1
|
Ke CH, Lai PY, Hsu FY, Hsueh PR, Chiou MT, Lin CN. Antimicrobial susceptibility and resistome of Actinobacillus pleuropneumoniae in Taiwan: a next-generation sequencing analysis. Vet Q 2024; 44:1-13. [PMID: 38688482 PMCID: PMC11064736 DOI: 10.1080/01652176.2024.2335947] [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: 09/26/2023] [Accepted: 03/21/2024] [Indexed: 05/02/2024] Open
Abstract
Actinobacillus pleuropneumoniae infection causes a high mortality rate in porcine animals. Antimicrobial resistance poses global threats to public health. The current study aimed to determine the antimicrobial susceptibilities and probe the resistome of A. pleuropneumoniae in Taiwan. Herein, 133 isolates were retrospectively collected; upon initial screening, 38 samples were subjected to next-generation sequencing (NGS). Over the period 2017-2022, the lowest frequencies of resistant isolates were found for ceftiofur, cephalexin, cephalothin, and enrofloxacin, while the highest frequencies of resistant isolates were found for oxytetracycline, streptomycin, doxycycline, ampicillin, amoxicillin, kanamycin, and florfenicol. Furthermore, most isolates (71.4%) showed multiple drug resistance. NGS-based resistome analysis revealed aminoglycoside- and tetracycline-related genes at the highest prevalence, followed by genes related to beta-lactam, sulfamethoxazole, florphenicol, and macrolide. A plasmid replicon (repUS47) and insertion sequences (IS10R and ISVAp11) were identified in resistant isolates. Notably, the multiple resistance roles of the insertion sequence IS10R were widely proposed in human medicine; however, this is the first time IS10R has been reported in veterinary medicine. Concordance analysis revealed a high consistency of phenotypic and genotypic susceptibility to florphenicol, tilmicosin, doxycycline, and oxytetracycline. The current study reports the antimicrobial characterization of A. pleuropneumoniae for the first time in Taiwan using NGS.
Collapse
Affiliation(s)
- Chiao-Hsu Ke
- Sustainable Swine Research Center, National Pingtung University of Science and Technology, Pingtung, Taiwan
- Animal Disease Diagnostic Center, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - Pan-Yun Lai
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - Feng-Yang Hsu
- Animal Disease Diagnostic Center, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - Po-Ren Hsueh
- Department of Laboratory Medicine and Internal Medicine, China Medical University Hospital, School of Medicine, China Medical University, Taichung, Taiwan
- Department of Laboratory Medicine and Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Ming-Tang Chiou
- Sustainable Swine Research Center, National Pingtung University of Science and Technology, Pingtung, Taiwan
- Animal Disease Diagnostic Center, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung, Taiwan
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - Chao-Nan Lin
- Sustainable Swine Research Center, National Pingtung University of Science and Technology, Pingtung, Taiwan
- Animal Disease Diagnostic Center, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung, Taiwan
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung, Taiwan
| |
Collapse
|
2
|
Delanote V, Callens R, Vogelaers D, Deeren D. Screening for multidrug-resistant organisms in high-risk hospitalized patients with hematologic diseases. Eur J Haematol 2024; 112:627-632. [PMID: 38122813 DOI: 10.1111/ejh.14157] [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: 07/12/2023] [Revised: 12/05/2023] [Accepted: 12/06/2023] [Indexed: 12/23/2023]
Abstract
OBJECTIVES Patients treated for hematologic malignancies are at higher risk for blood stream infections (BSI) and multidrug-resistant organisms (MDRO) are increasingly involved. Studies showed a significant association between rectal colonization status and a higher risk of subsequent MDRO BSI. The objective of our study was to probe the practice of surveillance cultures in Belgian hematology centers. METHODS A questionnaire was sent to the 13 hematology centers participating in the acute leukemia board of the Belgian Hematology Society. 21 questions probed for the method of surveillance cultures, MDRO screened, antimicrobial prophylaxis, and empirical therapy and their relationship with colonization status. RESULTS All centers completed the questionnaire in full. Routine gastrointestinal surveillance cultures in hematologic patients are taken in 10 hospitals. Organisms tested for included mostly ESBL (n = 9) and carbapenem-resistant (n = 8) Enterobacterales. All centers with a screening strategy adapt empiric antibiotic therapy based on MDRO colonization. Prophylaxis strategies are variable, only two centers adapt prophylaxis upon documentation of fluoroquinolone resistance. CONCLUSIONS The majority of the Belgian centers perform routine surveillance cultures and adapt empiric therapy for neutropenic fever accordingly. Other reasons for testing include to gain insight into local epidemiology and to prevent in-hospital transmission. In general, there was significant variability in surveillance dimensions.
Collapse
Affiliation(s)
- Valentine Delanote
- AZ Delta internal medicine, AZ Delta General Hospital, Roeselare, Belgium
| | - Rutger Callens
- AZ Delta Clinical Hematology, AZ Delta General Hospital, Roeselare, Belgium
| | - Dirk Vogelaers
- AZ Delta Infectiology, AZ Delta General Hospital, Roeselare, Belgium
- Faculty of Health sciences, University Ghent, Ghent, Belgium
| | - Dries Deeren
- AZ Delta Clinical Hematology, AZ Delta General Hospital, Roeselare, Belgium
| |
Collapse
|
3
|
Negri M, Lima BM, Woloszynek RDSBR, Molina RAS, Germano CMR, Melo DG, de Souza LC, de Avó LRDS. Prevalence and antimicrobial resistance profile of pathogens isolated from patients with urine tract infections admitted to a university hospital in a medium-sized Brazilian city. Rev Inst Med Trop Sao Paulo 2024; 66:e3. [PMID: 38198376 PMCID: PMC10768654 DOI: 10.1590/s1678-9946202466003] [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: 03/31/2023] [Accepted: 11/21/2023] [Indexed: 01/12/2024] Open
Abstract
This study aimed to determine the antibiotic profile of microorganisms isolated from urine samples of patients with community urine tract infections (UTI) admitted to the University Hospital of the Federal University of Sao Carlos to support an appropriate local empirical treatment. A retrospective cross-sectional study was conducted from October 2018 to October 2020. Data from 1,528 positive urine cultures for bacterial pathogens and antibiograms were tabulated. Bacterial species prevalence and their resistance profile were analyzed and compared by sex and age. For Gram-negative fermenting bacteria, resistance rates were compared between patients with previous hospitalization and the total of infections caused by this group. For comparisons, the Chi-square test was performed, using Fisher's exact test when necessary (BioEstat program, adopting p ≤ 0.05). A multivariate analysis was applied to assess the effect of the studied variables in predicting multidrug resistance. Infections were more prevalent in women and older adults. Gram-negative bacteria represented 90.44% of total cultures. In both sexes, E. coli prevalence was significantly higher in adults compared with older adults (p < 0.0001). For several antibiotics, resistance rates were higher in the older adults compared with other ages and in patients with Gram-negative fermenting infections and previous hospitalization compared with the total of infections by this group of bacteria. The closer to the hospitalization, the higher the number of antibiotics with superior resistance rates. Resistance rates for aminoglycosides, carbapenems, ceftazidime, nitrofurantoin, piperacillin+tazobactam, and fosfomycin were less than 20%, considered adequate for empirical treatment. Only hospitalization in the previous 90 days was statistically significant in predicting infections by multidrug-resistant bacteria.
Collapse
Affiliation(s)
- Mariana Negri
- Universidade Federal de São Carlos, Departamento de Medicina, São Carlos, São Paulo, Brazil
| | - Bárbara Martins Lima
- Universidade Federal de São Carlos, Hospital Universitário, São Carlos, São Paulo, Brazil
| | | | | | | | - Débora Gusmão Melo
- Universidade Federal de São Carlos, Departamento de Medicina, São Carlos, São Paulo, Brazil
| | | | | |
Collapse
|
4
|
Holzinger JM, Toelge M, Werner M, Ederer KU, Siegmund HI, Peterhoff D, Blaas SH, Gisch N, Brochhausen C, Gessner A, Bülow S. Scorpionfish BPI is highly active against multiple drug-resistant Pseudomonas aeruginosa isolates from people with cystic fibrosis. eLife 2023; 12:e86369. [PMID: 37461324 PMCID: PMC10353861 DOI: 10.7554/elife.86369] [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: 01/21/2023] [Accepted: 06/07/2023] [Indexed: 07/20/2023] Open
Abstract
Chronic pulmonary infection is a hallmark of cystic fibrosis (CF) and requires continuous antibiotic treatment. In this context, Pseudomonas aeruginosa (Pa) is of special concern since colonizing strains frequently acquire multiple drug resistance (MDR). Bactericidal/permeability-increasing protein (BPI) is a neutrophil-derived, endogenous protein with high bactericidal potency against Gram-negative bacteria. However, a significant range of people with CF (PwCF) produce anti-neutrophil cytoplasmic antibodies against BPI (BPI-ANCA), thereby neutralizing its bactericidal function. In accordance with literature, we describe that 51.0% of a total of 39 PwCF expressed BPI-ANCA. Importantly, an orthologous protein to human BPI (huBPI) derived from the scorpionfish Sebastes schlegelii (scoBPI) completely escaped recognition by these autoantibodies. Moreover, scoBPI exhibited high anti-inflammatory potency towards Pa LPS and was bactericidal against MDR Pa derived from PwCF at nanomolar concentrations. In conclusion, our results highlight the potential of highly active orthologous proteins of huBPI in treatment of MDR Pa infections, especially in the presence of BPI-ANCA.
Collapse
Affiliation(s)
- Jonas Maurice Holzinger
- Institute of Clinical Microbiology and Hygiene Regensburg, University Hospital Regensburg, Regensburg, Germany
| | - Martina Toelge
- Institute of Clinical Microbiology and Hygiene Regensburg, University Hospital Regensburg, Regensburg, Germany
| | - Maren Werner
- Institute of Clinical Microbiology and Hygiene Regensburg, University Hospital Regensburg, Regensburg, Germany
| | - Katharina Ursula Ederer
- Institute of Clinical Microbiology and Hygiene Regensburg, University Hospital Regensburg, Regensburg, Germany
| | | | - David Peterhoff
- Institute of Clinical Microbiology and Hygiene Regensburg, University Hospital Regensburg, Regensburg, Germany
- Institute of Medical Microbiology and Hygiene Regensburg, University of Regensburg, Regensburg, Germany
| | | | - Nicolas Gisch
- Division of Bioanalytical Chemistry, Priority Area Infections, Research Center Borstel, Leibniz Lung Center, Borstel, Germany
| | - Christoph Brochhausen
- Institute of Pathology, University of Regensburg, Regensburg, Germany
- Institute of Pathology, University Medical Center Mannheim, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - André Gessner
- Institute of Clinical Microbiology and Hygiene Regensburg, University Hospital Regensburg, Regensburg, Germany
- Institute of Medical Microbiology and Hygiene Regensburg, University of Regensburg, Regensburg, Germany
| | - Sigrid Bülow
- Institute of Clinical Microbiology and Hygiene Regensburg, University Hospital Regensburg, Regensburg, Germany
| |
Collapse
|
5
|
Noskova EO, Markova OV, Knorre DA, Galkina KV. Tyrosol induces multiple drug resistance in yeast Saccharomyces cerevisiae. Front Microbiol 2023; 14:1203243. [PMID: 37342567 PMCID: PMC10277503 DOI: 10.3389/fmicb.2023.1203243] [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: 04/10/2023] [Accepted: 05/18/2023] [Indexed: 06/23/2023] Open
Abstract
In yeast, multiple (pleiotropic) drug resistance (MDR) transporters efflux xenobiotics from the cytoplasm to the environment. Additionally, upon the accumulation of xenobiotics in the cells, MDR genes are induced. At the same time, fungal cells can produce secondary metabolites with physico-chemical properties similar to MDR transporter substrates. Nitrogen limitation in yeast Saccharomyces cerevisiae leads to the accumulation of phenylethanol, tryptophol, and tyrosol, which are products of aromatic amino acid catabolism. In this study, we investigated whether these compounds could induce or inhibit MDR in yeast. Double deletion of PDR1 and PDR3 genes, which are transcription factors that upregulate the expression of PDR genes, reduced yeast resistance to high concentrations of tyrosol (4-6 g/L) but not to the other two tested aromatic alcohols. PDR5 gene, but not other tested MDR transporter genes (SNQ2, YOR1, PDR10, PDR15) contributed to yeast resistance to tyrosol. Tyrosol inhibited the efflux of rhodamine 6G (R6G), a substrate for MDR transporters. However, preincubating yeast cells with tyrosol induced MDR, as evidenced by increased Pdr5-GFP levels and reduced yeast ability to accumulate Nile red, another fluorescent MDR-transporter substrate. Moreover, tyrosol inhibited the cytostatic effect of clotrimazole, the azole antifungal. Our results demonstrate that a natural secondary metabolite can modulate yeast MDR. We speculate that intermediates of aromatic amino acid metabolites coordinate cell metabolism and defense mechanisms against xenobiotics.
Collapse
Affiliation(s)
- Elizaveta O. Noskova
- Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, Moscow, Russia
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Olga V. Markova
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Dmitry A. Knorre
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Kseniia V. Galkina
- Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, Moscow, Russia
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russia
| |
Collapse
|
6
|
Sagar SS, Rani S, Pushpa Sadanandan S. Combined Effect of Isolated Bacteriophage and Neem Extract on Isolated Multiple Drug-Resistant Pathogenic Escherichia coli E1 From Well Water. Environ Health Insights 2023; 17:11786302231166818. [PMID: 37223331 PMCID: PMC10201146 DOI: 10.1177/11786302231166818] [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] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 03/13/2023] [Indexed: 05/25/2023]
Abstract
Multiple drug-resistant Escherichia coli (E. coli) is a serious cause of concern, and they can be observed in hospital settings, natural environment, and animals. Dissemination of multiple drug-resistant (MDR) E. coli can pose a high risk to public health. Moreover, they are hard to control with commercial antibiotics, since they have acquired resistance against most of them. Therefore, to control multiple drug-resistant bacteria, alternative strategies have been adopted such as phage therapy, herbal remedies, nanoparticles etc. In the current study, the combined application of neem leaf extract and bacteriophage is used to control an isolated multiple drug-resistant E. coli E1. We have applied 0.1 mg/ml concentration of neem extract in combination with an isolated phage vB_EcoM_C2 of 1011 titer and found that the combinatorial treatment approach significantly controls the growth of E. coli E1 as compared to a single non-combinatorial treatment. In this study, every E. coli cell is targeted by 2 antimicrobials (phage and neem extract) at the same time, which is more effective as compared to the sole treatment. Implementation of the neem extract with phage opens a new alternative approach to the chemotherapeutics for the control of multiple drug-resistant bacterial pathogens. This approach may be effective, economical, and eco-friendly to combat MDR.
Collapse
Affiliation(s)
- Sadhana Singh Sagar
- Sadhana Singh Sagar, Ecology and
Environment Research Group, Center for Water Resources Development and
management, Kunnamangalam, Kozhikode 673571, Kerala.
| | | | | |
Collapse
|
7
|
Khan U, Pandey E, Gandham N, Das N, Mukhida S, Kannuri S, Bhaumik S, Mirza S. A case series and literature review of infections due to Myroides spp.: identification of contributing factors and emerging antibiotic susceptibility trends. Access Microbiol 2023; 5:acmi000549.v2. [PMID: 37323940 PMCID: PMC10267660 DOI: 10.1099/acmi.0.000549.v2] [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: 12/20/2022] [Accepted: 03/09/2023] [Indexed: 06/17/2023] Open
Abstract
Introduction Infections forby Myroides spp. can lead to significant morbidity and mortality, particularly in immunocompromised patients with underlying co-morbidities. Recent reports have highlighted its intrinsic and acquired drug resistance, making it a particularly challenging infectious agent to combat. Methods Myroides spp. isolated and reported in clinically significant urine samples were considered for the study. Identification of the organism was done via the VITEK 2C system. Antibiotic susceptibility testing was done using both manual and automated methods following Clinical and Laboratory Standards Institute (CLSI) guidelines. Existing literature was searched on MEDLINE using PubMed. Results We present a series of five catheter-associated urinary tract infections due to Myroides odoratimimus , with sensitivity to only minocycline. This is the first case from Western India, and the third case in the existing literature that shows Myroides sensitivity only to minocycline. Our literature review is the first to systematically describe contributory factors to infection, allowing us to devise a clinically relevant tool that delineates contributory factors and efficacious drugs in Myroides spp. infection. Conclusion Myroides spp. infections, previously considered rare and opportunistic, need cognizance and diagnostic suspicion especially in particular associated conditions.
