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Ma L, Ai F, Xiao H, Wang F, Shi L, Bai X, Zhu Y, Ma W. Lycium barbarum polysaccharide reverses drug resistance in oxaliplatin-resistant colon cancer cells by inhibiting PI3K/AKT-dependent phosphomannose isomerase. Front Pharmacol 2024; 15:1367747. [PMID: 38576495 PMCID: PMC10991850 DOI: 10.3389/fphar.2024.1367747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 03/01/2024] [Indexed: 04/06/2024] Open
Abstract
Objective: Here, we aimed to explore the effect of LBP in combination with Oxaliplatin (OXA) on reversing drug resistance in colon cancer cells through in vitro and in vivo experiments. We also aimed to explore the possible mechanism underlying this effect. Finally, we aimed to determine potential targets of Lycium barbarum polysaccharide (LBP) in colon cancer (CC) through network pharmacology and molecular docking. Methods: The invasion ability of colon cancer cells was assessed using the invasion assay. The migration ability of these cells was assessed using the migration assay and wound healing assay. Cell cycle analysis was carried out using flow cytometry. The expression levels of phosphomannose isomerase (PMI) and ATP-binding cassette transport protein of G2 (ABCG2) proteins were determined using immunofluorescence and western blotting. The expression levels of phosphatidylinositol3-kinase (PI3K), protein kinase B (AKT), B-cell lymphoma 2 (Bcl-2), and BCL2-Associated X (Bax) were determined using western blotting. Forty BALB/c nude mice purchased from Weitong Lihua, Beijing, for the in vivo analyses. The mice were randomly divided into eight groups. They were administered HCT116 and HCT116-OXR cells to prepare colon cancer xenograft models and then treated with PBS, LBP (50 mg/kg), OXA (10 mg/kg), or LBP + OXA (50 mg/kg + 10 mg/kg). The tumor weight and volume of treated model mice were measured, and organ toxicity was evaluated using hematoxylin and eosin staining. The expression levels of PMI, ABCG2, PI3K, and AKT proteins were then assessed using immunohistochemistry. Moreover, PMI and ABCG2 expression levels were analyzed using immunofluorescence and western blotting. The active components and possible targets of LBP in colon cancer were explored using in silico analysis. GeneCards was used to identify CC targets, and an online Venn analysis tool was used to determine intersection targets between these and LBP active components. The PPI network for intersection target protein interactions and the PPI network for interactions between the intersection target proteins and PMI was built using STRING and Cytoscape. To obtain putative targets of LBP in CC, we performed GO function enrichment and KEGG pathway enrichment analyses. Results: Compared with the HCT116-OXR blank treatment group, both invasion and migration abilities of HCT116-OXR cells were inhibited in the LBP + OXA (2.5 mg/mL LBP, 10 μΜ OXA) group (p < 0.05). Cells in the LBP + OXA (2.5 mg/mL LBP, 10 μΜ OXA) group were found to arrest in the G1 phase of the cell cycle. Knockdown of PMI was found to downregulate PI3K, AKT, and Bcl-2 (p < 0.05), while it was found to upregulate Bax (p < 0.05). After treatment with L. barbarum polysaccharide, 40 colon cancer subcutaneous tumor models showed a decrease in tumor size. There was no difference in the liver index after LBP treatment (p > 0.05). However, the spleen index decreased in the OXA and LBP + OXA groups (p < 0.05), possibly as a side effect of oxaliplatin. Immunohistochemistry, immunofluorescence, and western blotting showed that LBP + OXA treatment decreased PMI and ABCG2 expression levels (p < 0.05). Moreover, immunohistochemistry showed that LBP + OXA treatment decreased the expression levels of PI3K and AKT (p < 0.05). Network pharmacology analysis revealed 45 active LBP components, including carotenoids, phenylpropanoids, quercetin, xanthophylls, and other polyphenols. It also revealed 146 therapeutic targets of LBP, including AKT, SRC, EGFR, HRAS, STAT3, and MAPK3. KEGG pathway enrichment analysis showed that the LBP target proteins were enriched in pathways, including cancer-related signaling pathways, PI3K/AKT signaling pathway, and IL-17 signaling pathways. Finally, molecular docking experiments revealed that the active LBP components bind well with ABCG2 and PMI. conclusion: Our in vitro experiments showed that PMI knockdown downregulated PI3K, AKT, and Bcl-2 and upregulated Bax. This finding confirms that PMI plays a role in drug resistance by regulating the PI3K/AKT pathway and lays a foundation to study the mechanism underlying the reversal of colon cancer cell drug resistance by the combination of LBP and OXA. Our in vivo experiments showed that LBP combined with oxaliplatin could inhibit tumor growth. LBP showed no hepatic or splenic toxicity. LBP combined with oxaliplatin could downregulate the expression levels of PMI, ABCG2, PI3K, and AKT; it may thus have positive significance for the treatment of advanced metastatic colon cancer. Our network pharmacology analysis revealed the core targets of LBP in the treatment of CC as well as the pathways they are enriched in. It further verified the results of our in vitro and in vivo experiments, showing the involvement of multi-component, multi-target, and multi-pathway synergism in the drug-reversing effect of LBP in CC. Overall, the findings of the present study provide new avenues for the future clinical treatment of CC.
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Affiliation(s)
- Lijun Ma
- Department of Human Anatomy, Histology and Embryology, School of Basic Medicine, Ningxia Medical University, Yinchuan, China
- Key Laboratory of Ningxia Ethnomedicine Modernization of Ministry of Education, Ningxia Medical University, Yinchuan, China
| | - Fangfang Ai
- Key Laboratory of Ningxia Ethnomedicine Modernization of Ministry of Education, Ningxia Medical University, Yinchuan, China
- School of Clinical Medicine, Ningxia Medical University, Yinchuan, China
| | - Hongyan Xiao
- People’s Hospital of Ningxia Hui Autonomous Region, Yinchuan, China
| | - Fang Wang
- People’s Hospital of Ningxia Hui Autonomous Region, Yinchuan, China
| | - Lei Shi
- School of Clinical Medicine, Ningxia Medical University, Yinchuan, China
| | - Xuehong Bai
- School of Clinical Medicine, Ningxia Medical University, Yinchuan, China
| | - Yongzhao Zhu
- School of Clinical Medicine, Ningxia Medical University, Yinchuan, China
| | - Wenping Ma
- School of Biological Science and Engineering, North Minzu University, Yinchuan, China
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Li Y, Liu J, Zhang Y, Mao M, Wang H, Ma Y, Chen Z, Zhang Y, Liao C, Chang X, Gao Q, Guo J, Ye Y, Ai F, Liu X, Zhao X, Tian W, Yang H, Ji W, Tan T, Zhu L. A comprehensive evaluation of spontaneous pelvic organ prolapse in rhesus macaques as an ideal model for the study of human pelvic organ prolapse. Sci Bull (Beijing) 2023; 68:2434-2447. [PMID: 37714805 DOI: 10.1016/j.scib.2023.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 08/02/2023] [Accepted: 09/01/2023] [Indexed: 09/17/2023]
Abstract
Pelvic organ prolapse (POP) seriously affects a woman's quality of life, and the treatment complications are severe. Although new surgical treatments are being developed, the host tissue responses and safety need to be evaluated in preclinical trials. However, there is a lack of suitable animal models, as most quadrupeds exhibit different structural and pathological changes. In this study, 72 elderly rhesus macaques (Macaca mulatta) were physically examined, and the incidence of spontaneous POP was similar to that in humans. The vaginal wall from five control monkeys and four monkeys with POP were selected for further analysis. Verhoeff-van Gieson staining showed that elastin content decreased significantly in monkeys with POP compared with control samples. Immunohistological staining revealed that the smooth muscle bundles in monkey POP appeared disorganized, and the number of large muscle bundles decreased significantly. The collagen I/III ratio in monkey POP also significantly decreased, as revealed by Sirius Red staining. These histological and biochemical changes in monkeys with POP were similar to those in humans with POP. Moreover, we generated a single-cell transcriptomic atlas of the prolapsed monkey vagina. Cross-species analysis between humans and monkeys revealed a comparable cellular composition. Notably, a differential gene expression analysis determined that dysregulation of the extracellular matrix and an immune disorder were the conserved molecular mechanisms. The interplay between fibroblasts and macrophages contributed to human and monkey POP. Overall, this study represents a comprehensive evaluation of spontaneous POP in rhesus macaques and demonstrates that monkeys are a suitable animal model for POP research.
