1
|
Hajimohammadi S, Momtaz H, Tajbakhsh E. Fabrication and antimicrobial properties of novel meropenem-honey encapsulated chitosan nanoparticles against multiresistant and biofilm-forming Staphylococcus aureus as a new antimicrobial agent. Vet Med Sci 2024; 10:e1440. [PMID: 38613443 PMCID: PMC11015535 DOI: 10.1002/vms3.1440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 02/21/2024] [Accepted: 03/24/2024] [Indexed: 04/15/2024] Open
Abstract
BACKGROUND Honey exhibits a broad spectrum of antibacterial activity against Gram-positive and Gram-negative bacteria, including methicillin-resistant Staphylococcus aureus (MRSA) ones. Chitosan (Cs) is a mucoadhesive polymer that also has antibacterial properties. Special attention has been paid to the design of polymeric nanoparticles (NPs) as new nano drug delivery systems to overcome bacterial resistance and its problems. OBJECTIVES The aim of the present study is to synthesize Cs-meropenem NPs with/without honey as an antibiofilm and antibacterial agent to inhibit Staphylococcus aureus. METHODS This study synthesized meropenem and honey-loaded Cs nanogels and subsequently characterized them by Field Emission Scanning Electron Microscopy (FESEM), Fourier Transform Infrared Spectroscopy (FTIR), and DLS-zeta potential. Using the broth microdilution and crystal violet assays, the antibacterial and antibiofilm activity of meropenem and honey-loaded Cs nanogel, free meropenem, free honey, and free Cs NPs were investigated in vitro against MRSA strains. 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) was also used to test the cytotoxicity of several Cs-NPs compound against the HEK-293 regular cell line. RESULTS The average size of meropenem and honey-Cs-NPs was reported to be 119.885 nm, and encapsulation efficiency was 88.33 ± 0.97 with stability up to 60 days at 4°C. The NPs showed enhanced antibiofilm efficacy against S. aureus at sub-minimum inhibitory concentrations. Additionally, the cytotoxicity of meropenem and honey-encapsulated Cs against the HEK-293 normal cell line was insignificant. CONCLUSIONS Our findings suggested that meropenem and honey-Cs-NPs might be potential antibacterial and antibiofilm materials.
Collapse
Affiliation(s)
- Sameh Hajimohammadi
- Department of MicrobiologyShahrekord Branch, Islamic Azad UniversityShahrekordIran
| | - Hassan Momtaz
- Department of MicrobiologyShahrekord Branch, Islamic Azad UniversityShahrekordIran
| | - Elahe Tajbakhsh
- Department of MicrobiologyShahrekord Branch, Islamic Azad UniversityShahrekordIran
| |
Collapse
|
2
|
Andrianopoulou A, Sokolowski K, Wenzler E, Bulman ZP, Gemeinhart RA. Assessment of antibiotic release and antibacterial efficacy from pendant glutathione hydrogels using ex vivo porcine skin. J Control Release 2024; 365:936-949. [PMID: 38070603 PMCID: PMC10843833 DOI: 10.1016/j.jconrel.2023.12.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 11/22/2023] [Accepted: 12/03/2023] [Indexed: 12/22/2023]
Abstract
Acute bacterial skin and skin structure infections (ABSSSIs) confer a substantial burden on the healthcare system. Local antibiotic delivery systems can provide controlled drug release directly to the site of infection to maximize efficacy and minimize systemic toxicity. The purpose of this study was to examine the antibacterial activity of antibiotic-loaded glutathione-conjugated poly(ethylene glycol) hydrogels (GSH-PEG) against ABSSSIs utilizing an ex vivo porcine dermal explant model. Vancomycin- or meropenem-loaded GSH-PEG hydrogels at 3 different dose levels were loaded over 1 h. Drug release was monitored in vitro under submerged conditions, by the Franz cell diffusion method, and ex vivo utilizing a porcine dermis model. Antibacterial activity was assessed ex vivo on porcine dermis explants inoculated with Staphylococcus aureus or Pseudomonas aeruginosa isolates treated with vancomycin- or meropenem-loaded GSH-PEG hydrogels, respectively. Histological assessment of the explants was conducted to evaluate tissue integrity and viability in the context of the experimental conditions. A dose-dependent release was observed from vancomycin and meropenem hydrogels, with in vitro Franz cell diffusion data closely representing ex vivo vancomycin release, but not high dose meropenem release. High dose vancomycin-loaded hydrogels resulted in a >3 log10 clearance against all S. aureus isolates at 48 h. High dose meropenem-loaded hydrogels achieved 6.5, 4, and 2 log10 reductions in CFU/ml against susceptible, intermediate, and resistant P. aeruginosa isolates, respectively. Our findings demonstrate the potential application of GSH-PEG hydrogels for flexible, local antibiotic delivery against bacterial skin infections.
