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Gao SH, Tao Y, Zhu Y, Huang H, Shen LL, Gao CY. Activation of Dopamine D2 Receptors Alleviates Neuronal Hyperexcitability in the Lateral Entorhinal Cortex via Inhibition of HCN Current in a Rat Model of Chronic Inflammatory Pain. Neurosci Bull 2022; 38:1041-1056. [PMID: 35705785 PMCID: PMC9468209 DOI: 10.1007/s12264-022-00892-z] [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: 10/31/2021] [Accepted: 04/10/2022] [Indexed: 10/18/2022] Open
Abstract
Functional changes in synaptic transmission from the lateral entorhinal cortex to the dentate gyrus (LEC-DG) are considered responsible for the chronification of pain. However, the underlying alterations in fan cells, which are the predominant neurons in the LEC that project to the DG, remain elusive. Here, we investigated possible mechanisms using a rat model of complete Freund's adjuvant (CFA)-induced inflammatory pain. We found a substantial increase in hyperpolarization-activated/cyclic nucleotide-gated currents (Ih), which led to the hyperexcitability of LEC fan cells of CFA slices. This phenomenon was attenuated in CFA slices by activating dopamine D2, but not D1, receptors. Chemogenetic activation of the ventral tegmental area -LEC projection had a D2 receptor-dependent analgesic effect. Intra-LEC microinjection of a D2 receptor agonist also suppressed CFA-induced behavioral hypersensitivity, and this effect was attenuated by pre-activation of the Ih. Our findings suggest that down-regulating the excitability of LEC fan cells through activation of the dopamine D2 receptor may be a strategy for treating chronic inflammatory pain.
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Affiliation(s)
- Shi-Hao Gao
- Department of Rehabilitation, Daping Hospital, Army Medical University, Chongqing, 400042, China
- Army 953 Hospital, Army Medical University, Shigatse, 857000, China
| | - Yong Tao
- Department of Rehabilitation, Daping Hospital, Army Medical University, Chongqing, 400042, China
| | - Yang Zhu
- Department of Rehabilitation, Daping Hospital, Army Medical University, Chongqing, 400042, China
| | - Hao Huang
- Department of Rehabilitation, Daping Hospital, Army Medical University, Chongqing, 400042, China
| | - Lin-Lin Shen
- Department of Respiratory and Critical Care Medicine, Xinqiao Hospital, Army Medical University, Chongqing, 400037, China.
| | - Chang-Yue Gao
- Department of Rehabilitation, Daping Hospital, Army Medical University, Chongqing, 400042, China.
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Shen LL, Waheed A, Wang YP, Nkurikiyimfura O, Wang ZH, Yang LN, Zhan J. Corrigendum: Mitochondrial genome contributes to the thermal adaptation of the oomycete Phytophthora infestans. Front Microbiol 2022; 13:1002575. [PMID: 36033840 PMCID: PMC9411251 DOI: 10.3389/fmicb.2022.1002575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 07/26/2022] [Indexed: 11/13/2022] Open
Affiliation(s)
- Lin-Lin Shen
- Institute of Oceanography, Minjiang University, Fuzhou, China
| | - Abdul Waheed
- Institute of Oceanography, Minjiang University, Fuzhou, China
| | - Yan-Ping Wang
- Sichuan Provincial Key Laboratory for Development and Utilization of Characteristic Horticultural Biological Resources, Chengdu Normal University, Chengdu, China
| | - Oswald Nkurikiyimfura
- Institute of Plant Virology, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Zong-Hua Wang
- Institute of Oceanography, Minjiang University, Fuzhou, China
| | - Li-Na Yang
- Institute of Oceanography, Minjiang University, Fuzhou, China
- *Correspondence: Li-Na Yang
| | - Jiasui Zhan
- Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences, Uppsala, Sweden
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Shen LL, Waheed A, Wang YP, Nkurikiyimfura O, Wang ZH, Yang LN, Zhan J. Mitochondrial Genome Contributes to the Thermal Adaptation of the Oomycete Phytophthora infestans. Front Microbiol 2022; 13:928464. [PMID: 35836411 PMCID: PMC9273971 DOI: 10.3389/fmicb.2022.928464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 05/23/2022] [Indexed: 11/13/2022] Open
Abstract
As a vital element of climate change, elevated temperatures resulting from global warming present new challenges to natural and agricultural sustainability, such as ecological disease management. Mitochondria regulate the energy production of cells in responding to environmental fluctuation, but studying their contribution to the thermal adaptation of species is limited. This knowledge is needed to predict future disease epidemiology for ecology conservation and food security. Spatial distributions of the mitochondrial genome (mtDNA) in 405 Phytophthora infestans isolates originating from 15 locations were characterized. The contribution of MtDNA to thermal adaptation was evaluated by comparative analysis of mtDNA frequency and intrinsic growth rate, relative population differentiation in nuclear and mtDNA, and associations of mtDNA distribution with local geography climate conditions. Significant variation in frequency, intrinsic growth rate, and spatial distribution was detected in mtDNA. Population differentiation in mtDNA was significantly higher than that in the nuclear genome, and spatial distribution of mtDNA was strongly associated with local climatic conditions and geographic parameters, particularly air temperature, suggesting natural selection caused by a local temperature is the main driver of the adaptation. Dominant mtDNA grew faster than the less frequent mtDNA. Our results provide useful insights into the evolution of pathogens under global warming. Given its important role in biological functions and adaptation to local air temperature, mtDNA intervention has become an increasing necessity for future disease management. To secure ecological integrity and food production under global warming, a synergistic study on the interactive effect of changing temperature on various components of biological and ecological functions of mitochondria in an evolutionary frame is urgently needed.
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Affiliation(s)
- Lin-Lin Shen
- Institute of Oceanography, Minjiang University, Fuzhou, China
| | - Abdul Waheed
- Institute of Oceanography, Minjiang University, Fuzhou, China
| | - Yan-Ping Wang
- Sichuan Provincial Key Laboratory for Development and Utilization of Characteristic Horticultural Biological Resources, Chengdu Normal University, Chengdu, China
| | - Oswald Nkurikiyimfura
- Institute of Plant Virology, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Zong-Hua Wang
- Institute of Oceanography, Minjiang University, Fuzhou, China
| | - Li-Na Yang
- Institute of Oceanography, Minjiang University, Fuzhou, China
- *Correspondence: Li-Na Yang
| | - Jiasui Zhan
- Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences, Uppsala, Sweden
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Guo JT, Shen LL, Liang CY, Liu X, Zhang T, Ma YF, Liu Y. [Survival analysis of unexpected small cell lung cancer following surgery]. Zhonghua Zhong Liu Za Zhi 2022; 44:550-554. [PMID: 35754229 DOI: 10.3760/cma.j.cn112152-20210209-00126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To investigate the survival and influencing factors of unexpected small cell lung cancer following surgery. Methods: We respectively reviewed the clinical characters of 104 patients who underwent surgical treatment and be proved as small cell lung cancer by pathology between January 2000 to October 2020 in Chinese PLA General Hospital. Overall survival (OS) of patients was evaluated using Kaplan-Meier and Cox proportional hazards analysis. Results: Of 104 patients, 27 cases showed central lesions, and other 77 showed peripheral nodules. The margin of nodules was smooth in 42 cases on CT imaging. The median OS was 34.3 months and 5-year OS rate was 45.8%. Postoperative 5-year OS rates for patients were 52.1%, 45.4%, and 27.8% for clinical stages Ⅰ, Ⅱ, and Ⅲ, respectively. Univariate analyses identified the age, surgical access, surgical approach, N stage, TNM stage and vascular cancer emboli were associated with OS (P<0.05). The N stage was an independent factor for the OS of patients (P<0.05). Conclusions: Patients with unexpected SCLC, including Ⅰ, Ⅱ and part ⅢA stage have favorable outcome and can benefit from surgery and systemic postoperative treatment. Standard lobectomy plus systemic lymph node dissection is commended.
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Affiliation(s)
- J T Guo
- Department of Thoracic Surgery, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - L L Shen
- Department of Thoracic Surgery, Hainan Hospital, Chinese PLA General Hospital, Sanya 572000, China
| | - C Y Liang
- Department of Thoracic Surgery, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - X Liu
- Department of Thoracic Surgery, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - T Zhang
- Department of Thoracic Surgery, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Y F Ma
- Department of Thoracic Surgery, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Y Liu
- Department of Thoracic Surgery, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
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Lu J, Xu BB, Shen LL, Zheng CH, Li P, Xie JW, Wang JB, Lin JX, Chen QY, Huang CM. [Analysis of characteristics and trends of randomized controlled trials of gastric cancer between 2000 and 2019]. Zhonghua Wai Ke Za Zhi 2022; 60:479-486. [PMID: 35359091 DOI: 10.3760/cma.j.cn112139-20210730-00338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objectives: To analyze the current development status of gastric cancer (GC) randomized controlled trials (RCT) between 2000 and 2019, and to review the basic characteristics of published RCT. Methods: ClinicalTrials.gov was searched for phase 3 or 4 RCT conducted between January 2000 and December 2019 with the keyword "gastric cancer", and the development trend of different types of RCT during different time periods was described. Basic features of registered RCT such as intervention, study area, single-center or multicenter, sample size, and funding were presented. PubMed and Scopus databases were searched to judge the publication status of studies completed until June 2016. The adequacy of the report was estimated by the Consolidated Standards of Reporting Trials (CONSORT) checklist. Design flaws were evaluated by Cochrane tool and/or whether a systematic literature review was cited. The data was analyzed by χ2 test or Fisher exact test. Results: There were 262 RCT including in the present study. The number of GC-RCT registered on ClinicalTrials.gov had been on the rise from 1 case in 2000 to 30 cases in 2015. The proportion of RCT associated with targeted therapy or immunotherapy increased from 0 during 2000-2004 to 37.1% (36/97) during2015-2019. The RCT registered in Asia was 191 cases, while that in non-Asia region was 71 cases. The proportion of multi-center RCT from non-Asia was higher than that from Asia (70.4% (50/71) vs. 50.3% (96/191), χ²=8.527, P=0.003). The proportion of RCT published was 59.1% (81/137). Among the published RCT, 65 (80.2%) studies were reported adequately, but 63 (77.8%) studies had avoidable design limitations. Conclusions: Targeted therapy and immunotherapy have become research hotspots in the treatment of GC. At present, there are inadequate multicenter RCT in Asia, and the publication rate of RCT is low. A considerable number of published RCT are reported inadequately and have avoidable design flaws.
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Affiliation(s)
- J Lu
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fuzhou 350004, China
| | - B B Xu
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fuzhou 350004, China
| | - L L Shen
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fuzhou 350004, China
| | - C H Zheng
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fuzhou 350004, China
| | - P Li
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fuzhou 350004, China
| | - J W Xie
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fuzhou 350004, China
| | - J B Wang
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fuzhou 350004, China
| | - J X Lin
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fuzhou 350004, China
| | - Q Y Chen
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fuzhou 350004, China
| | - C M Huang
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fuzhou 350004, China
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Lu J, Xu BB, Shen LL, Zheng CH, Li P, Xie JW, Wang JB, Lin JX, Chen QY, Huang CM. [Analysis of characteristics and trends of randomized controlled trials of gastric cancer between 2000 and 2019]. Zhonghua Wai Ke Za Zhi 2022; 60:478-485. [PMID: 35417942 DOI: 10.3760/cma.j.cn112139-202100908-00429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objectives: To analyze the current development status of gastric cancer (GC) randomized controlled trials (RCT) between 2000 and 2019, and to review the basic characteristics of published RCT. Methods: ClinicalTrials.gov was searched for phase 3 or 4 RCT conducted between January 2000 and December 2019 with the keyword "gastric cancer", and the development trend of different types of RCT during different time periods was described. Basic features of registered RCT such as intervention, study area, single-center or multicenter, sample size, and funding were presented. PubMed and Scopus databases were searched to judge the publication status of studies completed until June 2016. The adequacy of the report was estimated by the Consolidated Standards of Reporting Trials (CONSORT) checklist. Design flaws were evaluated by Cochrane tool and/or whether a systematic literature review was cited. The data was analyzed by χ2 test or Fisher exact test. Results: There were 262 RCT including in the present study. The number of GC-RCT registered on ClinicalTrials.gov had been on the rise from 1 case in 2000 to 30 cases in 2015. The proportion of RCT associated with targeted therapy or immunotherapy increased from 0 during 2000-2004 to 37.1% (36/97) during 2015-2019. The RCT registered in Asia was 191 cases, while that in non-Asia region was 71 cases. The proportion of multi-center RCT from non-Asia was higher than that from Asia (70.4% (50/71) vs. 50.3% (96/191), χ²=8.527, P=0.003). The proportion of RCT published was 59.1% (81/137). Among the published RCT, 65 (80.2%) studies were reported adequately, but 63 (77.8%) studies had avoidable design limitations. Conclusions: Targeted therapy and immunotherapy have become research hotspots in the treatment of GC. At present, there are inadequate multicenter RCT in Asia, and the publication rate of RCT is low. A considerable number of published RCT are reported inadequately and have avoidable design flaws.
