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Chen Q, Liu Y, Bi L, Jin L, Peng R. Understanding the mechanistic roles of microplastics combined with heavy metals in regulating ferroptosis: Adding new paradigms regarding the links with diseases. Environ Res 2024; 242:117732. [PMID: 37996004 DOI: 10.1016/j.envres.2023.117732] [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] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 11/15/2023] [Accepted: 11/16/2023] [Indexed: 11/25/2023]
Abstract
As a new type of pollutant, microplastics (MPs) commonly exist in today's ecosystems, causing damage to the ecological environment and the health of biological organisms, including human beings. MPs can function as carriers of heavy metals (HMs) to aggravate the enrichment of HMs in important organs of organisms, posing a great threat to health. Ferroptosis, a novel process for the regulation of nonapoptotic cell death, has been shown to be closely related to the occurrence and processes of MPs and HMs in diseases. In recent years, some HMs, such as cadmium (Cd), iron (Fe), arsenic (As) and copper (Cu), have been proven to induce ferroptosis. MPs can function as carriers of HMs to aggravate damage to the body. This damage involves oxidative stress, mitochondrial dysfunction, lipid peroxidation (LPO), inflammation, endoplasmic reticulum stress (ERS) and so on. Therefore, ferroptosis has great potential as a therapeutic target for diseases induced by MPs combined with HMs. This paper systematically reviews the potential effects and regulatory mechanisms of MPs and HMs in the process of ferroptosis, focusing on the mitochondrial damage, Fe accumulation, LPO, ERS and inflammation caused by MPs and HMs that affect the regulatory mechanism of ferroptosis, providing new insights for research on regulating drugs and for the development of ferroptosis-targeting therapy for Alzheimer's disease, Parkinson's disease, cancer and cardiovascular disease.
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Affiliation(s)
- Qianqian Chen
- Institute of Life Sciences & Biomedicine Collaborative Innovation Center of Zhejiang Province, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
| | - Yinai Liu
- Institute of Life Sciences & Biomedicine Collaborative Innovation Center of Zhejiang Province, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
| | - Liuliu Bi
- Institute of Life Sciences & Biomedicine Collaborative Innovation Center of Zhejiang Province, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
| | - Libo Jin
- Institute of Life Sciences & Biomedicine Collaborative Innovation Center of Zhejiang Province, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China.
| | - Renyi Peng
- Institute of Life Sciences & Biomedicine Collaborative Innovation Center of Zhejiang Province, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China.
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Chen Q, Cao Y, Li H, Liu H, Liu Y, Bi L, Zhao H, Jin L, Peng R. Sodium nitroprusside alleviates nanoplastics-induced developmental toxicity by suppressing apoptosis, ferroptosis and inflammation. J Environ Manage 2023; 345:118702. [PMID: 37536135 DOI: 10.1016/j.jenvman.2023.118702] [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] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 07/12/2023] [Accepted: 07/26/2023] [Indexed: 08/05/2023]
Abstract
The health damage caused by nanoplastics (NPs) pollution has become one of the global scientific problems to be solved urgently. However, the toxicological mechanism of NPs is complex, and the research progress of anti-toxicity is limited. Thus, it has potential application value to explore or develop drugs that can effectively alleviate or remove NPs with biological toxicity. In this research, 8 μM sodium nitroprusside (SNP) solution was used to treat zebrafish larvae with 20 mg/L NPs for up to 12 days, and the results showed that SNP treatments were effective in alleviating NPs-caused developmental toxicity in zebrafish larvae. Further examination of its signaling pathway revealed that NPs-induced oxidative stress was mitigated by activating the NO-sGC-cGMP signaling pathway and reduced most of the reactive oxygen species (ROS). Subsequently, we detected the key substances and the key enzymes involved in apoptosis and ferroptosis, and found that oxidative stress-induced mitochondria-dependent apoptosis and lipid peroxidation-caused ferroptosis were alleviated. Finally, observed the accumulation of NPs and ROS in the liver of zebrafish larvae, which is the target organ of immunotoxicity, and we found that SNP could alleviate NPs-caused inflammation by analyzing the fluorescence intensity of neutrophils and macrophages in transgenic zebrafish and detecting the expression of key immune genes. In conclusion, this research has shown for the first time that SNP treatment can significantly inhibit NPs-induced developmental toxicity, resulting from oxidative stress-induced apoptosis, ferroptosis and inflammation in zebrafish larvae.
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Affiliation(s)
- Qianqian Chen
- Institute of Life Sciences & Biomedicine Collaborative Innovation Center of Zhejiang Province, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
| | - Yu Cao
- Institute of Life Sciences & Biomedicine Collaborative Innovation Center of Zhejiang Province, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
| | - Huiqi Li
- Institute of Life Sciences & Biomedicine Collaborative Innovation Center of Zhejiang Province, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
| | - Huanpeng Liu
- Institute of Life Sciences & Biomedicine Collaborative Innovation Center of Zhejiang Province, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
| | - Yinai Liu
- Institute of Life Sciences & Biomedicine Collaborative Innovation Center of Zhejiang Province, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
| | - Liuliu Bi
- Institute of Life Sciences & Biomedicine Collaborative Innovation Center of Zhejiang Province, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
| | - Haiyang Zhao
- Institute of Life Sciences & Biomedicine Collaborative Innovation Center of Zhejiang Province, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
| | - Libo Jin
- Institute of Life Sciences & Biomedicine Collaborative Innovation Center of Zhejiang Province, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China.
| | - Renyi Peng
- Institute of Life Sciences & Biomedicine Collaborative Innovation Center of Zhejiang Province, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China.
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Liu Y, Chen Q, Li Y, Bi L, Jin L, Peng R. Toxic Effects of Cadmium on Fish. Toxics 2022; 10:622. [PMID: 36287901 PMCID: PMC9608472 DOI: 10.3390/toxics10100622] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/06/2022] [Accepted: 10/17/2022] [Indexed: 06/16/2023]
Abstract
Large amounts of enriched cadmium (Cd) in the environment seriously threatens the healthy and sustainable development of the aquaculture industry and greatly restricts the development of the food processing industry. Studying the distribution and toxic effects of Cd in fish, as well as the possible toxic effects of Cd on the human body, is very significant. A large number of studies have shown that the accumulation and distribution of Cd in fish are biologically specific, cause tissue differences, and seriously damage the integrity of tissue structure and function, the antioxidant defense system, the reproductive regulation system, and the immune system. The physiological, biochemical, enzyme, molecular, and gene expression levels change with different concentrations and times of Cd exposure, and these changes are closely related to the target sites of Cd action and tissues in fish. Therefore, the toxic effects of Cd on fish occur with multiple tissues, systems, and levels.
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Liu Y, Chen Q, Li Y, Bi L, He Z, Shao C, Jin L, Peng R, Zhang X. Advances in FGFs for diabetes care applications. Life Sci 2022; 310:121015. [PMID: 36179818 DOI: 10.1016/j.lfs.2022.121015] [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: 07/26/2022] [Revised: 09/24/2022] [Accepted: 09/26/2022] [Indexed: 11/26/2022]
Abstract
BACKGROUND Diabetes mellitus (DM) is an endocrine and metabolic disease caused by a variety of pathogenic factors, including genetic factors, environmental factors and behavior. In recent decades, the number of cases and the prevalence of diabetes have steadily increased, and it has become one of the most threatening diseases to human health in the world. Currently, insulin is the most effective and direct way to control hyperglycemia for diabetes treatment at a low cost. However, hypoglycemia is often a common complication of insulin treatment. Moreover, with the extension of treatment time, insulin resistance, considered the typical adverse symptom, can appear. Therefore, it is urgent to develop new targets and more effective and safer drugs for diabetes treatment to avoid adverse reactions and the insulin tolerance of traditional hypoglycemic drugs. SCOPE OF REVIEW In recent years, it has been found that some fibroblast growth factors (FGFs), including FGF1, FGF19 and FGF21, can safely and effectively reduce hyperglycemia and have the potential to be developed as new drugs for the treatment of diabetes. FGF23 is also closely related to diabetes and its complications, which provides a new approach for regulating blood glucose and solving the problem of insulin tolerance. MAJOR CONCLUSIONS This article reviews the research progress on the physiology and pharmacology of fibroblast growth factor in the treatment of diabetes. We focus on the application of FGFs in diabetes care and prevention.
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Affiliation(s)
- Yinai Liu
- Institute of Life Sciences & Biomedicine Collaborative Innovation Center of Zhejiang Province, College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Qianqian Chen
- Institute of Life Sciences & Biomedicine Collaborative Innovation Center of Zhejiang Province, College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Yaoqi Li
- Institute of Life Sciences & Biomedicine Collaborative Innovation Center of Zhejiang Province, College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Liuliu Bi
- Institute of Life Sciences & Biomedicine Collaborative Innovation Center of Zhejiang Province, College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Zhiying He
- Department of Endocrinology and Metabolism, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, China
| | - Chuxiao Shao
- Department of Hepatopancreatobiliary Surgery, Lishui Central Hospital, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui Hospital of Zhejiang University, Lishui 323000, China
| | - Libo Jin
- Institute of Life Sciences & Biomedicine Collaborative Innovation Center of Zhejiang Province, College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China.
| | - Renyi Peng
- Institute of Life Sciences & Biomedicine Collaborative Innovation Center of Zhejiang Province, College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China.
| | - Xingxing Zhang
- Department of Endocrinology and Metabolism, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, China.