Collapse
Affiliation(s)
| | - Karol Sokolowski
- Department of Pharmaceutical Sciences, University of Illinois Chicago, Chicago, IL, USA
| | - Eric Wenzler
- Department of Pharmacy Practice, University of Illinois Chicago, Chicago, IL, USA
| | - Zackery P Bulman
- Department of Pharmacy Practice, University of Illinois Chicago, Chicago, IL, USA
| | - Richard A Gemeinhart
- Department of Pharmaceutical Sciences, University of Illinois Chicago, Chicago, IL, USA; Department of Biomedical Engineering, University of Illinois Chicago, Chicago, IL, USA; Department of Chemical Engineering, University of Illinois Chicago, Chicago, IL, USA; Department of Ophthalmology and Visual Sciences, University of Illinois Chicago, Chicago, IL, USA.
| |
Collapse
|
3
|
Nguyen QK, Duong MN, Nguyen TB, Pham TNM. Visual detection and highly sensitive quantification of antibiotic meropenem in pharmaceutical and human plasma samples using gold nanoparticles. SEP SCI TECHNOL 2023. [DOI: 10.1080/01496395.2023.2189546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
Affiliation(s)
- Quang Khanh Nguyen
- Department of Chemistry, College of Natural Sciences, Hanyang University, Seoul, Korea
- Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, Viet Nam
| | - Minh Ngoc Duong
- Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, Viet Nam
| | - Thi Bang Nguyen
- Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, Viet Nam
| | - Thi Ngoc Mai Pham
- Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, Viet Nam
| |
Collapse
|
4
|
Saekhu M, Susanto E, Handryastuti S, Ashari S, Nugroho S. Spinal dermal sinus coinciding with an infected giant epidermoid cyst in an infant presenting with constipation: a case report. PAEDIATRICA INDONESIANA 2022. [DOI: 10.14238/pi62.5.2022.357-63] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Early diagnosis of spinal tumors is a prerequisite for achieving satisfactory neurological recovery. However, rare diseases tend to have a long diagnostic course.1 In addition, the clinical presentation of spinal tumors in most children is not apparent, moreover, spinal tumors may not show clinical symptoms if they are located in the lumbar spine and sized no more than one vertebra.2,3 Clinical presentations caused by tumors in the lumbar spine may include weakness of both limbs, impaired urination, and constipation.
Collapse
|
5
|
Rajpoot K, Prajapati SK, Malaiya A, Jain R, Jain A. Meropenem-Loaded Nanostructured Lipid Carriers For Skin and Soft Tissue Infection Caused by Staphylococcus aureus: Formulation, Design, and Evaluation. AAPS PharmSciTech 2022; 23:241. [PMID: 36008695 DOI: 10.1208/s12249-022-02381-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 07/25/2022] [Indexed: 11/30/2022] Open
Abstract
AIM Meropenem hydrochloride (MpM)-loaded nanostructured lipid carriers were designed for the effective management of skin infection caused by Staphylococcus aureus via topical route. The solvent evaporation tactic was preferred to develop nanostructured lipid carriers (NLCs). Stearic acid was used as a solid fatty acid; oleic acid was used as liquid fatty acid and Tween 80 as a surfactant. The Staphylococcus aureus burden was analyzed by pharmacodynamic studies. The skin retention was analyzed by fluorescence microscopy. Spherical shape of NLCs was confirmed by TEM. The optimum particle size of the MpM-NLCs was ~ 126.5 ± 0.9 nm with 79.1 ± 2.3% entrapment (EE) and 0.967 mV zeta potential. The in vitro release studies revealed 81.5 ± 3.1% release of drug in 48 h, while the pure drug was almost completely released (98.4 ± 1.4%) within 24 h confirming the potential of NLCs for sustained topical drug delivery. Skin permeation study also revealed better permeation of drug from NLCs than of plain drug. The prepared MpM-NLCs when stored at 4 ± 2°C for 90 days were found to be more stable when the formulation was stored at 28 ± 2°C. The S. aureus burden was analyzed by evaluating the zone of inhibition (ZOI). The ZOI of MpM alone and MpM-NLC gel was measured and compared with that of the control group. The MpM was found significantly effective when its gel was prepared with NLCs because of its enhanced adhesion property occlusion and ability to sustain release. In overall, the study's outcomes validated the relevance of NLC's composition as a vehicle for topical MpM administration in skin diseases caused by Staphylococcus aureus.
Collapse
Affiliation(s)
- Kshipra Rajpoot
- Bhagyoday Tirth Pharmacy College, Sagar, M.P., 470002, India
| | - Shiv Kumar Prajapati
- Institute of Pharmacy, Ram-Eesh Institute of Vocational and Technical Education, Greater Noida, Uttar Pradesh, 201310, India
| | | | - Richa Jain
- Molecular Biotechnology Laboratory, C.S.R.D., People's University, Bhopal, M.P., 462037, India
| | - Aakanchha Jain
- Bhagyoday Tirth Pharmacy College, Sagar, M.P., 470002, India. .,National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gandhinagar, Gujarat, 382355, India.
