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Liu R, Jiao YR, Huang M, Zou NY, He C, Huang M, Chen KX, He WZ, Liu L, Sun YC, Xia ZY, Quarles LD, Yang HL, Wang WS, Xiao ZS, Luo XH, Li CJ. Mechanosensitive protein polycystin-1 promotes periosteal stem/progenitor cells osteochondral differentiation in fracture healing. Theranostics 2024; 14:2544-2559. [PMID: 38646641 PMCID: PMC11024844 DOI: 10.7150/thno.93269] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 03/28/2024] [Indexed: 04/23/2024] Open
Abstract
Background: Mechanical forces are indispensable for bone healing, disruption of which is recognized as a contributing cause to nonunion or delayed union. However, the underlying mechanism of mechanical regulation of fracture healing is elusive. Methods: We used the lineage-tracing mouse model, conditional knockout depletion mouse model, hindlimb unloading model and single-cell RNA sequencing to analyze the crucial roles of mechanosensitive protein polycystin-1 (PC1, Pkd1) promotes periosteal stem/progenitor cells (PSPCs) osteochondral differentiation in fracture healing. Results: Our results showed that cathepsin (Ctsk)-positive PSPCs are fracture-responsive and mechanosensitive and can differentiate into osteoblasts and chondrocytes during fracture repair. We found that polycystin-1 declines markedly in PSPCs with mechanical unloading while increasing in response to mechanical stimulus. Mice with conditional depletion of Pkd1 in Ctsk+ PSPCs show impaired osteochondrogenesis, reduced cortical bone formation, delayed fracture healing, and diminished responsiveness to mechanical unloading. Mechanistically, PC1 facilitates nuclear translocation of transcriptional coactivator TAZ via PC1 C-terminal tail cleavage, enhancing osteochondral differentiation potential of PSPCs. Pharmacological intervention of the PC1-TAZ axis and promotion of TAZ nuclear translocation using Zinc01442821 enhances fracture healing and alleviates delayed union or nonunion induced by mechanical unloading. Conclusion: Our study reveals that Ctsk+ PSPCs within the callus can sense mechanical forces through the PC1-TAZ axis, targeting which represents great therapeutic potential for delayed fracture union or nonunion.
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Affiliation(s)
- Ran Liu
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Yu-Rui Jiao
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Mei Huang
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Nan-Yu Zou
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Chen He
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Min Huang
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Kai-Xuan Chen
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Wen-Zhen He
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Ling Liu
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Yu-Chen Sun
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Zhu-Ying Xia
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - L. Darryl Quarles
- Department of Medicine, University of Tennessee Health Science Center, Memphis, TN, 38163, USA
| | - Hai-Lin Yang
- Department of Orthopaedics, The Second Affiliated Hospital of Fuyang Normal University, Fuyang, Anhui, 236000, China
| | - Wei-Shan Wang
- Department of Orthopaedics, The First Affiliated Hospital of Shihezi University, Shihezi 832061, China
| | - Zhou-Sheng Xiao
- Department of Medicine, University of Tennessee Health Science Center, Memphis, TN, 38163, USA
| | - Xiang-Hang Luo
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
- Key Laboratory of Aging-related Bone and Joint Diseases Prevention and Treatment, Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
| | - Chang-Jun Li
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
- Key Laboratory of Aging-related Bone and Joint Diseases Prevention and Treatment, Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
- Laboratory Animal Center, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
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Feng X, Xiao Y, Guo Q, Peng H, Zhou HY, Wang JP, Xia ZY. Parathyroid hormone alleviates non-alcoholic liver steatosis via activating the hepatic cAMP/PKA/CREB pathway. Front Endocrinol (Lausanne) 2022; 13:899731. [PMID: 36060945 PMCID: PMC9428460 DOI: 10.3389/fendo.2022.899731] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Accepted: 07/25/2022] [Indexed: 11/17/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD), hallmarked by liver steatosis, is becoming a global concern, but effective and safe drugs for NAFLD are still lacking at present. Parathyroid hormone (PTH), the only FDA-approved anabolic treatment for osteoporosis, is important in calcium-phosphate homeostasis. However, little is known about its potential therapeutic effects on other diseases. Here, we report that intermittent administration of PTH ameliorated non-alcoholic liver steatosis in diet-induced obese (DIO) mice and db/db mice, as well as fasting-induced hepatic steatosis. In vitro, PTH inhibits palmitic acid-induced intracellular lipid accumulation in a parathyroid hormone 1 receptor (PTH1R)-dependent manner. Mechanistically, PTH upregulates the expression of genes involved in lipid β-oxidation and suppresses the expression of genes related to lipid uptake and de novo lipogenesis by activating the cAMP/PKA/CREB pathway. Taken together, our current finding proposes a new therapeutic role of PTH on NAFLD.