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Affiliation(s)
- J Lu
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fuzhou 350004, China
| | - B B Xu
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fuzhou 350004, China
| | - L L Shen
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fuzhou 350004, China
| | - C H Zheng
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fuzhou 350004, China
| | - P Li
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fuzhou 350004, China
| | - J W Xie
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fuzhou 350004, China
| | - J B Wang
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fuzhou 350004, China
| | - J X Lin
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fuzhou 350004, China
| | - Q Y Chen
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fuzhou 350004, China
| | - C M Huang
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fuzhou 350004, China
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Fan XS, Shen LL, Hu R, He JX, Li YT, Yuan H. [Research progress on the correlation between small dense low-density lipoprotein-cholesterol and atherosclerotic cardiovascular disease]. Zhonghua Yu Fang Yi Xue Za Zhi 2021; 55:1507-1512. [PMID: 34963252 DOI: 10.3760/cma.j.cn112150-20210817-00801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Atherosclerotic cardiovascular disease (ASCVD), a series of cardiovascular diseases based on atherosclerosis, has attracted more clinical attention. However, with the increase of population-based research results, the diagnostic value of traditional blood lipid parameters such as low density lipoprotein-cholesterol (LDL-C) is showing limitations. In recent years, a large number of studies have confirmed that small dense low-density lipoprotein cholesterol (sdLDL-C) has lower affinity with low-density lipoprotein receptor, longer circulation time and easier to penetrate arterial endothelium, so it has stronger atherogenic effect. Therefore, we summarize the common detection methods of sdLDL-C, the research progress of the correlation between sdLDL-C and ASCVD risk, as well as the intervention measures and influencing factors of sdLDL-C level, in order to deepen the clinician's understanding of the role of sdLDL-C in ASCVD and achieve the early prevention, early detection and early diagnosis of chronic atherosclerosis.
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Affiliation(s)
- X S Fan
- Department of Clinical Laboratory, Beijing Anzhen Hospital, Beijing 100029, China
| | - L L Shen
- Graduate School, Capital Medical University, Beijing 100069, China
| | - R Hu
- Department of Clinical Laboratory, Beijing Anzhen Hospital, Beijing 100029, China
| | - J X He
- Department of Clinical Laboratory, Beijing Anzhen Hospital, Beijing 100029, China
| | - Y T Li
- Department of Laboratory Medicine, Capital Medical University, Beijing 100069, China
| | - H Yuan
- Department of Clinical Laboratory, Beijing Anzhen Hospital, Beijing 100029, China
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Shen LL, Waheed A, Wang YP, Nkurikiyimfura O, Wang ZH, Yang LN, Zhan J. Multiple Mechanisms Drive the Evolutionary Adaptation of Phytophthora infestans Effector Avr1 to Host Resistance. J Fungi (Basel) 2021; 7:jof7100789. [PMID: 34682211 PMCID: PMC8538934 DOI: 10.3390/jof7100789] [Citation(s) in RCA: 2] [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] [Received: 08/18/2021] [Revised: 09/08/2021] [Accepted: 09/15/2021] [Indexed: 11/16/2022] Open
Abstract
Effectors, a group of small proteins secreted by pathogens, play a central role in antagonistic interactions between plant hosts and pathogens. The evolution of effector genes threatens plant disease management and sustainable food production, but population genetic analyses to understand evolutionary mechanisms of effector genes are limited compared to molecular and functional studies. Here we investigated the evolution of the Avr1 effector gene from 111 Phytophthora infestans isolates collected from six areas covering three potato cropping regions in China using a population genetic approach. High genetic variation of the effector gene resulted from diverse mechanisms including base substitution, pre-termination, intragenic recombination and diversifying selection. Nearly 80% of the 111 sequences had a point mutation in the 512th nucleotide (T512G), which generated a pre-termination stop codon truncating 38 amino acids in the C-terminal, suggesting that the C-terminal may not be essential to ecological and biological functions of P. infestans. A significant correlation between the frequency of Avr1 sequences with the pre-termination and annual mean temperature in the collection sites suggests that thermal heterogeneity might be one of contributors to the diversifying selection, although biological and biochemical mechanisms of the likely thermal adaptation are not known currently. Our results highlight the risk of rapid adaptation of P. infestans and possibly other pathogens as well to host resistance, and the application of eco-evolutionary principles is necessary for sustainable disease management in agricultural ecosystems.
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Affiliation(s)
- Lin-Lin Shen
- Key Lab for Biopesticide and Chemical Biology, Fujian Agriculture and Forestry University, Ministry of Education, Fuzhou 350002, China; (L.-L.S.); (A.W.); (O.N.)
| | - Abdul Waheed
- Key Lab for Biopesticide and Chemical Biology, Fujian Agriculture and Forestry University, Ministry of Education, Fuzhou 350002, China; (L.-L.S.); (A.W.); (O.N.)
| | - Yan-Ping Wang
- College of Chemistry and Life Sciences, Sichuan Provincial Key Laboratory for Development and Utilization of Characteristic Horticultural Biological Resources, Chengdu Normal University, Chengdu 611130, China;
| | - Oswald Nkurikiyimfura
- Key Lab for Biopesticide and Chemical Biology, Fujian Agriculture and Forestry University, Ministry of Education, Fuzhou 350002, China; (L.-L.S.); (A.W.); (O.N.)
| | - Zong-Hua Wang
- Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
- Institute of Oceanography, Minjiang University, Fuzhou 350108, China
| | - Li-Na Yang
- Key Lab for Biopesticide and Chemical Biology, Fujian Agriculture and Forestry University, Ministry of Education, Fuzhou 350002, China; (L.-L.S.); (A.W.); (O.N.)
- Institute of Oceanography, Minjiang University, Fuzhou 350108, China
- Correspondence: (L.-N.Y.); (J.Z.); Tel.: +86-177-2080-5328 (L.-N.Y.); +46-18-673-639 (J.Z.)
| | - Jiasui Zhan
- Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences, 75007 Uppsala, Sweden
- Correspondence: (L.-N.Y.); (J.Z.); Tel.: +86-177-2080-5328 (L.-N.Y.); +46-18-673-639 (J.Z.)
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Shen LL, Sun JB, Yang XJ, Deng H, Qin W, Du MY, Meng LX, Li N, Guo XY, Qiao WZ, Yang WQ, Liu P, Zeng X. Reassessment of the Effect of Transcutaneous Auricular Vagus Nerve Stimulation Using a Novel Burst Paradigm on Cardiac Autonomic Function in Healthy Young Adults. Neuromodulation 2021; 25:433-442. [PMID: 35396073 DOI: 10.1111/ner.13521] [Citation(s) in RCA: 2] [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: 02/23/2021] [Revised: 06/14/2021] [Accepted: 07/13/2021] [Indexed: 12/16/2022]
Abstract
BACKGROUND Transcutaneous auricular vagus nerve stimulation (taVNS) may modulate cardiac autonomic function. However, the response rate of the traditional tonic paradigm is low, and the results remain inconsistent. A recent pilot study presented a novel burst paradigm to activate the cardiac parasympathetic system, which might offer a new approach to treat cardiac autonomic function. The present study reassessed the effect of burst taVNS on modulating heart rate variability and explored the difference between burst and traditional tonic paradigms. MATERIALS AND METHODS Forty-two young adults were recruited for this study. Each participant underwent three types of taVNS with sham (30 sec of stimulation), tonic (25 Hz, 500 μsec), and burst (five pulses at 500 Hz every 200 msec) paradigms, respectively, with simultaneous electrocardiogram recording. One-way analysis of variance, multivariate analysis of variance, and linear regression were used for analysis. Multiple testing was performed using Bonferroni correction. RESULTS Both burst and tonic paradigms induced a significant decrease in heart rate, which continued until poststimulation, and increased cardiac parasympathetic activity. Moreover, two parasympathetic system indicators showed significant increase only in burst taVNS. The response rates during burst (35.7%) and tonic (38.1%) stimulations were both higher than that during sham stimulation (11.9%). The response to taVNS showed parameter specificity with few nonresponders to the tonic paradigm responding to the burst paradigm. The overall response rate increased from 38.1% in tonic taVNS to 54.8% in taVNS using both burst and tonic paradigms. For both burst and tonic responders, baseline cardiac parasympathetic activity was found to be significantly negatively correlated with changes during stimulation. CONCLUSION The burst parameter could be used as an alternative strategy for regulating cardiac parasympathetic function by taVNS, which has the potential to be used as a complementary paradigm to traditional tonic taVNS for promoting clinical treatment efficacy.
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Affiliation(s)
- Lin-Lin Shen
- Engineering Research Center of Molecular and Neuro Imaging of Ministry of Education, Intelligent Non-Invasive Neuromodulation and Transformation Joint Laboratory, School of Life Science and Technology, Xidian University, Xi'an, China
| | - Jin-Bo Sun
- Engineering Research Center of Molecular and Neuro Imaging of Ministry of Education, Intelligent Non-Invasive Neuromodulation and Transformation Joint Laboratory, School of Life Science and Technology, Xidian University, Xi'an, China
| | - Xue-Juan Yang
- Engineering Research Center of Molecular and Neuro Imaging of Ministry of Education, Intelligent Non-Invasive Neuromodulation and Transformation Joint Laboratory, School of Life Science and Technology, Xidian University, Xi'an, China
| | - Hui Deng
- Engineering Research Center of Molecular and Neuro Imaging of Ministry of Education, Intelligent Non-Invasive Neuromodulation and Transformation Joint Laboratory, School of Life Science and Technology, Xidian University, Xi'an, China
| | - Wei Qin
- Engineering Research Center of Molecular and Neuro Imaging of Ministry of Education, Intelligent Non-Invasive Neuromodulation and Transformation Joint Laboratory, School of Life Science and Technology, Xidian University, Xi'an, China
| | - Meng-Yu Du
- Engineering Research Center of Molecular and Neuro Imaging of Ministry of Education, Intelligent Non-Invasive Neuromodulation and Transformation Joint Laboratory, School of Life Science and Technology, Xidian University, Xi'an, China
| | - Ling-Xia Meng
- Engineering Research Center of Molecular and Neuro Imaging of Ministry of Education, Intelligent Non-Invasive Neuromodulation and Transformation Joint Laboratory, School of Life Science and Technology, Xidian University, Xi'an, China
| | - Nan Li
- Engineering Research Center of Molecular and Neuro Imaging of Ministry of Education, Intelligent Non-Invasive Neuromodulation and Transformation Joint Laboratory, School of Life Science and Technology, Xidian University, Xi'an, China
| | - Xiao-Yu Guo
- Engineering Research Center of Molecular and Neuro Imaging of Ministry of Education, Intelligent Non-Invasive Neuromodulation and Transformation Joint Laboratory, School of Life Science and Technology, Xidian University, Xi'an, China
| | - Wen-Zhou Qiao
- Engineering Research Center of Molecular and Neuro Imaging of Ministry of Education, Intelligent Non-Invasive Neuromodulation and Transformation Joint Laboratory, School of Life Science and Technology, Xidian University, Xi'an, China
| | - Wei-Qi Yang
- Engineering Research Center of Molecular and Neuro Imaging of Ministry of Education, Intelligent Non-Invasive Neuromodulation and Transformation Joint Laboratory, School of Life Science and Technology, Xidian University, Xi'an, China
| | - Peng Liu
- Engineering Research Center of Molecular and Neuro Imaging of Ministry of Education, Intelligent Non-Invasive Neuromodulation and Transformation Joint Laboratory, School of Life Science and Technology, Xidian University, Xi'an, China
| | - Xiao Zeng
- Engineering Research Center of Molecular and Neuro Imaging of Ministry of Education, Intelligent Non-Invasive Neuromodulation and Transformation Joint Laboratory, School of Life Science and Technology, Xidian University, Xi'an, China
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Shen LL, Tao GY, Fu HC, Liu XM, Ye XD, Ye JD. [Predicting response to non-small cell lung cancer immunotherapy using pre-treatment contrast-enhanced CT texture-based classification]. Zhonghua Zhong Liu Za Zhi 2021; 43:541-545. [PMID: 34034473 DOI: 10.3760/cma.j.cn112152-20190725-00468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the value of pre-treatment contrast-enhanced computed tomography (CT)-based texture analysis in predicting response to non-small cell lung cancer (NSCLC) immunotherapy. Methods: From January to July 2018, a total of 51 lesions from 42 patients with advanced non-small cell lung cancer receiving immunotherapy at Shanghai Chest Hospital were selected in this retrospective study. Pre-treatment contrast-enhanced CT-based texture features were extracted by MaZda software. Ten optimal texture features were chosen based on three different methods: Fisher coefficient, mutual information measure (MI) and minimization of classification error probability combined average correlation coefficients(POE+ ACC), respectively. According to the efficacy of the first immunotherapy, 51 lesions were divided into non-progressive disease (non-PD, n=26) and progressive disease (PD, n=25). The differences were tested in each texture feature set between the two groups. The immunotherapy effects of target lesions were analyzed by principal component analysis(PCA), linear discriminant analysis (LDA) and nonlinear discriminant analysis (NDA). The sensitivity, specificity, accuracy, positive-predictive value (PPV) and negative-predictive value (NPV) were calculated. The area under the curve (AUC) was used to quantify the predictive accuracy of the three analysis models for each texture feature set and compare them with the actual classification results. Results: In all of three texture feature sets, the texture parameter differences of Perc.50%, Perc.90%, "S(5, 5)SumEntrp" and "S(4, 4)SumEntrp" were higher in PD group than those in non-PD group (all P<0.05). The classification result of texture feature set chosen by POE+ ACC and analyzed by NDA was identified as the best model (AUC=0.802, 95%CI: 0.674-0.930), and its sensitivity, specificity, accuracy, PPV and NPV were 72%, 88.5%, 80.4%, 85.7%, 76.7%, respectively. Conclusion: Pre-treatment contrast-enhanced CT-based texture characteristics of NSCLC may function as non-invasive biomarkers for the evaluation of response to immunotherapy.
