p < 0.001, respectively). The mean BGLs of patients who were exposed to propranolol at admission and at the 1-, 6-, and 24-h follow-up were significantly lower than those of the patients who had taken different BBs in Group 1. No linear correlation was found between the percentage of exposure to BB toxic doses and BGLs. CONCLUSION Our study showed that the BGLs of patients receiving BBs could be lower, but they were not at a level that would have serious consequences. Nevertheless, the BGLs of all cases of intoxication should be monitored closely.
Collapse
Affiliation(s)
- Gamze Gokalp
- Izmir Katip Celebi University Faculty of Medicine: Izmir Katip Celebi Universitesi Tip Fakultesi, Turkey; Dokuz Eylül University: Dokuz Eylul Universitesi Institute of Health Servises, Medical Pharmacology Depatment, Toxicology Devision, Turkey.
| | - Tugce Nalbant
- Izmir Tepecik Training and Research Hospital: TC Saglik Bakanligi Izmir Il Saglik Mudurlugu Izmir, Saglik Bilimleri Universitesi Tepecik Egitim ve Arastirma Hastanesi, Turkey
| | - Emel Berksoy
- Izmir Tepecik Training and Research Hospital: TC Saglik Bakanligi Izmir Il Saglik Mudurlugu Izmir, Saglik Bilimleri Universitesi Tepecik Egitim ve Arastirma Hastanesi, Turkey
| | - Sefika Bardak
- Izmir Tepecik Egitim ve Arastirma Hastanesi: TC Saglik Bakanligi Izmir Il Saglik Mudurlugu Izmir Saglik, Bilimleri Universitesi Tepecik Egitim ve Arastirma Hastanesi, Turkey
| | - Gulsah Demir
- Izmir Tepecik Egitim ve Arastirma Hastanesi: TC Saglik Bakanligi Izmir Il Saglik Mudurlugu Izmir Saglik, Bilimleri Universitesi Tepecik Egitim ve Arastirma Hastanesi, Turkey
| | - Sule Demir
- Izmir Tepecik Egitim ve Arastirma Hastanesi: TC Saglik Bakanligi Izmir Il Saglik Mudurlugu Izmir Saglik, Bilimleri Universitesi Tepecik Egitim ve Arastirma Hastanesi, Turkey
| | - Orhan Sahin
- Dokuz Eylül University: Dokuz Eylul Universitesi Institute of Health Servises, Medical Pharmacology Depatment, Toxicology Devision, Turkey
| | - Nil Hocaoglu
- Dokuz Eylül University: Dokuz Eylul Universitesi Institute of Health Servises, Medical Pharmacology Depatment, Toxicology Devision, Turkey; Dokuz Eylul University: Dokuz Eylul Universitesi, Faculty of Medicine, Pharmacology Depatment, Medical Toxicology Devision, Turkey
| |
Collapse
|
30
|
Sahin O, Yildirmak T, Karacalar S, Aydın E, Ciftci MA, Bagci H, Yildirim S, Emeklioglu C, Balci BG, Genc S, Cingillioglu B, Mihmanli V, Khalil A, Kalafat E. Short-term outcomes of pregnant women with convalescent COVID-19 and factors associated with false-negative polymerase chain reaction test: A prospective cohort study. Int J Clin Pract 2021; 75:e14670. [PMID: 34342119 PMCID: PMC8420588 DOI: 10.1111/ijcp.14670] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 02/14/2021] [Accepted: 07/26/2021] [Indexed: 12/23/2022] Open
Abstract
AIM To evaluate the clinical factors associated with false-negative RT-PCR results and to report the outcome of a cohort of pregnant women with COVID-19. METHODS This cohort study was conducted in a tertiary referral pandemic hospital and included 56 pregnant women. A study including pregnant women with either a laboratory or clinical diagnosis for COVID-19 were included in the study. The primary outcome was clinical factors associated with false-negative RT-PCR results defined as a positive immunoglobulin M assessed by rapid testing in clinically diagnosed patients. Clinical outcomes of laboratory diagnosed patients were also reported. RESULTS In total, 56 women with either RT-PCR or clinical COVID-19 diagnosis were included in the study. Forty-three women either had RT-PCR positivity or IgM positivity. The clinical outcome of these pregnancies was as follows: mean maternal age 27.7, immunoglobulin M positive patients 76.7%, RT-PCR positive patients 55.8%, maternal comorbidities 11.5%, complications in patients below 20 weeks 34.8%, complications in patients above 20 weeks 65.1%, elevated CRP 83.7%, lymphopenia 30.2%, time from hospital admission to final follow-up days 37 and stillbirth 8.3%. The proportion of women who tested positive for SARS-CoV-2 immunoglobulin M was 100% in the RT-PCR positive group and 56.5% in the clinical diagnosis group (P = .002). The symptom onset to RT-PCR testing interval longer than a week (risk ratio: 2.72, 95% CI: 1.14-5.40, P = .003) and presence of dyspnoea (risk ratio: 0.38, 95% CI: 0.14-0.89, P = .035) were associated with false-negative RT-PCR tests. The area under the curve of these parameters predicting false-negative RT-PCR was 0.73 (95% CI: 0.57-0.89). CONCLUSIONS Symptomatic women with a negative RT-PCR should not be dismissed as potential COVID-19 patients, especially in the presence of prolonged symptom onset-test interval and in women without dyspnoea.
Collapse
Affiliation(s)
- Orhan Sahin
- Department of Obstetrics and GynecologyProf. Dr. Cemil Tascioglu City HospitalIstanbulTurkey
| | - Taner Yildirmak
- Department of Infectious Diseases and Clinical MicrobiologyProf. Dr. Cemil Tascioglu City HospitalIstanbulTurkey
| | - Serap Karacalar
- Department of Anesthesiology and ReanimationProf. Dr. Cemil Tascioglu City HospitalIstanbulTurkey
| | - Emine Aydın
- Department of Obstetrics and GynecologyProf. Dr. Cemil Tascioglu City HospitalIstanbulTurkey
| | - Mehmet Ali Ciftci
- Department of Obstetrics and GynecologyProf. Dr. Cemil Tascioglu City HospitalIstanbulTurkey
| | - Helin Bagci
- Department of Obstetrics and GynecologyProf. Dr. Cemil Tascioglu City HospitalIstanbulTurkey
| | - Sukran Yildirim
- Department of NeonatologyProf. Dr. Cemil Tascioglu City HospitalIstanbulTurkey
| | - Cagdas Emeklioglu
- Department of Obstetrics and GynecologyProf. Dr. Cemil Tascioglu City HospitalIstanbulTurkey
| | - Burcu Gulsah Balci
- Department of Obstetrics and GynecologyProf. Dr. Cemil Tascioglu City HospitalIstanbulTurkey
| | - Simten Genc
- Department of Obstetrics and GynecologyProf. Dr. Cemil Tascioglu City HospitalIstanbulTurkey
| | - Basak Cingillioglu
- Department of Obstetrics and GynecologyProf. Dr. Cemil Tascioglu City HospitalIstanbulTurkey
| | - Veli Mihmanli
- Department of Obstetrics and GynecologyProf. Dr. Cemil Tascioglu City HospitalIstanbulTurkey
| | - Asma Khalil
- Fetal Medicine UnitSt. George’s HospitalSt. George’s University of LondonUK
| | - Erkan Kalafat
- Department of Obstetrics and GynecologyFaculty of MedicineKoc UniversityIstanbulTurkey
- Department of StatisticsFaculty of Arts and SciencesMiddle East Technical UniversityAnkaraTurkey
| |
Collapse
|
31
|
Aydin F, Abay S, Kayman T, Karakaya E, Mustak HK, Mustak IB, Bilgen N, Goncuoglu M, Duzler A, Guran O, Sahin O, Saticioglu IB. Campylobacter anatolicus sp. nov., a novel member of the genus Campylobacter isolated from feces of Anatolian Ground Squirrel (Spermophilus xanthoprymnus) in Turkey. Syst Appl Microbiol 2021; 44:126265. [PMID: 34624709 DOI: 10.1016/j.syapm.2021.126265] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 06/07/2021] [Revised: 09/10/2021] [Accepted: 09/16/2021] [Indexed: 10/20/2022]
Abstract
Seventy-four Gram-negative, motile, slightly curved rod-shaped, microaerophilic, oxidase-positive and catalase-negative isolates, recovered from fecal samples of the Anatolian ground squirrel (Spermophilus xanthoprymnus) in Kayseri, Turkey, were subjected to a polyphasic taxonomic study. Results of a genus-specific PCR indicated that all isolates belonged to the genus Campylobacter. 16S rRNA gene sequence analyses revealed the closest match as Campylobacter curvus DSM 6644T with identity levels of 96.41-96.70%. Based on the 16S rRNA gene phylogeny of the 74 isolates, six isolates (faydin-G24, faydin-G52, faydin-G105, faydin-G114, faydin-G129 and faydin-G140T) were chosen as representatives for further characterization. The overall genome relatedness indices for the strain faydin-G140T, compared to the most closely related type strain C. curvus ATCC 35224T, were calculated as 15.2%, 72.5%, and 83.7% for digital DNA-DNA hybridization (dDDH), and average nucleotide identity (ANIb and ANIm), respectively. The G+C content and genome size of the strains ranged between 35.2-35.4 mol% and 1.7-1.8 Mb, respectively. Based on data obtained from the polyphasic taxonomy approach, including phenotypic characterization as well as genomic and chemotaxonomic analyses, these strains are concluded to represent a novel species, for which the name Campylobacter anatolicus sp. nov. is proposed with faydin-G140T as the type strain (=DSM 112311T = LMG 32238T).
