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Hu XH, Yu KY, Li XX, Zhang JN, Jiao JJ, Wang ZJ, Cai HY, Wang L, He YX, Wu MN. Selective orexin 2 receptor blockade alleviates cognitive impairments and the pathological progression of Alzheimer's disease in 3xTg-AD mice. J Gerontol A Biol Sci Med Sci 2024:glae115. [PMID: 38682858 DOI: 10.1093/gerona/glae115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Indexed: 05/01/2024] Open
Abstract
The orexin system is closely related to the pathogenesis of Alzheimer's disease (AD). Orexin-A aggravates cognitive dysfunction and increases amyloid β (Aβ) deposition in AD model mice, but studies of different dual orexin receptor (OXR) antagonists in AD have shown inconsistent results. Our previous study revealed that OX1R blockade aggravates cognitive deficits and pathological progression in 3xTg-AD mice, but the effects of OX2R and its potential mechanism in AD have not been reported. In the present study, OX2R was blocked by oral administration of the selective OX2R antagonist MK-1064, and the effects of OX2R blockade on cognitive dysfunction and neuropsychiatric symptoms in 3xTg-AD mice were evaluated via behavioral tests. Then, immunohistochemistry, western blotting and ELISA were used to detect Aβ deposition, tau phosphorylation and neuroinflammation, and electrophysiological and wheel-running activity recording were recorded to observe hippocampal synaptic plasticity and circadian rhythm. The results showed that OX2R blockade ameliorated cognitive dysfunction, improved LTP depression, increased the expression of PSD-95, alleviated anxiety- and depression-like behaviors and circadian rhythm disturbances in 3xTg-AD mice, and reduced Aβ pathology, tau phosphorylation and neuroinflammation in the brains of 3xTg-AD mice. These results indicated that chronic OX2R blockade exerts neuroprotective effects in 3xTg-AD mice by reducing AD pathology at least partly through improving circadian rhythm disturbance and the sleep-wake cycle and that OX2R might be a potential target for the prevention and treatment of AD; however, the potential mechanism by which OX2R exerts neuroprotective effects on AD needs to be further investigated.
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Affiliation(s)
- Xiao-Hong Hu
- Department of Physiology; Key Laboratory of Cellular Physiology, Ministry of Education; Key Laboratory of Cellular Physiology in Shanxi Province, Shanxi Medical University
| | - Kai-Yue Yu
- Department of Physiology; Key Laboratory of Cellular Physiology, Ministry of Education; Key Laboratory of Cellular Physiology in Shanxi Province, Shanxi Medical University
| | - Xin-Xin Li
- Department of Physiology; Key Laboratory of Cellular Physiology, Ministry of Education; Key Laboratory of Cellular Physiology in Shanxi Province, Shanxi Medical University
| | - Jin-Nan Zhang
- Department of Physiology; Key Laboratory of Cellular Physiology, Ministry of Education; Key Laboratory of Cellular Physiology in Shanxi Province, Shanxi Medical University
| | - Juan-Juan Jiao
- Department of Physiology; Key Laboratory of Cellular Physiology, Ministry of Education; Key Laboratory of Cellular Physiology in Shanxi Province, Shanxi Medical University
| | - Zhao-Jun Wang
- Department of Physiology; Key Laboratory of Cellular Physiology, Ministry of Education; Key Laboratory of Cellular Physiology in Shanxi Province, Shanxi Medical University
| | - Hong-Yan Cai
- Department of Microbiology and Immunology, Shanxi Medical University, Taiyuan, China
| | - Lei Wang
- Department of Geriatrics, Shanxi Bethune Hospital, Taiyuan, China
| | - Ye-Xin He
- Department of Radiology, Shanxi Provincial People's Hospital, Taiyuan, China
| | - Mei-Na Wu
- Department of Physiology; Key Laboratory of Cellular Physiology, Ministry of Education; Key Laboratory of Cellular Physiology in Shanxi Province, Shanxi Medical University
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Ye YC, Chai SF, Li XR, Wu MN, Cai HY, Wang ZJ. Intermittent fasting and Alzheimer's disease-Targeting ketone bodies as a potential strategy for brain energy rescue. Metab Brain Dis 2024; 39:129-146. [PMID: 37823968 DOI: 10.1007/s11011-023-01288-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Accepted: 09/01/2023] [Indexed: 10/13/2023]
Abstract
Alzheimer's disease (AD) lacks effective clinical treatments. As the disease progresses, the cerebral glucose hypometabolism that appears in the preclinical phase of AD gradually worsens, leading to increasingly severe brain energy disorders. This review analyzes the brain energy deficit in AD and its etiology, brain energy rescue strategies based on ketone intervention, the effects and mechanisms of IF, the differences in efficacy between IF and ketogenic diet and the duality of IF. The evidence suggests that brain energy deficits lead to the development and progression of AD pathology. IF, which improves brain energy impairments by promoting ketone metabolism, thus has good therapeutic potential for AD.
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Affiliation(s)
- Yu- Cai Ye
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, People's Republic of China
| | - Shi-Fan Chai
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, People's Republic of China
| | - Xin-Ru Li
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, People's Republic of China
| | - Mei-Na Wu
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, People's Republic of China
| | - Hong-Yan Cai
- Department of Microbiology and Immunology, Shanxi Medical University, Taiyuan, People's Republic of China
| | - Zhao-Jun Wang
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, People's Republic of China.
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Wang ZJ, Li XR, Chai SF, Li WR, Li S, Hou M, Li JL, Ye YC, Cai HY, Hölscher C, Wu MN. Semaglutide ameliorates cognition and glucose metabolism dysfunction in the 3xTg mouse model of Alzheimer's disease via the GLP-1R/SIRT1/GLUT4 pathway. Neuropharmacology 2023; 240:109716. [PMID: 37730113 DOI: 10.1016/j.neuropharm.2023.109716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 09/06/2023] [Accepted: 09/13/2023] [Indexed: 09/22/2023]
Abstract
Disorders of brain glucose metabolism is known to affect brain activity in neurodegenerative diseases including Alzheimer's disease (AD). Furthermore, recent evidence has shown an association between AD and type 2 diabetes. Numerous reports have found that glucagon-like peptide-1 (GLP-1) receptor agonists improve the cognitive behavior and pathological features in AD patients and animals, which may be related to the improvement of glucose metabolism in the brain. However, the mechanism by which GLP-1 agonists improve the brain glucose metabolism in AD patients remains unclear. In this study, we found that SIRT1 is closely related to expression of GLP-1R in hippocampus of 3xTg mice. Therefore, we used semaglutide, a novel GLP-1R agonist currently undergoing two phase 3 clinical trials in AD patients, to observe the effect of SIRT1 after semaglutide treatment in 3XTg mice and HT22 cells, and to explore the mechanism of SIRT1 in the glucose metabolism disorders of AD. The mice were injected with semaglutide on alternate days for 30 days, followed by behavioral experiments including open field test, new object recognition test, and Y-maze. The content of glucose in the brain was also measured by using 18FDG-PET-CT scans. We measured the expression of Aβ and tau in the hippocampus, observed the expression of GLUT4 which is downstream of SIRT1, and tested the Glucose oxidase assay (GOD-POD) and Hexokinase (HK) in HT22 cells. Here, we found in the 3xTg mouse model of AD and in cultured HT22 mouse neurons that SIRT1 signaling is involved in the impairment of glucose metabolism in AD. Semaglutide can increased the expression levels of SIRT1 and GLUT4 in the hippocampus of 3xTg mice, accompanied by an improvement in learning and memory, decreased in Aβ plaques and neurofibrillary tangles. In addition, we further demonstrated that semaglutide improved glucose metabolism in the brain of 3xTg mice in vitro, semaglutide promoted glycolysis and improved glycolytic disorders, and increased the membrane translocation of GLUT4 in cultured HT22 cells. These effects were blocked by the SIRT1 inhibitor (EX527). These findings indicate that semaglutide can regulate the expression of GLUT4 to mediate glucose transport through SIRT1, thereby improving glucose metabolism dysfunction in AD mice and cells. The present study suggests that SIRT1/GLUT4 signaling pathway may be an important mechanism for GLP-1R to promote glucose metabolism in the brain, providing a reliable strategy for effective therapy of AD.
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Affiliation(s)
- Zhao-Jun Wang
- Department of Physiology, Shanxi Medical University, Taiyuan, China; Key Laboratory of Cellular Physiology, Ministry of Education, Taiyuan, China; Key Laboratory of Cellular Physiology in Shanxi Province, Taiyuan, China; Shanxi Key Laboratory of Brain Disease Control, Shanxi Provincial People's Hospital, Taiyuan, China.
| | - Xin-Ru Li
- Department of Physiology, Shanxi Medical University, Taiyuan, China; Key Laboratory of Cellular Physiology, Ministry of Education, Taiyuan, China; Key Laboratory of Cellular Physiology in Shanxi Province, Taiyuan, China
| | - Shi-Fan Chai
- Department of Physiology, Shanxi Medical University, Taiyuan, China; Key Laboratory of Cellular Physiology, Ministry of Education, Taiyuan, China; Key Laboratory of Cellular Physiology in Shanxi Province, Taiyuan, China
| | - Wei-Ran Li
- Department of Physiology, Shanxi Medical University, Taiyuan, China; Key Laboratory of Cellular Physiology, Ministry of Education, Taiyuan, China; Key Laboratory of Cellular Physiology in Shanxi Province, Taiyuan, China
| | - Shuo Li
- Department of Neurology, Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Meng Hou
- Department of Neurology, Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Jia-Lei Li
- Department of Physiology, Shanxi Medical University, Taiyuan, China; Key Laboratory of Cellular Physiology, Ministry of Education, Taiyuan, China; Key Laboratory of Cellular Physiology in Shanxi Province, Taiyuan, China
| | - Yu-Cai Ye
- Department of Physiology, Shanxi Medical University, Taiyuan, China; Key Laboratory of Cellular Physiology, Ministry of Education, Taiyuan, China; Key Laboratory of Cellular Physiology in Shanxi Province, Taiyuan, China
| | - Hong-Yan Cai
- Department of Microbiology and Immunology, School of Basic Medicine, Shanxi Medical University, Taiyuan, China
| | - Christian Hölscher
- Department of Neurology, Second Hospital of Shanxi Medical University, Taiyuan, China; Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou, China
| | - Mei-Na Wu
- Department of Physiology, Shanxi Medical University, Taiyuan, China; Key Laboratory of Cellular Physiology, Ministry of Education, Taiyuan, China; Key Laboratory of Cellular Physiology in Shanxi Province, Taiyuan, China.
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Cai HY, Chen SR, Wang Y, Jiao JJ, Qiao J, Hölscher C, Wang ZJ, Zhang SX, Wu MN. Integrated analysis of the lncRNA-associated ceRNA network in Alzheimer's disease. Gene 2023; 876:147484. [PMID: 37187245 DOI: 10.1016/j.gene.2023.147484] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 11/08/2022] [Revised: 04/07/2023] [Accepted: 05/09/2023] [Indexed: 05/17/2023]
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disease that worsens with age. Long non-coding RNAs (lncRNAs) dysregulation and its associated competing endogenous RNA (ceRNA) network have a potential connection with the occurrence and development of AD. A total of 358 differentially expressed genes (DEGs) were screened via RNA sequencing, including 302 differentially expressed mRNAs (DEmRNAs) and 56 differential expressed lncRNAs (DElncRNAs). Anti-sense lncRNA is the main type of DElncRNA, which plays a major role in the cis and trans regulation. The constructed ceRNA network consisted of 4 lncRNAs (NEAT1, LINC00365, FBXL19-AS1, RAI1-AS1719) and 4 microRNAs (miRNAs) (HSA-Mir-27a-3p, HSA-Mir-20b-5p, HSA-Mir-17-5p, HSA-Mir-125b-5p), and 2 mRNAs (MKNK2, F3). Functional enrichment analysis revealed that DEmRNAs are involved in related biological functions of AD. The co-expressed DEmRNAs (DNAH11, HGFAC, TJP3, TAC1, SPTSSB, SOWAHB, RGS4, ADCYAP1) of humans and mice were screened and verified by real-time quantitative polymerase chain reaction (qRT-PCR). In this study, we analyzed the expression profile of human AD-related lncRNA genes, constructed a ceRNA network, and performed functional enrichment analysis of DEmRNAs between human and mice. The obtained gene regulatory networks and target genes can be used to further analyze AD-related pathological mechanisms to optimize AD diagnosis and treatment.
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Affiliation(s)
- Hong-Yan Cai
- Department of Microbiology and Immunology, Shanxi Medical University, Taiyuan, China; Key Laboratory of Cellular Physiology (Shanxi Medical University), Ministry of Education, Taiyuan, China; Key Laboratory of Cellular Physiology, Shanxi Province, China.
| | - Si-Ru Chen
- Department of Microbiology and Immunology, Shanxi Medical University, Taiyuan, China
| | - Yu Wang
- Department of Microbiology and Immunology, Shanxi Medical University, Taiyuan, China
| | - Juan-Juan Jiao
- Department of Physiology, Shanxi Medical University, Taiyuan, China
| | - Jun Qiao
- Key Laboratory of Cellular Physiology (Shanxi Medical University), Ministry of Education, Taiyuan, China; Department of Rheumatology, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Christian Hölscher
- Academy of Chinese Medical Science, Henan university of Chinese medicine, Zhengzhou, China
| | - Zhao-Jun Wang
- Key Laboratory of Cellular Physiology (Shanxi Medical University), Ministry of Education, Taiyuan, China; Key Laboratory of Cellular Physiology, Shanxi Province, China; Department of Physiology, Shanxi Medical University, Taiyuan, China
| | - Sheng-Xiao Zhang
- Key Laboratory of Cellular Physiology (Shanxi Medical University), Ministry of Education, Taiyuan, China; Department of Rheumatology, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Mei-Na Wu
- Key Laboratory of Cellular Physiology (Shanxi Medical University), Ministry of Education, Taiyuan, China; Key Laboratory of Cellular Physiology, Shanxi Province, China; Department of Physiology, Shanxi Medical University, Taiyuan, China.