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Liu Y, Chen Q, Li Y, Bi L, Lin S, Ji H, Sun D, Jin L, Peng R. Hydrogen sulfide-induced oxidative stress mediated apoptosis via mitochondria pathway in embryo-larval stages of zebrafish. Ecotoxicol Environ Saf 2022; 239:113666. [PMID: 35605332 DOI: 10.1016/j.ecoenv.2022.113666] [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] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 05/10/2022] [Accepted: 05/16/2022] [Indexed: 06/15/2023]
Abstract
Hydrogen sulfide (H2S), a highly toxic gas, has become a polluting gas that cannot be ignored, while H2S exposure results in acute or chronic poisoning or even death in humans or animals and plants, but the relevant mechanisms remain poorly understood. In this study, 9-day-old zebrafish larvae were exposed continuously to culture medium containing 30 μM survival rate was counted on H2S, and our results indicated that H2S exposure increased intracellular ROS, Ca2+, NO and MDA contents and decreased SOD activity, meaning that H2S caused oxidative stress in embryo-larval stages of zebrafish. Furthermore, we found that transgenic zebrafish (cms Tg/+ AB) displayed a lower fluorescence intensity, and cytochrome c oxidase (COX) activity and JC-1 monomer fluorescence ratio increased under H2S treatment conditions. These findings indicated that H2S caused mitochondrial dysfunction. Moreover, in this experiment, after H2S treatment, the increase of apoptotic cells, activity of caspase 3 and transcription of typical apoptosis-associated genes including BCL2 associated agonist of cell death (Bad), and BCL2 associated X apoptosis (Baxa) and so on were found, which suggested that H2S caused apoptosis in zebrafish larvae. Therefore, our data meant that H2S-traggered oxidative stress mediate mitochondrial dysfunction, thus triggering apoptosis. In conclusion, oxidative stress triggered H2S-induced apoptosis via mitochondria pathway in embryo-larval stages of zebrafish.
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Affiliation(s)
- Yinai Liu
- Biomedicine Collaborative Innovation Center of Zhejiang province & Institute of Life Sciences, College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Qianqian Chen
- Biomedicine Collaborative Innovation Center of Zhejiang province & Institute of Life Sciences, College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Yaoqi Li
- Biomedicine Collaborative Innovation Center of Zhejiang province & Institute of Life Sciences, College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Liuliu Bi
- Biomedicine Collaborative Innovation Center of Zhejiang province & Institute of Life Sciences, College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Sue Lin
- Biomedicine Collaborative Innovation Center of Zhejiang province & Institute of Life Sciences, College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Hao Ji
- Biomedicine Collaborative Innovation Center of Zhejiang province & Institute of Life Sciences, College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Da Sun
- Biomedicine Collaborative Innovation Center of Zhejiang province & Institute of Life Sciences, College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Libo Jin
- Biomedicine Collaborative Innovation Center of Zhejiang province & Institute of Life Sciences, College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China.
| | - Renyi Peng
- Biomedicine Collaborative Innovation Center of Zhejiang province & Institute of Life Sciences, College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China.
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Zheng H, Shi Y, Bi L, Zhang Z, Zhou Z, Shao C, Cui D, Cheng X, Tang R, Pan H, Wu Z, Fu B. Dual Functions of MDP Monomer with De- and Remineralizing Ability. J Dent Res 2022; 101:1172-1180. [PMID: 35450492 DOI: 10.1177/00220345221088214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Methacryloyloxydecyl dihydrogen phosphate (MDP) has been speculated to induce mineralization, but there has been no convincing evidence of its ability to induce intrafibrillar mineralization. Polymers play a critical role in biomimetic mineralization as stabilizers/inducers of amorphous precursors. Hence, MDP-induced biomimetic mineralization without polymer additives has not been fully verified or elucidated. By combining 3-dimensional stochastic optical reconstruction microscopy, surface zeta potentials, contact angle measurements, inductively coupled plasma-optical emission spectroscopy, transmission electron microscopy, atomic force microscopy, and Fourier transform infrared spectroscopy with circular dichroism, we show that amphiphilic MDP can not only demineralize dentin by releasing protons as an acidic functional monomer but also infiltrate collagen fibrils (including dentin collagen), unwind the triple helical structure by breaking hydrogen bonds, and finally immobilize within collagen. MDP-bound collagen functions as a huge collagenous phosphoprotein (HCPP), in contrast to chemical phosphorylation modifications. HCPP can induce biomimetic mineralization itself without polymer additives by alternatively attracting calcium and phosphate through electrostatic attraction. Therefore, we herein propose the dual functions of amphiphilic MDP monomer with de- and remineralizing ability. MDP in the free state can demineralize dentin substrates by releasing protons, whereas MDP in the collagen-bound state as HCPP can induce intrafibrillar mineralization. The dual functions of MDP monomer with de- and remineralization properties might create a new epoch in adhesive dentistry and preventive dentistry.
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Affiliation(s)
- H Zheng
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Dental Biomaterials and Devices for Zhejiang Provincial Engineering Research Center, Hangzhou, Zhejiang Province, China
| | - Y Shi
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Dental Biomaterials and Devices for Zhejiang Provincial Engineering Research Center, Hangzhou, Zhejiang Province, China
| | - L Bi
- The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, China
| | - Z Zhang
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Dental Biomaterials and Devices for Zhejiang Provincial Engineering Research Center, Hangzhou, Zhejiang Province, China
| | - Z Zhou
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Dental Biomaterials and Devices for Zhejiang Provincial Engineering Research Center, Hangzhou, Zhejiang Province, China
| | - C Shao
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA, USA
| | - D Cui
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University (Nanjing Tech), Nanjing, Jiangsu Province, China
| | - X Cheng
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University (Nanjing Tech), Nanjing, Jiangsu Province, China
| | - R Tang
- Center for Biomaterials and Biopathways, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang Province, China
| | - H Pan
- Qiushi Academy for Advanced Studies, Zhejiang University, Hangzhou, Zhejiang Province, China
| | - Z Wu
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Dental Biomaterials and Devices for Zhejiang Provincial Engineering Research Center, Hangzhou, Zhejiang Province, China
| | - B Fu
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Dental Biomaterials and Devices for Zhejiang Provincial Engineering Research Center, Hangzhou, Zhejiang Province, China
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Du F, Xu J, Li X, Li Z, Li X, Zuo X, Bi L, Zhao D, Zhang M, Wu H, He D, Wu Z, Li Z, Li Y, Xu J, Tao Y, Zhao J, Chen J, Zhang H, Li J, Jiang L, Xiao Z, Chen Z, Yin G, Gong L, Wang G, Dong L, Xiao W, Bao C. POS0664 A MULTICENTER RANDOMIZED STUDY IN RHEUMATOID ARTHRITIS TO COMPARE IGURATIMOD, METHOTREXATE, OR COMBINATION: 52 WEEK EFFICACY AND SAFETY RESULTS OF THE SMILE TRIAL. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.1486] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Iguratimod (IGU) has demonstrated efficacy and safety for active rheumatoid arthritis (RA) patients in double-blind clinical trials in China and Japan as a new disease-modifying anti-rheumatic drug (DMARD). There are no studies evaluating the radiographic progression of structural joint damage of IGU for the treatment of RA using the mTSS as the primary endpoint.Objectives:Our study was to evaluate the efficacy and safety of IGU monotherapy and IGU combined methotrexate (MTX) compared with MTX monotherapy, including the inhibitory effects of joint destruction.Methods:This randomized, double-blind, parallel-controlled, multicenter study in patients with active RA who have not previously used MTX and biological DMARDs (bDMARDs) (ClinicalTrials.gov Identifier NCT01548001) was carried out in China. Patients were randomized 1:1:1 to receive IGU 25 mg twice a day (bid), MTX 10mg once a week(qw) for the first 4 weeks and 15 mg once a week(qw) for week 5 to 52, or IGU combined MTX (IGU+MTX) for 52 weeks. The primary endpoints were to assess and compare American College of Rheumatology 20% (ACR20) response and the change of modified total Sharp scoring (mTSS) score over 52 weeks (Intention-to-treat, ITT analysis). The non-inferiority test was used to analyze the difference of ACR20 response at 52 weeks between the IGU monotherapy and the MTX monotherapy arms, and the non-inferiority limit value was 10%. The difference test was used for the comparison between the IGU+MTX and MTX monotherapy arms. Two-way ANOVA was used to analyze the difference of the changes of mTSS score of each arm compared with baseline value (0 week).Results:A total of 895 patients were randomized to IGU 25mg bid (n =297), MTX 10-15mg qw(n=293), and IGU+MTX (n=305). Baseline characteristics were comparable between the arms (Table 1).Table 1.Demographic and Other Baseline Characteristics (SAS)IGUMTXIGU+MTXNumber of Subjects297293305Age, mean (SD) years46.87(10.67)47.63(10.70)48.37(10.69)Female/male, %77.44/22.5679.18/20.8278.03/21.97Duration of RA, mean(SD) years11.67±7.1611.60±7.9811.67±7.27CRP, mean(SD) mg/L222.32±35.4720.67±26.6119.74±31.38Tender joint count, mean (SD)14.59±9.1614.83±9.3014.93±9.88Swollen joint count, mean (SD)9.81±6.639.73±7.209.51±6.22DAS28-CRP, mean (SD)5.084±0.9945.102±0.9795.103±0.956HAQ score, mean (SD)15.82±11.2515.24±10.9316.06±10.92SAS: Safety Analysis Set; CRP: C-reactive protein;DAS28: disease activity score; HAQ: Health Assessment QuestionnaireThe study met its primary endpoints. More concretely, IGU monotherapy and IGU+MTX were found to be superior to MTX at week 52 with a higher ACR20 response of 77.44%(230/297, P=0.0019) and 77.05%(235/305, P=0.0028) versus 65.87%(193/293) (fig 1). As shown in fig 1, the structural remission (ΔmTSS≤0.5) was statistically significant for IGU monotherapy (57.4%, P=0.0308) but not for IGU+MTX arm (55%) versus MTX monotherapy (47.8%).Overall incidence of the adverse events (AEs) leading to study discontinuation were reported in 13.8% (41/297) in IGU monotherapy arm, 11.26% (33/293) in MTX monotherapy arm and 11.51% (35/305) patients in IGU+MTX arm. The incidence of adverse drug reactions (ADR) leading to study discontinuation were 11.45% (34/297), 8.53% (25/293) and 9.21% (28/305), respectively. There was no one death and no significant difference in all the safety indicators among the three arms.Conclusion:Iguratimod alone or in combination with MTX demonstrated superior efficacy with acceptable safety compared to MTX for patients with active RA who have not previously used MTX bDMARDs.Disclosure of Interests:None declared
