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Tang ZL, Yao J, Zhang P, He X, Jia LL, Shi KL, Xia ZK, Gao CL. [A case of X-linked Alport syndrome with esophageal leiomyomatosis]. Zhonghua Er Ke Za Zhi 2024; 62:275-277. [PMID: 38378292 DOI: 10.3760/cma.j.cn112140-20231014-00287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Affiliation(s)
- Z L Tang
- Department of Pediatrics, Jinling School of Clinical Medicine, Nanjing Medical University, Nanjing 210002, China
| | - J Yao
- Department of Pediatrics, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210002, China
| | - P Zhang
- Department of Pediatrics, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210002, China
| | - X He
- Department of Pediatrics, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210002, China
| | - L L Jia
- Department of Pediatrics, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210002, China
| | - K L Shi
- Department of Pediatrics, Jinling School of Clinical Medicine, Nanjing Medical University, Nanjing 210002, China
| | - Z K Xia
- Department of Pediatrics, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210002, China
| | - C L Gao
- Department of Pediatrics, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210002, China
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Li XJ, Wei YQ, Gao CL, Xia ZK. [Pathogeny and treatment of systemic lupus erythematosus complicated with thrombotic microangiopathy]. Zhonghua Er Ke Za Zhi 2023; 61:753-756. [PMID: 37528023 DOI: 10.3760/cma.j.cn112140-20221231-01078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Affiliation(s)
- X J Li
- Department of Pediatrics, Nanjing Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210002, China
| | - Y Q Wei
- Department of Pediatrics, Jinling Hospital, the First School of Clinical Medicine, Southern Medical University, Nanjing 210002, China
| | - C L Gao
- Department of Pediatrics, Nanjing Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210002, China
| | - Z K Xia
- Department of Pediatrics, Nanjing Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210002, China
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Wei YQ, Li XJ, Gao CL, Xia ZK. [Research progress in growth of chronic kidney disease in children]. Zhonghua Er Ke Za Zhi 2023; 61:474-477. [PMID: 37096271 DOI: 10.3760/cma.j.cn112140-20221104-00936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 04/26/2023]
Affiliation(s)
- Y Q Wei
- Department of Pediatrics, Jinling Hospital, the First School of Clinical Medicine, Southern Medical University, Nanjing 210002, China
| | - X J Li
- Department of Pediatrics, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, China
| | - C L Gao
- Department of Pediatrics, Jinling Hospital, the First School of Clinical Medicine, Southern Medical University, Nanjing 210002, China
| | - Z K Xia
- Department of Pediatrics, Jinling Hospital, the First School of Clinical Medicine, Southern Medical University, Nanjing 210002, China
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Peng YC, Gao CL, Sun T, Zhang P, Xia ZK. [Long-term prognosis of primary focal segmental glomerulosclerosis in children]. Zhonghua Er Ke Za Zhi 2022; 60:894-900. [PMID: 36038298 DOI: 10.3760/cma.j.cn112140-20220228-00161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To investigate risk factors for the long-term prognosis of primary focal segmental glomerulosclerosis (FSGS) and associated with renal prognosis in children. Methods: A retrospective study was conducted by collecting clinical data including general information, clinical features and renal pathological findings of 124 children with primary FSGS in Department of Pediatrics of Jinling Hospital from January 2003 to December 2019. The cumulative renal survival rate was calculated by Kaplan-Meier survival analysis. The risk factors related to renal prognosis were identified by Cox regression risk model analysis and receiver operating characteristic (ROC) curve. Results: Among 124 children, 94 were males (75.8%) and 30 were females (24.2%). The children were 16 (14, 17) years of age at the time of kidney biopsies. There were 102 cases (82.3%) aged from 13 to 18 years. The period of follow-up was 64.8 (32.1, 86.0) months. There were 49 cases (39.5%) with nonspecific variant, 33 cases (26.6%) with tip variant, 22 