| |
Collapse
|
6
|
Zhu S, Zhang J, Lv Z, Zhu P, Oo C, Yu M, Sy SKB. Prediction of Tissue Exposures of Meropenem, Colistin, and Sulbactam in Pediatrics Using Physiologically Based Pharmacokinetic Modeling. Clin Pharmacokinet 2022; 61:1427-1441. [PMID: 35947360 DOI: 10.1007/s40262-022-01161-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/20/2022] [Indexed: 01/10/2023]
Abstract
BACKGROUND The combination of polymyxins, meropenem, and sulbactam demonstrated efficacy against multi-drug-resistant bacillus Acinetobacter baumannii. These three antibiotics are commonly used against major blood, skin, lung, and heart muscle infections. OBJECTIVE The objective of this study was to predict drug disposition and extrapolate the efficacy in these tissues using a physiologically based pharmacokinetic modeling approach that linked drug exposures to their target pharmacodynamic indices associated with antimicrobial activities against A. baumannii. METHODS An adult physiologically based pharmacokinetic model was developed for meropenem, colistin, and sulbactam and scaled to pediatrics accounting for both renal and non-renal clearances. The model reliability was evaluated by comparing simulated plasma and tissue drug exposures to observed data. Target pharmacodynamic indices were used to evaluate whether pediatric and adult dosing regimens provided sufficient coverage. RESULTS The modeled plasma drug exposures in adults and pediatric patients were consistent with reported literature data. The mean fold errors for meropenem, colistin, and sulbactam were in the range of 0.710-1.37, 0.981-1.47, and 0.647-1.39, respectively. Simulated exposures in the blood, skin, lung, and heart were consistent with reported penetration rates. In a virtual pediatric population aged from 2 to < 18 years, the interpretive breakpoints were achieved in 85-90% of subjects for their targeted pharmacodynamic indices after administration of pediatric dosing regimens consisting of 30 mg/kg of meropenem, and 40 mg/kg of sulbactam three times daily as a 3-h or continuous infusion and 5 mg/kg/day of colistin base activity. CONCLUSIONS The physiologically based pharmacokinetic modeling supports pediatric dosing regimens of meropenem/colistin/sulbactam in a co-administration setting against infections in the blood, lung, skin, and heart tissues due to A. baumannii.
Collapse
Affiliation(s)
- Shixing Zhu
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, People's Republic of China
| | - Jiayuan Zhang
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, People's Republic of China
| | - Zhihua Lv
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, People's Republic of China.,Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao, People's Republic of China
| | - Peijuan Zhu
- Department of Pharmacology, University of Pennsylvania, Philadelphia, PA, USA
| | - Charles Oo
- SunLife Biopharma, Morris Plains, NJ, USA
| | - Mingming Yu
- School of Medicine and Pharmacy, Ocean University of China, Qingdao, People's Republic of China. .,Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao, People's Republic of China.
| | - Sherwin K B Sy
- Department of Statistics, State University of Maringá, Maringá, Paraná, Brazil.
| |
Collapse
|
7
|
Effects on Tissue Integration of Collagen Scaffolds Used for Local Delivery of Gentamicin in a Rat Mandible Defect Model. Bioengineering (Basel) 2022; 9:bioengineering9070275. [PMID: 35877326 PMCID: PMC9312234 DOI: 10.3390/bioengineering9070275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 06/13/2022] [Accepted: 06/22/2022] [Indexed: 11/17/2022] Open
Abstract
Surgical site infections (SSIs) are a common complication following orthopedic surgery. SSIs may occur secondary to traumatic or contaminated wounds or may result from invasive procedures. The development of biofilms is often associated with implanted materials used to stabilize injuries and to facilitate healing. Regardless of the source, SSIs can be challenging to treat. This has led to the development of devices that act simultaneously as local antibiotic delivery vehicles and as scaffolds for tissue regeneration. The goal for the aforementioned devices is to increase local drug concentration in order to enhance bactericidal activity while reducing the risk of systemic side effects and toxicity from the administered drug. The aims of this study were to assess the effect of antibiotic loading of a collagen matrix on the tissue integration of the matrix using a rat mandibular defect model. We hypothesized that the collagen matrix could load and elute gentamicin, that the collagen matrix would be cytocompatible in vitro, and that the local delivery of a high dose of gentamicin via loaded collagen matrix would negatively impact the tissue–scaffold interface. The results indicate that the collagen matrix could load and elute the antimicrobial gentamicin and that it was cytocompatible in vitro with or without the presence of gentamicin and found no significant impact on the tissue–scaffold interface when the device was loaded with a high dose of gentamicin.
Collapse
|
8
|
Yitayew B, Woldeamanuel Y, Asrat D, Aseffa A, Olsson PE, Mihret A, Jass J. Carbapenemase-producing Aeromonas species isolated from the urban-impacted Akaki river in Ethiopia. JOURNAL OF WATER AND HEALTH 2022; 20:903-914. [PMID: 35768966 DOI: 10.2166/wh.2022.307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Carbapenemase-producing Aeromonas species are an emerging health threat. This study aimed to determine carbapenemase-mediated resistance among Aeromonas isolates from the Akaki river, Ethiopia during the dry and wet seasons in 2019-2020. Antimicrobial susceptibility to carbapenems and cephalosporins was determined and carbapenemase production was confirmed. Of 163 isolates, the majority were human pathogens Aeromonas caviae (62), Aeromonas hydrophila (33) and Aeromonas veronii (49). These isolates were resistant to carbapenem and cephalosporin antibiotics, with the highest resistance to cefotaxime 86 (59.7%), ertapenem 71 (49.3%) and imipenem 65 (45.1%). Resistance to carbapenem antibiotics varied between species, where most A. veronii 37 (75.5%) and A. hydrophila 28 (84.8%) were resistant to imipenem and all A. caviae were sensitive. A. veronii, A. caviae and A. hydrophila resistance to meropenem was 31 (63.3%), 3 (4.8%) and 19 (57.6%), respectively. Of isolates resistant to carbapenem, 82.1% A. hydrophila and 94.4% A. veronii were carbapenemase producers. Cephalosporin resistance also varied among the different species. The highest resistance to carbapenem antibiotics was in isolates collected during the wet season (p<0.05); however, it was not consistent across all classes of antibiotics tested. The rivers in megacities could be reservoirs of carbapenemase-producing Aeromonas spp.