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Affiliation(s)
- L L Shen
- Department of Radiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, China
| | - G Y Tao
- Department of Radiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, China
| | - H C Fu
- Department of Radiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, China
| | - X M Liu
- Department of Radiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, China
| | - X D Ye
- Department of Radiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, China
| | - J D Ye
- Department of Radiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, China
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11
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Li Y, Zhang Y, Zhou Z, Shen L. Intelligent flow control algorithm for microservice system. Cognitive Comp and Systems 2021. [DOI: 10.1049/ccs2.12013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Yudong Li
- School of Information Engineering China University of Geosciences Beijing Haidian Beijing China
| | - Yuqing Zhang
- School of Information Engineering China University of Geosciences Beijing Haidian Beijing China
| | - Zhangbing Zhou
- School of Information Engineering China University of Geosciences Beijing Haidian Beijing China
| | - LinLin Shen
- College of Computer Science and Software Engineering Shenzhen University Shenzhen Guangdong China
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12
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Liao XB, Cheng YS, Liu ZH, Shen LL, Zhao L, Chen C, Li F, Zhang XJ. Performance of BAC for DBPs precursors' removal for one year with micro-polluted lake water in East-China. Environ Technol 2020; 41:3554-3561. [PMID: 31072242 DOI: 10.1080/09593330.2019.1615132] [Citation(s) in RCA: 2] [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] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 04/27/2019] [Indexed: 06/09/2023]
Abstract
Effectiveness of biological activated carbon (BAC) filter in removing disinfection byproducts (DBPs) precursors of micro-polluted lake water for one year was conducted. The formation potential (FP) of DBPs (trihalomethanes (THMs), haloacetic acids (HAAs) and Nitrosamines (NAs)), dissolved organic carbon (DOC), molecular weight (MW) distribution and excitation emission matrix fluorescence (EEM) of dissolved organic material (DOM) in the influent and effluent of BAC were determined. The results indicated that the removal efficiency (RE) of DOC ranged from 42.9-28.3%. Neither virgin GAC nor long-term operated BAC could efficiently dispose of THMs and HAAs precursors (RE from 35.2-18.8%, from 42 to 8.4%, respectively), however, BAC still showed good ability in removal of NAs precursors after a year operation, of which RE just dropped from 81.7-69.6%. There was strong correlation between RE of NAs precursors and DOC with small MW (<0.5 kDa). The removal of HAAs precursors showed relatively close relation to aromatic protein-like components and soluble microbial pollutants (SMPs). Weak direct relationship was found between the water quality parameters and THMs precursors.
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Affiliation(s)
- X B Liao
- Institute of Municipal and Environmental Engineering, College of Civil Engineering, Huaqiao University, Xiamen, People's Republic of China
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, People's Republic of China
| | - Y S Cheng
- Institute of Municipal and Environmental Engineering, College of Civil Engineering, Huaqiao University, Xiamen, People's Republic of China
| | - Z H Liu
- Institute of Municipal and Environmental Engineering, College of Civil Engineering, Huaqiao University, Xiamen, People's Republic of China
| | - L L Shen
- Institute of Municipal and Environmental Engineering, College of Civil Engineering, Huaqiao University, Xiamen, People's Republic of China
| | - L Zhao
- Institute of Municipal and Environmental Engineering, College of Civil Engineering, Huaqiao University, Xiamen, People's Republic of China
| | - C Chen
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, People's Republic of China
| | - F Li
- Institute of Municipal and Environmental Engineering, College of Civil Engineering, Huaqiao University, Xiamen, People's Republic of China
| | - X J Zhang
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, People's Republic of China
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13
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Liu Y, Zhang XH, Wang BT, Shen LL, Yuan J, Chen W, Gao J, Shi HY. [Analysis of clinicopathological features of clear cell tumor of the lung]. Zhonghua Yi Xue Za Zhi 2020; 100:1736-1740. [PMID: 32536096 DOI: 10.3760/cma.j.cn112137-20200106-00033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the clinicopathological features of clear cell tumor of the lung (CCTL). Methods: A total of 9 cases were collected from August 2008 to August 2019 in the Department of Pathology of the First Medical Center of PLA General Hospital and Hainan Hospital of PLA General Hospital. Their clinical data, pathological characteristics, immunohistochemical staining and special staining results were summarized and analyzed. Results: There were 3 males and 6 females, aged from 28 to 70 years (average 52.2 years). All tumors were located in the peripheral part of the lung, and were solitary in 8 cases, and multiple (24 nodules) in 1 case. The lesion was round or oval, with clear boundary. The diameter of the nodule was 0.5-5.5 cm. Histologically, the tumor cells were oval, short fusiform or polygonal, with obvious nucleoli. The tumor cells were mostly distributed in sheet around thin-walled vessels, and there was hyaline degeneration around the blood vessels. Neither necrosis nor mitosis could be seen. Immunohistochemical staining showed tumor cells were diffusely positive for Vimentin, and CD34, Melan-A, specific monoclonal antibody against melanoma (HMB45) and S-100 were positive with different degrees. Broad spectrum cytokeratin (CK), epithelial membrane antigen (EMA), smooth muscle actin (SMA), desmin, CD10, paired box gene 8 (PAX-8) or myomodulatory protein (Myo-D1) were all negative. The positive index of the proliferating cell nuclear antigen (Ki-67) was low. Schiff dyeing with periodate (PAS) staining was positive, PAS staining of glycogen digested by amylase (d-PAS) staining was negative. All the tumors in the nine cases were resected and patients were followed up for 5-137 months. Except 1 case was lost for follow-up, the other 8 cases survived without recurrence or metastasis of the disease. Conclusions: CCTL is a rare benign tumor, most of which are single, few of which can be multiple; histopathological characteristics and immunohistochemical staining are helpful for diagnosis and differentiated diagnosis. After complete resection, the prognosis was good. However, when histological features indicating malignancy, intense follow-up should be considered.
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Affiliation(s)
- Y Liu
- Pathology Department of Hainan Hospital of PLA General Hospital, Sanya 572013, China
| | - X H Zhang
- Radiology Department of Hainan Hospital of PLA General Hospital, Sanya 572013, China
| | - B T Wang
- Radiology Department of Hainan Hospital of PLA General Hospital, Sanya 572013, China
| | - L L Shen
- Thoracic Surgery of Hainan Hospital of PLA General Hospital, Sanya 572013, China
| | - J Yuan
- Pathology Department of the First Medical Center of PLA General Hospital, Beijing 100853, China
| | - W Chen
- Pathology Department of the First Medical Center of PLA General Hospital, Beijing 100853, China
| | - J Gao
- Pathology Department of the First Medical Center of PLA General Hospital, Beijing 100853, China
| | - H Y Shi
- Pathology Department of the First Medical Center of PLA General Hospital, Beijing 100853, China
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14
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Shen LL, Li WW, Xu YL, Gao SH, Xu MY, Bu XL, Liu YH, Wang J, Zhu J, Zeng F, Yao XQ, Gao CY, Xu ZQ, Zhou XF, Wang YJ. Neurotrophin receptor p75 mediates amyloid β-induced tau pathology. Neurobiol Dis 2019; 132:104567. [PMID: 31394202 DOI: 10.1016/j.nbd.2019.104567] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [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: 03/02/2019] [Revised: 06/10/2019] [Accepted: 08/02/2019] [Indexed: 01/05/2023] Open
Abstract
Neurofibrillary tangles of hyperphosphorylated tau protein (p-tau) are a key pathological feature of Alzheimer's disease (AD). Tau phosphorylation is suggested to be secondary to amyloid-beta (Aβ) accumulation. However, the mechanism by which Aβ induces tau phosphorylation in neurons remains unclear. Neurotrophin receptor p75 (p75NTR) is a receptor for Aβ and mediates Aβ neurotoxicity, implying that p75NTR may mediate Aβ-induced tau phosphorylation in AD. Here, we showed that Aβ-induced tau hyperphosphorylation and neurodegeneration, including tau phosphorylation, synaptic disorder and neuronal loss, in the brains of both male wild-type (Wt) mice and male P301L transgenic mice (a mouse model of human tauopathy) were alleviated by genetic knockout of p75NTR in the both mouse models. We further confirmed that the activation or inhibition of cyclin-dependent kinase 5 (CDK5) and glycogen synthase kinase-3β (GSK3β) significantly changed Aβ/p75NTR-mediated p-tau levels in neurons. Treatment of male P301L mice with soluble p75NTR extracellular domain (p75ECD-Fc), which antagonizes the binding of Aβ to p75NTR, suppressed tau hyperphosphorylation. Taken together, our findings suggest that p75NTR meditates Aβ-induced tau pathology and is a potential druggable target for AD and other tauopathies.
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Affiliation(s)
- Lin-Lin Shen
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China; Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing 400042, China; Shigatse Branch, Xinqiao Hospital, Third Military Medical University, Shigatse 857000, China
| | - Wei-Wei Li
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China; Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing 400042, China
| | - Ya-Li Xu
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China; Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing 400042, China
| | - Shi-Hao Gao
- Shigatse Branch, Xinqiao Hospital, Third Military Medical University, Shigatse 857000, China
| | - Man-Yu Xu
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China; Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing 400042, China
| | - Xian-Le Bu
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China; Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing 400042, China
| | - Yu-Hui Liu
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China; Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing 400042, China
| | - Jun Wang
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China; Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing 400042, China
| | - Jie Zhu
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China; Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing 400042, China
| | - Fan Zeng
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China; Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing 400042, China
| | - Xiu-Qing Yao
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China; Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing 400042, China
| | - Chang-Yue Gao
- Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing 400042, China; Department of Rehabilitation, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Zhi-Qiang Xu
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China; Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing 400042, China
| | - Xin-Fu Zhou
- School of Pharmacy and Medical Sciences and Sansom Institute, Division of Health Sciences, University of South Australia, Adelaide 5001, Australia
| | - Yan-Jiang Wang
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China; Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing 400042, China; State Key Laboratory of Trauma, Burn and Combined Injury, Third Military Medical University, Chongqing 400042, China; Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China.
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15
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Zhu BL, Long Y, Luo W, Yan Z, Lai YJ, Zhao LG, Zhou WH, Wang YJ, Shen LL, Liu L, Deng XJ, Wang XF, Sun F, Chen GJ. MMP13 inhibition rescues cognitive decline in Alzheimer transgenic mice via BACE1 regulation. Brain 2019; 142:176-192. [PMID: 30596903 DOI: 10.1093/brain/awy305] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 10/15/2018] [Indexed: 12/25/2022] Open
Abstract
MMP13 (matrix metallopeptidase 13) plays a key role in bone metabolism and cancer development, but has no known functions in Alzheimer's disease. In this study, we used high-throughput small molecule screening in SH-SY5Y cells that stably expressed a luciferase reporter gene driven by the BACE1 (β-site amyloid precursor protein cleaving enzyme 1) promoter, which included a portion of the 5' untranslated region (5'UTR). We identified that CL82198, a selective inhibitor of MMP13, decreased BACE1 protein levels in cultured neuronal cells. This effect was dependent on PI3K (phosphatidylinositide 3-kinase) signalling, and was unrelated to BACE1 gene transcription and protein degradation. Further, we found that eukaryotic translation initiation factor 4B (eIF4B) played a key role, as the mutation of eIF4B at serine 422 (S422R) or deletion of the BACE1 5'UTR attenuated MMP13-mediated BACE1 regulation. In APPswe/PS1E9 mice, an animal model of Alzheimer's disease, hippocampal Mmp13 knockdown or intraperitoneal CL82198 administration reduced BACE1 protein levels and the related amyloid-β precursor protein processing, amyloid-β load and eIF4B phosphorylation, whereas spatial and associative learning and memory performances were improved. Collectively, MMP13 inhibition/CL82198 treatment exhibited therapeutic potential for Alzheimer's disease, via the translational regulation of BACE1.
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Affiliation(s)
- Bing-Lin Zhu
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing, China
| | - Yan Long
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing, China
| | - Wei Luo
- Department of Medicine, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Zhen Yan
- Department of Physiology and Biophysics, State University of New York at Buffalo, Buffalo, NY, USA
| | - Yu-Jie Lai
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing, China
| | - Li-Ge Zhao
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing, China
| | - Wei-Hui Zhou
- Ministry of Education Key Laboratory of Child Development and Disorders; Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Children's Hospital of Chongqing Medical University, 136 ZhongshanEr Lu, Yuzhong District, Chongqing, China
| | - Yan-Jiang Wang
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Lin-Lin Shen
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Lu Liu
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing, China
| | - Xiao-Juan Deng
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing, China
| | - Xue-Feng Wang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing, China
| | - Fei Sun
- Department of Physiology, Wayne State University School of Medicine, Detroit, MI, USA
| | - Guo-Jun Chen
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing, China
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16
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He MH, Wang YP, Wu EJ, Shen LL, Yang LN, Wang T, Shang LP, Zhu W, Zhan J. Constraining Evolution of Alternaria alternata Resistance to a Demethylation Inhibitor (DMI) Fungicide Difenoconazole. Front Microbiol 2019; 10:1609. [PMID: 31354690 PMCID: PMC6636547 DOI: 10.3389/fmicb.2019.01609] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 06/27/2019] [Indexed: 02/02/2023] Open
Abstract
Evolution of fungicide resistance in plant pathogens is one of major concerns in sustainable plant disease management. In this study, the genetics and potential of developing resistance to a demethylation inhibitor (DMI) fungicide, difenoconazole, in the fungal pathogen Alternaria alternata was investigated using a comparative analysis of genetic variation in molecular (Single Sequence Repeats, SSR) and phenotypic (fungicide tolerance) markers. No difenoconazole resistance was found in the 215 A. alternata isolates sampled from seven different ecological zones in China despite the widespread use of the fungicide for more than 20 years. This result suggests that the risk of developing resistance to difenoconazole in A. alternata is low and we hypothesize that the low risk is likely caused by fitness penalties incurred by resistant mutants and the multiple mechanisms involving in developing resistance. Heritability and plasticity account for ∼24 and 3% of phenotypic variation, respectively, indicating that genetic adaptation by sequence variation plays a more important role in the evolution of difenoconazole resistance than physiological adaptation by altering gene expression. Constraining selection in the evolution of A. alternata resistance to difenoconazole was documented by different patterns of population differentiation and isolate-by-distance between SSR markers and difenoconazole tolerance. Though the risk of developing resistance is low, the findings of significant differences in difenoconazole tolerance among isolates and populations, and a skewing distribution toward higher tolerance suggests that a stepwise accumulation of tolerance to the fungicide might be occurring in the pathogen populations. As a consequence, dynamic management programs guided by evolutionary principles such as spatiotemporal rotations of fungicides with different modes of action are critical to prevent the continued accumulation of tolerance or the evolution of resistance to difenoconazole and other DMI fungicides.
