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Paradoxical changes in mood-related behaviors on continuous social isolation after weaning. Exp Brain Res 2021; 239:2537-2550. [PMID: 34143240 PMCID: PMC8354913 DOI: 10.1007/s00221-021-06149-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 06/04/2021] [Indexed: 12/18/2022]
Abstract
Continuous social isolation (SI) from an early developmental stage may have different effects in youth and adulthood. Moreover, SI is reported to impair neuronal plasticity. In this study, we used post-weaning rats to compare the impact of continuous SI on depressive-like, anxiety-related, and fear-related behaviors and neuronal plasticity in puberty and adulthood. Furthermore, we assessed the effect of lithium on behavioral changes and neuronal plasticity. Continuous SI after weaning induced depressive-like behaviors in puberty; however, in adulthood, depressive-like and anxiety-related behaviors did not increase, but—paradoxically—decreased in comparison with the controls. The decreased expression of neuronal plasticity-related proteins in the hippocampus in puberty was more prominent in the prefrontal cortex and hippocampus in adulthood. In contrast, SI after weaning tended to decrease fear-related behaviors in puberty, a decrease which was more prominent in adulthood with increased neuronal plasticity-related protein expression in the amygdala. Lithium administration over the last 14 days of the SI-induced period removed the behavioral and expression changes of neuronal plasticity-related proteins observed in puberty and adulthood. Our findings suggest that the extension of the duration of SI from an early developmental stage does not simply worsen depressive-like behaviors; rather, it induces a behavior linked to neuronal plasticity damage. Lithium may improve behavioral changes in puberty and adulthood by reversing damage to neuronal plasticity. The mechanisms underlying the depressive-like and anxiety-related behaviors may differ from those underlying fear-related behaviors.
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Cross-sectional and longitudinal small animal PET shows pre and post-synaptic striatal dopaminergic deficits in an animal model of HIV. Nucl Med Biol 2017; 55:27-33. [PMID: 29031113 DOI: 10.1016/j.nucmedbio.2017.08.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Revised: 07/01/2017] [Accepted: 08/23/2017] [Indexed: 11/20/2022]
Abstract
INTRODUCTION In vivo imaging biomarkers of various HIV neuropathologies, including dopaminergic dysfunction, are still lacking. Towards developing dopaminergic biomarkers of brain involvement in HIV, we assessed the pre and postsynaptic components of the dopaminergic system in the HIV-1 transgenic rat (Tg), a well-characterized model of treated HIV+ patients, using small-animal PET imaging. METHODS Fifteen to 18 month-old Tg and wild type (WT) rats were imaged with both [18F]-FP-CMT, a dopamine transporter (DAT) ligand (n=16), and [18F]-Fallypride, a D2/D3 dopamine receptor (D2/D3DR) ligand (n=16). Five to 8 month-old Tg and WT rats (n=18) were also imaged with [18F]-FP-CMT. A subset of animals was imaged longitudinally at 7 and 17 months of age. Multiplex immunohistochemistry staining for DAT, tyrosine hydroxylase, D2DR, D3DR, GFAP, Iba1 and NeuN was performed on a subgroup of the scanned animals. RESULTS [18F]-FP-CMT and [18F]-Fallypride binding potential (BPND) values were significantly lower in 15-18 month-old Tg compared to age-matched WT rats (p<0.0001 and 0.001, respectively). [18F]-FP-CMT BPND values in 5-8 month-old rats, however, were not significantly different. Longitudinal age-related decrease in [18F]-FP-CMT BPND was exacerbated in the Tg rat. Immunohistochemistry showed decreased staining of dopaminergic markers in Tg rats. Rats with higher serum gp120 had lower mean BPND values for both ligands. CONCLUSIONS We found presynaptic and postsynaptic dopaminergic dysfunction/loss in older Tg compared to WT rats. We believe this to be related to neurotoxicity of viral proteins present in the Tg rats' serum and brain. ADVANCES IN KNOWLEDGE Our findings confirm prior reports of neurobehavioral abnormalities suggestive of dopaminergic dysfunction in this model. They also suggest similarities between the Tg rat and HIV+ patients as far as dopaminergic dysfunction. IMPLICATIONS FOR PATIENT CARE The Tg rat, along with the above-described quantitative PET imaging biomarkers, can have a role in the evaluation of HIV neuroprotective therapies prior to human translation.
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Zhang H, Wang J, Li L, Chai N, Chen Y, Wu F, Zhang W, Wang L, Shi S, Zhang L, Bian S, Xu C, Tian Y, Zhao Y. Spermine and spermidine reversed age-related cardiac deterioration in rats. Oncotarget 2017; 8:64793-64808. [PMID: 29029392 PMCID: PMC5630292 DOI: 10.18632/oncotarget.18334] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Accepted: 05/21/2017] [Indexed: 01/08/2023] Open
Abstract
Aging is the most important risk factor for cardiovascular disease (CVD). Slowing or reversing the physiological impact of heart aging may reduce morbidity and mortality associated with age-related CVD. The polyamines, spermine (SP) and spermidine (SPD) are essential for cell growth, differentiation and apoptosis, and levels of both decline with age. To explore the effects of these polyamines on heart aging, we administered SP or SPD intraperitoneally to 22- to 24-month-old rats for 6 weeks. Both treatments reversed and inhibited age-related myocardial morphology alterations, myocardial fibrosis, and cell apoptosis. Using combined proteomics and metabolomics analyses, we identified proteins and metabolites up- or downregulated by SP and SPD in aging rat hearts. SP upregulated 51 proteins and 28 metabolites while downregulating 80 proteins and 29 metabolites. SPD upregulated 44 proteins and 24 metabolites and downregulated 84 proteins and 176 metabolites. These molecules were mainly associated with immune responses, blood coagulation, lipid metabolism, and glutathione metabolism pathways. Our study provides novel molecular information on the cardioprotective effects of polyamines in the aging heart, and supports the notion that SP and SPD are potential clinical therapeutics targeting heart disease.