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Abstract
OBJECTIVE To explore the effect of dexmedetomidine (DEX) on sepsis-induced liver injury in rats and the mechanism of action, providing certain references for the prevention and treatment of sepsis-induced liver injury in clinical practice. MATERIALS AND METHODS A total of 60 male Sprague Dawley (SD) rats were randomly divided into 3 groups, namely sham operation group (Sham group, n=20), sepsis-induced liver injury group [lipopolysaccharides (LPS) group, n=20], and sepsis-induced liver injury + DEX group (LPS + DEX group, n=20) using a random number table. Rat models of sepsis-induced liver injury were established by intraperitoneal injection of LPS (10 mg/kg), and at the same time, DEX was intragastrically injected at a dose of 50 μg/kg. After 24 h, the survival analysis curves of each group of rats were plotted. Meanwhile, the levels of liver function indexes and oxidative stress markers were measured at 12 h in each group of rats. Hematoxylin-eosin (H&E) staining assay was carried out to detect the morphological changes of rat liver cells in each group. Terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate-biotin nick end-labeling (TUNEL) staining assay was performed to detect the apoptosis level in rat liver tissues in each group. In addition, the expression level of Caspase 3 in three groups of rats was measured through immunohistochemical staining assay. Lastly, the effect of DEX on the protein expression of extracellular signal-regulated kinases 1/2 (ERK1/2) in liver tissues was detected via Western blotting. RESULTS DEX significantly improved liver dysfunction induced by LPS and raised the 24 h-survival rates of rats (p<0.05). Besides, H&E staining results showed that DEX clearly relieved the pathological damage of rat liver cells caused by LPS. In comparison with LPS group, LPS + DEX group displayed more neatly arranged liver cells, less degradation and necrosis, and evidently attenuated cellular edema. Immunohistochemistry results revealed that DEX significantly reversed the increase in Caspase 3 expression resulting from LPS. The results of the TUNEL staining assay showed that DEX clearly inhibited the apoptosis of rat liver cells induced by LPS. The results of Western blotting revealed that DEX notably reversed the decrease of phosphorylated ERK1/2 (p-ERK1/2) in rat liver tissues compared with LPS group. CONCLUSIONS DEX is able to markedly relieve LPS-induced liver injury in rats and the underlying mechanism may be related to the activation of the ERK1/2 signaling pathway.
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Affiliation(s)
- X-K Li
- Department of Anesthesiology, Affiliated Jining No. 1 People's Hospital of Jining Medical University, Jining Medical University, Jining, China.
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Zheng B, Zhang X, Wang X, Ge L, Wei M, Bi L, Deng X, Wang Q, Li J, Wang Z. A comparison of open, laparoscopic and robotic total mesorectal excision: trial sequential analysis and network meta-analysis. Colorectal Dis 2020; 22:382-391. [PMID: 31600858 DOI: 10.1111/codi.14872] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Accepted: 09/06/2019] [Indexed: 02/06/2023]
Abstract
AIM Total mesorectal excision (TME) for rectal cancer can be achieved by employing open (OpTME), laparoscopic (LaTME) and robotic (RoTME) approaches but which of these has the best outcome? The aim of present study is to identify the most effective technique for rectal cancer by comparing all outcomes. METHODS Randomized controlled trials (RCTs) which compared at least two TME strategies were identified by literature search of electronic databases of articles published to June 2018. Network meta-analysis with trial sequential analysis was performed using a frequentist approach with random-effects meta-analysis. Data collection and analysis We conducted a systematic search of PubMed, EmBase, the Cochrane Library, CNKI, and Web of Science. Titles and abstracts of the retrieved publications were independently and blindly assessed by two authors. RESULTS Twenty-two RCTs with 4882 rectal cancer patients were included in this analysis. The trial sequential analysis demonstrated that the cumulative Z-curve crossed either the traditional boundary or the trial sequential monitoring boundaries, suggesting that OpTME resulted in a more complete TME specimen than LaTME (relative risk 1.05, 95% confidence interval 1.01-1.08). Network meta-analysis showed there was no significant difference in the other comparisons. Based on the P score of completeness of the TME specimen and circumferential resection margin positivity, the best technique was OpTME, followed by RoTME and then LaTME. However, this order was reversed when complications and mortality were considered. RoTME led to better lymph node harvest. CONCLUSIONS Although OpTME may give better pathological specimens, minimally invasive techniques may have advantages when considering lymph node harvest, complications and mortality. More RCTs are needed to determine which technique actually gives the best chance of survival.
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Affiliation(s)
- B Zheng
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - X Zhang
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - X Wang
- Department of Gastroenterology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - L Ge
- Evidence-Based Medicine Center, Lanzhou University, Lanzhou, China
| | - M Wei
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - L Bi
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - X Deng
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Q Wang
- Digestive Disease Hospital, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - J Li
- National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Z Wang
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, China
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10
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Zhao F, Bi L, Chen MC, Wu YL, Sun YH. The prevalence and influencing factors for child neglect in a rural area of Anhui province: a 2-year follow-up study. Public Health 2018; 155:110-118. [DOI: 10.1016/j.puhe.2017.11.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 08/28/2017] [Accepted: 11/26/2017] [Indexed: 11/25/2022]
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11
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Wang G, Bi L, Li X, Li Z, Zhao D, Chen J, He D, Wang CN, Dueñas H, Skljarevski V, Yue L. Efficacy and safety of duloxetine in Chinese patients with chronic pain due to osteoarthritis: a randomized, double-blind, placebo-controlled study. Osteoarthritis Cartilage 2017; 25:832-838. [PMID: 28043937 DOI: 10.1016/j.joca.2016.12.025] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 12/15/2016] [Accepted: 12/20/2016] [Indexed: 02/02/2023]
Abstract
OBJECTIVE We assessed the efficacy and safety of duloxetine (60 mg, once daily), compared with placebo, during a 13-week treatment period in Chinese patients with chronic pain due to osteoarthritis (OA). DESIGN Patients were at least 40 years old (male or female) who met American College of Rheumatology clinical and radiographic criteria for the diagnosis of OA of the knee or hip. The primary efficacy measure in this phase 3, randomized, double-blind, placebo-controlled clinical trial was assessment of pain severity by the Brief Pain Inventory (BPI) 24-h Average Pain rating. The clinical trial was conducted at 17 study centers. Statistical approaches included mixed-effects model repeated measures and analysis of covariance. A Fisher exact test was applied to categorical variables. RESULTS Of 407 patients randomized (duloxetine: N = 205; placebo: N = 202), 166 (81.0%) patients from the duloxetine group and 176 (87.1%) patients from the placebo group completed the 13-week treatment phase. The majority (76.4%) of patients was female; mean age was 60.5 years. Duloxetine-treated patients reported significant pain reduction, compared with placebo treatment, on the BPI 24-h Average Pain rating (least-squares mean (LS Mean) change from baseline to endpoint [95% confidence interval (CI)], duloxetine: -2.23; placebo: -1.73; difference = -0.50 [-0.80, -0.20]; P = 0.001). The incidence of discontinuations due to adverse events was 9.0% in duloxetine-treated patients and 4.5% in placebo-treated patients (P = 0.109). CONCLUSIONS This study demonstrated the efficacy of duloxetine in Chinese patients with chronic pain due to OA. The safety profile of duloxetine observed in this study was consistent with that in previous duloxetine trials. This trial is registered with ClinicalTrials.gov (NCT01931475).
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Affiliation(s)
- G Wang
- Rheumatology Department, China-Japan Friendship Hospital, Beijing, PR China.
| | - L Bi
- Rheumatology Department, China-Japan Union Hospital of Jilin University, Changchun, PR China.
| | - X Li
- Rheumatology Department, Anhui Provincial Hospital, Hefei, PR China.
| | - Z Li
- Rheumatology Department, Affiliated Hospital of Bengbu Medical College, Bengbu, PR China.
| | - D Zhao
- Rheumatology Department, Shanghai Changhai Hospital, The 2nd Military Medical University, Shanghai, PR China.
| | - J Chen
- Rheumatology Department, The Second Xiangya Hospital of Central South University, Changsha, PR China.
| | - D He
- Rheumatology Department, Shanghai Guanghua Hospital, Shanghai, PR China.
| | - C-N Wang
- Asian-Pacific Statistical Sciences, Lilly Suzhou Pharmaceutical Co. Ltd., Shanghai Branch, Shanghai, PR China.
| | - H Dueñas
- EMBU Regional Medical Affairs, Eli Lilly de Mexico, Mexico City, Mexico.
| | - V Skljarevski
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, USA.
| | - L Yue
- Medical Department, Lilly Suzhou Pharmaceutical Co. Ltd., Shanghai Branch, Shanghai, PR China.