Collapse
Affiliation(s)
- Fuat Aydin
- Department of Microbiology, Faculty of Veterinary Medicine, Erciyes University, 38280 Kayseri, Turkey
| | - Secil Abay
- Department of Microbiology, Faculty of Veterinary Medicine, Erciyes University, 38280 Kayseri, Turkey
| | - Tuba Kayman
- Medical Microbiology Clinic, Şişli Hamidiye Etfal Training and Research Hospital, University of Health Sciences, 34371 Istanbul, Turkey
| | - Emre Karakaya
- Department of Microbiology, Faculty of Veterinary Medicine, Erciyes University, 38280 Kayseri, Turkey
| | - Hamit Kaan Mustak
- Department of Microbiology, Faculty of Veterinary Medicine, Ankara University, 06110 Ankara, Turkey
| | - Inci Basak Mustak
- Department of Microbiology, Faculty of Veterinary Medicine, Ankara University, 06110 Ankara, Turkey
| | - Nuket Bilgen
- Department of Genetics, Faculty of Veterinary Medicine, Ankara University, 06110 Ankara, Turkey
| | - Muammer Goncuoglu
- Department of Food Hygiene and Technology, Faculty of Veterinary Medicine, Ankara University, 06110 Ankara, Turkey
| | - Ayhan Duzler
- Department of Anatomy, Faculty of Veterinary Medicine, Erciyes University, 38280 Kayseri, Turkey
| | - Ozgur Guran
- Faculty of Veterinary Medicine, Ankara University, 06110 Ankara, Turkey
| | - Orhan Sahin
- Department of Veterinary Diagnostic & Production Animal Medicine, College of Veterinary Medicine, Iowa State University, 50011 Ames, Iowa, United States of America
| | - Izzet Burcin Saticioglu
- Department of Aquatic Animal Diseases, Faculty of Veterinary Medicine, Erciyes University, 38280 Kayseri, Turkey
| |
Collapse
|
32
|
Yaeger M, Mochel JP, Wu Z, Plummer P, Sahin O, Smith J, Ocal M, Beyi A, Xu C, Zhang Q, Griffith RW. Pharmacokinetics of tulathromycin in pregnant ewes (Ovis aries) challenged with Campylobacter jejuni. PLoS One 2021; 16:e0256862. [PMID: 34449832 PMCID: PMC8396736 DOI: 10.1371/journal.pone.0256862] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 08/17/2021] [Indexed: 11/19/2022] Open
Abstract
The purpose of this study was to evaluate the pharmacokinetics of tulathromycin in the plasma and maternal and fetal tissues of pregnant ewes when administered within 24 hours of a single, IV Campylobacter jejuni (C. jejuni) challenge. Twelve, pregnant ewes between 72-92 days of gestation were challenged IV with C. jejuni IA3902 and then treated with 1.1 ml/45.36 kg of tulathromycin subcutaneously 18 hours post-challenge. Ewes were bled at predetermined time points and euthanized either at a predetermined time point or following the observation of vaginal bleeding or abortion. Following euthanasia, tissues were collected for bacterial culture, pharmacokinetics and histologic examination. The maximum (geometric) mean tulathromycin plasma concentration was estimated at 0.302 μg/mL, with a peak level observed at around 1.2 hours. The apparent systemic clearance of tulathromycin was estimated at 16.6 L/h (or 0.28 L/kg/h) with an elimination half-life estimated at approximately 22 hours. The mean tissue concentrations were highest in the uterus (2.464 μg/g) and placentome (0.484 μg/g), and were lowest in fetal liver (0.11 μg/g) and fetal lung (0.03 μg/g). Compared to previous reports, results of this study demonstrate that prior IV administration of C. jejuni appeared to substantially alter the pharmacokinetics of tulathromycin, reducing both the peak plasma concentrations and elimination half-life. However, additional controlled trials are required to confirm those observations.
Collapse
Affiliation(s)
- Michael Yaeger
- Department of Veterinary Pathology, College of Veterinary Medicine, Iowa State University, Ames, Iowa, United States of America
- * E-mail: (JPM); (MY)
| | - Jonathan P. Mochel
- Department of Veterinary Diagnostic & Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, United States of America
- Department of Biomedical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA, United States of America
- * E-mail: (JPM); (MY)
| | - Zuowei Wu
- Department of Veterinary Microbiology and Preventative Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States of America
| | - Paul Plummer
- Department of Veterinary Diagnostic & Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, United States of America
- Department of Veterinary Microbiology and Preventative Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States of America
| | - Orhan Sahin
- Department of Veterinary Diagnostic & Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, United States of America
| | - Joseph Smith
- Department of Biomedical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA, United States of America
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, TN, United States of America
| | - Melda Ocal
- Department of Veterinary Microbiology and Preventative Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States of America
| | - Ashenafi Beyi
- Department of Veterinary Microbiology and Preventative Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States of America
| | - Changyun Xu
- Department of Veterinary Microbiology and Preventative Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States of America
| | - Qijing Zhang
- Department of Veterinary Microbiology and Preventative Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States of America
| | - Ronald W. Griffith
- Department of Veterinary Microbiology and Preventative Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States of America
| |
Collapse
|
33
|
Yaeger MJ, Sahin O, Plummer PJ, Wu Z, Stasko JA, Zhang Q. The pathology of natural and experimentally induced Campylobacter jejuni abortion in sheep. J Vet Diagn Invest 2021; 33:1096-1105. [PMID: 34311616 DOI: 10.1177/10406387211033293] [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] [Indexed: 11/16/2022] Open
Abstract
We describe here the gross and microscopic lesions in 18 experimentally induced and 120 natural Campylobacter abortions. In natural Campylobacter abortions, gross lesions were reported infrequently; placentitis was recorded in 6% and hepatic lesions in 4% of our field cases. Placentitis was the microscopic lesion identified most consistently in natural abortions (93%) and was often observed in association with abundant bacterial colonies in chorionic villi (54%) and less often with placental vasculitis (13%). In natural abortions, suppurative fetal pneumonia (48%), necrosuppurative hepatitis (16%), and purulent meningitis (7%) were also observed. The better-preserved specimens from experimentally induced abortions were utilized to define placental changes more precisely. Placentitis was identified in all 18 experimentally induced abortions and was observed most consistently in the chorionic villus stroma (100%), often accompanied by suppurative surface exudate (89%). An inflammatory infiltrate was less commonly identified in the cotyledonary hilus (39%) and intercotyledonary placenta (22%). Bacteria were visualized in H&E-stained sections in 89% of placentas from experimentally infected ewes, primarily as well-demarcated bacterial colonies within subtrophoblastic, sinusoidal capillaries (89%), in the cotyledonary villus stroma (89%), and within the cytoplasm of trophoblasts (22%). Transmission electron microscopy and immunohistochemistry confirmed that the vast majority of the well-demarcated bacterial colonies characteristic of Campylobacter abortion were within subtrophoblastic sinusoidal capillaries. The most characteristic microscopic lesions identified in cases of Campylobacter abortion in sheep were placentitis with placental bacterial colonies, placental vasculitis, and fetal pneumonia.