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Affiliation(s)
- Xu Feng
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, China
| | - Ye Xiao
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, China
| | - Qi Guo
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, China
| | - Hui Peng
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, China
| | - Hai-Yan Zhou
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, China
| | - Jian-Ping Wang
- Department of Endocrinology, The Second Affiliated Hospital of University of South China, Hengyang, China
- *Correspondence: Zhu-Ying Xia, ; Jian-Ping Wang,
| | - Zhu-Ying Xia
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China
- *Correspondence: Zhu-Ying Xia, ; Jian-Ping Wang,
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Chen P, Hu B, Xie LQ, Jiang TJ, Xia ZY, Peng H. Scara3 regulates bone marrow mesenchymal stem cell fate switch between osteoblasts and adipocytes by promoting Foxo1. Cell Prolif 2021; 54:e13095. [PMID: 34254370 PMCID: PMC8349663 DOI: 10.1111/cpr.13095] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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: 04/10/2021] [Revised: 06/25/2021] [Accepted: 06/26/2021] [Indexed: 02/06/2023] Open
Abstract
Objectives Scavenger receptor class A, member 3 (Scara3) was involved in adipogenesis. However, the effect of Scara3 on the switch between osteogenesis and adipogenesis of bone marrow mesenchymal stem cells (BMSCs) remains elusive. Materials and Methods The correlations between SCARA3 with the osteogenic‐related were analysed based on the GTEx database. The effects of Scara3 on osteogenic or adipogenic differentiation of BMSCs were evaluated by qPCR, Western blot (WB) and cell staining. The mechanisms of Scara3 regulating Foxo1 and autophagy were validated by co‐expression analysis, WB and immunofluorescence. In vivo, Scara3 adeno‐associated virus was injected into intra‐bone marrow of the aged mice and ovariectomized (OVX) mice whose phenotypes were confirmed by micro‐CT, calcein double labelling and immunochemistry (HE and OCN staining). Results SCARA3 was positively correlated with osteogenic‐related genes. Scara3 expression gradually decreased during adipogenesis but increased during osteogenesis. Moreover, the deletion of Scara3 favoured adipogenesis over osteogenesis, whereas overexpression of Scara3 significantly enhanced the osteogenesis at the expense of adipogenesis. Mechanistically, Scara3 controlled the cell fate by promoting Foxo1 expression and autophagy flux. In vivo, Scara3 promoted bone formation and reduced bone marrow fat accumulation in OVX mice. In the aged mice, Scara3 overexpression alleviated bone loss as well. Conclusions This study suggested that Scara3 regulated the switch between adipocyte and osteoblast differentiation, which represented a potential therapeutic target for bone loss and osteoporosis.
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Affiliation(s)
- Peng Chen
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, China.,Department of Orthopedic, Xiangya Hospital of Central South University, Changsha, China
| | - Biao Hu
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, China
| | - Ling-Qi Xie
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, China
| | - Tie-Jian Jiang
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, China
| | - Zhu-Ying Xia
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, China
| | - Hui Peng
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, China
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Li YL, Xia ZY, Zheng Z, Sun K, Mo YN. Research Progress on the Determination of Electrical Conductivity in Forensic Science. Fa Yi Xue Za Zhi 2020; 36:360-364. [PMID: 32705850 DOI: 10.12116/j.issn.1004-5619.2020.03.012] [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: 01/29/2019] [Indexed: 11/30/2022]
Abstract
Abstract Electrical conductivity (EC) is an important physical and chemical index in electrochemical analysis. In recent years, with the penetration and reference of transformation medicine and interdisciplinary theory and technology in the forensic field, new applications of EC in the field of forensic science have been developed. This paper reviews three aspects of the application of EC, the determination of biological tissue freshness, postmortem interval estimation and the application in forensic taphonomy, in order to provide reference for relevant scientific research and related practices.
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Affiliation(s)
- Y L Li
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471023, Henan Province, China
| | - Z Y Xia
- Di'an Research Center for Postmortem Imaging & Angiography, Beijing 100192, China
| | - Z Zheng
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471023, Henan Province, China
| | - K Sun
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471023, Henan Province, China
| | - Y N Mo
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471023, Henan Province, China
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Zheng Z, Zhai XD, Xia ZY, Li YL, Zhao LL, Liu HL, Mo YN. Relationship between Electrical Conductivity and Chemical Content of Rat Skeletal Muscle Impregnating Solution and Postmortem Interval. Fa Yi Xue Za Zhi 2019; 35:572-575. [PMID: 31833291 DOI: 10.12116/j.issn.1004-5619.2019.05.011] [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: 05/18/2017] [Indexed: 11/30/2022]
Abstract
Abstract Objective To study the mechanism of change of the electrical conductivity (EC) of rat skeletal muscle impregnating solution that occurs with the change of postmortem interval (PMI). Methods Healthy Sprague-Dawley rats were killed and kept at about 25 ℃. Skeletal muscles were extracted at different PMI--immediate (0 d), 1 d, 2 d, 3 d, 4 d, 5 d, 6 d, and 7 d, then mixed with deionized water to make impregnating solution with a mass concentration of 0.1 g/mL. The solution's EC and nine common chemicals in it, such as potassium ion, calcium ion, and chloride ion, were determined. Results EC increased gradually with the extending of PMI (P=0.024) during the 7 days after the rats' death. The content of uric acid (P=0.032), urea nitrogen (P=0.013) and phosphorus (P=0.022) also increased during the extension. However, the content of magnesium ions decreased with extending of PMI (P=0.047). The correlation between potassium ion, sodium ion, chlorine ion, calcium ion, creatinine and PMI were weak (P>0.05). Conclusion The molecular basis of skeletal muscle EC change in rats after their death is the changes of uric acid, urea nitrogen, inorganic phosphorus and other chemical components. Furthermore, combine use of various indicators can improve the accuracy of the EC method to infer PMI.
