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Cui XQ, Zhang LW, Zhao P, Feng JJ. Efficacy and safety of carrimycin in ten patients with severe pneumonia following solid organ transplantation. World J Clin Cases 2024; 12:2542-2550. [PMID: 38817218 PMCID: PMC11135438 DOI: 10.12998/wjcc.v12.i15.2542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 02/24/2024] [Accepted: 03/28/2024] [Indexed: 05/14/2024] Open
Abstract
BACKGROUND The number of patients undergoing solid organ transplantation has increased annually. However, infections in solid organ transplant recipients can have a severe effect on patient survival owing to the continued use of immunosuppressants. Carrimycin is a novel macrolide antibiotic produced by genetically engineered streptomyces spiramyceticus harboring a 4''-O-isovaleryltransferase gene (ist) from streptomyces thermotoleran. Carrimycin has good antibacterial and antiviral effects. However, no relevant studies have been conducted on the efficacy and safety of carrimycin in patients with severe pneumonia (SP) after solid organ transplantation. AIM To explore the efficacy and safety of carrimycin in patients with SP after solid organ transplantation to provide a medication reference for clinical treatment. METHODS In March 2022, ten patients with SP following solid-organ transplantation were treated at our hospital between January 2021 and March 2022. When the condition was critical and difficult to control with other drugs, carrimycin was administered. These ten patients' clinical features and treatment protocols were retrospectively analyzed, and the efficacy and safety of carrimycin for treating SP following solid organ transplantation were evaluated. RESULTS All ten patients were included in the analysis. Regarding etiological agent detection, there were three cases of fungal pneumonia, two cases of bacterial pneumonia, two cases of Pneumocystis pneumonia, and three cases of mixed infections. After treatment with carrimycin, the disease in seven patients significantly improved, the course of the disease was significantly shortened, fever was quickly controlled, chest computed tomography was significantly improved, and oxygenation was significantly improved. Finally, the patients were discharged after curing. One patient died of acute respiratory distress syndrome, and two patients discontinued treatment. CONCLUSION Carrimycin is a safe and effective treatment modality for SP following solid organ transplantation. Carrimycin may have antibacterial and antiviral effects in patients with SP following solid organ transplantation.
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Affiliation(s)
- Xian-Quan Cui
- Department of Organ Transplantation, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
| | - Lu-Wei Zhang
- Department of Blood Purification, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
| | - Peng Zhao
- Department of Organ Transplantation, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
| | - Jing-Jing Feng
- Department of Blood Purification, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
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Li G, Guo QF, Zhao SP, Wang MW, Zhang X, Wang A, Gui CF, Tan QL, Gao Q. Investigation of preoperative physical activity level in kidney transplant recipients and its impact on early postoperative recovery: A retrospective cohort study. Front Surg 2023; 9:1062652. [PMID: 36684240 PMCID: PMC9852711 DOI: 10.3389/fsurg.2022.1062652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 11/21/2022] [Indexed: 01/07/2023] Open
Abstract
Objective To retrospectively investigate the preoperative physical activity (PA) level in kidney transplant recipients (KTRs) and its impact on early postoperative recovery. Methods A total of 113 patients who received kidney transplantation at West China Hospital of Sichuan University were enrolled in this retrospective cohort study. According to the PA level measured by the Chinese version of the International Physical Activity Questionnaire-Long Version, the patients were allocated into the low PA level group (Group L, n = 55) and medium to high PA level group (Group MH, n = 58). The kidney function recovery indicators, including estimated glomerular filtration rate (eGFR), postoperative complications, postoperative length of stay (LOS), and unscheduled readmission within three months of discharge, were evaluated and documented. A association analysis was applied to analyze and compare the association between indicators. Results The median PA levels of the KTRs were 1701.0 MTEs * min/week. Regarding the postoperative recovery indicators, the KTRs spent a mean time of 19.63 h to achieve transfer out of bed after the operation (Group L: 19.67 h; Group MH: 19.53 h; P = 0.952) and reached a mean distance of 183.10 m as the best ambulatory training score within two days after the operation (Group L: 134.91 m; Group MH: 228.79 m; P < 0.001). The preoperative PA level showed a moderate positive association with early postoperative ambulation distance (ρ = 0.497, P < 0.001). However, no significant between-group difference in eGFR on postoperative days 1, 3, and 5 (P = 0.913, 0.335, and 0.524) or postoperative complications, including DGF (P = 0.436), infection (P = 0.479), postoperative LOS (P = 0.103), and unscheduled readmission (P = 0.698), was found. Conclusions The preoperative PA level of KTRs is lower than that of the general population. KTRs with moderate or high preoperative PA levels showed higher ambulatory function in the early postoperative period than those with low preoperative PA levels, but no between-group differences in other early recovery indicators were observed.