cases (17.7%) with collapsing variant, 14 cases (11.3%) with cellular variant and 6 cases (4.8%) with periportal variant. The data of Kaplan-Meier survival analysis showed that cumulative renal survival rates of end-stage kidney disease (ESKD) or ≥50% decline in estimated glomerular filtration rate (eGFR) from baseline at the year of 5, 10 and 15 after renal biopsies were 66.9%, 51.4% and 21.0% respectively. Multivariate Cox regression analysis showed that hypertension, glomerular segmental sclerosis ratio, moderate to severe chronic tubulointerstitial lesions were independent risk factors for progressing to ESKD or ≥50% reduction in eGFR from baseline in pediatric FSGS (HR=5.28, 1.03, 7.81, 95%CI 2.77-10.05, 1.01-1.04, 4.08-14.98, all P<0.01). ROC curve analysis showed glomerular segmental sclerosis ratio (AUC=0.734, P<0.05, optimal cut-off value=25.4%, sensitivity=50.0%, specificity=88.6%), moderate and severe chronic renal tubulointerstitial lesions (AUC=0.724, P<0.05, sensitivity=46.3%, specificity=98.6%) had good efficacy in evaluating renal outcomes of FSGS. Conclusions: The long-term prognosis of FSGS in children is poor. The risk factors of poor prognosis in children with FSGS are hypertension, moderate to severe chronic renal tubulointerstitial lesions and glomerular segmental sclerosis (≥25.4%).
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Affiliation(s)
- Y C Peng
- Department of Pediatrics, Jinling Hospital, the First School of Clinical Medicine, Southern Medical University, Nanjing 210002, China
| | - C L Gao
- Department of Pediatrics, Jinling Hospital, the First School of Clinical Medicine, Southern Medical University, Nanjing 210002, China
| | - T Sun
- Department of Pediatrics, Jinling Hospital, the First School of Clinical Medicine, Southern Medical University, Nanjing 210002, China
| | - P Zhang
- Department of Pediatrics, Jinling Hospital, the First School of Clinical Medicine, Southern Medical University, Nanjing 210002, China
| | - Z K Xia
- Department of Pediatrics, Jinling Hospital, the First School of Clinical Medicine, Southern Medical University, Nanjing 210002, China
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Zhang MW, Zhu ZH, Xia ZK, Yang X, Luo WT, Ao JH, Yang RY. Comprehensive circRNA-microRNA-mRNA network analysis revealed the novel regulatory mechanism of Trichosporon asahii infection. Mil Med Res 2021; 8:19. [PMID: 33750466 PMCID: PMC7941914 DOI: 10.1186/s40779-021-00311-w] [Citation(s) in RCA: 4] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 03/03/2021] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Invasive Trichosporon asahii (T. asahii) infection frequently occurs with a high mortality in immunodeficient hosts, but the pathogenesis of T. asahii infection remains elusive. Circular RNAs (circRNAs) are a type of endogenous noncoding RNA that participate in various disease processes. However, the mechanism of circRNAs in T. asahii infection remains completely unknown. METHODS RNA sequencing (RNA-seq) was performed to analyze the expression profiles of circRNAs, microRNAs (miRNAs), and mRNAs in THP-1 cells infected with T. asahii or uninfected samples. Some of the RNA-seq results were verified by RT-qPCR. Gene Ontology (GO) enrichment and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses were used to analyze the differentially expressed mRNAs. A circRNA-miRNA-mRNA network was constructed and verified by dual-luciferase reporter assay and overexpression experiments. RESULTS A total of 46 circRNAs, 412 mRNAs and 47 miRNAs were differentially expressed at 12 h after T. asahii infection. GO and KEGG analyses showed that the differentially expressed mRNAs were primarily linked to the leukocyte migration involved in the inflammatory response, the Toll-like receptor signaling pathway, and the TNF signaling pathway. A competing endogenous RNA (ceRNA) network was constructed with 5 differentially expressed circRNAs, 5 differentially expressed miRNAs and 42 differentially expressed mRNAs. Among them, hsa_circ_0065336 was found to indirectly regulate PTPN11 expression by sponging miR-505-3p. CONCLUSIONS These data revealed a comprehensive circRNA-associated ceRNA network during T. asahii infection, thus providing new insights into the pathogenesis of the T. asahii-host interactions.
