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Hu RD, Zhu WL, Lin WY, Qiu YH, Wu GL, Ding XY, Yang ZK, Feng Q, Zhang RR, Qiao LJ, Cai YF, Zhang SJ. Ethanol extract of Evodia lepta Merr. ameliorates cognitive impairment through inhibiting NLRP3 inflammasome in scopolamine-treated mice. Aging (Albany NY) 2024; 16:2385-2397. [PMID: 38284892 PMCID: PMC10911362 DOI: 10.18632/aging.205486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 12/18/2023] [Indexed: 01/30/2024]
Abstract
Evodia lepta Merr. (Evodia lepta) is a well-known traditional Chinese medicine, which has been widely used in herbal tea. We previously reported that the coumarin compounds from the root of Evodia lepta exhibited neuroprotective effects. However, whether Evodia lepta could inhibit NLRP3 inflammasome in dementia was still unknown. In this study, the components of the Evodia lepta extract were identified by HPLC-Q-TOF HRMS. We employed a scopolamine-treated mouse model. Evodia lepta extract (10 or 20 mg/kg) and donepezil were treated by gavage once a day for 14 consecutive days. Following the behavioral tests, oxidative stress levels were measured. Then, Western blot and immunofluorescence analysis were used to evaluate the expressions of NLRP3 inflammasome. 14 major components of the Evodia lepta extract were identified by HPLC-Q-TOF HRMS. The results of Morris water maze, object recognition task and open field test indicated that Evodia lepta extract could ameliorate cognitive impairment in scopolamine-treated mice. Evodia lepta extract improved cholinergic system. Moreover, Evodia lepta extract improved the expressions of PSD95 and BDNF. Evodia lepta extract suppressed neuronal oxidative stress and apoptosis. In addition, Evodia lepta extract inhibited NLRP3 inflammasome in the hippocampus of scopolamine-treated mice. Evodia lepta extract could protect against cognitive impairment by inhibiting NLRP3 inflammasome in scopolamine-treated mice.
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Affiliation(s)
- Rui-Dan Hu
- State Key Laboratory of Traditional Chinese Medicine Syndrome, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
- Guangdong Provincial Key Laboratory of Translational Cancer Research of Chinese Medicines, Joint International Research Laboratory of Translational Cancer Research of Chinese Medicines, International Institute for Translational Chinese Medicine, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510330, China
| | - Wen-Li Zhu
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510000, China
- Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510435, China
- Department of Gastroenterology, Shenzhen Traditional Chinese Medicine Hospital Affiliated to Nanjing University of Chinese Medicine, Shenzhen, China
| | - Wei-Yao Lin
- Guangdong Provincial Key Laboratory of Translational Cancer Research of Chinese Medicines, Joint International Research Laboratory of Translational Cancer Research of Chinese Medicines, International Institute for Translational Chinese Medicine, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510330, China
| | - Yu-Hui Qiu
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510000, China
- Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510435, China
| | - Guang-Liang Wu
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510000, China
- Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510435, China
| | - Xiao-Ying Ding
- Guangdong Provincial Key Laboratory of Translational Cancer Research of Chinese Medicines, Joint International Research Laboratory of Translational Cancer Research of Chinese Medicines, International Institute for Translational Chinese Medicine, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510330, China
| | - Zhen-Kun Yang
- Guangdong Provincial Key Laboratory of Translational Cancer Research of Chinese Medicines, Joint International Research Laboratory of Translational Cancer Research of Chinese Medicines, International Institute for Translational Chinese Medicine, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510330, China
| | - Qian Feng
- Guangdong Provincial Key Laboratory of Translational Cancer Research of Chinese Medicines, Joint International Research Laboratory of Translational Cancer Research of Chinese Medicines, International Institute for Translational Chinese Medicine, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510330, China
| | - Rong-Rong Zhang
- Guangdong Provincial Key Laboratory of Translational Cancer Research of Chinese Medicines, Joint International Research Laboratory of Translational Cancer Research of Chinese Medicines, International Institute for Translational Chinese Medicine, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510330, China
| | - Li-Jun Qiao
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510000, China
- Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510435, China
| | - Ye-Feng Cai
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510000, China
- Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510435, China
| | - Shi-Jie Zhang
- State Key Laboratory of Traditional Chinese Medicine Syndrome, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510000, China
- Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510435, China
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Liu XQ, Hu T, Wu GL, Qiao LJ, Cai YF, Wang Q, Zhang SJ. Tanshinone IIA, the key compound in Salvia miltiorrhiza, improves cognitive impairment by upregulating Aβ-degrading enzymes in APP/PS1 mice. Int J Biol Macromol 2024; 254:127923. [PMID: 37944734 DOI: 10.1016/j.ijbiomac.2023.127923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/04/2023] [Accepted: 11/04/2023] [Indexed: 11/12/2023]
Abstract
In Alzheimer's disease (AD), amyloid-beta (Aβ) plays a crucial role in pathogenesis. Clearing Aβ from the brain is considered as a key therapeutic strategy. Previous studies indicated that Salvia miltiorrhiza (Danshen) could protect against AD. However, the main anti-AD components in Danshen and their specific mechanisms are not clear. In this study, pharmacological network analysis indicated that Tanshinone IIA (Tan IIA) was identified as the key active compound in Danshen contributing to protect against AD. Then, APP/PS1 double transgenic mice were employed to examine the neuroprotective effect of Tan IIA. APP/PS1 mice (age, 6 months) were administered (10 and 20 mg/kg) for 8 weeks. Tan IIA improved learning and anxiety behaviors in APP/PS1 mice. Furthermore, Tan IIA reduced oxidative stress, inhibited neuronal apoptosis, improved cholinergic nervous system and decreased endoplasmic reticulum stress in the brain of APP/PS1 mice. Moreover, Tan IIA treatment reduced the level of Aβ. Molecular docking result showed that Tan IIA might block AD by upregulating Aβ-degrading enzymes. Western blot results confirmed that the expressions of insulin degrading enzymes (IDE) and neprilysin (NEP) were significantly increased after Tan IIA treatment, which demonstrated that Tan IIA improved AD by increasing Aβ-degrading enzymes.
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Affiliation(s)
- Xiao-Qi Liu
- State Key Laboratory of Traditional Chinese Medicine Syndrome, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China; Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China; Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510405, China; Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Tian Hu
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China; Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510405, China
| | - Guang-Liang Wu
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China; Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510405, China
| | - Li-Jun Qiao
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China; Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510405, China
| | - Ye-Feng Cai
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China; Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510405, China.
| | - Qi Wang
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China.
| | - Shi-Jie Zhang
- State Key Laboratory of Traditional Chinese Medicine Syndrome, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China; Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China; Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510405, China.
