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Gong GS, Muyayalo KP, Zhang YJ, Lin XX, Liao AH. Flip a coin: cell senescence at the maternal-fetal interface†. Biol Reprod 2023; 109:244-255. [PMID: 37402700 DOI: 10.1093/biolre/ioad071] [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: 04/17/2023] [Revised: 06/23/2023] [Accepted: 06/27/2023] [Indexed: 07/06/2023] Open
Abstract
During pregnancy, cell senescence at the maternal-fetal interface is required for maternal well-being, placental development, and fetal growth. However, recent reports have shown that aberrant cell senescence is associated with multiple pregnancy-associated abnormalities, such as preeclampsia, fetal growth restrictions, recurrent pregnancy loss, and preterm birth. Therefore, the role and impact of cell senescence during pregnancy requires further comprehension. In this review, we discuss the principal role of cell senescence at the maternal-fetal interface, emphasizing its "bright side" during decidualization, placentation, and parturition. In addition, we highlight the impact of its deregulation and how this "dark side" promotes pregnancy-associated abnormalities. Furthermore, we discuss novel and less invasive therapeutic practices associated with the modulation of cell senescence during pregnancy.
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Affiliation(s)
- Guang-Shun Gong
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, P.R. China
| | - Kahindo P Muyayalo
- Department of Obstetrics and Gynecology, University of Kinshasa, Kinshasa, D.R. Congo
| | - Yu-Jing Zhang
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, P.R. China
| | - Xin-Xiu Lin
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, P.R. China
| | - Ai-Hua Liao
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, P.R. China
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Muyayalo KP, Tao D, Lin XX, Zhang YJ. Age-related changes in CD4 + T and NK cell compartments may contribute to the occurrence of pregnancy loss in advanced maternal age. J Reprod Immunol 2023; 155:103790. [PMID: 36621090 DOI: 10.1016/j.jri.2022.103790] [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] [Received: 09/19/2022] [Revised: 12/03/2022] [Accepted: 12/21/2022] [Indexed: 12/25/2022]
Abstract
A recent study characterized novel immune cell subsets (T, NK, and γδ T cell subsets) related to recurrent pregnancy loss (RPL). This study aims to assess whether these RPL-related immune cell subsets are affected by aging. The percentages of peripheral blood immunes cells from nulligravida women (NGW), women with a history of normal pregnancy (NP), and women with a history of pregnancy loss (PL) were detected by flow cytometry. The correlations between maternal age and cell percentages were assessed. We found a significant positive correlation between PL and maternal age. The percentages of effector memory CD4+ T (CD3+ CD4+ CD45RA¯ CCR7¯), terminally differentiated CD4+ T (CD3+ CD4+ CD45RA+ CCR7¯), and mature NK cells (CD3¯ CD56+lo) significantly increased with maternal age. A significant decrease in the percentage of Naïve CD4+ T cells (CD3+ CD4+ CD45RA+ CCR7+) with age was observed in women from the NP group. Women aged 35 or older had significantly higher percentages of effector memory CD4+ T cells, terminally differentiated CD4+ T cells, and mature NK cells than younger women. Maternal age positively correlates with terminally differentiated CD4+ T, effector memory CD4+ T, and mature NK cell percentages. In contrast, an inverse correlation was observed between Naïve CD4+ T cell and age among women from the NP group. Our findings indicate that age-related CD4+ T and NK cell dysregulation might be involved in the pathogenesis of PL in women with advanced maternal age. The underlying mechanism needs further investigation.
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Affiliation(s)
- Kahindo P Muyayalo
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China.