Collapse
Affiliation(s)
- Uzair Khan
- Department of Microbiology, Dr. D. Y. Patil Medical College, Hospital and Research Centre, Dr. D.Y. Patil Vidyapeeth, Pune, India
| | - Ellora Pandey
- Department of Microbiology, Dr. D. Y. Patil Medical College, Hospital and Research Centre, Dr. D.Y. Patil Vidyapeeth, Pune, India
| | - Nageswari Gandham
- Department of Microbiology, Dr. D. Y. Patil Medical College, Hospital and Research Centre, Dr. D.Y. Patil Vidyapeeth, Pune, India
| | - Nikunja Das
- Department of Microbiology, Dr. D. Y. Patil Medical College, Hospital and Research Centre, Dr. D.Y. Patil Vidyapeeth, Pune, India
| | - Sahjid Mukhida
- Department of Microbiology, Dr. D. Y. Patil Medical College, Hospital and Research Centre, Dr. D.Y. Patil Vidyapeeth, Pune, India
| | - Sriram Kannuri
- Department of Microbiology, Dr. D. Y. Patil Medical College, Hospital and Research Centre, Dr. D.Y. Patil Vidyapeeth, Pune, India
| | - Shalini Bhaumik
- Department of Microbiology, Dr. D. Y. Patil Medical College, Hospital and Research Centre, Dr. D.Y. Patil Vidyapeeth, Pune, India
| | - Shahzad Mirza
- Department of Microbiology, Dr. D. Y. Patil Medical College, Hospital and Research Centre, Dr. D.Y. Patil Vidyapeeth, Pune, India
| |
Collapse
|
8
|
Celik B, Ergul B, Kekec AI, Hala B, Maslak B, Sigirci BD, Kahraman BB, Bagcigil AF, Metiner K, Ak S. Beta-lactam, aminoglycoside, and quinolone resistance in Escherichia coli strains isolated from shrimps and mussels in the Marmara Sea. VET MED-CZECH 2023; 68:208-217. [PMID: 37982027 PMCID: PMC10581531 DOI: 10.17221/105/2022-vetmed] [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: 12/06/2022] [Accepted: 05/10/2023] [Indexed: 11/21/2023] Open
Abstract
The purpose of the study was to examine the prevalence of Escherichia coli in shrimps and mussels, and to determine the distribution of β-lactam, aminoglycoside, quinolone, and multi-drug resistance phenotypically and genotypically in E. coli isolates obtained from mussels and shrimps in Istanbul. Faecal samples were collected from mussels (n = 96) and shrimps (n = 96) from the Marmara Sea coastline and fish markets in Istanbul. For the detection of antibiotic susceptibilities, seven antibiotic groups were used. β-lactamase, aminoglycoside, and quinolone genes were also determined. A total of 34 (17.7%, 15 shrimps, and 19 mussels) E. coli were isolated, and 17 (50%) were found to be resistant to one or more antimicrobials. The highest resistance was seen against aminoglycosides with 11 isolates (32.35%), followed by quinolones with 10 isolates (29.41%) and extended-spectrum β-lactamase (ESBL) with 4 isolates (11.76%). Multi-drug resistance was detected in 5 isolates (14.7%) from 3 shrimp and 2 mussel samples. The prevalence of ESBL genes was demonstrated at 3.84% in mussels and shrimp samples. There were no AmpC and carbapenemase-producing genes. These samples harbored blaCTX-M-1 (n = 3) and blaTEM (n = 4). Ten isolates were resistant to aminoglycosides genotypically. Resistance genes detected were strB in 2 isolates, aadA in 5, strB and aadA together in 3, ANT('')-Ia, aphA1 and aphA2 simultaneously in 3, aphA1 in 1, aac(3)-IIa in 1 isolate. aac(6')-Ib-cr gene was detected in only one of 10 phenotypically resistant isolates to quinolones.
Collapse
Affiliation(s)
- Baran Celik
- Department of Microbiology, Faculty of Veterinary Medicine, Istanbul University – Cerrahpasa, Buyukcekmece/Istanbul, Turkiye
| | - Bahar Ergul
- Ambarli Veterinary Border Control Point Directorate, Republic of Turkiye Ministry of Agriculture and Forestry, Istanbul, Turkiye
| | - Ayse Ilgin Kekec
- Department of Microbiology, Faculty of Veterinary Medicine, Istanbul University – Cerrahpasa, Buyukcekmece/Istanbul, Turkiye
| | - Baris Hala
- Department of Microbiology, Faculty of Veterinary Medicine, Istanbul University – Cerrahpasa, Buyukcekmece/Istanbul, Turkiye
| | - Begum Maslak
- Institute of Graduate Studies, Istanbul University – Cerrahpasa, Avcilar/Istanbul, Turkiye
| | - Belgi Diren Sigirci
- Department of Microbiology, Faculty of Veterinary Medicine, Istanbul University – Cerrahpasa, Buyukcekmece/Istanbul, Turkiye
| | - Beren Basaran Kahraman
- Department of Microbiology, Faculty of Veterinary Medicine, Istanbul University – Cerrahpasa, Buyukcekmece/Istanbul, Turkiye
| | - Arzu Funda Bagcigil
- Department of Microbiology, Faculty of Veterinary Medicine, Istanbul University – Cerrahpasa, Buyukcekmece/Istanbul, Turkiye
| | - Kemal Metiner
- Department of Microbiology, Faculty of Veterinary Medicine, Istanbul University – Cerrahpasa, Buyukcekmece/Istanbul, Turkiye
| | - Seyyal Ak
- Department of Microbiology, Faculty of Veterinary Medicine, Istanbul University – Cerrahpasa, Buyukcekmece/Istanbul, Turkiye
| |
Collapse
|
9
|
Doğan Kaya S, Taşçı E, Kırali K. Evaluation of donor-derived bacterial infections in lung transplant recipients. Turk Gogus Kalp Damar Cerrahisi Derg 2023; 31:269-274. [PMID: 37484630 PMCID: PMC10357864 DOI: 10.5606/tgkdc.dergisi.2023.23489] [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] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 05/14/2022] [Indexed: 07/25/2023]
Abstract
Background This study aims to evaluate the etiology and outcomes of donor-derived bacterial infections in patients undergoing lung transplantation. Methods Between January 2013 and December 2017, a total of 71 lung transplant recipients (56 males, 15 females; median age: 43.3 years) were retrospectively analyzed. The diagnosis of donor-derived bacterial infection was defined as the isolation of the same bacteria with the same antibiotic susceptibility patterns in a lung sample of donor and in one sample obtained from patients after transplantation and the presence of clinical evidence of infection. Results Ten (14%) patients were found to have donor-derived bacterial infection. Acinetobacter baumannii was found in three, Pseudomonas aeruginosa in three, Klebsiella pneumoniae in one, Enterobacter cloacae in one, Staphylococcus aureus in one, and both Klebsiella pneumoniae and Acinetobacter baumannii in one patient. Twenty-four of lung-transplant recipients and four patients with donor-derived infection died. Conclusion Lung transplants are usually performed in hospitalized patients or in those admitted to the intensive care unit. These patients commonly experience infection and colonization with resistant microorganisms.
Collapse
Affiliation(s)
- Sibel Doğan Kaya
- Department of Infectious Diseases and Clinical Microbiology, Koşuyolu High Specialization Training and Research Hospital, Istanbul, Türkiye
| | - Erdal Taşçı
- Department of Infectious Diseases and Clinical Microbiology, Koşuyolu High Specialization Training and Research Hospital, Istanbul, Türkiye
| | - Kaan Kırali
- Department of Infectious Diseases and Clinical Microbiology, Koşuyolu High Specialization Training and Research Hospital, Istanbul, Türkiye
| |
Collapse
|
10
|
Shinde SS, Ahmed S, Malik JA, Hani U, Khanam A, Ashraf Bhat F, Ahmad Mir S, Ghazwani M, Wahab S, Haider N, Almehizia AA. Therapeutic Delivery of Tumor Suppressor miRNAs for Breast Cancer Treatment. Biology (Basel) 2023; 12:biology12030467. [PMID: 36979159 PMCID: PMC10045434 DOI: 10.3390/biology12030467] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/10/2023] [Accepted: 03/16/2023] [Indexed: 03/30/2023]
Abstract
The death rate from breast cancer (BC) has dropped due to early detection and sophisticated therapeutic options, yet drug resistance and relapse remain barriers to effective, systematic treatment. Multiple mechanisms underlying miRNAs appear crucial in practically every aspect of cancer progression, including carcinogenesis, metastasis, and drug resistance, as evidenced by the elucidation of drug resistance. Non-coding RNAs called microRNAs (miRNAs) attach to complementary messenger RNAs and degrade them to inhibit the expression and translation to proteins. Evidence suggests that miRNAs play a vital role in developing numerous diseases, including cancer. They affect genes critical for cellular differentiation, proliferation, apoptosis, and metabolism. Recently studies have demonstrated that miRNAs serve as valuable biomarkers for BC. The contrast in the expression of miRNAs in normal tissue cells and tumors suggest that miRNAs are involved in breast cancer. The important aspect behind cancer etiology is the deregulation of miRNAs that can specifically influence cellular physiology. The main objective of this review is to emphasize the role and therapeutic capacity of tumor suppressor miRNAs in BC and the advancement in the delivery system that can deliver miRNAs specifically to cancerous cells. Various approaches are used to deliver these miRNAs to the cancer cells with the help of carrier molecules, like nanoparticles, poly D, L-lactic-co-glycolic acid (PLGA) particles, PEI polymers, modified extracellular vesicles, dendrimers, and liposomes. Additionally, we discuss advanced strategies of TS miRNA delivery techniques such as viral delivery, self-assembled RNA-triple-helix hydrogel drug delivery systems, and hyaluronic acid/protamine sulfate inter-polyelectrolyte complexes. Subsequently, we discuss challenges and prospects on TS miRNA therapeutic delivery in BC management so that miRNAs will become a routine technique in developing individualized patient profiles.
Collapse
Affiliation(s)
- Sonali S Shinde
- Department of Chemical Technology, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431004, India
| | - Sakeel Ahmed
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Ahmedabad 382355, India
| | - Jonaid Ahmad Malik
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Guwahati 781101, India
- Department of Biomedical Engineering, Indian Institute of Technology, Rupnagar 140001, India
| | - Umme Hani
- Department of Pharmaceutics, College of Pharmacy, King Khalid University, Abha 62529, Saudi Arabia
| | - Afreen Khanam
- Department of Pharmacognosy and Phytochemistry, Jamia Hamdard, New Delhi 110062, India
| | | | - Suhail Ahmad Mir
- Department of Pharmaceutical Sciences, University of Kashmir, Jammu and Kashmir, Hazratbal, Srinagar 190006, India
| | - Mohammed Ghazwani
- Department of Pharmaceutics, College of Pharmacy, King Khalid University, Abha 62529, Saudi Arabia
| | - Shadma Wahab
- Department of Pharmacognosy, College of Pharmacy, King Khalid University, Abha 62529, Saudi Arabia
| | - Nazima Haider
- Department of Pathology, College of Medicine, King Khalid University, Abha 62529, Saudi Arabia
| | - Abdulrahman A Almehizia
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| |
Collapse
|
11
|
Gedye K, Poole-Crowe E, Shepherd M, Wilding A, Parton K, Lopez-Villalobos N, Cave N. Prevalence of the ABCB1-1Δ gene mutation in a sample of New Zealand Huntaway dogs. N Z Vet J 2023; 71:133-136. [PMID: 36786530 DOI: 10.1080/00480169.2023.2181238] [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: 02/15/2023]
Abstract
AIMS To determine the prevalence of the ATP Binding Cassette Subfamily B Member 1-1Δ mutation (ABCB1-1Δ; previously Multidrug Resistance 1 (MDR1) mutation) in a cohort of New Zealand Huntaway dogs. MATERIALS AND METHODS Samples were opportunistically collected from Huntaway dogs (n = 189) from throughout New Zealand. Buccal swabs were collected from 42 Huntaways from the Wairarapa region and 147 blood samples from Huntaways from the Gisborne, Waikato, Manawatū/Whanganui, Hawkes Bay, Canterbury and Otago regions. DNA was extracted from all samples and tested for the presence of the ABCB1-1Δ allele. RESULTS Of 189 Huntaway dogs that were tested, two were found to be heterozygous carriers of the ABCB1-1Δ allele and the remaining 187/189 dogs were homozygous for the wild type allele. No dogs homozygous for the mutation were identified. CONCLUSIONS AND CLINICAL RELEVANCE The results of this study show that the ABCB1-1Δ allele is present in Huntaway dogs. The low prevalence in this convenience sample suggests that the prevalence of this allele in the Huntaway population is likely to be low. We recommend that veterinary clinicians discuss the potential for this mutation in Huntaways with dog owners including the clinical implications for dogs that are homozygous for the mutated allele and the potential for testing for the mutation, as they would do for other known mutations.
Collapse
Affiliation(s)
- K Gedye
- Tāwharau Ora - School of Veterinary Science, Massey University, Palmerston North, New Zealand
| | | | | | | | - K Parton
- Tāwharau Ora - School of Veterinary Science, Massey University, Palmerston North, New Zealand
| | - N Lopez-Villalobos
- School of Agriculture and the Environment, Massey University, Palmerston North, New Zealand
| | - N Cave
- Tāwharau Ora - School of Veterinary Science, Massey University, Palmerston North, New Zealand
| |
Collapse
|
12
|
Xiao S, Guo L, Ai C, Shang M, Shi D, Meng D, Sun X, Wang X, Liu R, Zhao Y, Li J. pH-/Redox-Responsive Nanodroplet Combined with Ultrasound-Targeted Microbubble Destruction for the Targeted Treatment of Drug-Resistant Triple Negative Breast Cancer. ACS Appl Mater Interfaces 2023; 15:8958-8973. [PMID: 36757913 DOI: 10.1021/acsami.2c20478] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Multiple drug resistance (MDR) exists in divergent cancers including triple negative breast cancer (TNBC) and partly results in the resistance to many first-line anti-cancer agents, bringing a big challenge to TNBC management. To develop novel TNBC therapeutics, in our study, a hyaluronic acid (HA)-carboxymethyl chitosan (CMC) conjugate linked via a disulfide-bond (HA-SS-CMC, HSC) was synthesized to fabricate nanodroplets (NDs). The NDs encapsulating doxorubicin (DOX) and perfluorohexane (DOX-HSC-NDs) were prepared via a homogenization/emulsification strategy and exhibited not only high biocompatibility but also noticeable tumor cell targeting ability and dual pH/redox responsiveness. Besides, DOX-HSC-NDs can be used as a contrast-enhanced ultrasound imaging agent for specific tumor imaging. DOX-HSC-NDs in combination with ultrasound targeted microbubble destruction could improve intracellular drug aggregation and retention of MDR cells and work against multiple mechanisms of drug resistance through synergistic strategies, including up-regulating the reactive oxygen species (ROS) level, promoting apoptosis, and scavenging glutathione, while reducing the expression levels of P-glycoprotein and inhibiting the epithelial-mesenchymal transition. This combination strategy showed protective effects against TNBC in both MDA-MB-231/ADR cells and tumor-bearing mice. Our study for the first time developed and reported the ultrasound-augmented HSC-NDs as the DOX nanocarrier and provided scientific evidence to support the future application of DOX-HSC-NDs as a potential TNBC therapy.