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Tan HY, Wan C, Wu GL, Qiao LJ, Cai YF, Wang Q, Zhang SJ. Taohong siwu decoction ameliorates cognitive dysfunction through SIRT6/ER stress pathway in Alzheimer's disease. J Ethnopharmacol 2023; 314:116580. [PMID: 37142144 DOI: 10.1016/j.jep.2023.116580] [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] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 04/29/2023] [Accepted: 05/01/2023] [Indexed: 05/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE A growing number of people suffer from Alzheimer's disease (AD), but there is currently no effective treatment yet. Taohong Siwu Decoction (TSD) has been proved to take strong neuropharmacological activity on dementia, but the effect and mechanism of TSD against AD are still elusive. AIM OF STUDY To investigate whether TSD could be effective in ameliorating cognitive deficits through SIRT6/ER stress pathway. MATERIALS AND METHODS Herein, the APP/PS1 mice, an AD model, and HT-22 cell lines were utilized. Different dosages of TSD (4.25, 8.50 and 17.00 g/kg/d) were administered to the mice for 10 weeks by gavage. Following the behavioral tests, oxidative stress levels were measured using malondialdehyde (MDA) and superoxide dismutase (SOD) kits. Nissl staining and Western blot analyses were used to detect the neuronal function. Then, immunofluorescence and Western blot analysis were applied to evaluate silent information regulator 6 (SIRT6) and ER Stress related protein levels in APP/PS1 mice and HT-22 cells. RESULTS Behavioral tests revealed that APP/PS1 mice administered with TSD orally took more time in the target quadrant, crossed more times in the target quadrant, had a higher recognition coefficient, and spent more time in the central region. In addition, TSD could ameliorate oxidative stress and inhibit neuronal apoptosis in APP/PS1 mice. Furthermore, TSD could up-regulate the SIRT6 protein expression and inhibit ER sensing proteins expressions, such as p-PERK and ATF6, in APP/PS1 mice and Aβ1-42-treated HT22 cells. CONCLUSION According to the abovementioned findings, TSD could alleviate cognitive dysfunction in AD by modulating the SIRT6/ER stress pathway.
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Affiliation(s)
- Hong-Yu Tan
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China; Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China; Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Can Wan
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China; Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
| | - Guang-Liang Wu
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China; Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
| | - Li-Jun Qiao
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China; Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
| | - Ye-Feng Cai
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China; Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China; Postdoctoral Research Station of Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China.
| | - Qi Wang
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China.
| | - Shi-Jie Zhang
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China; Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China; Postdoctoral Research Station of Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China.
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Ma HH, Wen JR, Fang H, Su S, Wan C, Zhang C, Lu FM, Fan LL, Wu GL, Zhou ZY, Qiao LJ, Zhang SJ, Cai YF. Hydroxysafflor Yellow A Exerts Neuroprotective Effect by Reducing Aβ Toxicity Through Inhibiting Endoplasmic Reticulum Stress in Oxygen-Glucose Deprivation/Reperfusion Cell Model. Rejuvenation Res 2023; 26:57-67. [PMID: 36734410 DOI: 10.1089/rej.2022.0054] [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: 02/04/2023] Open
Abstract
Ischemia stroke is thought to be one of the vascular risks associated with neurodegenerative diseases, such as Alzheimer's disease (AD). Hydroxysafflor yellow A (HSYA) has been reported to protect against stroke and AD, while the underlying mechanism remains unclear. In this study, SH-SY5Y cell model treated with oxygen-glucose deprivation/reperfusion (OGD/R) was used to explore the potential mechanism of HSYA. Results from cell counting kit-8 (CCK-8) showed that 10 μM HSYA restored the cell viability after OGD 2 hours/R 24 hours. HSYA reduced the levels of malondialdehyde and reactive oxygen species, while improved the levels of superoxide dismutase and glutathione peroxidase. Furthermore, apoptosis was inhibited, and the expression of brain-derived neurotrophic factor was improved after HSYA treatment. In addition, the expression levels of amyloid-β peptides (Aβ) and BACE1 were decreased by HSYA, as well as the expression levels of binding immunoglobulin heavy chain protein, PKR-like endoplasmic reticulum (ER) kinase pathway, and activating transcription factor 6 pathway, whereas the expression level of protein disulfide isomerase was increased. Based on these results, HSYA might reduce Aβ toxicity after OGD/R by interfering with apoptosis, oxidation, and neurotrophic factors, as well as relieving ER stress.
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Affiliation(s)
- Hui-Han Ma
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
| | - Jun-Ru Wen
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
| | - Hao Fang
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
| | - Shan Su
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
- College of Basic Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Can Wan
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
| | - Chao Zhang
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
| | - Fang-Mei Lu
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
- Department of Neurology, Henan University of Chinese Medicine, Zhengzhou, China
| | - Ling-Ling Fan
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Guang-Liang Wu
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
| | - Zi-Yi Zhou
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
| | - Li-Jun Qiao
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
| | - Shi-Jie Zhang
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
| | - Ye-Feng Cai
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
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Wan C, Liu XQ, Chen M, Ma HH, Wu GL, Qiao LJ, Cai YF, Zhang SJ. Tanshinone IIA ameliorates Aβ transendothelial transportation through SIRT1-mediated endoplasmic reticulum stress. J Transl Med 2023; 21:34. [PMID: 36670462 PMCID: PMC9854034 DOI: 10.1186/s12967-023-03889-y] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Accepted: 01/12/2023] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND The disruption of blood-brain barrier (BBB), predominantly made up by brain microvascular endothelial cells (BMECs), is one of the characteristics of Alzheimer's disease (AD). Thus, improving BMEC function may be beneficial for AD treatment. Tanshinone IIA (Tan IIA) has been proved to ameliorate the cognitive dysfunction of AD. Herein, we explored how Tan IIA affected the function of BMECs in AD. METHODS Aβ1-42-treated brain-derived endothelium cells.3 (bEnd.3 cells) was employed for in vitro experiments. And we performed molecular docking and qPCR to determine the targeting molecule of Tan IIA on Sirtuins family. The APPswe/PSdE9 (APP/PS1) mice were applied to perform the in vivo experiments. Following the behavioral tests, protein expression was determined through western blot and immunofluorescence. The activities of oxidative stress-related enzymes were analyzed by biochemically kits. Nissl staining and thioflavin T staining were conducted to reflect the neurodegeneration and Aβ deposition respectively. RESULTS Molecular docking and qPCR results showed that Tan IIA mainly acted on Sirtuin1 (SIRT1) in Sirtuins family. The inhibitor of SIRT1 (EX527) was employed to further substantiate that Tan IIA could attenuate SIRT1-mediated endoplasmic reticulum stress (ER stress) in BMECs. Behavioral tests suggested that Tan IIA could improve the cognitive deficits in APP/PS1 mice. Tan IIA administration increased SIRT1 expression and alleviated ER stress in APP/PS1 mice. In addition, LRP1 expression was increased and RAGE expression was decreased after Tan IIA administration in both animals and cells. CONCLUSION Tan IIA could promote Aβ transportation by alleviating SIRT1-mediated ER stress in BMECs, which ameliorated cognitive deficits in APP/PS1 mice.
