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Tian L, Wang NL. Trachoma control: the SAFE strategy. Int J Ophthalmol 2018; 11:1887-1888. [PMID: 30588417 DOI: 10.18240/ijo.2018.12.01] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 11/20/2018] [Indexed: 11/23/2022] Open
Abstract
As a contagious bacterial infection that affects the conjunctival covering of the eye, the cornea and the eyelids, trachoma is controlled by an endorsed integrated strategy consisting of surgery for trichiasis, antibiotic therapy, facial cleanliness and environmental improvement, namely, the SAFE strategy developed by World Health Organization. Developed based on evidence from previous field trials and constantly modified in practice, SAFE strategy has greatly boosted the progress in trachoma control. Regardless of the fact that there are still many pending questions, national program coordinators are convinced that trachoma control initiative based on SAFE strategy would be effective.
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Affiliation(s)
- Lei Tian
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University; Beijing Ophthalmology & Vision Science Key Lab, Beijing 100730, China
| | - Ning-Li Wang
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University; Beijing Ophthalmology & Vision Science Key Lab, Beijing 100730, China
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Wang WW, Wang HZ, Liu JR, Zhang XF, Li M, Huo YJ, Yang XG. Diagnostic ability of ganglion cell complex thickness to detect glaucoma in high myopia eyes by Fourier domain optical coherence tomography. Int J Ophthalmol 2018; 11:791-796. [PMID: 29862177 DOI: 10.18240/ijo.2018.05.12] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 04/16/2018] [Indexed: 11/23/2022] Open
Abstract
AIM To evaluate the ability of macular ganglion cell complex (GCC) thickness using Fourier domain optical coherence tomography (FD-OCT) to detect glaucoma in highly myopic eyes. METHODS Cross-sectional study. A total of 114 participants, consecutively were enrolled. Macular GCC thickness and peripapillary retinal nerve fiber layer (RNFL) thickness were obtained with RTVue FD-OCT. Receiver operating characteristics curves were constructed for each measurement parameter, and areas under the curves (AUCs) were compared. RESULTS Both the average GCC and average RNFL thickness showed negative correlations with axial length (rGCC=-0.404, P=0.001; rRNFL=-0.561, P<0.001). The largest AUCs from GCC, and RNFL parameters were 0.968 [global loss volume (GLV)], and 0.855 (average RNFL), respectively. GLV was significantly better for detecting high myopic glaucoma than average RNFL (P<0.001). CONCLUSION Macular GCC thickness has higher diagnostic power than peripapillary RNFL thickness to discriminate glaucoma patients from non-glaucoma subjects in high myopia.
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Affiliation(s)
- Wei-Wei Wang
- Department of Ophthalmology, Xi'an No. 4 Hospital, Shaanxi Ophthalmic Medical Center, Affiliated Guangren Hospital School of Medicine, Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Huai-Zhou Wang
- Department of Ophthalmology, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Jian-Rong Liu
- Department of Ophthalmology, Xi'an No. 4 Hospital, Shaanxi Ophthalmic Medical Center, Affiliated Guangren Hospital School of Medicine, Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Xi-Fang Zhang
- Department of Ophthalmology, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Meng Li
- Department of Ophthalmology, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Yan-Jiao Huo
- Department of Ophthalmology, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Xin-Guang Yang
- Department of Ophthalmology, Xi'an No. 4 Hospital, Shaanxi Ophthalmic Medical Center, Affiliated Guangren Hospital School of Medicine, Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
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Li X, Liang QF, Su GY, Wu LY, Lu XX, Wang NL. Current Research of Chlamydial Infection Diseases in China. Chin Med J (Engl) 2018; 131:486-489. [PMID: 29451157 PMCID: PMC5830837 DOI: 10.4103/0366-6999.225063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Affiliation(s)
- Xue Li
- Department of Laboratory Medicine, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Qing-Feng Liang
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Key Laboratory of Ophthalmology and Visual Sciences, Beijing 100005, China
| | - Guan-Yu Su
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Key Laboratory of Ophthalmology and Visual Sciences, Beijing 100005, China
| | - Li-Yuan Wu
- Department of Laboratory Medicine, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Xin-Xin Lu
- Department of Laboratory Medicine, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Ning-Li Wang
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Key Laboratory of Ophthalmology and Visual Sciences, Beijing 100005, China
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Hu A, Wang N. Enlightenment of blinding trachoma elimination in China. SCIENCE CHINA. LIFE SCIENCES 2017; 60:1453-1456. [PMID: 29285712 DOI: 10.1007/s11427-017-9234-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 11/27/2017] [Indexed: 10/18/2022]
Affiliation(s)
- Ailian Hu
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Vision Science Key Lab, Beijing, 100730, China.