Collapse
Affiliation(s)
- Shan Xiao
- Department of Ultrasound, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
| | - Lu Guo
- Department of Ultrasound, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
| | - Chen Ai
- Department of Ultrasound, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
| | - Mengmeng Shang
- Department of Ultrasound, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
| | - Dandan Shi
- Department of Ultrasound, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
| | - Dong Meng
- Department of Ultrasound, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
| | - Xiao Sun
- Department of Ultrasound, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
| | - Xiaoxuan Wang
- Department of Ultrasound, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
| | - Rui Liu
- Department of Ultrasound, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
| | - Yading Zhao
- Department of Ultrasound, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
| | - Jie Li
- Department of Ultrasound, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
| |
Collapse
|
13
|
Vacaroiu IA, Cuiban E, Geavlete BF, Gheorghita V, David C, Ene CV, Bulai C, Lupusoru GE, Lupusoru M, Balcangiu-Stroescu AE, Feier LF, Simion IS, Radulescu D. Chronic Kidney Disease-An Underestimated Risk Factor for Antimicrobial Resistance in Patients with Urinary Tract Infections. Biomedicines 2022; 10. [PMID: 36289631 DOI: 10.3390/biomedicines10102368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 08/31/2022] [Revised: 09/18/2022] [Accepted: 09/19/2022] [Indexed: 11/21/2022] Open
Abstract
(1) Background: Chronic kidney disease (CKD), as well as antimicrobial resistance (AMR) represent major global health problems, with important social and economic implications. It was reported that CKD is a risk factor for antimicrobial resistance, but evidence is scarce. In addition, CKD is recognized to be a risk factor for complicated urinary tract infections (UTIs). (2) Methods: We conducted an observational study on 564 adult in-hospital patients diagnosed with urinary tract infections. The aim of the study was to identify the risk factors for AMR, as well as multiple drug resistance (MDR) and the implicated resistance patterns. (3) Results: The mean age was 68.63 ± 17.2 years. The most frequently isolated uropathogens were Escherichia coli strains (68.3%) followed by Klebsiella species (spp. (11.2%). In 307 cases (54.4%)), the UTIs were determined by antibiotic-resistant bacteria (ARBs) and 169 cases (30%) were UTIs with MDR strains. Increased age (≥65) OR 2.156 (95% CI: 1.404−3.311), upper urinary tract obstruction OR 1.666 (1.083−2.564), indwelling urinary catheters OR 6.066 (3.919−9.390), chronic kidney disease OR 2.696 (1.832−3.969), chronic hemodialysis OR 4.955 (1.828−13.435) and active malignancies OR 1.962 (1.087−3.540) were independent risk factors for MDR UTIs. In a multivariate logistic regression model, only indwelling urinary catheters (OR 5.388, 95% CI: 3.294−8.814, p < 0.001), CKD (OR 1.779, 95% CI: 1.153−2.745, p = 0.009) and chronic hemodialysis (OR 4.068, 95% 1.413−11.715, p = 0.009) were risk factors for UTIs caused by MDR uropathogens. (4) Conclusions: CKD is an important risk factor for overall antimicrobial resistance, but also for multiple-drug resistance.
Collapse
|
14
|
Alhomayani FK, Alazwari NM, Alshhrani MS, Alkhudaydi AS, Basaba AS, Alharthi TM, Alghamdi MM, Aljuaid AS, Alosimi NM, Alqethami AM. The prevalence of multiple drug resistant urinary tract infections: A single-centered, observational retrospective study in King Abdulaziz Specialized Hospital, Taif, Saudi Arabia. Saudi Med J 2022; 43:927-932. [PMID: 35964957 PMCID: PMC9749674 DOI: 10.15537/smj.2022.43.8.20220238] [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: 04/05/2022] [Accepted: 07/05/2022] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVES To determine the prevalence and patterns of antibiotic resistance, risk factors, and appropriate empiric therapy for multidrug-resistant Enterococcus (MDRE) urinary tract infections (UTIs) at King Abdulaziz Specialist Hospital (KAASH), Taif, Saudi Arabia. METHODS All patients attending KAASH with MDRE UTIs between January 2018 and December 2020 were enrolled in the study. After ethical approval, data were analyzed. RESULTS The most common causative organisms were Gram-negative and anaerobes, and the most sensitive antibiotics were ciprofloxacin and ceftriaxone. CONCLUSION Based on our analyses, regular culture and sensitivity should be made routine to gather information regarding susceptibility patterns, thereby reducing drug resistance in our setups.
Collapse
Affiliation(s)
- Faisal K. Alhomayani
- From the Department of Nephrology and Kidney Transplant (Alhomayani); from the Department of Internal Medicine (Aljuaid, Alqethami), College of Medicine, Taif University; and from the Department of Internal Medicine (Alazwari, Alshhrani, Alkhudaydi, Basaba, Alharthi, Alghamdi, Alosimi), King Abdulaziz Specialist Hospital, Taif, Kingdom of Saudi Arabia
| | - Naif M. Alazwari
- From the Department of Nephrology and Kidney Transplant (Alhomayani); from the Department of Internal Medicine (Aljuaid, Alqethami), College of Medicine, Taif University; and from the Department of Internal Medicine (Alazwari, Alshhrani, Alkhudaydi, Basaba, Alharthi, Alghamdi, Alosimi), King Abdulaziz Specialist Hospital, Taif, Kingdom of Saudi Arabia
- Address correspondence and reprint request to: Dr. Naif M. Alazwari, Internal Medicine Department, King Abdul Aziz Specialist Hospital, Taif, Kingdom of Saudi Arabia. E-mail: ORCID ID: https://orcid.org/0000-0002-1140-5842
| | - Mohammed S. Alshhrani
- From the Department of Nephrology and Kidney Transplant (Alhomayani); from the Department of Internal Medicine (Aljuaid, Alqethami), College of Medicine, Taif University; and from the Department of Internal Medicine (Alazwari, Alshhrani, Alkhudaydi, Basaba, Alharthi, Alghamdi, Alosimi), King Abdulaziz Specialist Hospital, Taif, Kingdom of Saudi Arabia
| | - Ali S. Alkhudaydi
- From the Department of Nephrology and Kidney Transplant (Alhomayani); from the Department of Internal Medicine (Aljuaid, Alqethami), College of Medicine, Taif University; and from the Department of Internal Medicine (Alazwari, Alshhrani, Alkhudaydi, Basaba, Alharthi, Alghamdi, Alosimi), King Abdulaziz Specialist Hospital, Taif, Kingdom of Saudi Arabia
| | - Abdullah S. Basaba
- From the Department of Nephrology and Kidney Transplant (Alhomayani); from the Department of Internal Medicine (Aljuaid, Alqethami), College of Medicine, Taif University; and from the Department of Internal Medicine (Alazwari, Alshhrani, Alkhudaydi, Basaba, Alharthi, Alghamdi, Alosimi), King Abdulaziz Specialist Hospital, Taif, Kingdom of Saudi Arabia
| | - Tariq M. Alharthi
- From the Department of Nephrology and Kidney Transplant (Alhomayani); from the Department of Internal Medicine (Aljuaid, Alqethami), College of Medicine, Taif University; and from the Department of Internal Medicine (Alazwari, Alshhrani, Alkhudaydi, Basaba, Alharthi, Alghamdi, Alosimi), King Abdulaziz Specialist Hospital, Taif, Kingdom of Saudi Arabia
| | - Muhanad M. Alghamdi
- From the Department of Nephrology and Kidney Transplant (Alhomayani); from the Department of Internal Medicine (Aljuaid, Alqethami), College of Medicine, Taif University; and from the Department of Internal Medicine (Alazwari, Alshhrani, Alkhudaydi, Basaba, Alharthi, Alghamdi, Alosimi), King Abdulaziz Specialist Hospital, Taif, Kingdom of Saudi Arabia
| | - Abdulaziz S. Aljuaid
- From the Department of Nephrology and Kidney Transplant (Alhomayani); from the Department of Internal Medicine (Aljuaid, Alqethami), College of Medicine, Taif University; and from the Department of Internal Medicine (Alazwari, Alshhrani, Alkhudaydi, Basaba, Alharthi, Alghamdi, Alosimi), King Abdulaziz Specialist Hospital, Taif, Kingdom of Saudi Arabia
| | - Nasser M. Alosimi
- From the Department of Nephrology and Kidney Transplant (Alhomayani); from the Department of Internal Medicine (Aljuaid, Alqethami), College of Medicine, Taif University; and from the Department of Internal Medicine (Alazwari, Alshhrani, Alkhudaydi, Basaba, Alharthi, Alghamdi, Alosimi), King Abdulaziz Specialist Hospital, Taif, Kingdom of Saudi Arabia
| | - Abdulmajeed M. Alqethami
- From the Department of Nephrology and Kidney Transplant (Alhomayani); from the Department of Internal Medicine (Aljuaid, Alqethami), College of Medicine, Taif University; and from the Department of Internal Medicine (Alazwari, Alshhrani, Alkhudaydi, Basaba, Alharthi, Alghamdi, Alosimi), King Abdulaziz Specialist Hospital, Taif, Kingdom of Saudi Arabia
| |
Collapse
|
15
|
Katekar R, Singh P, Garg R, Verma S, Gayen JR. Emerging nanotechnology based combination therapies of taxanes for multiple drug-resistant cancers. Pharm Dev Technol 2021; 27:95-107. [PMID: 34806547 DOI: 10.1080/10837450.2021.2009861] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
'One drug- one target' to 'multiple drug- multiple targets' paradigm shifted to produce combination therapies, have found great outcomes to overcome multiple drug resistance (MDR). MDR is a significant barrier to the delivery of taxane-based anticancer medicines such as docetaxel, paclitaxel, and cabazitaxel. Due to MDR induced by drug efflux transporters, clinical application of these medications is impeded. To date, nanoformulations such as liposomes, micelles, polymeric nanoparticles, and gold nanoparticles have been investigated to deliver taxanes alone and in combination to reverse drug resistance. Despite the fact that various groups have already looked into taxane nano formulations in the literature, there isn't much in the way of polypharmacology and advanced nanoformulations with a focus on MDR. In this overview, we briefly covered the insights regarding MDR, difficulties related to current pharmaceutical products of taxanes, combination therapies of taxanes to combat MDR, all of which can be used to delve into cancer treatment.
Collapse
Affiliation(s)
- Roshan Katekar
- Pharmaceutics & Pharmacokinetics Division, CSIR-Central Drug Research Institute, Lucknow, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Pragati Singh
- Pharmaceutics & Pharmacokinetics Division, CSIR-Central Drug Research Institute, Lucknow, India
| | - Richa Garg
- Pharmaceutics & Pharmacokinetics Division, CSIR-Central Drug Research Institute, Lucknow, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Saurabh Verma
- Pharmaceutics & Pharmacokinetics Division, CSIR-Central Drug Research Institute, Lucknow, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Jiaur R Gayen
- Pharmaceutics & Pharmacokinetics Division, CSIR-Central Drug Research Institute, Lucknow, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India.,Pharmacology Division, CSIR-Central Drug Research Institute, Lucknow, India
| |
Collapse
|
16
|
Kim JS, Yu JK, Jeon SJ, Park SH, Han S, Park SH, Kang M, Jang JI, Park J, Shin EK, Kim J, Hong CK, Lee JH, Hwang YO, Oh YH. Dissemination of an international high-risk clone of Escherichia coli ST410 co-producing NDM-5 and OXA-181 carbapenemases in Seoul, Republic of Korea. Int J Antimicrob Agents 2021; 58:106448. [PMID: 34648943 DOI: 10.1016/j.ijantimicag.2021.106448] [Citation(s) in RCA: 10] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 09/24/2021] [Accepted: 10/02/2021] [Indexed: 11/24/2022]
Abstract
The rapid increase in carbapenemase-producing Enterobacterales is a global health concern. During 2017-2020, a total of 44 Escherichia coli isolates co-harbouring blaNDM-5 and blaOXA-181 were collected from patients at 17 hospitals in Seoul and characterized based on antimicrobial susceptibility, resistance genes and plasmid replicons detected using polymerase chain reaction (PCR). Clonal relatedness was estimated using pulsed-field gel electrophoresis (PFGE) and multilocus sequence typing (MLST). All isolates had an identical multidrug resistance profile, including resistance to carbapenems, cephalosporins, ciprofloxacin, tetracycline, and trimethoprim/sulfamethoxazole, and susceptibility to amikacin, colistin, and tigecycline. Resistance genes (blaCTX-M-15, blaCMY-2, blaTEM-1B, blaOXA-1, aac(6')-Ib-cr, and qnrS) and plasmid replicons (IncFIA, IncFIB, and IncX3) was observed in almost all isolates. All isolates belonged to ST410 and were genetically similar (>88% similarity), with some PFGE types shared among isolates from different hospitals. Analysis of the whole genome revealed that the isolates clustered together with other strains of the international high-risk clone ST410 B4/H24RxC from other countries. These findings underline the ongoing spread of the high-risk clone of NDM-5- and OXA-181-producing E. coli ST410 B4/H24RxC among hospitals in Seoul. Continuous monitoring and implementation of infection control measures are crucial to track and prevent further spread of these resistant strains.
Collapse
Affiliation(s)
- Jin Seok Kim
- Bacteria Team, Seoul Metropolitan Government Research Institute of Public Health and Environment, Gyeonggi-do, Republic of Korea.
| | - Jin Kyung Yu
- Bacteria Team, Seoul Metropolitan Government Research Institute of Public Health and Environment, Gyeonggi-do, Republic of Korea
| | - Su Jin Jeon
- Bacteria Team, Seoul Metropolitan Government Research Institute of Public Health and Environment, Gyeonggi-do, Republic of Korea
| | - Sang-Hun Park
- Bacteria Team, Seoul Metropolitan Government Research Institute of Public Health and Environment, Gyeonggi-do, Republic of Korea
| | - Sunghee Han
- Bacteria Team, Seoul Metropolitan Government Research Institute of Public Health and Environment, Gyeonggi-do, Republic of Korea
| | - So Hyeon Park
- Bacteria Team, Seoul Metropolitan Government Research Institute of Public Health and Environment, Gyeonggi-do, Republic of Korea
| | - Minji Kang
- Bacteria Team, Seoul Metropolitan Government Research Institute of Public Health and Environment, Gyeonggi-do, Republic of Korea
| | - Jung Im Jang
- Bacteria Team, Seoul Metropolitan Government Research Institute of Public Health and Environment, Gyeonggi-do, Republic of Korea
| | - Jungsun Park
- Division of Bacterial Diseases, Korea Diseases Control and Prevention Agency, Chungcheongbuk-do, Republic of Korea
| | - Eun-Kyung Shin
- Division of Bacterial Diseases, Korea Diseases Control and Prevention Agency, Chungcheongbuk-do, Republic of Korea
| | - Junyoung Kim
- Division of Bacterial Diseases, Korea Diseases Control and Prevention Agency, Chungcheongbuk-do, Republic of Korea
| | - Chae-Kyu Hong
- Bacteria Team, Seoul Metropolitan Government Research Institute of Public Health and Environment, Gyeonggi-do, Republic of Korea
| | - Jib-Ho Lee
- Bacteria Team, Seoul Metropolitan Government Research Institute of Public Health and Environment, Gyeonggi-do, Republic of Korea
| | - Young Ok Hwang
- Bacteria Team, Seoul Metropolitan Government Research Institute of Public Health and Environment, Gyeonggi-do, Republic of Korea
| | - Young-Hee Oh
- Bacteria Team, Seoul Metropolitan Government Research Institute of Public Health and Environment, Gyeonggi-do, Republic of Korea
| |
Collapse
|
17
|
Savinova OS, Glazunova OA, Moiseenko KV, Begunova AV, Rozhkova IV, Fedorova TV. Exoproteome Analysis of Antagonistic Interactions between the Probiotic Bacteria Limosilactobacillus reuteri LR1 and Lacticaseibacillus rhamnosus F and Multidrug Resistant Strain of Klebsiella pneumonia. Int J Mol Sci 2021; 22:10999. [PMID: 34681658 DOI: 10.3390/ijms222010999] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 09/16/2021] [Revised: 10/06/2021] [Accepted: 10/08/2021] [Indexed: 12/21/2022] Open
Abstract
The expansion of multiple drug resistant (MDR) strains of Klebsiella pneumoniae presents an immense threat for public health. Annually, this microorganism causes thousands of lethal nosocomial infections worldwide. Currently, it has been shown that certain strains of lactic acid bacteria (LAB) can efficiently inhibit growth of K. pneumoniae and the formation of its biofilms; however, the active principle of such action remains unknown. In the current article, the growth inhibition of MDR K. pneumoniae by two LAB—Limosilactobacillus reuteri LR1 and Lacticaseibacillus rhamnosus F—is demonstrated, and the nature of this inhibition studied at the level of exoproteome. This article shows that the exoproteomes of studied LAB contains both classically and non-classically secreted proteins. While for L. reuteri LR1 the substantial portion of classically secreted proteins was presented by cell-wall-degrading enzymes, for L. rhamnosus F only one out of four classically secreted proteins was presented by cell-wall hydrolase. Non-classically secreted proteins of both LAB were primarily metabolic enzymes, for some of which a possible moonlighting functioning was proposed. These results contribute to knowledge regarding antagonistic interaction between LAB and pathogenic and opportunistic microorganisms and set new perspectives for the use of LAB to control the spread of these microorganisms.