| | - Ding Tao
- School of Data Science, The Chinese University of Hong Kong, Shenzhen, PR China
| | - Xin-Xiu Lin
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Yu-Jing Zhang
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
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Wang J, Zhao SJ, Wang LL, Lin XX, Mor G, Liao AH. Leukocyte immunoglobulin-like receptor subfamily B: A novel immune checkpoint molecule at the maternal-fetal interface. J Reprod Immunol 2023; 155:103764. [PMID: 36434938 DOI: 10.1016/j.jri.2022.103764] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 10/22/2022] [Accepted: 11/10/2022] [Indexed: 11/15/2022]
Abstract
Due to their crucial roles in embryo implantation, maternal-fetal tolerance induction, and pregnancy progression, immune checkpoint molecules (ICMs), such as programmed cell death-1, cytotoxic T-lymphocyte antigen 4, and T cell immunoglobulin mucin 3, are considered potential targets for clinical intervention in pregnancy complications. Despite the considerable progress on these molecules, our understanding of ICMs at the maternal-fetal interface is still limited. Identification of alternative and novel ICMs and the combination of multiple ICMs is urgently needed for deeply understanding the mechanism of maternal-fetal tolerance and to discover the causes of pregnancy complications. Leukocyte immunoglobulin-like receptor subfamily B (LILRB) is a novel class of ICMs with strong negative regulatory effects on the immune response. Recent studies have revealed that LILRB is enriched in decidual immune cells and stromal cells at the maternal-fetal interface, which can modulate the biological behavior of immune cells and promote immune tolerance. In this review, we introduce the structural features, expression profiles, ligands, and orthologs of LILRB. In addition, the potential mechanisms and functions mediated by LILRB for sustaining the maternal-fetal tolerance microenvironment, remodeling the uterine spiral artery, and induction of pregnancy immune memory are summarized. We have also provided new suggestions for further understanding the roles of LILRB and potential therapeutic strategies for pregnancy-related diseases.
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Affiliation(s)
- Jing Wang
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Si-Jia Zhao
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Li-Ling Wang
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Xin-Xiu Lin
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Gil Mor
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China; C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, MI, USA
| | - Ai-Hua Liao
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China.
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Xu QH, Muyayalo KP, Zhang YJ, Wang H, Lin XX, Liao AH. Altered vitamin D metabolism is involved in the dysregulation of γδT cell function and their crosstalk with trophoblasts in recurrent pregnancy loss. Am J Reprod Immunol 2022; 89:e13581. [PMID: 35704547 DOI: 10.1111/aji.13581] [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] [Received: 04/05/2022] [Revised: 05/23/2022] [Accepted: 06/01/2022] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Recurrent pregnancy loss (RPL) is a common disease characterized by immune dysfunction and vitamin D deficiency. This study aimed to investigate vitamin D metabolism and γδT cell phenotypes at the maternal-fetal interface in women with early normal pregnancy (NP) and RPL and to determine the effects of vitamin D on the functions of γδT cells and their crosstalk with trophoblasts. METHODS The levels of 25-(OH)VD3 , the expression of vitamin D metabolic enzymes in the villi, and the proportion of γδT cells in the decidua were detected in women with NP and RPL. After treatment with different concentrations of vitamin D, the mRNA expression of the vitamin D receptor (VDR), cytokines, and transcription factors was detected in Vδ2+ γδT cells. In addition, the proliferation, migration, and invasion of HTR-8/SVneo trophoblasts were determined by co-culturing them with vitamin D-treated Vδ2+ γδT cells and their supernatants. RESULTS In women with RPL, the level of 25-(OH)VD3 in the villi was increased; however, that of CYP27B1 (enzyme converting 25-(OH)VD3 into 1,25-(OH)2 VD3 ) was decreased. In addition, the proportion of Vδ2+ γδT cells increased, whereas that of Foxp3+ Vδ2+ γδT cells decreased in the decidua of women with RPL. An in vitro study showed that vitamin D increased the expression of VDR mRNA and Foxp3, but decreased the expression of IFN-γ mRNA, in Vδ2+ γδT cells. Finally, vitamin D-treated Vδ2+ γδT cells promoted trophoblast migration and invasion. CONCLUSIONS Abnormal vitamin D metabolism and γδT cell proportions were present at the maternal-fetal interface in women with RPL. Under normal pregnancy conditions, vitamin D can induce the differentiation of decidual Vδ2+ γδT cells toward an anti-inflammatory phenotype (Treg-like γδT cells) and modulate the crosstalk between Vδ2+ γδT cells and trophoblasts. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Qian-Han Xu
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P.R. China
| | - Kahindo P Muyayalo
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P.R. China
| | - Yu-Jing Zhang
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P.R. China
| | - Huan Wang
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P.R. China
| | - Xin-Xiu Lin
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P.R. China
| | - Ai-Hua Liao
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P.R. China
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Tang XH, Lin XX, Li X, Zhou ZG. [Interpretation of the management of type 1 diabetes in adults: a consensus report by the American Diabetes Association (ADA) and the European Association for the Study of Diabetes (EASD) in 2021]. Zhonghua Yi Xue Za Zhi 2022; 102:1139-1147. [PMID: 35462497 DOI: 10.3760/cma.j.cn/112137-20211011-02244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The American Diabetes Association (ADA) and the European Association for the Study of Diabetes (EASD) convened a writing group to develop a consensus report on the management of type 1 diabetes in adults in September 2021. The writing group has proposed principles of the diagnosis and management of adult patients with type 1 diabetes, and has made suggestions for glycemic control with individualized glycemic targets to avoid hypoglycemia. They have also emphasized the importance of education and support for the self-management of diabetes in the management of type 1 diabetes.