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Affiliation(s)
- Guo Li
- Department of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, People's Rublic of China,Key Laboratory of Rehabilitation Medicine in Sichuan Province, West China Hospital, Sichuan University, Chengdu, China
| | - Qi-fan Guo
- Department of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, People's Rublic of China,Key Laboratory of Rehabilitation Medicine in Sichuan Province, West China Hospital, Sichuan University, Chengdu, China
| | - Shang-ping Zhao
- Centre of Kidney Transplantation, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, China
| | - Miao-wei Wang
- Department of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, People's Rublic of China,Key Laboratory of Rehabilitation Medicine in Sichuan Province, West China Hospital, Sichuan University, Chengdu, China
| | - Xia Zhang
- Department of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, People's Rublic of China,Key Laboratory of Rehabilitation Medicine in Sichuan Province, West China Hospital, Sichuan University, Chengdu, China
| | - Ao Wang
- Department of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, People's Rublic of China,Key Laboratory of Rehabilitation Medicine in Sichuan Province, West China Hospital, Sichuan University, Chengdu, China
| | - Chen-fan Gui
- Department of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, People's Rublic of China,Key Laboratory of Rehabilitation Medicine in Sichuan Province, West China Hospital, Sichuan University, Chengdu, China
| | - Qi-ling Tan
- Centre of Kidney Transplantation, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, China
| | - Qiang Gao
- Department of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, People's Rublic of China,Key Laboratory of Rehabilitation Medicine in Sichuan Province, West China Hospital, Sichuan University, Chengdu, China,Correspondence: Qiang Gao
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Sitjar-Suñer M, Suñer-Soler R, Bertran-Noguer C, Masià-Plana A, Romero-Marull N, Reig-Garcia G, Alòs F, Patiño-Masó J. Mortality and Quality of Life with Chronic Kidney Disease: A Five-Year Cohort Study with a Sample Initially Receiving Peritoneal Dialysis. Healthcare (Basel) 2022; 10:healthcare10112144. [PMID: 36360484 PMCID: PMC9690964 DOI: 10.3390/healthcare10112144] [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: 09/26/2022] [Revised: 10/17/2022] [Accepted: 10/22/2022] [Indexed: 11/29/2022] Open
Abstract
The quality of life, morbidity and mortality of people receiving renal replacement therapy is affected both by the renal disease itself and its treatment. The therapy that best improves renal function and quality of life is transplantation. Objectives: To study the quality of life, morbidity and mortality of people receiving renal replacement therapy over a five-year period. Design: A longitudinal multicentre study of a cohort of people with chronic kidney disease. Methods: Patients from the Girona health area receiving peritoneal dialysis were studied, gathering data on sociodemographic and clinical variables through an ad hoc questionnaire, quality of life using the SF-36 questionnaire, and social support with the MOS scale. Results: Mortality was 47.2%. Physical functioning was the variable that worsened most in comparison with the first measurement (p = 0.035). Those receiving peritoneal dialysis (p = 0.068) and transplant recipients (p = 0.083) had a better general health perception. The social functioning of transplant recipients improved (p = 0.008). Conclusions: People with chronic kidney disease had a high level of mortality. The dimension of physical functioning worsens over the years. Haemodialysis is the therapy that most negatively effects general health perception. Kidney transplantation has a positive effect on the dimensions of energy/vitality, social functioning and general health perception.