Collapse
|
18
|
Karn M, Bhargava D, Dhungel B, Banjara MR, Rijal KR, Ghimire P. The burden and characteristics of nosocomial infections in an intensive care unit: A cross-sectional study of clinical and nonclinical samples at a tertiary hospital of Nepal. Int J Crit Illn Inj Sci 2021; 11:236-245. [PMID: 35070914 PMCID: PMC8725804 DOI: 10.4103/ijciis.ijciis_7_21] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 01/15/2021] [Revised: 08/02/2021] [Accepted: 08/06/2021] [Indexed: 11/04/2022] Open
Abstract
Background Patients at intensive care units (ICUs) are vulnerable to acquiring nosocomial infections. The main objective of this study was to explore and characterize the burden of nosocomial infections from an ICU of National Medical College and Teaching Hospital (NMCTH), Birgunj, Nepal. Methods A prospective hospital-based study was conducted between April and December 2018 at NMCTH, Birgunj, Province 2, of Nepal. A total of 374 specimens including clinical specimens (n = 190) from patients admitted in an ICU and animate and inanimate environmental samples (n = 184) from the ICU were collected. Collected specimens were cultured in specific microbiological media, and microbial isolates were identified and subjected to antibiotic susceptibility test. Results Altogether, 374 specimens (190 clinical specimens and 184 nonclinical) of an ICU were analyzed. Out of 190 clinical specimens, 51% (97/190) showed bacterial growth. Isolated bacteria were Staphylococcus aureus (33%; 32/97), Escherichia coli (20.6%; 20/97), Klebsiella spp. (15.5%; 15/97), Pseudomonas spp. (11.3%; 11/97), and Acinetobacter spp. (11.3%; 11/97). Out of 184 nonclinical specimens, 51.6% (95/184) of the samples showed microbial growth. Among the isolates, Klebsiella spp. predominated (30.6%; 26/85) the growth, followed by S. aureus (22.4%; 19/85), Acinetobacter spp. (21.2%; 18/85), and Pseudomonas spp. (17.6%; 15/85). Among all clinical and nonclinical isolates, 61.9% (60/97) of the clinical specimens and 65.9% (56/85) of the nonclinical specimens showed multidrug resistance (MDR). Conclusion Two-thirds of the specimens from both clinical and nonclinical specimens showed MDR. Urgent actions are required to address the augmented rate of nosocomial infections and MDR bacteria among ICUs in Nepal.
Collapse
Affiliation(s)
- Manisha Karn
- Department of Microbiology, Central Tribhuvan University, Kirtipur, Kathmandu, Nepal
| | - Dipak Bhargava
- National Medical College & Teaching Hospital, Birgunj, Nepal
| | - Binod Dhungel
- Department of Microbiology, Central Tribhuvan University, Kirtipur, Kathmandu, Nepal
| | - Megha Raj Banjara
- Department of Microbiology, Central Tribhuvan University, Kirtipur, Kathmandu, Nepal
| | - Komal Raj Rijal
- Department of Microbiology, Central Tribhuvan University, Kirtipur, Kathmandu, Nepal
| | - Prakash Ghimire
- Department of Microbiology, Central Tribhuvan University, Kirtipur, Kathmandu, Nepal
| |
Collapse
|
19
|
Adewoyin MA, Ebomah KE, Okoh AI. Antibiogram Profile of Acinetobacterbaumannii Recovered from Selected Freshwater Resources in the Eastern Cape Province, South Africa. Pathogens 2021; 10:pathogens10091110. [PMID: 34578143 PMCID: PMC8466806 DOI: 10.3390/pathogens10091110] [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: 05/11/2021] [Revised: 07/04/2021] [Accepted: 07/16/2021] [Indexed: 11/25/2022] Open
Abstract
Acinetobacter species have been found in a variety of environments, including soil, food, plants, hospital environments and water. Acinetobacter baumannii is an opportunistic and emerging waterborne pathogen. It has been implicated in several nosocomial infections that demonstrate resistance to commonly administered antibiotics. We investigated phenotypic antibiotic resistance (PAR) and relevant antibiotic resistance genes (ARGs) in A. baumannii isolated from three freshwater resources in the Eastern Cape Province, South Africa; A. baumannii (410) was confirmed by the recA and gyrB genes of 844 suspected Acinetobacter species in the water samples. The PAR of the confirmed isolates was assessed using a panel of 11 antibiotics by the disc diffusion method, while ARGs were investigated in isolates exhibiting PAR. The A. baumannii isolates were resistant to piperacillin-tazobactam (11.2%), ceftazidime (12%), cefotaxime (18.8%), cefepime (8.8%), imipenem (2.7%), meropenem (4.15%), amikacin (2.4%), gentamicin (8.8%), tetracycline (16.8%), ciprofloxacin (11%) and trimethoprim/sulfamethoxazole (20.5%). For multidrug resistance (MDR), two isolates were resistant to all antibiotics and 28 isolates were resistant to imipenem and meropenem. Moreover, β-lactamases blaTEM (64.4%) and blaOXA-51 (28.70%) as well as sulphonamides sul1 (37.1%) and sul2 (49.4%) were common ARGs. Overall, PAR and ARGs had positive correlations (r) in all rivers. Detection of MDR-A. baumannii in freshwater resources could be linked to possible wastewater discharge from the nearby animal farms, indicating potential implications for public health.
Collapse
Affiliation(s)
- Mary Ayobami Adewoyin
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice 5700, South Africa; (K.E.E.); (A.I.O.)
- Applied and Environmental Microbiology Research Group, Department of Biochemistry and Microbiology, University of Fort Hare, Alice 5700, South Africa
- Correspondence: ; Tel.: +27-730-809-512
| | - Kingsley Ehi Ebomah
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice 5700, South Africa; (K.E.E.); (A.I.O.)
- Applied and Environmental Microbiology Research Group, Department of Biochemistry and Microbiology, University of Fort Hare, Alice 5700, South Africa
| | - Anthony Ifeanyi Okoh
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice 5700, South Africa; (K.E.E.); (A.I.O.)
- Applied and Environmental Microbiology Research Group, Department of Biochemistry and Microbiology, University of Fort Hare, Alice 5700, South Africa
- Department of Environmental Health Sciences, College of Health Sciences, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates
| |
Collapse
|
20
|
Pandey A, Devkota A, Yadegari Z, Dumenyo K, Taheri A. Antibacterial Properties of Citric Acid/β-Alanine Carbon Dots against Gram-Negative Bacteria. Nanomaterials (Basel) 2021; 11:2012. [PMID: 34443843 PMCID: PMC8400432 DOI: 10.3390/nano11082012] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 07/27/2021] [Accepted: 07/31/2021] [Indexed: 11/30/2022]
Abstract
While multi-drug resistance in bacteria is an emerging concern in public health, using carbon dots (CDs) as a new source of antimicrobial activity is gaining popularity due to their antimicrobial and non-toxic properties. Here we prepared carbon dots from citric acid and β-alanine and demonstrated their ability to inhibit the growth of diverse groups of Gram-negative bacteria, including E. coli, Salmonella, Pseudomonas, Agrobacterium, and Pectobacterium species. Carbon dots were prepared using a one-pot, three-minute synthesis process in a commercial microwave oven (700 W). The antibacterial activity of these CDs was studied using the well-diffusion method, and their minimal inhibitory concentration was determined by exposing bacterial cells for 20 h to different concentrations of CDs ranging from 0.5 to 10 mg/mL. Our finding indicates that these CDs can be an effective alternative to commercially available antibiotics. We also demonstrated the minimum incubation time required for complete inhibition of bacterial growth, which varied depending on bacterial species. With 15-min incubation time, A. tumefaciens and P. aeruginosa were the most sensitive strains, whereas E. coli and S. enterica were the most resistant bacterial strains requiring over 20 h incubation with CDs.
Collapse
Affiliation(s)
- Anju Pandey
- Department of Agricultural and Environmental Sciences, College of Agriculture, Tennessee State University, 3500 John A Merritt Blvd, Nashville, TN 37209, USA; (A.P.); (A.D.); (K.D.)
| | - Asmita Devkota
- Department of Agricultural and Environmental Sciences, College of Agriculture, Tennessee State University, 3500 John A Merritt Blvd, Nashville, TN 37209, USA; (A.P.); (A.D.); (K.D.)
| | - Zeinab Yadegari
- Department of Life and Physical Sciences, Fisk University, 1000 17th Ave N, Nashville, TN 37208, USA;
| | - Korsi Dumenyo
- Department of Agricultural and Environmental Sciences, College of Agriculture, Tennessee State University, 3500 John A Merritt Blvd, Nashville, TN 37209, USA; (A.P.); (A.D.); (K.D.)
| | - Ali Taheri
- Department of Agricultural and Environmental Sciences, College of Agriculture, Tennessee State University, 3500 John A Merritt Blvd, Nashville, TN 37209, USA; (A.P.); (A.D.); (K.D.)
| |
Collapse
|
21
|
Zhi Y, Gao L, Wang B, Ren W, Liang KX, Zhi K. Ferroptosis Holds Novel Promise in Treatment of Cancer Mediated by Non-coding RNAs. Front Cell Dev Biol 2021; 9:686906. [PMID: 34235152 PMCID: PMC8255676 DOI: 10.3389/fcell.2021.686906] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Accepted: 05/21/2021] [Indexed: 12/17/2022] Open
Abstract
Ferroptosis is a newly identified form of regulated cell death that is associated with iron metabolism and oxidative stress. As a physiological mechanism, ferroptosis selectively removes cancer cells by regulating the expression of vital chemical molecules. Current findings on regulation of ferroptosis have largely focused on the function of non-coding RNAs (ncRNAs), especially microRNAs (miRNAs), in mediating ferroptotic cell death, while the sponging effect of circular RNAs (circRNAs) has not been widely studied. In this review, we discuss the molecular regulation of ferroptosis and highlight the value of circRNAs in controlling ferroptosis and carcinogenesis. Herein, we deliberate future role of this emerging form of regulated cell death in cancer therapeutics and predict the progression and prognosis of oncogenesis in future clinical therapy.
Collapse
Affiliation(s)
- Yuan Zhi
- Department of Oral and Maxillofacial Surgery, The Second Xiangya Hospital, Central South University, Changsha, China.,Xiangya School of Stomatology, Central South University, Changsha, China
| | - Ling Gao
- Department of Oral and Maxillofacial Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China.,Key Lab of Oral Clinical Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Baisheng Wang
- Department of Oral and Maxillofacial Surgery, Xiangya Stomatological Hospital and School of Stomatology, Central South University, Changsha, China
| | - Wenhao Ren
- Department of Oral and Maxillofacial Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China.,Key Lab of Oral Clinical Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Kristina Xiao Liang
- Neuro-SysMed, Center of Excellence for Clinical Research in Neurological Diseases, Haukeland University Hospital, Bergen, Norway.,Department of Clinical Medicine (K1), University of Bergen, Bergen, Norway
| | - Keqian Zhi
- Department of Oral and Maxillofacial Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China.,Key Lab of Oral Clinical Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| |
Collapse
|
22
|
Zahid I, Sarwar A, Hussain A, Sohail M, Amin A. Antibiotyping and genotyping of extensively drug-resistant (XDR) Salmonella sp. isolated from clinical samples of Lahore, Pakistan. J Appl Microbiol 2021; 132:633-641. [PMID: 33969606 DOI: 10.1111/jam.15131] [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: 02/13/2021] [Revised: 04/12/2021] [Accepted: 04/30/2021] [Indexed: 11/30/2022]
Abstract
AIMS Antibiotic resistance is a major problem in Salmonella enterica serovar Typhi. The objective of this study was to evaluate the prevalence of XDR Salmonella among local population of Lahore and genotyping of isolates for antibiotic-resistant genes. METHODS AND RESULTS A total of 200 blood samples from suspected typhoid fever patients were collected. One hundred and fifty-seven bacterial samples were confirmed as Salmonella Typhi and 23 samples were confirmed as Salmonella Paratyphi after biochemical, serological and PCR based molecular characterization. Antibiogram analysis classified 121 (67·2%) Salmonella isolates as MDR and 62 isolates (34·4%) as XDR. The predominant resistance gene was ampC with 47·7% prevalence, followed by gyrA, catA1, tet(A), aac (3)-la, qnrS, blaNDM-1 and blaCTX-M-15 genes in 45·5, 40, 21·6, 18·3, 11·6, 2·2 and 0·5% isolates respectively. Sequence analysis showed the presence of sul1 and dfrA7 gene cassette arrays in 12 class 1 integron integrase positive isolates. CONCLUSION Large number of clinical XDR S. Typhi-resistant against third generation cephalosporins have been reported. SIGNIFICANCE AND IMPACT OF THE STUDY The current study highlights the possible emergence of clinical XDR S. Typhi cases in Lahore, Pakistan. Potential attribution of phenotypic and genotypic XDR cases may help to contribute targeted therapy.
Collapse
Affiliation(s)
- Iqra Zahid
- Department of Microbiology, Faculty of Life Sciences, University of Central Punjab, Lahore, Pakistan
| | - Arslan Sarwar
- Department of Microbiology, Faculty of Life Sciences, University of Central Punjab, Lahore, Pakistan
| | - Abid Hussain
- Department of Medical Lab Technology, Faculty of Rehabilitation & Allied Health Sciences, Riphah International University Islamabad, QIE Campus, Lahore, Pakistan
| | - Muhammad Sohail
- Department of Medical Lab Technology, Faculty of Rehabilitation & Allied Health Sciences, Riphah International University Islamabad, QIE Campus, Lahore, Pakistan
| | - Aatif Amin
- Department of Microbiology, Faculty of Life Sciences, University of Central Punjab, Lahore, Pakistan
| |
Collapse
|
23
|
Simon Á, Smarandache A, Iancu V, Pascu ML. Stability of Antimicrobial Drug Molecules in Different Gravitational and Radiation Conditions in View of Applications during Outer Space Missions. Molecules 2021; 26:2221. [PMID: 33921448 DOI: 10.3390/molecules26082221] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 03/27/2021] [Revised: 04/07/2021] [Accepted: 04/09/2021] [Indexed: 11/16/2022] Open
Abstract
The evolution of different antimicrobial drugs in terrestrial, microgravity and hypergravity conditions is presented within this review, in connection with their implementation during human space exploration. Drug stability is of utmost importance for applications in outer space. Instabilities may be radiation-induced or micro-/hypergravity produced. The antimicrobial agents used in space may have diminished effects not only due to the microgravity-induced weakened immune response of astronauts, but also due to the gravity and radiation-altered pathogens. In this context, the paper provides schemes and procedures to find reliable ways of fighting multiple drug resistance acquired by microorganisms. It shows that the role of multipurpose medicines modified at the molecular scale by optical methods in long-term space missions should be considered in more detail. Solutions to maintain drug stability, even in extreme environmental conditions, are also discussed, such as those that would be encountered during long-duration space exploratory missions. While the microgravity conditions may not be avoided in space, the suggested approaches deal with the radiation-induced modifications in humans, bacteria and medicines onboard, which may be fought by novel pharmaceutical formulation strategies along with radioprotective packaging and storage.
Collapse
|
24
|
Alzohairy SA, Gillett J, Saito S, Naegele RN, Xiao CL, Miles TD. Fungicide Resistance Profiles of Botrytis cinerea Isolates From Michigan Vineyards and Development of a TaqMan Assay for Detection of Fenhexamid Resistance. Plant Dis 2021; 105:285-294. [PMID: 32762329 DOI: 10.1094/pdis-05-20-1087-re] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Botrytis cinerea on grapes causes bunch rot at both pre- and postharvest stages, in which losses can reach up to 100%. Chemical control primarily relies on the prophylactic use of site-specific fungicides. Repeated applications of these products raise the risk of fungicide resistance development in B. cinerea populations, which can result in disease control failures. To determine the extent of resistance, B. cinerea isolates were collected from grape clusters in the northwest and southwest grape growing regions of Michigan in 2014 and 2018 (n = 115 and 125, respectively). These isolates were phenotyped using discriminatory doses of eight fungicides to determine the levels of resistance. Fungicide resistance increased from 2014 to 2018, mostly affecting the active ingredients fenhexamid, fluopyram, and iprodione. B. cinerea isolates resistant to multiple fungicides were detected in 2014 and 2018, with a higher frequency of resistance in 2018. TaqMan real-time PCR has been developed to detect B. cinerea fungicide resistance to fenhexamid and to differentiate the erg27 F412S/I/V alleles. The TaqMan assay was tested for sensitivity, specificity, and reproducibility on purified DNA and infected grape tissue samples. Our data provide essential information to growers about the efficacy for B. cinerea control using the available botryticides. Furthermore, the developed fenhexamid markers will be transferred to diagnostic clinics to assist growers in the management of bunch rot before resistance-related control failures occur.