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Li YY, Yu KY, Cui YJ, Wang ZJ, Cai HY, Cao JM, Wu MN. Orexin-A aggravates cognitive deficits in 3xTg-AD mice by exacerbating synaptic plasticity impairment and affecting amyloid β metabolism. Neurobiol Aging 2023; 124:71-84. [PMID: 36758468 DOI: 10.1016/j.neurobiolaging.2023.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 01/09/2023] [Accepted: 01/13/2023] [Indexed: 01/19/2023]
Abstract
Dementia is the main clinical feature of Alzheimer's disease (AD). Orexin has recently been linked to AD pathogenesis, and exogenous orexin-A (OXA) aggravates spatial memory impairment in APP/PS1 mice. However, the effects of OXA on other types of cognitive deficits, especially in 3xTg-AD mice exhibiting both plaque and tangle pathologies, have not been reported. Furthermore, the potential electrophysiological mechanism by which OXA affects cognitive deficits and the molecular mechanism by which OXA increases amyloid β (Aβ) levels are unknown. In the present study, the effects of OXA on cognitive functions, synaptic plasticity, Aβ levels, tau hyperphosphorylation, BACE1 and NEP expression, and circadian locomotor rhythm were evaluated. The results showed that OXA aggravated memory impairments and circadian rhythm disturbance, exacerbated hippocampal LTP depression, and increased Aβ and tau pathologies in 3xTg-AD mice by affecting BACE1 and NEP expression. These results indicated that OXA aggravates cognitive deficits and hippocampal synaptic plasticity impairment in 3xTg-AD mice by increasing Aβ production and decreasing Aβ clearance through disruption of the circadian rhythm and sleep-wake cycle.
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Affiliation(s)
- Yi-Ying Li
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education; Key Laboratory of Cellular Physiology in Shanxi Province, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Kai-Yue Yu
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education; Key Laboratory of Cellular Physiology in Shanxi Province, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Yu-Jia Cui
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education; Key Laboratory of Cellular Physiology in Shanxi Province, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Zhao-Jun Wang
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education; Key Laboratory of Cellular Physiology in Shanxi Province, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Hong-Yan Cai
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education; Key Laboratory of Cellular Physiology in Shanxi Province, Shanxi Medical University, Taiyuan, Shanxi, China; Department of Microbiology and Immunology, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Ji-Min Cao
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education; Key Laboratory of Cellular Physiology in Shanxi Province, Shanxi Medical University, Taiyuan, Shanxi, China.
| | - Mei-Na Wu
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education; Key Laboratory of Cellular Physiology in Shanxi Province, Shanxi Medical University, Taiyuan, Shanxi, China.
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Cai HY, Li B, Dang L, Yang J, Man K, Dong CM, Lu Y. [Sulfur dioxide in the caudal ventrolateral medulla reduces blood pressure and heart rate in rats via the glutamate receptor and NOS/cGMP signal pathways]. Sheng Li Xue Bao 2023; 75:27-35. [PMID: 36859832] [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: 03/03/2023]
Abstract
This study was designed to investigate the cardiovascular effects of sulfur dioxide (SO2) in the caudal ventrolateral medulla (CVLM) of anesthetized rats and its mechanism. Different doses of SO2 (2, 20, 200 pmol) or artificial cerebrospinal fluid (aCSF) were injected into the CVLM unilaterally or bilaterally, and the effects of SO2 on blood pressure and heart rate of rats were observed. In order to explore the possible mechanisms of SO2 in the CVLM, different signal pathway blockers were injected into the CVLM before the treatment with SO2 (20 pmol). The results showed that unilateral or bilateral microinjection of SO2 reduced blood pressure and heart rate in a dose-dependent manner (P < 0.01). Moreover, compared with unilateral injection of SO2 (2 pmol), bilateral injection of 2 pmol SO2 produced a greater reduction in blood pressure. Local pre-injection of the glutamate receptor blocker kynurenic acid (Kyn, 5 nmol) or soluble guanylate cyclase (sGC) inhibitor 1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-one (ODQ, 1 pmol) into the CVLM attenuated the inhibitory effects of SO2 on both blood pressure and heart rate. However, local pre-injection of nitric oxide synthase (NOS) inhibitor NG-Nitro-L-arginine methyl ester (L-NAME, 10 nmol) only attenuated the inhibitory effect of SO2 on heart rate but not blood pressure. In conclusion, SO2 in rat CVLM has cardiovascular inhibitory effects, and its mechanism is related to the glutamate receptor and NOS/cGMP signal pathways.
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Affiliation(s)
- Hong-Yan Cai
- Department of Critical Care, Lanzhou University Second Hospital, Lanzhou 730000, China
| | - Bin Li
- Department of General Surgery, Department of Interventional Radiology, The First Hospital of Lanzhou University, Lanzhou 730000, China
| | - Lei Dang
- Department of General Surgery, Department of Interventional Radiology, The First Hospital of Lanzhou University, Lanzhou 730000, China
| | - Jing Yang
- Department of Critical Care, Lanzhou University Second Hospital, Lanzhou 730000, China
| | - Ke Man
- Department of Critical Care, Lanzhou University Second Hospital, Lanzhou 730000, China
| | - Chen-Ming Dong
- Department of Critical Care, Lanzhou University Second Hospital, Lanzhou 730000, China
| | - Yan Lu
- Department of Clinical Laboratory, Gansu Provincial Hospital, Lanzhou 730000, China.
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Gao WR, Hu XH, Yu KY, Cai HY, Wang ZJ, Wang L, Wu MN. Selective orexin 1 receptor antagonist SB-334867 aggravated cognitive dysfunction in 3xTg-AD mice. Behav Brain Res 2023; 438:114171. [PMID: 36280008 DOI: 10.1016/j.bbr.2022.114171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 10/09/2022] [Accepted: 10/20/2022] [Indexed: 11/05/2022]
Abstract
Cognitive dysfunction is the main clinical manifestation of Alzheimer's disease (AD). Previous research found that elevated orexin level in the cerebrospinal fluid was closely related to the course of AD, and orexin-A treatment could increase amyloid β protein (Aβ) deposition and aggravate spatial memory impairment in APP/PS1 mice. Furthermore, recent research found that dual orexin receptor (OXR) antagonist might affect Aβ level and cognitive dysfunction in AD, but the effects of OX1R or OX2R alone is unreported until now. Considering that OX1R is highly expressed in the hippocampus and plays important roles in learning and memory, the effects of OX1R in AD cognitive dysfunction and its possible mechanism should be investigated. In the present study, selective OX1R antagonist SB-334867 was used to block OX1R. Then, different behavioral tests were performed to observe the effects of OX1R blockade on cognitive function of 3xTg-AD mice exhibited both Aβ and tau pathology, in vivo electrophysiological recording and western blot were used to investigate the potential mechanism. The results showed that chronic OX1R blockade aggravated the impairments of short-term working memory, long-term spatial memory and synaptic plasticity in 9-month-old female 3xTg-AD mice, increased levels of soluble Aβ oligomers and p-tau, and decreased PSD-95 expression in the hippocampus of 3xTg-AD mice. These results indicate that the detrimental effects of SB-334867 on cognitive behaviors in 3xTg-AD mice are closely related to the decrease of PSD-95 and depression of in vivo long-term potentiation (LTP) caused by increased Aβ oligomers and p-tau.
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Affiliation(s)
- Wen-Rui Gao
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan 030001, China
| | - Xiao-Hong Hu
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan 030001, China
| | - Kai-Yue Yu
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan 030001, China
| | - Hong-Yan Cai
- Department of Microbiology and Immunology, Shanxi Medical University, Taiyuan 030001, China
| | - Zhao-Jun Wang
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan 030001, China
| | - Lei Wang
- Department of Geriatrics, Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Taiyuan 030032, China.
| | - Mei-Na Wu
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan 030001, China.
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Cai HY, Hou SJ, Wen R, Feng QF, Xi YJ, Zhang SX, Qiao J, Wu MN. Causal Association Between mTOR-Dependent Protein Levels and Alzheimer's Disease: A Mendelian Randomization Study. J Alzheimers Dis 2023; 94:1477-1485. [PMID: 37393500 DOI: 10.3233/jad-230128] [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] [Indexed: 07/03/2023]
Abstract
BACKGROUND Most previous studies supported that the mammalian target of rapamycin (mTOR) is over-activated in Alzheimer's disease (AD) and exacerbates the development of AD. It is unclear whether the causal associations between the mTOR signaling-related protein and the risk for AD exist. OBJECTIVE This study aims to investigate the causal effects of the mTOR signaling targets on AD. METHODS We explored whether the risk of AD varied with genetically predicted AKT, RP-S6K, EIF4E-BP, eIF4E, eIF4A, and eIF4G circulating levels using a two-sample Mendelian randomization analysis. The summary data for targets of the mTOR signaling were acquired from published genome-wide association studies for the INTERVAL study. Genetic associations with AD were retrieved from the International Genomics of Alzheimer's Project. We utilized the inverse variance weighted as the primary approach to calculate the effect estimates. RESULTS The elevated levels of AKT (OR = 0.910, 95% CI=0.840-0.986, p = 0.02) and RP-S6K (OR = 0.910, 95% CI=0.840-0.986, p = 0.02) may decrease the AD risk. In contrast, the elevated eIF4E levels (OR = 1.805, 95% CI=1.002-1.174, p = 0.045) may genetically increase the AD risk. No statistical significance was identified for levels of EIF4-BP, eIF4A, and eIF4G with AD risk (p > 0.05). CONCLUSION There was a causal relationship between the mTOR signaling and the risk for AD. Activating AKT and RP-S6K, or inhibiting eIF4E may be potentially beneficial to the prevention and treatment of AD.
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Affiliation(s)
- Hong-Yan Cai
- Key Laboratory of Cellular Physiology at Shanxi Medical University, Ministry of Education, Taiyuan, Shanxi Province, China
- Department of Microbiology and Immunology, Shanxi Medical University, Taiyuan, Shanxi Province, China
| | - Si-Jia Hou
- Department of Neurology, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi Province, China
| | - Rui Wen
- Key Laboratory of Cellular Physiology at Shanxi Medical University, Ministry of Education, Taiyuan, Shanxi Province, China
- Department of Microbiology and Immunology, Shanxi Medical University, Taiyuan, Shanxi Province, China
| | - Qi-Fan Feng
- Key Laboratory of Cellular Physiology at Shanxi Medical University, Ministry of Education, Taiyuan, Shanxi Province, China
- Department of Microbiology and Immunology, Shanxi Medical University, Taiyuan, Shanxi Province, China
| | - Yu-Jia Xi
- Department of Rheumatology, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi Province, China
- Shanxi Provincial Key Laboratory of Rheumatism Immune Microecology, Taiyuan, Shanxi Province, China
| | - Sheng-Xiao Zhang
- Department of Rheumatology, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi Province, China
- Shanxi Provincial Key Laboratory of Rheumatism Immune Microecology, Taiyuan, Shanxi Province, China
| | - Jun Qiao
- Department of Rheumatology, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi Province, China
- Shanxi Provincial Key Laboratory of Rheumatism Immune Microecology, Taiyuan, Shanxi Province, China
| | - Mei-Na Wu
- Key Laboratory of Cellular Physiology at Shanxi Medical University, Ministry of Education, Taiyuan, Shanxi Province, China
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Cai HY, Yang D, Qiao J, Yang JT, Wang ZJ, Wu MN, Qi JS, Holscher C. Erratum to: A GLP-1/GIP Dual Receptor Agonist DA4-JC Effectively Attenuates Cognitive Impairment and Pathology in the APP/PS1/Tau Model of Alzheimer's Disease. J Alzheimers Dis 2023; 94:1617-1618. [PMID: 37545245 DOI: 10.3233/jad-239006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
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Fang MR, Yan XZ, Ni JL, Gu YG, Meng L, Yuan LC, Cai HY, Wang LR, Qin JW, Cai Q, Zhang Y, Guo SY. Study of pharyngeal airway morphology with CBCT: Benefits of four premolar extraction orthodontic treatments. Niger J Clin Pract 2022; 25:1955-1962. [PMID: 36537450 DOI: 10.4103/njcp.njcp_1815_21] [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] [Indexed: 06/17/2023]
Abstract
BACKGROUND AND AIM Four premolars extractions are routine procedures for correction of malocclusion, but will inevitably lead to a reduction of tongue space, whether this will weaken the pharyngeal airway remains a controversy. PATIENTS AND METHODS Cone-beam computed tomography (CBCT) radiographs of 80 patients who completed four premolar extraction orthodontic treatments were collected and divided into three anteroposterior skeletal groups according to the ANB (angle subspinale to nasion to supramentale) value. Linear, angular, cross-sectional area, and volumetric dimensions of the pharyngeal airway were measured using Dolphin Imaging 11.9 software. One-way analysis of variance and Pearson's correlation coefficient test were performed to assess the intergroup comparisons. Treatment changes were evaluated with two-sample t-tests. RESULTS In intergroup comparisons, vertical linear and cross-sectional area differences were identified in S-Go/N-Me, VD1, VD1/N-Me, VD2/N-Me, AA, OAA and OMINI (p<0.05), while other measurements showed no significant differences. Angle2, the tilting degree of the pharyngeal airway, showed a positive correlation with ANB (p<0.05). As for the treatment changes, a significant increase was found in the pharyngeal airway in the Class I group (OUA p<0.05, VD1 p<0.001, VD2 p<0.05) and Class II group (VD1 p<0.001. VD2, p<0.05), and inversely, a significant decrease was found in the pharyngeal airway in the Class III group (OAA p<0.05, OMINI p<0.05, OUA p<0.05). No volumetric difference was identified. Interestingly, regarding the preoperative pharyngeal airway size, values trended to the mean value significantly. CONCLUSION Four premolar extraction orthodontic treatments did not affect the pharyngeal airway volume except for the vertical liner and cross-sectional area dimensions. The trend of the gold standard suggested a positive influence of four premolar extraction orthodontic treatments.