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Affiliation(s)
- Yaqian Li
- Medical Science Research Center, the State Key Laboratory for Complex, Severe, and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100730, China
| | - Jian Liu
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming 650500, China
| | - Ye Zhang
- Department of Obstetrics and Gynecology, National Clinical Research Center for Obstetric & Gynecologic Diseases, the State Key Laboratory for Complex, Severe, and Rare Diseases, the State Key Laboratory of Common Mechanism Research for Major Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China; Department of Obstetrics and Gynecology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - Meng Mao
- Department of Obstetrics and Gynecology, National Clinical Research Center for Obstetric & Gynecologic Diseases, the State Key Laboratory for Complex, Severe, and Rare Diseases, the State Key Laboratory of Common Mechanism Research for Major Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China; Department of Obstetrics and Gynecology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - Hong Wang
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming 650500, China
| | - Yidi Ma
- Department of Obstetrics and Gynecology, National Clinical Research Center for Obstetric & Gynecologic Diseases, the State Key Laboratory for Complex, Severe, and Rare Diseases, the State Key Laboratory of Common Mechanism Research for Major Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China; Department of Obstetrics and Gynecology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - Zhigang Chen
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming 650500, China
| | - Youyue Zhang
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming 650500, China
| | - Chengmin Liao
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming 650500, China
| | - Xiaoqing Chang
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming 650500, China
| | - Qianqian Gao
- Department of Obstetrics and Gynecology, National Clinical Research Center for Obstetric & Gynecologic Diseases, the State Key Laboratory for Complex, Severe, and Rare Diseases, the State Key Laboratory of Common Mechanism Research for Major Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Jianbin Guo
- Department of Obstetrics and Gynecology, National Clinical Research Center for Obstetric & Gynecologic Diseases, the State Key Laboratory for Complex, Severe, and Rare Diseases, the State Key Laboratory of Common Mechanism Research for Major Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Yang Ye
- Department of Obstetrics and Gynecology, National Clinical Research Center for Obstetric & Gynecologic Diseases, the State Key Laboratory for Complex, Severe, and Rare Diseases, the State Key Laboratory of Common Mechanism Research for Major Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Fangfang Ai
- Department of Obstetrics and Gynecology, Xuanwu Hospital, Capital Medical University, Beijing 100053, China
| | - Xudong Liu
- Medical Science Research Center, the State Key Laboratory for Complex, Severe, and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100730, China
| | - Xiaoyue Zhao
- Department of Obstetrics and Gynecology, National Clinical Research Center for Obstetric & Gynecologic Diseases, the State Key Laboratory for Complex, Severe, and Rare Diseases, the State Key Laboratory of Common Mechanism Research for Major Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Weijie Tian
- Department of Obstetrics and Gynecology, National Clinical Research Center for Obstetric & Gynecologic Diseases, the State Key Laboratory for Complex, Severe, and Rare Diseases, the State Key Laboratory of Common Mechanism Research for Major Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China; Department of Gynecology, Guizhou Provincial People's Hospital, Medical College of Guizhou University, Guiyang 550002, China
| | - Hua Yang
- Department of Obstetrics and Gynecology, National Clinical Research Center for Obstetric & Gynecologic Diseases, the State Key Laboratory for Complex, Severe, and Rare Diseases, the State Key Laboratory of Common Mechanism Research for Major Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Weizhi Ji
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming 650500, China.
| | - Tao Tan
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming 650500, China.
| | - Lan Zhu
- Department of Obstetrics and Gynecology, National Clinical Research Center for Obstetric & Gynecologic Diseases, the State Key Laboratory for Complex, Severe, and Rare Diseases, the State Key Laboratory of Common Mechanism Research for Major Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China.
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Ai F, Qin X, Zhou L, Wang S. Analysis of factors related to endometrial cancer in postmenopausal women with endometrial thickening. Menopause 2023; 30:920-926. [PMID: 37555714 DOI: 10.1097/gme.0000000000002232] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2023]
Abstract
OBJECTIVE To investigate the factors related to endometrial cancer (EC) in postmenopausal women with endometrial thickening and the value of endometrial thickness (ET) in predicting EC. METHODS A retrospective study of 385 referrals to our department for hysteroscopic diagnostic curettage assessment was carried out. Univariate analysis and multiple logistic regression analysis were used to identify the independent contributors to the development of EC. The ability of ET to predict EC was evaluated by receiver operating characteristic curve analysis. RESULTS The follow-up period from the identification of endometrial thickening to pathological confirmation of EC was from 2 weeks to 3 months. In the postmenopausal bleeding (PMB) group, a total of 47 participants' specimens were pathologically malignant. Older age and polypoid mass-like lesions ( P < 0.001) were independent factors associated with EC. The optimal critical value of ET in predicting EC was 9.5 mm, with a sensitivity and specificity of 70.21% and 70.67%, respectively. In the non-PMB group, six participants had evidence of malignant pathology, and only polypoid mass-like lesions were an independent factor associated with EC ( P < 0.001). CONCLUSIONS For postmenopausal women with increased ET and PMB, older age, thicker ET, and polypoid mass-like lesions on transvaginal ultrasound were independent associated factors for EC. An ET greater than 9.5 mm is a threshold for predicting EC. For postmenopausal women with increased ET without PMB, the incidence of endometrial malignancy is low. If the woman has polypoid mass-like lesions on transvaginal ultrasound, she should receive further attention.
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Affiliation(s)
- Fangfang Ai
- From the Department of Obstetrics and Gynecology, Xuanwu Hospital, Capital Medical University, Beijing, People's Republic of China
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Ai F, Wang Y, Wang J, Zhou L, Wang S. Effect of estrogen on vaginal complications of pessary use: a systematic review and meta-analysis. Climacteric 2022; 25:533-542. [PMID: 35695119 DOI: 10.1080/13697137.2022.2079973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVE We aimed to systematically review the impact of local estrogen use in combination with a pessary on vaginal complications in postmenopausal women with pelvic organ prolapse (POP). METHODS We searched databases including Medline, Embase, PubMed, Clinical Trials and the Cochrane Central Register of Controlled Trials for relevant literature published in English from inception to 31 May 2021. Only randomized controlled trials (RCTs) and cohort studies were included. RESULTS In total, five studies were included (three RCTs, one prospective study and one retrospective cohort study). The meta-analysis was performed with subgroups. Our results indicated a significantly lower incidence of bacterial vaginosis (BV) among postmenopausal women who used estrogen than among controls, with a total pooled odds ratio (OR) of 0.29 (95% confidence interval [CI]: 0.11-0.72; I2 = 38%; p = 0.008). The summary ORs of the estrogen use group were 0.98 (95% CI: 0.59-1.63; I2 = 41%; p = 0.95) for vaginal ulceration, 0.80 (95% CI: 0.42-1.54; I2 = 29%; p = 0.50) for vaginal bleeding and 0.74 (95% CI: 0.35-1.58; I2 = 35%; p = 0.44) for vaginal discharge. CONCLUSIONS Local estrogen in combination with a pessary could decrease the BV rate among postmenopausal women with POP. However, consensus regarding the value of estrogen use for decreasing other pessary complications has not yet been reached. Additional multicenter RCTs with large sample sizes should be conducted to better understand the effect of estrogen use on reducing pessary-related complications.