Collapse
Affiliation(s)
- S A Alzohairy
- Department of Plant Soil and Microbial Sciences, Michigan State University, East Lansing, MI 48824
| | - J Gillett
- Department of Plant Soil and Microbial Sciences, Michigan State University, East Lansing, MI 48824
| | - S Saito
- San Joaquin Valley Agricultural Sciences Center, U.S. Department of Agriculture Agricultural Research Service, Parlier, CA 93649
| | - R N Naegele
- San Joaquin Valley Agricultural Sciences Center, U.S. Department of Agriculture Agricultural Research Service, Parlier, CA 93649
| | - C L Xiao
- San Joaquin Valley Agricultural Sciences Center, U.S. Department of Agriculture Agricultural Research Service, Parlier, CA 93649
| | - T D Miles
- Department of Plant Soil and Microbial Sciences, Michigan State University, East Lansing, MI 48824
| |
Collapse
|
25
|
Abstract
Nosocomial infections (NI) are common complications after cardiac surgery. To date, there have been few manuscripts investigating NI in the intensive care unit after cardiac surgery. Our study was designed to investigate the characteristics of the distribution of pathogenic bacteria, antibiotic resistance and risk factors for NI.A total of 1360 patients received standard postoperative care, including antibiotic prophylaxis. Microbiological examinations of sputum, blood, catheter tips and excrement were performed as clinically indicated to isolate pathogens. Thirty potential associated variables were collected and compared between the 2 different groups according to the development of NI using univariate and multivariate analyses.Eighty-nine patients (6.54%) acquired a microbiologically documented NI. There was a significant difference in mortality between the 2 groups with or without postoperative NI (23.60% vs 2.28%, P < .00). A total of 98 pathogens (73.13%) were isolated from sputum, 32 pathogens (23.88%) from blood and only 1 (0.75%) from urine. Three (2.24%) surgical site infections were detected, including 2 superficial surgical site infections and 1 mediastinitis. The most common pathogens were Gram-negative bacteria (78.36%), followed by Gram-positive bacteria (14.93%) and fungi (6.71%). The major pathogenic species had different levels of drug resistance, and most of them exhibited multidrug resistance. Six out of thirty variables were identified as independent risk factors for the development of NI, namely, duration of surgery, low cardiac output syndrome, continuous veno-venous hemofiltration, mechanical ventilation time, reintubation and tracheostomy.We analyzed the characteristics of the distribution of pathogens, antibiotic resistance and risk factors for NI in our center and provided some suggestions for clinical practice. In addition to antibiotic treatment, avoidance of risk factors and aggressive infection control measures may be crucial to stop or prevent outbreaks.
Collapse
|
26
|
Lan W, Zhao J, Chen W, Shang H, Peng J, Lin J. Anlotinib Overcomes Multiple Drug Resistant Colorectal Cancer Cells via Inactivating PI3K/AKT Pathway. Anticancer Agents Med Chem 2021; 21:1987-1995. [PMID: 33438566 DOI: 10.2174/1871520621666210112113852] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 09/18/2020] [Accepted: 09/25/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Anlotinib is a multi-target tyrosine kinase inhibitor that has been reported to have activity against colorectal cancer. However, the mechanisms of how anlotinib mediates drug-resistance of colorectal cancer have not been fully described. Particularly the potential mechanisms regarding to the inhibition of proliferation and induction of apoptosis remain unknown. OBJECTIVE In this study, we intended to study the effect and related-mechanism of the proliferation, migration, invasion and induced apoptosis of anlotinib overcoming multidrug resistant colorectal cancer cells through in vitro experiments. METHODS Cell viability was determined by MTT assays and the resistant index was calculated. Colony formation and PI/RNase Staining were used for testing the proliferation of resistant cells. DAPI staining and Annexin V-FITC/PI staining were used to detect cell apoptosis. Migration and invasion were examined by transwell. Protein expression and activation of PI3K/AKT pathway were detected by western blot. LY294002 was used to verify whether anlotinib overcomes the drug-resistance of CRC cells by inactivating the PI3K/AKT pathway. RESULTS The results showed that the HCT-8/5-FU cells were resistant to multiple chemotherapy drugs (5-FU, ADM and DDP). Anlotinib significantly inhibited the cell viability, proliferation, migration, invasion and induced the cell apoptosis. Moreover, anlotinib downregulated the expression of survivin, cyclin D1, CDK4, caspase-3, Bcl-2, MMP-2, MMP-9, vimentin and N-cadherin, but up-regulated cleaved-caspase-3, Bax and E-cadherin and blocked the activity of the PI3K/AKT in HCT-8/5-FU cells. We found anlotinib and LY294002 overcame the drug resistance of HCT-8/5-FU cells by reducing the expression of PI3K/p-AKT. CONCLUSIONS Anlotinib inhibited the proliferation, migration, invasion and induced apoptosis of HCT-8/5-FU cells, and the mechanisms may be that anlotinib conquered multidrug resistance of colorectal cancer cells via inactivating of PI3K/AKT pathway.
Collapse
Affiliation(s)
- Weilan Lan
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, 350122. China
| | - Jinyan Zhao
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, 350122. China
| | - Wujin Chen
- Oncology Department, Affiliated People's Hospital of Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, 350004. China
| | - Haixia Shang
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, 350122. China
| | - Jun Peng
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, 350122. China
| | - Jiumao Lin
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, 350122. China
| |
Collapse
|
27
|
Shuvalov O, Fedorova O, Tananykina E, Gnennaya Y, Daks A, Petukhov A, Barlev NA. An Arthropod Hormone, Ecdysterone, Inhibits the Growth of Breast Cancer Cells via Different Mechanisms. Front Pharmacol 2020; 11:561537. [PMID: 33192507 PMCID: PMC7663021 DOI: 10.3389/fphar.2020.561537] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 09/30/2020] [Indexed: 12/30/2022] Open
Abstract
Ecdysterone (Ecdy) is a hormone found in arthropods, which regulates their development. It is also synthesized by a number of plants to combat insect pests. It provides a number of beneficial pharmacological effects including the anabolic and adaptogenic ones. Ecdysterone is widely marketed as food supplement to enhance the physical performance of athletes. In addition to the estrogen receptor beta (ERbeta)-dependent anabolic effect of Ecdy in muscles, the molecular mechanisms of the plethora of other Ecdy-induced pharmacological effects remain unknown. The aim of this study was to investigate the pharmacological effect of ecdysterone on human breast cancer cell lines of different molecular subtypes. Surprisingly, in contrast to the anabolic effect on muscle tissues, we have revealed a tumor suppressive effect of Ecdy on a panel of breast cancer cell lines studied. Using the SeaHorse-based energy profiling, we have demonstrated that Ecdy dampened glycolysis and respiration, as well as greatly reduced the metabolic potential of triple negative breast cancer cell lines. Furthermore, we have revealed that Ecdy strongly induced autophagy. As part of the combined treatment, based on the Combination Index (CI) and Dose Reduction Index (DRI), Ecdy synergized with doxorubicin to induce cell death in several breast cancer cell lines. In contrast, Ecdy had only minor effect on non-transformed human fibroblasts. Collectively, our results indicate that ecdysterone can be considered as a new potential adjuvant for genotoxic therapy in treatment of breast cancer patients.
Collapse
Affiliation(s)
- O Shuvalov
- Institute of cytology, Russian Academy of Sciences (RAS), St-Petersburg, Russia
| | - O Fedorova
- Institute of cytology, Russian Academy of Sciences (RAS), St-Petersburg, Russia
| | - E Tananykina
- Institute of cytology, Russian Academy of Sciences (RAS), St-Petersburg, Russia
| | - Y Gnennaya
- Institute of cytology, Russian Academy of Sciences (RAS), St-Petersburg, Russia
| | - A Daks
- Institute of cytology, Russian Academy of Sciences (RAS), St-Petersburg, Russia
| | - A Petukhov
- Institute of cytology, Russian Academy of Sciences (RAS), St-Petersburg, Russia.,Almazov National Medical Research Centre, St-Petersburg, Russia
| | - N A Barlev
- Institute of cytology, Russian Academy of Sciences (RAS), St-Petersburg, Russia.,Moscow Institute of Physics and Technology, Dolgoprudny, Russia.,Orekhovich Institute of Biochemical Medicine, Moscow, Russia
| |
Collapse
|
28
|
Abstract
OBJECTIVES To investigate the clinical and drug resistance characteristics of Providencia stuartii infections in the Huainan region of Anhui and provide a reference for the clinical selection of antimicrobial agents. METHODS This single-center retrospective analysis included 76 patients with P. stuartii infection in Huainan during the period from October 2018 to March 2020. The hospital department in which the patients were treated and the drug susceptibility characteristics of the P. stuartii isolates were recorded. RESULTS Among the 76 patients, the lung was the most common site of infection, and intensive care unit was the main hospital department. Extended spectrum beta-lactamase screening revealed expression by all 76 isolates of P. stuartii. Of the 76 isolates, 92.1% exhibited multiple drug resistance or extensive drug resistance. P. stuartii isolates were sensitive to cefepime and imipenem, but not to other beta-lactam antibiotics. Twenty isolates were resistant to all 21 types of antibiotics. Of the 20 patients infected with extensively drug-resistant isolates, nine (45%) died. CONCLUSIONS Drug resistance is increasing in P. stuartii. The antimicrobial agent imipenem may be effective for treatment of P. stuartii infections. Fluoroquinolones, aminoglycosides, and fourth-generation cephalosporins are suitable options for antibiotic therapy.
Collapse
Affiliation(s)
- Jiachang Liu
- Department of Respiratory Medicine, First Affiliated Hospital of Anhui University of Science & Technology, Huainan, China
| | - Ruikai Wang
- Department of Respiratory Medicine, First Affiliated Hospital of Anhui University of Science & Technology, Huainan, China
| | - Ming Fang
- Department of Respiratory Medicine, First Affiliated Hospital of Anhui University of Science & Technology, Huainan, China
| |
Collapse
|
29
|
Sarwar A, Ahmad I, Amin A, Saleem MA. Paper currency harbours antibiotic-resistant coliform bacteria and integron integrase. J Appl Microbiol 2020; 130:1721-1729. [PMID: 32966644 DOI: 10.1111/jam.14856] [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] [Received: 07/05/2020] [Revised: 09/07/2020] [Accepted: 09/13/2020] [Indexed: 01/16/2023]
Abstract
AIMS This study was designed to analyse the prevalence of class 1 and class 2 integron integrase genes among antibiotic-resistant coliform bacteria isolated from paper currency circulating in Pakistan. METHODS AND RESULTS A total of 500 individual currency notes were collected from different food vending sites at Lahore, Pakistan. Bacterial population were identified by biochemical and PCR techniques. Antimicrobial susceptibility testing was performed by disc diffusion assay. The highest bacterial population on currency was found from street vendors and butcher shops. Escherichia coli was found to be the most prevalent coliform bacteria followed by Klebsiella sp. and Enterobacter sp. PCR amplification of antimicrobial resistance gene showed the presence of ampC, blaTEM , blaNDM-1 , qnrA, tet(A) and tet(B) genes among coliform isolates. A total of 47 integron integrase bearing strains of coliform bacteria were analysed. Sequence analysis showed the presence of dfrA1-aadA1, dfrA1, dfrA5, dfrA7, aadA1, aadA4 cassette arrays in class 1 integron and dfrA1-sat2-aadA1 in class 2 integrase genes. CONCLUSION Circulating currency was heavily contaminated with antimicrobial-resistant coliform bacteria bearing class 1 and class 2 integron integrase genes. SIGNIFICANCE AND IMPACT OF THE STUDY This study describes a potential threat of severe bacterial infections due to improper hand hygiene and community sanitation when dealing with the currency notes.
Collapse
Affiliation(s)
- A Sarwar
- Department of Microbiology, Faculty of Life Sciences, University of Central Punjab, Lahore, Pakistan
| | - I Ahmad
- Department of Microbiology, Faculty of Life Sciences, University of Central Punjab, Lahore, Pakistan
| | - A Amin
- Department of Microbiology, Faculty of Life Sciences, University of Central Punjab, Lahore, Pakistan
| | - M A Saleem
- Department of Microbiology, Faculty of Life Sciences, University of Central Punjab, Lahore, Pakistan
| |
Collapse
|
30
|
Park GE, Ko JH, Ki HK. Clinical Benefits of Piperacillin/Tazobactam versus a Combination of Ceftriaxone and Clindamycin in the Treatment of Early, Non-Ventilator, Hospital-Acquired Pneumonia in a Community-Based Hospital. Int J Gen Med 2020; 13:705-712. [PMID: 33061539 PMCID: PMC7522409 DOI: 10.2147/ijgm.s271301] [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: 07/14/2020] [Accepted: 09/07/2020] [Indexed: 11/23/2022] Open
Abstract
Purpose There is an increasing prevalence of multidrug-resistant (MDR) organisms worldwide. Therefore, broad-spectrum antibiotics are recommended in the treatment of hospital-acquired pneumonia (HAP). However, it remains controversial whether patients with early onset, non-ventilator HAP (NV-HAP) should also be empirically treated with broad-spectrum antibiotics. We compared the clinical benefit of ceftriaxone plus clindamycin vs piperacillin/tazobactam as the initial empirical treatment of adults with early NV-HAP. Patients and Methods Retrospective cohort study was conducted in adult patients who were diagnosed with early, NV-HAP between January 2013 and June 2017 at a community-based tertiary care hospital. Patients were eligible for inclusion if they had received empiric treatment with either ceftriaxone and clindamycin or piperacillin/tazobactam for at least 3 days. Patients with increased risk of MDR pathogens were excluded. Results A total of 89 patients were treated with ceftriaxone and clindamycin, while 124 received piperacillin/tazobactam. There were no significant differences between the two antibiotic groups with regard to median age, sex, or risk of pneumonia. The 30-day all-cause mortality did not differ significantly between the ceftriaxone plus clindamycin and piperacillin/tazobactam groups (4.5% vs 1.6%, P=0.202, respectively). However, in multivariate analysis, clinical failure was more frequent in the ceftriaxone plus clindamycin group than in the piperacillin/tazobactam group (HR 3.316; 95% CI, 1.589–6918, P=0.001). Conclusion Treatment with piperacillin/tazobactam was more effective than that with ceftriaxone plus clindamycin in patients with early NV-HAP. This study supports the recent treatment recommendations that patients with early NV-HAP should be treated empirically with broad-spectrum antibiotics.
Collapse
Affiliation(s)
- Ga Eun Park
- Division of Infectious Disease, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - Jae-Hoon Ko
- Division of Infectious Diseases, Department of Internal Medicine, Samsung Medical Center, Seoul, Korea
| | - Hyun Kyun Ki
- Division of Infectious Disease, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| |
Collapse
|
31
|
Wan J, Ling XA, Wang J, Ding GG, Wang X. Inhibitory effect of Ubenimex combined with fluorouracil on multiple drug resistance and P-glycoprotein expression level in non-small lung cancer. J Cell Mol Med 2020; 24:12840-12847. [PMID: 32945069 PMCID: PMC7687002 DOI: 10.1111/jcmm.15875] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 04/30/2020] [Revised: 08/19/2020] [Accepted: 08/27/2020] [Indexed: 12/17/2022] Open
Abstract
Tumour drug resistance is one of the most urgent issues faced by anti‐tumour therapies. P‐glycoprotein (P‐gp) has been reported to be correlated with drug resistance. In this study, we aimed to study the synergistic effect of fluorouracil (5FU) and Ubenimex (UBE) on drug resistance in lung cancer. In this study, the tumour inhibitory role of 5FU and UBE was assessed in nude mice bearing A549 or A549/ADR. Real‐time polymerase chain reaction, Western blot and immunohistochemical were performed to analyse the mRNA and protein expression of P‐gp. TUNEL assay was used to evaluate the apoptosis of A549/ADR cells under 5FU and UBE treatment. MTT assay was performed to calculate the IC50 value of 5FU and UBE in A549 or A549/ADR. Combined administration of 5FU and UBE significantly inhibited the tumour growth of multidrug‐resistant cell lines A549/ADR in nude mice by down‐regulating the mRNA and protein expression of P‐gp. The apoptosis of A549/ADR was remarkably elevated in nude mice treated with 5FU and UBE. The IC50 value of 5FU and UBE was dramatically declined in A549/ADR cells compared with that of 5FU or UBE alone. Combined treatment of 5FU and UBE remarkably enhanced the apoptosis of A549/ADR cells by enhancing the intracellular accumulation of the drugs. The results of this study demonstrated that UBE combined with fluorouracil attenuated multiple drug resistance and inhibited the expression of P‐gp in lung cancer.