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Affiliation(s)
- M R Fang
- Jiangsu Key Laboratory of Oral Diseases; Department of Orthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
| | - X Z Yan
- Jiangsu Key Laboratory of Oral Diseases; Department of Orthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
| | - J L Ni
- Jiangsu Key Laboratory of Oral Diseases; Department of Orthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
| | - Y G Gu
- Department of Stomatology, Affiliated Hospital of Lian Yungang, Xuzhou Medical University, Lianyungang, China
| | - L Meng
- Jiangsu Key Laboratory of Oral Diseases; Department of Orthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
| | - L C Yuan
- Jiangsu Key Laboratory of Oral Diseases; Department of Orthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
| | - H Y Cai
- Jiangsu Key Laboratory of Oral Diseases; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
| | - L R Wang
- Jiangsu Key Laboratory of Oral Diseases; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
| | - J W Qin
- Jiangsu Key Laboratory of Oral Diseases; Department of Orthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
| | - Q Cai
- Department of Stomatology, Changhai Hospital, Navy Medical University, Shanghai, China
| | - Y Zhang
- Jiangsu Key Laboratory of Oral Diseases; Department of Orthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
| | - S Y Guo
- Jiangsu Key Laboratory of Oral Diseases; Department of Orthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
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11
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Cai HY, Qiao J, Chen SR, Fan WP. [Mitochondrial calcium uniporter knockdown in hippocampal neurons improved the learning and memory dysfunction of Alzheimer's disease mice]. Sheng Li Xue Bao 2022; 74:715-725. [PMID: 36319095] [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: 06/16/2023]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder, which seriously affects health of the elderly, and is still irreversible up to now. Recent studies have indicated that mitochondrial dysfunction is a direct reason to promote the development of AD. Mitochondrial calcium uniporter (MCU), located in the inner membrane of mitochondria, is a key channel of mitochondrial Ca2+ uptake. Abnormal MCU expression results in imbalance of mitochondrial calcium homeostasis, ultimately leading to mitochondrial dysfunction. The purpose of this study was to determine the effects of MCU knockdown on AD hippocampal neurons and learning and memory function of AD model mice. Lentivirus and adeno-associated virus were used as vectors to transfect shRNA into hippocampal neurons (HT22 cells) and hippocampi of amyloid precursor protein (APP)/presenilin 1 (PS1)/tau AD transgenic mice, respectively, in order to interfere with MCU expression. The cellular activity of HT22 cells was detected by MTS method, and the changes of learning and memory dysfunction in APP/PS1/tau AD transgenic mice were tested by Y maze and Morris water maze. The results showed that MCU knockdown reversed the cellular activity of HT22 cells decreased by amyloid beta protein 1-42 (Aβ1-42) or okadaic acid (OA). Knockdown of MCU in hippocampal neurons improved spontaneous alternation (spatial working memory), decreased escape latency, and increased time in target quadrant and number of platform crossing (spatial reference memory) of the APP/PS1/tau mice. This study suggests that MCU knockdown in hippocampal neurons has anti-AD effect, and it is expected to be a new strategy for prevention and treatment of AD.
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Affiliation(s)
- Hong-Yan Cai
- Department of Microbiology and Immunology, Shanxi Medical University, Taiyuan 030001, China
- Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan 030001, China
- Key Laboratory of Cellular Physiology of Shanxi Province, Shanxi Medical University, Taiyuan 030001, China.
| | - Jing Qiao
- Department of Microbiology and Immunology, Shanxi Medical University, Taiyuan 030001, China
| | - Si-Ru Chen
- Department of Microbiology and Immunology, Shanxi Medical University, Taiyuan 030001, China
| | - Wei-Ping Fan
- Department of Microbiology and Immunology, Shanxi Medical University, Taiyuan 030001, China
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12
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Yang GZ, Gao QC, Li WR, Cai HY, Zhao HM, Wang JJ, Zhao XR, Wang JX, Wu MN, Zhang J, Hölscher C, Qi JS, Wang ZJ. (D-Ser2) oxyntomodulin recovers hippocampal synaptic structure and theta rhythm in Alzheimer's disease transgenic mice. Neural Regen Res 2022; 17:2072-2078. [PMID: 35142699 PMCID: PMC8848598 DOI: 10.4103/1673-5374.335168] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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] [Indexed: 11/17/2022] Open
Abstract
In our previous studies, we have shown that (D-Ser2) oxyntomodulin (Oxm), a glucagon-like peptide 1 (GLP-1) receptor (GLP1R)/glucagon receptor (GCGR) dual agonist peptide, protects hippocampal neurons against Aβ1–42 -induced cytotoxicity, and stabilizes the calcium homeostasis and mitochondrial membrane potential of hippocampal neurons. Additionally, we have demonstrated that (D-Ser2) Oxm improves cognitive decline and reduces the deposition of amyloid-beta in Alzheimer's disease model mice. However, the protective mechanism remains unclear. In this study, we showed that 2 weeks of intraperitoneal administration of (D-Ser2) Oxm ameliorated the working memory and fear memory impairments of 9-month-old 3×Tg Alzheimer's disease model mice. In addition, electrophysiological data recorded by a wireless multichannel neural recording system implanted in the hippocampal CA1 region showed that (D-Ser2) Oxm increased the power of the theta rhythm. In addition, (D-Ser2) Oxm treatment greatly increased the expression level of synaptic-associated proteins SYP and PSD-95 and increased the number of dendritic spines in 3×Tg Alzheimer's disease model mice. These findings suggest that (D-Ser2) Oxm improves the cognitive function of Alzheimer's disease transgenic mice by recovering hippocampal synaptic function and theta rhythm.
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Affiliation(s)
- Guang-Zhao Yang
- Department of Cardiovascular Medicine, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi Province, China
| | - Qi-Chao Gao
- Department of Physiology, Shanxi Medical University; Key Laboratory of Cellular Physiology, Ministry of Education; Key Laboratory of Cellular Physiology in Shanxi Province, Taiyuan, Shanxi Province, China
| | - Wei-Ran Li
- Department of Physiology, Shanxi Medical University; Key Laboratory of Cellular Physiology, Ministry of Education; Key Laboratory of Cellular Physiology in Shanxi Province, Taiyuan, Shanxi Province, China
| | - Hong-Yan Cai
- Department of Microbiology and Immunology, Shanxi Medical University, Taiyuan, Shanxi Province, China
| | - Hui-Min Zhao
- Department of Physiology, Shanxi Medical University; Key Laboratory of Cellular Physiology, Ministry of Education; Key Laboratory of Cellular Physiology in Shanxi Province, Taiyuan, Shanxi Province, China
| | - Jian-Ji Wang
- Department of Physiology, Shanxi Medical University; Key Laboratory of Cellular Physiology, Ministry of Education; Key Laboratory of Cellular Physiology in Shanxi Province, Taiyuan, Shanxi Province, China
| | - Xin-Rui Zhao
- Department of Physiology, Shanxi Medical University; Key Laboratory of Cellular Physiology, Ministry of Education; Key Laboratory of Cellular Physiology in Shanxi Province, Taiyuan, Shanxi Province, China
| | - Jia-Xin Wang
- Department of Physiology, Shanxi Medical University; Key Laboratory of Cellular Physiology, Ministry of Education; Key Laboratory of Cellular Physiology in Shanxi Province, Taiyuan, Shanxi Province, China
| | - Mei-Na Wu
- Department of Physiology, Shanxi Medical University; Key Laboratory of Cellular Physiology, Ministry of Education; Key Laboratory of Cellular Physiology in Shanxi Province, Taiyuan, Shanxi Province, China
| | - Jun Zhang
- Functional Laboratory Center, Shanxi Medical University, Taiyuan, Shanxi Province, China
| | - Christian Hölscher
- Research and Experimental Center, Henan University of Chinese Medicine, Zhengzhou, Henan Province, China
| | - Jin-Shun Qi
- Department of Physiology, Shanxi Medical University; Key Laboratory of Cellular Physiology, Ministry of Education; Key Laboratory of Cellular Physiology in Shanxi Province, Taiyuan, Shanxi Province, China
| | - Zhao-Jun Wang
- Department of Physiology, Shanxi Medical University; Key Laboratory of Cellular Physiology, Ministry of Education; Key Laboratory of Cellular Physiology in Shanxi Province, Taiyuan, Shanxi Province, China
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13
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Yuan L, Zhang J, Guo JH, Holscher C, Yang JT, Wu MN, Wang ZJ, Cai HY, Han LN, Shi H, Han YF, Qi JS. DAla2-GIP-GLU-PAL Protects Against Cognitive Deficits and Pathology in APP/PS1 Mice by Inhibiting Neuroinflammation and Upregulating cAMP/PKA/CREB Signaling Pathways. J Alzheimers Dis 2021; 80:695-713. [PMID: 33579843 DOI: 10.3233/jad-201262] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Alzheimer's disease (AD) is a neurodegenerative disease characterized by progressive decline in cognitive function. Type 2 diabetes mellitus (T2DM) is an important risk factor for AD. Glucose-dependent insulinotropic polypeptide (GIP) has been identified to be effective in T2DM treatment and neuroprotection. OBJECTIVE The present study investigated the neuroprotective effects and possible mechanisms of DAla2GIP-Glu-PAL, a novel long-lasting GIP analogue, in APP/PS1 AD mice. METHODS Multiple behavioral tests were performed to examine the cognitive function of mice. In vivo hippocampus late-phase long-term potentiation (L-LTP) was recorded to reflect synaptic plasticity. Immunohistochemistry and immunofluorescence were used to examine the Aβ plaques and neuroinflammation in the brain. IL-1β, TNF-α, and cAMP/PKA/CREB signal molecules were also detected by ELISA or western blotting. RESULTS DAla2GIP-Glu-PAL increased recognition index (RI) of APP/PS1 mice in novel object recognition test, elevated spontaneous alternation percentage of APP/PS1 mice in Y maze test, and increased target quadrant swimming time of APP/PS1 mice in Morris water maze test. DAla2GIP-Glu-PAL treatment enhanced in vivo L-LTP of APP/PS1 mice. DAla2GIP-Glu-PAL significantly reduced Aβ deposition, inhibited astrocyte and microglia proliferation, and weakened IL-1β and TNF-α secretion. DAla2GIP-Glu-PAL also upregulated cAMP/PKA/CREB signal transduction and inhibited NF-κB activation in the hippocampus of APP/PS1 mice. CONCLUSION DAla2GIP-Glu-PAL can improve cognitive behavior, synaptic plasticity, and central pathological damage in APP/PS1 mice, which might be associated with the inhibition of neuroinflammation, as well as upregulation of cAMP-/PKA/CREB signaling pathway. This study suggests a potential benefit of DAla2GIP-Glu-PAL in the treatment of AD.
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Affiliation(s)
- Li Yuan
- Department of Physiology, Changzhi Medical College, Changzhi, Shanxi, PR China.,Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, Shanxi, PR China
| | - Jun Zhang
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, Shanxi, PR China
| | - Jun-Hong Guo
- Department of Neurology, First Hospital, Shanxi Medical University, Taiyuan, Shanxi, PR China
| | - Christian Holscher
- Research and Experimental Center, Henan University of Chinese Medicine, Zhengzhou, Henan, PR China
| | - Jun-Ting Yang
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, Shanxi, PR China
| | - Mei-Na Wu
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, Shanxi, PR China
| | - Zhao-Jun Wang
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, Shanxi, PR China
| | - Hong-Yan Cai
- Department of Immunology and Microbiology, Shanxi Medical University, Taiyuan, Shanxi, PR China
| | - Ling-Na Han
- Department of Physiology, Changzhi Medical College, Changzhi, Shanxi, PR China
| | - Hui Shi
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, Shanxi, PR China
| | - Yu-Fei Han
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, Shanxi, PR China
| | - Jin-Shun Qi
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, Shanxi, PR China
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14
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Cai HY, Yang D, Qiao J, Yang JT, Wang ZJ, Wu MN, Qi JS, Hölscher C. A GLP-1/GIP Dual Receptor Agonist DA4-JC Effectively Attenuates Cognitive Impairment and Pathology in the APP/PS1/Tau Model of Alzheimer's Disease. J Alzheimers Dis 2021; 83:799-818. [PMID: 34366339 DOI: 10.3233/jad-210256] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
BACKGROUND Alzheimer's disease (AD) is a degenerative disorder, accompanied by progressive cognitive decline, for which there is no cure. Recently, the close correlation between AD and type 2 diabetes mellitus (T2DM) has been noted, and a promising anti-AD strategy is the use of anti-T2DM drugs. OBJECTIVE To investigate if the novel glucagon-like peptide-1 (GLP-1)/glucose-dependent insulinotropic polypeptide (GIP) receptor agonist DA4-JC shows protective effects in the triple APP/PS1/tau mouse model of AD. METHODS A battery of behavioral tests were followed by in vivo recording of long-term potentiation (LTP) in the hippocampus, quantified synapses using the Golgi method, and biochemical analysis of biomarkers. RESULTS DA4-JC improved cognitive impairment in a range of tests and relieved pathological features of APP/PS1/tau mice, enhanced LTP in the hippocampus, increased numbers of synapses and dendritic spines, upregulating levels of post-synaptic density protein 95 (PSD95) and synaptophysin (SYP), normalized volume and numbers of mitochondria and improving the phosphatase and tensin homologue induced putative kinase 1 (PINK1) - Parkin mitophagy signaling pathway, while downregulating amyloid, p-tau, and autophagy marker P62 levels. CONCLUSION DA4-JC is a promising drug for the treatment of AD.