Collapse
Affiliation(s)
- Michael J Yaeger
- Departments of Veterinary Pathology, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Orhan Sahin
- Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Paul J Plummer
- Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Zuowei Wu
- Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Judith A Stasko
- U.S. Department of Agriculture, Agricultural Research Service, Ames, IA, USA
| | - Qijing Zhang
- Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| |
Collapse
|
34
|
Wymore Brand M, Sahin O, Hostetter JM, Trachsel J, Zhang Q, Wannemuehler MJ. Campylobacter jejuni persistently colonizes gnotobiotic altered Schaedler flora C3H/HeN mice and induces mild colitis. FEMS Microbiol Lett 2021; 367:5937419. [PMID: 33098301 DOI: 10.1093/femsle/fnaa163] [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: 06/21/2020] [Accepted: 10/05/2020] [Indexed: 11/13/2022] Open
Abstract
Campylobacter jejuni is a major cause of food-borne human bacterial gastroenteritis but animal models for C. jejuni mediated disease remain limited because C. jejuni poorly colonizes immunocompetent, conventionally-reared (Conv-R) mice. Thus, a reliable rodent model (i.e. persistent colonization) is desirable in order to evaluate C. jejuni-mediated gastrointestinal disease and mechanisms of pathogenicity. As the nature and complexity of the microbiota likely impacts colonization resistance for C. jejuni, Conv-R and gnotobiotic C3H/HeN mice were used to evaluate the persistence of C. jejuni colonization and development of disease. A total of four C. jejuni isolates readily and persistently colonized ASF mice and induced mild mucosal inflammation in the proximal colon, but C. jejuni did not stably colonize nor induce lesions in Conv-R mice. This suggests that the pathogenesis of C. jejuni is influenced by the microbiota, and that ASF mice offer a reproducible model to study the influence of the microbiota on the ability of C. jejuni to colonize the gut and to mediate gastroenteritis.
Collapse
Affiliation(s)
- Meghan Wymore Brand
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, 1800 Christensen Drive, Ames, IA 50011, USA
| | - Orhan Sahin
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, 1800 Christensen Drive, Ames, IA 50011, USA
| | - Jesse M Hostetter
- Department of Veterinary Pathology, College of Veterinary Medicine, University of Georgia, 501 D. W. Brooks Drive, Athens, GA 30602, USA
| | - Julian Trachsel
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, 1800 Christensen Drive, Ames, IA 50011, USA
| | - Qijing Zhang
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, 1800 Christensen Drive, Ames, IA 50011, USA
| | - Michael J Wannemuehler
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, 1800 Christensen Drive, Ames, IA 50011, USA
| |
Collapse
|
35
|
Adiguzel MC, Goulart DB, Wu Z, Pang J, Cengiz S, Zhang Q, Sahin O. Distribution of CRISPR Types in Fluoroquinolone-Resistant Campylobacter jejuni Isolates. Pathogens 2021; 10:345. [PMID: 33809410 PMCID: PMC8000906 DOI: 10.3390/pathogens10030345] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 03/10/2021] [Accepted: 03/13/2021] [Indexed: 12/20/2022] Open
Abstract
To aid development of phage therapy against Campylobacter, we investigated the distribution of the clustered regularly interspaced short palindromic repeats (CRISPR) systems in fluoroquinolone (FQ)-resistant Campylobacter jejuni. A total of 100 FQ-resistant C. jejuni strains from different sources were analyzed by PCR and DNA sequencing to determine resistance-conferring mutation in the gyrA gene and the presence of various CRISPR systems. All but one isolate harbored 1-5 point mutations in gyrA, and the most common mutation was the Thr86Ile change. Ninety-five isolates were positive with the CRISPR PCR, and spacer sequences were found in 86 of them. Among the 292 spacer sequences identified in this study, 204 shared 93-100% nucleotide homology to Campylobacter phage D10, 44 showed 100% homology to Campylobacter phage CP39, and 3 had 100% homology with Campylobacter phage CJIE4-5. The remaining 41 spacer sequences did not match with any phages in the database. Based on the results, it was inferred that the FQ-resistant C. jejuni isolates analyzed in this study were potentially resistant to Campylobacter phages D10, CP39, and CJIE4-5 as well as some unidentified phages. These phages should be excluded from cocktails of phages that may be utilized to treat FQ-resistant Campylobacter.
Collapse
Affiliation(s)
- Mehmet Cemal Adiguzel
- Department of Microbiology, College of Veterinary Medicine, Ataturk University, Erzurum 25240, Turkey; (M.C.A.); (S.C.)
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA; (D.B.G.); (Z.W.); (J.P.); (Q.Z.)
| | - Debora Brito Goulart
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA; (D.B.G.); (Z.W.); (J.P.); (Q.Z.)
| | - Zuowei Wu
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA; (D.B.G.); (Z.W.); (J.P.); (Q.Z.)
| | - Jinji Pang
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA; (D.B.G.); (Z.W.); (J.P.); (Q.Z.)
| | - Seyda Cengiz
- Department of Microbiology, College of Veterinary Medicine, Ataturk University, Erzurum 25240, Turkey; (M.C.A.); (S.C.)
| | - Qijing Zhang
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA; (D.B.G.); (Z.W.); (J.P.); (Q.Z.)
| | - Orhan Sahin
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
| |
Collapse
|
36
|
Tyson GH, Ceric O, Guag J, Nemser S, Borenstein S, Slavic D, Lippert S, McDowell R, Krishnamurthy A, Korosec S, Friday C, Pople N, Saab ME, Fairbrother JH, Janelle I, McMillan D, Bommineni YR, Simon D, Mohan S, Sanchez S, Phillips A, Bartlett P, Naikare H, Watson C, Sahin O, Stinman C, Wang L, Maddox C, DeShambo V, Hendrix K, Lubelski D, Burklund A, Lubbers B, Reed D, Jenkins T, Erol E, Patel M, Locke S, Fortner J, Peak L, Balasuriya U, Mani R, Kettler N, Olsen K, Zhang S, Shen Z, Landinez MP, Thornton JK, Thachil A, Byrd M, Jacob M, Krogh D, Webb B, Schaan L, Patil A, Dasgupta S, Mann S, Goodman LB, Franklin-Guild RJ, Anderson RR, Mitchell PK, Cronk BD, Aprea M, Cui J, Jurkovic D, Prarat M, Zhang Y, Shiplett K, Campos DD, Rubio JVB, Ramanchandran A, Talent S, Tewari D, Thirumalapura N, Kelly D, Barnhart D, Hall L, Rankin S, Dietrich J, Cole S, Scaria J, Antony L, Lawhon SD, Wu J, McCoy C, Dietz K, Wolking R, Alexander T, Burbick C, Reimschuessel R. Genomics accurately predicts antimicrobial resistance in Staphylococcus pseudintermedius collected as part of Vet-LIRN resistance monitoring. Vet Microbiol 2021; 254:109006. [PMID: 33581494 DOI: 10.1016/j.vetmic.2021.109006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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] [Received: 09/16/2020] [Accepted: 01/28/2021] [Indexed: 02/07/2023]
Abstract
Whole-genome sequencing (WGS) has changed our understanding of bacterial pathogens, aiding outbreak investigations and advancing our knowledge of their genetic features. However, there has been limited use of genomics to understand antimicrobial resistance of veterinary pathogens, which would help identify emerging resistance mechanisms and track their spread. The objectives of this study were to evaluate the correlation between resistance genotypes and phenotypes for Staphylococcus pseudintermedius, a major pathogen of companion animals, by comparing broth microdilution antimicrobial susceptibility testing and WGS. From 2017-2019, we conducted antimicrobial susceptibility testing and WGS on S. pseudintermedius isolates collected from dogs in the United States as a part of the Veterinary Laboratory Investigation and Response Network (Vet-LIRN) antimicrobial resistance monitoring program. Across thirteen antimicrobials in nine classes, resistance genotypes correlated with clinical resistance phenotypes 98.4 % of the time among a collection of 592 isolates. Our findings represent isolates from diverse lineages based on phylogenetic analyses, and these strong correlations are comparable to those from studies of several human pathogens such as Staphylococcus aureus and Salmonella enterica. We uncovered some important findings, including that 32.3 % of isolates had the mecA gene, which correlated with oxacillin resistance 97.0 % of the time. We also identified a novel rpoB mutation likely encoding rifampin resistance. These results show the value in using WGS to assess antimicrobial resistance in veterinary pathogens and to reveal putative new mechanisms of resistance.