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Affiliation(s)
- Miquel Sitjar-Suñer
- Primary Health Centre, Institut Català de la Salut, 17800 Olot, Spain
- Nursing Department, University of Girona, 17003 Girona, Spain
| | - Rosa Suñer-Soler
- Nursing Department, University of Girona, 17003 Girona, Spain
- Health and Health Care Research Group, Department of Nursing, University of Girona, 17003 Girona, Spain
- Correspondence:
| | - Carme Bertran-Noguer
- Nursing Department, University of Girona, 17003 Girona, Spain
- Health and Health Care Research Group, Department of Nursing, University of Girona, 17003 Girona, Spain
| | - Afra Masià-Plana
- Nursing Department, University of Girona, 17003 Girona, Spain
- Health and Health Care Research Group, Department of Nursing, University of Girona, 17003 Girona, Spain
| | | | - Glòria Reig-Garcia
- Nursing Department, University of Girona, 17003 Girona, Spain
- Health and Health Care Research Group, Department of Nursing, University of Girona, 17003 Girona, Spain
| | - Francesc Alòs
- Primary Health Centre, Passeig de Sant Joan, Institut Català de la Salut, 08010 Barcelona, Spain
| | - Josefina Patiño-Masó
- Nursing Department, University of Girona, 17003 Girona, Spain
- Quality of Life Research Institute, University of Girona, 17003 Girona, Spain
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The Association between Regulatory T Cell Subpopulations and Severe Pneumonia Post Renal Transplantation. J Immunol Res 2022; 2022:8720438. [PMID: 35437510 PMCID: PMC9013297 DOI: 10.1155/2022/8720438] [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: 10/24/2021] [Revised: 03/05/2022] [Accepted: 03/10/2022] [Indexed: 11/18/2022] Open
Abstract
Severe pneumonia accounts for the majority of morbidity and mortality in renal allograft recipients due to immunosuppressant maintenance. Regulatory T cells (Tregs), which are involved in tackling infections under immunosuppressive conditions, are rarely uncovered. We aimed to investigate the relationship between various Treg subpopulations and severe pneumonia after kidney transplantation (KTx). KTx recipients with pneumonia were divided into severe pneumonia and mild pneumonia groups. The frequencies and absolute numbers (Ab No.) of total Tregs (CD4+CD25+FoxP3+), six subsets of Tregs (Helios+/-, CD39+/-, and CD45RA+/-), and T cells, B cells, and NK cells were assessed from peripheral blood via flow cytometry using the
or Mann-Whitney test and receiver operating curve analysis. We also determined the median fluorescence intensity (MFI) of human leukocyte antigen- (HLA-) DR on monocytes and CD64 on neutrophils. Logistic regression was used to identify the risk factors of disease progression, and Pearson’s correlation analysis was performed to identify relationships between the measured immune indices and patients’ clinical information. Our research indicated that Treg subpopulations were strongly associated with severe pneumonia progression post KTx. Based on the monitoring of Treg subpopulations, better-individualized prevention and therapy might be achieved for patients with severe pneumonia post KTx.
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Tantranont N, Hebert S, Truong LD. Vancomycin Nephrotoxicity Causing Renal Transplant Acute Kidney Injury. Transplant Proc 2021; 53:2913-2917. [PMID: 34728076 DOI: 10.1016/j.transproceed.2021.09.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 09/24/2021] [Indexed: 10/19/2022]
Abstract
Nephrotoxicity is a rather frequent side effect of vancomycin treatment. Attributes of vancomycin nephrotoxicity (VN) are well documented, including its clinical manifestations and renal morphologic changes. However, VN has not been emphasized as the cause of acute kidney injury (AKI) in the renal transplant setting. We report the first 3 such cases. In each of these cases, AKI developed concurrently with vancomycin treatment and resolved after its cessation. As compared with the general population, VN in the renal transplant setting displayed some unusual clinical behaviors. Its development was rather capricious, being noted in some but not every episode of vancomycin treatment, even in the same individual. AKI developed gradually in conjunction with protracted vancomycin treatment, in contrast to a precipitous course in the nontransplant setting. However, renal transplant biopsies showed typical features of VN in each case. VN is an unusual but now well-documented cause of AKI in renal transplant recipients. VN in this setting may display some atypical features, setting it apart from that in the general population. However, renal transplant biopsy changes are characteristic and are amenable to a definitive diagnosis.
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Affiliation(s)
- Ngoentra Tantranont
- Department of Pathology and Genomic Medicine, The Houston Methodist Hospital, Houston, Texas; Department of Pathology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Sean Hebert
- Department of Medicine, Section of Nephrology, The Houston Methodist Hospital, Houston, Texas
| | - Luan D Truong
- Department of Pathology and Genomic Medicine, The Houston Methodist Hospital, Houston, Texas.