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12
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Bi J, Koivisto L, Owen G, Huang P, Wang Z, Shen Y, Bi L, Rokka A, Haapasalo M, Heino J, Häkkinen L, Larjava H. Epithelial Microvesicles Promote an Inflammatory Phenotype in Fibroblasts. J Dent Res 2016; 95:680-8. [DOI: 10.1177/0022034516633172] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Microvesicles (MVs) are extracellular vesicles secreted by various cell types that are involved in intercellular communication. We hypothesized that in human periodontal disease, the pocket epithelium releases MVs, which then modulate gene expression in the underlying fibroblasts to control periodontal inflammation. MVs were isolated from culture medium of gingival epithelial cells (GECs) treated with oral bacterial biofilm extract or left untreated. Biofilm treatment significantly increased MV release from the GECs. Mass spectrometry of GEC-MVs identified a total of 2,173 proteins, of which about 80% were detected in MVs from both control and biofilm-treated GECs. Among 80 signature genes of human gingival fibroblasts, 20 were significantly regulated ( P < 0.05) by MVs from control and biofilm-treated GECs in a similar manner. Matrix metalloproteinase 1 and 3 and interleukin 6 and 8 showed the strongest regulation at the mRNA and protein levels. Several cellular signaling pathways were activated by GEC-MVs in human gingival fibroblasts, including Smad and mitogen-activated protein kinase–associated pathways ERK1/2, JNK, and p38. However, ERK1/2 signaling dominated in the MV-induced gene expression changes. The results demonstrate that GEC-MVs have a strong regulatory effect on the expression of fibroblast genes associated with inflammation and matrix degradation and that bacterial biofilm stimulates the generation of GEC-MVs. This suggests that bacterial biofilms can contribute to the initiation and progression of periodontal disease by promoting a tissue-destructive phenotype in gingival fibroblasts via the enhanced secretion of epithelial MVs.
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Affiliation(s)
- J. Bi
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, The University of British Columbia, Vancouver, Canada
- Department of Stomatology, The Fourth Affiliated Hospital, Harbin Medical University, Harbin, China
| | - L. Koivisto
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, The University of British Columbia, Vancouver, Canada
| | - G. Owen
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, The University of British Columbia, Vancouver, Canada
| | - P. Huang
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, The University of British Columbia, Vancouver, Canada
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Z. Wang
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, The University of British Columbia, Vancouver, Canada
| | - Y. Shen
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, The University of British Columbia, Vancouver, Canada
| | - L. Bi
- Department of Stomatology, The Fourth Affiliated Hospital, Harbin Medical University, Harbin, China
| | - A. Rokka
- Turku Centre for Biotechnology, University of Turku and Åbo Akademi University, Turku, Finland
| | - M. Haapasalo
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, The University of British Columbia, Vancouver, Canada
| | - J. Heino
- Department of Biochemistry, University of Turku, Turku, Finland
| | - L. Häkkinen
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, The University of British Columbia, Vancouver, Canada
| | - H.S. Larjava
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, The University of British Columbia, Vancouver, Canada
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13
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Zhao F, Bi L, Wang W, Wu X, Li Y, Gong F, Lu S, Feng F, Qian Z, Hu C, Wu Y, Sun Y. Mutations of glucocerebrosidase gene and susceptibility to Parkinson's disease: An updated meta-analysis in a European population. Neuroscience 2016; 320:239-46. [PMID: 26868973 DOI: 10.1016/j.neuroscience.2016.02.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [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: 08/20/2015] [Revised: 01/30/2016] [Accepted: 02/02/2016] [Indexed: 11/24/2022]
Abstract
This meta-analysis aims to investigate the association between mutations of glucocerebrosidase (GBA) gene and susceptibility to Parkinson's disease (PD) in a European population. Several electronic databases were extensively searched. Odds ratios (ORs) and 95% confidence intervals (CIs) were calculated to assess the association. In total, fourteen published papers screening L444P, N370S and other GBA variants were identified. The GBA mutations were significantly associated with PD in the European population. Subgroup analysis stratified by the age of onset (AAO) revealed that the association between GBA mutations and PD existed in the patients with age at onset ⩽50 years but did not exist in the patients with age at onset >50 years. Furthermore, the associations between N370S, and L444P with PD were also analyzed to explore the roles of the two most frequent GBA mutations in the development of PD. The results showed that significant associations between N370S, and L444P with PD were observed, respectively. Overall, the study supported that GBA mutations were a risk factor for PD in the European population. Patients with early-onset were more likely to carry GBA mutations than those with late-onset. Moreover, both L444P and N370S were associated with increased PD risk.
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Affiliation(s)
- F Zhao
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China
| | - L Bi
- School of Medicine, The University of Adelaide, Adelaide, SA 5005, Australia
| | - W Wang
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China
| | - X Wu
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China
| | - Y Li
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China
| | - F Gong
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China
| | - S Lu
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China
| | - F Feng
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China
| | - Z Qian
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China
| | - C Hu
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China
| | - Y Wu
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China
| | - Y Sun
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China; Centre for Evidence-Based Practice, Anhui Medical University, No. 81 Meishan Road, Hefei 230032, Anhui, China.
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Zhao J, Bai W, Zhu P, Zhang X, Liu S, Wu L, Ma L, Bi L, Zuo X, Sun L, Huang C, Tian X, Li M, Zhao Y, Zeng X. Chinese SLE Treatment and Research group (CSTAR) registry VII: prevalence and clinical significance of serositis in Chinese patients with systemic lupus erythematosus. Lupus 2016; 25:652-7. [PMID: 26762471 DOI: 10.1177/0961203315625460] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 12/07/2015] [Indexed: 11/16/2022]
Abstract
Objectives To investigate both the prevalence and clinical characteristics of serositis in Chinese patients with systemic lupus erythematosus (SLE) in a large cohort in the Chinese SLE Treatment and Research group (CSTAR) database. Methods A prospective cross-sectional study of patients with SLE was conducted based on the data from the CSTAR registry. Serositis was defined according to the 1999 revised American College of Rheumatology (ACR) criteria for SLE – that is, pleuritis/pleural effusion and/or pericarditis/pericardial effusion detected by echocardiography, chest X-ray or chest computerized tomography (CT) scan. Peritonitis/peritoneal effusion were confirmed by abdominal ultrasonography. We analysed the prevalence and clinical associations of serositis with demographic data, organ involvements, laboratory findings and SLE disease activity. Results Of 2104 patients with SLE, 345 were diagnosed with serositis. The prevalence of lupus nephritis (LN), interstitial lung disease and pulmonary arterial hypertension, as well as the presence of leukocytopenia, thrombocytopenia, hypocomplementemia and anti-dsDNA antibodies was significantly higher in patients with serositis ( P < 0.05). Significantly higher SLE disease activity scores were found in patients with serositis compared to those patients without serositis ( P < 0.05). Lupus-related peritonitis had similar clinical manifestations and laboratory profiles as serositis caused by SLE. Conclusions There is a significant association of nephropathy, interstitial lung disease, pulmonary arterial hypertension, hypocomplementemia, leukocytopenia, thrombocytopenia and elevated anti-dsDNA antibodies with serositis. The results suggest that higher SLE disease activity contributes to serositis development, and should be treated aggressively.
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Affiliation(s)
- J Zhao
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences; Key Laboratory of Rheumatology and Clinical Immunology, Beijing, China
| | - W Bai
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences; Key Laboratory of Rheumatology and Clinical Immunology, Beijing, China
| | - P Zhu
- Department of Clinical Immunology and Rheumatology, Xijing Hospital affiliated to the Fourth Military Medical University, Shanxi, China
| | - X Zhang
- Department of Rheumatology, Guangdong Provincial People's Hospital, Guangzhou, China
| | - S Liu
- Department of Rheumatology, First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - L Wu
- Department of Rheumatology, the People's Hospital of Xinjiang Autonomous, Urumqi, China
| | - L Ma
- Department of Rheumatology, China–Japan Friendship Hospital Affiliated to the Ministry of Health of PRC, Beijing, China
| | - L Bi
- Department of Rheumatology, Sino-Japanese friendship Hospital of Jilin University, Changchun, China
| | - X Zuo
- Department of Rheumatology, Xiangya Hospital, Central South University, Changsha, China
| | - L Sun
- Department of Rheumatology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - C Huang
- Department of Rheumatology, Beijing Hospital Affiliated to the Ministry of Health of PRC, Beijing, China
| | - X Tian
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences; Key Laboratory of Rheumatology and Clinical Immunology, Beijing, China
| | - M Li
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences; Key Laboratory of Rheumatology and Clinical Immunology, Beijing, China
| | - Y Zhao
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences; Key Laboratory of Rheumatology and Clinical Immunology, Beijing, China
| | - X Zeng
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences; Key Laboratory of Rheumatology and Clinical Immunology, Beijing, China
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15
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Bi L, Liang ZC. Short communication: Investigation on dynamics and self-diffusion coefficient of [BMIM][PF6] via molecular dynamics simulations. Russ J Phys Chem B 2016. [DOI: 10.1134/s1990793115060226] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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16
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Fan JJ, Cao LG, Bi L, Pei GX. A rat model designed for the continuous intraarterial infusion of cyclosporine. Transplant Proc 2015; 47:549-52. [PMID: 25769605 DOI: 10.1016/j.transproceed.2014.11.041] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2014] [Revised: 10/22/2014] [Accepted: 11/19/2014] [Indexed: 11/24/2022]
Abstract
BACKGROUND Limb allotransplantation is not a life-saving treatment. However, large doses of immunosuppressive agents are needed. There is an urgent need to increase the selectivity and targeting of drugs. METHODS We designed a rat model for intraarterial infusion of cyclosporine (CSA) based on the hindlimb replanted model to simulate the limb allotransplantation. To investigate whether intraartery infusion could improve the drug's distribution, we infused CSA 4.0 mg/kg per day continuously into either the superficial epigastric artery (IA group) or superficial epigastric vein (IV group) of Lewis rats. RESULTS On day 10, CSA concentrations were measured in skin, muscle, and bone tissues of hindlimb. Samples were taken from different parts of the bilateral hindlimbs in the IA group and right hindlimb only in the IV group. Tissue concentrations of the perfusion side were much higher in IA group. Systemic concentrations of IA group were higher than IV group. CONCLUSIONS These results warrant further research in our next limb allotransplantation model.