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Affiliation(s)
- Can Wan
- grid.411866.c0000 0000 8848 7685Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, 510405 Guangzhou, China ,grid.413402.00000 0004 6068 0570Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, 510120 Guangzhou, China ,grid.9227.e0000000119573309Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, 518055 Shenzhen, China
| | - Xiao-Qi Liu
- grid.411866.c0000 0000 8848 7685Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, 510405 Guangzhou, China ,grid.413402.00000 0004 6068 0570Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, 510120 Guangzhou, China
| | - Mei Chen
- grid.411866.c0000 0000 8848 7685Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, 510405 Guangzhou, China ,grid.413402.00000 0004 6068 0570Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, 510120 Guangzhou, China
| | - Hui-Han Ma
- grid.411866.c0000 0000 8848 7685Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, 510405 Guangzhou, China ,grid.413402.00000 0004 6068 0570Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, 510120 Guangzhou, China
| | - Guang-Liang Wu
- grid.411866.c0000 0000 8848 7685Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, 510405 Guangzhou, China ,grid.413402.00000 0004 6068 0570Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, 510120 Guangzhou, China
| | - Li-Jun Qiao
- grid.411866.c0000 0000 8848 7685Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, 510405 Guangzhou, China ,grid.413402.00000 0004 6068 0570Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, 510120 Guangzhou, China
| | - Ye-Feng Cai
- grid.411866.c0000 0000 8848 7685Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, 510405 Guangzhou, China ,grid.413402.00000 0004 6068 0570Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, 510120 Guangzhou, China
| | - Shi-Jie Zhang
- grid.411866.c0000 0000 8848 7685Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, 510405 Guangzhou, China ,grid.413402.00000 0004 6068 0570Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, 510120 Guangzhou, China
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Abstract
BACKGROUND As an infectious disease caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the common signs of coronavirus disease 2019 (COVID-19) are respiratory symptoms, fever, cough, shortness of breath, and dyspnea, with multiple organ injuries in severe cases. Therefore, finding drugs to prevent and treat COVID-19 is urgently needed and expected by the public. Several studies suggested beneficial effects of melatonin for the relevant prevention and treatment. To explore the effect and safety of melatonin in the treatment and provide theoretical support and reference for seeking the most suitable drug for COVID-19, the meta-analysis was carried out accordingly. METHODS It included randomized clinical trials of patients with COVID-19 treated with melatonin. Total effective rate was the primary outcome, while C-reactive protein (CRP), arterial oxygen saturation (SaO2), white blood cell count (WBC) were the secondary measures. Random-effect and fixed-effect models were used to evaluate the effect size of some indicators in this meta-analysis. RESULTS Six eligible studies with 338 participants were included. One hundred seventy subjects were treated with melatonin adjuvant therapy and 168 subjects were assigned to the control group, with total excellent effective rate in subjects treated with melatonin [odds ratio = 3.05, 95 % confidence interval (CI) = 1.47, 6.31, P = .003]. Homogeneity was analyzed by fixed effect model (I2 = 0%). There was no significant difference in CRP between the melatonin group and the control group (weighted mean difference [WMD] = -0.36, 95% CI = -3.65, 2.92, P = .83). Significant difference was not existed in SaO2 between the melatonin treatment group and the control group (WMD = 1, 95% CI = -1.21, 3.22, P = .37). In terms of WBC, there was no significant difference between the 2 groups (WMD = -1.07, 95% CI = -2.44, 0.30, P = .13). CONCLUSIONS The meta-analysis showed that melatonin had the beneficial effects for COVID-19 prevention and treatment as an adjunctive agent in combination with basic treatment for the treatment.
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Affiliation(s)
- Xin-Chen Wang
- School of Food and Pharmaceutical Engineering, Zhaoqing College, Duanzhou District, Zhaoqing City, China
| | - Guang-Liang Wu
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
| | - Ye-Feng Cai
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
- *Correspondence: Ye-Feng Cai, Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510120, China (e-mail: )
| | - Shi-Jie Zhang
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
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Abstract
With the average life span of humans on the rise, aging in the world has drawn considerable attentions. The monoamine neurotransmitters and neurotrophic factors in brain areas are involved in learning and memory processes and are an essential part of normal synaptic neurotransmission and plasticity. In the present study, the effect of Zhuang Jing Decoction (ZJD) on the learning and memory ability in aging rats was examined in vivo using Morris water maze. Furthermore, the levels of monoamine neurotransmitters and neurotrophic factors in brain were detected by high-performance liquid chromatography with a fluorescence detector and enzyme-linked immunosorbent assay, respectively. These data showed that oral administration with ZJD at the dose of 30 g·kg(-1) exerted an improved effect on learning and memory ability in aging rats. The results revealed that ZJD could effectively adjust the monoamine neurotransmitters and neurotrophic factors, restore the balance of the level of monoamine neurotransmitters and neurotrophic factors in brain, and finally attenuate the degeneration of learning and memory ability. These findings suggested that ZJD might be a potential agent as cognitive-enhancing drug in improving learning and memory ability. It may exert through regulating the levels of monoamine neurotransmitters and neurotrophic factors in brain, which demonstrated that ZJD had certain antiaging effects.