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Affiliation(s)
- Meng-Han He
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory for Biopesticide and Chemical Biology, Ministry of Education, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yan-Ping Wang
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory for Biopesticide and Chemical Biology, Ministry of Education, Fujian Agriculture and Forestry University, Fuzhou, China
| | - E-Jiao Wu
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Lin-Lin Shen
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Li-Na Yang
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou, China
- Fujian Key Laboratory of Plant Virology, Institute of Plant Virology, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Tian Wang
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Li-Ping Shang
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Wen Zhu
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Jiasui Zhan
- Key Laboratory for Biopesticide and Chemical Biology, Ministry of Education, Fujian Agriculture and Forestry University, Fuzhou, China
- Fujian Key Laboratory of Plant Virology, Institute of Plant Virology, Fujian Agriculture and Forestry University, Fuzhou, China
- Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences, Uppsala, Sweden
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17
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Lv ZT, Shen LL, Zhu B, Zhang ZQ, Ma CY, Huang GF, Yin J, Yu LL, Yu SY, Ding MQ, Li J, Yuan XC, He W, Jing XH, Li M. Effects of intensity of electroacupuncture on chronic pain in patients with knee osteoarthritis: a randomized controlled trial. Arthritis Res Ther 2019; 21:120. [PMID: 31088511 PMCID: PMC6518678 DOI: 10.1186/s13075-019-1899-6] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 04/17/2019] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Conditioned pain modulation (CPM) is impaired in people with chronic pain such as knee osteoarthritis (KOA). The purpose of this randomized, controlled clinical trial was to investigate whether strong electroacupuncture (EA) was more effective on chronic pain by strengthening the CPM function than weak EA or sham EA in patients with KOA. METHODS In this multicenter, three-arm parallel, single-blind randomized controlled trial, 301 patients with KOA were randomly assigned. Patients were randomized into three groups based on EA current intensity: strong EA (> 2 mA), weak EA (< 0.5 mA), and sham EA (non-acupoint). Treatments consisted of five sessions per week, for 2 weeks. Primary outcome measures were visual analog scale (VAS), CPM function, and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC). RESULTS Three hundred one patients with KOA were randomly assigned, among which 271 (90.0%) completed the study (mean age 63.93 years old). One week of EA had a clinically important improvement in VAS and WOMAC but not in CPM function. After 2 weeks treatment, EA improved VAS, CPM, and WOMAC compared with baseline. Compared with sham EA, weak EA (3.8; 95% CI 3.45, 4.15; P < .01) and strong EA (13.54; 95% CI 13.23, 13.85; P < .01) were better in improving CPM function. Compared with weak EA, strong EA was better in enhancing CPM function (9.73; 95% CI 9.44, 10.02; P < .01), as well as in reducing VAS and total WOMAC score. CONCLUSION EA should be administered for at least 2 weeks to exert a clinically important effect on improving CPM function of KOA patients. Strong EA is better than weak or sham EA in alleviating pain intensity and inhibiting chronic pain. TRIAL REGISTRATION This study was registered with the Chinese Clinical Trial Registry ( ChiCTR-ICR-14005411 ), registered on 31 October 2014.
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Affiliation(s)
- Zheng-Tao Lv
- Department of Neurobiology, School of Basic Medicine, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, 430030, China.,Department of Orthopedics, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Lin-Lin Shen
- Combined Traditional Chinese and Western Medicine Hospital affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Bing Zhu
- Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | | | | | - Guo-Fu Huang
- Combined Traditional Chinese and Western Medicine Hospital affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Jing Yin
- The Third Hospital of Wuhan, Wuhan, 430060, China
| | - Ling-Ling Yu
- Department of Neurobiology, School of Basic Medicine, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, 430030, China.,Combined Traditional Chinese and Western Medicine Hospital affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Si-Yi Yu
- School of Acupuncture and Moxibustion, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
| | | | - Jing Li
- Union Hospital affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Xiao-Cui Yuan
- Department of Neurobiology, School of Basic Medicine, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Wei He
- Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Xiang-Hong Jing
- Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences, Beijing, 100700, China.
| | - Man Li
- Department of Neurobiology, School of Basic Medicine, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, 430030, China.
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18
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Jiang ZL, Shen LL, Hu YR, Guo JM, Fu LY. [Role and potential value of circular RNAs in the occurrence of primary hepatic cancer]. Zhonghua Gan Zang Bing Za Zhi 2019; 27:157-160. [PMID: 30818925 DOI: 10.3760/cma.j.issn.1007-3418.2019.02.018] [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
Circular RNA is a class of non-coding RNAs, which are covalently closed and circular at both ends, showing dissimilar characteristics from linear RNA. Several studies have shown that circular RNAs play an important role in the occurrence and development of primary hepatic cancer. By combining with the latest research progress of this field at home and abroad, we summarized the mechanism regulating the occurrence and development of liver cancer, abnormal expression, and as potential molecular markers for disease diagnosis and treatment.
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Affiliation(s)
- Z L Jiang
- Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathophysiology, Medical School of Ningbo University, Ningbo 315211, China; Department of Hepatology, Ningbo No.2 Hospital, Ningbo 315020, China
| | - L L Shen
- Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathophysiology, Medical School of Ningbo University, Ningbo 315211, China; Department of Hepatology, Ningbo No.2 Hospital, Ningbo 315020, China
| | - Y R Hu
- Department of Hepatology, Ningbo No.2 Hospital, Ningbo 315020, China; Key Laboratory of Diagnosis and Treatment of Digestive System Tumors of Zhejiang Province, Ningbo 315020, China
| | - J M Guo
- Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathophysiology, Medical School of Ningbo University, Ningbo 315211, China
| | - L Y Fu
- Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathophysiology, Medical School of Ningbo University, Ningbo 315211, China; Department of Hepatology, Ningbo No.2 Hospital, Ningbo 315020, China; Key Laboratory of Diagnosis and Treatment of Digestive System Tumors of Zhejiang Province, Ningbo 315020, China
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19
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Wang J, Jin WS, Bu XL, Zeng F, Huang ZL, Li WW, Shen LL, Zhuang ZQ, Fang Y, Sun BL, Zhu J, Yao XQ, Zeng GH, Dong ZF, Yu JT, Hu Z, Song W, Zhou HD, Jiang JX, Liu YH, Wang YJ. Physiological clearance of tau in the periphery and its therapeutic potential for tauopathies. Acta Neuropathol 2018; 136:525-536. [PMID: 30074071 DOI: 10.1007/s00401-018-1891-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 07/18/2018] [Accepted: 07/18/2018] [Indexed: 02/07/2023]
Abstract
Accumulation of pathological tau is the hallmark of Alzheimer's disease and other tauopathies and is closely correlated with cognitive decline. Clearance of pathological tau from the brain is a major therapeutic strategy for tauopathies. The physiological capacity of the periphery to clear brain-derived tau and its therapeutic potential remain largely unknown. Here, we found that cisterna magna injected 131I-labelled synthetic tau dynamically effluxed from the brain and was mainly cleared from the kidney, blood, and liver in mice; we also found that plasma tau levels in inferior vena cava were lower than those in femoral artery in humans. These findings suggest that tau proteins can efflux out of the brain and be cleared in the periphery under physiological conditions. Next, we showed that lowering blood tau levels via peritoneal dialysis could reduce interstitial fluid (ISF) tau levels in the brain, and tau levels in the blood and ISF were dynamically correlated; furthermore, tau efflux from the brain was accelerated after the addition of another set of peripheral system in a parabiosis model. Finally, we established parabiosis mouse models using tau transgenic mice and their wild-type littermates and found that brain tau levels and related pathologies in parabiotic transgenic mice were significantly reduced after parabiosis, suggesting that chronic enhancement of peripheral tau clearance alleviates pathological tau accumulation and neurodegeneration in the brain. Our study provides the first evidence of physiological clearance of brain-derived pathological tau in the periphery, suggesting that enhancing peripheral tau clearance is a potential therapeutic strategy for tauopathies.
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Affiliation(s)
- Jun Wang
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Wang-Sheng Jin
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Xian-Le Bu
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Fan Zeng
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Zhi-Lin Huang
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Wei-Wei Li
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Lin-Lin Shen
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Zhen-Qian Zhuang
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Yuqiang Fang
- Department of Cardiology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Bin-Lu Sun
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Jie Zhu
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Xiu-Qing Yao
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Gui-Hua Zeng
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Zhi-Fang Dong
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Jin-Tai Yu
- Department of Neurology, Qingdao Municipal Hospital, School of Medicine, Qingdao University, Qingdao, China
| | - Zhian Hu
- Department of Physiology, Collaborative Innovation Center for Brain Science, Third Military Medical University, Chongqing, China
| | - Weihong Song
- Townsend Family Laboratories, Department of Psychiatry, Brain Research Center, The University of British Columbia, Vancouver, BC, V6T 1Z3, Canada
| | - Hua-Dong Zhou
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Jian-Xin Jiang
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Yu-Hui Liu
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China.
| | - Yan-Jiang Wang
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China.
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China.
- Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China.
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20
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Zhuang ZQ, Shen LL, Li WW, Fu X, Zeng F, Gui L, Lü Y, Cai M, Zhu C, Tan YL, Zheng P, Li HY, Zhu J, Zhou HD, Bu XL, Wang YJ. Gut Microbiota is Altered in Patients with Alzheimer’s Disease. J Alzheimers Dis 2018; 63:1337-1346. [PMID: 29758946 DOI: 10.3233/jad-180176] [Citation(s) in RCA: 453] [Impact Index Per Article: 75.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Zhen-Qian Zhuang
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Lin-Lin Shen
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Wei-Wei Li
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Xue Fu
- Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Fan Zeng
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Li Gui
- Department of Neurology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Yang Lü
- Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Min Cai
- Department of Neurology, Chongqing General Hospital, Chongqing, China
| | - Chi Zhu
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Yin-Ling Tan
- Department of Microbiology, Third Military Medical University, Chongqing, China
| | - Peng Zheng
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Hui-Yun Li
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Jie Zhu
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Hua-Dong Zhou
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Xian-Le Bu
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Yan-Jiang Wang
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
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21
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Zou WC, Shen LL, Shen JG, Cai W, Zhan JS, Gao FL. A multigene phylogentic analysis of Potato virus Y and its application in strain identification. Yi Chuan 2017; 39:918-929. [PMID: 29070487 DOI: 10.16288/j.yczz.17-206] [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: 10/31/2022]
Abstract
The objective of this study is to develop a rapid and accurate multigene phylogenetic analysis to identify Potato virus Y (PVY) strains. The phylogenetic relationships of strains within the PVY species were evaluated with isolate-strain association using five datasets of concatenated sequences from the P1, HC-pro, VPg and CP genes to determine the best dataset for PVY strain identification. Results from phylogenetic analyses and Bayesian tip-association significance (BaTS) tests indicated that the major PVY strains could be distinguished using the P1, VPg and CP concatenated sequences datasets but not the remaining concatenated sequence datasets. Phylogenetic trees reconstructed from the concatenated sequences of P1, VPg and CP genes revealed that the ML and NJ trees had broadly similar topologies and that both were better than the maximum clade credibility tree (MCC). Additionally, the full genome of HLJ26, one isolate randomly selected for the multigene phylogenetic analysis, was clustered with high confidence among members of the PVYNTN-NW (SYR-Ⅱ) strain, which includes isolates of SYR-Ⅱ-2-8, SYR-Ⅱ-Be1 and SYR-Ⅱ-DrH. This suggests that it was a PVYNTN-NW (SYR-Ⅱ) isolate. Recombination analysis of this isolate identified four putative recombination joints in the P1, HC-pro/P3, VPg and the 5'-terminus of CP. This pattern is similar to that observed in the genomic structure of PVYNTN-NW (SYR-I), supporting the classification of this isolate as the PVYNTN-NW strain (SYR-Ⅱ). Simultaneously, two expected fragments of approximately 1 000 and 400 bp in size were also amplified from the isolate by a multiplex RT-PCR, consistent with the expected band pattern of the PVYNTN-NW (SYR-Ⅱ) strain. This further supports the utility of the multigene phylogenetic method in identifying PVY strains. We propose that the major PVY strains could be distinguished accurately using multigene phylogenetic analysis based on the concatenated sequences from the P1, VPg and CP genes.