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Kang Y, Chen Y, Zhang Z, Shen H, Zhou W, Wu C. A case of peritoneal dialysis-associated peritonitis caused by Rhodococcus kroppenstedtii. BMC Infect Dis 2021; 21:565. [PMID: 34120601 PMCID: PMC8201711 DOI: 10.1186/s12879-021-06280-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 06/03/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Rhodococcus kroppenstedtii is an aerobic, gram-positive bacterium firstly identified in the environment, which has not been reported in human-related infection. Herein, we reported the first case of peritoneal dialysis (PD)-associated peritonitis caused by R. kroppenstedtii which was identified by whole genome sequencing. CASE PRESENTATION A 69-year-old man was admitted to hospital with abdominal pain and fever. Over the last 2 years, he had been undergoing continuous ambulatory peritoneal dialysis (CAPD) due to end-stage renal disease. Clinical symptom and sign in combination with laboratory examinations supported the clinical diagnosis of PD-associated peritonitis. Thus, ceftizoxime and teicoplanin were empirically used after PD effluent was collected for bacterial culture. A gram-positive bacterium was found from the PD effluent culture, which could not be identified by either Vitek 2 Compact ANC card or matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. The strain was finally confirmed to be R. kroppenstedtii by whole genome sequencing (WGS) through the average nucleotide identity (ANI) analysis. With a continuous treatment with teicoplanin and imipenem for 15 days and intraperitoneal catheter removed, the infection symptom was improved evidenced by a normal body temperature, also with white blood cell count (WBC), procalcitonin (PCT) and C-reactive protein (CRP) dropped to normal levels. Peritoneal dialysis effluent culture showed a negative result. Then, hemodialysis and arteriovenous fistula angioplasty were performed, but the patient developed a progressive blood pressure loss, accompanied by multiple organ disorder, and died on Feb 25, 2020. CONCLUSIONS To the best of our knowledge, this is the first time to report a peritoneal dialysis-associated peritonitis caused by R. kroppenstedtii which was identified by average nucleotide identity analysis based on WGS.
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Affiliation(s)
- Yi Kang
- Department of Infectious Diseases, Nanjing Drum Tower Hospital, Clinical College of Nanjing Medical University, 321# Zhongshan Road, Gulou District, Nanjing City, Jiangsu Province, 210008, P. R. China
| | - Yuxin Chen
- Department of Laboratory Medicine, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, 210008, P. R. China
| | - Zhifeng Zhang
- Department of Laboratory Medicine, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, 210008, P. R. China
| | - Han Shen
- Department of Laboratory Medicine, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, 210008, P. R. China
| | - Wanqing Zhou
- Department of Laboratory Medicine, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, 210008, P. R. China.
| | - Chao Wu
- Department of Infectious Diseases, Nanjing Drum Tower Hospital, Clinical College of Nanjing Medical University, 321# Zhongshan Road, Gulou District, Nanjing City, Jiangsu Province, 210008, P. R. China.
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7
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Salinas MB, Fenoy S, Magnet A, Vaccaro L, Gomes TD, Hurtado C, Ollero D, Valdivieso E, Del Águila C, Pozuelo MJ, Izquierdo F. Are pathogenic Legionella non-pneumophila a common bacteria in Water Distribution Networks? WATER RESEARCH 2021; 196:117013. [PMID: 33813251 DOI: 10.1016/j.watres.2021.117013] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 02/16/2021] [Accepted: 03/04/2021] [Indexed: 05/22/2023]
Abstract
The present study analyzes at the national level, the presence of circulating Legionella in the artificial aquatic systems of different facilities of all of them state-owned centers throughout Spain for 12 months. 1754 water samples from various state-owned centers were collected from January to December 2014. Samples were collected from the cooling towers and evaporative condensers (CTC), and water distribution networks such as domestic hot water (DHW), cold water for human consumption (CW), sprinkler irrigation systems (SIS), fire sprinkler systems (FSS), and water from decorative fountains (DF). All these facilities are considered, according to current regulations, as potential amplifying systems for bacteria and possible sources of infection by the generation of droplets and aerosols. The isolation and counting of Legionella in water samples was carried out using microbiological culture following the international normative UNE-EN-ISO 11,731:2007 (ISO 11,731:1998) and UNE-EN ISO 8199:2008 (ISO 8199:2005).The quantification of Legionella colonization, the annual distribution, and the geographical distribution of the Legionella isolates recovered in the water were analyzed. Besides, molecular techniques were used for the characterization of the Legionella non-pneumophila isolates. Legionella was recovered from 15.79% of the analyzed water samples. High colonization was more frequently detected in water samples from CTC, DHW, CW, and DF. Regarding the geographic distribution, positive samples of Legionella were obtained in 14 of the 18 Spanish locations analyzed. Legionella non-pneumophila was the most prevalent and was isolated from water samples from 13 different geographical locations (72%). Legionella anisa and Legionella jordanis were the most frequently non-pneumophila species isolated. Legionella donaldsonii was isolated for the first time in the water distribution networks in Spain. Legionella pneumophila sg 2-14 was detected in 13 locations and Legionella pneumophila sg 1 in 11 locations. Therefore, our study concludes that the presence of Legionella pneumophila and Legionella non-pneumophila species in these systems can be a potential threat to public health and should be examined thoroughly with complementary techniques, such as molecular techniques as a screen for routine diagnosis.