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Affiliation(s)
- Ming-Wang Zhang
- Department of Dermatology, Southwest Hospital, Army Medical University, Chongqing, 400038, China.,Department of Dermatology, The Seventh Medical Center of PLA General Hospital, 5 Nanmencang, Dongcheng District, Beijing, 100700, China
| | - Zhi-Hong Zhu
- Department of Ophthalmology, Hainan Hospital of Chinese PLA General Hospital, Sanya, 572000, Hainan, China
| | - Zhi-Kuan Xia
- Department of Dermatology, The Seventh Medical Center of PLA General Hospital, 5 Nanmencang, Dongcheng District, Beijing, 100700, China.,The Second School of Clinical Medicine, Southern Medical University, Guangzhou, 510280, Guangdong, China
| | - Xin Yang
- Department of Dermatology, The Seventh Medical Center of PLA General Hospital, 5 Nanmencang, Dongcheng District, Beijing, 100700, China.,The Second School of Clinical Medicine, Southern Medical University, Guangzhou, 510280, Guangdong, China
| | - Wan-Ting Luo
- Department of Dermatology, The Seventh Medical Center of PLA General Hospital, 5 Nanmencang, Dongcheng District, Beijing, 100700, China.,The Second School of Clinical Medicine, Southern Medical University, Guangzhou, 510280, Guangdong, China
| | - Jun-Hong Ao
- Department of Dermatology, The Seventh Medical Center of PLA General Hospital, 5 Nanmencang, Dongcheng District, Beijing, 100700, China
| | - Rong-Ya Yang
- Department of Dermatology, The Seventh Medical Center of PLA General Hospital, 5 Nanmencang, Dongcheng District, Beijing, 100700, China. .,The Second School of Clinical Medicine, Southern Medical University, Guangzhou, 510280, Guangdong, China.
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Yu SY, Xia ZK. [Application of adrenocorticotropic hormone in children with kidney disease]. Zhonghua Er Ke Za Zhi 2019; 57:718-721. [PMID: 31530362 DOI: 10.3760/cma.j.issn.0578-1310.2019.09.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Affiliation(s)
- S Y Yu
- Department of Pediatrics, Jinling Hospital, Nanjing 210002, China
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Zhong XH, Ding J, Zhou JH, Yu ZH, Sun SZ, Bao Y, Mao JH, Yu L, Li ZH, Han ZM, Song HM, Jiang XY, Liu YL, Zhang BL, Xia ZK, Jin CH, Zhu GH, Wang M, Feng SP, Shen Y, Huang SM, Ma QS, Li HX, Wang XJ, Ichihara K, Yao C, Dong CY. [A multicenter study of reference intervals for 15 laboratory parameters in Chinese children]. Zhonghua Er Ke Za Zhi 2019; 56:835-845. [PMID: 30392208 DOI: 10.3760/cma.j.issn.0578-1310.2018.11.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To establish comprehensive laboratory reference intervals for Chinese children. Methods: This was a cross-sectional multicenter study. From June 2013 to December 2014, eligible healthy children aged from 6-month to 17-year were enrolled from 20 medical centers with informed consent. They were assessed by physical examination, questionnaire survey and abdominal ultrasound for eligibility. Fasting blood samples were collected and delivered to central laboratory. Measurements of 15 clinical laboratory parameters were performed, including estradiol (E2), testosterone(T), luteinizing hormone(LH), follicle-stimulating hormone(FSH), alanine transaminase(ALT), serum creatinine(Scr), cystatin C, immunoglobulin A(IgA), immunoglobulin G(IgG), immunoglobulin M(IgM), complement (C3, C4), alkaline phosphatase(ALP), uric acid(UA) and creatine kinase(CK). Reference intervals were established according to central 95% confidence intervals for reference population, stratified by age and sex. Results: In total, 2 259 children were enrolled. Finally, 1 648 children were eligible for this study, including 830 boys and 818 girls, at a mean age of 7.4 years. Age- and sex- specific reference intervals have been established for the parameters. Reference intervals of sex hormones increased gradually with age. Concentrations of ALT, cystatin C, ALP and CK were higher in children under 2 years old. Serum levels of sex hormones, creatinine, immunoglobin, CK, ALP and urea increased rapidly in adolescence, with significant sex difference. In addition, reference intervals were variable depending on assay methods. Concentrations of ALT detected by reagents with pyridoxal 5'-phosphate(PLP) were higher than those detected by reagents without PLP. Compared with enzymatic method, Jaffe assay always got higher results of serum creatinine, especially in children younger than 9 years old. Conclusion: This study established age- and sex- specific reference intervals, for 15 clinical laboratory parameters based on defined healthy children.
