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Mei W, Wang XM, Liu RA, Xiong W, Zhang YP. [Expression and prognostic significance of KAP1 gene in malignant pleural mesothelioma]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2024; 42:258-267. [PMID: 38677988 DOI: 10.3760/cma.j.cn121094-20221021-00504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/29/2024]
Abstract
Objective: To explore the expression of KAP1 (KRAB-associated protein 1, KAP1) in Malignant pleural mesothelioma (MPM) based on the cancer genome atlas (TCGA) and clinical trials. And elucidate the correlation between the expression of KAP1 and the clinical pathological parameters of patients with MPM and its prognosis. Methods: In April 2022, Based on the second generation KAP1mRNA sequencing data and clinicopathological data of MPM patients downloaded from TCGA database, the correlation between KAP1mRNA expression and clinical parameters was analyzed, and the correlation between KAP1 protein expression and clinicopathological parameters and its prognostic value were analyzed based on Chuxiong data set cohort clinical samples. The expression of KAP1 mRNA in MPM samples and matched normal tumor adjacent tissues was detected by qRT-PCR, and the expression of KAP1 protein in MPM and normal pleural tissues was detected by immunohistochemistry and Westernblotting. To construct a Kaplan-Meier model to explore the effect of KAP1 expression on the prognosis of MPM patients, and to analyze the prognostic factors of MPM patients by Cox regression. Results: qRT-PCR and Western blotting detection showed that the expression levels of KAP1 gene in four different MPM cells (NCI-H28, NCI-H2052, NCI-H2452, and MTSO-211H) were significantly higher than those in normal pleural mesothelial cells Met-5A. qRT-PCR, Western blotting and IHC results demonstrated that the mRNA and protein expression levels of KAP1 in MPM tissues was significantly higher than that in matching normal mesothelial tissues, and the expression level of KAP1 protein was correlated with TP 53 protein expression levels and serum CEA levels (P<0.05) . The mRNA expression level was significantly correlated with the prognosis, The overall survival time of mesothelioma patients with high KAP1mRNA expression was significantly shorter (HR=3.7, Logrank P<0.001) . Tumor type, age and the mRNA expression were related to the prognosis of MPM patients (P<0.05) . Multivariate analysis showed that tumor type and KAP1 mRNA expression level were independent prognostic factors of MPM patients (P<0.05) . Conclusion: In this study, TCGA database and Chuxiong cohort experiment samples were used to collect the relevant information of KAP1 expression in malignant melanoma tissues. It was confirmed that KAP1 is highly expressed in MPM tissues. The mRNA expression level and pathological type are correlated with the prognosis of patients.
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Affiliation(s)
- W Mei
- Department of Pathology, Chuxiong People's Hospital, Chuxiong 675000, China
| | - X M Wang
- College of Basic Medical Sciences, Dali University, Dali 671000, China
| | - R A Liu
- College of Basic Medical Sciences, Dali University, Dali 671000, China
| | - W Xiong
- College of Basic Medical Sciences, Dali University, Dali 671000, China Yunnan Provincial Key Laboratory of Entomological Biopharmaceutical R&D, College of Pharmacy, Dali University, Dali 671000, China
| | - Y P Zhang
- Department of Pathology, Chuxiong People's Hospital, Chuxiong 675000, China
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Mei W, Yang SJ, Zhang YP, Fu QS, Xiong W, Zhao Y. [Analysis of clinicopathological features of 68 cases of malignant pleural mesothelioma]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2023; 41:588-593. [PMID: 37667154 DOI: 10.3760/cma.j.cn121094-20220425-00221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 09/06/2023]
Abstract
Objective: To analyze the clinicopathological characteristics of diffuse malignant pleural mesothelioma (MPM), and explore the diagnostic methods in order to improve the early diagnosis rate. Methods: In January 2019 to January 2022, the clinical features, auxiliary examination and immunohistochemical results of 68 cases of MPM were analyzed retrospectively. The pathogenic features, histopathological morphology and the expression of related antibodies including Calretinin (CR), D2-40 and WT-1 were summarized. Results: Among the 68 patients, 40 male (58.82%), 28 female (41.18%), male to female ratio was 1.43%, median age was 58 years old; 50% of patients in Dayao County, epithelial mesothelioma 59 cases (86.76%), occurred in right chest in 39 cases (57.35%), left chest in 25 cases (36.76%), and 4 cases in both sides (5.89%). The most common initial clinical manifestations were pleural effusion (95.59%), chest pain (36.75%), chest tightness and shortness of breath (30.88%). The main imaging findings were pleural effusion in 49 cases (98.00%) and pleural thickening in 46 cases (92.00%). MPM tumor cells often expressed Calretinin, CK5/6, WT1 and D2-40, while TTF-1, NapsinA and CEA, the main markers differentiated from lung adenocarcinoma were negative. Serum CYFRA21-1 and CEA have high value in differential diagnosis of benign and malignant pleural effusions. Conclusion: Diffuse MPM has diverse histological and cytological morphology, which needs to be differentiated from a variety of diseases. Correct diagnosis of diffuse MPM through immunohistochemistry requires the combined application of a group of Mesothelium related antibodies.