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Affiliation(s)
- Hong-Yan Cai
- Department of Microbiology and Immunology, Shanxi Medical University, Taiyuan, China.,Key Laboratory of Cellular Physiology (Shanxi Medical University), Ministry of Education, Taiyuan, China.,Key Laboratory of Cellular Physiology, Shanxi Province, China
| | - Dan Yang
- Department of Microbiology and Immunology, Shanxi Medical University, Taiyuan, China
| | - Jing Qiao
- Department of Microbiology and Immunology, Shanxi Medical University, Taiyuan, China
| | - Jun-Ting Yang
- Department of Physiology, Shanxi Medical University, Taiyuan, China
| | - Zhao-Jun Wang
- Key Laboratory of Cellular Physiology (Shanxi Medical University), Ministry of Education, Taiyuan, China.,Key Laboratory of Cellular Physiology, Shanxi Province, China.,Department of Physiology, Shanxi Medical University, Taiyuan, China
| | - Mei-Na Wu
- Key Laboratory of Cellular Physiology (Shanxi Medical University), Ministry of Education, Taiyuan, China.,Key Laboratory of Cellular Physiology, Shanxi Province, China.,Department of Physiology, Shanxi Medical University, Taiyuan, China
| | - Jin-Shun Qi
- Key Laboratory of Cellular Physiology (Shanxi Medical University), Ministry of Education, Taiyuan, China.,Key Laboratory of Cellular Physiology, Shanxi Province, China.,Department of Physiology, Shanxi Medical University, Taiyuan, China
| | - Christian Hölscher
- Neuroscience Research Group, Henan University of Chinese Medicine, Zhengzhou, China
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15
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Wang C, Gao WR, Yin J, Wang ZJ, Qi JS, Cai HY, Wu MN. Chronic sleep deprivation exacerbates cognitive and synaptic plasticity impairments in APP/PS1 transgenic mice. Behav Brain Res 2021; 412:113400. [PMID: 34087256 DOI: 10.1016/j.bbr.2021.113400] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 05/27/2021] [Accepted: 05/30/2021] [Indexed: 01/01/2023]
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disorder characterized by cognitive deficits. Sleep deprivation (SD) could lead to memory deficits, and it was a candidate risk factor for AD. However, the effects of chronic SD on the cognitive functions of AD model mice and its possible mechanism are still unclear. In the present study, 8-month-old male APP/PS1 transgenic mice and wild type (WT) littermates were subjected to chronic SD by using the modified multiple platform method (MMPM), with 20 h of SD each day for 21 days. Then, the effects of chronic SD on cognitive functions in APP/PS1 mice were tested by using behavioral tests, the potential mechanisms were investigated by in vivo electrophysiological recording, western blot and immunochemistry. The results showed that chronic SD obviously aggravated the cognitive impairments, exacerbated in vivo hippocampal long-term potentiation (LTP) suppression, reduced the expression level of PSD95, increased amyloid-β (Aβ) protein deposition and overactivated microglia in the hippocampus of APP/PS1 mice. These results indicate that chronic SD exacerbates the cognitive deficits in APP/PS1 mice by accelerating the development of AD pathologies, reducing the expression of PSD95 and aggravating the LTP suppression in hippocampus. At the same time, chronic SD also impaired cognitive functions and synaptic plasticity in WT mice through down-regulating the level of PSD95 and activating microglia. These findings further clarify the electrophysiological and molecular mechanisms of exacerbated cognitive deficits in AD caused by chronic SD.
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Affiliation(s)
- Chun Wang
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, 030001, China
| | - Wen-Rui Gao
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, 030001, China
| | - Jing Yin
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, 030001, China
| | - Zhao-Jun Wang
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, 030001, China
| | - Jin-Shun Qi
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, 030001, China
| | - Hong-Yan Cai
- Department of Microbiology and Immunology, Shanxi Medical University, Taiyuan, 030001, China.
| | - Mei-Na Wu
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, 030001, China.
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Zhou F, Yan XD, Wang C, He YX, Li YY, Zhang J, Wang ZJ, Cai HY, Qi JS, Wu MN. Suvorexant ameliorates cognitive impairments and pathology in APP/PS1 transgenic mice. Neurobiol Aging 2020; 91:66-75. [PMID: 32224066 DOI: 10.1016/j.neurobiolaging.2020.02.020] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [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: 08/05/2019] [Revised: 01/28/2020] [Accepted: 02/22/2020] [Indexed: 02/06/2023]
Abstract
Cognitive impairments and circadian rhythm disorders are the main clinical manifestations of Alzheimer's disease (AD). Orexin has been reported as abnormally elevated in the cerebrospinal fluid of AD patients, accompanied with cognitive impairments. Our recent research revealed that suvorexant, a dual orexin receptor antagonist, could improve behavioral circadian rhythm disorders in 9-month-old APP/PS1 mice. Here we further observed whether suvorexant could ameliorate the cognitive decline in APP/PS1 mice by using behavioral tests, and investigated the possible mechanisms by in vivo electrophysiological recording, western blot, and immunochemistry. The results showed that suvorexant treatment effectively ameliorated the cognitive impairments, alleviated in vivo hippocampal long-term potentiation suppression, restored the circadian phosphorylated CREB expression in the hippocampus, and reduced amyloid-β protein deposition in the hippocampus and cortex in APP/PS1 mice. These results indicate that the neuroprotective effects of suvorexant against AD are involved in the reduction of amyloid-β plaques, improvement of synaptic plasticity, and circadian expression of phosphorylated CREB, suggesting that suvorexant could be beneficial to the prevention and treatment of AD.
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Affiliation(s)
- Fang Zhou
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, People's Republic of China
| | - Xu-Dong Yan
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, People's Republic of China
| | - Chun Wang
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, People's Republic of China
| | - Ye-Xin He
- Department of Radiology, Shanxi Provincial People's Hospital, Taiyuan, People's Republic of China
| | - Yi-Ying Li
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, People's Republic of China
| | - Jun Zhang
- Functional Laboratory Center, Shanxi Medical University, Taiyuan, People's Republic of China
| | - Zhao-Jun Wang
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, People's Republic of China
| | - Hong-Yan Cai
- Department of Microbiology and Immunology, Shanxi Medical University, Taiyuan, People's Republic of China
| | - Jin-Shun Qi
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, People's Republic of China.
| | - Mei-Na Wu
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, People's Republic of China.
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Wang ZJ, Han YF, Zhao F, Yang GZ, Yuan L, Cai HY, Yang JT, Holscher C, Qi JS, Wu MN. A dual GLP-1 and Gcg receptor agonist rescues spatial memory and synaptic plasticity in APP/PS1 transgenic mice. Horm Behav 2020; 118:104640. [PMID: 31765661 DOI: 10.1016/j.yhbeh.2019.104640] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Revised: 11/16/2019] [Accepted: 11/16/2019] [Indexed: 02/07/2023]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disease that severely affects the health and lifespan of the elderly worldwide. Recently, the correlation between AD and type 2 diabetes mellitus (T2DM) has received intensive attention, and a promising new anti-AD strategy is the use of anti-diabetic drugs. Oxyntomodulin (Oxm) is a peptide hormone and growth factor that acts on neurons in the hypothalamus. OXM activates glucagon-like peptide 1 (GLP-1) and glucagon (Gcg) receptors, facilitates insulin signaling and has neuroprotective effects against Aβ1-42-induced cytotoxicity in primary hippocampal neurons. Here, we tested the effects of the protease-resistant analogue (D-Ser2)Oxm on spatial memory and synaptic plasticity and the underlying molecular mechanisms in the APP/PS1 transgenic mouse model of AD. The results showed that (D-Ser2)Oxm not only alleviated the impairments of working memory and long-term spatial memory, but also reduced the number of Aβ plaques in the hippocampus, and reversed the suppression of hippocampal synaptic long-term potentiation (LTP). Moreover, (D-Ser2)Oxm administration significantly increased p-PI3K/p-AKT1 expression and decreased p-GSK3β levels in the hippocampus. These results are the first to show an in vivo neuroprotective role of (D-Ser2)Oxm in APP/PS1 mice, and this role involves the improvement of synaptic plasticity, clearance of Aβ and normalization of PI3K/AKT/GSK3β cell signaling in the hippocampus. This study suggests that (D-Ser2)Oxm holds promise for the prevention and treatment of AD.
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Affiliation(s)
- Zhao-Jun Wang
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, PR China
| | - Yu-Fei Han
- Guangzhou Kingmed Diagnostics, Guangzhou, PR China
| | - Fang Zhao
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, PR China
| | - Guang-Zhao Yang
- Department of Cardiovascular Medicine, The First Hospital of Shanxi Medical University, Taiyuan, PR China
| | - Li Yuan
- Department of Physiology, Changzhi Medical College, Changzhi, PR China
| | - Hong-Yan Cai
- Department of Microbiology and Immunology, Shanxi Medical University, Taiyuan, PR China
| | - Jun-Ting Yang
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, PR China
| | - Christian Holscher
- Neuroscience research group, Henan university of Chinese medicine, Zhengzhou, PR China
| | - Jin-Shun Qi
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, PR China.
| | - Mei-Na Wu
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, PR China.
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18
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Zhang Y, Cai HY, Hu SS, Li JG, Gong QT, Ma WJ, Liu ZY, Zhang L, Zhang L, Zhao S. Interfacial dilational properties of betaines and sulfonate mixtures: Effects of alkyl chain length. J DISPER SCI TECHNOL 2020. [DOI: 10.1080/01932691.2018.1561305] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Yi Zhang
- State Key Laboratory of Enhanced Oil Recovery, Beijing, P. R. China
- PetroChina Research Institute of Petroleum Exploration & Development, Beijing, P. R. China
| | - Hong-Yan Cai
- State Key Laboratory of Enhanced Oil Recovery, Beijing, P. R. China
- PetroChina Research Institute of Petroleum Exploration & Development, Beijing, P. R. China
| | - Song-Shuang Hu
- Yanshan Branch, Beijing Research Institute of Chemical Industry, SINOPEC, Beijing, P. R. China
| | - Jian-Guo Li
- State Key Laboratory of Enhanced Oil Recovery, Beijing, P. R. China
- PetroChina Research Institute of Petroleum Exploration & Development, Beijing, P. R. China
| | - Qing-Tao Gong
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, P. R. China
| | - Wang-Jing Ma
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, P. R. China
| | - Zi-Yu Liu
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, P. R. China
| | - Lei Zhang
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, P. R. China
| | - Lu Zhang
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, P. R. China
| | - Sui Zhao
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, P. R. China
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19
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Cai HY, Chen XY, Hong J. [Clinical study on the reduction of ocular surface bacteria in pre-operative cataract surgery patients by cleansing the eyelid margins]. Zhonghua Yan Ke Za Zhi 2019; 54:445-451. [PMID: 29895119 DOI: 10.3760/cma.j.issn.0412-4081.2018.06.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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 clinical significance of ocular surface bacteria inhibition by cleaning eyelid margins before surgery in cataract patients. Methods: Case-control study. Thirty-five patients (45 eyes) with age-related cataracts who were proposed to receive treatment of Phacoemulsification combined with cataract extraction and intraocular lens implantation at Peking University 3(rd) hospital were included. The experimental group consisted of 9 males and 15 females with the average age of (69.8±11.5). The control group consisted of 6 males and 15 females with the average age of (61.8±16.2). In the experimental group, bacteria samples from the conjunctival sac and eyelid margins were collected at three times separately and were cultured for identification: first sampling was taken prior to application of any type of antimicrobial measures; second sampling was taken after application of lid scrub twice daily for 7 days to cleanse their eyelid margins by the patients;the last sampling was taken after patients' application of Levofloxacin antibiotic eye drops 3 times per day continuously for 3 days prior to surgery. In the control group, bacteria samples from the conjunctival sac and eyelid margins were collected at two times separately and were cultured for identification: first sampling was taken before application of any antimicrobial measures;second sampling was taken after patients' application of only Levofloxacin antibiotic eye drops successively for 3 days before surgery. Then the results of bacteria culture of the two groups above were compared. Results: In the experimental group, according to the eyelid margins bacteria cultures results of the first sampling (taken before application of any antibacterial measures), the total positive rate, positive rate of common bacteria and positive rate of rare bacteria found in the cultures were 83.3% (20/24), 70.8% (17/24), 45.8% (11/24), respectively; according to the bacteria cultures results of the second sampling (tanken after application of lid scrub for cleaning the eyelid margins for 7 days), the total positive rate, positive rate of common bacteria and positive rate of rare bacteria found in the cultures were 58.3% (14/24), 45.8% (11/24), 25% (6/24), respectively;According to the bacteria cultures results of the third sampling (taken after application of antibiotic eye drops for three days), the total positive rate, positive rate of common bacteria and positive rate of rare bacteria found in the cultures were 20.8% (5/24), 20.8% (5/24), 4.2% (1/24), respectively. In the experimental group, we compared the bacterial positive rate of the samples taken after patients' application of antibiotics for 3 days to the bacterial positive rate of the samples taken prior to application of any antibacterial measures to have found that the total positive rate, the positive rates of common bacteria and rare bacteria decreased significantly (P<0.05) and the difference in between are of statistical significance. In the control group, according to the eyelid margins bacteria cultures results of the first sampling (taken before application of any antibacterial measures, the total positive rate, positive rate of common bacteria and positive rate of rare bacteria found in the cultures were 81% (17/21), 66.7% (14/21), 19% (4/21), respectively;According to the bacteria cultures results of the second sampling (taken after the application of antibiotic eye drops for three days), the total positive rate, positive rate of common bacteria and positive rate of rare bacteria found in the cultures were 38.1% (8/21), 14.3% (3/21), 33.3% (7/21) respectively. When comparing the experimental group to the control group, the experimental group yielded significantly better results than the control group for the rate of reduction of rare bacteria in the eyelid margin after using antibiotics for 3 days. This is due to the lid scrub being used with the antibiotics. The difference are of statistical significance (χ(2)=6.518, P=0.017). There was no statistically significant difference between the experimental and control group in terms of the total positive rate as well as the positive rate of common bacteria and rare bacteria in the conjunctival sac. Conclusions: The cleaning of the eyelid and eyelid margin with lid scrub prior to cataract surgery combined with antibiotics eye drops will achieve excellent antibacterial effects for common and rare bacteria in the eyelid and conjunctival sac. The antibacterial effect of using lid scrub with antibiotic eye drops is more favorable than that of using antibiotic eye drops only. However, the lid scrub eyelid hygiene products cannot replace preoperative antibiotics independently. (Chin J Ophthalmology, 2018, 54: 445-451).
