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Kossowska M, Olejniczak S, Karbowiak M, Mosiej W, Zielińska D, Brzezicka A. The Interplay between Gut Microbiota and Cognitive Functioning in the Healthy Aging Population: A Systematic Review. Nutrients 2024; 16:852. [PMID: 38542764 PMCID: PMC10974508 DOI: 10.3390/nu16060852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 03/13/2024] [Accepted: 03/13/2024] [Indexed: 04/05/2024] Open
Abstract
BACKGROUND The gut microbiota in healthy older individuals typically show a decrease in beneficial bacteria like Bifidobacterium and Lactobacillus, alongside an increase in pro-inflammatory microbes such as Enterobacteriaceae and Clostridia. These changes contrast with younger and middle-aged individuals and appear to correlate with cognitive status. Although there is extensive research on gut microbiota and cognitive functions in cognitively impaired elderly individuals, its impact on cognitively healthy elderly populations has not been extensively studied. METHOD A comprehensive literature search was conducted across PubMed, EBSCO, Web of Science, and Scopus databases to identify studies exploring the relationship between gut microbiota composition and cognitive functioning in healthy older adults. During the literature screening process, each record was initially assessed by its title, abstract, and keywords to exclude articles that did not align with the scope of this review. Three authors independently screened and retrieved the records. The inclusion criteria included: (1) publication in peer-reviewed journals; (2) studies involving neurologically, cognitively, and medically healthy populations; (3) participants identified as older adults, defined for this review as individuals aged 45 years and older due to the limited number of records; (4) analysis of gut microbiota; and (5) assessment of cognitive function. Subsequently, full texts were analyzed to determine eligibility. The exclusion criteria encompassed: (1) incorrect publication type; (2) inappropriate sample population; (3) unsuitable study design; (4) absence of one or more inclusion criteria; and (5) studies based on animal research. A risk of bias assessment was performed for each included study using the Joanna Briggs Institute (JBI) checklist, ensuring all selected studies met established quality standards. RESULTS A total of 6 eligible research articles from a possible 1752 published until March 2024 were identified and included. We categorized the included studies into two groups based on their focus: the taxonomic composition of gut microbiota and the alpha diversity, which is the variety of organisms within a sample. Additionally, two methods were identified for assessing cognition: neuropsychological tests and physiological measurements, notably electroencephalography (EEG). The studies show varying results regarding the abundance of specific bacterial taxa and their cognitive associations. Notably, the relationship between certain bacteria and cognition may vary when analyzed at different taxonomic levels, such as phylum versus family. CONCLUSIONS Changes in gut microbiota composition in the elderly, even without a cognitive impairment diagnosis, could potentially serve as early biological markers for Alzheimer's disease or other dementias before mild cognitive impairment appears.
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Affiliation(s)
- Maria Kossowska
- Institute of Psychology, SWPS University, 03-815 Warsaw, Poland; (M.K.); (S.O.)
| | - Sylwia Olejniczak
- Institute of Psychology, SWPS University, 03-815 Warsaw, Poland; (M.K.); (S.O.)
| | - Marcelina Karbowiak
- Institute of Human Nutrition Sciences, Warsaw University of Life Sciences (SGGW), Nowoursynowska 159c, 02-776 Warsaw, Poland; (M.K.); (W.M.); (D.Z.)
| | - Wioletta Mosiej
- Institute of Human Nutrition Sciences, Warsaw University of Life Sciences (SGGW), Nowoursynowska 159c, 02-776 Warsaw, Poland; (M.K.); (W.M.); (D.Z.)
| | - Dorota Zielińska
- Institute of Human Nutrition Sciences, Warsaw University of Life Sciences (SGGW), Nowoursynowska 159c, 02-776 Warsaw, Poland; (M.K.); (W.M.); (D.Z.)
| | - Aneta Brzezicka
- Institute of Psychology, SWPS University, 03-815 Warsaw, Poland; (M.K.); (S.O.)