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Affiliation(s)
- X H Tang
- Department of Metabolism and Endocrinology, the Second Xiangya Hospital, Central South University; Key Laboratory of Diabetes Immunology (Central South University), Ministry of Education; National Clinical Research Center for Metabolic Diseases, Changsha 410011, China
| | - X X Lin
- Department of Metabolism and Endocrinology, the Second Xiangya Hospital, Central South University; Key Laboratory of Diabetes Immunology (Central South University), Ministry of Education; National Clinical Research Center for Metabolic Diseases, Changsha 410011, China
| | - X Li
- Department of Metabolism and Endocrinology, the Second Xiangya Hospital, Central South University; Key Laboratory of Diabetes Immunology (Central South University), Ministry of Education; National Clinical Research Center for Metabolic Diseases, Changsha 410011, China
| | - Z G Zhou
- Department of Metabolism and Endocrinology, the Second Xiangya Hospital, Central South University; Key Laboratory of Diabetes Immunology (Central South University), Ministry of Education; National Clinical Research Center for Metabolic Diseases, Changsha 410011, China
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Lin XX, Xie YM, Zhao SJ, Liu CY, Mor G, Liao AH. Human leukocyte antigens: the unique expression in trophoblasts and their crosstalk with local immune cells. Int J Biol Sci 2022; 18:4043-4052. [PMID: 35844794 PMCID: PMC9274495 DOI: 10.7150/ijbs.73616] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 06/01/2022] [Indexed: 11/15/2022] Open
Abstract
Trophoblasts differentiate and form the placenta during pregnancy in a complex and finely orchestrated process, which is dependent on the establishment of maternal-fetal immune tolerance and the proper function of trophoblasts. Trophoblasts express HLA-C and non-classical HLA-Ib molecules (HLA-E, HLA-F, and HLA-G). Numerous studies have shown that the unique expression pattern of the HLA molecules is closely linked to the successful acceptance of allogeneic fetus by the mother during pregnancy. However, some controversies still exist concerning the exact expression and recognition patterns of HLA molecules in different trophoblast subpopulations and cell lines. Thus, we summarize three types of trophoblast subpopulations as well as the common trophoblast lineages. Then, the classification and structural characteristics of HLA molecules were elucidated. Finally, the presence of HLA-C and non-classical HLA-Ib molecules (HLA-E, HLA-F, and HLA-G) in various trophoblasts and cell lines, as well as their potential role in establishing and maintaining normal pregnancy were also discussed. Together, this review will help people comprehensively understand the complex immune interactions between maternal and fetal crosstalk during pregnancy and ultimately better understand the physiological and pathological etiologies of pregnancy.
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Liu H, Lin XX, Huang XB, Huang DH, Song S, Chen YJ, Tang J, Tao D, Yin ZN, Mor G, Liao AH. Systemic Characterization of Novel Immune Cell Phenotypes in Recurrent Pregnancy Loss. Front Immunol 2021; 12:657552. [PMID: 34122414 PMCID: PMC8195235 DOI: 10.3389/fimmu.2021.657552] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Accepted: 03/31/2021] [Indexed: 12/30/2022] Open
Abstract
Recurrent pregnancy loss (RPL) is a disturbing disease in women, and 50% of RPL is reported to be associated with immune dysfunction. Most previous studies of RPL focused mainly on the relationship between RPL and either T cells or natural killer (NK) cells in peripheral blood and the decidua; few studies presented the systemic profiles of the peripheral immune cell subsets in RPL women. Herein, we simultaneously detected 63 immune cell phenotypes in the peripheral blood from nonpregnant women (NPW), women with a history of normal pregnancy (NP) and women with a history of RPL (RPL) by multi-parameter flow cytometry. The results demonstrated that the percentages of naïve CD4+ T cells, central memory CD4+ T cells, naïve CD8+ T cells, mature NK cells, Vδ1+ T cells and the ratio of Vδ1+ T cells/Vδ2+ T cells were significantly higher in the RPL group than those in the NPW and NP groups, whereas the percentages of terminal differentiated CD4+ T cells, effective memory CD4+ T cells, immature NK cells and Vδ2+ T cells were significantly lower in the RPL group than those in the NPW and NP groups. Interestingly, we found that peripheral T helper (TPH) cells were more abundant in the NPW group than in the NP and RPL groups. In addition, we also determined the 5th percentile lower limit and 95th percentile upper limit of the significantly changed immunological parameters based on the files of the NPW group. Taken together, this is the first study to simultaneously characterize the multiple immune cell subsets in the peripheral blood at a relatively large scale in RPL, which might provide a global readout of the immune status for clinicians to identify clinically-relevant immune disorders and guide them to make clear and individualized advice and treatment plans.