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Affiliation(s)
- X H Zhong
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
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Gao CL, Xia ZK. [Interpretation of guidelines for the diagnosis and treatment of steroid-resistant nephrotic syndrome]. Zhonghua Er Ke Za Zhi 2017; 55:810-812. [PMID: 29141309 DOI: 10.3760/cma.j.issn.0578-1310.2017.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
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Chen W, Xia ZK, Zhang MH, Ding GC, Zhang XY, Wang ZX, Yang RY. Adipose tissue-derived stem cells ameliorates dermal fibrosis in a mouse model of scleroderma. ASIAN PAC J TROP MED 2016; 10:52-56. [PMID: 28107865 DOI: 10.1016/j.apjtm.2016.10.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [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: 09/01/2016] [Revised: 09/27/2016] [Accepted: 10/30/2016] [Indexed: 02/06/2023] Open
Abstract
OBJECTIVE To investigate the therapeutic potential of adipose-derived stem cells (ADSCs) for limited cutaneous scleroderma (LS) in mouse models. METHODS ADSCs were isolated from pathogen-free female C57BL/6 mice and LS was induced in wild type (WT) C57BL/6 mice via daily injection of bleomycin (0.1 mL × 300 μg/mL) for 4 weeks; then the ADSCs were subcutaneously injected into the dorsal area in the model treatment group, and 100 μL of phosphate-buffered saline (PBS) solution was injected into the same site in the model control group. Green fluorescent protein (GFP) was used to track the cells using an in vivo imaging system on days 7, 14, 21, and 28 after transplantation. All mice were sacrificed and histologic analyses were performed after 4 weeks, and the skin thickness, collagen deposition and the total content of hydroxyproline were evaluated. Additionally, immunohistochemistry were performed to compare the tissue expression and distribution of TGF-β1 and VEGF between the ADSCs treatment group and the treatment control group. RESULTS WT C57BL/6 LS mouse model were successfully established and GFP in vivo fluorescence imaging showed that the translated ADSCs survived at the local for at least 4 weeks. Compared with the control group, the ADSCs treatment group significantly attenuated bleomycin-induced dermal fibrosis, reduced the skin thickness and the total content of hydroxyproline (P < 0.05). The ADSCs treatment group displayed significantly lower levels of TGF-β1 and higher levels of VEGF than the control group (P < 0.05). CONCLUSIONS ADSCs may provide a feasible and practical treatment for autoimmune diseases such as LS and ameliorate dermal fibrosis.
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Affiliation(s)
- Wei Chen
- Department of Dermatology, Chinese People's Liberation Army General Hospital, Beijing, China; Department of Dermatology, Zhu Ri He Base Hospital of Beijing Military Command, Inner Mongolia, China; Department of Dermatology, Department of Ultrasound, General Hospital of Beijing Military Command, Beijing, China
| | - Zhi-Kuan Xia
- Department of Dermatology, Department of Ultrasound, General Hospital of Beijing Military Command, Beijing, China
| | - Man-Hui Zhang
- Department of Dermatology, Department of Ultrasound, General Hospital of Beijing Military Command, Beijing, China
| | - Gui-Chun Ding
- Department of Dermatology, Department of Ultrasound, General Hospital of Beijing Military Command, Beijing, China
| | - Xiao-Yan Zhang
- Department of Dermatology, Department of Ultrasound, General Hospital of Beijing Military Command, Beijing, China
| | - Zheng-Xu Wang
- Department of Dermatology, Department of Ultrasound, General Hospital of Beijing Military Command, Beijing, China
| | - Rong-Ya Yang
- Department of Dermatology, Department of Ultrasound, General Hospital of Beijing Military Command, Beijing, China.