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Oroszi T, Felszeghy K, Luiten PG, Schoemaker RG, van der Zee EA, Nyakas C. Whole body vibration ameliorates anxiety-like behavior and memory functions in 30 months old senescent male rats. Heliyon 2024; 10:e26608. [PMID: 38404823 PMCID: PMC10884920 DOI: 10.1016/j.heliyon.2024.e26608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 01/22/2024] [Accepted: 02/15/2024] [Indexed: 02/27/2024] Open
Abstract
Whole body vibration (WBV) is a form of passive exercise that offers an alternative physical training to aged individuals with limitations in their physical and mental capabilities. The aim of the present study was to explore the therapeutic potential of five weeks of WBV on anxiety-like behaviors as well as learning and memory abilities in senescent thirty months old rats. Animals were exposed to 5 min vibration twice per day, five times per week during the five consecutive weeks. Pseudo WBV treated animals served as controls. After five weeks of WBV treatment, animals were tested for anxiety-like behavior by the open field test and for spatial and object memory functions by the novel and spatial object recognition tests, respectively. As a result, anxiety-like and exploratory behaviors were significantly improved in the WBV treated group compared to the pseudo WBV group. Furthermore, WBV treatment increased discrimination performance in both spatial and object memory function testing. These results indicate that WBV treatment in thirty months old rats seems to have comparable beneficial effects on age-related emotional and cognitive performance as what has been reported in younger age groups.
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Affiliation(s)
- Tamás Oroszi
- Department of Molecular Neurobiology, Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, Groningen, the Netherlands
- Research Center for Molecular Exercise Science, Hungarian University of Sports Science, Budapest, Hungary
| | - Klára Felszeghy
- Research Center for Molecular Exercise Science, Hungarian University of Sports Science, Budapest, Hungary
- Department of Morphology and Physiology, Health Science Faculty, Semmelweis University, Budapest, Hungary
| | - Paul G.M. Luiten
- Department of Molecular Neurobiology, Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, Groningen, the Netherlands
| | - Regien G. Schoemaker
- Department of Molecular Neurobiology, Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, Groningen, the Netherlands
| | - Eddy A. van der Zee
- Department of Molecular Neurobiology, Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, Groningen, the Netherlands
| | - Csaba Nyakas
- Research Center for Molecular Exercise Science, Hungarian University of Sports Science, Budapest, Hungary
- Department of Morphology and Physiology, Health Science Faculty, Semmelweis University, Budapest, Hungary
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3
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Xing J, Chen K, Gao S, Pousse M, Ying Y, Wang B, Chen L, Wang C, Wang L, Hu W, Lu Y, Gilson E, Ye J. Protein phosphatase 2A activators reverse age-related behavioral changes by targeting neural cell senescence. Aging Cell 2023; 22:e13780. [PMID: 36644807 PMCID: PMC10014060 DOI: 10.1111/acel.13780] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 12/04/2022] [Accepted: 12/19/2022] [Indexed: 01/17/2023] Open
Abstract
The contribution of cellular senescence to the behavioral changes observed in the elderly remains elusive. Here, we observed that aging is associated with a decline in protein phosphatase 2A (PP2A) activity in the brains of zebrafish and mice. Moreover, drugs activating PP2A reversed age-related behavioral changes. We developed a transgenic zebrafish model to decrease PP2A activity in the brain through knockout of the ppp2r2c gene encoding a regulatory subunit of PP2A. Mutant fish exhibited the behavioral phenotype observed in old animals and premature accumulation of neural cells positive for markers of cellular senescence, including senescence-associated β-galactosidase, elevated levels cdkn2a/b, cdkn1a, senescence-associated secretory phenotype gene expression, and an increased level of DNA damage signaling. The behavioral and cell senescence phenotypes were reversed in mutant fish through treatment with the senolytic ABT263 or diverse PP2A activators as well as through cdkn1a or tp53 gene ablation. Senomorphic function of PP2A activators was demonstrated in mouse primary neural cells with downregulated Ppp2r2c. We conclude that PP2A reduction leads to neural cell senescence thereby contributing to age-related behavioral changes and that PP2A activators have senotherapeutic properties against deleterious behavioral effects of brain aging.