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Affiliation(s)
- H Y Cai
- Department of Ophthalmology, Peking University Third Hospital, Beijing 100191, China
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Wu MN, Kong LL, Zhang J, Hu MM, Wang ZJ, Cai HY, Qi JS. Amyloid β protein injection into medial septum impairs hippocampal long-term potentiation and cognitive behaviors in rats. Sheng Li Xue Bao 2018; 70:217-227. [PMID: 29926062] [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: 06/08/2023]
Abstract
The specific loss of cholinergic neurons and the progressive deficits of cognitive function are the most primary characteristics of Alzheimer's disease (AD). Although the neurotoxicity of amyloid β protein (Aβ) in AD has been investigated extensively, it is still unclear whether the Aβ aggregated in the medial septum (MS), a major cholinergic nucleus projecting to the hippocampus, could affect hippocampal synaptic plasticity and further impair the memory behaviors. The present study investigated the effects of Aβ injection into the MS on hippocampal long-term potentiation (LTP) and cognitive behaviors of rats by using Morris water maze (MWM), Y maze and in vivo hippocampal LTP recording. The effects of kainic acid (KA), an agent with specific neurotoxicity to GABAergic neurons, were also observed. The results showed that: (1) Intra-MS injection of Aβ25-35, not KA, impaired spatial learning and memory of rats in classical and reversal MWM tests; (2) Both Aβ25-35 and KA impaired novelty-seeking behavior of rats in Y maze; (3) Intra-MS injection of Aβ25-35, not KA, suppressed in vivo hippocampal LTP in the CA1 region of rats; (4) Both Aβ25-35 and KA did not affect the motor ability in behavioral tests and the hippocampal paired-pulse facilitation (PPF) in electrophysiological recording. These results indicate that intra-MS injection of Aβ could impair spatial memory, cognitive flexibility and exploratory motivation, as well as hippocampal LTP in rats, suggesting that the cholinergic neurons in the MS and the septo-hippocampal projection could be important targets of neurotoxic Aβ, and the specific damage of cholinergic neurons in the MS is likely responsible for the impairments of hippocampal synaptic plasticity and cognitive function in AD.
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Affiliation(s)
- Mei-Na Wu
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan 030001, China
| | - Lin-Lin Kong
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan 030001, China
- Department of Neurology, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China
| | - Jun Zhang
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan 030001, China
| | - Meng-Ming Hu
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan 030001, China
| | - Zhao-Jun Wang
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan 030001, China
| | - Hong-Yan Cai
- Department of Microbiology and Immunology, Shanxi Medical University, Taiyuan 030001, China
| | - Jin-Shun Qi
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan 030001, China.
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Hu Z, Cai HY, Luo YY, Xiao JM, Li L, Guo T. Effect of varying hypoxia reoxygenation times on autophagy of cardiomyocytes. Acta Cir Bras 2018; 33:223-230. [PMID: 29668775 DOI: 10.1590/s0102-865020180030000004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 02/06/2018] [Indexed: 12/11/2022] Open
Abstract
PURPOSE To investigate the impact of different hypoxia reoxygenation (HR) times on autophagy of rat cardiomyocytes (H9C2). METHODS Rat cardiomyocytes were randomly divided into normal control group (group A), hypoxia group (group B), 2 h HR group (group C), 12 h HR group (group D), and 24 h HR group (group E). LC3 II/LC3 I was determined via western blotting, and cell viabilities of cardiomyocytes were measured using methyl thiazolyl tetrazolium (MTT) assay. RESULTS Cell viabilities in HR model groups were significantly lower than those of group A (P<0.05). LC3 II/LC3 I levels in groups B to D were significantly higher than those of group A (P<0.05), and group D showed the highest LC3 II/LC3 I levels. Cell viabilities in groups B to D were significantly lower than those of group A (P<0.05), with group D showing the lowest cell viabilities (P<0.05). CONCLUSIONS Hypoxia can induce autophagy in rat cardiomyocytes, which can be further activated by reoxygenation; most notable after 12 h. Hypoxia-induced cell injury can be aggravated by reoxygenation. The lowest cell viability was observed at 12 h after reoxygenation; however, cell viability can be recovered after 24 h.
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Affiliation(s)
- Zhao Hu
- Department of Cardiology, First Affiliated Hospital, Kunming Medical University, Kunming, China
| | - Hong-Yan Cai
- Department of Cardiology, First Affiliated Hospital, Kunming Medical University, Kunming, China
| | - Yun-Yan Luo
- Department of Cardiology, First Affiliated Hospital, Kunming Medical University, Kunming, China
| | - Jian-Ming Xiao
- Department of Cardiology, First Affiliated Hospital, Kunming Medical University, Kunming, China
| | - Lin Li
- Department of Cardiology, First Affiliated Hospital, Kunming Medical University, Kunming, China
| | - Tao Guo
- Department of Cardiology, First Affiliated Hospital, Kunming Medical University, Kunming, China
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Li T, Jiao JJ, Hölscher C, Wu MN, Zhang J, Tong JQ, Dong XF, Qu XS, Cao Y, Cai HY, Su Q, Qi JS. A novel GLP-1/GIP/Gcg triagonist reduces cognitive deficits and pathology in the 3xTg mouse model of Alzheimer's disease. Hippocampus 2018; 28:358-372. [PMID: 29473979 DOI: 10.1002/hipo.22837] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 02/15/2018] [Accepted: 02/17/2018] [Indexed: 12/15/2022]
Abstract
Type 2 diabetes mellitus (T2DM) is an important risk factor for Alzheimer's disease (AD). Glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP) have been identified to be effective in T2DM treatment and neuroprotection. In this study, we further explored the effects of a novel unimolecular GLP-1/GIP/Gcg triagonist on the cognitive behavior and cerebral pathology in the 7-month-old triple transgenic mouse model of AD (3xTg-AD), and investigated its possible electrophysiological and molecular mechanisms. After chronic administration of the GLP-1/GIP/Gcg triagonist (10 nmol/kg bodyweight, once daily, i.p.) for 30 days, open field, Y maze and Morris water maze tests were performed, followed by in vivo electrophysiological recording, immunofluorescence and Western blotting experiments. We found that the chronic treatment with the triagonist could improve long-term spatial memory of 3xTg-AD mice in Morris water maze, as well as the working memory in Y maze task. The triagonist also alleviated the suppression of long-term potentiation (LTP) in the CA1 region of hippocampus. In addition, the triagonist significantly reduced hippocampal pathological damages, including amyloid-β (Aβ) and phosphorylated tau aggregates, and upregulated the expression levels of S133 p-CREB, T286 p-CAMKII and S9 p-GSK3β in the hippocampus of the 3xTg-AD mice. These results demonstrate for the first time that the novel GLP-1/GIP/Gcg triagonist is efficacious in ameliorating cognitive deficits and pathological damages of 3xTg-AD mice, suggesting that the triagonist might be potentially beneficial in the treatment of AD.
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Affiliation(s)
- Tian Li
- Department of Neurobiology and National Key Discipline of Physiology, Shanxi Medical University, Taiyuan, Shanxi 030001, PR China
| | - Juan-Juan Jiao
- Department of Neurobiology and National Key Discipline of Physiology, Shanxi Medical University, Taiyuan, Shanxi 030001, PR China
| | - Christian Hölscher
- Division of Biomed and Life Sciences, Faculty of Health and Medicine Lancaster University, Lancaster, LA1 4YQ, United Kingdom
| | - Mei-Na Wu
- Department of Neurobiology and National Key Discipline of Physiology, Shanxi Medical University, Taiyuan, Shanxi 030001, PR China
| | - Jun Zhang
- Department of Neurobiology and National Key Discipline of Physiology, Shanxi Medical University, Taiyuan, Shanxi 030001, PR China
| | - Jia-Qing Tong
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, Wisconsin 53226
| | - Xue-Fan Dong
- Department of Neurobiology and National Key Discipline of Physiology, Shanxi Medical University, Taiyuan, Shanxi 030001, PR China
| | - Xue-Song Qu
- Department of Neurobiology and National Key Discipline of Physiology, Shanxi Medical University, Taiyuan, Shanxi 030001, PR China
| | - Yue Cao
- Department of Neurobiology and National Key Discipline of Physiology, Shanxi Medical University, Taiyuan, Shanxi 030001, PR China
| | - Hong-Yan Cai
- Department of Immunology and Microbiology, Shanxi Medical University, Taiyuan, Shanxi, 030001, PR China
| | - Qiang Su
- Department of Neurology, First Hospital, Shanxi Medical University, Taiyuan, Shanxi, 030001, PR China
| | - Jin-Shun Qi
- Department of Neurobiology and National Key Discipline of Physiology, Shanxi Medical University, Taiyuan, Shanxi 030001, PR China
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Affiliation(s)
- ZM Chen
- Ministry of Agricultural, China
| | | | | | - S Zhang
- Ministry of Agricultural, China
| | - HY Cai
- Ministry of Agricultural, China
| | - GH Liu
- Ministry of Agricultural, China
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Cai HY, Yang JT, Wang ZJ, Zhang J, Yang W, Wu MN, Qi JS. Lixisenatide reduces amyloid plaques, neurofibrillary tangles and neuroinflammation in an APP/PS1/tau mouse model of Alzheimer's disease. Biochem Biophys Res Commun 2017; 495:1034-1040. [PMID: 29175324 DOI: 10.1016/j.bbrc.2017.11.114] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [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: 11/11/2017] [Accepted: 11/18/2017] [Indexed: 02/06/2023]
Abstract
Type 2 diabetes mellitus (T2DM) has been identified as a high risk factor for Alzheimer's disease (AD). The impairment of insulin signaling has been found in AD brain. Glucagon-like peptide-1 (GLP-1) is an incretin hormone, normalises insulin signaling and acts as a neuroprotective growth factor. We have previously shown that the long-lasting GLP-1 receptor (GLP-1R) agonist lixisenatide plays an important role in memory formation, synaptic plasticity and cell proliferation of rats. In the follow-up study, we analysed the neuroprotective effect and mechanism of lixisenatide, injected for 60 days at 10 nmol/kg i.p. once daily in APP/PS1/tau female mice and C57BL/6J female mice (as control) aged 12 month. The results showed that lixisenatide could reduce amyloid plaques, neurofibrillary tangles and neuroinflammation in the hippocampi of 12-month-old APP/PS1/tau female mice; activation of PKA-CREB signaling pathway and inhibition of p38-MAPK might be the important mechanisms in the neuroprotective function of lixisenatide. The study demonstrated that GLP-1R agonists such as lixisenatide might have the potential to be developed as a novel therapy for AD.
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Affiliation(s)
- Hong-Yan Cai
- Department of Microbiology and Immunology, Shanxi Medical University, 56 Xinjian South Road, Taiyuan, Shanxi Province, 030001, China.
| | - Jun-Ting Yang
- Department of Physiology, Shanxi Medical University, 56 Xinjian South Road, Taiyuan, Shanxi Province, 030001, China.
| | - Zhao-Jun Wang
- Department of Physiology, Shanxi Medical University, 56 Xinjian South Road, Taiyuan, Shanxi Province, 030001, China.
| | - Jun Zhang
- Department of Physiology, Shanxi Medical University, 56 Xinjian South Road, Taiyuan, Shanxi Province, 030001, China.
| | - Wei Yang
- Department of Physiology, Shanxi Medical University, 56 Xinjian South Road, Taiyuan, Shanxi Province, 030001, China.
| | - Mei-Na Wu
- Department of Physiology, Shanxi Medical University, 56 Xinjian South Road, Taiyuan, Shanxi Province, 030001, China.
| | - Jin-Shun Qi
- Department of Physiology, Shanxi Medical University, 56 Xinjian South Road, Taiyuan, Shanxi Province, 030001, China.