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Affiliation(s)
- F Ai
- Department of Obstetrics and Gynecology, Xuanwu Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Y Wang
- Department of Obstetrics and Gynecology, Xuanwu Hospital, Capital Medical University, Beijing, People's Republic of China
| | - J Wang
- Department of Obstetrics and Gynecology, Xuanwu Hospital, Capital Medical University, Beijing, People's Republic of China
| | - L Zhou
- Department of Obstetrics and Gynecology, Xuanwu Hospital, Capital Medical University, Beijing, People's Republic of China
| | - S Wang
- Department of Obstetrics and Gynecology, Xuanwu Hospital, Capital Medical University, Beijing, People's Republic of China
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Ai F, Wang Y, Zhou L, Wang S. Clinicopathologic characteristics and risk factors for endometrial malignancy in postmenopausal women with endometrial thickening. Menopause 2022; 29:137-143. [PMID: 35013057 DOI: 10.1097/gme.0000000000001903] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To evaluate the clinicopathological characteristics and risk factors for endometrial malignancy in postmenopausal women with endometrial thickening. METHODS This was a retrospective study. Postmenopausal women with endometrial thickening (defined as the thickest endometrial portion in the sagittal uterine plane was greater than or equal to 5 mm) through transvaginal ultrasound in our outpatient department, and further referred to the gynecology department at Xuanwu Hospital for hysteroscopic diagnostic curettage assessment between January 2018 and March 2021 were included. According to the histopathological results, participants were divided into the benign group and malignant group. Univariate analysis was used to compare the differences in various factors, including demographics, clinical characteristics, medical complications, and ultrasound characteristics, between the two groups. Multiple logistic regression analysis was used to identify the factors that were independent contributors to the development of endometrial malignancy. Receiver operating characteristic analysis of endometrial thickness (ET) to predict endometrial malignancy was performed. RESULTS In total, 385 eligible cases were included in the analysis. The results suggested that older age (odds ratio [OR] 1.061, 95% confidence interval [CI] 1.008-1.116, P = 0.023), thicker ET (OR 5.032, 95% CI 2.453-10.322, P < 0.001), irregular menstruation in the past (OR 19.203, 95% CI 1.936-190.431, P = 0.012), postmenopausal bleeding (OR 12.341, 95% CI 4.440-34.302, P < 0.001), and polypoid mass-like lesions (OR 30.330, 95% CI 8.974-102.509, P < 0.001) were risk factors that were independently associated with the development of endometrial malignancy in postmenopausal women with increased ET. The optimal critical value of ET in predicting malignancy was 9.5 mm, and the sensitivity and specificity were 71.70% and 71.69%, respectively. CONCLUSIONS For postmenopausal women with endometrial thickening, our results suggested that women who are older, have a thicker ET, had irregular menstruation in the past, have postmenopausal bleeding, and have polypoid mass-like lesions should seek medical attention as soon as possible and undergo further invasive examination. The use of 9.5 mm as the ET value to prompt investigations may be acceptable since it is unlikely to miss any atypical endometrial hyperplasia or endometrial cancer.
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Affiliation(s)
- Fangfang Ai
- Department of Obstetrics and Gynecology, Xuanwu Hospital, Capital Medical University, Beijing, China
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Li Z, Liang D, Xiao Y, Dai Y, Ai F, Ding J, Shi M, Xiao Y, Guo B. [Oxymatrine improves renal fibrosis and inflammation in diabetic rats by modulating CHK1/2 phosphorylation]. Nan Fang Yi Ke Da Xue Xue Bao 2021; 41:1519-1526. [PMID: 34755667 DOI: 10.12122/j.issn.1673-4254.2021.10.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To explore the role of cell cycle checkpoint kinase 1/2 (CHK1/2) in mediating the inhibitory effect of oxymatrine (OMT) against renal inflammation and fibrosis in diabetic rats. METHODS SD rats were randomly divided into normal control group, diabetes model group (DM) and OMT treatment group (n=6). HE and Masson staining were used to observe histopathological changes of the renal tissue, and the expressions of CHK1, CHK2, p-CHK1 and p-CHK2 were localized by immunohistochemical staining. The contents of interleukin-6 (IL-6) and IL-1β in the renal tissue were detected using ELISA, and the expression levels of CHK1, CHK2, p-CHK1, p-CHK2, type Ⅲ collagen (Col-Ⅲ), type Ⅳ collagen (Col-Ⅳ), and fibronectin (FN) were determined using Western blotting. The changes in the expressions of CHK1, CHK2, p-CHK1, p-CHK2, Col-Ⅲ, Col-Ⅳ and FN proteins were also examined with Western blotting in NRK-52E cells in response to high glucose exposure, OMT treatment and siRNA-mediated CHK1/2 knockdown. RESULTS In diabetic rats, OMT treatment significantly decreased the levels of blood glucose, serum creatinine and 24 h urinary protein (P < 0.05) and obviously improved inflammatory cell infiltration and fibrosis phenotype in the renal tissue (P < 0.05). CHK1 and CHK2 were mainly expressed in the cytoplasm and nuclei of renal tubule cells, and their phosphorylation levels were significantly higher in DM group than in the control group and OMT group. OMT treatment significantly decreased the protein expression levels of p-CHK1, p-CHK2, Col-Ⅲ, Col-Ⅳ and FN in the renal tissue of diabetic rats and in NRK-52E cells exposed to high glucose (P < 0.05). In NRK-52E cells, CHK1/2 knockdown resulted in significant reduction of the protein expressions of p-CHK1/2, Col-Ⅲ, Col-Ⅳ and FN (P < 0.05). CONCLUSION The inhibitory effects of OMT against renal inflammation and fibrosis in diabetic rats are mediated probably by lowered phosphorylation levels of CHK1 and CHK2, which result in reduced release of the downstream inflammatory mediators and decreased secretion and deposition of extracellular matrix.