Collapse
Affiliation(s)
- Berhanu Yitayew
- College of Health Sciences, School of Medicine, Addis Ababa University, Addis Ababa, Ethiopia; School of Science and Technology, The Life Science Center - Biology, Örebro University, Örebro, Sweden E-mail:
| | | | - Daniel Asrat
- College of Health Sciences, School of Medicine, Addis Ababa University, Addis Ababa, Ethiopia
| | - Abraham Aseffa
- Armauer Hansen Research Institute, Addis Ababa, Ethiopia
| | - Per-Erik Olsson
- School of Science and Technology, The Life Science Center - Biology, Örebro University, Örebro, Sweden E-mail:
| | - Adane Mihret
- College of Health Sciences, School of Medicine, Addis Ababa University, Addis Ababa, Ethiopia; Armauer Hansen Research Institute, Addis Ababa, Ethiopia
| | - Jana Jass
- School of Science and Technology, The Life Science Center - Biology, Örebro University, Örebro, Sweden E-mail:
| |
Collapse
|
9
|
Darwis I, Hidayat H, Wisnu GNPP, Mentari S. Bacteriological Profile and Antibiotic Susceptibility Pattern of Diabetic Foot Infection in a Tertiary Care Hospital in Lampung, Indonesia. Malays J Med Sci 2022; 28:42-53. [PMID: 35115886 PMCID: PMC8793971 DOI: 10.21315/mjms2021.28.5.4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 05/15/2021] [Indexed: 01/13/2023] Open
Abstract
Background Diabetic foot infection (DFI) is a serious complication of diabetes mellitus and identification of the causative bacteria is an essential step in selecting the appropriate antibiotic therapy. This study aimed to evaluate the bacterial pattern and antibiotic susceptibility of the bacteria causing DFI in Lampung Province in Indonesia. Methods This study is a retrospective study reviewing the medical records of DFI patients admitted to the Dr Hi Abdul Moeloek Regional General Hospital in 2017–2019. DFI patients with complete medical record data were included in this study. Demographic, clinical, laboratory, wound culture and antibiotic susceptibility data were collected from the medical records using a short structural chart. The data obtained then reviewed. Results In this study, 131 DFI patients met the study criteria and were included. Based on the wound culture results, Gram-negative bacteria were obtained in 112 (85.5%) subjects with Enterobacter spp. as the predominant bacteria. Gram-positive bacteria were found in 19 (14.5%) subjects with Staphylococcus spp. as the predominant bacteria. Gram-negative bacteria found in this study showed high susceptibility to amikacin, meropenem and sulbactam/cefoperazone. Meanwhile, the Gram-positive bacteria showed high susceptibility to meropenem, sulbactam/cefoperazone and amikacin. Conclusion The findings of the study revealed Enterobacter spp. as the most predominant bacteria causing DFI in the studied population. The highest antibiotic susceptibility was seen for amikacin, meropenem and sulbactam/cefoperazone.
Collapse
Affiliation(s)
- Iswandi Darwis
- Department of Internal Medicine, Universitas Lampung, Lampung, Indonesia.,Department of Internal Medicine, Dr Hi Abdul Moeloek Regional General Hospital, Lampung, Indonesia
| | - Hidayat Hidayat
- Department of Clinical Pathology, Dr Hi Abdul Moeloek Regional General Hospital, Lampung, Indonesia
| | | | - Sekar Mentari
- Department of Internal Medicine, Dr Hi Abdul Moeloek Regional General Hospital, Lampung, Indonesia
| |
Collapse
|
10
|
Alfouzan W, Al-Balushi Z, Al-Maslamani M, Al-Rashed A, Al-Sabah S, Al-Salman J, Baguneid M, Khamis F, Habashy N, Kurdi A, Eckmann C. Antimicrobial Management of Complicated Skin and Soft Tissue Infections in an Era of Emerging Multi-Drug Resistance: Perspectives from 5 Gulf Countries. JOURNAL OF ACUTE CARE SURGERY 2021. [DOI: 10.17479/jacs.2021.11.3.89] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
The number of complicated skin and soft tissue infections (cSSTIs) in the Arabian Gulf region has risen in recent years, particularly those caused by multi-drug resistant (MDR) pathogens. The high prevalence of diabetes, obesity, and associated cardio-metabolic comorbidities in the region renders medical and surgical management of cSSTI patients with MDR infections challenging. An experienced panel of international and regional cSSTI experts (consensus group on cSSTIs) was convened to discuss clinical considerations for MDR infections from societal, antimicrobial stewardship, and cost perspectives, to develop best practice recommendations. This article discusses antibiotic therapies suitable for treating MDR cSSTIs in patients from the Gulf region and recommends that these should be tailored according to the local bacterial ecology by country and region. The article highlights the need for a comprehensive patient treatment pathway and defined roles of each of the multidisciplinary teams involved with managing patients with MDR cSSTIs. Aligned and inclusive definitions of cSSTIs for clinical and research purposes, thorough and updated epidemiological data on cSSTIs and methicillin-resistant <i>Staphylococcus aureus</i> in the region, clearcut indications of novel agents and comprehensive assessment of comparative data should be factored into decision-making are necessary.