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Liu LH, Fan X, Xia ZK, An XX, Yang RY. Angiotensin II stimulates melanogenesis via the protein kinase C pathway. Exp Ther Med 2015; 10:1528-1532. [PMID: 26622519 DOI: 10.3892/etm.2015.2682] [Citation(s) in RCA: 5] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 06/16/2015] [Indexed: 11/06/2022] Open
Abstract
Melanogenesis is a physiological process that results in the synthesis of melanin pigments, which serve a crucial function in hyperpigmentation. The aim of the present study was to determine the effects of angiotensin II (Ang II) on melanogenesis and to elucidate the molecular events of Ang II-induced melanogenesis. Experiments were performed on human melanocytes to elucidate the pigmenting effect of Ang II and the underlying mechanisms. The elements involved in melanogenesis, including melanin content, tyrosinase (TYR) activity, and microphthalmia-associated transcription factor (MITF) and TYR expression at the mRNA and protein levels were evaluated. Melanin content and TYR activity increased in response to Ang II treatment in a concentration-dependent manner. MITF and TYR mRNA and protein expression levels were increased significantly in response to Ang II in a concentration-dependent manner. The Ang II-induced increase in melanin synthesis was reduced significantly in response to co-treatment with Ro-32-0432, a protein kinase C (PKC) inhibitor, whereas co-treatment with H-89, a PKA inhibitor, did not attenuate the Ang II-induced increase in melanin levels. These results suggest that PKC is required for Ang II-induced pigmentation in human melanocytes and that the mechanism involves the PKC pathway and MITF upregulation.
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Affiliation(s)
- Li-Hong Liu
- Graduate School, The Third Military Medical University, Chongqing 400038, P.R. China ; Department of Dermatology, General Hospital of Beijing Military Region of PLA, Beijing 100125, P.R. China
| | - Xin Fan
- Department of Dermatology, General Hospital of Beijing Military Region of PLA, Beijing 100125, P.R. China
| | - Zhi-Kuan Xia
- Department of Dermatology, General Hospital of Beijing Military Region of PLA, Beijing 100125, P.R. China
| | - Xu-Xi An
- Department of Dermatology, General Hospital of Beijing Military Region of PLA, Beijing 100125, P.R. China
| | - Rong-Ya Yang
- Department of Dermatology, General Hospital of Beijing Military Region of PLA, Beijing 100125, P.R. China
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Cong L, Xia ZK, Yang RY. Targeting the TGF-β receptor with kinase inhibitors for scleroderma therapy. Arch Pharm (Weinheim) 2014; 347:609-15. [PMID: 24917246 DOI: 10.1002/ardp.201400116] [Citation(s) in RCA: 7] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 04/28/2014] [Accepted: 05/05/2014] [Indexed: 11/12/2022]
Abstract
Scleroderma (systemic sclerosis) is a connective tissue disease that affects various organ systems; the treatment of scleroderma is still difficult and remains a challenge to the clinician. Recently, kinase inhibitors have shown great potential against fibrotic diseases and, specifically, the transforming growth factor-β receptor (TGF-βR) was found as a new and promising target for scleroderma therapy. In the current study, we propose that the large pool of existing kinase inhibitors could be exploited for inhibiting the TGF-βR to suppress scleroderma. In this respect, we developed a modeling protocol to systematically profile the inhibitory activities of 169 commercially available kinase inhibitors against the TGF-βR, from which five promising candidates were selected and tested using a standard kinase assay protocol. Consequently, two molecular entities, namely the PKB inhibitor MK-2206 and the mTOR C1/C2 inhibitor AZD8055, showed high potency when bound to the TGF-βR, with IC50 values of 97 and 86 nM, respectively, which are close to those of the recently developed TGF-βR selective inhibitors SB525334 and LY2157299 (IC50 = 14.3 and 56 nM, respectively). We also performed atomistic molecular dynamics simulations and post-molecular mechanics/Poisson-Boltzmann surface area analyses to dissect the structural basis and energetic properties of intermolecular interactions between the TGF-βR kinase domain and these potent compounds, highlighting intensive nonbonded networks across the tightly packed interface of non-cognate TGF-βR-inhibitor complexes.