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Affiliation(s)
- Z Li
- Department of Pathophysiology, Basic Medical College, Guizhou Medical University/ Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research of Common Chronic Diseases, Guiyang 550025, China
| | - D Liang
- Department of Pathophysiology, Basic Medical College, Guizhou Medical University/ Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research of Common Chronic Diseases, Guiyang 550025, China
| | - Y Xiao
- Department of Pathophysiology, Basic Medical College, Guizhou Medical University/ Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research of Common Chronic Diseases, Guiyang 550025, China
| | - Y Dai
- Department of Pathophysiology, Basic Medical College, Guizhou Medical University/ Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research of Common Chronic Diseases, Guiyang 550025, China
| | - F Ai
- Department of Pathophysiology, Basic Medical College, Guizhou Medical University/ Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research of Common Chronic Diseases, Guiyang 550025, China
| | - J Ding
- Department of Pathophysiology, Basic Medical College, Guizhou Medical University/ Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research of Common Chronic Diseases, Guiyang 550025, China
| | - M Shi
- Department of Pathophysiology, Basic Medical College, Guizhou Medical University/ Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research of Common Chronic Diseases, Guiyang 550025, China
| | - Y Xiao
- Department of Pathophysiology, Basic Medical College, Guizhou Medical University/ Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research of Common Chronic Diseases, Guiyang 550025, China
| | - B Guo
- Department of Pathophysiology, Basic Medical College, Guizhou Medical University/ Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research of Common Chronic Diseases, Guiyang 550025, China
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Liang D, Yan L, Huang K, Li Y, Ai F, Zhang H, Jiang Z. Effect of Different Rotational Speeds on Graphene-Wrapped SiC Core-Shell Nanoparticles in Wet Milling Medium. Materials (Basel) 2021; 14:944. [PMID: 33671233 PMCID: PMC7923179 DOI: 10.3390/ma14040944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 02/12/2021] [Accepted: 02/14/2021] [Indexed: 11/17/2022]
Abstract
The effects of the wet milling rotating speed on the number of graphene layers and graphene quality, and the conversion efficiency of graphite exfoliate to graphene, were investigated by scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM), Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD). The results show that the number of few-layer graphene nanometer sheets (GNSs) (≤10 layers) gradually increases with the increase of rotational speed in the range of 160-240 rpm. The proportion of GNSs with 0-10 layers reaches more than 80% as the rotational speed is increased to 280 rpm. GNS defect types in the composite materials are marginal defects with minimal influence and almost no oxidation. In the range of 160-280 rpm, the intensity of graphite peak decreases and the conversion efficiency of graphene increases with the increase of rotational speed. This is the same as the experimental result obtained by HRTEM.
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Affiliation(s)
- Dong Liang
- School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China; (D.L.); (K.H.)
| | - Ling Yan
- State Key Laboratory of Metal Material for Marine Equipment and Application, Anshan 114009, Liaoning, China; (Y.L.); (F.A.)
| | - Kunkun Huang
- School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China; (D.L.); (K.H.)
| | - Yan Li
- State Key Laboratory of Metal Material for Marine Equipment and Application, Anshan 114009, Liaoning, China; (Y.L.); (F.A.)
| | - Fangfang Ai
- State Key Laboratory of Metal Material for Marine Equipment and Application, Anshan 114009, Liaoning, China; (Y.L.); (F.A.)
| | - Hongmei Zhang
- School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China; (D.L.); (K.H.)
- State Key Laboratory of Metal Material for Marine Equipment and Application, Anshan 114009, Liaoning, China; (Y.L.); (F.A.)
| | - Zhengyi Jiang
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, Australia;
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Deng M, Ding J, Ai F, Mao M, Zhu L. Impact of human umbilical cord-derived stem cells (HUMSCs) on host responses to a synthetic polypropylene mesh for pelvic floor reconstruction in a rat model. Cell Tissue Res 2020; 382:519-527. [PMID: 32876745 DOI: 10.1007/s00441-020-03234-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 06/04/2020] [Indexed: 02/03/2023]
Abstract
In order to evaluate the effects of human umbilical cord-derived stem cells (HUMSCs) on the biocompatibility of and tissue response to a polypropylene (PP) mesh (Gynemesh™ PS) implanted in rat vaginas, HUMSCs were isolated and characterized in vitro and then combined with Gynemesh™ PS to create a tissue-engineered mesh. This tissue-engineered mesh and pure PP mesh were implanted in the submucosae of the posterior vaginal walls of rats. Mesh/tissue complexes were harvested at 1, 4 and 12 weeks after implantation. Histological evaluations including an assessment of the inflammatory reaction, neovascularization and fibrosis around the mesh fibers were performed and real-time quantitative polymerase chain reaction (RT-PCR) was used to analyze the mRNA expression of genes involved in wound healing at the tissue-mesh interface. After being seeded onto the PP mesh scaffold, HUMSCs grew and proliferated well in vitro culture. One week after implantation, the HUMSC-seeded mesh elicited a greater inflammatory response than the pure PP mesh (3.33 ± 0.21 vs. 2.63 ± 0.18, p = 0.026), while 4 and 12 weeks after implantation, the inflammatory response in the HUMSC-seeded mesh was lower than that in the unseeded mesh (p < 0.05). At 12 weeks, the HUMSC-seeded mesh induced a lower expression of matrix metalloproteinase (MMP)-1 and a higher expression of anti-inflammatory cytokine interleukin (IL)-4. HUMSCs may decrease the inflammatory response and improve the biocompatibility of a conventional synthetic mesh and may have the potential to reduce postoperative complications such as mesh exposure or erosion.
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Affiliation(s)
- Mou Deng
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, No.1 Shuai Fu Road, Dongcheng District, Beijing, People's Republic of China.,Department of Gynecology, The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Yuzhong District, Chongqing, China
| | - Jing Ding
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, No.1 Shuai Fu Road, Dongcheng District, Beijing, People's Republic of China
| | - Fangfang Ai
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, No.1 Shuai Fu Road, Dongcheng District, Beijing, People's Republic of China
| | - Meng Mao
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, No.1 Shuai Fu Road, Dongcheng District, Beijing, People's Republic of China
| | - Lan Zhu
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, No.1 Shuai Fu Road, Dongcheng District, Beijing, People's Republic of China.
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Zhang H, Li H, Yan L, Wang C, Ai F, Li Y, Li N, Jiang Z. Effect of Particle Size on Microstructure and Element Diffusion at the Interface of Tungsten Carbide/High Strength Steel Composites. Materials (Basel) 2019; 12:ma12244164. [PMID: 31835820 PMCID: PMC6947265 DOI: 10.3390/ma12244164] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 12/06/2019] [Accepted: 12/09/2019] [Indexed: 11/23/2022]
Abstract
The microstructure and micro-hardness of tungsten carbide/high strength steel (WC/HSS) composites with different particle sizes were analyzed by optical microscopy (OM), scanning electron microscopy (SEM), ultra-high temperature laser confocal microscopy (UTLCM) and micro-hardness testing. The composites were prepared by cold pressing and vacuum sintering. The results show that WC density tends to increase as the average grain size of WC decreases and the micro-hardness of WC increases with the decrease of WC particle size. The micro-hardness of WC near the bonding interface is higher than that in other regions. When the particle size of WC powder particles is 200 nm, a transition layer with a certain width is formed at the interface between WC and HSS, and the combination between the two materials is metallurgical. The iron element in the HSS matrix diffuses into the WC structure in contact with it, resulting in a fusion layer of a certain width, and the composite interface is relatively well bonded. When the average particle size of WC powder is 200 nm, W, Fe and Co elements significantly diffuse in the transition zone at the interface. With the increase of WC particle size, the trend of element diffusion decreases.
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Affiliation(s)
- Hongmei Zhang
- School of Material and Metallurgy, University of Science and Technology Liaoning, Anshan 114000, China; (H.L.); (C.W.); (N.L.)
- The State Key Laboratory of Metal Material for Marine Equipment and Application, Anshan Iron and Steel Research Institute of AnGang Group, Anshan 114009, China; (L.Y.); (F.A.); (Y.L.)
- Correspondence: (H.Z.); (Z.J.); Tel.: +86-138-0492-7151 (H.Z.); +86-188-1650-7540 (Z.J.)
| | - Hongnan Li
- School of Material and Metallurgy, University of Science and Technology Liaoning, Anshan 114000, China; (H.L.); (C.W.); (N.L.)
| | - Ling Yan
- The State Key Laboratory of Metal Material for Marine Equipment and Application, Anshan Iron and Steel Research Institute of AnGang Group, Anshan 114009, China; (L.Y.); (F.A.); (Y.L.)
| | - Chao Wang
- School of Material and Metallurgy, University of Science and Technology Liaoning, Anshan 114000, China; (H.L.); (C.W.); (N.L.)