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Affiliation(s)
- Z Zheng
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, Henan Province, China
| | - X D Zhai
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, Henan Province, China
| | - Z Y Xia
- Institute of Evidence Law and Forensic Science, China University of Political Science and Law, Beijing 100088, China
| | - Y L Li
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, Henan Province, China
| | - L L Zhao
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, Henan Province, China
| | - H L Liu
- 3 Hospital of Henan University of Science and Technology, Luoyang 471003, Henan Province, China
| | - Y N Mo
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, Henan Province, China
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Duan WR, Liu ZL, Guan J, Xia ZY, Zhao XH, Jian Q, Lan HT, Zhao ZM, Jian FZ, Chen Z. [Reduction of the atlantoaxial dislocation associated with basilar invagination through single-stage posterior approach: using Xuanwu occipital-cervical reduction surgical suite]. Zhonghua Wai Ke Za Zhi 2019; 57:63-68. [PMID: 31510735 DOI: 10.3760/cma.j.issn.0529-5815.2019.10.012] [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: 11/05/2022]
Abstract
Objective: To examine the effect of posterior reduction in atlantoaxial dislocation (AAD) associated with basilar invagination(BI) using Xuanwu occipital-cervical fusion system in single stage. Methods: Thirty-seven AAD accompanied with BI cases treated at Department of Neurosurgery, Xuanwu Hospital, Capital Medical Universiy and the Second Hospital of Hebei Medical University were retrospective analyzed. There were 15 males and 22 females with age of (42.3±12.3)years (range: 18-69 yars). All the cases had congenital osseous abnormalities, such as assimilation of atlas and abnormal cervical fusion. Anterior tissue was released through posterior route followed by cage implantation into facet joint and occipital-cervical fixation with cantilever technique. The clinical results were evaluated using Japanese Orthopedic Association scale(JOA) and the main radiological measurements including anterior atlantodental interval (ADI),the distance of odontoid tip above Chamberlain line,clivus-canal angle (CCA) and the length of syrinx were collected.The preoperative and postoperative JOA score and radiological measurements were compared by paired t-test. Results: The mean JOA score of the patients increased from 10.5 to 14.4 at the one-year follow-up(t=14.3,P=0.00).Complete reduction of AAD and BI was achieved in 34 patients.The mean clivus-canal angle improved from 118.0 degrees preoperative to 143.7 degrees postoperative(t=6.2,P=0.00). Shrinkage of the syrinx was observed 1 week after surgery in 24 patients, and 6 months in 31 patients. Twenty-eight patients achieved bone fusion 6 months after surgery. All the patients achieved bone fusion 12 months after surgery. One-side vertebral artery occlusion was diagnosed in 1 case postoperatively for transient dizziness, and relieved in 2 weeks. Two patients developed moderate neck pain after surgery, and relieved in 1 month. No implant failure, spacer subsidence or infection was observed. Conclusions: The treatment of AAD associated with BI using Xuanwu occipital-cervical fusion system from posterior approach in single stage is effective and safe. Cage implantation intraarticularly and fixation with cantilever technique achieve complete reduction in most cases.