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Affiliation(s)
- J-J Fan
- Department of Orthopaedic Surgery, Xi Jing Hospital, Fourth Military Medical University, Xi'an, China
| | - L-G Cao
- Department of Orthopaedic Surgery, Guangzhou Red Cross Hospital, Guangzhou, China
| | - L Bi
- Department of Orthopaedic Surgery, Xi Jing Hospital, Fourth Military Medical University, Xi'an, China.
| | - G-X Pei
- Department of Orthopaedic Surgery, Xi Jing Hospital, Fourth Military Medical University, Xi'an, China.
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Wei D, Zhu H, Li Z, Bi L, Zhao W. Use and evaluation of the pedicled sternocleidomastoid flap in oral and maxillofacial surgery. Int J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.ijom.2015.08.380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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18
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An Y, Liu T, Li Z, He D, Wu L, Li J, Liu Y, Bi L, Zhou B, Lin C, He L, Liu X, Li X, Yang N, Zhang Z, Song H, Wei W, Liu J. AB1194 Treatment of Rheumatoid Arthritis with Biological Dmards in China: A Multi-Center Cross-Sectional Study. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.3640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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19
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Liu T, An Y, Li Z, He D, Wu L, Li J, Liu Y, Bi L, Zhou B, Lin C, He L, Liu X, Li X, Yang N, Zhang Z, Song H, Wei W, Liu J. AB1193 Usage Pattern of Concomitant Therapy with Biological Dmards in Chinese Patients with Rheumatoid Arthritis: A Multi-Center Cross-Sectional Study. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.3676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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20
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Zhang S, Su J, Li X, Zhang X, Liu S, Wu L, Ma L, Bi L, Zuo X, Sun L, Huang C, Zhao J, Li M, Zeng X. Chinese SLE Treatment and Research group (CSTAR) registry: V. gender impact on Chinese patients with systemic lupus erythematosus. Lupus 2015; 24:1267-75. [PMID: 25972364 DOI: 10.1177/0961203315585813] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2014] [Accepted: 04/14/2015] [Indexed: 12/11/2022]
Abstract
Introduction Many studies have shown that differences were observed between male and female lupus patients. Although systemic lupus erythematosus (SLE) affects mostly females (female:male ratio 9:1), male SLE patients show higher mortality due to kidney and neurological disease. Currently there are limited epidemiological data concerning lupus in the Chinese population. As such, the Chinese SLE Treatment and Research group (CSTAR) developed the first online registry of Chinese lupus patients in 2009, and represents a multicenter observational study that attempts to describe and compile the major clinical characteristics of lupus in Chinese patients. Objective To investigate the effect of gender on the phenotypes of Chinese SLE patients. Patients and methods Data for 2104 SLE patients were prospectively collected and included in the CSTAR registry. Patients fulfilled the 1997 American College of Rheumatology (ACR) SLE classification criteria. We conducted a cross-sectional case-control study to analyze patient clinical and laboratory data at onset and at enrollment. SLE disease activity scores (SLEDAI) were also measured at enrollment. Results This study included 1914 women and 190 men. Males and females showed no differences in mean ages at onset, delay of diagnosis and disease duration. Males presented more frequently with fever ( p = 0.003), while musculoskeletal involvement ( p = 0.001) and cytopenia ( p = 0.017) was more common in females as the initial manifestation at onset of SLE. For manifestations at enrollment, males presented more frequently with fever ( p = 0.005), renal disease ( p = 0.019), vasculitis ( p = 0.032) and neuropsychiatric lupus ( p = 0.007). For cumulative manifestations at enrollment, males presented more frequently with discoid rash ( p < 0.001) and neuropsychiatric lupus ( p = 0.036), while less frequently with arthritis ( p = 0.011). However, the laboratory data showed no significant differences between the two groups at enrollment. Males also had higher SLEDAI scores at enrollment ( p = 0.002). Conclusions Renal disease, vasculitis and neuropsychiatric lupus are more common in male SLE patients with higher SLEDAI scores compared to female SLE patients in China.
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Affiliation(s)
- S Zhang
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - J Su
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - X Li
- Department of Rheumatology, the Second Hospital of Shanxi Medical University, Shanxi, China
| | - X Zhang
- Department of Rheumatology, Guangdong Provincial People’s Hospital, Guangzhou, China
| | - S Liu
- Department of Rheumatology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - L Wu
- Department of Rheumatology, the People's Hospital of Xinjiang Autonomous, Urumqi, China
| | - L Ma
- Department of Rheumatology, China-Japan Friendship Hospital Affiliated to the Ministry of Health of PRC, Beijing, China
| | - L Bi
- Department of Rheumatology, Sino-Japanese Friendship Hospital of Jilin University, Changchun, China
| | - X Zuo
- Department of Rheumatology, Xiangya Hospital, Central South University, Changsha, China
| | - L Sun
- Department of Rheumatology, the Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - C Huang
- Department of Rheumatology, Beijing Hospital Affiliated to the Ministry of Health of PRC, Beijing, China
| | - J Zhao
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - M Li
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - X Zeng
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
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21
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Cao J, Miao Q, Zhang J, Miao S, Bi L, Zhang S, Yang Q, Zhou X, Zhang M, Xie Y, Wang S. INHIBITORY EFFECT OF TETRAMETHYLPYRAZINE ON HEPATOCELLULAR CARCINOMA: POSSIBLE ROLE OF APOPTOSIS AND CELL CYCLE ARREST. J BIOL REG HOMEOS AG 2015; 29:297-306. [PMID: 26122217] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Hepatocellular carcinoma (HCC) is the fifth most common cancer. An important approach to control HCC is chemoprevention. This study aims at investigating the antitumor effect of Tetramethylpyrazine (TMP). Rats were injected with N-Nitrosodiethylamine (DEN) to establish HCC. Tumor development was observed. Liver function was evaluated. Apoptosis and cell cycle arrest-related makers and signaling cascades were determined by Western blot, RT-PCR and flow cytometric analysis. The administration of TMP could significantly inhibit tumor development in DEN-induced HCC rats, shown by reduced incidence of tumor, decreased number of tumor nodules and reduced maximal size of tumor. DEN-induced increase of aspartate aminotransferase, alanine aminotransferase, lactate dehydrogenase and alkaline phosphatase activities were significantly inhibited by TMP. TMP exhibited inhibitory effect on HCC through induction of apoptosis and cell cycle arrest in rats. TMP induced apoptosis through increasing Bax, decreasing Bcl-2, increasing the release of cytochrome c, and activating caspase, which consisted of the mitochondrial apoptotic pathway. TMP induced G2/M cell cycle arrest through down-regulation of cyclin B1/cdc2. In addition, inhibition of Akt and ERK signaling and the antioxidant activities of TMP may also contribute to its antitumor effect. These data provide new insight into the mechanisms underlying the antitumor effect of TMP.