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Affiliation(s)
- Hong Liu
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xin-Xiu Lin
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiao-Bo Huang
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dong-Hui Huang
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Su Song
- Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yang-Jiao Chen
- Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jing Tang
- Department of Gynecology, Maternal and Child Health Hospital of Hubei Province, Wuhan, China
| | - Ding Tao
- School of Data Science, The Chinese University of Hong Kong, Shenzhen, China
| | - Zhi-Nan Yin
- Zhuhai Precision Medical Center, Zhuhai People's Hospital, Jinan University, Zhuhai, China.,The Biomedical Translational Research Institute, Faculty of Medical Science, Jinan University, Guangzhou, China
| | - Gil Mor
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,C.S. Mott Center for Human Growth and Development, School of Medicine, Wayne State University, Detroit, MI, United States
| | - Ai-Hua Liao
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Chen QY, Chang L, Qiu YJ, Ying HR, Chang SJ, Zhang Y, Chen ZA, Ma G, Lin XX. Comparison of the efficacy between topical timolol and pulsed dye laser in the treatment of ulcerated infantile haemangiomas: a randomized controlled study. J Eur Acad Dermatol Venereol 2020; 35:e303-e305. [PMID: 33289216 DOI: 10.1111/jdv.17057] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Q Y Chen
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - L Chang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Y J Qiu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - H R Ying
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - S J Chang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Y Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Z A Chen
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - G Ma
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,Department of Laser and Aesthetic Medicine, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - X X Lin
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,Department of Laser and Aesthetic Medicine, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Wu Y, Yu RJ, Lin XX, Guo WY. [Sturge-Weber syndrome in port-wine stain patients: a retrospective study on the clinical features and screening strategy]. Zhonghua Yan Ke Za Zhi 2017; 53:753-757. [PMID: 29050188 DOI: 10.3760/cma.j.issn.0412-4081.2017.10.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the clinical characteristics of Sturge-Weber syndrome (SWS) in the patients with Port-wine stain (PWS). Methods: A total of 279 PWS patients, 164 males, 115 females with a median age of first visit 17.00 (4.75, 56.00) months. Most of the PWS patients were referred to the Ophthalmology Department for screening eye problems when the cutaneous angiomas involved the ophthalmic division of the trigeminal nerve distribution. The intraocular pressure (IOP), cup to disk ratio (C/D), corneal condition and other essential measurements were examined to screen glaucoma or choroidal hemangioma. The differences of age, gender and vascular ectasia in the ipsilateral eyes were compared among PWS and SWS patients with chi-square test. The differences about the first visit time, IOP, C/D and corneal diameters were evaluated with independent-sample T test or nonparametric test followed by Mann-Whitney U test. Results: A total number of 66 out of 279 PWS patients (23.7%) were confirmed as SWS with glaucoma. The IOP of the ipsilateral eye with vascular ectasia in PWS and SWS was 13.00 mmHg (1 mmHg=0.133 kPa) (IQR: 9.75, 17.00) and 23.00 mmHg (20.00, 32.00), respectively (Z=-8.212, P<0.001); the IOP differences between the ipsilateral and contralateral eye in PWS and SWS was 1mmHg (0, 2) and 7 mmHg (3, 11) respectively; the C/D in the ipsilateral eye and the contralateral eye was 0.30 (0.30, 0.35) and 0.7 (0.6, 0.8) respectively in SWS cases with secondary glaucoma. Conclusions: There is a high proportion of SWS with glaucoma in ophthalmic division affected PWS patients. Fundus examinations were necessary for this type of patients. (Chin J Ophthalmol, 2017, 53:753-757).