Collapse
Affiliation(s)
- Gregory H Tyson
- U.S. Food and Drug Administration, Center for Veterinary Medicine, Office of Research, United States.
| | - Olgica Ceric
- U.S. Food and Drug Administration, Center for Veterinary Medicine, Office of Research, United States
| | - Jake Guag
- U.S. Food and Drug Administration, Center for Veterinary Medicine, Office of Research, United States
| | - Sarah Nemser
- U.S. Food and Drug Administration, Center for Veterinary Medicine, Office of Research, United States
| | - Stacey Borenstein
- U.S. Food and Drug Administration, Center for Veterinary Medicine, Office of Research, United States
| | - Durda Slavic
- University of Guelph - Animal Health Laboratory, Canada
| | - Sarah Lippert
- University of Guelph - Animal Health Laboratory, Canada
| | | | | | - Shannon Korosec
- Manitoba Agriculture and Resource Development - Veterinary Diagnostic Services, Canada
| | - Cheryl Friday
- Manitoba Agriculture and Resource Development - Veterinary Diagnostic Services, Canada
| | - Neil Pople
- Manitoba Agriculture and Resource Development - Veterinary Diagnostic Services, Canada
| | - Matthew E Saab
- Diagnostic Services, Atlantic Veterinary College, University of Prince Edward Island, Canada
| | | | - Isabelle Janelle
- Complexe de diagnostic et d'épidémiosurveillance vétérinaires du Québec, Canada
| | - Deanna McMillan
- University of Saskatchewan - Prairie Diagnostic Services Inc, Canada
| | | | - David Simon
- Bronson Animal Disease Diagnostic Laboratory, United States
| | - Shipra Mohan
- Bronson Animal Disease Diagnostic Laboratory, United States
| | - Susan Sanchez
- Athens Veterinary Diagnostic Laboratory, College of Veterinary Medicine, The University of Georgia, United States
| | - Ashley Phillips
- Athens Veterinary Diagnostic Laboratory, College of Veterinary Medicine, The University of Georgia, United States
| | - Paula Bartlett
- Athens Veterinary Diagnostic Laboratory, College of Veterinary Medicine, The University of Georgia, United States
| | - Hemant Naikare
- University of Georgia - Tifton Veterinary Diagnostic & Investigational Laboratory, United States
| | - Cynthia Watson
- University of Georgia - Tifton Veterinary Diagnostic & Investigational Laboratory, United States
| | | | | | - Leyi Wang
- University of Illinois Veterinary Diagnostic Laboratory - College of Veterinary Medicine, United States
| | - Carol Maddox
- University of Illinois Veterinary Diagnostic Laboratory - College of Veterinary Medicine, United States
| | - Vanessa DeShambo
- University of Illinois Veterinary Diagnostic Laboratory - College of Veterinary Medicine, United States
| | | | - Debra Lubelski
- Indiana Animal Disease Diagnostic Laboratory, United States
| | | | | | - Debbie Reed
- Murray State University Breathitt Veterinary Center, United States
| | - Tracie Jenkins
- Murray State University Breathitt Veterinary Center, United States
| | | | | | | | | | - Laura Peak
- Louisiana State University, United States
| | | | | | | | - Karen Olsen
- University of Minnesota Veterinary Diagnostic Lab, United States
| | - Shuping Zhang
- University of Missouri Veterinary Medical Diagnostic Laboratory, United States
| | - Zhenyu Shen
- University of Missouri Veterinary Medical Diagnostic Laboratory, United States
| | - Martha Pulido Landinez
- Mississippi State University, Veterinary Research and Diagnostic Lab System, United States
| | - Jay Kay Thornton
- Mississippi State University, Veterinary Research and Diagnostic Lab System, United States
| | - Anil Thachil
- North Carolina Veterinary Diagnostic Lab System, United States
| | | | - Megan Jacob
- North Carolina State University, United States
| | - Darlene Krogh
- North Dakota State University Veterinary Diagnostic Laboratory, United States
| | - Brett Webb
- North Dakota State University Veterinary Diagnostic Laboratory, United States
| | - Lynn Schaan
- North Dakota State University Veterinary Diagnostic Laboratory, United States
| | - Amar Patil
- New Jersey Department of Agriculture, Animal Health Diagnostic Laboratory, United States
| | - Sarmila Dasgupta
- New Jersey Department of Agriculture, Animal Health Diagnostic Laboratory, United States
| | - Shannon Mann
- New Jersey Department of Agriculture, Animal Health Diagnostic Laboratory, United States
| | - Laura B Goodman
- Cornell University, College of Veterinary Medicine, United States
| | | | - Renee R Anderson
- Cornell University, College of Veterinary Medicine, United States
| | | | - Brittany D Cronk
- Cornell University, College of Veterinary Medicine, United States
| | - Missy Aprea
- Cornell University, College of Veterinary Medicine, United States
| | - Jing Cui
- Ohio Animal Disease Diagnostic Lab, United States
| | | | | | - Yan Zhang
- Ohio Animal Disease Diagnostic Lab, United States
| | | | - Dubra Diaz Campos
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, United States
| | - Joany Van Balen Rubio
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, United States
| | - Akhilesh Ramanchandran
- Oklahoma Animal Disease Diagnostic Laboraotry, College of Veterinary Medicine, Oklahoma State University, United States
| | - Scott Talent
- Oklahoma Animal Disease Diagnostic Laboraotry, College of Veterinary Medicine, Oklahoma State University, United States
| | - Deepanker Tewari
- PA Veterinary Laboratory, Pennsylvania Department of Agriculture, United States
| | | | - Donna Kelly
- University of Pennsylvania, New Bolton Center, United States
| | - Denise Barnhart
- University of Pennsylvania, New Bolton Center, United States
| | - Lacey Hall
- University of Pennsylvania, New Bolton Center, United States
| | - Shelley Rankin
- University of Pennsylvania, Ryan Veterinary Hospital, United States
| | - Jaclyn Dietrich
- University of Pennsylvania, Ryan Veterinary Hospital, United States
| | - Stephen Cole
- University of Pennsylvania, Ryan Veterinary Hospital, United States
| | - Joy Scaria
- Animal Disease Research and Diagnostic Laboratory, South Dakota State University, United States
| | - Linto Antony
- Animal Disease Research and Diagnostic Laboratory, South Dakota State University, United States
| | - Sara D Lawhon
- Texas A&M University, College of Veterinary Medicine & Biomedical Sciences, Department of Veterinary Pathobiology, United States
| | - Jing Wu
- Texas A&M University, College of Veterinary Medicine & Biomedical Sciences, Department of Veterinary Pathobiology, United States
| | - Christine McCoy
- Virginia Department of Agriculture and Consumer Services- Lynchburg Regional Animal Health Laboratory, United States
| | - Kelly Dietz
- Virginia Department of Agriculture and Consumer Services- Lynchburg Regional Animal Health Laboratory, United States
| | | | | | | | - Renate Reimschuessel
- U.S. Food and Drug Administration, Center for Veterinary Medicine, Office of Research, United States
| |
Collapse
|
37
|
Sharif S, Zaheer S, Mumtaz MW, Sahin O, Ahmad S, Zulfiqar S, Adnan A, Khan IU. Synthesis, Crystal Structures of Gadolinium(III) and Erbium(III) Complexes Derived from Pyridine-2,6-Dicarboxylic Acid and Fluorescent Sensing of Picric Acid. RUSS J COORD CHEM+ 2021. [DOI: 10.1134/s1070328420120076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|
38
|
Hinenoya A, Li XP, Zeng X, Sahin O, Moxley RA, Logue CM, Gillespie B, Yamasaki S, Lin J. Isolation and characterization of Escherichia albertii in poultry at the pre-harvest level. Zoonoses Public Health 2021; 68:213-225. [PMID: 33528112 DOI: 10.1111/zph.12812] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [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: 09/04/2020] [Revised: 12/01/2020] [Accepted: 01/18/2021] [Indexed: 11/28/2022]
Abstract
Escherichia albertii, often misidentified as Escherichia coli, has become an emerging foodborne human enteric pathogen. However, the prevalence and major animal reservoirs of this significant pathogen are still not clear. Here, we performed comprehensive microbiological, molecular, comparative genomics and animal studies to understand the status and features of E. albertii in the US domestic and food animals. Although no E. albertii was identified in a total of 1,022 diverse E. coli strains isolated from pets and food animals in a retrospective screening, in a pilot study, E. albertii was successfully isolated from a broiler farm (6 out of 20 chickens). The chicken E. albertii isolates showed clonal relationship as indicated by both pulsed-field gel electrophoresis (PFGE) and whole-genome sequence analysis. The isolated chicken E. albertii displayed multidrug resistance; all the resistance determinants including the extended-spectrum beta-lactamase gene, carried by plasmids, could be conjugatively transferred to E. coli, which was further confirmed by S1-PFGE and Southern hybridization. Whole-genome sequence-based phylogenetic analysis showed the chicken E. albertii strains were phylogenetically close to those of human origins. Challenge experiment demonstrated that the E. albertii strains isolated from human and wild bird could successfully colonize in the chicken intestine. Together, this study, for the first time, reported the isolation of E. albertii in poultry at the pre-hrvest level. The findings from multi-tier characterization of the chicken E. albertii strains indicated the importance of chickens as a reservoir for E. albertii. A large scale of E. albertii survey in poultry production at the pre-harvest level is highly warranted in the future.