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Affiliation(s)
- W R Duan
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical Universiy, Beijing 100053, China
| | - Z L Liu
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical Universiy, Beijing 100053, China
| | - J Guan
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical Universiy, Beijing 100053, China
| | - Z Y Xia
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical Universiy, Beijing 100053, China
| | - X H Zhao
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical Universiy, Beijing 100053, China
| | - Q Jian
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical Universiy, Beijing 100053, China
| | - H T Lan
- Department of Neurosurgery, the Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - Z M Zhao
- Department of Neurosurgery, the Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - F Z Jian
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical Universiy, Beijing 100053, China
| | - Z Chen
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical Universiy, Beijing 100053, China
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Peng H, Yang M, Guo Q, Su T, Xiao Y, Xia ZY. Dendrobium officinale polysaccharides regulate age-related lineage commitment between osteogenic and adipogenic differentiation. Cell Prolif 2019; 52:e12624. [PMID: 31038249 PMCID: PMC6668967 DOI: 10.1111/cpr.12624] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [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: 03/05/2019] [Revised: 03/26/2019] [Accepted: 03/30/2019] [Indexed: 12/13/2022] Open
Abstract
Objectives Excessive oxidative stress and diminished antioxidant defences could contribute to age‐related tissue damage and various diseases including age‐related osteoporosis. Dendrobium officinale polysaccharides (DOPs), a major ingredient from a traditional Chinese medicine, have a great potential of antioxidative activity. In this study, we explore the role of DOP in age‐related osteoporosis that remains elusive. Materials and methods Oxidative stimulation and DOP were used to treat bone marrow mesenchymal stem cells (BMSCs), whose lineage commitment was measured by adipogenic‐ and osteoblastic‐induced differentiation analysis. The oxidative stress and antioxidant capacity of BMSCs under the treatment of DOP were analysed by the level of MDA, SOD. Related mechanism studies were confirmed by qRT‐PCR, Western blotting and siRNA transfection. DOP was orally administrated in aged mice whose phenotype was confirmed by micro‐CT, immunofluorescence, immunochemistry and calcein double‐labelling analysis. Results Dendrobium officinale polysaccharide treatment markedly increased osteogenic differentiation of BMSCs, while inhibiting adipogenic differentiation. In vitro, DOP could rescue H2O2‐induced switch of BMSCs differentiation fate. However, this effect was abolished in BMSCs when interfered with Nrf2 siRNA. Furthermore, administration of DOP to aged mice significantly increased the bone mass and reduced the marrow adipose tissue (MAT) accompanied with decreased oxidative stress of BMSCs. Conclusions Our study reveals that DOP can attenuate bone loss and MAT accumulation through NRF2 antioxidant signalling, which may represent as potential therapeutic agent for age‐related osteoporosis.
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Affiliation(s)
- Hui Peng
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Mi Yang
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Qi Guo
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Tian Su
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Ye Xiao
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Zhu-Ying Xia
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, China
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Zheng Z, Zhai XD, Xia ZY, Zhao LL, Li YL, Mo YN. Relationship between Early Postmortem Interval and Electrical Conductivity of Rat Liver, Spleen and Kidney after Death in Rats. Fa Yi Xue Za Zhi 2018; 34:492-494. [PMID: 30468051 DOI: 10.12116/j.issn.1004-5619.2018.05.007] [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: 02/11/2017] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To determine the electrical conductivity (EC) of the liver, spleen and kidney of rats at different postmortem intervals (PMIs) within 24 hours for investigating the relationship between EC of different organs and early PMI. METHODS Totally 45 SD rats were sacrificed by cervical dislocation and kept at a constant temperature of 25 ℃. Tissues were taken from the liver, spleen, and kidney of rats at 0, 3, 6, 9, 12, 15, 18, 21 and 24 h. Impregnating solution with a mass concentration 0.1 g/mL was prepared using deionized water. The EC value of impregnating solution with different organs was separately determined. The regression equations of EC and PMI for different organs were established, respectively. The relationship between EC of different organs and early PMI was analysed in deceased rats. RESULTS The relationship between PMI and EC of the liver and spleen was well fitted with the linear equation. The liver showed the best fitting degree followed by the spleen, while the EC of the kidney showed no significant changes within 24 h. There was a good linear relationship between early PMI and the EC of the liver and spleen. CONCLUSIONS A good linear relationship between early PMI and the EC of the liver and spleen can be found in rats after death, which can be used for the early PMI estimation.
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Affiliation(s)
- Z Zheng
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, Henan Province, China
| | - X D Zhai
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, Henan Province, China
| | - Z Y Xia
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, Henan Province, China
| | - L L Zhao
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, Henan Province, China
| | - Y L Li
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, Henan Province, China
| | - Y N Mo
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, Henan Province, China
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Zhao LL, Zhai XD, Zhang Z, Lü Z, Xia ZY, Mo YN. [Molecular Identification of Sarcosaphagous Flies in Luoyang Based on 28S rRNA Gene Sequence]. Fa Yi Xue Za Zhi 2018; 34:114-119. [PMID: 29923373 DOI: 10.3969/j.issn.1004-5619.2018.02.002] [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] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Indexed: 06/08/2023]
Abstract
OBJECTIVES To detect 715 bp sequence of 28S rRNA in sarcosaphagous flies, and to identify their common species for solving the problem of morphological identification, as well as providing technical support for postmortem interval (PMI) estimation. METHODS Twenty-nine common sarcosaphagous flies were collected in Luoyang and classified by morphological characteristics. The DNA was extracted from the fly's legs by Chelex-100 method and then the fragments of 28S rRNA were amplified and sequenced. The results were compared with twenty-eight corresponding fly species of GenBank and EMBL databases. All the sequences were analyzed by MEGA7.0 software, and sequence alignment was performed by the searching in BLAST. The nucleotide composition was analysed, and the intraspecific and interspecific genetic distance and phylogenetic tree were established. RESULTS Twenty-nine sarcosaphagous flies were classified into 6 species of 5 genera, 3 families by morphological characteristics. In the obtained 715 bp sequence of 28S rRNA, the comparison result of online BLAST showed that the similarity was 100%. Five species were well clustered by a phylogenetic tree. Between different groups, the interspecific and intraspecific differences ranged from 0.007 to 0.045 and 0 to 0.001, respectively. CONCLUSIONS The 28S rRNA target gene sequences shows a good identification capability, which can be a new genetic marker for the identification of sarcosaphagous flies.