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Affiliation(s)
- W Mei
- Department of Pathology, the First People's Hospital of Chuxiong Yi Autonomous Prefecture, Chuxiong 675000, China
| | - S J Yang
- Department of Pathology, the First People's Hospital of Chuxiong Yi Autonomous Prefecture, Chuxiong 675000, China
| | - Y P Zhang
- Department of Pathology, the First People's Hospital of Chuxiong Yi Autonomous Prefecture, Chuxiong 675000, China
| | - Q S Fu
- Department of Pathology, the First People's Hospital of Chuxiong Yi Autonomous Prefecture, Chuxiong 675000, China
| | - W Xiong
- Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences, Dali University, Key Laboratory of Clinical Biochemistry of Yunnan Province, College of Basic Medical Sciences, Dali University, Yunnan Provincial Key Laboratory of Entomological Biopharmaceutical R&D, College of Pharmacy, Dali University, Dali 671000
| | - Y Zhao
- Department of Pathology, the First People's Hospital of Chuxiong Yi Autonomous Prefecture, Chuxiong 675000, China
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Li B, Zhou CX, Pu YQ, Qiu L, Mei W, Xiong W. [Expression of CD24 gene in human malignant pleural mesothelioma and its relationship with prognosis]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2023; 41:168-176. [PMID: 37006141 DOI: 10.3760/cma.j.cn121094-20220228-00100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
Abstract
Objective: To investigate the expression of CD24 gene in human malignant pleural mesothelioma (MPM) cells and tissues, and evaluate its relationship with clinicopathological characteristics and clinical prognosis of MPM patients. Methods: In February 2021, UALCAN database was used to analyze the correlation between CD24 gene expression and clinicopathological characteristics in 87 cases of MPM patients. The TIMER 2.0 platform was used to explore the relationship between the expression of CD24 in MPM and tumor immune infiltrating cells. cBioportal online tool was used to analyze the correlation between CD24 and MPM tumor marker gene expression. RT-qPCR was used to analyze the expressions of CD24 gene in human normal pleural mesothelial cell lines LP9 and MPM cell lines NCI-H28 (epithelial type), NCI-H2052 (sarcoma type), and NCI-H2452 (biphasic mixed type). RT-qPCR was performed to detect the expressions of CD24 gene in 18 cases of MPM tissues and matched normal pleural tissues. The expression difference of CD24 protein in normal mesothelial tissue and MPM tissue was analyzed by immunohistochemistry. A Kaplan-Meier model was constructed to explore the influence of CD24 gene expression on the prognosis of MPM patients, and Cox regression analysis of prognostic factors in MPM patients was performed. Results: The CD24 gene expression without TP53 mutation MPM patients was significantly higher than that of patients in TP53 mutation (P<0.05). The expression of CD24 gene in MPM was positively correlated with B cells (r(s)=0.37, P<0.001). The expression of CD24 gene had a positive correlation with the expressions of thrombospondin 2 (THBS2) (r(s)=0.26, P<0.05), and had a negative correlation with the expression of epidermal growth factor containing fibulin like extracellular matrix protein 1 (EFEMP1), mesothelin (MSLN) and calbindin 2 (CALB2) (r(s)=-0.31, -0.52, -0.43, P<0.05). RT-qPCR showed that the expression level of CD24 gene in MPM cells (NCI-H28, NCI-H2052 and NCI-H2452) was significantly higher than that in normal pleural mesothelial LP9 cells. The expression level of CD24 gene in MPM tissues was significantly higher than that in matched normal pleural tissues (P<0.05). Immunohistochemistry showed that the expressions of CD24 protein in epithelial and sarcoma MPM tissues were higher than those of matched normal pleural tissues. Compared with low expression of CD24 gene, MPM patients with high expression of CD24 gene had lower overall survival (HR=2.100, 95%CI: 1.336-3.424, P<0.05) and disease-free survival (HR=1.800, 95%CI: 1.026-2.625, P<0.05). Cox multivariate analysis showed that compared with the biphasic mixed type, the epithelial type was a protective factor for the prognosis of MPM patients (HR=0.321, 95%CI: 0.172-0.623, P<0.001). Compared with low expression of CD24 gene, high expression of CD24 gene was an independent risk factor for the prognosis of MPM patients (HR=2.412, 95%CI: 1.291-4.492, P=0.006) . Conclusion: CD24 gene and protein are highly expressed in MPM tissues, and the high expression of CD24 gene suggests poor prognosis in MPM patients.
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Affiliation(s)
- B Li
- College of Basic Medical Sciences, Dali University, Dali 671000, China Key Laboratory of Clinical Biochemical Testing in Yunnan Province Universities, Dali 671000, China
| | - C X Zhou
- College of Basic Medical Sciences, Dali University, Dali 671000, China Key Laboratory of Clinical Biochemical Testing in Yunnan Province Universities, Dali 671000, China
| | - Y Q Pu
- College of Basic Medical Sciences, Dali University, Dali 671000, China Key Laboratory of Clinical Biochemical Testing in Yunnan Province Universities, Dali 671000, China
| | - L Qiu
- College of Chemistry and Life Sciences, Chuxiong Normal University, Chuxiong 675000, China
| | - W Mei
- Department of Pathology, Chuxiong Yi Autonomous Prefecture First People's Hospital, Chuxiong 675000, China
| | - W Xiong
- College of Basic Medical Sciences, Dali University, Dali 671000, China Key Laboratory of Clinical Biochemical Testing in Yunnan Province Universities, Dali 671000, China
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Manickam A, Peterson J, Mei W, Murdoch D, Margolis D, Oesterling A, Guo Z, Rudin C, Jiang Y, Browne E. PP 1.33 – 00167 Integrated single-cell multi-omic profiling of HIV latency reversal. J Virus Erad 2022. [DOI: 10.1016/j.jve.2022.100137] [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: 12/24/2022] Open
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Zhao H, Sun L, Kong C, Mei W, Dai H, Xu F, Huang S. Phytochemical and pharmacological review of diterpenoids from the genus Euphorbia Linn (2012-2021). J Ethnopharmacol 2022; 298:115574. [PMID: 35944737 DOI: 10.1016/j.jep.2022.115574] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [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: 05/24/2022] [Revised: 07/07/2022] [Accepted: 07/18/2022] [Indexed: 06/15/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Euphorbia is one of the major genera in angiosperms, which is widely distributed all over the world, including Asia, Africa and Central and South America. The roots or tubers of Euphorbia are famous for medicinal purposes, especially in China. Many of them, such as Euphorbia pekinensis Rupr, Euphorbia fischeriana Steud and Euphorbia Kansui S.L.Liou ex S.B.Ho. . are used as Chinese herbal medicines. AIM OF THE STUDY This paper reviews the diterpenoids isolated from the genus Euphorbia species and the pharmacological activities of these compounds to evaluate its traditional use and potential future development. MATERIALS AND METHODS Information on the studies of the genus Euphorbia Linn was collected from scientific journals, books and reports via library and electronic data search (Scifinder, Web of Science, PubMed, Elsevier, Scopus, Google Scholar, Springer, Science Direct, Wiley, ACS, CNKI and Kew Plants of the Word Online). Meanwhile, it was also obtained from published works of material medica, folk records, ethnophmacological literatures, Ph.D. and Masters dissertations. RESULTS Known as the main constituents of the genus Euphorbia Linn, Diterpenoids possess many pharmacological properties such as anti-inflammation, antiviral activities and cytotoxicity. To date, various types of diterpenoids were identified from this genus, including isopimarane, rosane, abietane, ent-kaurane, ent-atisane. cembrane, casbane, lathyrane, myrsinane, jatropholane, tigliane, ingenane, jatrophane, paraliane, pepluane, and euphoractin. CONCLUSIONS This review describes 14 types of diterpenoid isolated from 45 Euphorbia species from 2012 to 2021, a total of 615 compounds. Among them, mainly include jatrophane (171), lathyrane (92), myrsinane (62), abietane (70), ent-atisane (36), ent-kaurane (7), tigliane (26) and ingenane (19). The possible biological pathways of these compounds were presumed. At the same time, more than 10 biological activities of these compounds were summarized, such as anti-inflammation, antiviral activities and cytotoxicity.
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Affiliation(s)
- Huan Zhao
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, 230012, China
| | - Lei Sun
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, 230012, China
| | - ChuiHao Kong
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, 230012, China
| | - WenLi Mei
- Key Laboratory of Research and Development of Natural Product from Li Folk Medicine of Hainan Province, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan 571101, China; Hainan Institute for Tropical Agricultural Resources, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, PR China
| | - HaoFu Dai
- Key Laboratory of Research and Development of Natural Product from Li Folk Medicine of Hainan Province, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan 571101, China; Hainan Institute for Tropical Agricultural Resources, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, PR China
| | - FengQing Xu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, 230012, China; Anhui Province Key Laboratory of New Manufacturing Technology for Traditional Chinese Medicine Decoction Pieces, Hefei, 230012, PR China.
| | - ShengZhuo Huang
- Key Laboratory of Research and Development of Natural Product from Li Folk Medicine of Hainan Province, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan 571101, China; Hainan Institute for Tropical Agricultural Resources, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, PR China.