Collapse
Affiliation(s)
- Atsushi Hinenoya
- Department of Animal Science, University of Tennessee, Knoxville, TN, USA.,Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan.,Asian Health Science Institute, Osaka Prefecture University, Osaka, Japan
| | - Xing-Ping Li
- Department of Animal Science, University of Tennessee, Knoxville, TN, USA.,College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - Ximin Zeng
- Department of Animal Science, University of Tennessee, Knoxville, TN, USA
| | - Orhan Sahin
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA, USA
| | - Rodney A Moxley
- School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Catherine M Logue
- Department of Population Health, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - Barbara Gillespie
- Department of Animal Science, University of Tennessee, Knoxville, TN, USA
| | - Shinji Yamasaki
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan.,Asian Health Science Institute, Osaka Prefecture University, Osaka, Japan
| | - Jun Lin
- Department of Animal Science, University of Tennessee, Knoxville, TN, USA
| |
Collapse
|
39
|
Gentile D, Allbaugh RA, Adiguzel MC, Kenne DE, Sahin O, Sebbag L. Bacterial Cross-Contamination in a Veterinary Ophthalmology Setting. Front Vet Sci 2020; 7:571503. [PMID: 33426013 PMCID: PMC7785980 DOI: 10.3389/fvets.2020.571503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 12/07/2020] [Indexed: 12/16/2022] Open
Abstract
The present study describes the prevalence of bacterial cross-contamination in a veterinary ophthalmology setting, a serious issue that can result in healthcare-associated (or nosocomial) infections among patients and staff. Retrospective (n = 5 patients) and prospective (n = 23 patients) studies evaluated bacterial isolates in companion animals presenting with ulcerative keratitis, sampling the patients' cornea and surrounding examination room, including the environment (exam table, countertop, floor) and ophthalmic equipment (slit lamp, transilluminator, direct ophthalmoscope, indirect headset, tonometer). Results of bacterial culture and antibiotic susceptibility testing were recorded, and degree of genetic relatedness was evaluated in six pairs of isolates (cornea + environment or equipment) using pulse-field gel electrophoresis (PFGE). Overall contamination rate of ophthalmic equipment, environment, and examination rooms (equipment + environment) was 42.9% (15/35 samples), 23.7% (9/38 samples) and 32.9% (24/73 samples), respectively. Methicillin-resistant Staphylococcus pseudintermedius (MRSP), a multi-drug resistant (MDR) pathogen with zoonotic potential, was isolated in 8.2% (6/73) of samples. The patient's cornea was likely the source of cross-contamination in 50% (3/6) of MRSP pairs as evaluated by PFGE; notably, two of the three similar bacterial strains did not have an exact match of their antibiotic susceptibility profiles, highlighting the importance of advanced diagnostics such as PFGE to assess cross-contamination in healthcare facilities. Future work could examine the contamination prevalence of specific equipment or the efficacy of cleaning protocols to mitigate cross-contamination in veterinary practice.
Collapse
Affiliation(s)
- Dominic Gentile
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Rachel A Allbaugh
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Mehmet C Adiguzel
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States.,Department of Microbiology, Faculty of Veterinary Medicine, Ataturk University, Erzurum, Turkey
| | - Danielle E Kenne
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Orhan Sahin
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Lionel Sebbag
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| |
Collapse
|
40
|
Ruddell B, Hassall A, Sahin O, Zhang Q, Plummer PJ, Kreuder AJ. Role of metAB in Methionine Metabolism and Optimal Chicken Colonization in Campylobacter jejuni. Infect Immun 2020; 89:e00542-20. [PMID: 33046508 PMCID: PMC7927925 DOI: 10.1128/iai.00542-20] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 10/04/2020] [Indexed: 12/15/2022] Open
Abstract
Campylobacter jejuni is a zoonotic pathogen and is one of the leading causes of human gastroenteritis worldwide. C. jejuni IA3902 (representative of the sheep abortion clone) is genetically similar to C. jejuni W7 (representative of strain type NCTC 11168); however, there are significant differences in the ability of luxS mutants of these strains to colonize chickens. LuxS is essential for the activated methyl cycle and generates homocysteine for conversion to l-methionine. Comparative genomics identified differential distribution of the genes metA and metB, which function to convert homoserine for downstream production of l-methionine, between IA3902 and W7, which could enable a secondary pathway for l-methionine biosynthesis in a W7 ΔluxS but not in an IA3902 ΔluxS strain. To test the hypothesis that the genes metA and metB contribute to l-methionine production and chicken colonization by Campylobacter, we constructed two mutants for phenotypic comparison, the W7 ΔmetAB ΔluxS and IA3902 ΔluxS::metAB mutants. Quantitative reverse transcription-PCR and tandem mass spectrometry protein analysis were used to validate MetAB transcription and translation as present in the IA3902 ΔluxS::metAB mutant and absent in the W7 ΔmetAB ΔluxS mutant. Time-resolved fluorescence resonance energy transfer fluorescence assays demonstrated that l-methionine and S-adenosyl methionine concentrations decreased in the W7 ΔmetAB ΔluxS mutant and increased in the IA3902 ΔluxS::metAB mutant. Assessment of chicken colonization revealed that the IA3902 ΔluxS::metAB strain partially rescued the colonization defect of the IA3902 ΔluxS strain, while the W7 ΔmetAB ΔluxS strain showed significantly decreased colonization compared to that of the wild-type and the W7 ΔluxS strain. These results indicate that the ability to maintain l-methionine production in vivo, conferred by metA and metB in the absence of luxS, is critical for normal chicken colonization by C. jejuni.