Collapse
Affiliation(s)
- Jun Wan
- Department of Thoracic Surgery, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of South University of Science and Technology, Shenzhen, China
| | - Xie-An Ling
- Department of Thoracic Surgery, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of South University of Science and Technology, Shenzhen, China
| | - Jian Wang
- Department of Thoracic Surgery, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of South University of Science and Technology, Shenzhen, China
| | - Guang-Gui Ding
- Department of Thoracic Surgery, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of South University of Science and Technology, Shenzhen, China
| | - Xi Wang
- Department of Critical Care Medicine, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of South University of Science and Technology, Shenzhen, China
| |
Collapse
|
32
|
Markov OV, Filatov AV, Kupryushkin MS, Chernikov IV, Patutina OA, Strunov AA, Chernolovskaya EL, Vlassov VV, Pyshnyi DV, Zenkova MA. Transport Oligonucleotides-A Novel System for Intracellular Delivery of Antisense Therapeutics. Molecules 2020; 25:E3663. [PMID: 32796768 DOI: 10.3390/molecules25163663] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 08/10/2020] [Accepted: 08/11/2020] [Indexed: 12/12/2022] Open
Abstract
Biological activity of antisense oligonucleotides (asON), especially those with a neutral backbone, is often attenuated by poor cellular accumulation. In the present proof-of-concept study, we propose a novel delivery system for asONs which implies the delivery of modified antisense oligonucleotides by so-called transport oligonucleotides (tON), which are oligodeoxyribonucleotides complementary to asON conjugated with hydrophobic dodecyl moieties. Two types of tONs, bearing at the 5′-end up to three dodecyl residues attached through non-nucleotide inserts (TD series) or anchored directly to internucleotidic phosphate (TP series), were synthesized. tONs with three dodecyl residues efficiently delivered asON to cells without any signs of cytotoxicity and provided a transfection efficacy comparable to that achieved using Lipofectamine 2000. We found that, in the case of tON with three dodecyl residues, some tON/asON duplexes were excreted from the cells within extracellular vesicles at late stages of transfection. We confirmed the high efficacy of the novel and demonstrated that MDR1 mRNA targeted asON delivered by tON with three dodecyl residues significantly reduced the level of P-glycoprotein and increased the sensitivity of KB-8-5 human carcinoma cells to vinblastine. The obtained results demonstrate the efficacy of lipophilic oligonucleotide carriers and shows they are potentially capable of intracellular delivery of any kind of antisense oligonucleotides.
Collapse
|
33
|
Almutairy R, Aljrarri W, Noor A, Elsamadisi P, Shamas N, Qureshi M, Ismail S. Impact of Colistin Dosing on the Incidence of Nephrotoxicity in a Tertiary Care Hospital in Saudi Arabia. Antibiotics (Basel) 2020; 9:E485. [PMID: 32781593 DOI: 10.3390/antibiotics9080485] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [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: 07/06/2020] [Revised: 07/30/2020] [Accepted: 08/04/2020] [Indexed: 12/23/2022] Open
Abstract
Colistin therapy is associated with the development of nephrotoxicity. We examined the incidence and risk factors of nephrotoxicity associated with colistin dosing. We included adult hospitalized patients who received intravenous (IV) colistin for >72 h between January 2014 and December 2015. The primary endpoint was the incidence of colistin-associated acute kidney injury (AKI). The secondary analyses were predictors of nephrotoxicity, proportions of patients inappropriately dosed with colistin according to the Food and Drug Administration (FDA), European Medicines Agency (EMA), and Garonzik formula and clinical cure rate. We enrolled 198 patients with a mean age of 55.67 ± 19.35 years, 62% were men, and 60% were infected with multidrug-resistant organisms. AKI occurred in 44.4% (95% CI: 37.4-51.7). Multivariable analysis demonstrated that daily colistin dose per body weight (kg) was associated with AKI (OR: 1.57, 95% CI: 1.08-2.30; p = 0.02). Other significant predictors included serum albumin level, body mass index (BMI), and severity of illness. None of the patients received loading doses, however FDA-recommended dosing was achieved in 70.2% and the clinical cure rate was 13%. The incidence of colistin-associated AKI is high. Daily colistin dose, BMI, serum albumin level, and severity of illness are independent predictors of nephrotoxicity.
Collapse
|
34
|
Zingali T, Chapman TA, Webster J, Roy Chowdhury P, Djordjevic SP. Genomic Characterisation of a Multiple Drug Resistant IncHI2 ST4 Plasmid in Escherichia coli ST744 in Australia. Microorganisms 2020; 8:microorganisms8060896. [PMID: 32545892 PMCID: PMC7355605 DOI: 10.3390/microorganisms8060896] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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: 05/15/2020] [Revised: 06/11/2020] [Accepted: 06/12/2020] [Indexed: 01/16/2023] Open
Abstract
Antibiotic resistance genes (ARGs) including those from the blaCTX-M family and mcr-1 that encode resistance to extended spectrum β–lactams and colistin, respectively, have been linked with IncHI2 plasmids isolated from swine production facilities globally but not in IncHI2 plasmids from Australia. Here we describe the first complete sequence of a multiple drug resistance Australian IncHI2-ST4 plasmid, pTZ41_1P, from a commensal E. coli from a healthy piglet. pTZ41_1P carries genes conferring resistance to heavy-metals (copper, silver, tellurium and arsenic), β-lactams, aminoglycosides and sulphonamides. The ARGs reside within a complex resistance locus (CRL) that shows considerable sequence identity to a CRL in pSDE_SvHI2, an IncHI2:ST3 plasmid from an enterotoxigenic E. coli with serotype O157:H19 of porcine origin that caused substantial losses to swine production operations in Australia in 2007. pTZ41_1P is closely related to IncHI2 plasmids found in E. coli and Salmonella enterica from porcine, avian and human sources in Europe and China but it does not carry genes encoding resistance to clinically-important antibiotics. We identified regions of IncHI2 plasmids that contribute to the genetic plasticity of this group of plasmids and highlight how they may readily acquire new resistance gene cargo. Genomic surveillance should be improved to monitor IncHI2 plasmids.
Collapse
Affiliation(s)
- Tiziana Zingali
- The ithree Institute, University of Technology Sydney, City Campus, Ultimo, NSW 2007, Australia; (T.Z.); (P.R.C.)
- Australian Centre for Genomic Epidemiological Microbiology, University of Technology Sydney, P.O. Box 123, Broadway, NSW 2007, Australia
| | - Toni A. Chapman
- NSW Department of Primary Industries, Elizabeth MacArthur Agricultural Institute, Menangle, NSW 2568, Australia; (T.A.C.); (J.W.)
| | - John Webster
- NSW Department of Primary Industries, Elizabeth MacArthur Agricultural Institute, Menangle, NSW 2568, Australia; (T.A.C.); (J.W.)
| | - Piklu Roy Chowdhury
- The ithree Institute, University of Technology Sydney, City Campus, Ultimo, NSW 2007, Australia; (T.Z.); (P.R.C.)
- Australian Centre for Genomic Epidemiological Microbiology, University of Technology Sydney, P.O. Box 123, Broadway, NSW 2007, Australia
| | - Steven P. Djordjevic
- The ithree Institute, University of Technology Sydney, City Campus, Ultimo, NSW 2007, Australia; (T.Z.); (P.R.C.)
- Australian Centre for Genomic Epidemiological Microbiology, University of Technology Sydney, P.O. Box 123, Broadway, NSW 2007, Australia
- Correspondence: ; Tel.: +61-2-9514-4127
| |
Collapse
|
35
|
Piasny J, Wiatrak B, Dobosz A, Tylińska B, Gębarowski T. Antitumor Activity of New Olivacine Derivatives. Molecules 2020; 25:E2512. [PMID: 32481577 DOI: 10.3390/molecules25112512] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 04/21/2020] [Revised: 05/22/2020] [Accepted: 05/25/2020] [Indexed: 12/24/2022] Open
Abstract
Olivacine is an alkaloid-containing pyridocarbazole structure. It is isolated from the bark of the evergreen timber tree, Aspidosperma olivaceum. Its well-documented anticancer activity led to the synthesis of new derivatives, which are semisynthetic and fully synthetic pyridocarbazoles. This study aimed to evaluate the potential antineoplastic activity of four newly synthesized olivacine derivatives. Multidrug resistance is a common phenomenon causing failure in the chemotherapy of many tumors. It is mainly related to increased function of P-glycoprotein, an efflux pump removing cytostatic out of the cells. The cell lines used in the study were colorectal carcinoma cell lines: LoVo (doxorubicin-sensitive) and LoVo/DX (doxorubicin-resistant). The NHDF cell line was used to assess cell viability. First, the cells were incubated with olivacine derivatives. In the next step, the following assays were performed: DCF-DA assay, MTT assay, rhodamine 123 assay, detection of apoptosis, proliferation inhibition-mitotic index. The tested compounds showed higher antineoplastic potential and lower toxicity than the reference compound ellipticine. The results indicate that the new olivacine derivatives are good candidates for future anticancer drugs.
Collapse
|
36
|
Cagala M, Pavlikova L, Seres M, Kadlecikova K, Breier A, Sulova Z. Development of Resistance to Endoplasmic Reticulum Stress-Inducing Agents in Mouse Leukemic L1210 Cells. Molecules 2020; 25:molecules25112517. [PMID: 32481618 PMCID: PMC7321222 DOI: 10.3390/molecules25112517] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 05/25/2020] [Accepted: 05/26/2020] [Indexed: 02/06/2023] Open
Abstract
Four new variants of L1210 cells resistant to endoplasmic reticulum (ER) stressors, tunicamycin (STun), thapsigargin (SThap), bortezomib (SBor), and MG-132 (SMG-132), were developed via an 18-month periodic cultivation in culture medium with a gradual increase in substance concentration. Multidrug resistance was generated for STun (to tunicamycin, bortezomib and MG-132), SThap (to tunicamycin, thapsigargin and MG-132), SBor (to bortezomib and MG-132), and SMG-132 (to bortezomib and MG-132). These cells were compared to the original L1210 cells and another two variants, which expressed P-gp due to induction with vincristine or transfection with the gene encoding P-gp, in terms of the following properties: sensitivity to either vincristine or the ER stressors listed above, proliferative activity, expression of resistance markers and proteins involved in the ER stress response, and proteasome activity. The resistance of the new cell variants to ER stressors was accompanied by a decreased proliferation rate and increased proteasome activity. The most consistent change in protein expression was the elevation of GRP78/BiP at the mRNA and protein levels in all resistant variants of L1210 cells. In conclusion, the mechanisms of resistance to these stressors have certain common features, but there are also specific differences.
Collapse
Affiliation(s)
- Martin Cagala
- Institute of Molecular Physiology and Genetics, Centre of Biosciences, Slovak Academy of Sciences, Dúbravská cesta 9, 84505 Bratislava, Slovakia; (M.C.); (M.S.)
| | - Lucia Pavlikova
- Institute of Molecular Physiology and Genetics, Centre of Biosciences, Slovak Academy of Sciences, Dúbravská cesta 9, 84505 Bratislava, Slovakia; (M.C.); (M.S.)
- Correspondence: (L.P.); (A.B.); (Z.S.); Tel.: +421-2-593-25-514 (A.B.); +421-2-32295510 (Z.S.)
| | - Mario Seres
- Institute of Molecular Physiology and Genetics, Centre of Biosciences, Slovak Academy of Sciences, Dúbravská cesta 9, 84505 Bratislava, Slovakia; (M.C.); (M.S.)
| | - Karolina Kadlecikova
- Institute of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, 81237 Bratislava, Slovakia;
| | - Albert Breier
- Institute of Molecular Physiology and Genetics, Centre of Biosciences, Slovak Academy of Sciences, Dúbravská cesta 9, 84505 Bratislava, Slovakia; (M.C.); (M.S.)
- Institute of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, 81237 Bratislava, Slovakia;
- Correspondence: (L.P.); (A.B.); (Z.S.); Tel.: +421-2-593-25-514 (A.B.); +421-2-32295510 (Z.S.)
| | - Zdena Sulova
- Institute of Molecular Physiology and Genetics, Centre of Biosciences, Slovak Academy of Sciences, Dúbravská cesta 9, 84505 Bratislava, Slovakia; (M.C.); (M.S.)
- Correspondence: (L.P.); (A.B.); (Z.S.); Tel.: +421-2-593-25-514 (A.B.); +421-2-32295510 (Z.S.)
| |
Collapse
|
37
|
Abstract
Multiple drug (antibiotic) resistance (MDR) has become a major threat to the treatment of typhoid and other infectious diseases. Since the 1970s, this threat has increased in Salmonella enterica serovar Typhi, driven in part by the emergence of successful genetic clades, such as haplotype H58, associated with the MDR phenotype. H58 S. Typhi can express multiple antibiotic resistance determinants while retaining the ability to efficiently transmit and persist within the human population. The recent identification of extensively drug resistant S. Typhi only highlights the dangers of ignoring this threat. Here we discuss the evolution of the S. Typhi MDR phenotype and consider options for management.
Collapse
Affiliation(s)
- Zoe A Dyson
- Department of Medicine, University of Cambridge, Hinxton, Cambridge, United Kingdom
| | - Elizabeth J Klemm
- Department of Medicine, University of Cambridge, Hinxton, Cambridge, United Kingdom.,Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, United Kingdom
| | - Sophie Palmer
- Department of Medicine, University of Cambridge, Hinxton, Cambridge, United Kingdom
| | - Gordon Dougan
- Department of Medicine, University of Cambridge, Hinxton, Cambridge, United Kingdom.,Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, United Kingdom
| |
Collapse
|
38
|
Rodrigues GL, Panzenhagen P, Ferrari RG, Paschoalin VMF, Conte-Junior CA. Antimicrobial Resistance in Nontyphoidal Salmonella Isolates from Human and Swine Sources in Brazil: A Systematic Review of the Past Three Decades. Microb Drug Resist 2020; 26:1260-1270. [PMID: 32412862 DOI: 10.1089/mdr.2019.0475] [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: 01/06/2023] Open
Abstract
Salmonella is the leading cause of foodborne illnesses worldwide. The widespread use of antimicrobials as prophylactic, therapeutic, and growth promoters in both livestock and human medicine has resulted in selective pressure regarding antimicrobial-resistant (AMR) bacteria. This systematic review summarizes phenotypic antimicrobial resistance profiles in Salmonella isolates from human and swine sources between 1990 and 2018 in Brazil. The 20 studies that matched the eligibility criteria-isolates from pigs and humans from Brazil, between 1990 and 2016, containing information on the number of Salmonella isolates, and applying the disk diffusion susceptibility method-were included. During the assessed period, Salmonella strains isolated from swine sources displayed the highest resistance rates for tetracycline (20.3%) and sulfonamides (17.4%). In contrast, human isolates displayed the highest resistance rates against ampicillin (19.8%) and tetracycline (17%). Salmonella Typhimurium was the most frequent AMR isolate from both swine and human sources, corresponding to 67% of all isolates. From 2001 to 2005, tetracycline and ampicillin were the top antimicrobial resistance compounds, and the most frequently detected in swine and human sources, respectively. A total of 63 and 58 multiple drug resistance profiles were identified in swine and human isolates, respectively. Antimicrobial resistance has decreased throughout the 1990-2016 period, except for gentamicin and nalidixic acid in swine and human isolates, respectively. The results indicate that Salmonella isolated from human and swine display resistance against clinically important antimicrobials, indicating that swine are possibly one of the main vectors for spreading human salmonellosis in Brazil.