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Affiliation(s)
- Mireya Beatriz Salinas
- Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, 28660 Boadilla del Monte, Madrid, España
| | - Soledad Fenoy
- Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, 28660 Boadilla del Monte, Madrid, España
| | - Angela Magnet
- Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, 28660 Boadilla del Monte, Madrid, España
| | - Lucianna Vaccaro
- Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, 28660 Boadilla del Monte, Madrid, España
| | - Thiago Ds Gomes
- Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, 28660 Boadilla del Monte, Madrid, España
| | - Carolina Hurtado
- Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, 28660 Boadilla del Monte, Madrid, España
| | - Dolores Ollero
- Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, 28660 Boadilla del Monte, Madrid, España
| | - Elizabeth Valdivieso
- Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, 28660 Boadilla del Monte, Madrid, España
| | - Carmen Del Águila
- Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, 28660 Boadilla del Monte, Madrid, España
| | - María José Pozuelo
- Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, 28660 Boadilla del Monte, Madrid, España
| | - Fernando Izquierdo
- Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, 28660 Boadilla del Monte, Madrid, España.
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8
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Yang X, Ren H, Zhang H, Liu G, Jiang Z, Qiu Q, Yu C, Murthy N, Zhao K, Lovell JF, Zhang Y. Antibiotic Cross-linked Micelles with Reduced Toxicity for Multidrug-Resistant Bacterial Sepsis Treatment. ACS APPLIED MATERIALS & INTERFACES 2021; 13:9630-9642. [PMID: 33616382 DOI: 10.1021/acsami.0c21459] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
One potential approach to address the rising threat of antibiotic resistance is through novel formulations of established drugs. We designed antibiotic cross-linked micelles (ABC-micelles) by cross-linking the Pluronic F127 block copolymers with an antibiotic itself, via a novel one-pot synthesis in aqueous solution. ABC-micelles enhanced antibiotic encapsulation while also reducing systemic toxicity in mice. Using colistin, a hydrophilic, potent ″last-resort" antibiotic, ABC-micelle encapsulation yield was 80%, with good storage stability. ABC-micelles exhibited an improved safety profile, with a maximum tolerated dose of over 100 mg/kg colistin in mice, at least 16 times higher than the free drug. Colistin-induced nephrotoxicity and neurotoxicity were reduced in ABC-micelles by 10-50-fold. Despite reduced toxicity, ABC-micelles preserved bactericidal activity, and the clinically relevant combination of colistin and rifampicin (co-loaded in the micelles) showed a synergistic antimicrobial effect against antibiotic-resistant strains of Escherichia coli, Pseudomonas aeruginosa, and Acinetobacter baumannii. In a mouse model of sepsis, colistin ABC-micelles showed equivalent efficacy as free colistin but with a substantially higher therapeutic index. Microscopic single-cell imaging of bacteria revealed that ABC-micelles could kill bacteria in a more rapid manner with distinct cell membrane disruption, possibly reflecting a different antimicrobial mechanism from free colistin. This work shows the potential of drug cross-linked micelles as a new class of biomaterials formed from existing antibiotics and represents a new and generalized approach for formulating amine-containing drugs.