Collapse
Affiliation(s)
- Brandon Ruddell
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA
| | - Alan Hassall
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA
| | - Orhan Sahin
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA
| | - Qijing Zhang
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA
| | - Paul J Plummer
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA
| | - Amanda J Kreuder
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA
| |
Collapse
|
41
|
Culha MG, Demir O, Sahin O, Altunrende F. Sexual attitudes of healthcare professionals during the COVID-19 outbreak. Int J Impot Res 2020; 33:102-109. [PMID: 33311709 PMCID: PMC7728577 DOI: 10.1038/s41443-020-00381-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 10/17/2020] [Accepted: 11/17/2020] [Indexed: 01/10/2023]
Abstract
During the COVID-19 outbreak, which is effective worldwide, the psychological conditions of healthcare professionals deteriorate. The aim of this study was to examine health professionals’ changes in their sexual lives due to the COVID-19 outbreak in Istanbul, Turkey. This online survey was conducted between 2 and 26 May 2020 with 232 healthcare professionals working in a pandemic hospital. After obtaining informed consent, a questionnaire was sent online from the hospital database and health institutions social media accounts (Twitter®, Facebook®, Instagram®, WhatsApp® etc.) and e-mail addresses. The first section of the four-part questionnaire included demographic data, the second and third sections of pre-and post-COVID-19 attitudes, and the last section to assess sexual functions (International Index of Erecile Function for male and Female Sexual Function Index for female), anxiety and depression. Dependent sample t-test, Mc Nemar test, and multivariate analysis were used.The study was completed with 185 participants in total. Healthcare workers’ sexual desire (3.49 ± 1.12 vs. 3.22 ± 1.17; p = 0.003), weekly sexual intercourse/masturbation number (2.53 ± 1.12 vs. 1.32 ± 1.27; p < 0.001), foreplay time (16.38 ± 12.35 vs. 12.02 ± 12.14; p < 0.001), sexual intercourse time (24.65 ± 19.58 vs. 19.38 ± 18.85; p < 0.001) decreased compared to the Pre-COVID-19 outbreak. In addition, participants prefer less foreplay (p < 0.001), less oral sex (p < 0.001) and anal sex (p = 0.007) during COVID-19 and more non-face to face sexual intercourse positions (p < 0.001). When factors affecting sexual dysfunction were analyzed as univariate and multivariate, sexual dysfunction was shown to be significantly more common in males (OR = 0.053) and alcohol users (OR = 2.925). During the COVID-19 outbreak, healthcare workers’ sexual desires decreased, the number of sexual intercourses decreased, their foreplay times decreased, and their sexual intercourse positions changed to less face to face.
Collapse
Affiliation(s)
- Mehmet Gokhan Culha
- Department of Urology, University of Health Sciences, Prof. Dr. Cemil Tascioglu City Hospital, Istanbul, Turkey.
| | - Omer Demir
- Department of Gynecology and Obstetrics, Karadeniz Technical University Faculty of Medicine, Trabzon, Turkey
| | - Orhan Sahin
- Department of Gynecology and Obstetrics, University of Health Sciences, Prof. Dr. Cemil Tascioglu City Hospital, Istanbul, Turkey
| | - Fatih Altunrende
- Department of Urology, University of Health Sciences, Prof. Dr. Cemil Tascioglu City Hospital, Istanbul, Turkey
| |
Collapse
|
42
|
Wu Z, Yaeger MJ, Sahin O, Xu C, Beyi AF, Plummer PJ, Meral Ocal M, Zhang Q. A Homologous Bacterin Protects Sheep against Abortion Induced by a Hypervirulent Campylobacter jejuni Clone. Vaccines (Basel) 2020; 8:vaccines8040662. [PMID: 33172100 PMCID: PMC7711547 DOI: 10.3390/vaccines8040662] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 11/02/2020] [Accepted: 11/04/2020] [Indexed: 11/16/2022] Open
Abstract
Campylobacter jejuni clone SA has emerged as the predominant cause of ovine abortion outbreaks in the United States (US). Despite the fact that commercial Campylobacter vaccines are available, their efficacy in protecting abortion induced by C. jejuni clone SA is uncertain, and a protective vaccine is needed to control the disease. In this study, an experimental homologous bacterin (made of a clone SA isolate) and two commercial Campylobacter vaccines were evaluated for their protection against C. jejuni clone SA-induced sheep abortion. All vaccines induced high levels of antibodies against C. jejuni clone SA in pregnant ewes, but only the experimental homologous bacterin produced significant protection (80%). Immunoblotting showed that the experimental vaccine elicited more specific antibodies against C. jejuni clone SA. These findings strongly suggest the necessity of developing a homologous vaccine for the control C. jejuni clone SA induced abortion on sheep farms.
Collapse
Affiliation(s)
- Zuowei Wu
- Veterinary Microbiology and Preventive Medicine, Iowa State University, Ames, IA 50010, USA; (Z.W.); (C.X.); (A.F.B.); (P.J.P.); (M.M.O.)
| | | | - Orhan Sahin
- Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA 50010, USA;
| | - Changyun Xu
- Veterinary Microbiology and Preventive Medicine, Iowa State University, Ames, IA 50010, USA; (Z.W.); (C.X.); (A.F.B.); (P.J.P.); (M.M.O.)
| | - Ashenafi F. Beyi
- Veterinary Microbiology and Preventive Medicine, Iowa State University, Ames, IA 50010, USA; (Z.W.); (C.X.); (A.F.B.); (P.J.P.); (M.M.O.)
| | - Paul J. Plummer
- Veterinary Microbiology and Preventive Medicine, Iowa State University, Ames, IA 50010, USA; (Z.W.); (C.X.); (A.F.B.); (P.J.P.); (M.M.O.)
- Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA 50010, USA;
- National Institute of Antimicrobial Resistance Research and Education, Ames, IA 50010, USA
| | - Melda Meral Ocal
- Veterinary Microbiology and Preventive Medicine, Iowa State University, Ames, IA 50010, USA; (Z.W.); (C.X.); (A.F.B.); (P.J.P.); (M.M.O.)
| | - Qijing Zhang
- Veterinary Microbiology and Preventive Medicine, Iowa State University, Ames, IA 50010, USA; (Z.W.); (C.X.); (A.F.B.); (P.J.P.); (M.M.O.)
- Correspondence:
| |
Collapse
|
43
|
Becker SL, Li Q, Burrough ER, Kenne D, Sahin O, Gould SA, Patience JF. Effects of an F18 enterotoxigenic Escherichia coli challenge on growth performance, immunological status, and gastrointestinal structure of weaned pigs and the potential protective effect of direct-fed microbial blends. J Anim Sci 2020; 98:5821140. [PMID: 32300795 PMCID: PMC7228676 DOI: 10.1093/jas/skaa113] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 04/16/2020] [Indexed: 12/15/2022] Open
Abstract
The objective of this experiment was to investigate the impact of an F18 enterotoxigenic Escherichia coli (ETEC) challenge on growth performance, aspects of intestinal function, and selected immune responses of piglets, as well as to evaluate potential protective effects of direct-fed microbial (DFM) blends. Seventy-two weaned piglets (6.4 ± 0.2 kg body weight [BW]; ~21 d of age) were assigned to one of four treatments: 1) NC: Nonchallenged (n = 10), 2) positive challenged control (PC): F18 ETEC-challenged (n = 10), 3) PC + DFM1 (n = 8; three strains of Bacillus amyloliquefaciens; 7.5 × 105 colony-forming units [cfu]/g), or 4) PC + DFM2 (n=8; 2 strains of B. amyloliquefaciens and one strain of Bacillus subtilis; 1.5 × 105 cfu/g). Feed intake and BW were recorded on day 0, 7, and 17. Pigs were sham-infected either with 6 mL phosphate-buffered saline or inoculated with 6 mL F18 ETEC (~1.9 × 109 cfu/mL) on day 7 (0 d postinoculation [dpi]). All ETEC-challenged pigs were confirmed to be genetically susceptible to F18. Pigs had ad libitum access to feed and water throughout the 17-d trial. Fecal scores were visually ranked and rectal temperatures were recorded daily. To evaluate ETEC shedding, fecal swabs were collected on dpi 0, 1, 2, 3, 5, 7, and 10. Blood samples were collected on dpi 0, 1, 2, 4, 7, and 10. Ileal tissues were collected at necropsy on dpi 10. All challenged treatments had lower final BW, decreased average daily gain (ADG), and average daily feed intake (ADFI) during the 10-d postchallenge period (P < 0.01). The DFM2 treatment increased E. coli shedding on dpi 2 and decreased iton dpi 7 (P < 0.05) compared with the PC. Rectal temperature decreased across all challenged treatments (P < 0.01). Ileal mRNA abundance of occludin (OCLN) and zonula occludens-1 (ZO-1) decreased in PC and DFM1 compared with NC (P < 0.05). Pigs fed DFM2 had intermediate ileal mRNA abundance of OCLN and increased ZO-1 mRNA compared with pigs in PC (P < 0.05). Interleukin 8 (IL-8) increased in the plasma of PC and DFM2 on dpi 2 compared with NC (P < 0.05). Mucosal IL-8 increased in PC compared with NC (P < 0.05). All challenged treatments tended to have elevated tumor necrosis factor-α (TNF-α) mRNA abundance compared with NC (P < 0.10). Challenged pigs had reduced secretory immunoglobulin A and villus height compared with NC pigs (P < 0.05). The impact of an ETEC challenge on intestinal function and the immune system has been revealed, information critical to developing improved treatment regimes.