Collapse
Affiliation(s)
- Grazielle Lima Rodrigues
- Institute of Chemistry, Federal University of Rio de Janeiro, Cidade Universitária, Rio de Janeiro, Brazil.,Center for Food Analysis, Technological Development Support Laboratory (LADETEC), Cidade Universitária, Rio de Janeiro, Brazil
| | - Pedro Panzenhagen
- Institute of Chemistry, Federal University of Rio de Janeiro, Cidade Universitária, Rio de Janeiro, Brazil.,Center for Food Analysis, Technological Development Support Laboratory (LADETEC), Cidade Universitária, Rio de Janeiro, Brazil
| | - Rafaela Gomes Ferrari
- Institute of Chemistry, Federal University of Rio de Janeiro, Cidade Universitária, Rio de Janeiro, Brazil.,Center for Food Analysis, Technological Development Support Laboratory (LADETEC), Cidade Universitária, Rio de Janeiro, Brazil
| | | | - Carlos Adam Conte-Junior
- Institute of Chemistry, Federal University of Rio de Janeiro, Cidade Universitária, Rio de Janeiro, Brazil.,Center for Food Analysis, Technological Development Support Laboratory (LADETEC), Cidade Universitária, Rio de Janeiro, Brazil.,Faculty of Veterinary Medicine, Analytical and Molecular Laboratory Center, Fluminense Federal University, Niterói, Brazil.,National Institute of Health Quality Control, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| |
Collapse
|
39
|
Tan L, Yuan J, Zhu W, Tao K, Wang G, Gao J. Interferon regulatory factor-1 suppresses DNA damage response and reverses chemotherapy resistance by downregulating the expression of RAD51 in gastric cancer. Am J Cancer Res 2020; 10:1255-1270. [PMID: 32368400 PMCID: PMC7191096] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 03/25/2020] [Indexed: 06/11/2023] Open
Abstract
Recent studies have shown that IRF-1 plays a significant role in various tumour-induced chemoresistance, but its role and mechanism in gastric cancer-associated chemoresistance are not clear. Our study showed that IRF-1 expression could reverse gastric cancer-related chemoresistance. Dysregulated DNA repair is an important cause of chemoresistance. We established a chemoresistant gastric cancer cell line and found that drug-resistant gastric cancer cells had increased DNA repair ability and that IRF-1 regulated DNA damage repair. Further studies showed that IRF-1 inhibited the expression of RAD51 directly by binding to the RAD51 promoter to affect DNA damage repair; this binding reversed resistance. However, restoring the expression of RAD51 halted the inhibitory effect of IRF-1 partially. Also, we revealed that the overexpression of IRF-1 in a mouse model synergized with chemotherapeutic drugs to inhibit tumour growth. Finally, IRF-1 expression correlated with RAD51 expression in gastric cancer specimens. The expression of IRF-1 and RAD51 are both related to the survival duration of patients with gastric cancer. These results suggest that targeting IRF-1-RAD51 could be an effective approach to reversing multidrug resistance in gastric cancer.
Collapse
Affiliation(s)
- Lulu Tan
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology Wuhan 430022, Hubei, P. R. China
| | - Jingsheng Yuan
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology Wuhan 430022, Hubei, P. R. China
| | - Wenzhong Zhu
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology Wuhan 430022, Hubei, P. R. China
| | - Kaixiong Tao
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology Wuhan 430022, Hubei, P. R. China
| | - Guobing Wang
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology Wuhan 430022, Hubei, P. R. China
| | - Jinbo Gao
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology Wuhan 430022, Hubei, P. R. China
| |
Collapse
|
40
|
Nagy M, Szemán-Nagy G, Kiss A, Nagy ZL, Tálas L, Rácz D, Majoros L, Tóth Z, Szigeti ZM, Pócsi I, Kéki S. Antifungal Activity of an Original Amino-Isocyanonaphthalene (ICAN) Compound Family: Promising Broad Spectrum Antifungals. Molecules 2020; 25:molecules25040903. [PMID: 32085460 PMCID: PMC7070524 DOI: 10.3390/molecules25040903] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 02/11/2020] [Accepted: 02/13/2020] [Indexed: 02/07/2023] Open
Abstract
: Multiple drug resistant fungi pose a serious threat to human health, therefore the development of completely new antimycotics is of paramount importance. The in vitro antifungal activity of the original, 1-amino-5-isocyanonaphthalenes (ICANs) was evaluated against reference strains of clinically important Candida species. Structure-activity studies revealed that the naphthalene core and the isocyano- together with the amino moieties are all necessary to exert antifungal activity. 1,1-N-dimethylamino-5-isocyanonaphthalene (DIMICAN), the most promising candidate, was tested further in vitro against clinical isolates of Candida species, yielding a minimum inhibitory concentration (MIC) of 0.04-1.25 µg/mL. DIMICAN was found to be effective against intrinsically fluconazole resistant Candida krusei isolates, too. In vivo experiments were performed in a severly neutropenic murine model inoculated with a clinical strain of Candida albicans. Daily administration of 5 mg/kg DIMICAN intraperitoneally resulted in 80% survival even at day 13, whereas 100% of the control group died within six days. Based on these results, ICANs may become an effective clinical lead compound family against fungal pathogens.
Collapse
Affiliation(s)
- Miklós Nagy
- Department of Applied Chemistry, Faculty of Science, University of Debrecen, 4010 Debrecen, Hungary; (M.N.); (Z.L.N.); (D.R.)
| | - Gábor Szemán-Nagy
- Department of Molecular Biotechnology and Microbiology, Faculty of Science, University of Debrecen, 4010 Debrecen, Hungary; (G.S.-N.); (A.K.); (L.T.); (Z.M.S.)
| | - Alexandra Kiss
- Department of Molecular Biotechnology and Microbiology, Faculty of Science, University of Debrecen, 4010 Debrecen, Hungary; (G.S.-N.); (A.K.); (L.T.); (Z.M.S.)
| | - Zsolt László Nagy
- Department of Applied Chemistry, Faculty of Science, University of Debrecen, 4010 Debrecen, Hungary; (M.N.); (Z.L.N.); (D.R.)
| | - László Tálas
- Department of Molecular Biotechnology and Microbiology, Faculty of Science, University of Debrecen, 4010 Debrecen, Hungary; (G.S.-N.); (A.K.); (L.T.); (Z.M.S.)
| | - Dávid Rácz
- Department of Applied Chemistry, Faculty of Science, University of Debrecen, 4010 Debrecen, Hungary; (M.N.); (Z.L.N.); (D.R.)
| | - László Majoros
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, 1 Egyetem tér, 4010 Debrecen, Hungary; (L.M.); (Z.T.)
| | - Zoltán Tóth
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, 1 Egyetem tér, 4010 Debrecen, Hungary; (L.M.); (Z.T.)
| | - Zsuzsa Máthéné Szigeti
- Department of Molecular Biotechnology and Microbiology, Faculty of Science, University of Debrecen, 4010 Debrecen, Hungary; (G.S.-N.); (A.K.); (L.T.); (Z.M.S.)
| | - István Pócsi
- Department of Molecular Biotechnology and Microbiology, Faculty of Science, University of Debrecen, 4010 Debrecen, Hungary; (G.S.-N.); (A.K.); (L.T.); (Z.M.S.)
- Correspondence: (I.P.); (S.K.)
| | - Sándor Kéki
- Department of Applied Chemistry, Faculty of Science, University of Debrecen, 4010 Debrecen, Hungary; (M.N.); (Z.L.N.); (D.R.)
- Correspondence: (I.P.); (S.K.)
| |
Collapse
|
41
|
Gao H, Bai Y, Chen L, Fakhri GE, Wang M. Self-Assembly Nanoparticles for Overcoming Multidrug Resistance and Imaging-Guided Chemo-Photothermal Synergistic Cancer Therapy. Int J Nanomedicine 2020; 15:809-819. [PMID: 32103938 PMCID: PMC7008176 DOI: 10.2147/ijn.s232449] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 09/25/2019] [Accepted: 01/02/2020] [Indexed: 12/29/2022] Open
Abstract
Background and Purpose The development of multiple drug resistance (MDR) to chemotherapy and single modal therapy remains unsatisfied for the eradication of tumor, which are major obstacles in cancer therapy. This novel system with excellent characteristics for inhibition of P-glycoprotein (P-gp), and for near-infrared fluorescence (NIRF) imaging-guided chemo-photothermal therapy (PTT), has been identified as a promising way to MDR and achieve synergistic cancer therapy. Methods In this study, we successfully synthesized a multifunctional theranostic system, which was developed through FDA-approved self-assembling drugs, which contain anticancer drug doxorubicin (Dox), imaging and high photothermal conversion drug indocyanine green (ICG) and P-gp regulator TPGS (the system named T/Dox-ICG). We studied the characterization of T/Dox-ICG NPs, including the TEM, SEM, DLS, UV-vis-NIR, zeta potential, CLSM, in vitro FL imaging, in vitro photothermal effect, in vitro Dox and ICG release. We used CLSM to verify the location of intracellular distribution of Dox in SCG 7901/VCR cells, Western blot was performed to demonstrate the TPGS-mediated inhibition of P-gp. And, the cytotoxicity of materials against SCG 7901/VCR cells was studied by the MTT assay. Results The TEM showed the T/Dox-ICG NPs had good monodispersity with diameters of 19.03 nm, Dox and ICG could be released constantly from T/Dox-ICG NPs in vitro. In vitro cell experiments demonstrated higher Dox accumulation and retention in the nucleus. Western blot showed TPGS could obviously inhibit the expression of P-gp. In vitro cytotoxicity assay showed more significant cytotoxicity on MDR cells (SCG 7901/VCR) with only 8.75% of cells surviving. Conclusion MDR cancer therapy indicates that it may be important to develop a safer system that can simultaneously inhibit the drug transporters and monitor the delivery of chemotherapeutic agents, and combination therapy have raised widespread concern on tumor treatment.
Collapse
Affiliation(s)
- Haiyan Gao
- Henan Provincial People's Hospital & Zhengzhou University People's Hospital, Zhengzhou 450003, People's Republic of China.,Henan Key Laboratory of Neurological Imaging, Zhengzhou University, Zhengzhou 450003, People's Republic of China
| | - Yan Bai
- Henan Provincial People's Hospital & Zhengzhou University People's Hospital, Zhengzhou 450003, People's Republic of China.,Henan Key Laboratory of Neurological Imaging, Zhengzhou University, Zhengzhou 450003, People's Republic of China
| | - Lijuan Chen
- Henan Provincial People's Hospital & Zhengzhou University People's Hospital, Zhengzhou 450003, People's Republic of China.,Henan Key Laboratory of Neurological Imaging, Zhengzhou University, Zhengzhou 450003, People's Republic of China
| | - Georges Ei Fakhri
- Gordon Center for Medical Imaging, Radiology, Massachusettes General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Meiyun Wang
- Henan Provincial People's Hospital & Zhengzhou University People's Hospital, Zhengzhou 450003, People's Republic of China.,Henan Key Laboratory of Neurological Imaging, Zhengzhou University, Zhengzhou 450003, People's Republic of China
| |
Collapse
|
42
|
Vickers ML, Ballard EL, Harris PNA, Knibbs LD, Jaiprakash A, Dulhunty JM, Crawford RW, Parkinson B. Bacterial Profile, Multi-Drug Resistance and Seasonality Following Lower Limb Orthopaedic Surgery in Tropical and Subtropical Australian Hospitals: An Epidemiological Cohort Study. Int J Environ Res Public Health 2020; 17:E657. [PMID: 31968529 DOI: 10.3390/ijerph17020657] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Revised: 01/12/2020] [Accepted: 01/15/2020] [Indexed: 12/11/2022]
Abstract
We aimed to describe the epidemiology, multi-drug resistance and seasonal distribution of bacteria cultured within 12 months following lower limb orthopaedic surgery in tropical and subtropical Australian hospitals between 2010 and 2017. We collected data from four tropical and two subtropical hospitals. Categorical variables were examined using the Pearson Chi-squared test or Fisher's Exact test, and continuous variables with the Student t-test or Mann-Whitney U test. A Poisson regression model was used to examine the relationship between season, weather and the incidence of Staphylococcus and nonfermentative species. We found that at tropical sites, nonfermenters (Pseudomonas aeruginosa and Acinetobacter baumannii) were more common (28.7% vs. 21.6%, p = 0.018), and patients were more likely to culture multi-drug-resistant (MDR) nonfermenters (11.4% vs. 1.3%, p = 0.009) and MDR Staphylococcus aureus (35.9% vs. 24.6%, p = 0.006). At tropical sites, patients were more likely to be younger (65.9 years vs. 72.0, p = < 0.001), male (57.7% vs. 47.8%, p = 0.005), having knee surgery (45.3% vs. 34.5%, p = 0.002) and undergoing primary procedures (85.0% vs. 73.0%, p = < 0.001). Species were similar between seasons in both tropical and subtropical hospitals. Overall, we found that following lower limb orthopaedic surgery in tropical compared with subtropical Australia, patients were more likely to culture nonfermenters and some MDR species.
Collapse
|
43
|
Landini S, Mazzinghi B, Becherucci F, Allinovi M, Provenzano A, Palazzo V, Ravaglia F, Artuso R, Bosi E, Stagi S, Sansavini G, Guzzi F, Cirillo L, Vaglio A, Murer L, Peruzzi L, Pasini A, Materassi M, Roperto RM, Anders HJ, Rotondi M, Giglio SR, Romagnani P. Reverse Phenotyping after Whole-Exome Sequencing in Steroid-Resistant Nephrotic Syndrome. Clin J Am Soc Nephrol 2019; 15:89-100. [PMID: 31831576 PMCID: PMC6946071 DOI: 10.2215/cjn.06060519] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [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: 05/17/2019] [Accepted: 10/08/2019] [Indexed: 12/27/2022]
Abstract
BACKGROUND AND OBJECTIVES Nephrotic syndrome is a typical presentation of genetic podocytopathies but occasionally other genetic nephropathies can present as clinically indistinguishable phenocopies. We hypothesized that extended genetic testing followed by reverse phenotyping would increase the diagnostic rate for these patients. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS All patients diagnosed with nephrotic syndrome and referred to our center between 2000 and 2018 were assessed in this retrospective study. When indicated, whole-exome sequencing and in silico filtering of 298 genes related to CKD were combined with subsequent reverse phenotyping in patients and families. Pathogenic variants were defined according to current guidelines of the American College of Medical Genetics. RESULTS A total of 111 patients (64 steroid-resistant and 47 steroid-sensitive) were included in the study. Not a single pathogenic variant was detected in the steroid-sensitive group. Overall, 30% (19 out of 64) of steroid-resistant patients had pathogenic variants in podocytopathy genes, whereas a substantial number of variants were identified in other genes, not commonly associated with isolated nephrotic syndrome. Reverse phenotyping, on the basis of a personalized diagnostic workflow, permitted to identify previously unrecognized clinical signs of an unexpected underlying genetic nephropathy in a further 28% (18 out of 64) of patients. These patients showed similar multidrug resistance, but different long-term outcome, when compared with genetic podocytopathies. CONCLUSIONS Reverse phenotyping increased the diagnostic accuracy in patients referred with the diagnosis of steroid-resistant nephrotic syndrome.