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6
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Zhang ZH, Wang QD, Wang ZW, Jiang WT, Liu PL, Kang YS, Su K, Mei W. [The clinical effect of ultrasonic bone curette-assisted "zoning" style laminectomy for the treatment of severe ossification of thoracic ligamentum flavum]. Zhonghua Wai Ke Za Zhi 2021; 59:940-946. [PMID: 34743458 DOI: 10.3760/cma.j.cn112139-20210510-00207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the safety and clinical efficacy of "zoning" style laminectomy by ultrasonic bone curette in patients with severe thoracic ossification of the ligamentum flavum(TOLF). Methods: The clinical data of 36 patients with severe TOLF treated by "zoning" style laminectomy at Department of Spinal Surgery,Zhengzhou Orthopaedic Hospital from October 2015 to October 2018 were respectively analyzed.There were 17 males and 19 females,aged(57.3±10.2)years(range:43 to 80 years).According to the anatomical characteristics of the thoracic ligamentum flavum and the pathological process of ossionization,each decompression segment was divided into the upper 1/3 area of the lamina,the bilateral area of the ossionum flavum,the transitional area,and the area of close contact between the ossionum flavum and the spinal cord.Different surgical strategies were used for decompression in turn.The modified Japanese Orthopedic Association (mJOA) was used to evaluate the neurological function status before and after surgery,to evaluate the surgical effect of patients,and to observe the surgical complications.Paired sample T test was used for data analysis. Results: All 36 patients successfully completed the operation,the operation time was (88.6±24.6) minutes(range:60 to 150 minutes).The intraoperative blood loss was (426.7±167.4) ml(range:250 to 800 ml).Follow-up time was (27.2±7.7) months(range:12 to 48 months).The mJOA score at the last follow-up was 9.0±1.5,which was statistically significant compared with the preoperative score 5.4±1.8 (t=13.59,P<0.01).The improvement rate of mJOA score was (65.7±22.1) %,of which 17 cases were excellent (47.2%),13 cases were good (36.1%),4 cases were normal (11.1%),2 cases were ineffective (5.6%).Ten patients had cerebrospinal fluid leakage during the separation or removal of dural ossification and were cured after a series of comprehensive conservative treatment.Two patients showed transient neurological deterioration,and the neurological function gradually recovered to the preoperative state after comprehensive treatment such as increasing the mean arterial pressure and using neurotrophic drugs.During the follow-up,no aggravation of neurological dysfunction and segmental kyphosis were found. Conclusions: The ultrasonic bone curette-assisted "zoning" style laminectomy for the treatment of severe TOLF can directly observed the position relationship between ossification of the ligamentum flavum and the spinal canal structure during the operation,and accurately guide the surgical decompression.It has the advantages of safe operation and complete decompression,which provides an important reference for the selection of clinical surgery.
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Affiliation(s)
- Z H Zhang
- Department of Spinal Surgery,Zhengzhou Orthopaedic Hospital,Zhengzhou 450052,China
| | - Q D Wang
- Department of Spinal Surgery,Zhengzhou Orthopaedic Hospital,Zhengzhou 450052,China
| | - Z W Wang
- Department of Spinal Surgery,Zhengzhou Orthopaedic Hospital,Zhengzhou 450052,China
| | - W T Jiang
- Department of Spinal Surgery,Zhengzhou Orthopaedic Hospital,Zhengzhou 450052,China
| | - P L Liu
- Department of Spinal Surgery,Zhengzhou Orthopaedic Hospital,Zhengzhou 450052,China
| | - Y S Kang
- Department of Spinal Surgery,Zhengzhou Orthopaedic Hospital,Zhengzhou 450052,China
| | - K Su
- Department of Spinal Surgery,Zhengzhou Orthopaedic Hospital,Zhengzhou 450052,China
| | - W Mei
- Department of Spinal Surgery,Zhengzhou Orthopaedic Hospital,Zhengzhou 450052,China
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Wang C, Wang T, Lian BW, Lai S, Li S, Li YM, Tan WJ, Wang B, Mei W. Developmental toxicity of cryptotanshinone on the early-life stage of zebrafish development. Hum Exp Toxicol 2021; 40:S278-S289. [PMID: 34423663 DOI: 10.1177/09603271211009954] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Cryptotanshinone (Cry) has multiple potential functions in treating different diseases. Most studies on Cry focus on its pharmacological effects and mechanisms, but toxicological reports on Cry are rare. Zebrafish is used as a model organism in drug development as it saves costs and time. This work aimed to investigate the toxicity of Cry on zebrafish. Results showed that growth retardation, pericardial edema, and scoliosis occurred when zebrafish embryos were exposed to Cry, indicating its teratogenic effects. Cell apoptosis was observed in the brainstem area of embryos using acridine orange staining, and qPCR showed that caspase-3 was increased in Cry-exposed embryos. The results of locomotor activity and touched-evoke escape reaction experiments showed that Cry significantly reduced the swimming speed and escape reaction time of larvae.
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Affiliation(s)
- C Wang
- Department of Pharmacology, School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, People's Republic of China.,Department of Pharmaceutical Chemistry, Guangdong Province Engineering Technology Center for Molecular Probes & Biomedical Imaging, Guangzhou, People's Republic of China
| | - T Wang
- Department of Epidemiology and Health Statistics, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, People's Republic of China
| | - B-W Lian
- Department of Epidemiology and Health Statistics, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, People's Republic of China
| | - S Lai
- Department of Epidemiology and Health Statistics, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, People's Republic of China
| | - S Li
- Department of Pharmacology, School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, People's Republic of China.,Department of Pharmaceutical Chemistry, Guangdong Province Engineering Technology Center for Molecular Probes & Biomedical Imaging, Guangzhou, People's Republic of China
| | - Y-M Li
- Department of Pharmacology, School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, People's Republic of China.,Department of Pharmaceutical Chemistry, Guangdong Province Engineering Technology Center for Molecular Probes & Biomedical Imaging, Guangzhou, People's Republic of China
| | - W-J Tan
- Department of Food Safety, School of Food Science, Guangdong Pharmaceutical University, Guangzhou, People's Republic of China
| | - B Wang
- Department of Epidemiology and Health Statistics, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, People's Republic of China
| | - W Mei
- Department of Pharmacology, School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, People's Republic of China.,Department of Pharmaceutical Chemistry, Guangdong Province Engineering Technology Center for Molecular Probes & Biomedical Imaging, Guangzhou, People's Republic of China
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Mei W, Hong B, Huang G. [Mechanism of high expression of high mobility group protein 1 in a rat model of knee osteoarthritis]. Nan Fang Yi Ke Da Xue Xue Bao 2021; 41:1142-1149. [PMID: 34549703 DOI: 10.12122/j.issn.1673-4254.2021.08.03] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To investigate the molecular mechanism triggering pyroptosis of synovial fibroblast-like synoviocytes(FLSs)and the release of high mobility group protein 1(HMGB1)in a rat model of knee osteoarthritis(KOA). METHODS Twelve SD rats were randomized equally into blank control group without any treatment and KOA group with anterior cruciate ligament amputation (ACLT) to induce KOA.HE staining and Mankin score were used to evaluate the damage of knee cartilage.Western blotting was used to detect the expression of pyroptosis-related proteins and HMGB1 in the synovial tissue.In the cell experiment, rat FLSs were treated with PBS (control group), LPS+ATP (to induce cell pyroptosis), or LPS+ATP+siRNAs (to inhibit pyroptosis of the FLSs), and the cellular expressions of apoptosis-related proteins and HMGB1 were detected using Western blotting; the level of HMGB1 in the culture supernatant was detected with ELISA. RESULTS In the rat models of KOA, the expressions of pyroptosis-related proteins and HMGB1 in the synovial tissue and Mankin score were significantly increased as compared with those in the control group(P < 0.05).In cultured rat FLSs, the expressions of apoptosis related proteins and HMGB1 were significantly higher in the pyroptosis group than in the control group and in cells transfected with the siRNAs targeting NLRP1, NLRP3, ASC and caspase-1(P < 0.05).The protein level of HMGB1 in the culture supernatant was significantly higher in pyroptosis group than in the control and siRNA groups (P < 0.05). CONCLUSION In the pathological process of KOA, NLRPs inflammasome-mediated FLS pyroptosis causes massive release of HMGB1, which is associated with the activation of the downstream molecule caspase-1.