| | - Ningli Wang
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Vision Science Key Lab, Beijing, 100730, China.
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Feng L, Lu X, Yu Y, Wang T, Luo S, Sun Z, Duan Q, Wang N, Song L. Survey, Culture, and Genome Analysis of Ocular Chlamydia trachomatis in Tibetan Boarding Primary Schools in Qinghai Province, China. Front Cell Infect Microbiol 2017; 6:207. [PMID: 28119858 PMCID: PMC5220689 DOI: 10.3389/fcimb.2016.00207] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2016] [Accepted: 12/23/2016] [Indexed: 11/13/2022] Open
Abstract
Trachoma, the leading infectious cause of blindness worldwide, is an ancient human disease. Its existence in China can be traced back to as early as the twenty-seventh century BC. In modern China, the overall prevalence of trachoma has dramatically reduced, but trachoma is still endemic in many areas of the country. Here, we report that 26 (8%) of 322 students from two rural boarding schools of Qinghai province, west China, were identified as having ocular C. trachomatis infection; and 15 ocular C. trachomatis strains were isolated from these trachoma patients. Chlamydiae in 37 clinical samples were genotyped as type B based on ompA gene analyses. Three ompA variants with one or two in-between SNP differences in the second or fourth variable domain were found. C. trachomatis strains QH111L and QH111R were from the same patient's left and right conjunctival swabs, respectively, but their ompA genes have a non-synonymous base difference in the second variable domain. Moreover, this SNP only exists in this single sample, suggesting QH111L is a newly emerged ompA variant. Interestingly, chromosomal phylogeny analysis found QH111L clusters between a branch of two type B strains and a branch of both A and C strains, but is significantly divergent from both branches. Comparative chromosome analysis found that compared to sequences of reference B/TZ1A828/OT strain, 12 of 22 QH111L's chromosomal genes exhibiting more than nine SNPs have the best homology with reciprocal genes of UGT strains while 9 of 22 genes are closest to those of type C strains. Consistent with findings of UGT-type genetic features in the chromosome, the QH111L plasmid appears to be intermediate between UGT and classical ocular plasmids due to the existence of UGT-type SNPs in the QH111L plasmid. Moreover, the QH111L strain has a unique evolutionarily older cytotoxin region compared to cytotoxin regions of other C. trachomatis strains. The genome analyses suggest that the QH111L strain is derived from recombinations between UGT and classical ocular ancestors. This is the first study of culture and characterization of ocular C. trachomatis in Qinghai Tibetan areas.