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Affiliation(s)
- L L Zhao
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, China
| | - X D Zhai
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, China
| | - Z Zhang
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, China
| | - Z Lü
- School of Criminal Investigation, Southwest University of Political Science & Law, Chongqing 400031, China
| | - Z Y Xia
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, China
| | - Y N Mo
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, China
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Liu BB, Xia ZY, Ma JQ, Li P, Lü P, Zhou HM. [Relationship between the Change Rules of Volatile Organic Compounds in Rat Muscle and Postmortem Interval]. Fa Yi Xue Za Zhi 2017; 33:120-124. [PMID: 29231015 DOI: 10.3969/j.issn.1004-5619.2017.02.003] [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] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Indexed: 11/18/2022]
Abstract
OBJECTIVES To explore the relationship between the change rules of volatile organic compounds (VOCs) in rat muscle and postmortem interval (PMI). METHODS A total of 120 healthy rats were divided randomly into 12 groups (10 for each group). After the rats were sacrificed by cervical dislocation, the bodies were kept at (25±1) ℃. Rat muscle samples were separately obtained at 12 PMI points, including 0, 0.5, 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10 d. The VOCs in rat muscles were collected, detected and analyzed by headspace solid-phase microextraction (HS-SPME) coupled to gas chromatography-mass spectrometer (GC-MS). RESULTS In total, 15 species of VOCs were identified, including 9 aromatic compounds, 3 sulfur compounds, 2 aliphatic acids and 1 heterocyclic compound. The species of VOCs increased with PMI: no species were detected within 1 day, 3 species were detected on day 2, 9 on day 3, 11 on day 4, 14 from day 5 to 7, and 15 from day 8 to 10. Total peak area of 15 species of VOCs was significantly correlated to PMI (adjusted R²=0.15-0.96): the regression function was y=-17.05 x²+ 164.36 x-246.36 (adjusted R²=0.96) from day 2 to 5, and y=2.24 x+101.13 (adjusted R²=0.97) from day 6 to 10. CONCLUSIONS The change rules of VOCs in rat muscle are helpful for PMI estimation.
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Affiliation(s)
- B B Liu
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, China
| | - Z Y Xia
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, China
| | - J Q Ma
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, China
| | - P Li
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, China
| | - P Lü
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, China
| | - H M Zhou
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, China
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Xia ZY, Zhai XD, Liu BB, Zheng Z, Zhao LL, Mo YN. [Relationship between Electrical Conductivity and Decomposition Rate of Rat Postmortem Skeletal Muscle]. Fa Yi Xue Za Zhi 2017; 33:17-20. [PMID: 29231002 DOI: 10.3969/j.issn.1004-5619.2017.01.004] [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: 10/08/2015] [Indexed: 11/18/2022]
Abstract
OBJECTIVES To analyze the relationship among electrical conductivity (EC), total volatile basic nitrogen (TVB-N), which is an index of decomposition rate for meat production, and postmortem interval (PMI). To explore the feasibility of EC as an index of cadaveric skeletal muscle decomposition rate and lay the foundation for PMI estimation. METHODS Healthy Sprague-Dawley rats were sacrificed by cervical vertebrae dislocation and kept at 28 ℃. Muscle of rear limbs was removed at different PMI, homogenized in deionized water and then skeletal extraction liquid of mass concentration 0.1 g/mL was prepared. EC and TVB-N of extraction liquid were separately determined. The correlation between EC (x₁) and TVB-N (x₂) was analyzed, and their regression function was established. The relationship between PMI (y) and these two parameters were studied, and their regression functions were separately established. RESULTS The change trends of EC and TVB-N of skeletal extraction liquid at different PMI were almost the same, and there was a linear positive correlation between them. The regression equation was x₂=0.14x₁-164.91(R²=0.982). EC and TVB-N of skeletal muscle changed significantly with PMI, and the regression functions were y=19.38x₁³-370.68x₁²+2 526.03 x₁-717.06(R²=0.994), and y=2.56x₂³-48.39x₂²+330.60x₂-255.04(R²=0.997), respectively. CONCLUSIONS EC and TVB-N of rat postmortem skeletal muscle show similar change trends, which can be used as an index for decomposition rate of cadaveric skeletal muscle and provide a method for further study of late PMI estimation.