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Affiliation(s)
- Lin Cong
- Department of Dermatology, General Hospital of Beijing Military Command, Beijing, China; Graduate School, Third Military Medical University, Chongqing, China
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Xia ZK, Ma QH, Li SY, Zhang DQ, Cong L, Tian YL, Yang RY. The antifungal effect of silver nanoparticles on Trichosporon asahii. J Microbiol Immunol Infect 2014; 49:182-8. [PMID: 24877597 DOI: 10.1016/j.jmii.2014.04.013] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2013] [Revised: 04/03/2014] [Accepted: 04/15/2014] [Indexed: 11/17/2022]
Abstract
BACKGROUND/PURPOSE Silver nanoparticles are receiving increasing attention in biomedical applications. This study aims at evaluating the antifungal properties of silver nanoparticles against the pathogenic fungus Trichosporon asahii. METHODS The growth of T. asahii on potato dextrose agar medium containing different concentrations of silver nanoparticles was examined and the antifungal effect was evaluated using minimum inhibitory concentration. Scanning and transmission electron microscopy were also used to investigate the antifungal effect of silver nanoparticles on T. asahii. RESULTS Silver nanoparticles had a significant inhibitory effect on the growth of T. asahii. The minimum inhibitory concentration of silver nanoparticles against T. asahii was 0.5 μg/mL, which was lower than amphotericin B, 5-flucytosine, caspofungin, terbinafine, fluconazole, and itraconazole and higher than voriconazole. Silver nanoparticles obviously damaged the cell wall, cell membrane, mitochondria, chromatin, and ribosome. CONCLUSION Our results demonstrate that silver nanoparticles have good antifungal activity against T. asahii. Based on our electron microscopy observations, silver nanoparticles may inhibit the growth of T. asahii by permeating the fungal cell and damaging the cell wall and cellular components.
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Affiliation(s)
- Zhi-Kuan Xia
- Department of Dermatology, General Hospital of Beijing Military Command of PLA, Nanmencang, Dongcheng District, Beijing, PR China; Third Military Medical University, Gaotanyanzhengjie, Shapingba District, Chongqing, PR China
| | - Qiu-Hua Ma
- Department of Dermatology, General Hospital of Beijing Military Command of PLA, Nanmencang, Dongcheng District, Beijing, PR China
| | - Shu-Yi Li
- Department of Dermatology, General Hospital of Beijing Military Command of PLA, Nanmencang, Dongcheng District, Beijing, PR China
| | - De-Quan Zhang
- Department of Dermatology, General Hospital of Beijing Military Command of PLA, Nanmencang, Dongcheng District, Beijing, PR China
| | - Lin Cong
- Department of Dermatology, General Hospital of Beijing Military Command of PLA, Nanmencang, Dongcheng District, Beijing, PR China
| | - Yan-Li Tian
- Department of Dermatology, General Hospital of Beijing Military Command of PLA, Nanmencang, Dongcheng District, Beijing, PR China
| | - Rong-Ya Yang
- Department of Dermatology, General Hospital of Beijing Military Command of PLA, Nanmencang, Dongcheng District, Beijing, PR China.
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Xia ZK, Wang WL, Yang RY. Slowly progressive cutaneous, rhinofacial, and pulmonary mucormycosis caused by Mucor irregularis in an immunocompetent woman. Clin Infect Dis 2012; 56:993-5. [PMID: 23243187 DOI: 10.1093/cid/cis1045] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
We herein report a case of slowly progressive cutaneous, rhinofacial, and pulmonary mucormycosis caused by Mucor irregularis in an immunocompetent woman who was successfully managed by combined surgical debridement and antifungal therapy. Slow progression, pulmonary involvement, occurrence in an immunocompetent patient, and good prognosis are unusual features of our case.