Collapse
|
11
|
Sokolowski K, Pham HM, Wenzler E, Gemeinhart RA. Glutathione-Conjugated Hydrogels: Flexible Vehicles for Personalized Treatment of Bacterial Infections. Pharm Res 2021; 38:1247-1261. [PMID: 34117588 DOI: 10.1007/s11095-021-03057-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 05/10/2021] [Indexed: 10/21/2022]
Abstract
PURPOSE Skin and soft tissue infections are increasingly prevalent and often complicated by potentially fatal therapeutic hurdles, such as poor drug perfusion and antibiotic resistance. Delivery vehicles capable of versatile loading may improve local bioavailability and minimize systemic toxicities yet such vehicles are not clinically available. Therefore, we aimed to expand upon the use of glutathione-conjugated poly(ethylene glycol) GSH-PEG hydrogels beyond protein delivery and evaluate the ability to deliver traditional therapeutic molecules. METHODS PEG and GSH-PEG hydrogels were prepared using ultraviolet light (UV)-polymerization. Hydrogel loading and release of selected drug candidates was examined using UV-visible spectrometry. Therapeutic molecules and GST-fusion protein loading was examined using UV-visible and fluorescent spectrometry. Efficacy of released meropenem was assessed against meropenem-sensitive and -resistant P. aeruginosa in an agar diffusion bioassay. RESULTS For all tested agents, GSH-PEG hydrogels demonstrated time-dependent loading whereas PEG hydrogels did not. GSH-PEG hydrogels released meropenem over 24 h. Co-loading of biologic and traditional therapeutics into a single vehicle was successfully demonstrated. Meropenem-loaded GSH-PEG hydrogels inhibited the growth of meropenem-sensitive and resistant P. aeruginosa isolates. CONCLUSION GSH ligands within GSH-PEG hydrogels allow loading and effective delivery of charged therapeutic agents, in addition to biologic therapeutics.
Collapse
Affiliation(s)
- Karol Sokolowski
- Department of Pharmaceutical Sciences, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Hai M Pham
- Department of Pharmaceutical Sciences, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Eric Wenzler
- Department of Pharmacy Practice, University of Illinois at Chicago, Chicago, Illinois, USA.
| | - Richard A Gemeinhart
- Department of Pharmaceutical Sciences, University of Illinois at Chicago, Chicago, Illinois, USA. .,Department of Bioengineering, University of Illinois at Chicago, Chicago, Illinois, USA. .,Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois, USA. .,Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago, Chicago, Illinois, USA.
| |
Collapse
|
12
|
Turuk J, Das D, Rout SS, Praharaj AK, Bag L, Pati S. Mycobacterium mageritense causing surgical site infection: Case report from Odisha, India. Indian J Med Microbiol 2021; 39:389-391. [PMID: 33994224 DOI: 10.1016/j.ijmmb.2021.04.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 04/12/2021] [Accepted: 04/28/2021] [Indexed: 10/21/2022]
Abstract
A 66-year female presented to the outpatient department (Medicine) of a tertiary care hospital with history of a recurrent sinus with multiple openings after a laparoscopic cholecystectomy surgery one and half years back. The excised tissue from sinus was sent for histopathology showed multiple non-caseating granulomas and was cultured for Mycobacterium. The growth from culture was identified as Mycobacterium mageritense by Line probe assay (LPA). The wound healed after ofloxacin and doxycycline was given for a period of two months. This case focuses the importance of proper diagnosis and treatment of chronic surgical infections keeping in mind the NTM.
Collapse
Affiliation(s)
- Jyotirmayee Turuk
- ICMR-Regional Medical Research Centre, Bhubaneswar, 751023, Odisha, India.