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Affiliation(s)
- Wen-Chao Zou
- Institute of Plant Virology, Fujian Agriculture and Forestry University/Key Laboratory of Plant Virology of Fujian Province, Fuzhou 350002, China
| | - Lin-Lin Shen
- Institute of Plant Virology, Fujian Agriculture and Forestry University/Key Laboratory of Plant Virology of Fujian Province, Fuzhou 350002, China
| | - Jian-Guo Shen
- Inspection & Quarantine Technology Center of Fujian Entry-Exit Inspection and Quarantine Bureau/Fujian Key Laboratory for Technology Research of Inspection and Quarantine, Fuzhou 350001, China
| | - Wei Cai
- Comprehensive Technical Service Center of Fuqing Entry-Exit Inspection and Quarantine Bureau, Fuqing 350300, China
| | - Jia-Sui Zhan
- 1. Institute of Plant Virology, Fujian Agriculture and Forestry University/Key Laboratory of Plant Virology of Fujian Province, Fuzhou 350002, China; 2. Fujian-Taiwan Joint Centre for Ecological Control of Crop Pests, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Fang-Luan Gao
- Institute of Plant Virology, Fujian Agriculture and Forestry University/Key Laboratory of Plant Virology of Fujian Province, Fuzhou 350002, China
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22
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Zhang HH, Tao YN, Jiang MY, Wang J, Chen J, Xia CM, Shen LL, Wang MY, Zhu DN. The protective effects of electro-acupuncture in thoracic surgery on trauma stressed rats involve the rostral ventrolateral medulla and supraoptic nucleus. Brain Res Bull 2017; 134:183-188. [PMID: 28782569 DOI: 10.1016/j.brainresbull.2017.07.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 05/20/2017] [Accepted: 07/31/2017] [Indexed: 02/06/2023]
Abstract
The present study was designed to explore whether the rostral ventrolateral medulla (RVLM) and supraoptic nucleus (SON) were involved in the protective effects of electro-acupuncture (EA) in thoracic surgery on trauma-stressed rats. The rats were randomly divided into a non-stressed group (Control), surgical trauma-stressed group (Trauma), and Neiguan EA applied on the surgical trauma-stressed group (Trauma+EA-PC 6). RVLM neuron discharge was observed by using an in vivo electrophysiological method, and micro-dialysis combining high-performance liquid chromatography with fluorometric detection (HPLC-FD) was used to assess expression of amino acids in the RVLM. Immunohistochemical methods were used to assess c-Fos expression in SON neurons. The trauma of surgical stress was shown to dramatically increase the discharge frequency of RVLM neurons and promote the release of glutamate and taurine in the RVLM. The expression of c-Fos was also significantly increased in the SON of traumatized rats. EA application at Neiguan acupoints significantly suppressed trauma-induced increase of discharge frequency of the RVLM neurons, almost completely suppressed the trauma-induced increase of glutamate release but only very slightly reduced the trauma-enhanced taurine release, and inhibited the increase of c-Fos expression in these SON neurons of traumatized rats. These results indicate that Neiguan EA may improve cardiac function by modulating neurons in the RVLM and the SON in surgically traumatized rats. The taurine-mediated negative feedback may be involved in the protective effect of EA on cardiac function.
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Affiliation(s)
- Huan-Huan Zhang
- Cell Electrophysiology Laboratory, Wannan Medical College, Wuhu 241002, China; Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Yi-Nan Tao
- Cell Electrophysiology Laboratory, Wannan Medical College, Wuhu 241002, China
| | - Mei-Yan Jiang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Jin Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Jun Chen
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Chun-Mei Xia
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Lin-Lin Shen
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Meng-Ya Wang
- Cell Electrophysiology Laboratory, Wannan Medical College, Wuhu 241002, China.
| | - Da-Nian Zhu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China.
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23
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Jin WS, Shen LL, Bu XL, Zhang WW, Chen SH, Huang ZL, Xiong JX, Gao CY, Dong Z, He YN, Hu ZA, Zhou HD, Song W, Zhou XF, Wang YZ, Wang YJ. Peritoneal dialysis reduces amyloid-beta plasma levels in humans and attenuates Alzheimer-associated phenotypes in an APP/PS1 mouse model. Acta Neuropathol 2017; 134:207-220. [PMID: 28477083 DOI: 10.1007/s00401-017-1721-y] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [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: 02/11/2017] [Revised: 05/01/2017] [Accepted: 05/02/2017] [Indexed: 01/02/2023]
Abstract
Clearance of amyloid-beta (Aβ) from the brain is an important therapeutic strategy for Alzheimer's disease (AD). Current studies mainly focus on the central approach of Aβ clearance by introducing therapeutic agents into the brain. In a previous study, we found that peripheral tissues and organs play important roles in clearing brain-derived Aβ, suggesting that the peripheral approach of removing Aβ from the blood may also be effective for AD therapy. Here, we investigated whether peritoneal dialysis, a clinically available therapeutic method for chronic kidney disease (CKD), reduces brain Aβ burden and attenuates AD-type pathologies and cognitive impairments. Thirty patients with newly diagnosed CKD were enrolled. The plasma Aβ concentrations of the patients were measured before and after peritoneal dialysis. APP/PS1 mice were subjected to peritoneal dialysis once a day for 1 month from 6 months of age (prevention study) or 9 months of age (treatment study). The Aβ in the interstitial fluid (ISF) was collected using microdialysis. Behavioural performance, long-term potentiation (LTP), Aβ burden and other AD-type pathologies were measured after 1 month of peritoneal dialysis. Peritoneal dialysis significantly reduced plasma Aβ levels in both CKD patients and APP/PS1 mice. Aβ levels in the brain ISF of APP/PS1 mice immediately decreased after reduction of Aβ in the blood during peritoneal dialysis. In both prevention and treatment studies, peritoneal dialysis substantially reduced Aβ deposition, attenuated other AD-type pathologies, including Tau hyperphosphorylation, glial activation, neuroinflammation, neuronal loss, and synaptic dysfunction, and rescued the behavioural deficits of APPswe/PS1 mice. Importantly, the Aβ phagocytosis function of microglia was enhanced in APP/PS1 mice after peritoneal dialysis. Our study suggests that peritoneal dialysis is a promising therapeutic method for AD, and Aβ clearance using a peripheral approach could be a desirable therapeutic strategy for AD.
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Affiliation(s)
- Wang-Sheng Jin
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Lin-Lin Shen
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Xian-Le Bu
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Wei-Wei Zhang
- Department of Nephrology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Si-Han Chen
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Zhi-Lin Huang
- Ministry of Education Key Laboratory of Child Development and Disorders and Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Jia-Xiang Xiong
- Department of Physiology, Third Military Medical University, Chongqing, China
| | - Chang-Yue Gao
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Zhifang Dong
- Ministry of Education Key Laboratory of Child Development and Disorders and Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Ya-Ni He
- Department of Nephrology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Zhi-An Hu
- Department of Physiology, Third Military Medical University, Chongqing, China
| | - Hua-Dong Zhou
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Weihong Song
- Townsend Family Laboratories, Department of Psychiatry, Center for Brain Health, The University of British Columbia, Vancouver, BC, V6T1Z3, Canada
| | - Xin-Fu Zhou
- School of Pharmacy and Medical Sciences and Sansom Institute, University of South Australia, Adelaide, Australia
| | - Yi-Zheng Wang
- Laboratory of Neural Signal Transduction, Institute of Neuroscience, Chinese Academy of Science, Shanghai, China
| | - Yan-Jiang Wang
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China.
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Chen SH, Bu XL, Jin WS, Shen LL, Wang J, Zhuang ZQ, Zhang T, Zeng F, Yao XQ, Zhou HD, Wang YJ. Altered peripheral profile of blood cells in Alzheimer disease: A hospital-based case-control study. Medicine (Baltimore) 2017; 96:e6843. [PMID: 28538375 PMCID: PMC5457855 DOI: 10.1097/md.0000000000006843] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 04/11/2017] [Accepted: 04/12/2017] [Indexed: 12/19/2022] Open
Abstract
Alzheimer disease (AD) has been made a global priority for its multifactorial pathogenesis and lack of disease-modifying therapies. We sought to investigate the changes of profile of blood routine in AD and its correlation with the disease severity.In all, 92 AD patients and 84 age and sex-matched normal controls were enrolled and their profiles of blood routine were evaluated.Alzheimer disease patients had increased levels of mean corpuscular hemoglobin, mean corpuscular volume, red cell distribution width-standard deviation, mean platelet volume,and decreased levels of platelet distribution width, red blood cell, hematocrit, hemoglobin, lymphocyte, and basophil compared with normal controls.Alterations in quantity and quality of blood cells may be involved in the pathogenesis of AD and contribute to the disease progression.
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Jin WS, Bu XL, Liu YH, Shen LL, Zhuang ZQ, Jiao SS, Zhu C, Wang QH, Zhou HD, Zhang T, Wang YJ. Plasma Amyloid-Beta Levels in Patients with Different Types of Cancer. Neurotox Res 2016; 31:283-288. [PMID: 27913965 DOI: 10.1007/s12640-016-9682-9] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2016] [Revised: 10/24/2016] [Accepted: 10/27/2016] [Indexed: 01/27/2023]
Abstract
Several epidemiological investigations indicate that cancer survivors have a lower risk for Alzheimer's disease (AD) and vice versa. However, the associations between plasma amyloid-beta (Aβ) levels with cancer remain largely unknown. In this case-control study, 110 cancer patients, 70 AD patients, and 70 age- and gender-matched normal controls were recruited. The cancer types include esophagus cancer, colorectal cancer, hepatic cancer, and lung cancer, all of which were reported to be associated with a lower risk for AD. Plasma levels of Aβ40, Aβ42, common pro-inflammatory cytokines, IL-1β, IL-6, TNF-α, IFN-γ, anti-inflammatory IL-4, chemokines, and cytokines MCP-1 were measured with enzyme-linked immunosorbent assay (ELISA) kits. Plasma levels of Aβ40 and Aβ42 in all cancer patients were higher than that in normal controls. More specifically, hepatic cancer patients exhibited significantly higher plasma Aβ levels. No significant difference in plasma Aβ levels was found between chemotherapy and no chemotherapy subgroups. Plasma Aβ levels were not significantly correlated with pro-inflammatory cytokines, anti-inflammatory, chemokines, and cytokines. Peripheral Aβ levels increased in cancer patients, especially in patients with hepatic cancer, independent of chemotherapy and inflammation. Further verification is required for the association between plasma Aβ and cancer.
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Affiliation(s)
- Wang-Sheng Jin
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China
| | - Xian-Le Bu
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China
| | - Yu-Hui Liu
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China
| | - Lin-Lin Shen
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China
| | - Zhen-Qian Zhuang
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China
| | - Shu-Sheng Jiao
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China
| | - Chi Zhu
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China
| | - Qing-Hua Wang
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China
| | - Hua-Dong Zhou
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China
| | - Tao Zhang
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China.
| | - Yan-Jiang Wang
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China.
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26
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Kuang M, Xu W, Cao CX, Shen LL, Chang J, Zhang XL, Chen JF, Tang CJ. Glutathione S-transferase P1 rs1695 A>G polymorphism and breast cancer risk: evidence from a meta-analysis. Genet Mol Res 2016; 15:gmr7771. [PMID: 27323180 DOI: 10.4238/gmr.15027771] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
UNLABELLED Breast cancer (BC) is the most widespread cause of cancer-related deaths in women. Many published studies have assessed the association between the glutathione S-transferase P1 (GSTP1) rs1695 polymorphism and BC risk. However, the effect of the GSTP1 rs1695 polymorphism on BC risk has remained controversial. Therefore, this meta-analysis was conducted to obtain a comprehensive estimation of this association. A total of 20,615 cases and 20,481 controls from thirty-six case-control trials were extracted from an online literature survey. The meta-analysis indicated that the GSTP1 rs1695 A>G polymorphism did not contribute to the susceptibility of BC when the overall population was considered. However, intriguingly, this polymorphism was significantly associated with increased risk of BC in Asian women [GG vs AA: odds ratio (OR) = 1.4, 95% confidence interval (CI): 1.06-1.88, P = 0.02; AG vs AA: OR = 1.08, 95%CI = 1.00-1.16, P = 0.05; GG/AG vs AA: OR = 1.11, 95%CI = 1.04-1.19, P = 0.00]. Moreover, a subgroup analysis based on the source of control groups showed a marked increase in BC susceptibility in hospital-based control subjects (GG vs AA: OR = 1.28, 95%CI = 1.10-1.48, P= 0.00; GG vs AG/AA OR = 1.22, 95%CI = 1.06-1.41, P = 0.00; GG/AG vs AA: OR = 1.10, 95%CI = 1.02-1.18, P = 0.00). In conclusion, our study indicated that the GSTP1 rs1695 A>G polymorphism was correlated with elevated BC risk in Asian women. Our results must be validated with further research.