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Affiliation(s)
- Z Y Xia
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, China
| | - X D Zhai
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, China
| | - B B Liu
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, China
| | - Z Zheng
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, China
| | - L L Zhao
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, China
| | - Y N Mo
- School of Forensic Medicine, Henan University of Science and Technology, Luoyang 471003, China
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Abstract
The objective of the present study was to investigate the role of γ-aminobutyric acid type A receptor (GABA(A)R) in lipopolysaccharide (LPS)-induced acute lung injury (ALI) in rats. Thirty-two male wistar rats were randomly divided into four groups. Rats in the GABA group were pretreated with LPS and GABA, while those in the bicuculline (BIC) group were pretreated with LPS and bicuculline. We assessed the arterial blood gas, dry/wet ratio, and the level of tumor necrosis factor-α (TNF-α), IL-6, malondialdehyde, and superoxide dismutase 6 h after the immunization. Paraffin sections of samples were detected using the steptavidin-peroxidase method. Protein expression was detected using sodium dodecyl sulfate-polyacrylamide gel electrophoresis and western blotting. PaO2 in the LPS group was significantly lower than that in the control rats. Activation of GABA-mediated signaling by GABA increased the expression of GABA(A)R in airway bronchial and alveolar epithelial cells. Blockade of the GABA(A)R by bicuculline limited the expression of this receptor. The GABA group rats had higher levels of tissue TNF-α and IL-6 than in ALI rats and control rats. The BIC group rats demonstrated an opposite expression level compared to the GABA group rats. Our results suggest that the GABA(A)R could aggravate the inflammatory response syndrome and oxidative stress in the lungs and play an essential role in LPS-induced acute lung injury. It provides a novel method to study the incidence and mortality of ALI during the peroperative period.
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Affiliation(s)
- L Y Zhan
- Department of Anesthesia, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - L Du
- Department of Anesthesia, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Z Y Xia
- Department of Anesthesia, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - W L Li
- Department of Anesthesia, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - B Zhao
- Department of Anesthesia, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
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Li CJ, Cheng P, Liang MK, Chen YS, Lu Q, Wang JY, Xia ZY, Zhou HD, Cao X, Xie H, Liao EY, Luo XH. MicroRNA-188 regulates age-related switch between osteoblast and adipocyte differentiation. J Clin Invest 2015; 125:1509-22. [PMID: 25751060 DOI: 10.1172/jci77716] [Citation(s) in RCA: 380] [Impact Index Per Article: 42.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 01/15/2015] [Indexed: 12/22/2022] Open
Abstract
Bone marrow mesenchymal stem cells (BMSCs) exhibit an age-dependent reduction in osteogenesis that is accompanied by an increased propensity toward adipocyte differentiation. This switch increases adipocyte numbers and decreases the number of osteoblasts, contributing to age-related bone loss. Here, we found that the level of microRNA-188 (miR-188) is markedly higher in BMSCs from aged compared with young mice and humans. Compared with control mice, animals lacking miR-188 showed a substantial reduction of age-associated bone loss and fat accumulation in bone marrow. Conversely, mice with transgenic overexpression of miR-188 in osterix+ osteoprogenitors had greater age-associated bone loss and fat accumulation in bone marrow relative to WT mice. Moreover, using an aptamer delivery system, we found that BMSC-specific overexpression of miR-188 in mice reduced bone formation and increased bone marrow fat accumulation. We identified histone deacetylase 9 (HDAC9) and RPTOR-independent companion of MTOR complex 2 (RICTOR) as the direct targets of miR-188. Notably, BMSC-specific inhibition of miR-188 by intra-bone marrow injection of aptamer-antagomiR-188 increased bone formation and decreased bone marrow fat accumulation in aged mice. Together, our results indicate that miR-188 is a key regulator of the age-related switch between osteogenesis and adipogenesis of BMSCs and may represent a potential therapeutic target for age-related bone loss.