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Affiliation(s)
- Hao-Bin Cai
- 1 Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine , Guangzhou, China
- 2 Second Clinical Medical College, Guangzhou University of Chinese Medicine , Guangzhou, China
| | - Guang-Liang Wu
- 2 Second Clinical Medical College, Guangzhou University of Chinese Medicine , Guangzhou, China
| | - Cen-Han Huang
- 3 Youjiang Medical University for Nationalities , Baise, China
| | - Zhong-Shi Huang
- 3 Youjiang Medical University for Nationalities , Baise, China
| | - Yun-Bo Chen
- 1 Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine , Guangzhou, China
| | - Qi Wang
- 1 Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine , Guangzhou, China
- 2 Second Clinical Medical College, Guangzhou University of Chinese Medicine , Guangzhou, China
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Li XR, Wakeel A, Huang TL, Wu GL, Huang X. Recrystallization textures and microstructures of Al-0.3%Cu alloy after deformation to high strains. ACTA ACUST UNITED AC 2015. [DOI: 10.1088/1757-899x/89/1/012032] [Citation(s) in RCA: 4] [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: 11/12/2022]
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Zhang XY, Shen BR, Zhang YC, Wan XJ, Yao QP, Wu GL, Wang JY, Chen SG, Yan ZQ, Jiang ZL. Induction of thoracic aortic remodeling by endothelial-specific deletion of microRNA-21 in mice. PLoS One 2013; 8:e59002. [PMID: 23527070 PMCID: PMC3601125 DOI: 10.1371/journal.pone.0059002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Accepted: 02/08/2013] [Indexed: 12/22/2022] Open
Abstract
MicroRNAs (miRs) are known to have an important role in modulating vascular biology. MiR21 was found to be involved in the pathogenesis of proliferative vascular disease. The role of miR21 in endothelial cells (ECs) has well studied in vitro, but the study in vivo remains to be elucidated. In this study, miR21 endothelial-specific knockout mice were generated by Cre/LoxP system. Compared with wild-type mice, the miR21 deletion in ECs resulted in structural and functional remodeling of aorta significantly, such as diastolic pressure dropping, maximal tension depression, endothelium-dependent relaxation impairment, an increase of opening angles and wall-thickness/inner diameter ratio, and compliance decrease, in the miR21 endothelial-specific knockout mice. Furthermore, the miR21 deletion in ECs induced down-regulation of collagen I, collagen III and elastin mRNA and proteins, as well as up-regulation of Smad7 and down-regulation of Smad2/5 in the aorta of miR21 endothelial-specific knockout mice. CTGF and downstream MMP/TIMP changes were also identified to mediate vascular remodeling. The results showed that miR21 is identified as a critical molecule to modulate vascular remodeling, which will help to understand the role of miR21 in vascular biology and the pathogenesis of vascular diseases.
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Affiliation(s)
- Xing-Yi Zhang
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Bao-Rong Shen
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Yu-Cheng Zhang
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Xue-Jiao Wan
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Qing-Ping Yao
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Guang-Liang Wu
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Ji-Yao Wang
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Si-Guo Chen
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Zhi-Qiang Yan
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China
- * E-mail:
| | - Zong-Lai Jiang
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China
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10
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Xie JJ, Gu L, Chen Q, Wu GL, Yan Y, Su L. [Correlation study on 12p13 single nucleotide polymorphism rs12425791 and Chinese medical syndrome types in ischemic stroke patients of the Han nationality]. Zhongguo Zhong Xi Yi Jie He Za Zhi 2013; 33:47-50. [PMID: 23596786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
OBJECTIVE To explore the correlation between 12p13 single nucleotide polymorphism (SNP) rs12425791 and Chinese medical syndrome types of ischemic stroke patients of the Han nationality. METHODS A case-control study was used. Recruited were 148 ischemic stroke patients of the Han nationality (67 patients of phlegm syndrome and 81 patients of blood stasis syndrome). Another 192 healthy subjects were recruited as the control group. The genotypes of rs12425791 were performed by TaqMan SNP genotyping assays to analyze the distribution of genes and the distribution frequency of alleles. RESULTS There was no statistical difference in the genotype and alleles of rs12425791 between the ischemic stroke patients of phlegm syndrome and the control group, or between the ischemic stroke patients of blood stasis syndrome and the control group (P > 0.05). CONCLUSION Our results did not support that 12p13 common variant rs12425791 was correlated with the pathogeneses of ischemic stroke patients of phlegm syndrome and ischemic stroke patients of blood stasis syndrome.
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Affiliation(s)
- Juan-Juan Xie
- College of Graduates, Guangxi University of Traditional Chinese Medicine, Nanning 530001), China
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11
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12
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Shen L, Zhang ZS, Wu HW, Weir RE, Xie ZW, Hu LS, Chen SZ, Ji MJ, Su C, Zhang Y, Bickle QD, Cousens SN, Taylor MG, Wu GL. IFN-gamma is associated with risk of Schistosoma japonicum infection in China. Parasite Immunol 2004; 25:483-7. [PMID: 15157025 DOI: 10.1111/j.1365-3024.2003.t01-1-00661.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [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: 11/29/2022]
Abstract
Before the start of the schistosomiasis transmission season, 129 villagers resident on a Schistosoma japonicum-endemic island in Poyang Lake, Jiangxi Province, 64 of whom were stool-positive for S. japonicum eggs by the Kato method and 65 negative, were treated with praziquantel. Forty-five days later the 93 subjects who presented for follow-up were all stool-negative. Blood samples were collected from all 93 individuals. S. japonicum soluble worm antigen (SWAP) and soluble egg antigen (SEA) stimulated IL-4, IL-5 and IFN-gamma production in whole-blood cultures were measured by ELISA. All the subjects were interviewed nine times during the subsequent transmission season to estimate the intensity of their contact with potentially infective snail habitats, and the subjects were all re-screened for S. japonicum by the Kato method at the end of the transmission season. Fourteen subjects were found to be infected at that time. There was some indication that the risk of infection might be associated with gender (with females being at higher risk) and with the intensity of water contact, and there was evidence that levels of SEA-induced IFN-gamma production were associated with reduced risk of infection.
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Affiliation(s)
- L Shen
- Molecular- and Immuno-parasitology Research Department, Nanjing Medical University, China, PR
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Wang Y, Su C, Zhang ZS, Hu XM, Shen L, Liu F, Wang RZ, Chen SZ, Li CL, Wu GL. [Clonning and identification of the gene encoding specific IgE antibody-related antigen of Schistosoma japonicum]. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2003; 19:272-5. [PMID: 12572040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
OBJECTIVE To obtain the gene encoding specific IgE-related antigen of Schistosoma japonicum from the cDNA library of adult Schistosoma japonicum. METHODS The pooled sera from 15 individuals with high levels of specific IgE antibody against SWAP were absorbed with Protein-G and used for screening of IgE-related antigen from the adult worm cDNA library of Schistosoma japonicum. The inserted cDNA was amplified by PCR and sequenced. According to the first reading frame of the sequence, a pair of new probes, in which EcoR I and Not I sites were incorporated respectively, were designed and used to amplify the target gene. Then, the gene was cloned into vector pGEM-T and subcloned into expression vector pGEX-6p-1. The fusion protein was expressed, analysed by SDS-PAGE and identified by Western blotting with the specific IgE antibody, respectively. RESULTS The inserted cDNA fragment from the positive clone was about 1,200 bp, with the ORF of 507 bp which encoded 169 amino acids. The deduced molecular weight of the recombinant protein was 19.3 kDa. The homology between the target gene (Sj43B) and other known DNA sequences was less than 40%. The fusion protein expressed by the recombinant vector pGEX-6p-1/Sj43B could be recognized by schistosome specific IgE antibody. CONCLUSION Sj43B may encode the specific IgE-related antigen of Schistosoma japonicum. The successful construction of recombinant plasmid pGEX-6p-1/Sj43B lay the groundwork for further studies on immunological characteristics and protection immunity of the recombinant protein.