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Affiliation(s)
- Y Wu
- Department of Ophthalmology, Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
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Wang HY, Jia HY, Lin XX, Lian B, Zhang T. [The surrounding radiation dose of iodine-125 seeds on normal larynx tissue in rabbits]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:1957-1959. [PMID: 29798274 DOI: 10.13201/j.issn.1001-1781.2016.24.014] [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] [Received: 08/14/2016] [Indexed: 11/12/2022]
Abstract
Objective:To monitor the change of the radiation dose of the rabbits which were implanted rasioactive 125I seed into the normal laryngeal tiseue at different time,and to evaluate the safety of radiation protection. Method:Sixty New Zwaland rabbits, weighing 2.15-2.30 kg,were randomly divided into 5 groups:7 d,1month,2 month,4 month group and the control group, 12 rabbits in each group Iodine-125 of 0.8 mCi were implanted into the right side of the first trachea ring. At the different time and different distance, the surrounding radiation dose was measured after 4 months of implanting. The results were analyzed in statistics. Result:With the increase of the distance and the prolong of the time, the radiation dose was decreasing,and with the increase of distance,the radiation dose decreased slowly. At the site of 1 meter from the seeds, the detected dose is close to the natural background radiation dose. Conclusion:The clinical application of radioactive 125I seed interstitial implant is easy to protected,the surrounding close contacts is satety.
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Affiliation(s)
- H Y Wang
- Department of Otolaryngology,the First Affiliated Hospital of Ji'nan University,Guangzhou
| | - H Y Jia
- Department of Otolaryngology,the First Affiliated Hospital of Ji'nan University,Guangzhou
| | - X X Lin
- Department of Otolaryngology,the First Affiliated Hospital of Ji'nan University,Guangzhou
| | - B Lian
- Department of Otolaryngology,the First Affiliated Hospital of Ji'nan University,Guangzhou
| | - T Zhang
- Department of Otolaryngology,the First Affiliated Hospital of Ji'nan University,Guangzhou
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Lin XX, Zeng Y, Zhong SH, Huang ZG, Qian HQ, Ling J, Zhu JB, Shen WZ. Realization of improved efficiency on nanostructured multicrystalline silicon solar cells for mass production. Nanotechnology 2015; 26:125401. [PMID: 25736199 DOI: 10.1088/0957-4484/26/12/125401] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We report the realization of both excellent optical and electrical properties of nanostructured multicrystalline silicon solar cells by a simple and industrially compatible technique of surface morphology modification. The nanostructures are prepared by Ag-catalyzed chemical etching and subsequent NaOH treatment with controllable geometrical parameters and surface area enhancement ratio. We have examined in detail the influence of different surface area enhancement ratios on reflectance, carrier recombination characteristics and cell performance. By conducting a quantitative analysis of these factors, we have successfully demonstrated a higher-than-traditional output performance of nanostructured multicrystalline silicon solar cells with a low average reflectance of 4.93%, a low effective surface recombination velocity of 6.59 m s(-1), and a certified conversion efficiency of 17.75% on large size (156 × 156 mm(2)) silicon cells, which is ∼0.3% higher than the acid textured counterparts. The present work opens a potential prospect for the mass production of nanostructured solar cells with improved efficiencies.
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Affiliation(s)
- X X Lin
- Institute of Solar Energy, Laboratory of Condensed Matter Spectroscopy and Opto-Electronic Physics, and Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China. Department of Mathematics and Physics, Shanghai Dian Ji University, Shanghai 201306, People's Republic of China
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Abstract
We report the realization of high performance silicon nanowire (SiNW) based solar cells with a conversion efficiency of 17.11% and a large size of 125 × 125 mm(2). The key factor for success lies in an efficient approach of dielectric passivation to greatly enhance the electrical properties while keeping the advantage of excellent light trapping of the SiNW structure. The suppression of carrier recombination has been demonstrated through the combination of the SiO2/SiNx stack, which exhibits a good passivation effect on heavily doped SiNWs via reducing both the Shockley-Read-Hall recombination and near surface Auger recombination. We have examined in detail the effects of different passivations and SiNW lengths on the effective minority carrier lifetime, reflectance and carrier recombination characteristics, as well as cell performance. The proposed passivation techniques can be easily adapted to conventional industrial manufacturing processes, providing a potential prospect of SiNW based solar cells in mass production.