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Affiliation(s)
- Hao Zhang
- Department of Pathophysiology, The Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Junying Wang
- Department of Pathophysiology, The Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Lingxu Li
- Department of Pathophysiology, The Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Nannan Chai
- Department of Pathophysiology, The Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China.,College of Nursing, Medical School of Chifeng University, Chifeng, China
| | - Yuhan Chen
- Department of Pathophysiology, The Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Feixiang Wu
- Department of Pathophysiology, The Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Weihua Zhang
- Department of Pathophysiology, The Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China.,Key Laboratory of Cardiovascular Medicine Research, Harbin Medical University, Ministry of Education, Harbin, China
| | - Lina Wang
- Department of Pathophysiology, The Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Sa Shi
- Department of Pathophysiology, The Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Li Zhang
- Department of Pathophysiology, The Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China
| | - Shuling Bian
- Experiment Center of Function, Harbin Medical University, Harbin, China
| | - Changqing Xu
- Department of Pathophysiology, The Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China.,Key Laboratory of Cardiovascular Medicine Research, Harbin Medical University, Ministry of Education, Harbin, China
| | - Ye Tian
- Department of Pathophysiology, The Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China.,Key Laboratory of Cardiovascular Medicine Research, Harbin Medical University, Ministry of Education, Harbin, China
| | - Yajun Zhao
- Department of Pathophysiology, The Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, China.,Key Laboratory of Cardiovascular Medicine Research, Harbin Medical University, Ministry of Education, Harbin, China
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Ou C, Wang Q, Zhang Y, Kong W, Zhang S, Yu Y, Ma J, Liu X, Kong X. Transcription profiles of the responses of chicken bursae of Fabricius to IBDV in different timing phases. Virol J 2017; 14:93. [PMID: 28486945 PMCID: PMC5424287 DOI: 10.1186/s12985-017-0757-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 04/26/2017] [Indexed: 02/06/2023] Open
Abstract
Background Infectious bursal disease virus (IBDV) infection causes immunosuppression in chickens and increases their susceptibility to secondary infections. To explore the interaction between host and IBDV, RNA-Seq was applied to analyse the transcriptional profiles of the responses of chickens’ bursas of Fabricius in the early stage of IBDV infection. Results The results displayed that a total of 15546 genes were identified in the chicken bursa libraries. Among the annotated genes, there were 2006 and 4668 differentially expressed genes in the infection group compared with the mock group on day 1 and day 3 post inoculation (1 and 3 dpi), respectively. Moreover, there were 676 common up-regulated and 83 common down-regulated genes in the bursae taken from the chickens infected with IBDV on both 1 and 3 dpi. Meanwhile, there were also some characteristic differentially expressed genes on 1 and 3 dpi. On day 1 after inoculation with IBDV, host responses mainly displayed immune response processes, while metabolic pathways played an important role on day three post infection. Six genes were confirmed by quantitative reverse transcription-PCR. Conclusions In conclusion, the differential gene expression profile demonstrated with RNA-Seq might offer a better understanding of the molecular interactions between host and IBDV during the early stage of infection. Electronic supplementary material The online version of this article (doi:10.1186/s12985-017-0757-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Changbo Ou
- College of Life Science, Henan Normal University, Xinxiang, 453007, Henan, China.,Postdoctoral Research and Development Base, Henan Institute of Science and Technology, Xinxiang, 453003, Henan, China.,College of Animal Science and veterinary medicine, Henan Institute of Science and Technology, Xinxiang, 453003, Henan, China
| | - Qiuxia Wang
- Postdoctoral Research and Development Base, Henan Institute of Science and Technology, Xinxiang, 453003, Henan, China.,College of Animal Science and veterinary medicine, Henan Institute of Science and Technology, Xinxiang, 453003, Henan, China
| | - Yanhong Zhang
- College of Animal Science and veterinary medicine, Henan Institute of Science and Technology, Xinxiang, 453003, Henan, China
| | - Weili Kong
- Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY, 14642, USA
| | - Shouping Zhang
- College of Animal Science and veterinary medicine, Henan Institute of Science and Technology, Xinxiang, 453003, Henan, China
| | - Yan Yu
- College of Animal Science and veterinary medicine, Henan Institute of Science and Technology, Xinxiang, 453003, Henan, China
| | - Jinyou Ma
- College of Animal Science and veterinary medicine, Henan Institute of Science and Technology, Xinxiang, 453003, Henan, China
| | - Xingyou Liu
- Postdoctoral Research and Development Base, Henan Institute of Science and Technology, Xinxiang, 453003, Henan, China. .,College of Animal Science and veterinary medicine, Henan Institute of Science and Technology, Xinxiang, 453003, Henan, China.
| | - Xianghui Kong
- College of Life Science, Henan Normal University, Xinxiang, 453007, Henan, China.
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