- Technology Research Institute of Benxi Steel Group, Benxi 117000, China
| | - Fangfang Ai
- The State Key Laboratory of Metal Material for Marine Equipment and Application, Anshan Iron and Steel Research Institute of AnGang Group, Anshan 114009, China; (L.Y.); (F.A.); (Y.L.)
| | - Yan Li
- The State Key Laboratory of Metal Material for Marine Equipment and Application, Anshan Iron and Steel Research Institute of AnGang Group, Anshan 114009, China; (L.Y.); (F.A.); (Y.L.)
| | - Na Li
- School of Material and Metallurgy, University of Science and Technology Liaoning, Anshan 114000, China; (H.L.); (C.W.); (N.L.)
| | - Zhengyi Jiang
- School of Material and Metallurgy, University of Science and Technology Liaoning, Anshan 114000, China; (H.L.); (C.W.); (N.L.)
- The State Key Laboratory of Metal Material for Marine Equipment and Application, Anshan Iron and Steel Research Institute of AnGang Group, Anshan 114009, China; (L.Y.); (F.A.); (Y.L.)
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong 2522, Australia
- Correspondence: (H.Z.); (Z.J.); Tel.: +86-138-0492-7151 (H.Z.); +86-188-1650-7540 (Z.J.)
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Fang X, Liu CX, Zeng XR, Huang XM, Chen WL, Wang Y, Ai F. Orphan nuclear receptor COUP-TFII is an oncogenic gene in renal cell carcinoma. Clin Transl Oncol 2019; 22:772-781. [PMID: 31368079 DOI: 10.1007/s12094-019-02190-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Accepted: 07/17/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Chicken ovalbumin upstream promoter-transcription factor II (COUP-TFII) may be an oncogenic gene in renal cell carcinoma (RCC). However, the direct association between COUP-TFII expression and patient survival has not been investigated in patients with RCC, and the molecular oncogenesis of COUP-TFII in RCC remains unclear. METHODS The mRNA expression levels of COUP-TFII in the tumors of 283 patients with RCC were determined by RT-qPCR. The remaining 266 patients were categorized into low- and high-expression groups according to the cut off value generated by receiver operating curve (ROC) analysis. The function of COUP-TFII in RCC cells was tested by knockdown experiments in vitro. RESULTS In the present study, it was revealed that the mRNA expression levels of COUP-TFII were significantly higher in tumors compared with those in adjacent non-cancerous tissues, and that the overexpression of COUP-TFII was strongly associated with poor patient survival. It was further demonstrated that knockdown of COUP-TFII suppressed proliferation, and induced apoptosis and cell cycle arrest in RCC cells in vitro. This also resulted in the activation of the mitochondria-mediated apoptosis pathway, impaired migration and invasion of RCC cells through epithelial-mesenchymal transition in vitro, and suppressed tumor growth in vivo. In addition, it was revealed that the induction of cell migration and invasion by COUP-TFII was mediated, at least in part, by integrin subunit β1. CONCLUSIONS In summary, the present study indicated that COUP-TFII is an oncogenic gene in RCC, and a potential therapeutic target for the treatment of the disease.
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Affiliation(s)
- X Fang
- Department of Nephrology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, People's Republic of China
| | - C-X Liu
- Department of Nephrology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, People's Republic of China
| | - X-R Zeng
- Department of Nephrology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, People's Republic of China
| | - X-M Huang
- Department of Nephrology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, People's Republic of China
| | - W-L Chen
- Department of Nephrology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, People's Republic of China
| | - Y Wang
- Department of Nephrology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, People's Republic of China.
| | - F Ai
- Department of Emergency, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, People's Republic of China.
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Mao M, Xu T, Kang J, Zhang Y, Ai F, Zhou Y, Zhu L. Factors associated with long-term pessary use in women with symptomatic pelvic organ prolapse. Climacteric 2019; 22:478-482. [PMID: 30897024 DOI: 10.1080/13697137.2019.1582623] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- M. Mao
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - T. Xu
- Department of Epidemiology and Statistics, Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - J. Kang
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Y. Zhang
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - F. Ai
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Y. Zhou
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - L. Zhu
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
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Mao M, Ai F, Zhang Y, Kang J, Liang S, Xu T, Zhu L. Changes in the symptoms and quality of life of women with symptomatic pelvic organ prolapse fitted with a ring with support pessary. Maturitas 2018; 117:51-56. [DOI: 10.1016/j.maturitas.2018.09.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 07/16/2018] [Accepted: 09/18/2018] [Indexed: 10/28/2022]
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Zhang Y, Song X, Zhang Z, Mao M, Ai F, Kang J, Zhu L. Tension-free vaginal tape-obturator for the treatment of stress urinary incontinence: a 12-year prospective follow-up. BJU Int 2018; 123:E57-E62. [PMID: 30248230 DOI: 10.1111/bju.14555] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To evaluate the long-term safety and effectiveness of inside-out transobturator tape (tension-free vaginal tape-obturator, TVT-O) for the treatment of stress urinary incontinence (SUI). PATIENTS AND METHODS Between August 2004 and August 2006, 87 consecutive patients with SUI who underwent TVT-O were enrolled in this prospective cohort study. Patients with mixed UI, or pelvic organ prolapse requiring surgery, were excluded. Data relating to long-term postoperative complications, subjective satisfaction rate (Patient Global Impression of Improvement), objective cure rate (stress test), quality of life (QoL), and sexual function, were collected during follow-up. The Incontinence Impact Questionnaire (IIQ-7) and Pelvic Organ Prolapse/Urinary Incontinence Sexual Questionnaire (PISQ-12) were used to assess QoL and sexual function, respectively. Statistical analyses were performed using paired-sample t-tests. RESULTS At the 12-year follow-up, 73 patients (84%) were available for evaluation. Overall, the long-term complication rate was 45.2%. De novo overactive bladder was observed in 12.3% of patients. None of the patients reported severe voiding dysfunction that required treatment by tape removal or catheterisation. However, 16 patients (16/73, 21.9%) had voiding changes compared with their preoperative status. Persistent groin pain was reported in 1.4% of the patients, and tape exposure occurred in 5.5%. The subjective satisfaction rate and objective cure rate were 80.8% and 82.2%, respectively. Compared with preoperative scores, the IIQ-7 score decreased significantly (P < 0.05), whilst there was no significant difference in the PISQ-12 score (P = 0.893). CONCLUSIONS This 12-year follow-up study showed that TVT-O is a highly effective procedure for the treatment of SUI. The long-term complication rate appears to be slightly high, which should raise concern.