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Affiliation(s)
- Le Feng
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology Beijing, China
| | - Xinxin Lu
- Beijing Institute of Ophthalmology, Beijing Tongren Hospital, Capital Medical University Beijing, China
| | - Yonghui Yu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology Beijing, China
| | - Tao Wang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology Beijing, China
| | - Shengdong Luo
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology Beijing, China
| | - Zhihui Sun
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology Beijing, China
| | - Qing Duan
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology Beijing, China
| | - Ningli Wang
- Beijing Institute of Ophthalmology, Beijing Tongren Hospital, Capital Medical University Beijing, China
| | - Lihua Song
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology Beijing, China
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Liu T, Liang Q, Hu A, Feng G, Wang N, Peng X, Baudouin C, Labbé A. Elimination of blinding trachoma in China. J Fr Ophtalmol 2016; 39:836-842. [PMID: 27865692 DOI: 10.1016/j.jfo.2016.10.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 09/28/2016] [Accepted: 10/04/2016] [Indexed: 10/20/2022]
Abstract
OBJECTIVE To present the change in the prevalence of blindness caused by trachoma between 1987 and 2006 by secondary data analysis based on two China National Sample Surveys on Disability (CNSSD). METHODS Secondary data analysis was performed on two China National Sample Surveys on Disability (CNSSD), which were national representative household surveys conducted in 1987 and 2006. The prevalence of blindness caused by trachoma was estimated by 10-year age group. In addition, the proportion of various causes of blindness was evaluated. The geographical distribution of blindness caused by trachoma both in 1987 and 2006 was analyzed in order to visualize the hot spots of blinding trachoma in China. RESULTS The prevalence of blindness caused by trachoma in China decreased from 51.5/100,000 in 1987 to 17.6/100,000 in 2006. In addition, the proportion of blindness attributed to trachoma also decreased from 10.1% (1987) to 0.9% (2006). Moreover, the prevalence of blindness caused by trachoma was over 200/100,000 in 2.2% of sampled counties in 2006 as compared to 8.6% in 1987. The hot spots of blinding trachoma were shown to be limited to underdeveloped mountain areas in Hubei and Guizhou provinces. CONCLUSION Although blinding trachoma is no longer the leading cause of blindness in China since the 2000's, the prevalence of trachoma should still be monitored in some underdeveloped mountain areas. Therefore, health organization must continue to fight against blinding trachoma in underdeveloped areas.
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Affiliation(s)
- T Liu
- Department of epidemiology and biostatistics, school of public health, Capital medical university, No.10, Xitoutiao, 100069 You An Men, Beijing, China
| | - Q Liang
- Beijing institute of ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Key laboratory of ophthalmology and visual sciences, 100005 Beijing, China
| | - A Hu
- Beijing institute of ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Key laboratory of ophthalmology and visual sciences, 100005 Beijing, China
| | - G Feng
- Center of clinical epidemiology & evidence-based medicine, Beijing children's hospital, capital medical university, Beijing, China
| | - N Wang
- Beijing institute of ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Key laboratory of ophthalmology and visual sciences, 100005 Beijing, China
| | - X Peng
- Department of epidemiology and biostatistics, school of public health, Capital medical university, No.10, Xitoutiao, 100069 You An Men, Beijing, China; Center of clinical epidemiology & evidence-based medicine, Beijing children's hospital, capital medical university, Beijing, China.
| | - C Baudouin
- Beijing institute of ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Key laboratory of ophthalmology and visual sciences, 100005 Beijing, China; Quinze-Vingts national ophthalmology hospital, 75012 Paris, France; Versailles Saint-Quentin-en-Yvelines university, 78000 Versailles, France; Inserm, U968, 75012 Paris, France; UPMC Université Paris 06, UMR_S 968, institut de la vision, 75012 Paris, France; CNRS, UMR_7210, 75012 Paris, France
| | - A Labbé
- Beijing institute of ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Key laboratory of ophthalmology and visual sciences, 100005 Beijing, China; Quinze-Vingts national ophthalmology hospital, 75012 Paris, France; Versailles Saint-Quentin-en-Yvelines university, 78000 Versailles, France; Inserm, U968, 75012 Paris, France; UPMC Université Paris 06, UMR_S 968, institut de la vision, 75012 Paris, France; CNRS, UMR_7210, 75012 Paris, France
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Elimination of blinding trachoma in China: why is further study necessary? SCIENCE CHINA. LIFE SCIENCES 2016; 59:539-40. [PMID: 27225256 DOI: 10.1007/s11427-016-5064-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Indexed: 12/11/2022]
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