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Liu J, Hou J, Xia ZY, Zeng W, Wang X, Li R, Ke C, Xu J, Lei S, Xia Z. Recombinant PTD-Cu/Zn SOD attenuates hypoxia-reoxygenation injury in cardiomyocytes. Free Radic Res 2013; 47:386-93. [PMID: 23445361 DOI: 10.3109/10715762.2013.780286] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Oxidative stress plays a pivotal role in myocardial ischemia-reperfusion injury. Increasing the protein expression of intracellular Cu/Zn SOD, which is the major endogenous antioxidant enzyme, may attenuate or prevent hypoxia-reoxygenation injury (HRI) in cultured cardiomyocytes. However, ectogenic Cu/Zn-SOD can hardly be transferred into cells to exert biological effects. In this study, we constructed PTD-Cu/Zn SOD plasmid with a kind of translocation structure-Protein transduction domain (PTD) and detected its transmembrane ability and antioxidant effects in H9c2 rat cardiomyocytes subjected to hypoxia/reoxygenation injury (HRI). METHODS We constructed the pET-PTD-Cu/Zn SOD (CDs) prokaryotic expression vectors in plasmid that were inserted into E. coli BL21 to induce the protein expression of PTD-Cu/Zn SOD. H9c2 cardiomyocyte HRI was achieved by exposing cardiomyocytes to 12 h hypoxia followed by 2 h reoxygenation. Protein expression of PTD-Cu/Zn SOD in cardiomyocytes was assayed by Western blot and their enzyme activities were investigated by immunohistochemistry and flow cytometry. RESULTS In cultured cardiomyocytes hypoxia-reoxygenation injury model, exogenous PTD-Cu/Zn SOD could penetrate cell membrane to clear superoxide anion and decrease hydrogen peroxide level in H9c2 cardiomyocytes subjected to HRI. The level of mitochondrial membrane potential was restored to normal, and the cell apoptosis was reduced in cardiomyocytes with PTD-Cu/Zn SOD treatment during HRI. CONCLUSION Recombinant PTD-Cu/Zn SOD could scavenge intracellular-free superoxide anion, protect mitochondria from damages, and attenuate the hypoxia-reoxygenation injury in cultured cardiomyocytes.
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Affiliation(s)
- J Liu
- Department of Anesthesiology, Remin Hospital of Wuhan University, Wuhan, Hubei, PR China
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Xia ZY, Yang H, Qu HQ, Cheng WD, Wang LX. Impact of carotid artery stenting on plasma interleukin-6, tumor necrosis factor-α and C-reactive protein. INT ANGIOL 2012; 31:28-32. [PMID: 22330622] [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: 05/31/2023]
Abstract
AIM This study aimed to investigate the impact of carotid artery stenting (CAS) on plasma levels of interleukin-6 (IL-6), tumor necrosis factor alpha (TNF-α) and C-reactive protein (CRP). METHODS The levels of CRP, IL-6, and TNF-α were measured in 61 patients before CAS, 1 h, 2 weeks, 1 month, 6 months, and 12 months after the stenting. RESULTS The levels of CRP, IL-6 and TNF-α increased immediately after CAS (P<0.05 or <0.01). The levels of CRP, IL-6 and TNF-α in patients receiving two stents for multiple lesions or single diffusive lesions was also high than in patients receiving one stent for a single lesion (P<0.05 or <0.01). The levels of CRP, IL-6 and TNF-α in patients with restenosis (14/61, or 23%) were higher than in those without restenosis (P<0.05 or <0.01). CONCLUSION CAS was associated with a significant increase in plasma CRP, IL-6 and TNF-α. The levels of these inflammatory factors in patients with post-CAS restenosis were higher than in those without restenosis.
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Affiliation(s)
- Z Y Xia
- Department of Neurology, Liaocheng People's Hospital and Liaocheng Clinical School of Taishan Medical University Liaocheng, Shandong Province, PR China
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Hu R, Liu W, Li H, Yang L, Chen C, Xia ZY, Guo LJ, Xie H, Zhou HD, Wu XP, Luo XH. A Runx2/miR-3960/miR-2861 regulatory feedback loop during mouse osteoblast differentiation. J Biol Chem 2011; 286:12328-39. [PMID: 21324897 DOI: 10.1074/jbc.m110.176099] [Citation(s) in RCA: 184] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Our recent study showed that miR-2861 promotes osteoblast differentiation by targeting histone deacetylase 5, resulting in increased runt-related transcription factor 2 (Runx2) protein production. Here we identified another new microRNA (miRNA) (miR-3960) that played a regulatory role in osteoblast differentiation through a regulatory feedback loop with miR-2861. miR-3960 and miR-2861 were found clustered at the same loci. miR-3960 was transcribed during bone morphogenic protein 2 (BMP2)-induced osteogenesis of ST2 stromal cells. Overexpression of miR-3960 promoted BMP2-induced osteoblastogenesis. However, the inhibition of miR-3960 expression attenuated the osteoblastogenesis. Homeobox A2 (Hoxa2), a repressor of Runx2 expression, was confirmed to be a target of miR-3960. Electrophoretic mobility shift assay and chromatin immunoprecipitation experiments confirmed that Runx2 bound to the promoter of the miR-3960/miR-2861 cluster. Furthermore, overexpression of Runx2 induced miR-3960/miR-2861 transcription, and block of Runx2 expression attenuated BMP2-induced miR-3960/miR-2861 transcription. Here we report that miR-3960 and miR-2861, transcribed together from the same miRNA polycistron, both function in osteoblast differentiation through a novel Runx2/miR-3960/miR-2861 regulatory feedback loop. Our findings provide new insights into the roles of miRNAs in osteoblast differentiation.