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Affiliation(s)
- Ye Zhang
- Department of Obstetrics and Gynecology, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, Beijing, China
| | - Xiaochen Song
- Department of Obstetrics and Gynecology, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, Beijing, China
| | - Zhibo Zhang
- Department of Obstetrics and Gynecology, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, Beijing, China
| | - Meng Mao
- Department of Obstetrics and Gynecology, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, Beijing, China
| | - Fangfang Ai
- Department of Obstetrics and Gynecology, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, Beijing, China
| | - Jia Kang
- Department of Obstetrics and Gynecology, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, Beijing, China
| | - Lan Zhu
- Department of Obstetrics and Gynecology, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, Beijing, China
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Zhang Y, Song X, Mao M, Kang J, Ai F, Zhu L. Tension-Free Vaginal Tape for the Treatment of Stress Urinary Incontinence: A 13-Year Prospective Follow-Up. J Minim Invasive Gynecol 2018; 26:754-759. [PMID: 30165182 DOI: 10.1016/j.jmig.2018.08.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 08/13/2018] [Accepted: 08/18/2018] [Indexed: 10/28/2022]
Abstract
STUDY OBJECTIVE To evaluate the long-term safety and efficacy of tension-free vaginal tape (TVT). DESIGN Prospective observational study (Canadian Task Force classification II-2). SETTING Tertiary referral center in China. PATIENTS Between January 2004 and December 2005, 85 consecutive patients who underwent the TVT procedure were included. Patients with mixed incontinence or pelvic organ prolapse requiring surgery were excluded. INTERVENTIONS TVT procedure. MEASUREMENTS AND MAIN RESULTS The primary outcomes were long-term postoperative complications. The secondary outcomes included long-term subjective satisfaction (Patient Global Impression of Improvement), objective cure rate (stress test), quality of life, and sexual function. At the 13-year follow-up, 70 patients (82%) were available for evaluation. De novo overactive bladder was observed in 15.7% of patients, and voiding symptoms were found in 17.1% of patients. None of the patients reported voiding dysfunction that needed treatment with tape removal or catheterization. Tape exposure occurred in 2.9% of patients. The subjective satisfaction rate and objective cure rate were 78.6% and 81.4%, respectively. CONCLUSION TVT is a safe and effective treatment for stress urinary incontinence, even at the 13-year follow-up. The prevalence rates of overactive bladder and voiding symptoms are increased with advancing age and should not be considered long-term postoperative complications.
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Affiliation(s)
- Ye Zhang
- Department of Gynecology and Obstetrics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Xiaochen Song
- Department of Gynecology and Obstetrics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Meng Mao
- Department of Gynecology and Obstetrics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Jia Kang
- Department of Gynecology and Obstetrics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Fangfang Ai
- Department of Gynecology and Obstetrics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Lan Zhu
- Department of Gynecology and Obstetrics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China.
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Mao M, Ai F, Zhang Y, Kang J, Liang S, Xu T, Zhu L. Predictors for unsuccessful pessary fitting in women with symptomatic pelvic organ prolapse: a prospective study. BJOG 2018; 125:1434-1440. [PMID: 29700950 DOI: 10.1111/1471-0528.15260] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/10/2018] [Indexed: 11/27/2022]
Affiliation(s)
- M Mao
- Department of Obstetrics and Gynaecology; Peking Union Medical College Hospital; Peking Union Medical College; Chinese Academy of Medical Sciences; Beijing China
| | - F Ai
- Department of Obstetrics and Gynaecology; Peking Union Medical College Hospital; Peking Union Medical College; Chinese Academy of Medical Sciences; Beijing China
| | - Y Zhang
- Department of Obstetrics and Gynaecology; Peking Union Medical College Hospital; Peking Union Medical College; Chinese Academy of Medical Sciences; Beijing China
| | - J Kang
- Department of Obstetrics and Gynaecology; Peking Union Medical College Hospital; Peking Union Medical College; Chinese Academy of Medical Sciences; Beijing China
| | - S Liang
- Department of Obstetrics and Gynaecology; Peking Union Medical College Hospital; Peking Union Medical College; Chinese Academy of Medical Sciences; Beijing China
| | - T Xu
- Department of Epidemiology and Statistics; Institute of Basic Medical Sciences; Peking Union Medical College; Chinese Academy of Medical Sciences; Beijing China
| | - L Zhu
- Department of Obstetrics and Gynaecology; Peking Union Medical College Hospital; Peking Union Medical College; Chinese Academy of Medical Sciences; Beijing China
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Abstract
OBJECTIVE This study aimed to investigate the prevalence of general anxiety disorder (GAD) among postmenopausal women with symptomatic pelvic organ prolapse (POP) and to identify its associated factors. METHODS A cross-sectional study was conducted among postmenopausal women with symptomatic POP. Sociodemographic data and medical histories were obtained. Participants completed the POP Quantification (POP-Q), the Pelvic Floor Impact Questionnaire-7 (PFIQ-7), and the Pelvic Floor Distress Inventory (PFDI-20) measures. Measures of GAD were obtained using the Generalized Anxiety Disorder-7 (GAD-7). The data were analyzed using independent sample t-tests, the Mann-Whitney U-test, χ2 tests, Fisher's exact tests and logistic regression. RESULTS Of the 177 participants interviewed, 19.2% had symptoms of GAD. There were no statistically significant differences in the sociodemographic characteristics or the POP-Q stage between women with and without GAD (p > 0.05). GAD was significantly associated with higher PFDI-20 and PFIQ-7 subscale scores (p < 0.05). After multiple logistic regression analyses, only the PFIQ-7 subscale UIQ-7 (odds ratio = 1.025, 95% confidence interval 1.007-1.043, p = 0.005) and the PFDI-20 subscale CRADI-8 (odds ratio = 1.025, 95% confidence interval 1.004-1.047, p = 0.021), which represented the impact on quality of life from lower urinary tract symptoms and the distress caused by bowel dysfunction, were risk factors that were independently associated with GAD. CONCLUSIONS GAD is prevalent in almost one-fifth of postmenopausal women with symptomatic POP. GAD is not associated with the severity of the POP-Q stage but is associated with higher scores for lower urinary tract and bowel dysfunction caused by POP.