Collapse
Affiliation(s)
| | - Qingyun Li
- Department of Animal Science, Iowa State University, Ames, IA
| | - Eric R Burrough
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA
| | - Danielle Kenne
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA
| | - Orhan Sahin
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA
| | - Stacie A Gould
- Department of Animal Science, Iowa State University, Ames, IA
| | - John F Patience
- Department of Animal Science, Iowa State University, Ames, IA
| |
Collapse
|
44
|
Tascioglu T, Karatay M, Erdem Y, Tekiner A, Celik H, Sahin O, Sertbas I, Bayar MA. Simvastatin in an experimental spinal cord injury model: a histopathological and biochemical evidence based study. BRATISL MED J 2020; 121:722-726. [PMID: 32955904 DOI: 10.4149/bll_2020_118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
AIM In this study we tried to determine the possible neuroprotective effects of simvastatin in a rat model of Spinal Cord Injury (SCI) with the help of biochemical and histopathological tests. METHODS Rats were divided into 5 groups:1) SCI control, 2) Sham operated, 3) SCI with 10 mg/kg intraperitoneal simvastatin, 4) SCI with 10 mg/kg oral simvastatin, 5) SCI with 10 mg/kg subcutaneous simvastatin. After the treatment period, all rats were sacrificed; their blood and spinal cord samples were taken for biochemical and histopathological assessment. RESULTS When the groups were compared in terms of oedema and inflammation status, the scores of groups receiving simvastatin were better than the control and sham groups (p = 0.001 and p = 0.038 respectively). When the 3 treatment groups (oral, intraperitoneal and subcutaneous simvastatin groups) were compared with each other in terms of inflammation, haemorrhage and oedema, there were no significant differences between groups (p = 0.112, p = 0.797 and p = 0.188, respectively). NSE and S100B levels were significantly lower in the treatment groups compared to the sham group (p = 0.039 and p = 0.004 respectively). CONCLUSION According to our biochemical and histopathological findings, simvastatin 10 mg/kg has a positive impact in the spinal cord injury model in rats, regardless of route of application (Tab. 1, Fig. 5, Ref. 26).
Collapse
|
45
|
Dai L, Sahin O, Grover M, Zhang Q. New and alternative strategies for the prevention, control, and treatment of antibiotic-resistant Campylobacter. Transl Res 2020; 223:76-88. [PMID: 32438073 PMCID: PMC7423705 DOI: 10.1016/j.trsl.2020.04.009] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [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] [Received: 01/06/2020] [Revised: 04/10/2020] [Accepted: 04/11/2020] [Indexed: 12/24/2022]
Abstract
Campylobacter is an enteric pathogen and a leading bacterial cause of diarrhea worldwide. It is widely distributed in food animal species and is transmitted to humans primarily through the foodborne route. While generally causing self-limited diarrhea in humans, Campylobacter may induce severe or systemic infections in immunocompromised or young/elderly patients, which often requires antibiotic therapy with the first-line antibiotics including fluoroquinolones and macrolides. Over the past decades, Campylobacter has acquired resistance to these clinically significant antibiotics, compromising the effectiveness of antibiotic treatments. To address this concern, many studies have been conducted to advance novel and alternative measures to control antibiotic-resistant Campylobacter in animal reservoirs and in the human host. Although some of these undertakings have yielded promising results, efficacious and reliable alternative approaches are yet to be developed. In this review article, we will describe Campylobacter-associated disease spectrums and current treatment options, discuss the state of antibiotic resistance and alternative therapies, and provide an evaluation of various approaches that are being developed to control Campylobacter infections in animal reservoirs and the human host.
Collapse
Affiliation(s)
- Lei Dai
- Departments of Veterinary Microbiology and Preventive Medicine
| | - Orhan Sahin
- Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, United States 50011
| | - Madhusudan Grover
- Division of Gastroenterology and Hepatology, Enteric NeuroScience Program, Mayo Clinic, Rochester, Minnesota, United States 55902
| | - Qijing Zhang
- Departments of Veterinary Microbiology and Preventive Medicine.
| |
Collapse
|
46
|
Adiguzel MC, Baran A, Wu Z, Cengiz S, Dai L, Oz C, Ozmenli E, Goulart DB, Sahin O. Prevalence of Colistin Resistance in Escherichia coli in Eastern Turkey and Genomic Characterization of an mcr-1 Positive Strain from Retail Chicken Meat. Microb Drug Resist 2020; 27:424-432. [PMID: 32721263 DOI: 10.1089/mdr.2020.0209] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
Colistin is one of the most effective antibiotics against multidrug resistant Gram-negative bacteria. However, the recent emergence of plasmid-borne mobilized colistin resistance (mcr) genes is considered a serious antimicrobial resistance challenge worldwide. In this study, we report detection of an mcr-1 carrying Escherichia coli isolate (named ATAVET mcr-1 Turkey) from retail raw chicken meat in Turkey. Of the 11 (from 500 total tested) phenotypically colistin-resistant isolates, 1 was shown to carry the mcr-1 gene by PCR. Whole-genome sequencing indicated that mcr-1 was located on a ∼13 kb-long contig that was almost identical to the corresponding part in pZJ1635, an IncI2 plasmid encoding mcr-1 in the same genetic context in another E. coli strain. In addition, ATAVET mcr-1 Turkey harbored blaCTX-M-8, qnrB19, mdf(A), tet(A), sul2, aph(3″)-Ib, aph(6)-Id, and floR resistance genes. Phylogenetic analysis based on whole genome and multilocus sequence typing indicated that ATAVET mcr-1 Turkey was more closely related to mcr-1 carrying E. coli isolates from food and human clinical samples previously reported from different parts of the world than to those from Turkey. These findings further emphasize the worldwide emergence and spread of mcr meditated colistin resistance in bacteria with zoonotic potential within animals and the food chain.