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Affiliation(s)
- W Mei
- Department of Orthopedics and Traumatology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210000, China
| | - B Hong
- Department of Orthopedics and Traumatology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210000, China
| | - G Huang
- Department of Orthopedics and Traumatology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210000, China
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Zhu S, Yang C, Li J, Mei W. 121 Mediating Factors Between Caregiver Burden and Quality of Life in Caregivers of Older Patients with Newly Diagnosed Lung Cancer. Age Ageing 2021. [DOI: 10.1093/ageing/afab030.82] [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: 11/14/2022] Open
Abstract
Abstract
Introduction
Family caregivers of older patients with newly diagnosed lung cancer become responsible for patients’ care, usually without preparation or training in provision of care. Their efforts of care generate caregiving burden, which could deteriorate their quality of life and affect the prognosis of patients. The aims of this study were to examine associations between caregiver burden and quality of life, coping, social support for family caregivers, and to investigate whether coping and social support mediate associations between family caregiver burden and their quality of life.
Methods
A cross-sectional study was performed at two thoracic surgery wards in one tertiary hospital in Changsha, China from November 2019 to May 2020. This study involved 224 family caregivers of patients aged over 50 years and newly diagnosed with lung cancer. Caregivers-reported outcomes were measured by Zarit caregiver burden interview, simplified coping style questionnaire, social support rating scale, and quality of life family version. Structural equation modeling (SEM) was used to test the hypothesized mediation model.
Results
SEM indicated a good fit for the mediation model, which explained 49.7% of the variance of quality of life. Higher level of caregivers’ burden was negatively associated with quality of life (r = 0.183, P = 0.042). Coping partially mediated the effect of caregiver burden on quality of life (indirect effect −0.389, P = 0.000). Social support did not mediate the relationship between caregiver burden and quality of life (indirect effect −0.023, P = 0.087).
Conclusions
Caregivers’ burden of patients with newly diagnosed lung cancer is correlated to quality of life which is partially mediated by coping. Early intervention providing caregivers with positive coping strategies may improve their quality of life.
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Affiliation(s)
- S Zhu
- Department of Thoracic Surgery, The Second Xiangya Hospital of Central South University, Changsha, China
| | - C Yang
- The Nethersole School of Nursing, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - J Li
- Department of Thoracic Surgery, The Second Xiangya Hospital of Central South University, Changsha, China
| | - W Mei
- Department of Thoracic Surgery, The Second Xiangya Hospital of Central South University, Changsha, China
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Wang TL, Mei W. [The low-dose opioids therapy of perioperative multi-mode analgesia is pivotal to the enhanced recovery after surgery for elderly patients]. Zhonghua Yi Xue Za Zhi 2021; 101:167-169. [PMID: 33455147 DOI: 10.3760/cma.j.cn112137-20200629-01982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The implementation of enhanced recovery after surgery in elderly patients should be under the premise of adequate perioperative analgesia/anti-stress. The aims of perioperative multimodal low-dose opioids analgesia therapy are reducing opioid-related adverse reactions and the impact on process of postoperative recovery.
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Affiliation(s)
- T L Wang
- Department of Anesthesiology and Operating Theater, Xuanwu Hospital of Capital Medical University, Beijing 100053, China
| | - W Mei
- Department of Anesthesiology, Tongji Hospital of Huazhong Science and Technology Affiliated Tongji Medical College, Wuhan 430030, China
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Wu X, Li J, Joypaul K, Bao WW, Wang D, Huang YJ, Li PC, Mei W. Blood flow index as an indicator of successful sciatic nerve block: a prospective observational study using laser speckle contrast imaging. Br J Anaesth 2018; 121:859-866. [PMID: 30236247 DOI: 10.1016/j.bja.2018.05.065] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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: 12/18/2017] [Revised: 04/10/2018] [Accepted: 06/07/2018] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Laser speckle contrast imaging allows real-time, non-invasive, quantitative measurements of regional blood flow. The objectives of this prospective observational study were to use laser speckle contrast imaging to evaluate blood flow changes after sciatic nerve block, and to determine whether this novel optical technique can evaluate block success. METHODS This observational study included 63 adult patients undergoing elective lower limb surgery with sciatic nerve block. Blood flow images and blood flow index (BFI) values of toes were recorded using laser speckle contrast imaging 5 min before nerve block and at 5 min intervals until 30 min after sciatic block. The sensitivity, specificity, and cut-off value of laser speckle contrast imaging for predicting successful sciatic block were determined by receiver operator characteristic (ROC) curve analysis. RESULTS The BFI values of toes were significantly increased at each time point after successful sciatic block, compared with the baseline value obtained 5 min before nerve block; in failed sciatic block, there were no significant differences. For successful sciatic block, the highest increase of BFI value was at the big toe. BFI increase of the big toe at 10 min after sciatic block has great potential as an indicator of block success. The area under the ROC curve was 0.954 at a cut-off value of 8.48 perfusion units (PU) with a sensitivity of 89% and a specificity of 100%. CONCLUSIONS Laser speckle contrast imaging might be an early, objective, quantitative, and reliable indicator of successful sciatic block. BFI increase of the big toe not reaching 8.48 PU within 10 min after sciatic block indicates block failure. CLINICAL TRIAL REGISTRATION NCT03169517.