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Affiliation(s)
- F Ai
- a Department of Obstetrics and Gynecology , Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College , Beijing , PR China
| | - M Deng
- a Department of Obstetrics and Gynecology , Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College , Beijing , PR China
| | - M Mao
- a Department of Obstetrics and Gynecology , Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College , Beijing , PR China
| | - T Xu
- b Department of Epidemiology and Statistics , Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College , Beijing , PR China
| | - L Zhu
- a Department of Obstetrics and Gynecology , Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College , Beijing , PR China
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Dokainish H, Teo K, Zhu J, Roy A, AlHabib KF, ElSayed A, Palileo-Villaneuva L, Lopez-Jaramillo P, Karaye K, Yusoff K, Orlandini A, Sliwa K, Mondo C, Lanas F, Prabhakaran D, Badr A, Elmaghawry M, Damasceno A, Tibazarwa K, Belley-Cote E, Balasubramanian K, Islam S, Yacoub MH, Huffman MD, Harkness K, Grinvalds A, McKelvie R, Bangdiwala SI, Yusuf S, Campos R, Chacón C, Cursack G, Diez F, Escobar C, Garcia C, Vilamajo OG, Hominal M, Ingaramo A, Kucharczuk G, Pelliza M, Rojas A, Villani A, Zapata G, Bourke P, Lanas F, Nahuelpan L, Olivares C, Riquelme R, Ai F, Bai X, Chen X, Chen Y, Gao M, Ge C, He Y, Huang W, Jiang H, Liang T, Liang X, Liao Y, Liu S, Luo Y, Lu L, Qin S, Tan G, Tan H, Wang T, Wang X, Wei F, Xiao F, Zhang B, Zheng T, Mendoza JA, Anaya MB, Gomez E, de Salazar DM, Quiroz F, Rodríguez M, Sotomayor MS, Navas AT, León MB, Montalvo LF, Jaramillo ML, Patiño EP, Perugachi C, Trujillo Cruz F, Elmaghawry M, Wagdy K, Bhardwaj A, Chaturvedi V, Gokhale GK, Gupta R, Honnutagi R, Joshi P, Ladhani S, Negi P, Roy A, Reddy N, Abdullah A, Hassan MA, Balasinga M, Kasim S, Tan W, Yusoff K, Damasceno A, Banze R, Calua E, Novela C, Chemane J, Akintunde A, Ansa V, Gbadamosi H, Karaye K, Mbakwem A, Mohammed S, Nwafor E, Ojji D, Olunuga T, Sa'idu BOH, Umuerri E, Alcaraz J, Palileo-Villanueva L, Palomares E, Timonera MR, Badr A, Alghamdi S, Alhabib K, Almasood A, Alsaif S, Elasfar A, Ghabashi A, Mimish L, Bester F, Kelbe D, Klug E, Sliwa K, Tibarzawa K, Abdalla O, Dimitri M, Mustafa H, Osman O, Saad A, Mondo C. Global mortality variations in patients with heart failure: results from the International Congestive Heart Failure (INTER-CHF) prospective cohort study. The Lancet Global Health 2017; 5:e665-e672. [DOI: 10.1016/s2214-109x(17)30196-1] [Citation(s) in RCA: 174] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 04/10/2017] [Accepted: 04/26/2017] [Indexed: 12/13/2022]
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Liu H, Yan F, Sun H, Li G, Ai F, Dong X. Ultrasonography of fetal cleft lip and palate in first-trimester. CLIN EXP OBSTET GYN 2017. [DOI: 10.12891/ceog3406.2017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Liu HL, Yan F, Sun HP, Li GQ, Ai F, Dong XD. Ultrasonography of fetal cleft lip and palate in first-trimester. CLIN EXP OBSTET GYN 2017; 44:408-412. [PMID: 29949283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
PURPOSE OF INVESTIGATION To explore the ultrasonographic methods towards cleft lip and palate (CLP) in first-trimester. MATERIALS AND METHODS 3,795 fetuses were scanned for facial structures including cross section of upper alveolar process, oblique coronal section of upper lip, and postnasal triangle section when measuring nuchal translucency (NT). The abnormal cases underwent ultrasonography for clear diagnosis at 17-18 gestational weeks (GWs), while the negative cases underwent systemic ultrasonography at 20-26 GWs, and followed up until birth. RESULTS Among the 3795 fetuses, 16 cases had CLP, with an incidence rate as 4.2%; 12 were detected in first trimester, with a detection rate of 75%, and the detection rate of bilateral CLP was 100%, four were missed, with a misdiagnosis rate of 25%, and 12 cases examined at 17-18 GWs met first-trimester diagnosis. Among the four missed cases, two were diagnosed with systemic ultrasonography, and two were diagnosed postnatally. All cases were confirmed after induction of labor or after birth. CONCLUSIONS Ultrasonography in first-trimester could diagnose severe case of CLP.
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Bin J, Ai F, Fan W, Zhou J, Zhang Z. Rapid Determination of Unsaturated Fatty Acids in Vegetable Oil by Raman Spectroscopy and Chemometrics. ANAL LETT 2016. [DOI: 10.1080/00032719.2015.1079209] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Qin S, Zhu Y, Ai F, Li Y, Bai B, Yao W, Dong L. MicroRNA-191 correlates with poor prognosis of colorectal carcinoma and plays multiple roles by targeting tissue inhibitor of metalloprotease 3. Neoplasma 2014; 61:27-34. [PMID: 24195505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
MicroRNA-191 (miR-191) is reported to be overexpressed in colorectal carcinoma (CRC), but the role of miR-191 in CRC progress remained unclear. This study demonstrated that High miR-191 expression was associated with clinical stage, lymph node metastasis, liver metastasis and depth of tumor invasion. Kaplan-Meier analysis indicated that patients with high miR-191 expression had a poor overall survival. Moreover, multivariate analysis showed that miR-191 was an independent prognostic factor in patients with CRC. Furthermore, we found that tissue inhibitor of metalloprotease 3 (TIMP3) was a direct target of miR-191 in colorectal cancer SW620 cells. TIMP3 downregulation mediated by miR-191 activated matrix metalloproteinases (MMPs) and thus promoted invasiveness of cancer cells. Anti-miR-191 could attenuate the invasiveness, suppress proliferation and induce apoptosis by restoring TIMP3 expression. Our results suggested that miR-191 might be a potential diagnostic and therapeutic target in patients with colorectal cancer.
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Qin S, Zhu Y, Ai F, Li Y, Bai B, Yao W, Dong L. MicroRNA-191 correlates with poor prognosis of colorectal carcinoma and plays multiple roles by targeting tissue inhibitor of metalloprotease 3. Neoplasma 2014. [DOI: 10.4149/neo_2014_005] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Dai H, Mu KT, Qi JP, Wang CY, Zhu WZ, Xia LM, Chen ZQ, Zhang H, Ai F, Morelli JN. Assessment of lateral geniculate nucleus atrophy with 3T MR imaging and correlation with clinical stage of glaucoma. AJNR Am J Neuroradiol 2011; 32:1347-53. [PMID: 21757515 DOI: 10.3174/ajnr.a2486] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Although previous animal studies have shown structural changes in ocular hypertension such as atrophy of the LGN, such changes have not been thoroughly studied in human glaucoma patients nor correlation made with clinical stage. Our aim was to investigate prospectively LGN atrophy in patients with POAG using 3T MR imaging and correlation with the clinical stage of disease. MATERIALS AND METHODS Twenty-six patients with known POAG and 26 age-matched healthy volunteers were included in this institutional review board-approved study. All subjects underwent imaging on a 3T MR imaging system with a PD and GM sequence. LGN height and volume were measured by 2 blinded neuroradiologists. Measurements were compared and correlated with clinical glaucoma severity as assessed by static threshold visual field parameters. RESULTS Average maximum LGN height in patients with glaucoma on PD images was 4.36 ± 0.61 mm (right) and 4.31 ± 0.61 mm (left), significantly less (P < 10⁻³) than respective measurements of 5.05 ± 0.41 and 4.99 ± 0.41 mm in volunteers. With the GM sequences, such respective measurements were also less (P < 10⁻³) in patients with glaucoma (4.20 ± 0.71 mm right, 4.00 ± 0.85 mm left) versus respective measurements in volunteers (4.88 ± 0.51 mm right, 4.77 ± 0.47 mm left). Average LGN volumes in the patient group were 98.0 ± 27.2 mm³ (right) and 93.7 ± 25.8 mm³ (left) with the PD sequence versus respective measurements of 85.2 ± 27.1 and 80.5 ± 23.6 mm³ with the GM sequence. All height and volume measurements were greater in volunteers (P < 10⁻³). In the patient group, both maximum height and volume of the LGN with both sequences were significantly correlated with cumulative clinical glaucoma stage (P < .05). CONCLUSIONS MR imaging measurements of LGN height and volume are diminished in patients with glaucoma, with the extent of atrophy correlating to clinical stage, suggesting a novel imaging marker of disease severity.