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Affiliation(s)
- M Kuang
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China.,Department of Oncology, Liyang People's Hospital, Liyang Jiangsu Province, China
| | - W Xu
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - C X Cao
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - L L Shen
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - J Chang
- Department of Oncology, Taixing people's Hospital, Yangzhou University, Taixing, China
| | - X L Zhang
- Department of Oncology, Nantong Tumour Hospital, Nantong University, Nantong, China
| | - J F Chen
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - C J Tang
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
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Gao SH, Wen HZ, Shen LL, Zhao YD, Ruan HZ. Activation of mGluR1 contributes to neuronal hyperexcitability in the rat anterior cingulate cortex via inhibition of HCN channels. Neuropharmacology 2016; 105:361-377. [DOI: 10.1016/j.neuropharm.2016.01.036] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 01/28/2016] [Accepted: 01/28/2016] [Indexed: 01/14/2023]
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Liu CH, Bu XL, Wang J, Zhang T, Xiang Y, Shen LL, Wang QH, Deng B, Wang X, Zhu C, Yao XQ, Zhang M, Zhou HD, Wang YJ. The Associations between a Capsaicin-Rich Diet and Blood Amyloid-β Levels and Cognitive Function. J Alzheimers Dis 2016; 52:1081-8. [DOI: 10.3233/jad-151079] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Jiao SS, Bu XL, Liu YH, Zhu C, Wang QH, Shen LL, Liu CH, Wang YR, Yao XQ, Wang YJ. Sex Dimorphism Profile of Alzheimer's Disease-Type Pathologies in an APP/PS1 Mouse Model. Neurotox Res 2015; 29:256-66. [PMID: 26707129 DOI: 10.1007/s12640-015-9589-x] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 10/06/2015] [Accepted: 12/10/2015] [Indexed: 01/23/2023]
Abstract
Alzheimer's disease (AD) is the most common form of dementia among the elderly, characterized by parenchymal and vascular beta-amyloid (Aβ) burden, tau pathology, neuroinflammation, and loss of neurons and synapses. There is a clear sex difference in the prevalence of AD. However, sex differences in AD-type pathologies have not been systematically documented. Applying 12-month-old female and male APP/PS1 mice as a model, we investigated the sex dimorphism in these major pathological indices. Compared with male APP/PS1 mice, the females exhibited higher parenchymal Aβ burdens, with the sex difference in hippocampus being the most significant. Female APP/PS1 mice had more severe cerebral amyloid angiopathy and subsequent microhemorrhage. In addition, female APP/PS1 mice also showed higher levels of phosphorylated tau and proinflammatory cytokines, more severe astrocytosis and microgliosis, and greater neuronal and synaptic degenerations. The present study systematically described a sex dimorphism in AD-type pathologic indices, suggesting that gender should be taken into account in designing studies involving these pathological indices and when interpreting the relevant findings in those studies.
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Affiliation(s)
- Shu-Sheng Jiao
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Xian-Le Bu
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Yu-Hui Liu
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Chi Zhu
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Qing-Hua Wang
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Lin-Lin Shen
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Cheng-Hui Liu
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Ye-Ran Wang
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Xiu-Qing Yao
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Yan-Jiang Wang
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China.
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Shen LL, Gu DY, Zhao TT, Tang CJ, Xu Y, Chen JF. Implicating the H63D polymorphism in the HFE gene in increased incidence of solid cancers: a meta-analysis. Genet Mol Res 2015; 14:13735-45. [PMID: 26535689 DOI: 10.4238/2015.october.28.36] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
A number of previous studies have demonstrated that the HFE H63D polymorphism is associated with increased risk of incidence multiple types of cancer, including colorectal cancer, breast cancer, liver cancer, pancreatic cancer, and gynecological malignant tumors. However, the clinical outcomes were inconsistent. Therefore, this meta-analysis was conducted to summarize the effect of the H63D variant on the incidence of solid tumor. PubMed and EMBASE databases were searched for articles associating the HFE H63D polymorphism with cancer risk. The relationships were evaluated by calculating the pooled odds ratios (ORs) with 95% confidence intervals (CIs). A total of 28 studies, including 7728 cancer cases and 11,895 controls, were identified. Statistically significant associations were identified between the HFE H63D polymorphism and solid cancer risk (CG vs CC, OR = 1.14, 95%CI = 1.07-1.23, P < 0.001; GG vs CC, OR = 1.28, 95%CI = 1.06-1.55, P = 0.010; CG/GG vs CC, OR = 1.16, 95%CI = 1.08-1.24, P < 0.001; GG vs CC/CG, OR = 1.24, 95%CI = 1.02-1.49, P = 0.027). In the subgroup analysis, we illustrated the effect of the H63D polymorphism on hepatocellular carcinoma and pancreatic cancer risk, particularly in the Asian and African subgroups; however, this was not observed in gynecological malignant tumors. In summary, this analysis provided strong evidence that the HFE H63D polymorphism may play a critical role in the increased aggressiveness of hepatocellular carcinoma and pancreatic cancer.
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Affiliation(s)
- L L Shen
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - D Y Gu
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - T T Zhao
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - C J Tang
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Y Xu
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - J F Chen
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
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Xiang Y, Bu XL, Liu YH, Zhu C, Shen LL, Jiao SS, Zhu XY, Giunta B, Tan J, Song WH, Zhou HD, Zhou XF, Wang YJ. Physiological amyloid-beta clearance in the periphery and its therapeutic potential for Alzheimer's disease. Acta Neuropathol 2015; 130:487-99. [PMID: 26363791 PMCID: PMC4575389 DOI: 10.1007/s00401-015-1477-1] [Citation(s) in RCA: 162] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 08/27/2015] [Accepted: 09/05/2015] [Indexed: 12/31/2022]
Abstract
Amyloid-beta (Aβ) plays a pivotal role in the pathogenesis of Alzheimer’s disease (AD). The physiological capacity of peripheral tissues and organs in clearing brain-derived Aβ and its therapeutic potential for AD remains largely unknown. Here, we measured blood Aβ levels in different locations of the circulation in humans and mice, and used a parabiosis model to investigate the effect of peripheral Aβ catabolism on AD pathogenesis. We found that blood Aβ levels in the inferior/posterior vena cava were lower than that in the superior vena cava in both humans and mice. In addition, injected 125I labeled Aβ40 was located mostly in the liver, kidney, gastrointestinal tract, and skin but very little in the brain; suggesting that Aβ derived from the brain can be cleared in the periphery. Parabiosis before and after Aβ deposition in the brain significantly reduced brain Aβ burden without alterations in the expression of amyloid precursor protein, Aβ generating and degrading enzymes, Aβ transport receptors, and AD-type pathologies including hyperphosphorylated tau, neuroinflammation, as well as neuronal degeneration and loss in the brains of parabiotic AD mice. Our study revealed that the peripheral system is potent in clearing brain Aβ and preventing AD pathogenesis. The present work suggests that peripheral Aβ clearance is a valid therapeutic approach for AD, and implies that deficits in the Aβ clearance in the periphery might also contribute to AD pathogenesis.
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Affiliation(s)
- Yang Xiang
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China
| | - Xian-Le Bu
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China
| | - Yu-Hui Liu
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China
| | - Chi Zhu
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China
| | - Lin-Lin Shen
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China
| | - Shu-Sheng Jiao
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China
| | - Xiao-Yan Zhu
- Department of Laboratory Medicine, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Brian Giunta
- Neuroimmunology Laboratory, Department of Psychiatry and Behavioral Neurosciences, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Jun Tan
- Rashid Laboratory for Developmental Neurobiology, Silver Child Development Center, Department of Psychiatry and Behavioral Neurosciences, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Wei-Hong Song
- Townsend Family Laboratories, Department of Psychiatry, The University of British Columbia, Vancouver, BC, Canada
| | - Hua-Dong Zhou
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China
| | - Xin-Fu Zhou
- School of Pharmacy and Medical Sciences and Sansom Institute, University of South Australia, Adelaide, SA, Australia
| | - Yan-Jiang Wang
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China.
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Bu XL, Cao GQ, Shen LL, Xiang Y, Jiao SS, Liu YH, Zhu C, Zeng F, Wang QH, Wang YR, He Y, Zhou HD, Wang YJ. Serum Amyloid-Beta Levels are Increased in Patients with Chronic Obstructive Pulmonary Disease. Neurotox Res 2015; 28:346-51. [PMID: 26243505 DOI: 10.1007/s12640-015-9552-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [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: 05/27/2015] [Revised: 07/23/2015] [Accepted: 07/30/2015] [Indexed: 02/06/2023]
Abstract
Chronic obstructive pulmonary disease (COPD) is associated with cognitive decline, but the molecular link between COPD and dementia or Alzheimer's disease (AD) remains unclear. This study was aimed to investigate whether serum Aβ levels are correlated with COPD. 77 cognitively normal COPD patients and 45 age- and gender-matched normal controls were admitted to the study. Serum Aβ40 and Aβ42 levels were measured using ELISA kits. Serum C-reactive protein (CRP), interleukin 6 (IL-6), and procalcitonin (PCT) measurements were done using standard laboratory methods. Pulmonary function tests were performed to assess the pulmonary function and determine the degree of lung damage. Significantly increased levels of serum Aβ40, Aβ42, and total Aβ levels were found in patients with COPD in comparison with normal controls. In COPD patients, serum Aβ levels were higher in subjects with serum CRP, IL-6, and PCT upper the limit of normal. Moreover, serum Aβ levels were dramatically higher in COPD patients with worse pulmonary function. Our study suggests that cognitively normal COPD patients may undergo AD-related pathological changes, and COPD might facilitate AD-type pathogenesis.
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Affiliation(s)
- Xian-Le Bu
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China
| | - Guo-Qiang Cao
- Department of Respiratory Medicine, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China
| | - Lin-Lin Shen
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China
| | - Yang Xiang
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China
| | - Shu-Sheng Jiao
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China
| | - Yu-Hui Liu
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China
| | - Chi Zhu
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China
| | - Fan Zeng
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China
| | - Qing-Hua Wang
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China
| | - Ye-Ran Wang
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China
| | - Yong He
- Department of Respiratory Medicine, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China
| | - Hua-Dong Zhou
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China
| | - Yan-Jiang Wang
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing, China.
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Zhang GH, Liu ZL, Zhang BJ, Geng WY, Song NN, Zhou W, Cao YX, Li SQ, Huang ZL, Shen LL. Orexin A activates hypoglossal motoneurons and enhances genioglossus muscle activity in rats. Br J Pharmacol 2015; 171:4233-46. [PMID: 24846570 DOI: 10.1111/bph.12784] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2013] [Revised: 04/28/2014] [Accepted: 05/01/2014] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND AND PURPOSE Orexins have been demonstrated to play important roles in many physiological processes. However, it is not known how orexin A affects the activity of the hypoglossal motoneuron (HMN) and genioglossus (GG) muscle. EXPERIMENTAL APPROACH GG muscle electromyograms (GG-EMG) were recorded in anaesthetized adult rats after orexin A or orexin receptor antagonists were applied to the hypoglossal nucleus, and in adult rats in which orexin neurons were lesioned with the neurotoxin orexin-saporin (orexin-SAP). HMN membrane potential and firing were recorded from neonatal rat brain slices using whole-cell patch clamp after an infusion of orexin A or orexin receptor antagonists. KEY RESULTS Unilateral micro-injection of orexin A (50, 100 or 200 μM) into the hypoglossal nucleus significantly enhanced ipsilateral GG activity in adult rats. Orexin A (4, 20, 100 or 500 nM) depolarized the resting membrane potential and increased the firing rate of HMNs in a dose-dependent manner in the medullary slices of neonatal rats. Both SB 334867, a specific OX1 receptor antagonist and TCS OX2 29, a specific OX2 receptor antagonist not only blocked the depolarized membrane potential and the increased firing rate of HMNs by orexin A in the neonatal model but also attenuated GG-EMG in the adult model. A significant decrease in GG-EMG was observed in adult orexin neuron-lesioned rats compared with sham animals. CONCLUSION AND IMPLICATIONS Orexin A activates OX1 and OX2 receptors within the hypoglossal motor pool and promotes GG activity, indicating that orexin A is involved in controlling respiratory motor activity.
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Affiliation(s)
- G H Zhang
- Department of Physiology and Pathophysiology, Shanghai Medical College of Fudan University, Shanghai, China; Department of Physiology, Basic Medical College of Zhengzhou University, Zhengzhou, China
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Geng WY, Liu ZB, Song NN, Geng WY, Zhang GH, Jin WZ, Li L, Cao YX, Zhu DN, Shen LL. Effects of electroacupuncture at Zusanli (ST36) on inflammatory cytokines in a rat model of smoke-induced chronic obstructive pulmonary disease. J Integr Med 2013; 11:213-9. [PMID: 23743164 DOI: 10.3736/jintegrmed2013024] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE Improvement in lung function was reported after acupuncture treatment of chronic obstructive pulmonary disease (COPD), but little is known about the underlying mechanisms. Because an immune response imbalance could be seen in COPD, we hypothesize that electroacupuncture (EA) may play a role in regulating inflammatory cytokines and contribute to lung protection in a rat model of smoke-induced COPD. METHODS A COPD model using male Sprague-Dawley rats exposed to cigarette smoke was established. The rats were randomly divided into four groups (control, sham, COPD, and COPD plus EA), and COPD model was evaluated by measuring pulmonary pathological changes and lung function. EA was applied to the acupuncture point Zusanli (ST36) for 30 min/d for 14 d in sham and COPD rats. Bronchoalveolar lavage fluid (BALF) was used to measure levels of tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), and malonaldehyde (MDA). RESULTS Compared with the control rats, COPD rats had significant changes in lung resistance (RL) and lung compliance (CL) (both P<0.01), bronchi and bronchiole airway obstruction (P<0.01), and levels of MDA, TNF-α, and IL-1β (P<0.01). There were no significant differences between the control and the sham groups. Compared with the COPD rats, the COPD plus EA rats had decreased RL and increased CL (both P<0.05), and reduced bronchi and bronchiole airway obstruction (P<0.05, P<0.01, respectively), while levels of TNF-α, IL-1β, and MDA in BALF were lowered (P<0.05 and P<0.01, respectively). However, TNF-α and IL-1β levels of the EA group rats remained higher than those of the control group (P<0.05). CONCLUSION EA at ST36 can reduce lung injury in a COPD rat model, and beneficial effects may be related to down-regulation of inflammatory cytokines. The anti-inflammatory and antioxidant effects may prolong the clinical benefit of EA.