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Affiliation(s)
- X Wu
- Department of Anaesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - J Li
- Department of Anaesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Department of Anaesthesiology, Shenzhen Second People's Hospital, Shenzhen, China
| | - K Joypaul
- Department of Anaesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Department of Anaesthesiology, Flacq Hospital, Centre-de-Flacq, Mauritius
| | - W W Bao
- Department of Anaesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Department of Anaesthesiology, Xinqiao Hospital, The Third Military Medical University, Chongqing, China
| | - D Wang
- Department of Anaesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Y J Huang
- Department of Anaesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - P C Li
- Britton Chance Center for Biomedical Photonics, School of Engineering Sciences, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China.
| | - W Mei
- Department of Anaesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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Niu B, Xiao JY, Fang Y, Zhou BY, Li J, Cao F, Tian YK, Mei W. Sevoflurane-induced isoelectric EEG and burst suppression: differential and antagonistic effect of added nitrous oxide. Anaesthesia 2017; 72:570-579. [PMID: 28272748 PMCID: PMC5413860 DOI: 10.1111/anae.13843] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/26/2017] [Indexed: 01/04/2023]
Abstract
The objective of this study was to investigate whether nitrous oxide influenced the ED50 of sevoflurane for induction of isoelectric electroencephalogram (ED50isoelectric ) differently from its influence on the ED50 of sevoflurane for electroencephalogram burst suppression (ED50burst ). In a prospective, randomised, double-blind, parallel group, up-down sequential allocation study, 77 ASA physical status 1 and 2 patients received sevoflurane induction and, after tracheal intubation, were randomly allocated to receive sevoflurane with either 40% oxygen in air (control group) or 60% nitrous oxide in oxygen mixture (nitrous group). The ED50isoelectric in the two groups was determined using Dixon's up and down method, starting at 2.5% with 0.2% step size of end-tidal sevoflurane. The electroencephalogram was considered as isoelectric when a burst suppression ratio of 100% lasted > 1 min. The subsequent concentrations of sevoflurane administered were determined by the presence or absence of isoelectric electroencephalogram in the previous patient in the same group. The ED50isoelectric in the nitrous group 4.08 (95%CI, 3.95-4.38)% was significantly higher than that in the control group 3.68 (95%CI, 3.50-3.78)% (p < 0.0001). The values for ED50burst were 3.05 (95%CI, 2.66-3.90)% and 3.02 (95%CI, 3.00-3.05)% in nitrous group and control group, respectively (p = 0.52). The addition of 60% nitrous oxide increases ED50isoelectric , but not the ED50burst of sevoflurane. Neither result indicates an additive effect of anaesthetic agents, as might be expected, and possible reasons for this are discussed.
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Affiliation(s)
- B Niu
- Department of Anaesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - J Y Xiao
- Department of Anaesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Y Fang
- Department of Anaesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - B Y Zhou
- Department of Anaesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - J Li
- Department of Anaesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - F Cao
- Department of Anaesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Y K Tian
- Department of Anaesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - W Mei
- Department of Anaesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Li R, Fan Z, Ding L, Mei W, Li X, Chen H, Luo Q, Fu N, Ouyang J, Mao Y, Liu Y, Dang S, Hu J, Zhang J, Deng J, Yu S, Zhu Y, Chen Y, Xie Y. EP-1741: MRI assess hypnosis control respiratory motion applied to radiotherapy for lung cancer patients. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)32992-9] [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: 11/30/2022]
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14
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Fang G, Wan L, Mei W, Yu HH, Luo AL. The minimum effective concentration (MEC90) of ropivacaine for ultrasound-guided supraclavicular brachial plexus block. Anaesthesia 2016; 71:700-5. [PMID: 26945818 DOI: 10.1111/anae.13445] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/08/2016] [Indexed: 12/31/2022]
Affiliation(s)
- G. Fang
- Department of Anesthesiology; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - L. Wan
- Department of Anesthesiology; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - W. Mei
- Department of Anesthesiology; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - H. H. Yu
- Department of Anesthesiology; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - A. L. Luo
- Department of Anesthesiology; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
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Corrales J, Fang X, Thornton C, Mei W, Barbazuk WB, Duke M, Scheffler BE, Willett KL. Effects on specific promoter DNA methylation in zebrafish embryos and larvae following benzo[a]pyrene exposure. Comp Biochem Physiol C Toxicol Pharmacol 2014; 163:37-46. [PMID: 24576477 PMCID: PMC4032594 DOI: 10.1016/j.cbpc.2014.02.005] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Revised: 02/15/2014] [Accepted: 02/17/2014] [Indexed: 12/16/2022]
Abstract
Benzo[a]pyrene (BaP) is an established carcinogen and reproductive and developmental toxicant. BaP exposure in humans and animals has been linked to infertility and multigenerational health consequences. DNA methylation is the most studied epigenetic mechanism that regulates gene expression, and mapping of methylation patterns has become an important tool for understanding pathologic gene expression events. The goal of this study was to investigate aberrant changes in promoter DNA methylation in zebrafish embryos and larvae following a parental and continued embryonic waterborne BaP exposure. A total of 21 genes known for their role in human diseases were selected to measure percent methylation by multiplex deep sequencing. At 96hpf (hours post fertilization) compared to 3.3hpf, dazl, nqo1, sox3, cyp1b1, and gstp1 had higher methylation percentages while c-fos and cdkn1a had decreased CG methylation. BaP exposure significantly reduced egg production and offspring survival. Moreover, BaP decreased global methylation and altered CG, CHH, and CHG methylation both at 3.3 and 96hpf. CG methylation changed by 10% or more due to BaP in six genes (c-fos, cdkn1a, dazl, nqo1, nrf2, and sox3) at 3.3hpf and in ten genes (c-fos, cyp1b1, dazl, gstp1, mlh1, nqo1, pten, p53, sox2, and sox3) at 96hpf. BaP also induced gene expression of cyp1b1 and gstp1 at 96hpf which were found to be hypermethylated. Further studies are needed to link aberrant CG, CHH, and CHG methylation to heritable epigenetic consequences associated with disease in later life.
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Affiliation(s)
- J Corrales
- Department of Pharmacology, University of Mississippi, University, MS 38677, USA
| | - X Fang
- Department of Pediatrics, University of Florida, Gainesville, FL 32610, USA
| | - C Thornton
- Department of Pharmacology, University of Mississippi, University, MS 38677, USA
| | - W Mei
- Department of Biology, University of Florida, Gainesville, FL 32669, USA
| | - W B Barbazuk
- Department of Biology, University of Florida, Gainesville, FL 32669, USA; University of Florida Genetics Institute, Gainesville, FL 32669, USA
| | - M Duke
- Genomics Bioinformatics, USDA ARS, Stoneville, MS 38776, USA
| | - B E Scheffler
- Genomics Bioinformatics, USDA ARS, Stoneville, MS 38776, USA
| | - K L Willett
- Department of Pharmacology, University of Mississippi, University, MS 38677, USA.
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16
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Niu B, Fang Y, Miao JM, Yu Y, Cao F, Chen HX, Zhang ZG, Mei W, Tian YK. Minimal alveolar concentration of sevoflurane for induction of isoelectric electroencephalogram in middle-aged adults. Br J Anaesth 2013; 112:72-8. [PMID: 23975567 DOI: 10.1093/bja/aet280] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [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: 11/14/2022] Open
Abstract
BACKGROUND We determined the minimal alveolar concentration (MAC) of sevoflurane inducing an isoelectric EEG in 50% of adult subjects (MACie). METHODS We included 31 middle-aged subjects; 30 subjects finished the study protocol and received sevoflurane at preselected concentrations according to a modified Dixon 'up-and-down' design starting at 1.7 vol% with 0.2 vol% steps size. General anaesthesia was induced and maintained with sevoflurane; tracheal intubation was facilitated with cisatracurium. After a period of 30 min before skin incision, the state of isoelectric EEG was considered as significant when a burst suppression ratio of 100% lasted for >1 min. The haemodynamic responses to skin incision and the vasopressor requirement to maintain stable haemodynamic status were also analysed according to the EEG state. RESULTS MACie was 3.5% (95% confidence interval, 3.4-3.7%) in middle-aged subjects. When compared with subjects not in isoelectric EEG state, subjects in isoelectric EEG state received more phenylephrine to maintain stable haemodynamics (10 of 10 compared with 7 of 20 subjects, P=0.001) and experienced less sympathetic responses to skin incision (1 of 10 compared with 11 of 20 subjects, P=0.024). CONCLUSIONS MACie for sevoflurane was ∼2.1 times MAC for immobilization in phenobarbital premedicated middle-aged adults. Sevoflurane-induced isoelectric EEG state is associated with significant cardiovascular depression but reduced haemodynamic responses to skin incision.