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Affiliation(s)
- H Dai
- Department of Radiology, Tongji Hospital, Huazhong University of Science and Technology University, Wuhan, China
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Pan XH, Jin WQ, Liu Y, Ai F, Jin F. In situ observation of β-BaB2O4microcrystal growth in glass matrix. Cryst Res Technol 2009. [DOI: 10.1002/crat.200900364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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26
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Zhang Y, Liu Y, Jiang W, Pan XH, Jin WQ, Ai F, Wang HC. Effect of axial vibration on Bi 12SiO 20crystal growth by vertical Bridgman technique. Cryst Res Technol 2009. [DOI: 10.1002/crat.200800541] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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27
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Qu Y, Zhang Q, Zhou J, Ai F. Phenanthrene biodegradation by a novel Burkholderia sp. AFF and its crude extracts. J Biotechnol 2008. [DOI: 10.1016/j.jbiotec.2008.07.1594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Pan XH, Jin WQ, Ai F, Liu Y, Hong Y. Experimental study of bubble generation during β-BaB2O4 single crystal growth. Cryst Res Technol 2007. [DOI: 10.1002/crat.200610785] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Yuan YL, Ai F, Zhang J, Zang XB, Shen J, Lin SC. Grafting sulfobetaine monomer onto the segmented poly(ether-urethane) surface to improve hemocompatibility. J Biomater Sci Polym Ed 2003; 13:1081-92. [PMID: 12484485 DOI: 10.1163/156856202320813800] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Polyurethanes are widely used as blood-contacting biomaterials, due to their good biocompatibility and mechanical properties. Nevertheless, their blood compatibility is still not adequate for more demanding applications. Surface modification is an effective way to improve the hemocompatibility for biomaterials. The purpose of the present study was to synthesize a novel nonthrombogenic biomaterial by modifying the surface of polyurethane. Ozonization was used to introduce active peroxide groups onto the segmented poly(ether-urethane) (SPEU) film surface and graft polymerization of N,N'-dimethyl (methacryloyloxyethyl) ammonium propanesulfonate (DMAPS), a sulfobetaine structure, onto the ozone-activated SPEU surface was conducted. The SPEU-g-PDMAPS film was characterized by ATR-FTIR, XPS, and contact angle measurements. ATR-FTIR and XPS confirmed the graft polymerization. The grafted film possessed a relatively hydrophilic surface, as revealed by contact angle measurement. The blood compatibility of the grafted films was evaluated by a platelet-rich plasma (PRP) adhesion study and scanning electron microscopy, using SPEU film as the reference. No platelet adhesion was observed for the grafted films incubated with PRP at 37 degrees C for 60 and 180 min. This new sulfobetaine structure grafted biomaterial might have potential for biomedical applications.
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Affiliation(s)
- Y L Yuan
- Center of Research on Surface and Interface Chemical Engineering and Technology, Nanjing University, Nanjing, 210093, People's Republic of China
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30
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Lai Z, Lao Y, Ai F. [Poly-static quantitative perimetry for detection of open angle glaucoma]. Zhonghua Yan Ke Za Zhi 2000; 36:129-30. [PMID: 11853601] [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: 02/23/2023]
Abstract
OBJECTIVE To evaluate the sensitivity of poly-static quantitative perimetry for the detection of visual field defect in open angle glaucoma. METHODS 48 patients (95 eyes) of open angle glaucoma were examined with poly-static quantitative perimetry [Friedmann visual field analyzer (FVFA)] and dynamic perimetry (tangent screen) respectively. RESULTS 26 eyes showed small defect of visual field on tangent screen with 2/1,000 visual size, and 23 eyes (88%) showed the same defects checked with FVFA; visual field defects of early stage glaucoma were found in 26 eyes checked with FVFA, but only 16 eyes showed the same defects on tangent screen with 1/1,000 visual size; the visual field defects of glaucoma on tangent screen in 43 eyes were found larger when they were checked with FVFA. CONCLUSION Comparing with dynamic perimetry, poly-static quantitative perimetry is more sensitive to detect visual field defect of early stage glaucoma.
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Affiliation(s)
- Z Lai
- Department of Ophthalmology, Peking Union Medical College Hospital, Beijing 100730, China
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31
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Mao J, Zhao J, Sui R, Ai F. [Evaluating retinal nerve fiber layer by scanning laser ophthalmoscopy]. Zhonghua Yan Ke Za Zhi 1999; 35:43-6, 4. [PMID: 11835774] [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: 02/23/2023]
Abstract
OBJECTIVE To evaluate the efficiency of scanning laser ophthalmoscopy (SLO) on detecting retinal nerve fiber layer defects (RNFLD). METHODS 95 eyes with primary open angle glaucoma, 37 ocular hypertension, 83 glaucomatous suspect and 34 normal eyes were investigated by SLO to evaluate the retinal nerve fiber layer (RNFL). Recording tapes of 68 eyes were re-investigated by two investigators for estimating the intra- and inter-observer agreement. RESULTS The intra- and inter-observer agreement of the presence and types of RNFLD was fairly good (Kappa values were 0.66 - 0.76 and 0.59 - 0.65 respectively). The sensitivity and specificity in detecting RNFLD by SLO were 80.0% and 94.1% respectively. CONCLUSION The evaluation of RNFL by SLO is a quick, accurate and safe method. It may be clinically useful in the diagnosis of glaucoma.
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Affiliation(s)
- J Mao
- Department of Ophthalmology, Peking Union Medical College Hospital, Beijing 100730
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Zhang D, Wu C, Ai F. [Research of polymer coating in solid phase microextraction]. Se Pu 1999; 17:10-3. [PMID: 12548817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2023] Open
Abstract
The solid phase microextraction (SPME) is a new extraction technique which has been developed rapidly in 1990s. It is a fast, simple, solventless and sensitive method for analyzing environmental samples. However, the solid phase materials of SPME are relatively limited. This paper presents the research work on a new type of solid phase, polymethylvinylsiloxane (PMVS), used in SPME. The phase with 1% vinyl content could be used in light curing. The PMVS solution was coated on the surface of silica fiber and was quickly cured by UV. Two fibers with 87 microns and 44 microns thick PMVS coatings were prepared. They were compared with commercial polymer coating SPME fibers through Headspace SPME Gas Chromatograph (HS-SPME-GC). The adsorption and desorption kinetics of PMVS were studied. The HS-SPME system was optimized and the differences between HS-SPME and HS were investigated as well. The results indicated that PMVS is efficient in extracting volatile and semi-volatile organic compounds and PMVS showed the high thermostability and easy-coating properties. The detection limit of SPME using 88 microns PMVS coating was about 1-5 micrograms/L.
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Affiliation(s)
- D Zhang
- Department of Chemistry, Wuhan University, Wuhan, 430072
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Liu Q, Zhang M, Ai F, Jiang R, Hu T. [Treatment of acute optic neuritis with high dose of prednisone]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 1998; 20:230-5. [PMID: 11367712] [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: 04/16/2023]
Abstract
OBJECTIVE The benefit of glucocorticoid for the treatment of acute optic neuritis remains controversial. The efficacy of oral prednisone in 12 patients (14 eyes) with acute optic neuritis was reviewed. METHODS The time of visual symptoms before treatment was 3-15 days. The visual acuities were worse than 0.1 in all patients, with positive relative afferent pupillary defect. Visual field defect and delay latency of P100 in pattern VEP were also found. The regimen of glucocorticoid therapy was oral prednisone, starting with 160 mg daily followed by reducing the dosage by 20 mg every three days until 40 mg per day was attained and then tapering the dosage at 70 mg every other day until stoppage of the drug. The treatment was 3-11 months and 9 patients were followed up more than one year. RESULTS The visual acuities improved rapidly and stable. After 4 days, the visual acuity was 0.2 or better in 10 eyes. It was better than 0.6 in 12 eyes at 15 days. At 6 months, all had the visual acuity better than 0.7, with 85.7% equal or better than 1.0. CONCLUSIONS The regimen of oral prednisone beginning with 160 mg followed by tapering for three months would be feasible. Pattern VEP was a sensitive and credible sign for evaluating the extent of demyelination.
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Affiliation(s)
- Q Liu
- PUMC Hospital, CAMS and PUMC, Beijing 100730
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