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Affiliation(s)
- Y Wang
- Laboratory of Molecular Immunoparasitology, Institute of Molecular Biology for Medicine, Nanjing Medical University, Nanjing 210029
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Tian HS, Zhu CL, Gao XH, Ma L, Shen B, Li XL, Wu GL. [Cloning and identification of deltamethrin-resistance or susceptibility associated genes of Culex pipiens pallens]. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2003; 19:193-7. [PMID: 12571962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
OBJECTIVE To obtain deltamethrin-resistance or susceptibility associated genes of Culex pipiens pallens. METHODS The differentially expressed genes were obtained by suppression subtractive hybridization (SSH), and identified by cDNA microarray and reverse Northern blotting. RESULTS 523 and 286 clones were selected respectively in the two directional SSH. 155 and 42 genes were respectively expressed 2-3 and > 3 times higher in the insecticide-resistant strain than in the susceptible strain; 15 and 9 genes were respectively expressed 2-3 and > 3 times higher in the susceptible strain than in the resistant strain. There were 2 genes only expressed in the insecticide-resistant strain. 51 three times differentially expressed clones and 2 specially expressed clones were sequenced. 44 sequences were obtained which belong to 13 new genes. There were 8 over-expressed genes in resistant strain, 7 of which were similar respectively to mitochondrion rRNA gene, 60S ribosomal protein gene, 40S ribosomal protein S4 gene, trypsin gene, chymotrypsin A gene, ospin gene, and 16S ribosomal RNA gene. There were 5 over-expressed genes in susceptible strain, 2 of them being similar with 40S ribosomal protein S29 gene and myosin regulatory light chain 2 gene. In addition, 2 genes specially expressed in resistant strain were similar respectively to glycogen branching enzyme gene and ribosomal protein 46 gene. CONCLUSION The differentially expressed genes may be associated with deltamethrin-resistance or susceptibility of Culex pipiens pallens.
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Affiliation(s)
- H S Tian
- Department of Pathobiology and Immunology, Nanjing Medical University, Nanjing 210029
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Hu XM, Wu HW, Zhang ZS, Su C, Zhao W, Ma L, Zhou JL, Wu GL. [Analysis of the mitochondria-related protein of Schistosoma japonicum and its antigen epitopes]. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2003; 19:19-21. [PMID: 12572017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
OBJECTIVE To sequence the cloned gene Sj338 and to identify the encoded protein and its antigen epitopes. METHODS The Sj338 gene fragment obtained from adult S. japonicum cDNA library amplified by PCR method was subcloned into pGEM-T vector for sequencing. The sequence of nucleotides and the characteristics of the encoded protein were analyzed by DNASIS Program and Goldkey DNA and Protein Analytical Program, and then the homology of the amino acid sequence was searched on the BLAST net. RESULTS The cloned rSj338 gene was demonstrated to be 487 bp containing one 459 bp ORF, encoding a protein consisted of 153 amino acids with a molecular weight of 17.6 kDa. The amino acid sequence of the recombinant protein rSj338 shared 46% identity with that of the corresponding part of human mitochondrial import receptor and 44% identity with that of the Rattus sp. mitochondrial precursor receptor. The possible antigen epitopes were predicted within the peptide fragments of 26-32 aa, 37-46 aa and 147-151 aa. CONCLUSION The protein encoded by rSj338 gene fragment might be the mitochondria-related protein of Schistosoma japonicum.
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Affiliation(s)
- X M Hu
- Institute of Medical Molecular Biology, Nanjing Medical University, Nanjing 210029
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16
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Shen L, Wu HW, Zhang ZS, Weir RE, Xie ZW, Hu LS, Chen SZ, Taylor MG, Wu GL. [Human parasite antigen-specific IFN-gamma response in schistosomitsis japonica endemic area]. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2003; 18:132-4. [PMID: 12567684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
OBJECTIVE To explore the characteristics of human schistosome antigen-specific IFN-gamma response in a population in an area endemic for schistosomiasis japonica. METHODS Three neighboring villages were chosen on Nanshan Island of Poyang Lake. 65 egg-negative persons and 64 egg-positive ones were selected randomly from the residents aged 14-41 years according to the egg counts by Kato-Katz thick smear method. IFN-gamma was measured in the whole blood culture supernatant after stimulated by the schistosome soluble egg antigen (SEA) and soluble worm antigen preparations (SWAP). Serum isotype-restricted antibody was detected by ELISA. RESULTS IFN-gamma levels induced by both SEA and SWAP were increased significantly after praziquantel treatment. The SEA-specific IFN-gamma level of the uninfected group was much higher than that of the reinfected group. A negative correlation between IFN-gamma level and IgG4 production was found, reflecting that IFN-gamma might be associated with the resistance to schistosome reinfection. CONCLUSION The changes in IFN-gamma level might play an important role in association with the resistance to schistosome reinfection.
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Affiliation(s)
- L Shen
- Molecular and Immunoparasitology Research Department, Nanjing Medical University, Nanjing 210029
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17
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Shen L, Wu HW, Zhang ZS, Weir R, Shao LJ, Xie ZW, Hu LS, Chen SZ, Su C, Zhang T, Taylor MG, Wu GL. [Studies on human cytokine responses before and after praziquantel chemotherapy in an endemic area of schistosomiasis japonica]. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2003; 18:14-7. [PMID: 12567463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
OBJECTIVE To observe the cellular immune responses in a population of an endemic area of schistosomiasis japonica and the influence of praziquantel treatment. METHODS Blood was taken from 129 residents (64 cases were egg-positive, 65 cases were egg-negitive) of an endemic area of Poyang Lake before and 45 days after praziquantel treatment. Cytokines induced by the schistosome soluble egg antigen (SEA) and soluble worm antigen preparations (SWAP) in the peripheral blood cells including IL-5, IL-10 and IFN-gamma were measured. RESULTS Among 129 cases, the cytokine levels were found much higher in egg negative individuals than in egg-positive individuals. The cytokine levels induced by both antigens were increased significantly after praziqantel treatment especially IL-5 and IFN-gamma. CONCLUSION The cellular immune responses in the population in schistosomiasis japonica endemic area exhibited a general trend of down-regulation and were elevated significantly after praziquantel treatment.