Collapse
Affiliation(s)
- Samuela Landini
- Medical Genetics Unit, Meyer Children's University Hospital, Florence, Italy.,Department of Clinical and Experimental Biomedical Sciences "Mario Serio,".,Excellence Centre for Research, Transfer and High Education for the development of DE NOVO Therapies (DENOTHE), and
| | - Benedetta Mazzinghi
- Nephrology and Dialysis Unit, Meyer Children's University Hospital, Florence, Italy
| | - Francesca Becherucci
- Nephrology and Dialysis Unit, Meyer Children's University Hospital, Florence, Italy
| | - Marco Allinovi
- Department of Clinical and Experimental Biomedical Sciences "Mario Serio,".,Excellence Centre for Research, Transfer and High Education for the development of DE NOVO Therapies (DENOTHE), and
| | - Aldesia Provenzano
- Medical Genetics Unit, Meyer Children's University Hospital, Florence, Italy.,Excellence Centre for Research, Transfer and High Education for the development of DE NOVO Therapies (DENOTHE), and
| | - Viviana Palazzo
- Medical Genetics Unit, Meyer Children's University Hospital, Florence, Italy
| | - Fiammetta Ravaglia
- Nephrology and Dialysis Unit, Meyer Children's University Hospital, Florence, Italy
| | - Rosangela Artuso
- Medical Genetics Unit, Meyer Children's University Hospital, Florence, Italy
| | - Emanuele Bosi
- Department of Clinical and Experimental Biomedical Sciences "Mario Serio,"
| | - Stefano Stagi
- Department of Health Sciences, University of Florence, Florence, Italy
| | - Giulia Sansavini
- Nephrology and Dialysis Unit, Meyer Children's University Hospital, Florence, Italy
| | - Francesco Guzzi
- Department of Clinical and Experimental Biomedical Sciences "Mario Serio,".,Excellence Centre for Research, Transfer and High Education for the development of DE NOVO Therapies (DENOTHE), and.,Nephrology and Dialysis Unit, Meyer Children's University Hospital, Florence, Italy
| | - Luigi Cirillo
- Nephrology and Dialysis Unit, Meyer Children's University Hospital, Florence, Italy
| | - Augusto Vaglio
- Department of Clinical and Experimental Biomedical Sciences "Mario Serio,".,Excellence Centre for Research, Transfer and High Education for the development of DE NOVO Therapies (DENOTHE), and.,Nephrology and Dialysis Unit, Meyer Children's University Hospital, Florence, Italy
| | - Luisa Murer
- Pediatric Nephrology Dialysis and Transplant Unit, Department of Pediatrics, University of Padua, Padua, Italy
| | - Licia Peruzzi
- Pediatric Nephrology Unit, Regina Margherita Children's Hospital, Città della Salute e della Scienza di Torino, Turin, Italy
| | - Andrea Pasini
- Nephrology and Dialysis Unit, Department of Pediatrics, Azienda Ospedaliero Universitaria, Policlinico Sant'Orsola-Malpighi, Bologna, Italy
| | - Marco Materassi
- Nephrology and Dialysis Unit, Meyer Children's University Hospital, Florence, Italy
| | - Rosa Maria Roperto
- Nephrology and Dialysis Unit, Meyer Children's University Hospital, Florence, Italy
| | - Hans-Joachim Anders
- Medizinische Klinik and Poliklinik IV, Klinikum der Ludwig Maximilians University (LMU) München, München, Germany; and
| | - Mario Rotondi
- Unit of Internal Medicine and Endocrinology, Laboratory for Endocrine Disruptors, Istituti Clinici Scientifici Maugeri Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), University of Pavia, Pavia, Italy
| | - Sabrina Rita Giglio
- Medical Genetics Unit, Meyer Children's University Hospital, Florence, Italy.,Department of Clinical and Experimental Biomedical Sciences "Mario Serio,".,Excellence Centre for Research, Transfer and High Education for the development of DE NOVO Therapies (DENOTHE), and
| | - Paola Romagnani
- Department of Clinical and Experimental Biomedical Sciences "Mario Serio," .,Excellence Centre for Research, Transfer and High Education for the development of DE NOVO Therapies (DENOTHE), and.,Nephrology and Dialysis Unit, Meyer Children's University Hospital, Florence, Italy
| |
Collapse
|
44
|
Abstract
With the advent of antibiotics, bacterial infections were supposed to be a thing of past. However, this instead led to the selection and evolution of bacteria with mechanisms to counter the action of antibiotics. Antibiotic efflux is one of the major mechanisms, whereby bacteria pump out the antibiotics from their cellular interior to the external environment using special transporter proteins called efflux pumps. Inhibiting these pumps seems to be an attractive strategy at a time when novel antibiotic supplies are dwindling. Molecules capable of inhibiting these pumps, known as efflux pump inhibitors (EPIs), have been viewed as potential therapeutic agents that can rejuvenate the activity of antibiotics that are no longer effective against bacterial pathogens. EPIs follow some general mechanisms of efflux inhibition and are derived from various natural as well as synthetic sources. This review focuses on EPIs and identifies the challenges that have kept these futuristic therapeutics away from the commercial realm so far.
Collapse
Affiliation(s)
- Atin Sharma
- Department of Biotechnology, Indian Institute of Technology, Roorkee, India
| | - Vivek Kumar Gupta
- Department of Biotechnology, Indian Institute of Technology, Roorkee, India
| | - Ranjana Pathania
- Department of Biotechnology, Indian Institute of Technology, Roorkee, India
| |
Collapse
|
45
|
Abstract
Applications of biotechnological tools in food preservation have shown promising results in minimizing food spoilage. Design and development of highly efficient food preservatives are one of the key success factors in this application field. However, due to the inherent shortcomings of the bulk forms of such preservatives, research was in progress to find suitable alternatives to replace conventional modalities. The intervention of nanotechnology has made this approach feasible in almost every aspect of food preservation. This interface domain of nanobiotechnology has been very well explored in the last few decades and vast literature has been reported. Researchers have developed efficient nanopreservatives (NPRs) for diverse applications. However, the literature available on nano-based food preservation is not inclusive of molecular perspectives involved in food preservation. There is a large knowledge gap in the interface domain concerning the physics of intermolecular and interfacial forces and nanotechnology which play decisive roles in designing edible coatings (ECs). There is an urgent need for identifying the nano and molecular level contributing factors for developing efficient NPRs. Moreover, it is imperative to understand the possible health impact of NPRs in public interest and concern. This review revisits the fundamental aspects of food preservation and navigates through the applicability, safety, molecular aspects and future direction of NPRs.
Collapse
Affiliation(s)
- Devangana Bhuyan
- a TERI-Deakin Nanobiotechnology Centre , The Energy and Resources Institute , Gual Pahari , Haryana , India.,b Institute for Frontier Materials , Deakin University , Melbourne , Australia
| | | | - Ratul Kumar Das
- a TERI-Deakin Nanobiotechnology Centre , The Energy and Resources Institute , Gual Pahari , Haryana , India
| |
Collapse
|
46
|
Aygun F, Aygun FD, Varol F, Durak C, Cokugraş H, Camcioglu Y, Cam H. Can Nebulised Colistin Therapy Improve Outcomes in Critically Ill Children with Multi-Drug Resistant Gram-Negative Bacterial Pneumonia? Antibiotics (Basel) 2019; 8:E40. [PMID: 30979085 DOI: 10.3390/antibiotics8020040] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 04/06/2019] [Accepted: 04/09/2019] [Indexed: 11/17/2022] Open
Abstract
In the past decade, multidrug-resistant (MDR) gram-negative bacteria have become a major problem, especially for patients in intensive care units. Recently, colistin became the last resort therapy for MDR gram-negative bacteria infections. However, nebulised colistin use was limited to adult patients. Thus, we investigated the efficacy and safety of nebulised colistin treatment against MDR microorganisms in the paediatric intensive care unit (PICU). Data of all patients admitted for various critical illnesses (January 2016 to January 2019) were reviewed. Differences between groups (with and without a history of nebulised colistin) were compared. Of 330 patients, 23 (6.97%) used nebulised colistin. Significant relationships were found between nebulised colistin usage and several prognostic factors (inotropic drug use (p = 0.009), non-invasive mechanical ventilation (p ≤ 0.001), duration in PICU (p ≤ 0.001), and C-reactive protein level (p = 0.003)). The most common microorganism in tracheal aspirate and sputum cultures was Pseudomonas aeruginosa (13 patients). The most common underlying diagnosis was cystic fibrosis, noted in 6 patients. No serious nephrotoxicity and neurotoxicity occurred. This study showed that colistin can be safely used directly in the airway of critically ill children. However, nebulised colistin use did not have a positive effect on mortality and prognosis.
Collapse
|
47
|
Gao J, Chen L, Qi R, Zhou Z, Deng Z, Shi J, Qin T, Zhao S, Qian Y, Shen J. Simultaneous delivery of gene and chemotherapeutics via copolymeric micellar nanoparticles to overcome multiple drug resistance to promote synergistic tumor suppression. J Biomater Appl 2019; 34:130-140. [PMID: 30971178 DOI: 10.1177/0885328219839254] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Jianguo Gao
- 1 Department of Urology, Affiliated Hospital of Huzhou Teacher's College, The First People's Hospital of Hu Zhou, Hu Zhou, China
| | - Lingxiao Chen
- 2 Department of Urology, Xiangya Hospital, Central South University, Changsha, China
| | - Ruogu Qi
- 3 State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Changchun, China
| | - Zhihua Zhou
- 4 School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, China
| | - Zaian Deng
- 5 School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, China
| | - Jue Shi
- 5 School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, China
| | - Tao Qin
- 5 School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, China
| | - Shengzhe Zhao
- 6 Wenzhou Institute of Biomaterials and Engineering, Chinese Academy of Science, Wenzhou, China
| | - Yuna Qian
- 5 School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, China
- 6 Wenzhou Institute of Biomaterials and Engineering, Chinese Academy of Science, Wenzhou, China
| | - Jianliang Shen
- 5 School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, China
- 6 Wenzhou Institute of Biomaterials and Engineering, Chinese Academy of Science, Wenzhou, China
| |
Collapse
|
48
|
Assis RE, Coelho I, Real A, França L, Araújo A, Pereira T, Catorze N. Intra-Vesical Colistin for Pseudomonas aeruginosa Urinary Tract Infections. Eur J Case Rep Intern Med 2019; 6:000996. [PMID: 30756071 DOI: 10.12890/2019_000996] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 12/28/2018] [Indexed: 11/05/2022] Open
Abstract
The numbers of multiple drug-resistant Gram-negative bacterial infections are rising worldwide. The threat is increased by the lack of new antibiotics, so clinicians are turning to older drugs previously abandoned due to their recognized toxicity, such as colistin. However, the need to avoid kidney toxicity from colistin has led to its topical use. We present the case of a patient with type I cardiorenal syndrome with cystitis due to multiple drug-resistant Pseudomonas aeruginosa who was successfully treated with intravesical instillation of colistin. LEARNING POINTS The case report is one of the few in the literature on the intravesical instillation of colistin to address lower urinary tract infection.Isolated intravesical colistin instillation was effective in a patient with anuria.
Collapse
Affiliation(s)
| | - Inês Coelho
- Intensive Care Unit, Centro Hospitalar do Médio Tejo, Abrantes, Portugal
| | - André Real
- Intensive Care Unit, Centro Hospitalar do Médio Tejo, Abrantes, Portugal
| | - Luís França
- Intensive Care Unit, Centro Hospitalar do Médio Tejo, Abrantes, Portugal
| | - Ana Araújo
- Intensive Care Unit, Centro Hospitalar do Médio Tejo, Abrantes, Portugal
| | - Tiago Pereira
- Intensive Care Unit, Centro Hospitalar do Médio Tejo, Abrantes, Portugal
| | - Nuno Catorze
- Intensive Care Unit, Centro Hospitalar do Médio Tejo, Abrantes, Portugal
| |
Collapse
|
49
|
Yu Z, Kong Y, Luo Z, Liu T, Lin J. Anti-bacterial activity of mutant chensinin-1 peptide against multidrug-resistant Pseudomonas aeruginosa and its effects on biofilm-associated gene expression. Exp Ther Med 2019; 17:2031-2038. [PMID: 30867692 PMCID: PMC6396000 DOI: 10.3892/etm.2019.7182] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 08/10/2018] [Accepted: 10/26/2018] [Indexed: 01/23/2023] Open
Abstract
Nosocomial infections with Pseudomonas aeruginosa (PA) are difficult to treat due to the low outer membrane permeability of the bacterium and the development of resistance. In the present study, the anti-microbial peptide (AMP) mutant chensinin-1 (MC1) was revealed to exhibit anti-bacterial activity against a multidrug-resistant PA (MRPA) strain in vitro, and the minimum inhibitory concentration was 25 µM, which was 4-fold higher than that of the native strain. MC1 was able to disrupt the integrity of the cytoplasmic membrane in the native PA strain and MRPA and had a similar membrane depolarization ability in these strains, but the outer membrane permeability of MRPA cells was lower than that of native PA cells, as determined by a 1-N-phenylnaphthylamine assay. In addition, the abundance of the gene Psl encoding for biofilm-associated polysaccharides was detected using Congo red, and a high concentration of MC1 inhibited the formation of MRPA biofilms. Furthermore, the expression levels of biofilm-associated genes affected by the AMP, MC1, were quantified by polymerase chain reaction analysis. The results indicated that MC1 induced biofilm inhibition by downregulating the relative expression of specific biofilm polysaccharide-associated genes, including pelA, algD and pslA. The present results indicated that the AMP MC1 may be an effective antibiotic against MRPA strains.
Collapse
Affiliation(s)
- Zhiyuan Yu
- Department of Comprehensive Chemotherapy, Hunan Cancer Hospital, Affiliated Cancer Hospital of Xiangya Medical School of Central South University, Changsha, Hunan 410006, P.R. China
| | - Yi Kong
- Department of Comprehensive Chemotherapy, Hunan Cancer Hospital, Affiliated Cancer Hospital of Xiangya Medical School of Central South University, Changsha, Hunan 410006, P.R. China
| | - Zhenqin Luo
- Department of Comprehensive Chemotherapy, Hunan Cancer Hospital, Affiliated Cancer Hospital of Xiangya Medical School of Central South University, Changsha, Hunan 410006, P.R. China
| | - Tongtong Liu
- Department of Biotechnology, School of Life Science, Liaoning Normal University, Dalian, Liaoning 116081, P.R. China
| | - Jinguan Lin
- Department of Comprehensive Chemotherapy, Hunan Cancer Hospital, Affiliated Cancer Hospital of Xiangya Medical School of Central South University, Changsha, Hunan 410006, P.R. China
| |
Collapse
|
50
|
Preston RA, Mamikonyan G, DeGraff S, Chiou J, Kemper CJ, Xu A, Mastim M, Yeole R, Chavan R, Patel A, Friedland HD, Bhatia A. Single-Center Evaluation of the Pharmacokinetics of WCK 5222 (Cefepime-Zidebactam Combination) in Subjects with Renal Impairment. Antimicrob Agents Chemother 2019; 63:e01484-18. [PMID: 30397067 PMCID: PMC6325229 DOI: 10.1128/aac.01484-18] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [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: 08/04/2018] [Accepted: 10/27/2018] [Indexed: 01/03/2023] Open
Abstract
WCK 5222 is a novel β-lactam-β-lactam-enhancer combination of cefepime (FEP) and zidebactam (ZID). ZID is a novel β-lactam enhancer with a dual action of binding to Gram-negative penicillin-binding protein 2 (PBP2) and β-lactamase inhibition. WCK 5222 is being developed as a new therapeutic option for the treatment of complicated multidrug-resistant Gram-negative pathogen infections. We investigated the effect of renal impairment on the pharmacokinetics (PK) and safety of WCK 5222 in 48 subjects based on Cockcroft-Gault-estimated creatinine clearance (CLCR). We enrolled mild (n = 6; CLCR, 60 to <90 ml/min), moderate (n = 6; CLCR, 30 to <60 ml/min), and severe (n = 6; CLCR, <30 ml/min; not on dialysis) impairment, end-stage renal disease (ESRD) on hemodialysis (HD) (n = 6), and matched normal controls (n = 24; CLCR, ≥90 ml/min). Healthy control subjects and mild and moderate renal impairment subjects received a single 60-min intravenous (i.v.) infusion of 3 g WCK 5222 (2 g FEP/1 g ZID); severe renal impairment and HD subjects received a single 60-min i.v. infusion of 1.5 g WCK 5222 (1 g FEP plus 0.5 g ZID). Body and renal clearance decreased, and plasma half-life (t1/2) and the area under the concentration-time curve from time zero extrapolated to infinity (AUC0-∞ [h µg/ml]) increased in a graded relationship with severity of renal impairment for both FEP and ZID. Our findings suggest that dose adjustments for WCK 5222 will be required according to the degree of renal impairment. Overall, WCK 5222 (FEP-ZID) was found to be safe and well tolerated in subjects with normal and impaired renal function. (This study has been registered at ClinicalTrials.gov under identifier NCT02942810.).
Collapse
Affiliation(s)
- Richard A Preston
- Clinical Pharmacology Research Unit, Division of Clinical Pharmacology, Department of Medicine, Miller School of Medicine, University of Miami, Miami, Florida, USA
- University of Miami Clinical and Translational Science Institute (CTSI), Miami, Florida, USA
- Department of Cellular Biology and Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida, USA
- Jackson Memorial Hospital, Miami, Florida, USA
| | | | - Stephane DeGraff
- Clinical Pharmacology Research Unit, Division of Clinical Pharmacology, Department of Medicine, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - James Chiou
- Clinical Pharmacology Research Unit, Division of Clinical Pharmacology, Department of Medicine, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | | | - Allan Xu
- Keystone Bioanalytical, Inc., North Wales, Pennsylvania, USA
| | | | | | | | | | - H David Friedland
- Wockhardt's Morton Grove Pharmaceutical, Inc., Morton Grove, Illinois, USA
| | | |
Collapse
|