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MESH Headings
- Alanine Transaminase/blood
- Alkaline Phosphatase/blood
- Animals
- Antineoplastic Agents, Phytogenic/pharmacology
- Antineoplastic Agents, Phytogenic/therapeutic use
- Antioxidants/metabolism
- Apoptosis/drug effects
- Apoptosis Regulatory Proteins/biosynthesis
- Apoptosis Regulatory Proteins/genetics
- Aspartate Aminotransferases/blood
- Cell Cycle/drug effects
- Diethylnitrosamine
- Drug Screening Assays, Antitumor
- Gene Expression Regulation, Neoplastic/drug effects
- Hepatocytes/drug effects
- Hepatocytes/pathology
- L-Lactate Dehydrogenase/blood
- Liver Neoplasms, Experimental/blood
- Liver Neoplasms, Experimental/drug therapy
- Liver Neoplasms, Experimental/genetics
- Liver Neoplasms, Experimental/pathology
- Mitochondria, Liver/drug effects
- Neoplasm Proteins/biosynthesis
- Neoplasm Proteins/blood
- Neoplasm Proteins/genetics
- Oxidation-Reduction
- Pyrazines/pharmacology
- Pyrazines/therapeutic use
- Rats
- Rats, Wistar
- Signal Transduction/drug effects
- Tumor Burden
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Affiliation(s)
- J Cao
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xian, China
| | - Q Miao
- Department of Pharmacy, 401 Military Hospital, Qingdao, China
| | - J Zhang
- Department of Hand Surgery, 401 Military Hospital, Qingdao, China
| | - S Miao
- Institute of Materia Medica, Fourth Military Medical University, Xian, China
| | - L Bi
- Institute of Materia Medica, Fourth Military Medical University, Xian, China
| | - S Zhang
- Department of Pharmacy, Tangdu Hospital, Fourth Military Medical University, Xian, China
| | - Q Yang
- Institute of Materia Medica, Fourth Military Medical University, Xian, China
| | - X Zhou
- Institute of Materia Medica, Fourth Military Medical University, Xian, China
| | - M Zhang
- Institute of Materia Medica, Fourth Military Medical University, Xian, China
| | - Y Xie
- Institute of Materia Medica, Fourth Military Medical University, Xian, China
| | - S Wang
- Institute of Materia Medica, Fourth Military Medical University, Xian, China
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Liu X, Cao Y, Gao G, Mao R, Bi L, Geng M. Gene expression profile of type II spinal cord decompression sickness. Spinal Cord 2014; 52:606-10. [PMID: 24796448 DOI: 10.1038/sc.2014.65] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2014] [Accepted: 04/01/2014] [Indexed: 01/03/2023]
Abstract
STUDY DESIGN This study was an experimental, controlled, animal study. OBJECTIVE This study was to determine the changes of molecular pathology in spinal cord decompression sickness (SC-DCS) based on a rabbit model of SC-DCS with the aid of an all-gene expression profile chip. SETTING Qingdao, Shandong Province, China. METHODS A gene expression profile chip containing 43 803 genes was used to compare the gene expressions in the spinal cords of four male New Zealand white rabbits in the SC-DCS and control groups, respectively. Selected differentially expressed genes were identified with quantitative real-time reverse transcription polymerase chain reaction (qRT-PCR) and immunohistochemistry. RESULTS The chip hybridization results showed that the SC-DCS group had nine upregulated and seventeen downregulated genes, compared with the control group. These genes were mainly related to inflammation, ion channels, the cell cycle, material transfer and apoptosis. The qRT-PCR results showed that parathyroid hormone and tumor necrosis factor alpha (TNF-α) genes were upregulated compared with the control group (P<0.01). However, the acyl-CoA synthetase and voltage-gated channel genes were downregulated (P<0.05). The immunohistochemical staining results confirmed that there were significantly greater expression levels of TNF-α in the spinal cord tissues of the SC-DCS group compared with the control group. CONCLUSIONS The spinal cord lesions of SC-DCS involve multiple gene changes in the rabbit; however, the significance of these findings needs further research. Meanwhile, the gene expression profile chip results provide us with a better understanding of the pathogenesis of DCS.
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Affiliation(s)
- X Liu
- Department of Pathology, General Hospital of Jinan Military Command, Jinan, China
| | - Y Cao
- Department of Pathology, General Hospital of Jinan Military Command, Jinan, China
| | - G Gao
- Department of Hyperbaric Medicine, No. 401, Hospital of PLA, Qingdao, China
| | - R Mao
- Department of Pathology, General Hospital of Jinan Military Command, Jinan, China
| | - L Bi
- Department of Pathology, General Hospital of Jinan Military Command, Jinan, China
| | - M Geng
- Department of Pathology, General Hospital of Jinan Military Command, Jinan, China
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Shi A, Dong Y, Bi L, Xu N, Fan Z, Li S, Yang H, Li Y. Abstract P5-03-14: Expression of ALDH1 in metastasizing axillary lymphnodes in breast cancer. Cancer Res 2012. [DOI: 10.1158/0008-5472.sabcs12-p5-03-14] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: There is increasing evidences that a wide variety of malignancies, including breast cancer, may be driven by a small subset of ‘tumor-initiating cells’ or ‘cancer stem cells’ (CSC) which are able to form tumors in immunocompromised mice as well as to generate the phenotypic heterogeneity of the initial tumor. Enzyme aldehyde dehydrogenase (ALDH1) has been reported as a possible marker for mammary CSC. These cells are a source of tumor recurrence and metastasis, and are resistant to chemotherapy, radiotherapy and hormone therapy.
Objective: Assuming that the detection of CSC in axillary lymph nodes is more effective to predicting cancer outcome than the widely used detection of cancer cells in axillary lymph nodes, we measure ALDH1 levels to predict their presence into axillary lymph nodes on development of cancer and anticipate outcomes.
Methods: ALDH1 protein was detected by an immunohistochemical technique in 229 cases of breast cancer diagnosed from 2002 to 2011 Follow-up ranged from 11.5 months to 96.9 months, with a mean of 73.9 months. A survival assay was used to determine the relationship between distant metastatic rate and survival rate.
Results: ALDHl expression was detected in 79cases and the Positive rate in metastatic axillary lymph nodes was 34.5%. Negative ER, PR status were related to the ALDH1 positive cases(P = 0.012). See Table 1. Mortality rate between ALDH1 positive cases (50.8%) and negative cases (28.8%) were significantly different (P = 0.001). See Table 2. Further, survival analysis of recurrence-free survivals (RFS) and survival rate decreased significantly between ALDHl positive and negative cases (P = 0.001) (see table 2) and COX analysis shows that ALDH1 expression is an independent predictor of poor outcome in breast cancer(P = 0.011).
Discussion: What cancer stem cells migrate to the axillary nodes have more important prediction than that the matastesis of normal cancar cells in axillary node. It might be a role resulting in dying in breast cancer.
Citation Information: Cancer Res 2012;72(24 Suppl):Abstract nr P5-03-14.
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Affiliation(s)
- A Shi
- First Hospital of Bethune Medical College, Jilin University, Changchun, Jilin, China; Lester & Sue Smith Breast Center, Baylor College of Medicine, Houston, TX
| | - Y Dong
- First Hospital of Bethune Medical College, Jilin University, Changchun, Jilin, China; Lester & Sue Smith Breast Center, Baylor College of Medicine, Houston, TX
| | - L Bi
- First Hospital of Bethune Medical College, Jilin University, Changchun, Jilin, China; Lester & Sue Smith Breast Center, Baylor College of Medicine, Houston, TX
| | - N Xu
- First Hospital of Bethune Medical College, Jilin University, Changchun, Jilin, China; Lester & Sue Smith Breast Center, Baylor College of Medicine, Houston, TX
| | - Z Fan
- First Hospital of Bethune Medical College, Jilin University, Changchun, Jilin, China; Lester & Sue Smith Breast Center, Baylor College of Medicine, Houston, TX
| | - S Li
- First Hospital of Bethune Medical College, Jilin University, Changchun, Jilin, China; Lester & Sue Smith Breast Center, Baylor College of Medicine, Houston, TX
| | - H Yang
- First Hospital of Bethune Medical College, Jilin University, Changchun, Jilin, China; Lester & Sue Smith Breast Center, Baylor College of Medicine, Houston, TX
| | - Y Li
- First Hospital of Bethune Medical College, Jilin University, Changchun, Jilin, China; Lester & Sue Smith Breast Center, Baylor College of Medicine, Houston, TX
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Wang J, Meisenberg O, Chen YH, Bi L, Tschiersch J. Mitigation of thoron exposure by application of wallpaper as a diffusion barrier. Radiat Prot Dosimetry 2012; 152:94-97. [PMID: 22908346 DOI: 10.1093/rpd/ncs197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Increasing attention has been paid in recent years to the radioactive gas thoron ((220)Rn), which can cause a significant exposure and increase of lung cancer risk in some regions worldwide. Some experiments were designed to examine whether different types of wall decoration in the room, from ordinary newsprint to commercial wallpaper, can mitigate the concentrations of indoor thoron decay products. Decoration with coated paper was very effective in decreasing the thoron decay products concentration, thus reducing the effective dose by 90 %, while newsprint decoration, which is common in many rural parts of the world, was found to have a smaller but still significant effect in reducing the thoron decay products concentration when applied to the same house.
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Affiliation(s)
- J Wang
- Helmholtz Zentrum München, German Research Center for Environmental Health, Institute of Radiation Protection, Ingolstädter Landstr. 1, 85764 Neuherberg, Germany
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25
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Manjur M, Mohilal N, Pramodini M, Bi L. Parasitic Nematodes of some Insects from Manipur, India. Parasitology 2012. [DOI: 10.5772/33123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Chi S, Cai W, Liu P, Zhang Z, Chen X, Gao L, Qi J, Bi L, Chen L, Qi Z. Baifuzi reduces transient ischemic brain damage through an interaction with the STREX domain of BKCa channels. Cell Death Dis 2011; 1:e13. [PMID: 21364615 PMCID: PMC3039290 DOI: 10.1038/cddis.2009.10] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Stroke is a long-term disability and one of the leading causes of death. However, no successful therapeutic intervention is available for the majority of stroke patients. In this study, we explored a traditional Chinese medicine Baifuzi (Typhonium giganteum Engl.). We show, at first, that the ethanol extract of Baifuzi exerts neuroprotective effects against brain damage induced by transient global or focal cerebral ischemia in rats and mice. Second, the extract activated large-conductance Ca(2+)-activated K(+) channel (BK(Ca)) channels, and BK(Ca) channel blockade suppressed the neuroprotection of the extract, suggesting that the BK(Ca) is the molecular target of Baifuzi. Third, Baifuzi cerebroside (Baifuzi-CB), purified from its ethanol extract, activated BK(Ca) channels in a manner similar to that of the extract. Fourth, the stress axis hormone-regulated exon (STREX) domain of the BK(Ca) channel directly interacted with Baifuzi-CB, and its deletion suppressed channel activation by Baifuzi-CB. These results indicate that Baifuzi-CB activated the BK(Ca) channel through its direct interaction with the STREX domain of the channel and suggests that Baifuzi-CB merits exploration as a potential therapeutic agent for treating brain ischemia.