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Affiliation(s)
- L Shen
- Laboratory of Molecular and Immuno-Parasitology, Nanjing Medical University, Nanjing, 210029
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Hu XM, Wu HW, Zhang ZS, Su C, Zhao W, Shen L, Wang RZ, Ma L, Zhou JL, Chen SZ, Wu GL. [Gene cloning and characterization of mitochondria-related protein of Schistosoma japonicum]. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2003; 18:220-3. [PMID: 12567664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
OBJECTIVE To subclone and characterize a cDNA clone coding for Schistosoma japonicum (S.j.) mitochondria-related protein. METHODS The open reading frame of the fragment(Sj338/24) obtained from an adult worm cDNA library of S.j. was analysed, at the upstream and downstream of the open reading frame(ORF) the primers A and B were designed, respectively, and the cDNA fragment was used as PCR template. The Sj338 gene fragment obtained was amplified by PCR method and then subcloned into pGEM-T vector for sequencing. The gene sequence was analyzed and the target fragment was restrictedly digested and subcloned into expression vector pGEX-6P-1. The expressed recombinant protein was purified and characterized. RESULTS The cloned Sj338 gene was demonstrated to be 487 bp long containing one 459 bp ORF, encoding a protein with a molecular weight of 17 kDa. The nucleotide sequence of the cloned gene Sj338 had higher homology with those genes coding for mitochondrial outer membrane protein of Homo sapiens and Rattus norvegicus. The recombinant construct of pGEX-6P-1/Sj338 could be expressed efficiently and the antigenicity of its product rSj338 has been demonstrated by Western blotting. CONCLUSION Sj338 may be the gene coding for S.j. mitochondria-related protein and the recombinant protein may be used as a new vaccine candidate.
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Affiliation(s)
- X M Hu
- Department of Parasitology, Binzhou Medical College, Binzhou 256603
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19
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Zhu CL, Li JM, Tian HS, Ma L, Li XL, Wu GL. [Cloning and identification of cytochrome P450 resistance related genes in the mosquito, Culex pipiens pallens]. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2003; 18:263-8. [PMID: 12567630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
OBJECTIVE To inquire into the relationship between cytochrome P450 and deltamethrin resistance. METHODS 24 new cDNA sequences encoding cytochrome P450 were amplified respectively from deltamethrin-susceptible and -resistant strains of Culex pipiens pallens with a pair of degenerate primers according to the conservative amino acid sequences of CYP4 in insects by RT-PCR and the Direct Cloning Method, and then were identified by cDNA chip and reverse Northern. RESULTS 112 positive clones were obtained, of which 24 were shown to be new sequences encoded for cytochrome P450. They have been lodged in GenBank and were appraised by the Nomenclature Committee of Cytochrome P450, belonging to the subfamily CYP4C, CYP4D, CYP4H and CYP4J in CYP4 family. The hybrid signal values of 6 P450 sequences (NYDS3, NYDS5, NYDR6, NYDR9, NYDR15 and NYDR17) were 3.1-9.7 times higher in the resistance probe than in the susceptible probe, and NYDR17 only reacted with the resistance probe. The result of reverse Northern in NYDR15 was similar to that of cDNA chip. CONCLUSION CYP4 is related to deltamethrin resistance and the specific expression caused by point mutation of cytochrome P450 gene may exist in deltamethrin-resistant Cx. pipiens pallens.
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Affiliation(s)
- C L Zhu
- Department of Vector Biology and Immunology, Nanjing Medical University, Nanjing 210029
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Shen L, Zhang ZS, Wu HW, Weir RE, Xie ZW, Hu LS, Chen SZ, Ji MJ, Su C, Zhang Y, Bickle QD, Cousens SN, Taylor MG, Wu GL. Down-regulation of specific antigen-driven cytokine production in a population with endemic Schistosoma japonicum infection. Clin Exp Immunol 2002; 129:339-45. [PMID: 12165092 PMCID: PMC1906450 DOI: 10.1046/j.1365-2249.2002.01914.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Schistosome antigen-driven cytokine responses and antischistosome antibody levels of residents of a Schistosoma japonicum endemic island in Poyang Lake, Jiangxi Province were studied before and 45 days after treatment with praziquantel. IL-4, IL-5, IL-10 and INF-gamma were all detected in the supernatants of whole-blood cultures after stimulation with schistosome soluble egg antigen (SEA) and soluble worm antigen preparation (SWAP). The percentages of subjects producing detectable amounts of each cytokine assayed were higher in the group who were negative by stool examination at the start of the study than in those who were initially stool positive. After praziquantel treatment the percentages of subjects producing both type I and type II cytokines increased. This suggests that the production of both types of cytokine was down-regulated in the presence of live, egg-laying S. japonicum adult worms but that this was reversible by treatment. In contrast, the antibody studies showed higher levels of SWAP and SEA-specific antibodies (IgE, total IgG, IgG4, IgM) in subjects who were originally stool-positive than in those who were stool-negative. After treatment specific IgE responses were elevated, but total IgG and IgG4 anti-SEA and IgM anti-SWAP antibody levels all fell significantly.
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Affiliation(s)
- L Shen
- Molecular- and Immuno-parasitology Research Department, Nanjing Medical University, China
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Yu XC, Wu GL, Zhang YJ, Wu YQ, Zhu CL, Zhang ZH, Chen BY. [Studies of the genetic polymorphism of Schistosoma japonicum (Chinese mainland strains)]. Yi Chuan Xue Bao 2001; 27:498-505. [PMID: 11057045] [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: 02/18/2023]
Abstract
In order to analyze the interspecies diversity and the extent of diversity among Schistosoma japonicum Chinese mainland strains, the genetic variation on gene level among 6 isolates collected from Jiangxi, Hunan, Hubei, Anhui, Sichuan, Yunnan and a cultured isolate from a laboratory were studied using molecular biological technique. There were only two different bases at position 112 and 143 in 536 bp sequence of 28S rDNA-D2 domain between Anhui and Yunnan isolates, the homology was 99.6%. The result could be explained the reason of why the migration rates of single chain 28S rDNA-D2 domain among the above 7 isolates were the same completely in PCR-SSCP. However, comparing with the sequences of the Philippine isolate of S. japonicum, S. mansoni and S. aematobium, there were 6, 94 and 93 different bases and the homologies were 98.9, 82.5 and 82.7 per cent separately. With 8 restriction endonucleases to analyze the ITS of rDNA obtained by PCR from the 7 isolates, the results showed that only 3 minor bands were different, e.g. 5.3% of total 58 fragments. It was suggested that the ITS of rDNA among 7 isolates were highly conserved. Using randomly amplified polymorphic DNA (RAPD) to analyze the genetic diversity of the genomes of the 7 isolates, the average genetic distance (D) calculated from total 284 amplified fragments was 0.22. The maximum D was 0.30 and existed between Anhui and Yunnan isolates. The minimum D was 0.13 and existed between Sichuan and Yunnan isolates. The clustering analysis of genetic distances showed that the 7 isolates could be gathered in one group. From above three results, it could be considered that the genetic diversity on gene level among S. japonicum Chinese mainland strains was very low.