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Affiliation(s)
- X X Lin
- Laboratory of Condensed Matter Spectroscopy and Opto-Electronic Physics, Department of Physics, and Institute of Solar Energy, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
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Chen XD, Hu XJ, Ma G, Lin XX. Monozygotic twins discordant for port wine stains support the post-zygotic mutation hypothesis. Clin Genet 2012; 83:397-8. [PMID: 22856353 DOI: 10.1111/j.1399-0004.2012.01926.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2012] [Revised: 06/02/2012] [Accepted: 06/29/2012] [Indexed: 12/01/2022]
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Mao JY, Chen LM, Hudson LT, Seely JF, Zhang L, Sun YQ, Lin XX, Zhang J. Application of a transmission crystal x-ray spectrometer to moderate-intensity laser driven sources. Rev Sci Instrum 2012; 83:043104. [PMID: 22559512 DOI: 10.1063/1.3700212] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
In the pursuit of novel, laser-produced x-ray sources for medical imaging applications, appropriate instrumental diagnostics need to be developed concurrently. A type of transmission crystal spectroscopy has previously been demonstrated as a survey tool for sources produced by high-power and high-energy lasers. The present work demonstrates the extension of this method into the study of medium-intensity laser driven hard x-ray sources with a design that preserves resolving power while maintaining high sensitivity. Specifically, spectroscopic measurements of characteristic Kα and Kβ emissions were studied from Mo targets irradiated by a 100 fs, 200 mJ, Ti: sapphire laser with intensity of 10(17) W/cm(2) to 10(18) W∕cm(2) per shot. Using a transmission curved crystal spectrometer and off-Rowland circle imaging, resolving powers (E/ΔE) of around 300 for Mo Kα(2) at 17.37 keV were obtained with an end-to-end spectrometer efficiency of (1.13 ± 0.10) × 10(-5). This sensitivity is sufficient for registering x-ray lines with high signal to background from targets following irradiation by a single laser pulse, demonstrating the utility of this method in the study of the development of medium-intensity laser driven x-ray sources.
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Affiliation(s)
- J Y Mao
- Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, CAS, Beijing 100190, China
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McKenna P, Robinson APL, Neely D, Desjarlais MP, Carroll DC, Quinn MN, Yuan XH, Brenner CM, Burza M, Coury M, Gallegos P, Gray RJ, Lancaster KL, Li YT, Lin XX, Tresca O, Wahlström CG. Effect of lattice structure on energetic electron transport in solids irradiated by ultraintense laser pulses. Phys Rev Lett 2011; 106:185004. [PMID: 21635098 DOI: 10.1103/physrevlett.106.185004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2011] [Indexed: 05/30/2023]
Abstract
The effect of lattice structure on the transport of energetic (MeV) electrons in solids irradiated by ultraintense laser pulses is investigated using various allotropes of carbon. We observe smooth electron transport in diamond, whereas beam filamentation is observed with less ordered forms of carbon. The highly ordered lattice structure of diamond is shown to result in a transient state of warm dense carbon with metalliclike conductivity, at temperatures of the order of 1-100 eV, leading to suppression of electron beam filamentation.
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Affiliation(s)
- P McKenna
- SUPA, Department of Physics, University of Strathclyde, Glasgow, United Kingdom.
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Lin XX, Li YT, Liu F, Liu BC, Du F, Wang SJ, Chen LM, Zhang L, Zheng Y, Liu X, Liu XL, Wang ZH, Ma JL, Wei ZY, Zhang J. Note: Diagnosing femtosecond laser-solid interactions with monochromatic Kα imager and x-ray pinhole camera. Rev Sci Instrum 2011; 82:036104. [PMID: 21456806 DOI: 10.1063/1.3567014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
An x-ray pinhole camera and a monochromatic K(α) imager are used to measure the interactions of intense femtosecond laser pulses with Cu foil targets. The two diagnostics give different features in the spot size and the laser energy scaling, which are resulted from different physical processes. Under our experimental conditions, the K(α) emission is mainly excited by the fast electrons transporting inside the cold bulk target. In contrast, the x-ray pinhole signals are dominated by the broadband thermal x-ray emission from the hot plasma at the front target surface.