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Affiliation(s)
- S Chi
- Department of Physiology, Medical College of Xiamen University, Xiamen, China
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27
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Bi L, Tschiersch J, Meisenberg O, Wielunski M, Li JL, Shang B. Development of a new thoron progeny detector based on SSNTD and the collection by an electric field. Radiat Prot Dosimetry 2011; 145:288-294. [PMID: 21493610 DOI: 10.1093/rpd/ncr078] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The importance of (220)Rn (thoron) progeny for human exposure has been widely recognised in the past decades. Since no stable equilibrium factor was found between indoor thoron and its progeny, and the concentration of thoron progeny varies with time, it is necessary to develop detectors for long-term measurement that directly sample and detect thoron progeny. However, power supply of this kind of detectors has always been a problem. In this study, a set of device that is suitable for long-term measurement is introduced. A high-voltage electric field was formed for the collection of charged aerosols attached by (222)Rn (radon) and thoron progenies on solid-state nuclear track detector. Impact from radon progeny could be eliminated with a shield of Al foil of appropriate thickness. Tests were made both in an experimental house and in a thoron chamber in Helmholtz Zentrum München to determine the parameters and to verify the universality under different conditions.
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Affiliation(s)
- L Bi
- Helmholtz Zentrum München - German Research Centre for Environmental Health, Institute of Radiation Protection, 85764 Neuherberg, Germany
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28
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Bi L, Mukherjea A. Identification of parameters and the distribution of the minimum of the tri-variate normal. Stat Probab Lett 2010. [DOI: 10.1016/j.spl.2010.08.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Abstract
The increased indoor thoron level in Europe, North America and Asia has shown that the exposure to thoron and its decay products cannot be ignored in some environments. The contribution of thoron and its progeny can be a significant component of the total exposure from radon and thoron. In the present paper, radiation dose assessment of members of the public of different age and sex exposed to (220)Rn progeny under different daily life activities is performed through a dosimetric approach. Dose conversion coefficients under typical indoor conditions were estimated to be in the range of 107 nSv (Bq h m(-3))(-1) for infant to 81.7 nSv (Bq h m(-3))(-1) for adult. The results of this work emphasized that small children receive a radiation dose of 25% more than adults under the same conditions, and people performing exercise receive a radiation dose 100% more than when sleeping. The results of this work are appropriate to the risk assessment of thoron exposure to members of the public who live in areas with high radon and thoron concentrations.
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Affiliation(s)
- L Bi
- Helmholtz Zentrum München-German Research Center for Environmental Health, Institute of Radiation Protection, Neuherberg, Germany.
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30
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Chalupnik S, Meisenberg O, Bi L, Wang J, Skubacz K, Tschiersch J. Application of LSC and TLD methods for the measurement of radon and thoron decay products in air. Radiat Prot Dosimetry 2010; 141:390-394. [PMID: 20864508 DOI: 10.1093/rpd/ncq223] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Liquid scintillation counting (LSC) is a measuring technique, broadly applied in environmental monitoring. One of the possible applications of LSC is the measurement of radon and thoron progeny. Such a method can be stated as an absolute one. For long-term measurements, a different technique can be applied-monitors of potential alpha energy concentration (PAEC) with thermoluminescent detectors (TLDs). Such solution enables simultaneous measurements of PAEC and dust content. Moreover, the information which is stored in TLD chips is the energy of alpha particles and not the number of counted particles. Therefore, the readout of TL detector directly shows the potential alpha energy, with no dependence on equilibrium factor, etc. This technique, which had been used only for radon progeny measurements, was modified to allow simultaneous measurements of radon and thoron PAEC.
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31
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Su X, Bi L, Hai R, Qimuge S, Ying M, Bahring S, Gong M. HLA-DPB1, -DRB1, and -DQB1 polymorphism defined in Ewenki ethnic minority of China Inner Mongolia Autonomous Region. Int J Immunogenet 2007; 34:435-40. [DOI: 10.1111/j.1744-313x.2007.00718.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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32
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Lee BS, Bi L, Garfinkel DJ, Bailis AM. Nucleotide excision repair/TFIIH helicases RAD3 and SSL2 inhibit short-sequence recombination and Ty1 retrotransposition by similar mechanisms. Mol Cell Biol 2000; 20:2436-45. [PMID: 10713167 PMCID: PMC85430 DOI: 10.1128/mcb.20.7.2436-2445.2000] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/1999] [Accepted: 01/14/2000] [Indexed: 11/20/2022] Open
Abstract
Eukaryotic genomes contain potentially unstable sequences whose rearrangement threatens genome structure and function. Here we show that certain mutant alleles of the nucleotide excision repair (NER)/TFIIH helicase genes RAD3 and SSL2 (RAD25) confer synthetic lethality and destabilize the Saccharomyces cerevisiae genome by increasing both short-sequence recombination and Ty1 retrotransposition. The rad3-G595R and ssl2-rtt mutations do not markedly alter Ty1 RNA or protein levels or target site specificity. However, these mutations cause an increase in the physical stability of broken DNA molecules and unincorporated Ty1 cDNA, which leads to higher levels of short-sequence recombination and Ty1 retrotransposition. Our results link components of the core NER/TFIIH complex with genome stability, homologous recombination, and host defense against Ty1 retrotransposition via a mechanism that involves DNA degradation.
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Affiliation(s)
- B S Lee
- Gene Regulation and Chromosome Biology Laboratory, National Cancer Institute-Frederick Cancer Research and Development Center, National Institutes of Health, Frederick, Maryland 21702-1201, USA
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33
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Bi L, Okabe I, Bernard DJ, Wynshaw-Boris A, Nussbaum RL. Proliferative defect and embryonic lethality in mice homozygous for a deletion in the p110alpha subunit of phosphoinositide 3-kinase. J Biol Chem 1999; 274:10963-8. [PMID: 10196176 DOI: 10.1074/jbc.274.16.10963] [Citation(s) in RCA: 349] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Phosphatidylinositol 3,4,5-trisphosphate is a phospholipid signaling molecule involved in many cellular functions including growth factor receptor signaling, cytoskeletal organization, chemotaxis, apoptosis, and protein trafficking. Phosphorylation at the 3 position of the inositol ring is catalyzed by many different 3-kinases (classified as types IA, IB, II, and III), but the physiological roles played by each of the different 3-kinase isozymes during embryonic development and in homeostasis in animals is incompletely understood. Mammalian type IA kinase isozymes are heterodimers that are active at 37 degrees C when the catalytic 110-kDa subunit interacts through an amino-terminal binding domain with a regulatory 85- or 55-kDa subunit. Using gene targeting in embryonic stem cells, we deleted this binding domain in the gene encoding the alpha isoform of the 110-kDa catalytic subunit (Pik3ca) of the alpha isozyme of the type IA kinases, leading to loss of expression of the p110 catalytic subunit. We show that Pik3cadel/del embryos are developmentally delayed at embryonic day (E) 9.5 and die between E9.5 and E10.5. E9. 5 Pik3cadel/del embryos have a profound proliferative defect but no increase in apoptosis. A proliferative defect is supported by the observation that fibroblasts from Pik3cadel/del embryos fail to replicate in Dulbecco's modified Eagle's medium and fetal calf serum, even with supplemental growth factors.
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Affiliation(s)
- L Bi
- Genetic Diseases Research Branch, NHGRI, National Institutes of Health, Bethesda, Maryland 20892, USA
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Qian J, Borovok M, Bi L, Kazazian HH, Hoyer LW. Inhibitor antibody development and T cell response to human factor VIII in murine hemophilia A. Thromb Haemost 1999; 81:240-4. [PMID: 10063999] [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: 02/11/2023]
Abstract
In order to understand better the mechanism of inhibitor formation in hemophilia A patients, we have characterized the immune response to human factor VIII in a murine model of hemophilia A. Mice with severe factor VIII deficiency caused by targeted gene disruptions in exons 16 and 17 were injected intravenously with human factor VIII. Anti-factor VIII was absent or was detected at only very low levels in hemophilic mice of both strains after a single injection of 0.2 microg factor VIII, but it was present in most mice after a second exposure. Subsequent exposures led to high titer anti-factor VIII antibodies in both ELISA and inhibitor assays. A human factor VIII-specific T cell proliferative response was detected with spleen cells obtained three days after a single injection with human factor VIII, before mice had detectable anti-factor VIII antibodies. Subsequent exposures to factor VIII were followed by an increased T cell proliferative response. These studies indicate that murine hemophilia A is a good model for the study of the immune response to human factor VIII, especially the role of the T cell in the early steps in inhibitor antibody formation.