| | - Dasarathi Das
- ICMR-Regional Medical Research Centre, Bhubaneswar, 751023, Odisha, India
| | - Sunil Swick Rout
- ICMR-Regional Medical Research Centre, Bhubaneswar, 751023, Odisha, India
| | | | - L Bag
- PRMMCH, Baripada, Odisha, 757001, India
| | - Sanghamitra Pati
- ICMR-Regional Medical Research Centre, Bhubaneswar, 751023, Odisha, India
| |
Collapse
|
13
|
Srivastava P, Sivashanmugam K. Efficacy of sub-MIC level of meropenem and ciprofloxacin against extensive drug-resistant (XDR) Pseudomonas aeruginosa isolates of diabetic foot ulcer patients. INFECTION GENETICS AND EVOLUTION 2021; 92:104824. [PMID: 33774177 DOI: 10.1016/j.meegid.2021.104824] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 02/10/2021] [Accepted: 03/23/2021] [Indexed: 01/22/2023]
Abstract
The increasing emergence of extensive drug-resistant bacteria (XDR) among chronic diabetic foot ulcer patients (DFU) possess serious threat which leads to foot amputation. The ideal measurement estimations of the presently accessible medications are getting insufficient against extensive drug-resistant strains. For quite a long-time piperacillin monotherapy, Piperacillin-tazobactam, ceftazidime, Carbapenem class of anti-toxin, ceftalozane-Tazobactam, and so on, has been the suggested therapy towards persistent instances of diabetic foot ulcer but because of the resistance mechanism of the potent pathogens the potency and usage of the antibiotic concentration regime is under the radar. Based on this hypothesis two isolates namely VIT PC 7 &VIT PC 9 were found to be resistant to all five classes of antibiotics exhibiting extensive drug resistance (XDR). The whole-genome sequence of Pseudomonas aeruginosa VIT PC 7 and VIT PC 9 data showed the presence of various RND efflux related genes and antibiotic resistance genes. The broth microdilution assay showed minimum inhibitory concentration (MIC) for ciprofloxacin and meropenem, Synergistic test was performed through checkerboard analysis and sub-MIC concentration of ciprofloxacin/meropenem was deduced using ∑ FICI, Time kills analysis was done for varying time interval to check the maximum reduction in CFU/ml of the bacterial cells, sub-MIC level of meropenem and ciprofloxacin showed inhibitory activity at lower concentration respectively. In vitro time-kill analysis showed the decrease in the number of cells, suggesting that the synergistic antimicrobial combinations are effective in decreasing the MIC level, and combinational test involving sub-MIC level of antibiotics also showed maximum reduction in biofilm forming cells, portraying the effectiveness of both the drugs. Accordingly, an expansion in the antimicrobial spectrum can be accomplished by utilizing the ideal measurements of ciprofloxacin/meropenem in persistent condition like diabetic foot ulcer, sub-MIC level of ciprofloxacin/meropenem could be a promising choice for anticipation against the ongoing drug-resistant crisis.
Collapse
Affiliation(s)
- Prakhar Srivastava
- School of BioSciences and Technology, Vellore Institute of Technology, Vellore, 632014, India
| | | |
Collapse
|
14
|
Cellulitis and Sepsis Secondary to Serratia marcescens in a Patient With HIV. INFECTIOUS DISEASES IN CLINICAL PRACTICE 2020. [DOI: 10.1097/ipc.0000000000000791] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
15
|
Srivastava P, Sivashanmugam K. Combinatorial Drug Therapy for Controlling Pseudomonas aeruginosa and Its Association With Chronic Condition of Diabetic Foot Ulcer. INT J LOW EXTR WOUND 2019; 19:7-20. [DOI: 10.1177/1534734619873785] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Diabetic foot ulcer (DFU) is a major complication of diabetes mellitus, major observations of DFU cases have reported on amputation of foot region, and microbial bioburden during DFU is a major cause that affects healing of the wound regions. Pathogenic microbes are routinely isolated from these wound regions, especially Staphylococcus, Pseudomonas, Klebsiella, and Escherichia coli have been reported, whereas higher prevalence of Pseudomonas species during chronic condition in the deeper part of the wound, when left untreated, leads to gangrene. Multiple drug-resistant Pseudomonas strains are a new threat because of their biofilm-forming ability, making it more potent and incurable. Acyl homoserine lactones (AHL) are a group of signaling molecules that can regulate biofilm growth, and Las and Rhl operon generally work in tandem to initiate biofilm formation by Pseudomonas species. These signaling molecules also initiate virulence factors that correlates upregulation of inflammatory responses, and AHL can be a therapeutic target in order to prevent the efficacy of multiple drug-resistant strains that form biofilm and also can be an alternative solution against control of multiple drug-resistant strains.