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Affiliation(s)
- B Niu
- Department of Anaesthesiology and Pain Medicine, Tongji Hospital
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17
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Mei W, Li M, Yu Y, Cheung C, Cao F, Nie B, Zhang Z, Wang P, Tian Y. Tropisetron alleviate early post-operative pain after gynecological laparoscopy in sevoflurane based general anaesthesia: A randomized, parallel-group, factorial study. Eur J Pain 2013; 18:238-48. [PMID: 23868810 DOI: 10.1002/j.1532-2149.2013.00365.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/19/2013] [Indexed: 01/04/2023]
Affiliation(s)
- W. Mei
- Department of Anaesthesiology and Pain Medicine; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - M. Li
- Department of Anaesthesiology and Pain Medicine; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - Y. Yu
- Department of Otolaryngology-Head and Neck Surgery; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - C.W. Cheung
- Department of Anaesthesiology; The University of Hong Kong; Queen Mary Hospital; HKSAR China
| | - F. Cao
- Department of Anaesthesiology and Pain Medicine; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
- Department of Neuroscience; Baylor College of Medicine; Houston USA
| | - B. Nie
- Department of Anaesthesiology and Pain Medicine; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - Z. Zhang
- School of Medicine and Health Management; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - P. Wang
- Department of Anaesthesiology and Pain Medicine; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - Y. Tian
- Department of Anaesthesiology and Pain Medicine; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
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Gong Z, Zhang Z, Shan X, Mei W, Li D. HLA-B*27:44, a novel allele identified by sequence-based typing, is a well-documented allele in China. ACTA ACUST UNITED AC 2013; 81:175-6. [PMID: 23398512 DOI: 10.1111/tan.12062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2012] [Revised: 12/05/2012] [Accepted: 01/08/2013] [Indexed: 11/26/2022]
Abstract
The sequence of HLA-B*27:44 differs in exon 2 from the sequence of B*27:08 by one amino acid change at codon 74.
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Affiliation(s)
- Z Gong
- HLA Laboratory, Beijing Red Cross Blood Center, Beijing, China
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Mei W, Du Z, Hu C, Wu G, Li Y, Luo C. e0114 Expression of pregnancy-association plasma protein A and inducible nitric oxide synthase in the wall of balloon injured and early atherosclerotic porcine coronary artery. Heart 2010. [DOI: 10.1136/hrt.2010.208967.114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Mei W, Zhang JX, Xiao Z. Acute effects of sublingual buprenorphine on brain responses to heroin-related cues in early-abstinent heroin addicts: an uncontrolled trial. Neuroscience 2010; 170:808-15. [PMID: 20678551 DOI: 10.1016/j.neuroscience.2010.07.033] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2010] [Revised: 07/15/2010] [Accepted: 07/15/2010] [Indexed: 11/15/2022]
Abstract
Replacement therapy with buprenorphine is clinically effective in reducing withdrawal and craving for heroin during detoxification but not in decreasing the probability of relapse after detoxification. This study examined the acute effects of buprenorphine on brain responses to heroin-related cues to reveal the neurobiological and therapeutic mechanisms of addiction and relapse. Fifteen heroin addicts at a very early period of abstinence, were studied in two separate periods 10-15 min apart: an early period (5-45 min) and a later period (60-105 min) after sublingual buprenorphine, roughly covering the onset and peak of buprenorphine plasma level. During both periods, fMRI scanning with heroin-related visual stimuli were performed followed by questionnaires. Under effect of buprenorphine, brain responses to heroin-related cues showed decrease in amygdala, hippocampus, ventral tegmental area (VTA) and thalamus but no changes in ventral striatum and orbital-prefrontal-parietal cortices. As an uncontrolled trial, these preliminary results suggest that buprenorphine has specific brain targets in reducing withdrawal and craving during early abstinence, and that ventral striatum and orbital-prefrontal-parietal cortices may be the key targets in developing therapy for drug addiction and relapse.
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Affiliation(s)
- W Mei
- Guangdong Key Lab of Medical Molecular Imaging and Department of Radiology, the First Affiliated Hospital of the Medical College of Shantou University, Shantou, PR China
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Mei W, Rong Y, Jinming L, Yongjun L, Hui Z. Effect of homocysteine interventions on the risk of cardiocerebrovascular events: a meta-analysis of randomised controlled trials. Int J Clin Pract 2010; 64:208-15. [PMID: 19912385 DOI: 10.1111/j.1742-1241.2009.02207.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
AIMS To evaluate the effects of homocysteine lowering intervention on the risk of cardiocerebrovascular events and all-cause mortality in randomised controlled trials among people with preexisting cardiocerebrovascular or renal disease. METHODS Studies were retrieved by searching MEDLINE and OVID (from January 1966 to December 2008) using the following keywords: homocysteine, hyperhomocysteinaemia, cardiovascular disease, coronary disease, cerebrovascular disease, B vitamins, folic acid, randomised controlled trial. References of all retrieved articles were also searched. Randomised controlled trials which compared folic acid or plus B vitamins supplementation with either placebo or usual care were evaluated with cardiocerebrovascular disease events or all-cause mortality reported as an end-point. Data on study design, characteristics of participants, changes in homocysteine levels, and cardiocerebrovascular events and all-cause mortality were independently abstracted by two investigators using a standardised protocol. RESULTS Seventeen trials involving 39,107 patients with preexisting cardiocerebrovascular or renal disease were included. Results of meta-analyses showed that no significant differences were identified between the intervention group and the control group. The overall relative risks (95% confidence intervals) of outcomes for patients treated with folic acid or plus B vitamins supplementation compared with controls were 1.01 (0.97-1.05) for cardiovascular events, 1.01 (0.94-1.07) for coronary heart disease, 0.94 (0.85-1.04) for stroke and 1.00 (0.95-1.05) for all-cause mortality. In the exclusion of low-quality trials and seven trials in grain fortification countries respectively, sensitivity analyses did not change the overall results. CONCLUSION There is no sufficient evidence to show that homocysteine lowering intervention can reduce the risk of cardiocerebrovascular diseases or all-cause mortality among people with preexisting vascular disease. Folic acid supplementation should not be recommended for the secondary prevention of cardiocerebrovascular diseases. More evidence from large-scale randomised controlled trials is needed to confirm this.