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Affiliation(s)
- J Qian
- Holland Laboratory, American Red Cross, Rockville, MD 20855, USA
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35
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Zhang Z, Zhang Y, Bi L. [The clinical study on labor pain relief using two kinds of segmental block anesthesia]. Zhonghua Fu Chan Ke Za Zhi 1998; 33:400-2. [PMID: 10806697] [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: 02/16/2023]
Abstract
OBJECTIVE To study the pain relief effectiveness of combined subarachnoid peridural segmental block and simple peridural anesthesia, and their influences on the mothers and the infants. METHODS 100 pregnants women were administered combined subarachnoid and peridural segmental block during labor and delivery (study group). 40 pregnant women received simple peridural anesthesia (control group). The degree of labour pain, side effects, labor course, the mode of delivery and the incidences of postpartum hemorrhage, fetal distress and neonatal asphyxia were observed in two groups respectively. RESULTS The pain relief effect in the study group was much better than that of the control group (P < 0.01). There were no significant differences of the mean time of labor course and the mode of delivery between the two groups (P > 0.05). The incidences of postpartum hemorrhage, fetal distress and neonatal asphyxia were similar (P > 0.05). CONCLUSION The analgesic delivery of combined subarachnoid and peridural segmental block is safe and effective, which has no influences on the labour course and the mothers and infants. Its pain relief effectiveness is more positive and satisfactory than that of simple peridural anesthesia. We suggest that it should be performed in the medical units under optimal conditions.
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Affiliation(s)
- Z Zhang
- Qingdao Municipal Mother and Child Health Care Center
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36
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Bi L, Lei X, Zhu J. [High-level expression of human immunodeficiency virus type 1 gp120 protein in E. coli]. Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi 1998; 12:136-8. [PMID: 12515191] [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
In order to improve protein expression and to produce good and cheap diagnostic antigen, the gene fragment (560bp) in N-terminal of gp120 of HIV-1 LAV strain was amplified by PCR. After digested by EcoR I and Sal I, the fragment was cloned into a high-level expression vector pET28a. The recombinant plasmid pET/120 transfecting BL21 (DE3) produced the protein with high-level expression in the host cell BL21(DE3), which was further proved having good antigenicity and high specificity by indirect ELISA and Western-blot assay. The protein expressed was about 50% of the total bacterial protein by SDS-PAGE electrophoresis test. It was highly expressed in the prokaryotic expression system.
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Affiliation(s)
- L Bi
- Wuhan Institute of Biological Products, Ministry of Health, Wuhan 430060
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37
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Bi L, Li H, Zhang Y. [Effect of trichosanthin of cell cycle and apoptosis of murine melanoma cells]. Zhongguo Zhong Xi Yi Jie He Za Zhi 1998; 18:35-7. [PMID: 11360572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/16/2023]
Abstract
OBJECTIVE To study the inhibitory effect of purified trichosanthin component on the proliferation of malignant melanoma. METHODS The effect of purified trichosanthin component on the DNA synthesis, cell cycle and cell apoptosis of murine melanoma cells were detected by flowcytometry when cultured in vitro. RESULTS The significant G0/G1 phase arrest was revealed by the increase of cells in G0/G1 phase and decrease of cells in S phase. The obvious apoptosis of melanoma cells was induced by purified trichosanthin component. G0/G1 phase arrest was highly correlated with apoptosis (r = 0.8705). CONCLUSIONS The purified trichosanthin component can markedly inhibit melanoma cells by the suppression of DNA synthesis in S phase and cell mitosis as well as induction of cell apoptosis.
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Affiliation(s)
- L Bi
- Third Teaching Hospital, Norman Bethune University of Medical Sciences, Changchun(130031)
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Wu H, Bi L, Shen P, Li Z, Zhu P. Clinical observation and mechanism study on application of auricular-pressing pill for postoperative analgesia. J TRADIT CHIN MED 1997; 17:26-31. [PMID: 10437240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Affiliation(s)
- H Wu
- Surgical Department, Longhua Hospital Affiliated to Shanghai College of TCM, Shanghai
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Bi L, Sarkar R, Naas T, Lawler AM, Pain J, Shumaker SL, Bedian V, Kazazian HH. Further characterization of factor VIII-deficient mice created by gene targeting: RNA and protein studies. Blood 1996; 88:3446-50. [PMID: 8896409] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Previously we created two strains of factor VIII-deficient mice by insertion of a neo gene into (1) the 3' end of exon 16 and (2) exon 17 of the factor VIII gene. Affected mice of both strains have no plasma factor VIII activity, yet are healthy with no spontaneous bleeding. Factor VIII-deficient females bred with affected males survive pregnancy and delivery. We used reverse transcriptase-polymerase chain reaction of liver RNA to characterize factor VIII mRNA processing. Factor VIII mRNA of the exon 16 knockout strain contains neo sequences plus 17 bp of intron 16 due to use of a cryptic donor site in intron 16. All factor VIII mRNA of the exon 17 knockout strain lacks exon 17 and neo sequences. In skipping exon 17, the intron 16 donor site or a cryptic donor site 46 bp 3' to the intron 16 donor site are used. Thus, factor VIII deficiency in exon 16 knockout mice is due to truncated protein, while in exon 17 knockout mice it is due to either truncated or partially deleted protein. After immunizing exon 16 knockout mice with human recombinant factor VIII, two monoclonal antibodies were obtained that recognize < 100 pg of mouse factor VIII light chain. Assay of cryoprecipitate from the plasma of affected mice failed to show factor VIII light chain.
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Affiliation(s)
- L Bi
- Department of Genetics, University of Pennsylvania School of Medicine, Philadelphia 19104, USA
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Bi L, Lawler AM, Antonarakis SE, High KA, Gearhart JD, Kazazian HH. Targeted disruption of the mouse factor VIII gene produces a model of haemophilia A. Nat Genet 1995; 10:119-21. [PMID: 7647782 DOI: 10.1038/ng0595-119] [Citation(s) in RCA: 476] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Haemophilia A is a classic X-linked disease which affects 1 in 5-10,000 males in all populations and is caused by defects in coagulation factor VIII. Roughly 60% of patients have severe disease with factor VIII activity < 1% of normal; they have frequent spontaneous bleeding into joints, soft tissues, muscles and internal organs. These patients usually require regular injections of plasma-derived or recombinant human factor VIII. Because this is expensive and can potentially lead to life-threatening complications, other forms of therapy, including gene therapy, have been proposed. Natural canine models of factor VIII and factor IX deficiency have been available for many years, and gene therapy attempts on these dogs have met with partial success. However, a small animal model of the disease is desirable for studies of factor VIII function and gene therapy. Using gene targeting, we have made a mouse with severe factor VIII deficiency.
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Nakano A, Bi L, Kalia RK, Vashishta P. Molecular-dynamics study of the structural correlation of porous silica with use of a parallel computer. Phys Rev B Condens Matter 1994; 49:9441-9452. [PMID: 10009743 DOI: 10.1103/physrevb.49.9441] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Yu J, Bi L, Kalia RK, Vashishta P. Intermolecular and intramolecular phonons in solid C60: Effects of orientational disorder and pressure. Phys Rev B Condens Matter 1994; 49:5008-5019. [PMID: 10011436 DOI: 10.1103/physrevb.49.5008] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Nakano A, Bi L, Kalia RK, Vashishta P. Structural correlations in porous silica: Molecular dynamics simulation on a parallel computer. Phys Rev Lett 1993; 71:85-88. [PMID: 10054379 DOI: 10.1103/physrevlett.71.85] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Abstract
Hemophilia A is due to the functional deficiency of factor VII (FVIII, gene locus F8C). Although half the patients have no detectable FVIII protein in their plasma, the more rare patients (approximately 5%) have normal levels of a dysfunctional FVIII and are termed cross-reacting material (CRM)-positive. More commonly (approximately 45%), patients have plasma FVIII protein reduced to an extent roughly comparable to the level of FVIII activity and are designated CRM-reduced. We used denaturing gradient gel electrophoresis to screen for mutations within the F8C gene of 11 patients (6 CRM-positive, 5 CRM-reduced) and identified 9 different mutations in 9 patients after analyses of all 26 exons, the promoter region, and the polyadenylation site. Six mutations have not been described previously. Five were missense (Ser289Leu, Ser558Phe, Val634Ala, Val634-Met, Asn1441Lys), and the sixth was a 3-bp deletion (delta Phe652). A review of the literature and the assay of FVIII antigen in 5 hemophilia A patients with previously identified missense mutations from this laboratory yielded a total of 20 other unique CRM-reduced and CRM-positive mutations. Almost all CRM-positive/reduced mutations (24/26) were missense, and many (12/26) occurred at CpG dinucleotides. We examined 19 missense mutations for evolutionary conservation using the portions of the porcine and murine F8C sequences that are known, and 18/19 amino acid residues altered by mutation in these patients were conserved. Almost 50% of mutations (11/26) clustered in the A2 domain, suggesting that this region is critical for the function of FVIII.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- M J McGinniss
- Center for Medical Genetics, Johns Hopkins University School of Medicine, Baltimore, Maryland
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Wu H, Bi L, Xu C, Zhu P. Analgesic effect of pressure on auriculoacupoints for postoperative pain in 102 cases. J TRADIT CHIN MED 1991; 11:22-5. [PMID: 1861505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- H Wu
- Department of Surgery, Long Hua Hospital, Shanghai College of Traditional Chinese Medicine
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Zhu BJ, Bi L, Liang SY, Pang L, Wang SL, Liu JF, Jiang AP, Li CJ, Ye ZJ, Yang H. Effect of acupuncture on left ventricular function, microcirculation, blood rheology and cyclicnucleotides in patients with acute myocardial infarction. J TRADIT CHIN MED 1989; 9:63-8. [PMID: 2548039] [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: 01/01/2023]
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