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Affiliation(s)
- Wen-ye Geng
- Department of Physiology and Pathophysiology, Shanghai Medical College of Fudan University, Shanghai, China
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Zhang HH, Chen J, Xia CM, Jiang MY, Wang J, Cao YX, Shen LL, Wang MY, Zhu DN. Protective effects of electroacupuncture on cardiac function in rats subjected to thoracic surgery trauma. Brain Res Bull 2012; 89:71-8. [PMID: 22750250 DOI: 10.1016/j.brainresbull.2012.06.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Revised: 06/16/2012] [Accepted: 06/19/2012] [Indexed: 10/28/2022]
Abstract
The present study investigates the protective effects of electroacupuncture (EA) application on cardiac function, while simultaneously exploring the underlying neurobiological mechanisms, in rats that have experienced thoracic surgery-induced stress. Mean arterial and left intraventricular pressures were monitored as indicators of cardiac function. Meanwhile, the immunohistochemistry for c-Fos protein expression and electrophysiology in vitro in brain nuclei, known to regulate cardiac function, provide insights into the effects of EA on the central nervous system. The results show that cardiac function was dramatically suppressed with thoracic surgery trauma, the expression levels of c-Fos in the paraventricular nucleus (PVN) and the rostral ventrolateral medulla (RVLM) significantly increased, the rheobase intensity of the intracellular current injection needed to initiate the action potential decreased, membrane resistance in the PVN neurons significantly increased, and the inductivity of the postsynaptic potentials in the PVN neurons of the surgery-treated rats significantly decreased. EA application at the Neiguan acupoints (PC6) attenuated the decreases in almost all investigated functional parameters of the heart. EA significantly decreased the number of Fos-immunoreactive neurons in the PVN and RVLM, significantly decreased the Max L. slope of the PVN neurons, and increased the inductivity of the postsynaptic potentials in the PVN neurons of the surgery-treated rats. These data indicate the protective effects of EA application on cardiac function in rats that have experienced surgery-induced stress and show that EA application at the Neiguan acupoints may produce its protective effects through the neurons in the PVN and the RVLM.
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Affiliation(s)
- Huan-Huan Zhang
- Department of Physiology and Pathophysiology, Shanghai Medical College of Fudan University, Shanghai, China.
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Liu ZB, Song NN, Geng WY, Jin WZ, Li L, Cao YX, Qian Y, Zhu DN, Shen LL. Orexin-A and respiration in a rat model of smoke-induced chronic obstructive pulmonary disease. Clin Exp Pharmacol Physiol 2011; 37:963-8. [PMID: 20528981 DOI: 10.1111/j.1440-1681.2010.05411.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
1. Orexins are neuropeptides synthesized in the hypothalamus that regulate many physiological functions, including energy homeostasis, stress responses, sleep/wake states etc. It is now emerging that orexins may also regulate breathing, but little is known as to how they do this, particularly in chronic obstructive pulmonary disease (COPD). In the present study, we used a rat model of cigarette smoke-induced COPD to investigate orexin-A expression in the hypothalamus and medulla and its effect on respiration. 2. Sprague-Dawley rats were exposed to cigarette smoke (1 h twice daily) for 12 weeks. Lung function and pathological changes associated with inflammation and emphysema were determined to confirm the validity of the COPD model. 3. Hypothalamic and medullary orexin-A levels, as determined by radioimmunoassay, were higher in smoke-exposed than control rats. Furthermore, the expression of prepro-orexin (PPO) mRNA in the hypothalamus and orexin OX(1) receptor mRNA in the medulla, as determined by real-time quantitative polymerase chain reaction, was higher in smoke-exposed than control rats. 4. The number of orexin-A-positive neurons in the hypothalamus and OX(1) and OX(2) receptor-positive neurons in the ventrolateral medulla was higher in smoke-exposed than control rats. 5. Microinjection of orexin-A (1 μmol/L, 0.1 μL) into the pre-Bötzinger complex enhanced phrenic nerve discharge to a greater extent in smoke-exposed compared with control rats (61% vs 36%, respectively). 6. The findings of the present study demonstrate that the increased respiratory activity in smoke-exposed rats is due to an increase in orexin-A as well as upregulation of orexin receptors in the ventrolateral medulla.
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Affiliation(s)
- Zi-Bing Liu
- Department of Physiology and Pathophysiology, Shanghai Medical College, Fudan University, Shanghai, China
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Jiang MY, Chen J, Wang J, Xiao F, Zhang HH, Zhang CR, Du DS, Cao YX, Shen LL, Zhu DN. Nitric oxide modulates cardiovascular function in the rat by activating adenosine A2A receptors and inhibiting acetylcholine release in the rostral ventrolateral medulla. Clin Exp Pharmacol Physiol 2011; 38:380-6. [DOI: 10.1111/j.1440-1681.2011.05521.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Liu ZB, Shen LL. [The role of orexin neurons in the hypothalamus in regulating respiratory activity]. Sheng Li Ke Xue Jin Zhan 2010; 41:201-204. [PMID: 21416981] [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: 05/30/2023]
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Li X, Fan MX, Li L, Wang J, Shen LL, Cao YX, Zhu DN, Hong Z. Adrenomedullin in the rostral ventrolateral medulla is involved in the regulation of cardiovascular component of defensive responses induced by electrical stimulation of dorsal periaquaductal gray of the midbrain. Sheng Li Xue Bao 2009; 61:347-355. [PMID: 19701586] [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: 05/28/2023]
Abstract
In this study, we used techniques of in situ hybridization, immunohistochemistry, electric stimulation of the dorsal periaquaductal gray of the midbrain (dPAG) and microinjection to investigate the changes of preproadrenomedullin (ppADM) gene expression encoding adrenomedullin (ADM) and ADM-like immunoreactivity (ADM-IR) in the medulla oblongata, especially in the rostral ventrolateral medulla (rVLM) of the rats receiving foot-shock and noise stress for 5 d, and the potential role of ADM in cardiovascular component of defense response in the rVLM. The results showed that ppADM mRNA and ADM-IR were widely distributed throughout the medulla oblongata. Highly labeled neurons were found in the ventrolateral reticular nucleus and hypoglossal nucleus. Moderately labeled neurons were seen in the facial, ambiguus, lateral reticular, paragigantocellular reticular, and inferior olivary nuclei. Weak signal was present over neurons of nucleus of the solitary tract. The expression of ppADM mRNA and ADM-IR increased significantly after foot shock and noise stress for 5 d as compared with that in control group (P<0.01). On the other hand, stimulation of the right dPAG raised the artery pressure (AP) rapidly from (116.4+/-8.9) mmHg to (140.0+/-9.8) mmHg, and heart rate (HR) from (378.0+/-7.5) beats/min to (413.0+/-8.2) beats/min, respectively, in the normotensive rats. After unilaterally microinjection of hADM(22-52) (a specific antagonist of ADM receptor, 1 pmol) into the right rVLM of the normotensive rats for 10 min, the rats received the stimulation of the dPAG again. Then we found that the DeltaAP and DeltaHR were lowered significantly within 60 min compared with those without hADM(22-52) application (P<0.05). After unilaterally microinjection of 0.1 pmol rat ADM (rADM) into the rVLM, dPAG stimulation caused no significant changes in DeltaAP and DeltaHR. Our results that foot-shock and noise stress induced significant increases of ppADM mRNA and ADM-IR in the rVLM, and microinjection of ADM receptor antagonist hADM(22-52) into the rVLM partly blocked the cardiovascular component of stress-defensive response induced by stimulation of the dPAG, suggest that ADM in the rVLM might be an important neurotransmitter or neuroregulator in the regulation of cardiovascular function in the stress-related defensive response.
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Affiliation(s)
- Xia Li
- Department of Internal Neurology, Huashan Hospital Affiliated to Fudan University, Shanghai 200040, China
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Wu GQ, Arzeno NM, Shen LL, Tang DK, Zheng DA, Zhao NQ, Eckberg DL, Poon CS. Chaotic signatures of heart rate variability and its power spectrum in health, aging and heart failure. PLoS One 2009; 4:e4323. [PMID: 19183809 PMCID: PMC2629562 DOI: 10.1371/journal.pone.0004323] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2008] [Accepted: 12/09/2008] [Indexed: 11/29/2022] Open
Abstract
A paradox regarding the classic power spectral analysis of heart rate variability (HRV) is whether the characteristic high- (HF) and low-frequency (LF) spectral peaks represent stochastic or chaotic phenomena. Resolution of this fundamental issue is key to unraveling the mechanisms of HRV, which is critical to its proper use as a noninvasive marker for cardiac mortality risk assessment and stratification in congestive heart failure (CHF) and other cardiac dysfunctions. However, conventional techniques of nonlinear time series analysis generally lack sufficient sensitivity, specificity and robustness to discriminate chaos from random noise, much less quantify the chaos level. Here, we apply a ‘litmus test’ for heartbeat chaos based on a novel noise titration assay which affords a robust, specific, time-resolved and quantitative measure of the relative chaos level. Noise titration of running short-segment Holter tachograms from healthy subjects revealed circadian-dependent (or sleep/wake-dependent) heartbeat chaos that was linked to the HF component (respiratory sinus arrhythmia). The relative ‘HF chaos’ levels were similar in young and elderly subjects despite proportional age-related decreases in HF and LF power. In contrast, the near-regular heartbeat in CHF patients was primarily nonchaotic except punctuated by undetected ectopic beats and other abnormal beats, causing transient chaos. Such profound circadian-, age- and CHF-dependent changes in the chaotic and spectral characteristics of HRV were accompanied by little changes in approximate entropy, a measure of signal irregularity. The salient chaotic signatures of HRV in these subject groups reveal distinct autonomic, cardiac, respiratory and circadian/sleep-wake mechanisms that distinguish health and aging from CHF.
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Affiliation(s)
- Guo-Qiang Wu
- Department of Mechanics and Engineering Science, Fudan University, Shanghai, People's Republic of China
| | - Natalia M. Arzeno
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
| | - Lin-Lin Shen
- Department of Physiology and Pathophysiology, Fudan University, Shanghai, People's Republic of China
| | - Da-Kan Tang
- School of Information Science and Engineering, Fudan University, Shanghai, People's Republic of China
| | - Da-An Zheng
- School of Information Science and Engineering, Fudan University, Shanghai, People's Republic of China
| | - Nai-Qing Zhao
- School of Public Health, Fudan University, Shanghai, People's Republic of China
| | - Dwain L. Eckberg
- Medical College of Virginia at Virginia Commonwealth University, Richmond, Virginia, United States of America
| | - Chi-Sang Poon
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
- * E-mail:
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Xia CM, Shao CH, Xin L, Wang YR, Ding CN, Wang J, Shen LL, Li L, Cao YX, Zhu DN. EFFECTS OF MELATONIN ON BLOOD PRESSURE IN STRESS-INDUCED HYPERTENSION IN RATS. Clin Exp Pharmacol Physiol 2008; 35:1258-64. [DOI: 10.1111/j.1440-1681.2008.05000.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Jiang HN, Qu JM, He LX, Chen XH, Pan J, Li L, Zhu DN, Cao YX, Shen LL. Effects of N(omega)-nitro-L-arginine methyl ester and aminoguanidine on lipopolysaccharide-induced airway hyperresponsiveness in guinea pigs. Chin Med J (Engl) 2008; 121:1693-1697. [PMID: 19024101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023] Open
Abstract
BACKGROUND The down-regulation of constitutive nitric oxide synthase (cNOS) and up-regulation of inducible nitric oxide synthase (iNOS) are associated with the allergen-provocated airway hyperresponsiveness (AHR). This study aimed to determine whether their alteration also plays an important role in the AHR induced by lipopolysaccharide (LPS). METHODS Hartley male guinea pigs, weighing between 250 g and 350 g, were injected with LPS at a dose of 1 mg/kg every 24 hours for three days. A non-selective NOS inhibitor, N(omega)-nitro-L-arginine methyl ester (L-NAME), or a selective inducible NOS inhibitor, aminoguanidine (AG), were used thirty minutes before each injection of LPS. Airway reactions, nitric oxide (NO) production and inflammatory changes were detected 24 hours after the last dose of LPS. RESULTS AG significantly decreased the NO production in the bronchoalveolar lavage fluid (BALF) and sharply reduced the intensity of bronchoconstriction to histamine challenge. L-NAME also significantly decreased the NO production in the BALF, but had no effect on airway reactions or, perhaps, a tendency to enhance the intensity of AHR. CONCLUSIONS The data suggest that inducible NOS contributes to the AHR induced by repetitive intraperitoneal LPS, and constitutive NOS was also involved.