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Affiliation(s)
- Xingyue Yang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P. R. China
- Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin, 300350, P. R. China
| | - He Ren
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P. R. China
- Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin, 300350, P. R. China
| | - Hong Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P. R. China
- Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin, 300350, P. R. China
| | - Gengqi Liu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P. R. China
- Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin, 300350, P. R. China
| | - Zhen Jiang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P. R. China
- Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin, 300350, P. R. China
| | - Qian Qiu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P. R. China
- Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin, 300350, P. R. China
| | - Cui Yu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P. R. China
- Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin, 300350, P. R. China
| | - Niren Murthy
- Department of Bioengineering, University of California Berkeley, Berkeley, California 94720, United States
| | - Kun Zhao
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P. R. China
- Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin, 300350, P. R. China
| | - Jonathan F Lovell
- Department of Biomedical Engineering, The State University of New York at Buffalo, Buffalo, New York 14260, United States
| | - Yumiao Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P. R. China
- Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin, 300350, P. R. China
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9
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Souai N, Zidi O, Mosbah A, Kosai I, Manaa JE, Mokhtar NB, Asimakis E, Stathopoulou P, Cherif A, Tsiamis G, Kouidhi S. Impact of the Post-Transplant Period and Lifestyle Diseases on Human Gut Microbiota in Kidney Graft Recipients. Microorganisms 2020; 8:microorganisms8111724. [PMID: 33158078 PMCID: PMC7694191 DOI: 10.3390/microorganisms8111724] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 10/28/2020] [Accepted: 10/30/2020] [Indexed: 12/11/2022] Open
Abstract
Gaining long-term graft function and patient life quality remain critical challenges following kidney transplantation. Advances in immunology, gnotobiotics, and culture-independent molecular techniques have provided growing insights into the complex relationship of the microbiome and the host. However, little is known about the over time-shift of the gut microbiota in the context of kidney transplantation and its impact on both graft and health stability. Here we aimed to characterize the structure of gut microbiota within stable kidney graft recipients. We enrolled forty kidney transplant patients after at least three months of transplantation and compared them to eighteen healthy controls. The overall microbial community structure of the kidney transplanted group was clearly different from control subjects. We found lower relative abundances of Actinobacteria, Bacteroidetes, and Verrucomicrobia within the patient group and a higher abundance of Proteobacteria compared to the control group. Both richness and Shannon diversity indexes were significantly lower in the kidney graft recipients than in healthy controls. Post-graft period was positively correlated with the relative abundance of the Proteobacteria phylum, especially Escherichia.Shigella genus. Interestingly, only Parabacteroides was found to significantly differentiate patients that were not suffering from lifestyle diseases and those who suffer from post-graft complications. Furthermore, network analysis showed that the occurrence of lifestyle diseases was significantly linked with a higher number of negative interactions of Sutterella and Succinivibrio genera within patients. This study characterizes gut microbiome fluctuation in stable kidney transplant patients after a long post-allograft period. Analysis of fecal microbiota could be useful for nephrologists as a new clinical tool that can improve kidney allograft monitoring and outcomes.
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Affiliation(s)
- Nessrine Souai
- Laboratory of Biotechnology and Valorisation of Bio-GeoRessources, Higher Institute of Biotechnology of Sidi Thabet, BiotechPole of Sidi Thabet, University of Manouba, Ariana 2020, Tunisia; (N.S.); (O.Z.); (A.M.); (A.C.)
- Department of Biology, Faculty of Sciences of Tunis, University of Tunis El Manar, Farhat Hachad Universitary Campus, Rommana 1068, Tunis, Tunisia
| | - Oumaima Zidi
- Laboratory of Biotechnology and Valorisation of Bio-GeoRessources, Higher Institute of Biotechnology of Sidi Thabet, BiotechPole of Sidi Thabet, University of Manouba, Ariana 2020, Tunisia; (N.S.); (O.Z.); (A.M.); (A.C.)