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Affiliation(s)
- W Mei
- Department of Cardiology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
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Hagens R, Mann T, Schreiner V, Barlag HG, Wenck H, Wittern KP, Mei W. Contact angle measurement ? a reliable supportive method for screening water-resistance of ultraviolet-protecting products in vivo. Int J Cosmet Sci 2007; 29:283-91. [DOI: 10.1111/j.1467-2494.2007.00380.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Aloisio A, Ambrosino F, Antonelli A, Antonelli M, Bacci C, Barva M, Bencivenni G, Bertolucci S, Bini C, Bloise C, Bocci V, Bossi F, Branchini P, Bulychjov S, Caloi R, Campana P, Capon G, Capussela T, Carboni G, Ceradini F, Cervelli F, Cevenini F, Chiefari G, Ciambrone P, Conetti S, De Lucia E, De Santis A, De Simone P, De Zorzi G, Dell'Agnello S, Denig A, Di Domenico A, Di Donato C, Di Falco S, Di Micco B, Doria A, Dreucci M, Erriquez O, Farilla A, Felici G, Ferrari A, Ferrer M, Finocchiaro G, Forti C, Franzini P, Gatti C, Gauzzi P, Giovannella S, Gorini E, Graziani E, Incagli M, Kluge W, Kulikov V, Lacava F, Lanfranchi G, Lee-Franzini J, Leone D, Lu F, Martemianov M, Martini M, Matsyuk M, Mei W, Merola L, Messi R, Miscetti S, Moulson M, Müller S, Murtas F, Napolitano M, Nguyen F, Palutan M, Pasqualucci E, Passalacqua L, Passeri A, Patera V, Perfetto F, Petrolo E, Pontecorvo L, Primavera M, Santangelo P, Santovetti E, Saracino G, Schamberger R, Sciascia B, Sciubba A, Scuri F, Sfiligoi I, Sibidanov A, Spadaro T, Spiriti E, Tabidze M, Testa M, Tortora L, Valente P, Valeriani B, Venanzoni G, Veneziano S, Ventura A, Versaci R, Villella I, Xu G. The hadronic cross section measurement at KLOE. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.nuclphysbps.2005.02.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Aloisio A, Ambrosino F, Antonelli A, Antonelli M, Bacci C, Bencivenni G, Bertolucci S, Bini C, Bloise C, Bocci V, Bossi F, Branchini P, Bulychjov S, Caloi R, Campana P, Capon G, Carboni G, Casarsa M, Casavola V, Cataldi G, Ceradini F, Cervelli F, Cevenini F, Chiefari G, Ciambrone P, Conetti S, De Lucia E, De Robertis G, De Simone P, De Zorzi G, Dell'Agnello S, Denig A, Di Domenico A, Di Donato C, Di Falco S, Doria A, Dreucci M, Erriquez O, Farilla A, Felici G, Ferrari A, Ferrer M, Finocchiaro G, Forti C, Franceschi A, Franzini P, Gatti C, Gauzzi P, Giovannella S, Gorini E, Grancagnolo F, Graziani E, Han S, Incagli M, Ingrosso L, Kluge W, Kuo C, Kulikov V, Lacava F, Lanfranchi G, Lee-Franzini J, Leone D, Lu F, Martemianov M, Matsyuk M, Mei W, Merola L, Messi R, Miscetti S, Moulson M, Müller S, Murtas F, Napolitano M, Nedosekin A, Nguyen F, Palutan M, Paoluzi L, Pasqualucci E, Passalacqua L, Passeri A, Patera V, Petrolo E, Pontecorvo L, Primavera M, Ruggieri F, Santangelo P, Santovetti E, Saracino G, Schamberger R, Sciascia B, Sciubba A, Scuri F, Sfiligoi I, Spadaro T, Spiriti E, Tong G, Tortora L, Valente E, Valente P, Valeriani B, Venanzoni G, Veneziano S, Ventura A, Xu G, Yu G. Measuring the hadronic cross section via radiative return. ACTA ACUST UNITED AC 2003. [DOI: 10.1016/s0920-5632(03)80178-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Mei W, Yang J, Tao Q, Geng X, Rupp RA, Ding X. An interferon regulatory factor-like binding element restricts Xmyf-5 expression in the posterior somites during Xenopus myogenesis. FEBS Lett 2001; 505:47-52. [PMID: 11557040 DOI: 10.1016/s0014-5793(01)02688-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The expression of myf-5, a key component of myogenic regulatory genes, declines progressively in mature somitic cells during vertebrate myogenesis. Little is known about how this down-regulation takes place. Here we provide evidence that an interferon regulatory factor binding element (IRF element) within the Xenopus myf-5 promoter is responsible for the elimination of myf-5 transcription in mature somitic mesoderm of Xenopus embryos. We show that this IRF element mediates the down-regulation of Xmyf-5 transcription in gastrula embryos, and can specifically interact with nuclear proteins of early neurula. Moreover, deletion of this IRF element results in the anterior expansion of reporter gene transcripts within somitic mesoderm in transgenic embryos. Our results, therefore, provide insight into how the negative control of Xmyf-5 expression takes place.
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Affiliation(s)
- W Mei
- Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, PR China
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Yimin C, Baohua K, Tieyan W, Xuejun H, Huan S, Yuren L, Lihui H, Ying C, Hua L, Wenhuan Y, Mei W, Jinying W, Yongmei Z, Qiusheng Y. Case-controlled study on relevant factors of adolescent sexual coercion in China. Contraception 2001; 64:77-80. [PMID: 11704082 DOI: 10.1016/s0010-7824(01)00230-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [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: 11/21/2022]
Abstract
This was a case-controlled study to determine factors related to sexual coercion among adolescent abortion seekers in China. We considered the abortion-seeking women who had experienced sexual coercion as the case group and the abortion-seeking women who had never experienced sexual coercion as the control group. The results of the study indicated that the factors more likely to be related to sexual coercion include lower educational level [odds ratio (OR) = 1.55], not living with parents (OR) = 1.57, floating population (OR = 1.63), beaten by her partner (OR = 2.87), abused by her partner (OR = 1.84), multiple partners (OR = 2.10), sex after excessive drinking (OR = 5.02), younger age at first intercourse (OR = 1.68), and large difference in age between men and women (OR = 2.02). The relevant factors most likely to be associated with sexual coercion are poorly educated, not living with parents, floating population, multiple partners, younger age at first sex, and inequality between men and women.
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Affiliation(s)
- C Yimin
- National Research Institute for Family Planning, Beijing 100081, People's Republic of China.
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Liu J, Mei W, Li Y, Wang E, Ji L, Tao P. Antiviral activity of mixed-valence rare earth borotungstate heteropoly blues against influenza virus in mice. Antivir Chem Chemother 2000; 11:367-72. [PMID: 11227994 DOI: 10.1177/095632020001100603] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [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: 11/16/2022] Open
Abstract
The acute and accumulated toxicity of the rare earth borotungstate heteropoly blues, HPB-2, Ce2H3[BW9(VI)W2(V)Mn(H2O)O39].12H2O, which is active against influenza virus in Kunming mice, were investigated in Kunming mice following oral and intraperitoneal administration. The activity of HPB-2 against influenza virus (FM1) in the mice was then investigated. HPB-2, given either orally (p.o.) or intraperitoneally (i.p.), was shown to have activity. HPB-2 was shown to be more effective than the positive control, ribavirin, and it was also found that i.p. administration was more effective than p.o. administration.