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Affiliation(s)
- X C Yu
- Dept. of Molecular Genetics, Institute of Genetics, CAS, Beijing, China
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22
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Wu GL, Yang HM. [A case-control study on risk factors for definite and borderline hypertension]. Zhonghua Liu Xing Bing Xue Za Zhi 1995; 16:18-21. [PMID: 7767920] [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: 01/27/2023]
Abstract
To study the risk factors for definite and borderline hypertension (HBP), a pair-matched case-control study was conducted with data from the outpatient service of department of internal medicine in Tianjin Binjiang Hospital in 1991-1992. The cases were selected from 312 patients with definite and borderline HBP diagnosed during period 1990-1992 and those newly identified during the survey. The controls were selected from other subjects with no histories of cardiovascular disease and matched by age and sex. The conditional logistic regression model was used by definition of definite and borderline HBP for analysis. The results showed that the risk factors for developing definite or borderline HBP were: family history of HBP, lower level of education, higher weight or body mass index (kg/m2). The association of all these variables with definite HBP were more significant than that with borderline HBP.
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Affiliation(s)
- G L Wu
- Department of Epidemiology, Tianjin Medical University
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23
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Xiao H, Zhang RL, Wu GL. [Video-assisted thoracoscopic surgery for chest disease]. Zhonghua Wai Ke Za Zhi 1994; 32:681-2. [PMID: 7774410] [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: 01/27/2023]
Abstract
Video-assisted thoracoscopic surgery was applied in a total of 20 patients, since Dec. 1992. There were 16 man and 4 woman whose ages ranged from 20 to 65 years. Three patient had a wedge resection for lung tumors, one a lobectomy for tracheaectasy, eleven with recurrent spontaneous pneumothorax were successfully treated, Pleural tumors (n = 1), pulmonary cyst (n = 1), Three biopsy of lung. The advantages of this for patients include cosmetic considerations, a shorter operation period, low pain, earlier postoperation mobilization.
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Affiliation(s)
- H Xiao
- Fuzhou General Hospital, Nanjing Military Unit
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24
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Wu GL, Wang HJ. [To reach a higher standard in a hospital, the nursing coordinator of the admissions office possesses a very important role]. Zhonghua Hu Li Za Zhi 1994; 29:599-600. [PMID: 7614572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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Unger E, Shen D, Fritz T, Kulik B, Lund P, Wu GL, Yellowhair D, Ramaswami R, Matsunaga T. Gas-filled lipid bilayers as ultrasound contrast agents. Invest Radiol 1994; 29 Suppl 2:S134-6. [PMID: 7928208 DOI: 10.1097/00004424-199406001-00044] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- E Unger
- Department of Radiology, University of Arizona Health Sciences Center, Tucson 85724
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26
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Affiliation(s)
- D Shen
- Department of Radiology, University of Arizona Health Sciences Center, Tucson 85724
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Unger E, Shen D, Fritz T, Wu GL, Kulik B, New T, Matsunaga T, Ramaswami R. Liposomes bearing membrane-bound complexes of manganese as magnetic resonance contrast agents. Invest Radiol 1994; 29 Suppl 2:S168-9. [PMID: 7928219 DOI: 10.1097/00004424-199406001-00055] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- E Unger
- Department of Radiology, University of Arizona Health Sciences Center, Tucson 85724
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Abstract
To explore the effects of diet and other factors on breast cancer development, a case-control study was conducted in Tianjin between 1986-87. After adjusting for confounding factors, it was found that factors associated with increased risk of breast cancer included --early age at menarche; late age at menopause; late age at first birth; high Qutelet's index; histories of breast wound, disease and benign tumor; and a family history of malignant tumor, high fat, high calorie, low vegetable intake; elevated serum cholesterol and LDL-cholesterol; and lower levels of serum HDL-cholesterol and whole blood selenium.
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Affiliation(s)
- X Y Qi
- Tianjin Medical University, People's Republic of China
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29
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Unger E, Shen DK, Fritz T, Lund P, Wu GL, Kulik B, DeYoung D, Standen J, Ovitt T, Matsunaga T. Gas-filled liposomes as echocardiographic contrast agents in rabbits with myocardial infarcts. Invest Radiol 1993; 28:1155-9. [PMID: 8307721 DOI: 10.1097/00004424-199312000-00015] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.9] [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: 01/29/2023]
Abstract
RATIONALE AND OBJECTIVES The authors evaluated gas-filled liposomes as echocardiographic contrast agents in rabbits with myocardial infarcts. METHODS Ten rabbits underwent ligation of the left anterior descending coronary artery. Five animals underwent echocardiography before and after production of myocardial infarct (MI) and four animals had post-MI imaging only. In either case, images were obtained before and after injection of a single dose of 1 mL of gas-filed liposomes. Three radiologists blinded to clinical information reviewed the pre- and postcontrast images and assessed endomyocardial border definition, wall motion, confidence levels for normal versus abnormal wall motion and visualization of papillary muscle and mitral valve. RESULTS Postcontrast scans showed significant improvement (P < .05) in endomyocardial border definition, visualization of wall motion, papillary muscle and mitral valve as well as increased reader confidence level. CONCLUSIONS These results are encouraging and suggest that gas-filled liposomes may be a useful contrast agent for echocardiography.