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Affiliation(s)
- Zhi-Kuan Xia
- Department of Dermatology, General Hospital of Beijing Military Command of PLA, Beijing, People's Republic of China
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Yuan YC, Xia ZK, Yin N, Yin BL, Hu JG. Modified Thoracoscopic versus Minimally Invasive Oesophagectomy in Curative Resection of Oesophageal Cancer. J Int Med Res 2011; 39:904-11. [PMID: 21819723 DOI: 10.1177/147323001103900324] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Conventional thoracoscopic oesophagectomy is time-consuming and requires sophisticated endoscopic skills. To reduce these problems we have modified the operating procedure, first by anastomosis of the oesophagus with the tubular stomach pulled up via the retrosternal route, followed by thoracoscopic oesophagectomy (modified thoracoscopic oesophagectomy). Outcomes were compared between the modified procedure and minimally invasive oesophagectomy. There were no significant differences in general preoperative clinical characteristics between the two patient groups. The modified thoracoscopic oesophagectomy group had significantly lower hospitalization expenses, significantly shorter operation times and significantly more lymph nodes removed compared with the minimally invasive oesophagectomy group, but there were no significant group differences in lengths of hospital and intensive care unit stays, morbidity and mortality. These results indicate that modified thoracoscopic oesophagectomy is feasible, simplifies operating procedures and reduces hospitalization expenses with acceptable morbidity.
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Affiliation(s)
- YC Yuan
- Department of Cardiothoracic Surgery, Second Xiangya Hospital of Central South University, Changsha, China
| | - ZK Xia
- Department of Cardiothoracic Surgery, Second Xiangya Hospital of Central South University, Changsha, China
| | - N Yin
- Department of Cardiothoracic Surgery, Second Xiangya Hospital of Central South University, Changsha, China
| | - BL Yin
- Department of Cardiothoracic Surgery, Second Xiangya Hospital of Central South University, Changsha, China
| | - JG Hu
- Department of Cardiothoracic Surgery, Second Xiangya Hospital of Central South University, Changsha, China
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Xia ZK, Yang RY, Wang WL, Ao JH, Wang CM, Zhu H. [Significance of IGS1, ITS and D1/D2 regions in molecular identification of Trichosporon species and genotype of T. asahii in China]. Zhonghua Yi Xue Za Zhi 2008; 88:3145-3148. [PMID: 19159600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
OBJECTIVE To compare the sensitivity and specificity in molecular identification in different DNA regions of Trichosporon species and to study the genotype of T. asahii isolated from clinical specimens in China. METHODS DNA was extracted from the cells of all experimental strains by using a method of glass bead method. The D1/D2, ITS and IGS1 regions were amplified by PCR with specific primers, the PCR products were cloned and sequenced. The sequences were referred to GenBank and compared with the other sequences of the Trichosporon species from GenBank by the software CLUSTAL X 1.83. Phylogenetic trees were constructed and genotypes were determined. RESULTS The D1/D2 regions in T. asahii (CBS2479), T. dermatis, and T. laibachii were 640, 639, and 637 bp in length respectively, the ITS regions were 541, 528, and 531 bp respectively in length, and the IGS1 regions were 643, 515, and 411 bp respectively. The sequence similarity of the D1/D2 region was 89% - 99%, that of ITS and IGS1 regions were 85% - 99% and 11% - 95% respectively. The clinically isolated strains BZP07001, BZP07002, BZP07004, and BZP07005 belonged to genotype I, and the strain BZP07003 to genotype IV. CONCLUSION The sensitivity and specificity of the IGS1 region was higher than those of the D1/D2 and ITS regions in identification of phylogenetically closely related Trichosporon species. T. asahii isolated from clinical specimens in China belongs to either genotype I or genotype IV.
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Affiliation(s)
- Zhi-Kuan Xia
- Department of Dermatology, General Hospital of Beijing Command of the Chinese People's Liberation Army, Beijing 100700, China
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