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Affiliation(s)
- J Liu
- State Key Laboratory of Ultrafast Laser Spectroscopy/Department of Chemistry, Zhongshan University, Guangzhou, PR China.
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28
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Hoppe U, Bergemann J, Diembeck W, Ennen J, Gohla S, Harris I, Jacob J, Kielholz J, Mei W, Pollet D, Schachtschabel D, Sauermann G, Schreiner V, Stäb F, Steckel F. Coenzyme Q10, a cutaneous antioxidant and energizer. Biofactors 1999; 9:371-8. [PMID: 10416055 DOI: 10.1002/biof.5520090238] [Citation(s) in RCA: 121] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The processes of aging and photoaging are associated with an increase in cellular oxidation. This may be in part due to a decline in the levels of the endogenous cellular antioxidant coenzyme Q10 (ubiquinone, CoQ10). Therefore, we have investigated whether topical application of CoQ10 has the beneficial effect of preventing photoaging. We were able to demonstrate that CoQ10 penetrated into the viable layers of the epidermis and reduce the level of oxidation measured by weak photon emission. Furthermore, a reduction in wrinkle depth following CoQ10 application was also shown. CoQ10 was determined to be effective against UVA mediated oxidative stress in human keratinocytes in terms of thiol depletion, activation of specific phosphotyrosine kinases and prevention of oxidative DNA damage. CoQ10 was also able to significantly suppress the expression of collagenase in human dermal fibroblasts following UVA irradiation. These results indicate that CoQ10 has the efficacy to prevent many of the detrimental effects of photoaging.
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Affiliation(s)
- U Hoppe
- Paul Gerson Unna Research Center, Beiersdorf AG, Hamburg, Germany
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29
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Arnott SJ, Duncan W, Gignoux M, Girling DJ, Hansen HS, Launois B, Nygaard K, Parmar MK, Roussel A, Spiliopoulos G, Stewart LA, Tierney JF, Mei W, Rugang Z. Preoperative radiotherapy in esophageal carcinoma: a meta-analysis using individual patient data (Oesophageal Cancer Collaborative Group). Int J Radiat Oncol Biol Phys 1998; 41:579-83. [PMID: 9635705 DOI: 10.1016/s0360-3016(97)00569-5] [Citation(s) in RCA: 119] [Impact Index Per Article: 4.6] [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: 02/07/2023]
Abstract
PURPOSE The existing randomized evidence has failed to conclusively demonstrate the benefit or otherwise of preoperative radiotherapy in treating patients with potentially resectable esophageal carcinoma. This meta-analysis aimed to assess whether there is benefit from adding radiotherapy prior to surgery. METHODS AND MATERIALS This quantitative meta-analysis included updated individual patient data from all properly randomized trials (published or unpublished) comprising 1147 patients (971 deaths) from five randomized trials. RESULTS With a median follow-up of 9 years, the hazard ratio (HR) of 0.89 (95% CI 0.78-1.01) suggests an overall reduction in the risk of death of 11% and an absolute survival benefit of 3% at 2 years and 4% at 5 years. This result is not conventionally statistically significant (p = 0.062). No clear differences in the size of the effect by sex, age, or tumor location were apparent. CONCLUSION Based on existing trials, there was no clear evidence that preoperative radiotherapy improves the survival of patients with potentially resectable esophageal cancer. These results indicate that if such preoperative radiotherapy regimens do improve survival, then the effect is likely to be modest with an absolute improvement in survival of around 3 to 4%. Trials or a meta-analysis of around 2000 patients would be needed to reliably detect such an improvement (15-->20%).
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Abstract
A technique and the materials required for making laser glass are described. The technique includes cleaning glass plates, coating UV photopolymer materials onto the glass plates, attaching a master hologram to the plates, using exposure to UV light to cure the coating, screen printing, vacuum film depositing, and covering the plates with a protective coating. The UV photopolymer material is composed of a photoinitiator, a monomer, an oligomer, and other additives. The experimental results show that the laser-glass products have a high resistance to alkali, acid, heating, and UV irradiation.
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31
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Shen X, Mei W, Xu X. Activation of neutrophils by a chemically separated but optically coupled neutrophil population undergoing respiratory burst. Experientia 1994; 50:963-8. [PMID: 7957774 DOI: 10.1007/bf01923488] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Neutrophils from pig blood were used as a model system to investigate the optical communication between cells. It was found that neutrophils stimulated to undergo respiratory burst can activate a second, chemically separated, but optically coupled population of neutrophils. The response of the latter was visualized as a temporary rising of their low-level chemiluminescence and an enhanced generation of superoxide radicals detected by both the reduction of ferricytochrome c and spin trapping. The results provide evidence that a long-range optical coupling of biological significance between living cells exists.
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Affiliation(s)
- X Shen
- Institute of Biophysics, Chinese Academy of Sciences, Chaoyong District, Beijing
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32
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Abstract
In this work, the light-induced photon emission (IPE) by suspensions of mammalian cells was examined. IPE is extremely low and for detection in a single photon counting device with a cooled EMI 9558QB photomultiplier tube was used. The mammalian cells in this study were from different tissues and different mammalian species including cat, Chinese hamster, cow, dog, human, monkey, mouse and rat. The IPE was detected in all mammalian cells tested, but was different for the various cell types, ranging from 4 to 100 photons per 10(4) cells. Although our data agree with previous studies in that the IPE of non-fibroblastic normal cells is distinct from that of malignant cells our results reveal that cells of fibroblastic origin show the highest IPE values.
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Affiliation(s)
- R van Wijk
- Department of Molecular Cell Biology, State University, Utrecht, Netherlands
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Abstract
Since hair Zn and serum Zn are usually decreased in cancer patients, and Zn deficiency may reduce the function of T-cells, granulocytes, and Nk cells, we observed in cancer patients the influences of the Zinc or Selenium-Zinc on DNCB skin delayed hypersensitivity mediated by T cell, and the effects of Zinc on oxidative metabolic function of neutrophils and level of serum interferon that potentiate NK cell activity. The results showed that DNCB skin reaction was strengthened, the oxidative metabolic function of neutrophils and serum interferon level were increased by the drugs. It is reasonable to expect that Zinc or Selenium-Zinc is instrumental in restoring failing immunocompetence of cancer patient.
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Affiliation(s)
- W Mei
- Oncological Institute of Anhui Medical University, Hefei, China
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Edwardson PJ, Boyer LL, Newman RL, Fox DH, Hardy JR, Flocken JW, Guenther RA, Mei W. Ferroelectricity in perovskitelike NaCaF3 predicted ab initio. Phys Rev B Condens Matter 1989; 39:9738-9741. [PMID: 9947742 DOI: 10.1103/physrevb.39.9738] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [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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35
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Mei W, Yang K, Jia ZL. [Pathogenetic analysis of 28 cases of aplastic anemia]. Zhonghua Nei Ke Za Zhi 1986; 25:461-4, 509-10. [PMID: 3803060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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