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Zhang SX, Cai HY, Ma XW, Yuan L, Zhang J, Wang ZJ, Li YF, Qi JS. GLP-1 analogue CJC-1131 prevents amyloid β protein-induced impirments of spatial memory and synaptic plasticity in rats. Behav Brain Res 2017; 326:237-243. [DOI: 10.1016/j.bbr.2017.03.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 03/04/2017] [Accepted: 03/08/2017] [Indexed: 11/27/2022]
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Xie FJ, Chai C, Zhu P, Li B, Cai HY, Lu Y, Cao N. The cardiovascular functions of salusin-β mediated by muscarinic receptors, glutamate receptors or L-type calcium channels within the rostral ventrolateral medulla of rats. Microsc Res Tech 2017; 80:812-819. [PMID: 28371124 DOI: 10.1002/jemt.22868] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 12/29/2016] [Revised: 02/26/2017] [Accepted: 03/12/2017] [Indexed: 01/20/2023]
Abstract
Salusin-α and salusin-β are newly identified bioactive peptides of 28 and 20 amino acids, respectively, that were initially predicted using in silico analyses and are widely distributed in the endocrine system, hematopoietic system, and central nervous system. The goal of our study was to investigate the cardiovascular effect of salusin-β microinjections into the rostral ventrolateral medulla (RVLM) in anesthetized rats and study their mechanism of action. Microinjection of the artificial cerebrospinal fluid (aCSF) into the RVLM did not affect the blood pressure (BP) or heart rate (HR) in anesthetized rats. Topical application of salusin-β into the RVLM produced a dose-dependently increase of BP in anesthetized rats. Microinjection of higher dose salusin-β produced significant tachycardia. Prior application of the L-NAME into the RVLM of rats did not alter the hypertension and tachycardia induced by intra-RVLM salusin-β. Notable, the cardiovascular functions elicited by intra-RVLM salusin-β were significantly decreased by pretreatment with Nic, KYN and atropine. In conclusion, the present study shows that the hypertension and tachycardia induced by intra-RVLM salusin-β might be partly mediated, at least in our opinion, by muscarinic receptors, glutamate receptors or L-type calcium channels.
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Affiliation(s)
- Fu-Jia Xie
- Department of General Surgery, First Hospital of Lanzhou University, 1 DongGang West Road, Lanzhou, 730000, China
| | - Chen Chai
- Department of General Surgery, First Hospital of Lanzhou University, 1 DongGang West Road, Lanzhou, 730000, China
| | - Ping Zhu
- Department of Clinical Laboratory, San Ai Tang Hospital, 74 Jing-Ning Road, Lanzhou, 730030, China
| | - Bin Li
- Department of General Surgery, First Hospital of Lanzhou University, 1 DongGang West Road, Lanzhou, 730000, China
| | - Hong-Yan Cai
- Intensive Care Unit, Lanzhou University Second Hospital, Lanzhou, 730000, China
| | - Yan Lu
- Department of Clinical Laboratory, San Ai Tang Hospital, 74 Jing-Ning Road, Lanzhou, 730030, China
| | - Nong Cao
- Department of General Surgery, First Hospital of Lanzhou University, 1 DongGang West Road, Lanzhou, 730000, China
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Jiang H, Zhao L, Yang L, Cai HY. [Relationships among illness perceptions, medication beliefs and medication adherence in primary angle closure glaucoma patients]. Zhonghua Yan Ke Za Zhi 2017; 53:109-114. [PMID: 28260361 DOI: 10.3760/cma.j.issn.0412-4081.2017.02.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the relationships among illness perception, medication beliefs and medication adherence in primary angle closure glaucoma patients. Methods: It was a cross-sectional study. Morisky 8-item Medication Adherence Questionnaire Chinese Revised, the Brief Illness Perceptions Questionnaire, the Specific Section of the Beliefs about Medicine Questionnaire Chinese Revised were administered to 156 primary angle closure glaucoma patients from Tianjin Eye Hospital. Chi-square test was used to analyze the types of glaucoma, gender, prescription complexity, medicine schedule, other disease and course of disease between the group of adherence and non-adherence. Pearson correlation method was used to analyze the correlations among the illness perception, necessity belief, concerns belief and medication adherence. Structural equation model was used to analyze the mediational role of medication belief between illness perception and medication adherence. Results: In the 156 primary angle closure glaucoma patients being investigated, 37 male and 119 female, the average age was (61.3±8.3) years old. The medication adherence of patients was 83 (53.2%) , the medication non-adherence of patients was 73 (46.8%) . It was showed that prescription complexity and medicine schedule were significantly correlated with medicine adherence (χ(2)=13.64, 11.31; P<0.05); gender, other disease and course of disease were not correlated with medication adherence (χ(2)=1.02, 1.73, 6.08; P>0.05). The scores of illness perception were positively correlated with the necessity belief of medication scores, the scores of concerns belief (r=0.18、0.45, P<0.05), and were negatively associated with medication adherence (r=-0.22, P<0.01). The concerns belief of medication scores were negatively correlated with the medication adherence (r=-0.47, P<0.01). Concerns belief mediates the relationship between illness perception and medication adherence wholly (χ(2)/df=1.73, RMSEA=0.069, NNFI=0.98, CFI=0.98, IFI=0.98) . Conclusions: The types of medicines and the number of glaucoma medication used have a significant influence to the medication adherence in the patients with primary angle closure glaucoma. The patients with greater illness perception performed greater non-adherence can be explained by their higher concerns blief. (Chin J Ophthalmol, 2017, 53: 109-114).
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Affiliation(s)
- H Jiang
- Tianjin Eye Hospital, Tianjin Key Laboratory of Ophthalmology and Visual Science, Tianjin Eye Institute, Clinical College of Ophthalmology, Tianjin Medical University, Tianjin 300020, China
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Liu W, Liu GH, Liao RB, Chang YL, Huang XY, Wu YB, Yang HM, Yan HJ, Cai HY. Apparent metabolizable and net energy values of corn and soybean meal for broiler breeding cocks. Poult Sci 2017; 96:135-143. [PMID: 27287380 DOI: 10.3382/ps/pew195] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [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] [Revised: 01/20/2016] [Accepted: 04/18/2016] [Indexed: 11/20/2022] Open
Abstract
The AME and net energy (NE) values of 4 corn varieties, including 2 normal corn varieties (Zheng Dan 958 and Xian Yu 335), and one each of waxy corn and sweet corn, and 2 soybean meal samples including regular (RSBM) and dehulled soybean meal (DSBM), were determined in 2 experiments for broiler breeding cocks using the indirect calorimetry method. The 4 test diets in Experiment 1 consisted of each test corn, which replaced 40% of the corn-soybean meal basal diet, and the test diets in Experiment 2 contained 25% RSBM or DSBM, which was used to replace the corn basal diet. Thirty (Experiment 1) or 18 (Experiment 2) 50-week-old Arbor Acre (AA) broiler breeding cocks were used in a completely randomized design. After a 7 d dietary adaptation period, 6 birds as replicates from each treatment were assigned to individual respiration chambers for energy measurement via gaseous exchange and total excreta collection for 10 d. In Experiment 1, the AME, ME intake (MEI), retained energy (RE), NE, and NE:AME ratio values were higher (P < 0.001) in the test diets as compared with the corn-soybean meal basal diet. The AME and NE values in the sweet corn diet were higher (P < 0.05) than those values in the other 3 test diets. The heat production (HP), fasting heat production (FHP), and respiration quotient (RQ) were not influenced by the various experimental diets. The respective AME and NE values were 3,785, 3,775, 3,738, and 3,997 kcal/kg (DM basis), and 2,982, 3,006, 2,959, and 3,146 kcal/kg (DM basis) for Zheng Dan 958, Xian Yu 335, waxy corn, and sweet corn. Birds fed a corn basal diet in Experiment 2 had higher AME, MEI, RE, NE, and NE:AME ratio values (P < 0.001). Soybean meal substitution had no effect on HP, FHP, or RQ. The average AME and NE content was 2,492 and 1,581 kcal/kg (DM basis) for RSBM, and 2,580 and 1,654 kcal/kg (DM basis) for DSBM, respectively.
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Affiliation(s)
- W Liu
- The key laboratory of feed biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing, China
| | - G H Liu
- The key laboratory of feed biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing, China
| | - R B Liao
- The key laboratory of feed biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing, China
| | - Y L Chang
- The key laboratory of feed biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing, China
| | - X Y Huang
- The key laboratory of feed biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing, China
| | - Y B Wu
- The key laboratory of feed biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing, China
| | - H M Yang
- Jilin Academy of Agricultural Sciences, 1363 Caiyu Street, Changchun, China
| | - H J Yan
- The key laboratory of feed biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing, China
| | - H Y Cai
- The key laboratory of feed biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing, China
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Yue XH, Tong JQ, Wang ZJ, Zhang J, Liu X, Liu XJ, Cai HY, Qi JS. Steroid sulfatase inhibitor DU-14 protects spatial memory and synaptic plasticity from disruption by amyloid β protein in male rats. Horm Behav 2016; 83:83-92. [PMID: 27222435 DOI: 10.1016/j.yhbeh.2016.05.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 05/16/2016] [Accepted: 05/19/2016] [Indexed: 02/01/2023]
Abstract
Alzheimer's disease (AD) is an age-related mental disorder characterized by progressive loss of memory and multiple cognitive impairments. The overproduction and aggregation of Amyloid β protein (Aβ) in the brain, especially in the hippocampus, are closely involved in the memory loss in the patients with AD. Accumulating evidence indicates that the Aβ-induced imbalance of dehydroepiandrosterone (DHEA) and dehydroepiandrosterone sulfate (DHEAS) in the brain plays an important role in the AD pathogenesis and progression. The level of DHEA is elevated, while DHEAS is dramatically decreased in the AD brain. The present study tried to restore the balance between DHEA and DHEAS by using a non-steroidal sulfatase inhibitor DU-14, which increases endogenous DHEAS through preventing DHEAS converted back into DHEA. We found that: (1) DU-14 effectively attenuated the Aβ1-42-induced cognitive deficits in spatial learning and memory of rats in Morris water maze test; (2) DU-14 prevented Aβ1-42-induced decrease in the cholinergic theta rhythm of hippocampal local field potential (LFP) in the CA1 region; (3) DU-14 protected hippocampal synaptic plasticity against Aβ1-42-induced suppression of long term potentiation (LTP). These results provide evidence for the neuroprotective action of DU-14 against neurotoxic Aβ, suggesting that up-regulation of endogenous DHEAS by DU-14 could be beneficial to the alleviation of Aβ-induced impairments in spatial memory and synaptic plasticity.
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Affiliation(s)
- Xing-Hua Yue
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan 030001, PR China; Department of Clinical Laboratory, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300100, PR China
| | - Jia-Qing Tong
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan 030001, PR China
| | - Zhao-Jun Wang
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan 030001, PR China
| | - Jun Zhang
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan 030001, PR China
| | - Xu Liu
- Department of Clinical Laboratory, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300100, PR China
| | - Xiao-Jie Liu
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Hong-Yan Cai
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan 030001, PR China
| | - Jin-Shun Qi
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan 030001, PR China.
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Cai HY, Li L, Guo T, Wang YU, Ma TK, Xiao JM, Zhao L, Fang Y, Yang P, Zhao HU. Cardiac shockwave therapy improves myocardial function in patients with refractory coronary artery disease by promoting VEGF and IL-8 secretion to mediate the proliferation of endothelial progenitor cells. Exp Ther Med 2015; 10:2410-2416. [PMID: 26668649 DOI: 10.3892/etm.2015.2820] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [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: 09/26/2014] [Accepted: 08/26/2015] [Indexed: 11/06/2022] Open
Abstract
Cardiac shockwave therapy (CSWT) is a potential and effective remedy to promote revascularization in the ischemic myocardium of patients with refractory coronary heart disease (CHD). The technique is both safe and non-invasive; however, the underlying molecular mechanism remains unclear. The aim of this study was to evaluate the efficacy of CSWT in treating CHD patients and investigate a potential mechanism. A total of 26 patients with CHD were enrolled in the study, and CSWT was performed over a 3-month period. The efficacy of CSWT was assessed using several clinical parameters. Peripheral blood (PB) was collected prior to and following treatment. The number of circulating endothelial progenitor cells (EPCs) in the PB was counted using a flow cytometer, and the levels of vascular endothelial growth factor (VEGF), interleukin-8 (IL-8), stromal cell-derived factor 1 and matrix metalloproteinase 9 in the PB were analyzed. Mononuclear cells were isolated from the PB and cultured in vitro. The EPCs and EPC-colony forming units (EPC-CFUs) in the PB mononuclear cell culture were counted using an inverted phase contrast microscope. Following CSWT, the tested clinical parameters were significantly improved. The levels of circulating EPCs, VEGF and IL-8 in the PB were significantly increased, as were the EPCs and EPC-CFUs from the PB mononuclear cell culture. We suggest that EPC proliferation, mediated by VEGF and IL-8 secretion, may be among the potential mechanisms associated with CSWT.