- Department of Biology, Faculty of Sciences of Tunis, University of Tunis El Manar, Farhat Hachad Universitary Campus, Rommana 1068, Tunis, Tunisia
| | - Amor Mosbah
- Laboratory of Biotechnology and Valorisation of Bio-GeoRessources, Higher Institute of Biotechnology of Sidi Thabet, BiotechPole of Sidi Thabet, University of Manouba, Ariana 2020, Tunisia; (N.S.); (O.Z.); (A.M.); (A.C.)
| | - Imen Kosai
- Unit of Organ Transplant Military Training Hospital, Mont Fleury 1008, Tunis, Tunisia; (I.K.); (J.E.M.)
| | - Jameleddine El Manaa
- Unit of Organ Transplant Military Training Hospital, Mont Fleury 1008, Tunis, Tunisia; (I.K.); (J.E.M.)
| | - Naima Bel Mokhtar
- Laboratory of Systems Microbiology and Applied Genomics, Department of Environmental Engineering, University of Patras, 2 Seferi St, 30100 Agrinio, Greece; (N.B.M.); (E.A.); (P.S.); (G.T.)
| | - Elias Asimakis
- Laboratory of Systems Microbiology and Applied Genomics, Department of Environmental Engineering, University of Patras, 2 Seferi St, 30100 Agrinio, Greece; (N.B.M.); (E.A.); (P.S.); (G.T.)
| | - Panagiota Stathopoulou
- Laboratory of Systems Microbiology and Applied Genomics, Department of Environmental Engineering, University of Patras, 2 Seferi St, 30100 Agrinio, Greece; (N.B.M.); (E.A.); (P.S.); (G.T.)
| | - Ameur Cherif
- Laboratory of Biotechnology and Valorisation of Bio-GeoRessources, Higher Institute of Biotechnology of Sidi Thabet, BiotechPole of Sidi Thabet, University of Manouba, Ariana 2020, Tunisia; (N.S.); (O.Z.); (A.M.); (A.C.)
| | - George Tsiamis
- Laboratory of Systems Microbiology and Applied Genomics, Department of Environmental Engineering, University of Patras, 2 Seferi St, 30100 Agrinio, Greece; (N.B.M.); (E.A.); (P.S.); (G.T.)
| | - Soumaya Kouidhi
- Laboratory of Biotechnology and Valorisation of Bio-GeoRessources, Higher Institute of Biotechnology of Sidi Thabet, BiotechPole of Sidi Thabet, University of Manouba, Ariana 2020, Tunisia; (N.S.); (O.Z.); (A.M.); (A.C.)
- Correspondence: ; Tel.: +216-95-694-135
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10
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Maalouly C, Devresse A, Martin A, Rodriguez‐Villalobos H, Kanaan N, Belkhir L. Coinfection of
Mycobacterium malmoense
and
Mycobacterium chimaera
in a kidney transplant recipient: A case report and review of the literature. Transpl Infect Dis 2020; 22:e13241. [DOI: 10.1111/tid.13241] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 12/03/2019] [Accepted: 12/26/2019] [Indexed: 01/15/2023]
Affiliation(s)
- Christian Maalouly
- Division of Nephrology Cliniques Universitaires Saint‐Luc Université Catholique de Louvain Brussels Belgium
| | - Arnaud Devresse
- Division of Nephrology Cliniques Universitaires Saint‐Luc Université Catholique de Louvain Brussels Belgium
| | - Anandi Martin
- Institute of Experimental and Clinical Research Pole of Medical Microbiology Université Catholique de Louvain Brussels Belgium
| | - Hector Rodriguez‐Villalobos
- Division of Microbiology Cliniques Universitaires Saint‐Luc Université Catholique de Louvain Brussels Belgium
| | - Nada Kanaan
- Division of Nephrology Cliniques Universitaires Saint‐Luc Université Catholique de Louvain Brussels Belgium
| | - Leïla Belkhir
- Division of Infectious Disease Cliniques Universitaires Saint‐Luc Université Catholique de Louvain Brussels Belgium
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11
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David MZ. A New Indication for Pneumococcal Vaccination? Am J Kidney Dis 2019; 74:9-11. [PMID: 31040090 DOI: 10.1053/j.ajkd.2019.03.420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 03/28/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Michael Z David
- Division of Infectious Diseases, Department of Medicine, University of Pennsylvania, Philadelphia, PA.
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12
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Abstract
The emergency department (ED) is an increasingly important site of care for patients who have undergone solid organ transplantation or hematopoietic cell transplantation. It is paramount for emergency physicians to recognize infections early on, obtain appropriate diagnostic testing, initiate empirical antimicrobial therapy, and consider specialty consultation and inpatient admission when caring for these patients. This review provides emergency physicians with an approach to the assessment of transplant patients' underlying risk for infection, formulation of a broad differential diagnosis, and initial management of transplant infectious disease emergencies in the ED.
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