Collapse
|
16
|
Živković Zarić RS, Pejčić AV, Janković SM, Kostić MJ, Milosavljević MN, Milosavljević MJ, Opančina VD. Antimicrobial treatment of Kocuria kristinae invasive infections: Systematic review. J Chemother 2019; 31:109-119. [DOI: 10.1080/1120009x.2018.1542551] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
| | - Ana V. Pejčić
- Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | | | - Marina J. Kostić
- Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | | | | | | |
Collapse
|
17
|
Parruti G, Frattari A, Polilli E, Savini V, Sciacca A, Consorte A, Cibelli DC, Agostinone A, Di Masi F, Pieri A, Cacciatore P, Di Iorio G, Fazii P, Spina T. Cure of recurring Klebsiella pneumoniae carbapenemase-producing Klebsiella pneumoniae septic shock episodes due to complicated soft tissue infection using a ceftazidime and avibactam-based regimen: a case report. J Med Case Rep 2019; 13:20. [PMID: 30665450 PMCID: PMC6341597 DOI: 10.1186/s13256-018-1934-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 11/25/2018] [Indexed: 02/05/2023] Open
Abstract
Background Infections caused by multidrug-resistant Enterobacteriaceae are hard to treat and life-threatening due to reduced therapeutic options. Systemic infections caused by Klebsiella pneumoniae carbapenemase-producing Klebsiella pneumoniae strains have increased in many European regions, becoming frequent in many clinical settings, and are associated with high mortality. The co-formulation of ceftazidime, a third-generation cephalosporin, with avibactam, a new suicide inhibitor beta-lactamase inhibitor able to block most Klebsiella pneumoniae carbapenemases, has been recently licensed, with promising results in patients with limited or absent therapeutic options. Little is known, however, as to the efficacy of such a combination in patients with soft tissue infections caused by multidrug-resistant Klebsiella pneumoniae carbapenemase-producing strains of Klebsiella pneumoniae. Case presentation A Caucasian 53-year-old man with paraplegia suffered multiple vertebral fractures due to a car crash. He was treated with external fixators that became infected early after insertion and were repeatedly and inefficiently treated with multiple antibiotics. He suffered repeated septic episodes caused by Klebsiella pneumoniae carbapenemase-producing Klebsiella pneumoniae strains with a multidrug-resistant profile. Meropenem, tigecycline, and colistin combinations allowed only temporary improvements, but septic shock episodes recurred, in spite of removal of infected external fixators. After approval of pre-marketing prescription by our local Ethics Committee, full clinical resolution was obtained with a compassionate treatment using meropenem and ceftazidime/avibactam in combination for 16 days. Conclusions Our experience provides additional evidence that ceftazidime/avibactam, possibly in combination with meropenem rescued by avibactam, may be an efficacious treatment option also for complicated skin and soft tissue infections caused by multidrug-resistant strains of Klebsiella pneumoniae carbapenemase-producing Klebsiella pneumoniae.
Collapse
Affiliation(s)
- Giustino Parruti
- Infectious Diseases Unit, Pescara General Hospital, Via Fonte Romana 8, 65124, Pescara, Italy.
| | - Antonella Frattari
- Anaesthesia and Intensive Care Unit, Pescara General Hospital, Pescara, Italy
| | - Ennio Polilli
- Clinical Pathology Unit, Pescara General Hospital, Pescara, Italy
| | - Vincenzo Savini
- Microbiology and Virology Unit, Pescara General Hospital, Pescara, Italy
| | - Antonina Sciacca
- Infectious Diseases Unit, Pescara General Hospital, Via Fonte Romana 8, 65124, Pescara, Italy
| | - Augusta Consorte
- Infectious Diseases Unit, Pescara General Hospital, Via Fonte Romana 8, 65124, Pescara, Italy
| | | | - Adriana Agostinone
- Infectious Diseases Unit, Pescara General Hospital, Via Fonte Romana 8, 65124, Pescara, Italy
| | - Francesco Di Masi
- Infectious Diseases Unit, Pescara General Hospital, Via Fonte Romana 8, 65124, Pescara, Italy
| | - Alessandro Pieri
- Infectious Diseases Unit, Pescara General Hospital, Via Fonte Romana 8, 65124, Pescara, Italy
| | - Pierluigi Cacciatore
- Infectious Diseases Unit, Pescara General Hospital, Via Fonte Romana 8, 65124, Pescara, Italy
| | | | - Paolo Fazii
- Microbiology and Virology Unit, Pescara General Hospital, Pescara, Italy
| | - Tullio Spina
- Anaesthesia and Intensive Care Unit, Pescara General Hospital, Pescara, Italy
| |
Collapse
|
18
|
Leong HN, Kurup A, Tan MY, Kwa ALH, Liau KH, Wilcox MH. Management of complicated skin and soft tissue infections with a special focus on the role of newer antibiotics. Infect Drug Resist 2018; 11:1959-1974. [PMID: 30464538 PMCID: PMC6208867 DOI: 10.2147/idr.s172366] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Complicated skin and soft tissue infections (cSSTIs) represent the severe form of infectious disease that involves deeper soft tissues. Involvement of methicillin-resistant Staphylococcus aureus (MRSA) further complicates cSSTI with increased hospitalization, health care costs, and overall mortality. Various international guidelines provide recommendations on the management of cSSTIs, with the inclusion of newer antibiotics. This literature-based review discusses the overall management of cSSTI, including appropriate use of antibiotics in clinical practice. Successful treatment of cSSTIs starts with early and precise diagnosis, including identification of causative pathogen and its load, determination of infection severity, associated complications, and risk factors. The current standard-of-care for cSSTIs involves incision, drainage, surgical debridement, broad-spectrum antibiotic therapy, and supportive care. In recent years, the emergence of newer antibiotics (eg, ceftaroline, tigecycline, daptomycin, linezolid, etc) has provided clinicians wider options of antimicrobial therapy. Selection of antibiotics should be based on the drug characteristics, effectiveness, safety, and treatment costs, alongside other aspects such as host factors and local multidrug resistance rates. However, larger studies on newer antibiotics are warranted to refine the decision making on the appropriate antimicrobial therapy. Local Antimicrobial Stewardship Program strategies in health care settings could guide clinicians for early initiation of specific treatments to combat region-specific antimicrobial resistance, minimize adverse effects, and to improve outcomes such as reduction in Clostridium difficile infections. These strategies involving iv-to-oral switch, de-escalation to narrow-spectrum antibiotics, and dose optimization have an impact on the overall improvement of cSSTI therapy outcomes, especially in countries like Singapore that has a high disease burden.