Collapse
Affiliation(s)
- Mehmet Cemal Adiguzel
- Department of Microbiology, Faculty of Veterinary Medicine, Ataturk University, Erzurum, Turkey.,Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA
| | - Alper Baran
- Department of Food Quality Control and Analysis, Erzurum Vocational School, Ataturk University, Erzurum, Turkey
| | - Zuowei Wu
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA
| | - Seyda Cengiz
- Department of Microbiology, Faculty of Veterinary Medicine, Ataturk University, Erzurum, Turkey
| | - Lei Dai
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA
| | - Cihan Oz
- Department of Microbiology, Faculty of Veterinary Medicine, Ataturk University, Erzurum, Turkey
| | - Esma Ozmenli
- Department of Microbiology, Faculty of Veterinary Medicine, Ataturk University, Erzurum, Turkey
| | - Debora Brito Goulart
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA
| | - Orhan Sahin
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa, USA
| |
Collapse
|
47
|
Yaeger MJ, Wu Z, Plummer PJ, Sahin O, Ocal MM, Beyi AF, Xu C, Zhang Q, Griffith RW. Experimental evaluation of tulathromycin as a treatment for Campylobacter jejuni abortion in pregnant ewes. Am J Vet Res 2020; 81:205-209. [PMID: 32101046 DOI: 10.2460/ajvr.81.3.205] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To evaluate the efficacy of tulathromycin for prevention of abortion in pregnant ewes when administered within 24 hours after experimental inoculation with Campylobacter jejuni. ANIMALS 20 pregnant ewes between 72 and 92 days of gestation. PROCEDURES All ewes were inoculated with a field strain of C jejuni (8.5 × 108 to 10.6 × 108 CFUs, IV). Eighteen hours later, ewes received either tulathromycin (1.1 mL/45 kg [2.4 mg/kg], SC; n = 10) or sterile saline (0.9% NaCl) solution (1.1 mL/45 kg, SC; sham; 10). Ewes were euthanized immediately after observation of vaginal bleeding, abortion, or completion of a 21-day observation period. Necropsy was performed on all ewes, and tissue specimens were obtained for bacterial culture and histologic examination. RESULTS 1 sham-treated ewe and 1 tulathromycin-treated ewe developed signs of severe endotoxemia and were euthanized within 24 hours after C jejuni inoculation. Seven sham-treated and 2 tulathromycin-treated ewes developed vaginal bleeding or aborted and were euthanized between 4 and 21 days after C jejuni inoculation. The proportion of tulathromycin-treated ewes that developed vaginal bleeding or aborted during the 21 days after C jejuni inoculation (2/9) was significantly less than that for the sham-treated ewes (7/9). CONCLUSIONS AND CLINICAL RELEVANCE Results suggested that administration of tulathromycin to pregnant ewes following exposure to C jejuni was effective in decreasing the number of C jejuni-induced abortions. Because of concerns regarding the development of macrolide resistance among Campylobacter strains, prophylactic use of tulathromycin in sheep is not recommended.
Collapse
|
48
|
Chen X, Resende-De-Macedo N, Sitthicharoenchai P, Sahin O, Burrough E, Clavijo M, Derscheid R, Schwartz K, Lantz K, Robbe-Austerman S, Main R, Li G. Genetic characterization of Streptococcus equi subspecies zooepidemicus associated with high swine mortality in the United States. Transbound Emerg Dis 2020; 67:2797-2808. [PMID: 32460392 DOI: 10.1111/tbed.13645] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [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: 03/24/2020] [Revised: 04/21/2020] [Accepted: 05/15/2020] [Indexed: 12/22/2022]
Abstract
High mortality events due to Streptococcus equi subspecies zooepidemicus (Streptococcus zooepidemicus) in swine have not previously been reported in the United States. In September and October 2019, outbreaks with swine mortality up to 50% due to S. zooepidemicus septicaemia were reported in Ohio and Tennessee. Genomic epidemiological analysis revealed that the eight outbreak isolates were clustered together with ATCC 35246, a Chinese strain caused outbreaks with high mortality, also closely related to three isolates from human cases from Virginia, but significantly different from an outbreak-unrelated swine isolate from Arizona and most isolates from other animal species. Comparative genomic analysis on two outbreak isolates and another outbreak-unrelated isolate identified several genomic islands and virulence genes specifically in the outbreak isolates only, which are likely associated with the high mortality observed in the swine population. These findings have implications for understanding, tracking and possibly preventing diseases caused by S. zooepidemicus in swine.
Collapse
Affiliation(s)
- Xuhua Chen
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Nubia Resende-De-Macedo
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Panchan Sitthicharoenchai
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Orhan Sahin
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Eric Burrough
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Maria Clavijo
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Rachel Derscheid
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Kent Schwartz
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Kristina Lantz
- National Veterinary Services Laboratories, Ames, Iowa, USA
| | | | - Rodger Main
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| | - Ganwu Li
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA
| |
Collapse
|
49
|
Sitthicharoenchai P, Derscheid R, Schwartz K, Macedo N, Sahin O, Chen X, Li G, Main R, Burrough E. Cases of high mortality in cull sows and feeder pigs associated with Streptococcus equi subsp. zooepidemicus septicemia. J Vet Diagn Invest 2020; 32:565-571. [PMID: 32532177 DOI: 10.1177/1040638720927669] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Investigations of 2 cases of high mortality in cull sows and feeder pigs from a buying station in Ohio and cull sows at an abattoir in Tennessee were conducted at the Iowa State University Veterinary Diagnostic Laboratory. The animals were presented as weak, lethargic, and some with high fever. Rapidly escalating mortality was reported to be as high as 30-50% within groups at the buying station over 8-10 d, and 30-40% over 5-7 d at the abattoir. Splenomegaly and red lymph nodes were the most consistent macroscopic findings, with scant fibrinous polyserositis observed in one sow. The microscopic lesions of vasculitis, fibrin thrombi, fibrinosuppurative polyserositis, and intralesional bacteria were consistent with acute bacterial septicemia. Bacterial culture isolated Streptococcus equi subsp. zooepidemicus (S. zooepidemicus) from multiple organs, including spleen, lung, and kidney. PCR tests were negative for African swine fever virus, classical swine fever virus, Erysipelothrix rhusiopathiae, porcine reproductive and respiratory syndrome virus, porcine circovirus 2, and Salmonella spp. Porcine circovirus 3 was inconsistently detected at low levels by PCR, with a lack of associated lesions. Next-generation sequencing identified S. zooepidemicus and porcine partetravirus in the serum sample of the feeder pig from the buying station. Phylogenetic analysis of the szP gene indicated that the S. zooepidemicus isolates from Ohio and Tennessee are in genotype VI. We conclude that the cause of these high mortality events in swine was S. zooepidemicus septicemia.
Collapse
Affiliation(s)
- Panchan Sitthicharoenchai
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA
| | - Rachel Derscheid
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA
| | - Kent Schwartz
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA
| | - Nubia Macedo
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA
| | - Orhan Sahin
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA
| | - Xuhua Chen
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA
| | - Ganwu Li
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA
| | - Rodger Main
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA
| | - Eric Burrough
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA
| |
Collapse
|
50
|
Wang M, Zeng Z, Jiang F, Zheng Y, Shen H, Macedo N, Sun Y, Sahin O, Li G. Role of enterotoxigenic Escherichia coli prophage in spreading antibiotic resistance in a porcine-derived environment. Environ Microbiol 2020; 22:4974-4984. [PMID: 32419209 DOI: 10.1111/1462-2920.15084] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 05/13/2020] [Indexed: 11/27/2022]
Abstract
Enterotoxigenic Escherichia coli (ETEC) cause acute secretory diarrhoea in pigs, posing a great economic loss to the swine industry. This study analysed the prevalence and genetic characteristics of prophages from 132 ETEC isolates from symptomatic pigs to determine their potential for spreading antibiotic resistance. A total of 1105 potential prophages were identified, and the distribution of the genome size showed three 'overlapping' trends. Similarity matrix comparison showed that prophages correlated with the ETEC lineage distribution, and further identification of these prophages corroborated the lineage specificity. In total, 1206 antibiotic resistance genes (ARGs) of 52 different categories were identified in 132 ETEC strains; among these, 2.65% (32/1206) of ARGs were found to be carried by prophages. Analysis of flanking sequences showed that almost all the ARGs could be grouped into two types: 'blaTEM-1B ' and 'classic class 1 integron (IntI1)'. They co-occurred with a strictly conserved recombinase and transposon Tn3 family but with a difference: the 'blaTEM-1B type' prophages exhibited a classic Tn2 transposon structure with 100% sequence identity, whereas the 'IntI1 type' co-occurred with the TnAs2 transposon with only 84% sequence identity. These results imply that ARGs might be pervasive in natural bacterial populations through transmission by transposable bacteriophages.
Collapse
Affiliation(s)
- Mianzhi Wang
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, 50011, USA.,Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Zhenling Zeng
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Fengwei Jiang
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Ying Zheng
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, 50011, USA
| | - Huigang Shen
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, 50011, USA
| | - Nubia Macedo
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, 50011, USA
| | - Yongxue Sun
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Orhan Sahin
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, 50011, USA
| | - Ganwu Li
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, 50011, USA.,State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| |
Collapse
|