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Affiliation(s)
- X X Lin
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
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Lin XX, Li YT, Liu BC, Liu F, Du F, Wang SJ, Lu X, Chen LM, Zhang L, Liu X, Wang J, Liu F, Liu XL, Wang ZH, Ma JL, Wei ZY, Zhang J. Effect of prepulse on fast electron lateral transport at the target surface irradiated by intense femtosecond laser pulses. Phys Rev E 2011; 82:046401. [PMID: 21230399 DOI: 10.1103/physreve.82.046401] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2010] [Revised: 07/09/2010] [Indexed: 11/07/2022]
Abstract
The effects of preplasma on lateral fast electron transport at front target surface, irradiated by ultraintense (>10(18) W/cm2) laser pulses, are investigated by Kα imaging technique. A large annular Kα halo with a diameter of ∼560 μm surrounding a central spot is observed. A specially designed steplike target is used to identify the possible mechanisms. It is believed that the halos are mainly generated by the lateral diffusion of fast electrons due to the electrostatic and magnetic fields in the preplasma. This is illustrated by simulated electron trajectories using a numerical model.
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Affiliation(s)
- X X Lin
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
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Lin XX, Xie QM, Shen WH, Chen Y. [Effects of fermented Cordyceps powder on pulmonary function in sensitized guinea pigs and airway inflammation in sensitized rats]. Zhongguo Zhong Yao Za Zhi 2001; 26:622-5. [PMID: 12776432] [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: 03/02/2023]
Abstract
OBJECTIVE To study Cordyceps (artificial fermented Cordyceps sinensis(Berk.) Sacc) powderin the treatment of asthma in the animal models. METHOD Pulmonary function and airway inflammation in vivo were investigated. RESULT Cordyceps, 5g.kg-1(ig), significantly inhibited bronchial challenge of ovalbumin-induced change of RL and Cdyn (P < 0.05) and inhibited antigen-induced increase of eosinophils in the BALF of rats (P < 0.05). CONCLUSION The results suggested cordyceps could be applied for the prevention and cure of asthma.
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Affiliation(s)
- X X Lin
- Zhejiang Respiratory Drugs Research Laboratory of State Drugs Administration of China, Zhejiang University College of Medicine, Hangzhou 310031, Zhejiang, China
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Fan XD, Qiu WL, Zhang ZY, Mao Q, Lin XX. [The DSA features of AVM of jaws]. Shanghai Kou Qiang Yi Xue 2001; 10:62-3, 92. [PMID: 14994084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
OBJECTIVE To evaluate the vascular architecture of AVM of jaws on DSA. METHODS 12 cases of AVM of jaws comprised this study group, and 5 cases in maxilla and 7 cases in mandible, respectively. Seldinger technique was applied to carry out carotid angiography under the guidance of DSA machine (PHILIPS V3000). RESULTS The DSA features of AVM of jaws included varix into the posterior area of jaws. The varix of the maxilla was supplied by the posterior superior alveolar artery and transversal facial artery when the soft tissue was involved, and the varix of the mandible was supplied by the inferior alveolar artery, maxillary and facial artery. CONCLUSION Angiography is considered necessary for the diagnosis and embolization of AVM of jaws, and the varix is the center of lesion.
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Affiliation(s)
- X D Fan
- Department of Radiology, Ninth People's Hospital, Shanghai Second Medical University, Shanghai 200011, China
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Lin XX, Wang W, Wu SF, Yang C, Chang TS. Treatment of capillary vascular malformation (port-wine stains) with photochemotherapy. Plast Reconstr Surg 1997; 99:1826-30. [PMID: 9180705] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
One-hundred and thirty patients (85 female, 45 male) with port-wine stains were treated with photodynamic therapy, also called photochemotherapy, which recently has become acknowledged as effective for a variety of malignant tumors. Probably based on the photochemical reaction with the generation of toxic species, photochemotherapy results in endothelial cell injury and death of abnormal capillaries under overlying epidermis. A retrospective review of 118 available patients with port-wine stains reveals that 98.3 percent responded to photochemotherapy with varying degrees of success after one-time treatment. Results were reported under a simple classification system ranging from ordinary to dilated to posttreatment type. In the ordinary group, the results evaluated as excellent, good, fair, and poor were 37.8, 53.7, 8.5, and 0 percent, respectively, before a second treatment; the treated area was an average of 9.8 (range 7 to 13) cm in diameter. In addition, hypertrophic scars, permanent hyperpigmentation, and hypopigmentation were not seen based on proper parameters. Photochemotherapy offers a potentially efficient and promising choice based on a completely different mechanism from that of selected photothermal therapy with the pulsed-dye laser.
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Affiliation(s)
- X X Lin
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, China
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