Collapse
Affiliation(s)
- Hoe Nam Leong
- Rophi Clinic, Mount Elizabeth Novena Specialist Centre, Singapore, Singapore,
| | - Asok Kurup
- Infectious Diseases Care Private Ltd, Mount Elizabeth Medical Centre, Singapore, Singapore
| | - Mak Yong Tan
- My Orthopaedic Clinic, Gleneagles Medical Centre, Singapore, Singapore
| | - Andrea Lay Hoon Kwa
- Department of Pharmacy, Singapore General Hospital, Singapore, Singapore.,Emerging Infectious Diseases Program, Duke-National University of Singapore Medical School, Singapore, Singapore
| | - Kui Hin Liau
- LIAU KH Specialist Clinic, Mount Elizabeth Novena Specialist Centre, Singapore, Singapore
| | - Mark H Wilcox
- Department of Medical Microbiology, Leeds Teaching Hospitals and University of Leeds, Leeds, UK
| |
Collapse
|
19
|
Nhi TT, Khon HC, Hoai NTT, Bao BC, Quyen TN, Van Toi V, Hiep NT. Fabrication of electrospun polycaprolactone coated withchitosan-silver nanoparticles membranes for wound dressing applications. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2016; 27:156. [PMID: 27620739 DOI: 10.1007/s10856-016-5768-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Accepted: 08/24/2016] [Indexed: 06/06/2023]
Abstract
In this study, electrospun polycaprolactone membrane coated with chitosan-silver nanoparticles (CsAg), electrospun polycaprolactone/chitosan/Ag nanoparticles, was fabricated by immersing the plasma-treated electrospun polycaprolactone membrane in the CsAg gel. The plasma modification of electrospun polycaprolactone membrane prior to CsAg coating was tested by methylene blue stain and scanning electron microscope. The presence of silver and chitosan on the plasma-treated electrospun polycaprolactone membrane was confirmed by energy-dispersive X-ray spectroscopy and FT-IR spectrum. Scanning electron microscope observation was employed to observe the morphology of the membranes. The release of Ag ions from electrospun polycaprolactone/chitosan/Ag nanoparticles membrane was tested using atomic absorption spectrometry. Electrospun polycaprolactone/chitosan/Ag nanoparticles membrane inherited advantages from both CsAg gel and electrospun polycaprolactone membrane such as: increasing biocompatibility, mechanical strength, and antibacterial activity against both Gram-negative and Gram-positive bacteria. Thus, this investigation introduces a highly potential membrane that can increase the efficacy of the wound dressing process.
Collapse
Affiliation(s)
- Tra Thanh Nhi
- Tissue Engineering and Regenerative Medicine Group, Department of Biomedical Engineering, International University, Vietnam National University-Ho Chi Minh City (VNU-HCM), HCMC, 700000, Vietnam
| | - Huynh Chan Khon
- Tissue Engineering and Regenerative Medicine Group, Department of Biomedical Engineering, International University, Vietnam National University-Ho Chi Minh City (VNU-HCM), HCMC, 700000, Vietnam
| | - Nguyen Thi Thu Hoai
- School of Biotechnology, International University, Vietnam National University-Ho Chi Minh City (VNU-HCM), HCMC, 700000, Vietnam
| | - Bui Chi Bao
- The Center for Molecular Biomedicine, University of Medicine and Pharmacy, HCMC, 700000, Vietnam
| | - Tran Ngoc Quyen
- Department - Materiasl and Pharmaceutical chemistry, Institute of Applied Materials Science-Vietnam Academy of Science and Technology, VAST, HCMC, 700000, Vietnam
| | - Vo Van Toi
- Tissue Engineering and Regenerative Medicine Group, Department of Biomedical Engineering, International University, Vietnam National University-Ho Chi Minh City (VNU-HCM), HCMC, 700000, Vietnam
| | - Nguyen Thi Hiep
- Tissue Engineering and Regenerative Medicine Group, Department of Biomedical Engineering, International University, Vietnam National University-Ho Chi Minh City (VNU-HCM), HCMC, 700000, Vietnam.
| |
Collapse
|
20
|
Khanyase S, Naicker T, Maguire GE, Kruger HG, Arvidsson PI, Govender T. l-Proline organocatalyzed Michael synthesis of monobactam and carbapenem β-lactam cores. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.tetasy.2014.05.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
21
|
Bassetti M, Baguneid M, Bouza E, Dryden M, Nathwani D, Wilcox M. European perspective and update on the management of complicated skin and soft tissue infections due to methicillin-resistant Staphylococcus aureus after more than 10 years of experience with linezolid. Clin Microbiol Infect 2014; 20 Suppl 4:3-18. [DOI: 10.1111/1469-0691.12463] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|