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Affiliation(s)
- E Unger
- Department of Radiology, University of Arizona Health Sciences Center, Tucson 85724
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Zhao WX, Wu GL, Guan XH. Immunodiagnosis of Schistosoma japonicum infection in China. Chin Med J (Engl) 1993; 106:623-7. [PMID: 8222913] [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: 01/29/2023] Open
Abstract
Diagnosis is an essential prerequisite for the control programs of schistosomiasis. Chinese scientists have been making efforts for decades towards the development of immunological approach in an attempt to offer alternatives of or supplements to parasitological diagnosis. The authors outline briefly the main advances in the research of immunodiagnosis for schistosomiasis japonica in China in two catalogues: antibody detection and antigen detection. A number of immunodiagnostic assays based on antibody detection, which have been used widely in the control programs in China, are appraised in terms of sensitivity and specificity, and the achievements in the development of immunodiagnostic assays based on antigen detection are introduced. Readers will find some information concerning the efforts so far made by Chinese scientists in the improvement of immunodiagnosis by use of molecular approach, including search for biochemically and/or immunochemically isolated and/or purified antigens, recombinant antigens and anti-idiotypic reagents of diagnostic interest to construct defined antigen-antibody systems for diagnosis, and development of monoclonal antibody-based assays for antibody or antigen detections.
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Affiliation(s)
- W X Zhao
- Department of Parasitology, Nanjing Medical College
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Abstract
Liposomes are generally thought of as being useful for entrapping drugs within their internal aqueous space. When used with MR contrast agents, this has the drawback that water flux across the membrane bilayer is limiting to contrast enhancement. This can be partially overcome by making the liposomes very small, such that surface area is relatively great compared to internal volume, thereby facilitating water exchange. Alternatively the membranes can be designed to be permeable to water but this may render the vesicles unstable in serum. Another approach is to incorporate the contrast agents into the lipid bilayer. By designing novel complexes of manganese with the ligands incorporated onto dual acyl chains, we have achieved R1 and R2 values of over 20/mmol sec-1 or more than five times higher than Gd-DTPA. Hepatic metastasis detection is significantly improved in rats at doses of only 10 mumol/kg manganese. Membrane-bound manganese complexes function as highly effective liver imaging agents and merit further study for development as agents to undergo human clinical trials.
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Affiliation(s)
- E Unger
- Department of Radiology, University of Arizona Health Sciences Center, Tucson 85724
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Wu GL. [1:R matched case-control studies with fixed and varying numbers of controls]. Zhonghua Zhong Liu Za Zhi 1990; 12:104-7. [PMID: 2401171] [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: 12/31/2022]
Abstract
This paper introduces the use of the Mantel-Haenszel estimator in 1:R matched case-control studies with fixed and varying numbers of controls matched to each case. The new methods of variance estimator of the Mantel-Haenszel estimator of a common odds ratio were provided. These methods were also summarized into the method of calculating table in order to present a simple, convenient and easily understanding method for the readers.
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He ZX, Xue JY, Wu GL. [Studies on DNA methylation in transformed mouse liver cells]. Shi Yan Sheng Wu Xue Bao 1989; 22:417-21. [PMID: 2626895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Activity of DNA methylase and DNA methylation level were measured from normal mouse liver, mouse liver charged with H22a ascitic hepatoma and H22a ascitic hepatoma cell by measuring incorporation of H3-methyl. S-Adenosyl-3H-methyl-methionine (3H-SAM) was used as methyl donor. DNA methylation level of different cells were measured by HP-LC. DNA methylase activity and DNA methylation level of H22a ascitic hepatoma, mouse liver charged with H22a ascitic hepatoma are lower than normal mouse liver. Treatments of antitumor drugs lead to a rising of DNA methylase activity of tumor cell, however, the DNA methylation level of tumor cell has not rised after such treatments.
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Lin YF, Wu GL. [Protective effect of Polyporus umbellatus polysaccharide on toxic hepatitis in mice]. Zhongguo Yao Li Xue Bao 1988; 9:345-8. [PMID: 3195347] [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: 01/04/2023]
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35
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Wu GL. [Analytical methods stratified by confounding factors]. Zhonghua Liu Xing Bing Xue Za Zhi 1987; 8:247-50. [PMID: 3664624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Wu GL. [Risk of breast carcinoma at various ages in women in relation to reproduction and menstruation]. Zhonghua Liu Xing Bing Xue Za Zhi 1986; 7:65-9. [PMID: 3742569] [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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Peng MJ, Kou HT, Lee CM, Chen PZ, Huang WC, Wu GL, Shih CC. Primary tracheobronchial amyloidosis--a report of 2 cases. Taiwan Yi Xue Hui Za Zhi 1986; 85:80-6. [PMID: 3458874] [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: 01/05/2023]
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38
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Wu GL, Chen SG, Zhang DM. [Estimation of the acute ischemic area in experimental dogs and the effect of reperfusion]. Zhonghua Xin Xue Guan Bing Za Zhi 1985; 13:295-8, 319. [PMID: 3836894] [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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Wu GL. [Relation between menstrual, reproductive factors and pathogenesis of breast cancer]. Zhonghua Yi Xue Za Zhi 1985; 65:273-7. [PMID: 3926263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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40
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Wu GL, Chen SG, Jia DL, Cao EH, Zhang DM. [Effect of a combined use of propranolol and nifedipine on experimental myocardial infarct size]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 1984; 6:342-5. [PMID: 6241084] [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: 01/19/2023]
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Jiang TL, Yan SC, Wang SF, Wu GL, Feng GW, Li LF, Li XM, Shen JH. Effect of "liuwei dihuang decoction" on prevention and treatment of tumor. J TRADIT CHIN MED 1984; 4:59-68. [PMID: 6088897] [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: 01/18/2023]
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Wei Q, Wu GL, Nie JC. [Effects of Polyporus umbellatus polysaccharides on glycogen storage, enzyme activities in glyconeogenesis and glycogenolysis of liver in mice bearing hepatoma H22]. Zhongguo Yao Li Xue Bao 1983; 4:141-3. [PMID: 6310956] [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: 01/19/2023]
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Wu GL. [Pathophysiology of reperfusion of the ischemic myocardium]. Sheng Li Ke Xue Jin Zhan 1983; 14:118-122. [PMID: 6612294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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Wei Q, Wu GL, Nie JC, Song SY, Bai YZ. [Effects of Polyporus umbellatus polysaccharides on liver carbohydrate metabolism and adrenocortical function of mice bearing hepatoma H22]. Zhongguo Yao Li Xue Bao 1983; 4:52-4. [PMID: 6223500] [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: 01/19/2023]
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Jiang TL, Yan SC, Wang SF, Feng GW, Li LF, Wu GL. Effect of extracts of Spirobolus bungii on transplanted tumors in mice. J TRADIT CHIN MED 1981; 1:27-33. [PMID: 6926684] [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: 01/22/2023]
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