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Affiliation(s)
- Hong-Ni Jiang
- Department of Pulmonary Medicine, Research Institute of Respiratory Disease, Zhongshan Hospital, Fudan University, Shanghai 200032, China
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Xia CM, Chen J, Wang J, Fan MX, Xiao F, Cao YX, Li L, Shen LL, Zhu DN. Differential expressions of nNOS and iNOS in the rostral ventrolateral medulla induced by electroacupuncture in acute myocardial ischemia rats. Sheng Li Xue Bao 2008; 60:453-461. [PMID: 18690386] [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: 05/26/2023]
Abstract
Increasing lines of evidence has been accumulated that nitric oxide (NO) and nitric oxide synthase (NOS) distribute plentifully in the rostral ventrolateral medulla (RVLM) and contribute to cardiovascular regulation. In the present study, the expressions of neuronal and inducible isoform of NOS (nNOS and iNOS) were observed in the RVLM of acute myocardial ischemia (AMI) Wistar rats experienced electroacupuncture (EA) treatment, thereby the cardiovascular effects of NO in the RVLM were investigated and the mechanism of acupuncture effect on AMI was inferred. The results indicated that in the AMI rats, cardiac functions were markedly attenuated with high serum level of brain natriuretic peptide (BNP) and norepinephine (NE), the number of nNOS-immunoreactive cells and nNOS mRNA exprossion in the RVLM area were increased, while those of iNOS were lowered. EA at "Neiguan" acupoints (Pe 6) 30 min daily for successive 5 d resulted in an improvement of the cardiac functions, decreases in NE and BNP levels; it also increased the expression of iNOS and decreased the expression of nNOS in the RVLM. These results suggest that the curative effect of acupuncture on AMI is possibly attributable to the differential regulation of NOS/NO in the RVLM, leading to decreased sympathetic outflow and improvement of cardiac functions.
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Affiliation(s)
- Chun-Mei Xia
- Department of Physiology and Pathophysiology, Shanghai Medical College of Fudan University, Shanghai 200032, China
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Wu GQ, Shen LL, Tang DK, Zheng DA, Poon CS. Circadian rhythms of spectral components of heart rate variability. Conf Proc IEEE Eng Med Biol Soc 2008; 2006:3557-60. [PMID: 17946572 DOI: 10.1109/iembs.2006.260595] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Circadian rhythms of heart rate variability have been widely studied in recent years. However, most previous reports described such rhythms in terms of normalized units of the low- and high-frequency (LF and HF) spectral components. In this study, we analyzed circadian rhythms of spectral components in absolute units and found unexpected results in normal subjects as well as coronary heart disease (CHD) and congestive heart failure (CHF) patient groups. The results indicate that the notion of sympathovagal balance needs to be re-evaluated.
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Affiliation(s)
- G Q Wu
- Dept. of Mech. & Eng. Sci., Fudan Univ., Shanghai.
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Fan MX, Li X, Wang J, Cao YX, Shen LL, Zhu DN. Effect of adrenomedullin on the activity of barosensitive neurons in the rostral ventrolateral medulla of rats. Sheng Li Xue Bao 2006; 58:193-200. [PMID: 16786102] [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: 05/10/2023]
Abstract
To investigate the eletrophysiological effect of rat adrenomedullin (rADM) on barosensitive neurons in the rostral ventrolateral medulla (rVLM) and its potential mechanisms, the extracellular recording and multi-barrel iontophoresis methods were used. Of the 29 barosensitive neurons in the rVLM, 20 neurons demonstrated excitatory response to iontophoretically applied rADM and increased the firing rate from (10.8 +/- 2.7) spikes/s to (14.6 +/- 3.6), (19.8 +/- 4.7) and (31.9 +/- 6.4) spikes/s (P<0.05, n=20) at the current of 30, 60 and 90 nA, respectively. Application of human adrenomedullin (22-52) [hADM (22-52)], a specific antagonist of rADM receptor, distinctly attenuated the augmentation of firing rate induced by rADMjthe firing rate was increased by 15.4% [(11.4 +/- 2.5) spikes/s, P<0.05, n=10]. Another antagonist, human calcitonin gene-related peptide (8-37) [hCGRP (8-37)] had no significant effect on rADM-induced excitation. Other 23 barosensitive neurons were recorded to test the influence of nitric oxide synthase (NOS) inhibitors on the excitatory effect of rADM. In 10 neurons, 7-NiNa (neuronal NOS inhibitor) decreased the firing rate from (10.1 +/- 3.5) spikes/s to (7.5 +/- 2.5), (5.3 +/- 2.1) and (3.1 +/- 1.4) spikes/s (P<0.05, n=10) at the current of 10, 20 and 40 nA, respectively. The excitatory effect of rADM (60 nA, 30 s) during 7-NiNa application was nearly eliminated and the magnitude of firing rate was increased only by 17% of the basal level (6.2 +/- 1.9) spikes/s (P<0.05, n=7). While aminoguanidine (AG, iNOS inhibitor) increased the firing rate at the resting level from (11.5 +/- 5.1) spikes/s to (17.8 +/- 5.6), (22.5 +/- 6.3) and (29.1 +/- 6.4) spikes/s (P<0.05, n=8) at the current of 10, 20 and 40 nA in 8 barosensitive neurons, respectively. When rADM (60 nA, 30 s) was delivered during AG iontophoresis period, the firing rate significantly increased by 60% of the basal level [(22.5 +/- 6.3) spikes/s, n=5]. These results indicate that rADM activates the barosensitive neurons in the rVLM directly and acts as a cardiovascular regulator, and that this function might be mediated by its specific receptor. NO, mainly neuronal NOS-originated might be involved in the excitatory effect of rADM in the rVLM.
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Affiliation(s)
- Ming-Xin Fan
- Department of Physiology and Pathophysiology, Shanghai Medical College of Fudan University, Shanghai 200032, China
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Huang YL, Fan MX, Wang J, Li L, Lu N, Cao YX, Shen LL, Zhu DN. EFFECTS OF ACUPUNCTURE ON nNOS AND iNOS EXPRESSION IN THE ROSTRAL VENTROLATERAL MEDULLA OF STRESS-INDUCED HYPERTENSIVE RATS. ACUPUNCTURE ELECTRO 2005; 30:263-73. [PMID: 16617691 DOI: 10.3727/036012905815901235] [Citation(s) in RCA: 20] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
This study was to observe the changes of the neuronal and inducible nitric oxide synthase (nNOS & iNOS) as well as their mRNAs in the rostral ventrolateral medulla (RVLM) of stress-induced hypertensive rats before and after acupuncture, and thereby to infer the curative mechanism of acupuncture on hypertension. The result indicated that the systolic blood pressure (SBP) of stress group rats was increased significantly (P < 0.01), it was accompanied that the expression of nNOS in the RVLM, including the immunoreactive neuron number (P < 0.05), the optical density (OD) (P < 0.01), and the mRNA (P < 0.01) were obviously elevated, while those of iNOS (P < 0.05, P < 0.01 and P < 0.01) were evidently lowered in the stress-induced hypertensive rats. Electroacupuncture (EA) points at "Zusanli" (St. 36) and "Lanwei" (Extra 37) on the same hindlimb were stimulated by an EA apparatus (Type G6805-2) with dense sparse wave (4-20Hz) and 4mA intensity. EA application could return the SBP (P < 0.05), and the changes on the expression of both nNOS and iNOS (P < 0.05, P < 0.01 and P < 0.01). These results suggest that the curative mechanism of acupuncture on stress-induced hypertension is related to the changes of nNOS and iNOS in the RVLM of rats.
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Affiliation(s)
- Yu-Ling Huang
- Department of Physiology and Pathophysiology, Shanghai Medical College of Fudan University, Shanghai 200032, China
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Li X, Li L, Shen LL, Qian Y, Cao YX, Zhu DN. Changes of adrenomedullin and its receptor components mRNAs expression in the brain stem and hypothalamus-pituitary-adrenal axis of stress-induced hypertensive rats. Sheng Li Xue Bao 2004; 56:723-9. [PMID: 15614422] [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: 05/01/2023]
Abstract
In this study, reverse transcription-polymerase chain reaction (RT-PCR) was used to detect the changes in mRNAs levels of preproadrenomedullin (ppADM) gene encoding adrenomedullin (ADM) and the essential receptor components of ADM, calcitonin receptor-like receptor (CRLR), and the receptor activity modifying protein 2 and 3 (RAMP2 and RAMP3) in the medulla oblongata, hypothalamus, midbrain, pituitary gland and adrenal gland of the stress-induced hypertensive rats. It was shown that chronic foot-shock and noise stress for 15 consecutive days induced a significant increase in systolic blood pressure (SBP) and unique changes in ppADM and its receptor components mRNAs in all areas studied. As compared with the control group, the level of ppADM mRNA, normalized against a glyceraldehydes-3-phosphate dehydrogenase (GAPDH) control, was up-regulated in the hypothalamus-pituitary-adrenal (HPA) axis, but down-regulated in the medulla oblongata and midbrain (P<0.01 and P<0.05, respectively). The relative amount of CRLR mRNA was higher in the hypothalamus than that in other areas. The level of CRLR mRNA expression was significantly increased in the medulla oblongata of the stress group (P<0.01), but decreased in the midbrain (P<0.01) as well as hypothalamus(P<0.05), as compared with that of the control group. Chronic stress for 15 consecutive days produced an increase in the level of RAMP2 mRNA expression in the medulla oblongata (P<0.01) and a decrease in the adrenal gland (P<0.01), as compared with the control. No significant stress-related changes in RAMP2 mRNA were observed in the midbrain, hypothalamus and pituitary gland. The amount of RAMP3 mRNA was relatively higher in the midbrain and hypothalamus than that in the medulla oblongata, adrenal gland and adrenal gland. Stress-induced hypertensive rats exhibited an increased RAMP3 mRNA expression in the hypothalamus and pituitary gland (P<0.01 and P<0.05, respectively) and a decrease in the adrenal gland and midbrain (P<0.05). No significant stress-related change in RAMP3 mRAN was observed in the medulla oblongata. Taken together, our results indicate that the significant changes in ppADM and its receptor components mRNAs expression in the HPA axis and autonomic centers may be related to the development of the stress-induced hypertension. Nevertheless, the pathophysiological significance of brain-derived ADM and its receptors in stress and blood pressure regulation and their roles in stress-induced hypertension still await further investigation.
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Affiliation(s)
- Xia Li
- Department of physiology and pathophysiology, Shanghai Medical Chollege of Fudan University, Shanghai 200032, China
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Wang J, Shen LL, Cao YX, Zhu DN. Effects of electroacupuncture on pressor response to angiotensin-(1-7) by amino acid release in the rostral ventrolateral medulla. ACUPUNCTURE ELECTRO 2003; 28:25-34. [PMID: 12934958 DOI: 10.3727/036012903815901679] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [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: 11/24/2022]
Abstract
Unilateral microinjection of Angiotensin-(1-7)[Ang-(1-7)] into the rostral ventrolateral medulla (RVLM) of anesthetized rats caused an increase in mean arterial pressure (MAP) accompanied by an increased release of excitatory amino acid (EAA) glutamate. In contrast, microinjection of Ang779, a selective antagonist of Ang-(1-7) receptor, into the RVLM caused a decrease in MAP accompanied by a deceased release of EAA glutamate as well as an increased release of inhibitory amino acid (IAA) glycine, taurine and gamma-aminobutyric acid. After electroacupuncture (EA) stimulation at "Zusanli"(St.36) for 20 min, the above effects of Ang-(1-7) or Ang779 attenuated. These results suggest that attenuation of EA on the pressor effect of Ang-(1-7) or the depressor effect of Ang779 may be through regulating the corresponding amino acid neurotransmitter release in the RVLM.
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Affiliation(s)
- Jin Wang
- Department of Physiology and Pathophysiology, Shanghai Medical College of Fudan University, Shanghai 200032, P.R. China
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Xia X, Shen LL, Guo ZP, Liu HK, Walter G. Nanocrystalline alpha-Ni(OH)2 prepared by ultrasonic precipitation. J Nanosci Nanotechnol 2002; 2:45-46. [PMID: 12908319 DOI: 10.1166/jnn.2002.076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Nanocrystalline alpha-Ni(OH)2 was prepared by an ultrasonic precipitation/stirring method. Results of X-ray diffraction, transmission electron microscopy, infrared, and thermogravimetric measurements confirm that the sample obtained is alpha phase. Compared with the sample prepared without ultrasonic stirring, the crystal structure of the alpha phase sample has been changed from beta phase. The crystalline size of the sample is about 20 nm, which is smaller than the sample produced without ultrasonic stirring (70 nm).
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Affiliation(s)
- X Xia
- Institute of Applied Chemistry, Xinjiang University, Urumqi, People's Republic of China
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Abstract
Antineoplastic bis(dioxopiperazine)s, such as meso-2,3-bis(2,6-dioxopiperazin-4-yl)butane (ICRF-193), are widely believed to be only catalytic inhibitors of topoisomerase II. However, topoisomerase inhibitors have little or no antineoplastic activity unless they are topoisomerase poisons, a special subclass of topoisomerase-targeting drugs that stabilize topoisomerase-DNA strand passing intermediates and thus cause the topoisomerase to become a cytotoxic DNA-damaging agent. Here we report that ICRF-193 is a very significant topoisomerase II poison. Detection of topoisomerase II poisoning by ICRF-193 required the use of a chaotropic protein denaturant in the topoisomerase poisoning assays. ICRF-193 caused dose-dependent cross-linking of human topoisomerase IIbeta to DNA and stimulated topoisomerase IIbeta-mediated DNA cleavage at specific sites on (32)P-end-labeled DNA. Human topoisomerase IIalpha-mediated DNA cleavage was stimulated to a lesser extent by ICRF-193. In vivo experiments with MCF-7 cells also showed the requirement of a chaotropic protein denaturant in the assays and selectivity for the beta-isozyme of human topoisomerase II. Studies with two topoisomerase IIbeta-negative cell model systems confirmed significant topoisomerase II poisoning by ICRF-193 in the wild type cells and were consistent with beta-isozyme selectivity. Common use of only the detergent, SDS, in assays may have led to failure to detect topoisomerase II poisoning by ICRF-193 in earlier studies.
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Affiliation(s)
- K C Huang
- Department of Radiology, The Ohio State University College of Medicine, Columbus, Ohio 43210, USA
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