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Affiliation(s)
- Rong Hu
- Institute of Endocrinology and Metabolism, The Second Xiangya Hospital of Central South University, 139 Middle Renmin Road, Changsha, Hunan 410011, China
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Zheng LM, Liu XL, Xia ZY. [Clinical observation on gastrointestinal protective effect of Composite Salviae injection in patients undergoing cardio-pulmonary bypass heart surgery]. Zhongguo Zhong Xi Yi Jie He Za Zhi 2001; 21:177-9. [PMID: 12577331] [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: 02/28/2023]
Abstract
OBJECTIVE To observe the gastrointestinal protective effect of Composite Salviae Injection (CSI) in patients undergoing cardio-pulmonary bypass (CPB) heart surgery. METHODS Eighteen patients, who were scheduled to cardiac surgery (either atrial or ventrical septal repairing) undergoing CPB were randomized equally into two groups. Before CPB, the CSI group was treated with CSI 0.5 ml/kg by intravenous dripping and the control group was treated with normal saline in equal volume. The intragastric mucosa pH value (pHi) of patients was monitored by tensiometer. RESULTS As compared with the pre-CPB value, pHi lowered significantly during, 1 h and 2 hrs after CPB in the control group (P < 0.05 or P < 0.01), while in the CSI group, pHi lowered significantly only during CPB (P < 0.05), but with insignificant change at 1 h and 2 hrs after CPB. Comparison between the two groups showed that pHi value in the CSI group was higher significantly than that in the control group at all respective monitoring period (P < 0.05). CONCLUSION CSI has gastrointestinal protective effect in patients undergoing CPB cardiosurgery to some extent.
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Affiliation(s)
- L M Zheng
- Shenzhen Municipal Central Hospital, Guangdong 518036
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18
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Gu NF, Tang BH, Xia ZY. [Melatonin in seasonal affective disorder]. Zhonghua Shen Jing Jing Shen Ke Za Zhi 1990; 23:306-8. [PMID: 2282885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Ko GN, Zhang LD, Yan WW, Zhang MD, Buchner D, Xia ZY, Wyatt RJ, Jeste DV. The Shanghai 800: prevalence of tardive dyskinesia in a Chinese psychiatric hospital. Am J Psychiatry 1989; 146:387-9. [PMID: 2563929 DOI: 10.1176/ajp.146.3.387] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The authors found that 73 (8.4%) of 866 patients with chronic schizophrenia in the Shanghai Psychiatric Hospital who had been treated with neuroleptics had tardive dyskinesia. This low prevalence rate is possibly ascribable to the use of relatively low doses of neuroleptics.
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Affiliation(s)
- G N Ko
- Department of Psychiatry and Behavioral Sciences, University of Washington, Seattle
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Zhou JM, Fang QX, Deng KH, Hu CH, Xia ZY. The use of photo-electric automatic exposure device for localisation of intraocular foreign bodies. Yan Ke Xue Bao 1986; 2:263-8. [PMID: 3506888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Gu NF, Yan HQ, Cai GJ, Zhang MD, Xia ZY, Wang WL, Zhang QZ, Wang ZS. Hypothalamic dysfunction related to third ventricular size. J Oslo City Hosp 1986; 36:117-21. [PMID: 3806279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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22
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Song TS, Chen Y, Chen J, Yan HQ, Xia ZY, Cai N, Xia YF. [Effects of some psychotropic drugs on the osmotic stability and membrane expansion of human erythrocyte membrane]. Zhongguo Yao Li Xue Bao 1985; 6:19-24. [PMID: 2859732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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23
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Hu CH, Deng KH, Xia ZY, Zhou JM, Li JW, Huang YY. [Radiation technique for the YD-I photo-electro-controllable positioner for intraocular foreign bodies]. Sichuan Yi Xue Yuan Xue Bao 1985; 16:66-8. [PMID: 4012593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Abstract
Using a highly specific and sensitive radioimmunoassay for dynorphin(1-8) (D 1-8), and a singly blind test design, we measured D(1-8) immunoreactivity (ir D 1-8) in CSF of 35 first break cases of acute schizophrenic patients. All patients were free of psychotropic medication for at least one week before the study. Another 31 neurological patients suffered from cervical arthrosis, tumor, myelopathy etc. were studied as controls. The ir D(1-8) in CSF of schizophrenic patients were significantly lower than that of controls (91.8 +/- 5.6, means +/- S.E.M., and 131.9 +/- 6.8 fmol/ml CSF respectively, p less than 0.001).
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Xia ZY. [Clinical study on schizophrenics with negative variations]. Zhonghua Shen Jing Jing Shen Ke Za Zhi 1983; 16:321-324. [PMID: 6678205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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Xia ZY, Zhang MY. [The development and present state of modern psychiatry in China (author's transl)]. Zhonghua Shen Jing Jing Shen Ke Za Zhi 1981; 14:170-3. [PMID: 7333176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Xia ZY, Zhang MY. History and present status of modern psychiatry in China. Chin Med J (Engl) 1981; 94:277-82. [PMID: 6788460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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Xia ZY, Yan HQ, Wang CH. Mental health work in Shanghai. Chin Med J (Engl) 1980; 93:127-9. [PMID: 6768514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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