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Affiliation(s)
- Hong-Yan Cai
- Department of Cardiology, First Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Lin Li
- Department of Cardiology, First Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Tao Guo
- Department of Cardiology, First Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Y U Wang
- Department of Cardiology, First Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Tie-Kun Ma
- Department of Nuclear Medicine, First Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Jian-Ming Xiao
- Department of Cardiology, First Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Ling Zhao
- Department of Cardiology, First Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Yin Fang
- Department of Medical Statistics, Second Hospital of Kunming Medical University, Kunming, Yunnan 650101, P.R. China
| | - Ping Yang
- Department of Cardiology, First Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - H U Zhao
- Department of Cardiology, First Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
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Zhou ZH, Zhang Q, Liu Y, Wang HZ, Cai HY, Zhang F, Tian MZ, Zhang L, Zhang L. Effect of Crude Oil Fractions on Interfacial Tensions of Novel Sulfobetaine Solutions. J DISPER SCI TECHNOL 2015. [DOI: 10.1080/01932691.2015.1088452] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Ma JS, Chang WH, Liu GH, Zhang S, Zheng AJ, Li Y, Xie Q, Liu ZY, Cai HY. Effects of flavones of sea buckthorn fruits on growth performance, carcass quality, fat deposition and lipometabolism for broilers. Poult Sci 2015; 94:2641-9. [PMID: 26362975 DOI: 10.3382/ps/pev250] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/13/2015] [Indexed: 12/28/2022] Open
Abstract
The objective of this study was to evaluate the effects of different levels of flavones of sea buckthorn fruits (FSBF) on growth performance, carcass quality, fat deposition, and lipometabolism for broilers. 240 one-day-old Arbor Acres male broilers were randomly allotted to 4 dietary treatments (0, 0.05%, 0.10%, and 0.15% FSBF) with 6 replicates of 10 birds. Broilers were reared for 42 d. Results showed FSBF quadratically improved average daily feed intake (ADFI), average daily gain (ADG), and final body weight (BW) (P = 0.002, P = 0.019 and P = 0.018, respectively). The abdominal fat percentage in 0.05%, 0.10%, and 0.15% FSBF supplementation groups was decreased by 21.08%, 19.12%, and 19.61% with respect to the control group, respectively (P < 0.05). The intramuscular fat (IMF) content in the breast muscle of the broilers was increased by 7.21%, 23.42% and 6.30% in 0.05%, 0.10% and 0.15% FSBF groups, and that in the thigh meat was raised by 4.43%, 24.63% and 12.32%, compared with the control group, respectively (P < 0.05). FSBF had a quadratic effect on the abdominal fat percentage and IMF in the breast muscle (P < 0.05). Dietary FSBF also modified fatty acids of muscular tissues, resulting in a higher ratio of unsaturated to saturated fatty acids (P < 0.05). Supplementing FSBF in the diet greatly decreased the levels of triglyceride, cholesterol, and low-density lipoprotein cholesterol (P < 0.05). Moreover, the quadratic responses were also observed in the levels of insulin and adiponectin in serum (P = 0.020 and P = 0.037, respectively). Abdominal fat percentage was correlated negatively with insulin and positively with adiponectin (P < 0.05). IMF content in the breast and thigh muscles were correlated positively with insulin, and negatively with adiponectin (P < 0.05). A positive correlation existed between breast muscle, IMF, and leptin (P < 0.05). In conclusion, adding FSBF into the diets affected growth performance and fat deposition of broilers by regulating lipometabolism. Fat deposition and distribution of broilers were closely associated with concentrations of insulin and adiponectin. The optimal level of FSBF supplemented in diet was 0.05 to 0.10% in this study.
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Affiliation(s)
- J S Ma
- The key laboratory of Feed Biotechnology of Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - W H Chang
- The key laboratory of Feed Biotechnology of Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - G H Liu
- The key laboratory of Feed Biotechnology of Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - S Zhang
- The key laboratory of Feed Biotechnology of Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - A J Zheng
- The key laboratory of Feed Biotechnology of Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Y Li
- The key laboratory of Feed Biotechnology of Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Q Xie
- The key laboratory of Feed Biotechnology of Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Z Y Liu
- The key laboratory of Feed Biotechnology of Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - H Y Cai
- The key laboratory of Feed Biotechnology of Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
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Qiao F, Gao XP, Yuan L, Cai HY, Qi JS. Apolipoprotein E4 impairs in vivo hippocampal long-term synaptic plasticity by reducing the phosphorylation of CaMKIIα and CREB. J Alzheimers Dis 2015; 41:1165-76. [PMID: 24787920 DOI: 10.3233/jad-140375] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Inheritance of the apolipoprotein E genotype ε4 (APOE4) is a powerful risk factor for most cases of late-onset Alzheimer's disease (AD). However, the effects of ApoE4 on the long-term synaptic plasticity and its underlying mechanism have not clearly investigated. In the present study, we examined the effects of ApoE4 on the hippocampal late-phase long-term potentiation (L-LTP) and investigated its probable molecular mechanisms by using in vivo field potential recording, immunohistochemistry, and western blotting. The results showed that: (1) intra-hippocampal injection of 0.2 μg ApoE4, but not ApoE2, before high frequency stimulations (HFSs) attenuated the induction of hippocampal L-LTP in the CA1 region, while injection of the same concentration of ApoE4 after HFSs, even at a higher concentration (2 μg), did not affect the long term synaptic plasticity; (2) ApoE4 injection did not affect the paired pulse facilitation in the hippocampal CA1 region; (3) ApoE4 injection before, not after, HFSs significantly decreased the levels of phosphorylated Ca2+/calmodulin-dependent protein kinase IIα (p-CaMKIIα) and phosphorylated cAMP response element-binding protein (p-CREB) in the hippocampus. These results demonstrated for the first time that ApoE4 could impair hippocampal L-LTP by reducing p-CaMKIIα and p-CREB, suggesting that the ApoE4-induced suppression of hippocampal long-term synaptic plasticity may contribute to the cognitive impairments in genetic AD; and both CaMKIIα and CREB are important intracellular targets of the neurotoxic ApoE4.
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Affiliation(s)
- Feng Qiao
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, P.R. China
| | - Xiu-Ping Gao
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Li Yuan
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, P.R. China
| | - Hong-Yan Cai
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, P.R. China
| | - Jin-Shun Qi
- Department of Physiology, Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, P.R. China
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Abstract
To explore regulation of inosinic acid content in chicken meat as a result of feed additives, 576 one-day-old male Arbor Acres broilers were randomly allotted into 8 dietary treatments including control, purine nucleotide (P), betaine (B), soybean isoflavone (S), purine nucleotide + betaine (PB), purine nucleotide + soybean isoflavone (PS), betaine +soybean isoflavone (BS), and purine nucleotide + betaine + soybean isoflavone (PBS) by a 2 × 2 × 2 factorial arrangement. At d 42 of age, broilers were slaughtered, and growth performance, carcass characteristics, inosinic acid content, and activities of enzyme closely related to inosinic acid metabolism of broilers were measured. The results revealed that these feed additives did not affect ADG and ADFI of the broilers (P > 0.05). However, supplementing purine nucleotides lowered feed/gain of broilers in PS and PBS groups (P < 0.05). There was a significant interaction on feed/gain of broilers between purine nucleotides and soybean isoflavone (P < 0.05). The abdominal fat percentages in groups B, S, BS, and PBS were lower than the control group, respectively (P < 0.05). The thigh muscle percentages of groups P and B were higher than that of group PB (P < 0.05). There were certain interactions on the percentage of thigh muscle (P = 0.05) and abdominal fat (P < 0.05) between P, B, and S groups. Compared with the control group, inosinic acid content in broiler breast meat was improved by using feed additives (P < 0.05). Supplementing purine nucleotides, betaine, soybean isoflavone, and their combinations increased alkaline phosphatase activity in breast meat of broilers (P < 0.05). Purine nucleotides improved the activity of adenosine deaminase, but decreased the activity of 5'-nucleotidase. Soybean isoflavone lowered the activity of alkaline phosphatase. There were no significant interactions on activities of creatine kinase, adenosine deaminase, alkaline phosphatase, and 5'-nucleotidase between these additives (P > 0.05). The umami rating of broiler breast meat increased in conjunction with supplementing these additives. In conclusion, supplementing standard feed with the additives investigated in this study could improve inosinic acid content in chicken meat by increasing synthase activity or inhibiting degradation enzyme activity without inferior growth performance and carcass quality.
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Affiliation(s)
- X F Wang
- The Key Laboratory of Feed Biotechnology of Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing 100081, China
| | - G H Liu
- The Key Laboratory of Feed Biotechnology of Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing 100081, China
| | - H Y Cai
- The Key Laboratory of Feed Biotechnology of Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing 100081, China
| | - W H Chang
- The Key Laboratory of Feed Biotechnology of Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing 100081, China
| | - J S Ma
- The Key Laboratory of Feed Biotechnology of Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing 100081, China
| | - A J Zheng
- The Key Laboratory of Feed Biotechnology of Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing 100081, China
| | - S Zhang
- The Key Laboratory of Feed Biotechnology of Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing 100081, China
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Zhang Q, Zhou ZH, Dong LF, Wang HZ, Cai HY, Zhang F, Zhang L, Zhang L, Zhao S. Dilational rheological properties of sulphobetaines at the water–decane interface: Effect of hydrophobic group. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.04.031] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Chen G, Li SY, Cai HY, Zuo FY. Enhanced expression and significance of glycosylphosphatidylinositol anchor attachment protein 1 in colorectal cancer. Genet Mol Res 2014; 13:499-507. [PMID: 24535878 DOI: 10.4238/2014.january.21.19] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [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
The aim of this study was to investigate the expression of glycosylphosphatidylinositol anchor attachment protein 1 (GPAA1) and its significance in patients with colorectal cancer. Fifty-two patients with primary colorectal cancer were included in this study. GPAA1 expression was detected by immunohistochemistry, reverse transcription-polymerase chain reaction, and Western blot analysis. A cell invasion assay was performed by the transwell method. The interacting proteins of GPAA1 were detected by co-immunoprecipitation and matrix assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF/TOF-MS). The expression of GPAA1 mRNA and protein in primary colorectal tumor tissues and liver metastasis tissues was significantly higher than that in normal mucosa tissues (P < 0.01). The number of highly expressing GPAA1 cells penetrating the Matrigel membrane was significantly higher than that of mildly expressing GPAA1 cells (P < 0.05). The results of co-immunoprecipitation and MALDI-TOF/TOF-MS confirmed the identity of the protein. GPAA1 is highly expressed in patients with colorectal cancer, which indicates that it might play an important role in the proliferation, invasion, and metastasis of colorectal cancer.
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Affiliation(s)
- G Chen
- Department of Postgraduate, Third Military Medical University, Shapingba District, Chongqing, China
| | - S Y Li
- Department of General Surgery, General Hospital of PLA Beijing Military Command, East District, Beijing, China
| | - H Y Cai
- Department of General Surgery, General Hospital of PLA Beijing Military Command, East District, Beijing, China
| | - F Y Zuo
- Department of General Surgery, General Hospital of PLA Beijing Military Command, East District, Beijing, China
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Zhang LL, Chen X, Wei HT, Li H, Sun JH, Cai HY, Chen JL, Cui DF. An electrochemical surface plasmon resonance imaging system targeting cell analysis. Rev Sci Instrum 2013; 84:085005. [PMID: 24007100 DOI: 10.1063/1.4819027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
This paper presents an electrochemical-surface plasmon resonance imaging (EC-SPRI) system, enabling the characterization of optical and electrical properties of cells, simultaneously. The developed surface plasmon resonance (SPR) imaging system was capable of imaging micro cavities with a dimension of 10 μm × 10 μm and differentiated glycerol solutions with a group of refractive indices (RIs). Furthermore, the EC-SPRI system was used to image A549 cells, suggesting corresponding RI and morphology changes during the cell death process. In the end, electrochemical and SPR methods were used in combination, recording oxidation peaks of A549 cells in the cyclic voltage curves and SPR response unit increase, simultaneously.
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Affiliation(s)
- L L Zhang
- State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing, China
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Cai HY, Cui DF, Li YT, Chen X, Zhang LL, Sun JH. Apparatus for measuring the Seebeck coefficients of highly resistive organic semiconducting materials. Rev Sci Instrum 2013; 84:044703. [PMID: 23635216 DOI: 10.1063/1.4799968] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A Seebeck coefficient measurement apparatus for high resistance organic semiconductor materials has been designed and built. It can measure materials with resistance over 7 × 10(12) Ω. This is the highest material resistance value ever reported for Seebeck coefficient measurement. A cyclic temperature gradient generation technique and a corresponding algorithm are proposed to eliminate the negative effects of the long term drift of Seebeck voltage. Sources of errors in these measurements are discussed.
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Affiliation(s)
- H Y Cai
- State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, China.
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Zhang LL, Chen X, Sun JH, Cai HY, Li H, Chao YP, Cui DF. A poly(dimethylsiloxane) based prism for surface plasmon resonance imaging system and its application for gas detection. Rev Sci Instrum 2013; 84:035001. [PMID: 23556840 DOI: 10.1063/1.4792602] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
This paper presents a surface plasmon resonance (SPR) imaging system based on a low-cost, convenient poly(dimethylsiloxane) (PDMS) prism featured with a close contact with the gold film. Compared to conventional glass prism, both numerical simulations and experimental studies indicated a deeper but wider absorption peak with a higher coupling angle for the PDMS based prism. System repeatability was quantified by the cycled detection of helium and air, with the effect of the flow rate investigated. Furthermore, five types of gases (nitrogen, air, oxygen, hydrogen, and helium) were detected and differentiated by the SPR system, with a calculated sensitivity of 5 × 10(-6) RIU.
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Affiliation(s)
- L L Zhang
- State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing, China
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Sun JH, Cui DF, Chen X, Zhang LL, Cai HY, Li H. A micro gas chromatography column with a micro thermal conductivity detector for volatile organic compound analysis. Rev Sci Instrum 2013; 84:025001. [PMID: 23464240 DOI: 10.1063/1.4789526] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
In this paper, a micro gas chromatography (μGC) system contained a μGC column and a micro thermal conductivity detector (μTCD) was proposed. In order to reduce the volume of the system, some micro heaters were integrated on the surface and backside of the GC column, which could provide a robust temperature programming capability and rapidly increase the temperature of the μGC column. In addition, a silicon-glass μTCD with four-thermistor thermal conductivity cells that can offer significant advantages over previously reported designs including low dead volume, good thermal isolation, and elimination of the thermal noise was proposed in this paper. Experimental results have indicated that the μGC system with a detection limit of several ppm concentration levels separated and detected the benzene, toluene, and styrene in less than 3 min, and the μGC system also exhibited a good linear response in the test range.
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Affiliation(s)
- J H Sun
- State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing, China.
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Wang XH, Yang W, Hölscher C, Wang ZJ, Cai HY, Li QS, Qi JS. Val8-GLP-1 remodels synaptic activity and intracellular calcium homeostasis impaired by amyloid β peptide in rats. J Neurosci Res 2013; 91:568-77. [DOI: 10.1002/jnr.23181] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2012] [Revised: 10/12/2012] [Accepted: 10/30/2012] [Indexed: 11/11/2022]
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Wang Y, Guo T, Ma TK, Cai HY, Tao SM, Peng YZ, Yang P, Chen MQ, Gu Y. A modified regimen of extracorporeal cardiac shock wave therapy for treatment of coronary artery disease. Cardiovasc Ultrasound 2012; 10:35. [PMID: 22898340 PMCID: PMC3537548 DOI: 10.1186/1476-7120-10-35] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2012] [Accepted: 08/09/2012] [Indexed: 11/16/2022] Open
Abstract
Background Cardiac shock wave therapy (CSWT) improves cardiac function in patients with severe coronary artery disease (CAD). We aimed to evaluate the clinical outcomes of a new CSWT treatment regimen. Methods The 55 patients with severe CAD were randomly divided into 3 treatment groups. The control group (n = 14) received only medical therapy. In group A ( n = 20), CSWT was performed 3 times within 3 months. In group B ( n = 21), patients underwent 3 CSWT sessions/week, and 9 treatment sessions were completed within 1 month. Primary outcome measurement was 6-minute walk test (6MWT). Other measurements were also evaluated. Results The 6MWT, CCS grading of angina, dosage of nitroglycerin, NYHA classification, and SAQ scores were improved in group A and B compared to control group. Conclusions A CSWT protocol with 1 month treatment duration showed similar therapeutic efficacy compared to a protocol of 3 months duration. Clinical trial registry We have registered on ClinicalTrials.gov, the protocol ID is CSWT IN CHINA.
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Affiliation(s)
- Yu Wang
- Department of Cardiology, 1st Hospital of Kunming Medical University, Kunming, Yunnan, PRC
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Yang P, Guo T, Wang W, Peng YZ, Wang Y, Zhou P, Luo ZL, Cai HY, Zhao L, Yang HW. Randomized and double-blind controlled clinical trial of extracorporeal cardiac shock wave therapy for coronary heart disease. Heart Vessels 2012; 28:284-91. [DOI: 10.1007/s00380-012-0244-7] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2011] [Accepted: 02/24/2012] [Indexed: 10/28/2022]
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44
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Wang Y, Guo T, Cai HY, Ma TK, Tao SM, Sun S, Chen MQ, Gu Y, Pang JH, Xiao JM, Yang XY, Yang C. Cardiac shock wave therapy reduces angina and improves myocardial function in patients with refractory coronary artery disease. Clin Cardiol 2011; 33:693-9. [PMID: 21089114 DOI: 10.1002/clc.20811] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Safe and effective therapeutic management of refractory coronary artery disease (CAD) in heart patients is critical to enhance cardiovascular function and improve quality of life. Current therapies for refractory CAD are inadequate in ameliorating angina and promoting revascularization of ischemic myocardium. HYPOTHESIS Cardiac shock wave therapy (CSWT) is a safe and effective noninvasive intervention in the management of patients with refractory CAD. METHODS The study enrolled 9 male patients age 50 to 70 years (5.11 ± 5.46 years) with a diagnosis of CAD and stent implantation (3.00 ± 2.24 stents). CSWT was carried out for 3 months at 3 intervals during the first week of each month (first, third, and fifth day), for a total of 9 therapies per patient. Dobutamine stress echocardiography and radionuclide angiography identified the myocardial ischemic segments. The effects of CSWT on myocardial perfusion and systolic function were examined. Other outcome measures included myocardial injury enzyme markers, angina scale, nitroglycerin dosage, and cardiopulmonary fitness assessments. RESULTS Improved myocardial blood flow and regional systolic function (stress peak systolic strain rate - 1.10 to - 1.60 s(-1), P = 0.002) were detected in patients following CSWT. Reductions in creatine kinase (87.89 ± 36.69 to 86.22 ± 35.96 IU/L, P = 0.046), creatine kinase MB (10.89 ± 5.73 to 10.11 ± 5.93 IU/L, P = 0.008), aspartate transaminase (interquartile range [IQR], 28.00 to 27.00 IU/L, P = 0.034) were also found. Angina (Canadian Cardiovascular Society scale IQR 3.0 to 2.0, P = 0.035) and nitroglycerin dose reduction (IQR 3.0 to 1.0 times/wk, P = 0.038) were reported. CONCLUSIONS This study is a preliminary assessment of CSWT in patients with refractory CAD. We report that CSWT is a noninvasive, effective, and safe intervention in the treatment of refractory CAD.
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Affiliation(s)
- Yu Wang
- Department of Cardiology, 1st Hospital of Kumming Medical College, Kumming, Yunnan, China
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Wang Y, Guo T, Cai HY, Ma TK, Tao SM, Chen MQ, Gu Y, Pan JH, Xiao JM, Zhao L, Yang XY, Yang C. [Extracorporeal cardiac shock wave therapy for treatment of coronary artery disease]. Zhonghua Xin Xue Guan Bing Za Zhi 2010; 38:711-715. [PMID: 21055138] [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: 05/30/2023]
Abstract
OBJECTIVE To evaluate the feasibility and efficiency of extracorporeal cardiac shock wave therapy (CSWT) for treatment of coronary artery disease. METHODS Twenty-five patients with 1 - 16 years history of chronic angina pectoris underwent the CSWT. Before and after the treatment, low-dose Dobutamine stress echocardiography and (99)Tc(m)-MIBI myocardial perfusion SPECT were applied to locate the ischemic segments, detect the viable myocardium and evaluate the effect of CSWT. Under the guidance of echocardiography, CSWT was applied in R-wave-triggered manner with low energy (0.09 mJ/mm(2)) at 200 shoots/spot for 9 spots (-1-0-+1 combination). Patients were divided group A and group B. Sixteen patients in group A were applied 9 sessions on 29 segments within 3 month and nine patients in group B were applied 9 sessions on 13 segments within 1 month. Ten chronic angina pectoris patients receiving standard medication served as controls. RESULTS All patients completed the 9 sessions without procedural complications or adverse effects. CSWT significantly improved symptoms as evaluated by NYHA, Canadian Cardiovascular Society (CCS) class sores, Seattle angina questionnaire (SAQ), 6-min walk and the use of nitroglycerin (P < 0.05). CSWT also improved myocardial perfusion and regional myocardium function as evaluated by rest SPECT and stress peak systolic strain rate (PSSR) (P < 0.01). Myocardial perfusion improvement was more significant in group A compared with group B (1.21 ± 0.86 vs. 0.83 ± 0.80, P < 0.01). All parameters remained unchanged in control group during follow up. CONCLUSION These preliminary results indicate that CSWT is safe and effective on ameliorating anginal symptoms for chronic angina pectoris patients.
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Affiliation(s)
- Yu Wang
- Department of Cardiology, First Hospital of Kunming Medical College, Kunming 650032, China
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Wang L, Zhang RM, Liu GY, Wei BL, Wang Y, Cai HY, Li FS, Xu YL, Zheng SP, Wang G. Chinese herbs in treatment of influenza: a randomized, double-blind, placebo-controlled trial. Respir Med 2010; 104:1362-9. [PMID: 20573492 PMCID: PMC7127189 DOI: 10.1016/j.rmed.2010.05.015] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2009] [Revised: 05/23/2010] [Accepted: 05/24/2010] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To investigate the efficacy and safety of Antiwei, a traditional Chinese prescription, in the treatment of influenza. METHODS In a multi-center, randomized, double-blind, placebo-controlled trial, we recruited 480 adults aged 18 to 65 years within 36 h of onset of influenza-like symptoms. There were 225 patients with confirmed influenza. Eligible patients were randomly assigned 6 g of Antiwei (n = 360) or placebo (n = 120) twice daily for three days. All patients recorded their temperature and symptoms on diary cards during treatment. Analyses were performed in both the influenza-like population and the influenza-confirmed population. RESULTS Antiwei increased patients' recovery by 17% (P < 0.001), and reduced the severity of illness measured by the median symptom score by 50% (P < 0.001) in both the influenza-like and the influenza-confirmed populations, compared to placebo. The influenza-confirmed patients reported reductions in the severity of fever (P = 0.002), cough (P = 0.023) and expectoration (P = 0.004) after one-day of treatment with Antiwei, compared to placebo. The adverse event profiles were similar for Antiwei and placebo. CONCLUSION Antiwei was effective and well tolerated in treatment of natural influenza infection in adults. Antiwei represents a clinically valuable intervention in the management of influenza.
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Affiliation(s)
- Lei Wang
- Department of Integrated Traditional Chinese and Western Medicine, West China Hospital, Sichuan University, Chengdu, People's Republic of China
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Abstract
An antibody microarray assay was developed for Salmonella serotyping based on the Kauffmann-White scheme. A model (8 by 15) array was constructed using 35 antibodies for identification of 20 common Salmonella serovars and evaluated using 117 target and 73 nontarget Salmonella strains. The assay allowed complete serovar identification of 86 target strains and partial identification of 30 target strains and allowed exclusion of the 73 nontarget strains from the target serovars.
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Affiliation(s)
- H Y Cai
- Laboratory Services Division, University of Guelph, P.O. Box 3650, 95 Stone Road West, Guelph, Ontario, Canada N1H 8J7
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Cai HY. [Establishment and application of transplantable models of human esophageal carcinoma in nude mice]. Zhonghua Zhong Liu Za Zhi 1993; 15:248-51. [PMID: 7513633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
We have successfully established two human esophageal carcinoma models in nude mice by transplantation of surgical specimen from patients with esophageal cancer. Histopathological study revealed that one was squamous cell carcinoma (HEC2) and the other adeno-squamous cell carcinoma (HEC6). Light and electron microscopy showed that their morphology was similar to that of the original tumors. The transplanted tumors have been maintained for more than four years through more than 50 passages. The tumors grew steadily and fast. The rate of successful inoculation was 100%. Bleomycin A5 and 5-Fluorouracil (5-Fu) were used for treatment of HEC6. Results showed that Bleomycin A5 exhibited a remarkable growth inhibition on the HEC6. The inhibition rates of two separate experiments were 56.5% and 87.8% respectively (compared with the control group, P < 0.01). The inhibition rates of 5-Fu were 6.5% and 36.6% respectively. Compared with the control group, there was no significant difference statistically HEC2 was treated by X-ray or X-ray combined with hematoporphyrin derivative (HPD), the tumor growth inhibition was 57.7% and 85.4% respectively.
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Affiliation(s)
- H Y Cai
- Cancer Center, Sun Yet-sen University of Medical Sciences, Guangzhou, Guangdong
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Cai HY. [Transformation of rat esophageal precancerous epithelial cells and its biologic characteristics--establishment of RE25-3 esophageal carcinoma cell line]. Zhonghua Zhong Liu Za Zhi 1988; 10:256-9. [PMID: 3248480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A neoplastic transformation cell line (RE25-3) of the rat esophageal precancerous epithelium has been established by in vivo-in vitro method in our laboratory. Ten criteria were used to study the biological characteristics of the neoplastic transformation during various stages: 1. Dysplastic lesion of the esophageal epithelium was induced in wistar rat by oral administration of NSEE. The dysplastic epithelium was then removed and cultured. After several generations of subculture without carcinogen, the dysplastic epithelium showed neoplastic transformation in vitro. 2. The maximum mitotic index of the transformed cell reached 2.0% and two peaks were observed at hour 41 and 96, respectively, while the mitotic index of the normal esophageal cell was 0.6%. 3. DNA measurement was performed by MSP. The results showed disappearance of the diploid cell from the fifth subculture. Tetraploid, heteroploid and aneuploid cells were observed from the third subculture. The aneuploid cells amounted to 86.24%. 4. The number of chromosome increased as the time of culture as well as the number of subculture generation increased. Chromosome aberration was observed. 5. As the number of subculture generation increased, the damage and break of the chromosome increased. Micronuclei rate increased. 6. By incorporation of H3-TdR, DNA synthesis rate increased as the malignancy increased. 7. Growth of the RE25-3 cell was dependent on EGF in the early stage. But after 15 subculture, as neoplastic transformation developed, this dependency disappeared. 8. After 14 generations of subculture, the cell can be cultured in soft ager. 9. Keratin was proved positive within the cell by ABC immuno-histochemistry assay.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- H Y Cai
- Cancer Institute, Zhongshan University of Medical Sciences, Guangzhou
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Cai HY. [Induction of precancerous changes and carcinoma of the nasopharynx in rats and the inhibitory effect of RI on carcinogenesis]. Zhonghua Bing Li Xue Za Zhi 1988; 17:98-101. [PMID: 3208375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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