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Affiliation(s)
- Jun Xing
- Geriatric Department, Geriatric Medical Center, Shanghai Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,International Laboratory in Cancer, Aging and Hematology, Shanghai Jiao Tong University School of Medicine/Ruijin Hospital/CNRS/Inserm/Côte d'Azur University, Shanghai, China
| | - Kehua Chen
- Geriatric Department, Geriatric Medical Center, Shanghai Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,International Laboratory in Cancer, Aging and Hematology, Shanghai Jiao Tong University School of Medicine/Ruijin Hospital/CNRS/Inserm/Côte d'Azur University, Shanghai, China
| | - Shuaiyun Gao
- Geriatric Department, Geriatric Medical Center, Shanghai Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,International Laboratory in Cancer, Aging and Hematology, Shanghai Jiao Tong University School of Medicine/Ruijin Hospital/CNRS/Inserm/Côte d'Azur University, Shanghai, China
| | - Mélanie Pousse
- International Laboratory in Cancer, Aging and Hematology, Shanghai Jiao Tong University School of Medicine/Ruijin Hospital/CNRS/Inserm/Côte d'Azur University, Shanghai, China.,IRCAN, Côte d'Azur University, CNRS, Inserm, Nice, France
| | - Yilin Ying
- Geriatric Department, Geriatric Medical Center, Shanghai Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,International Laboratory in Cancer, Aging and Hematology, Shanghai Jiao Tong University School of Medicine/Ruijin Hospital/CNRS/Inserm/Côte d'Azur University, Shanghai, China.,IRCAN, Côte d'Azur University, CNRS, Inserm, Nice, France
| | - Bo Wang
- Geriatric Department, Geriatric Medical Center, Shanghai Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,International Laboratory in Cancer, Aging and Hematology, Shanghai Jiao Tong University School of Medicine/Ruijin Hospital/CNRS/Inserm/Côte d'Azur University, Shanghai, China
| | - Lianxiang Chen
- Geriatric Department, Geriatric Medical Center, Shanghai Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,International Laboratory in Cancer, Aging and Hematology, Shanghai Jiao Tong University School of Medicine/Ruijin Hospital/CNRS/Inserm/Côte d'Azur University, Shanghai, China
| | - Cuicui Wang
- Geriatric Department, Geriatric Medical Center, Shanghai Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,International Laboratory in Cancer, Aging and Hematology, Shanghai Jiao Tong University School of Medicine/Ruijin Hospital/CNRS/Inserm/Côte d'Azur University, Shanghai, China
| | - Lei Wang
- Geriatric Department, Geriatric Medical Center, Shanghai Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Weiguo Hu
- Geriatric Department, Geriatric Medical Center, Shanghai Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yiming Lu
- Geriatric Department, Geriatric Medical Center, Shanghai Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,International Laboratory in Cancer, Aging and Hematology, Shanghai Jiao Tong University School of Medicine/Ruijin Hospital/CNRS/Inserm/Côte d'Azur University, Shanghai, China
| | - Eric Gilson
- International Laboratory in Cancer, Aging and Hematology, Shanghai Jiao Tong University School of Medicine/Ruijin Hospital/CNRS/Inserm/Côte d'Azur University, Shanghai, China.,IRCAN, Côte d'Azur University, CNRS, Inserm, Nice, France.,Department of Genetics, CHU, Nice, France
| | - Jing Ye
- Geriatric Department, Geriatric Medical Center, Shanghai Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,International Laboratory in Cancer, Aging and Hematology, Shanghai Jiao Tong University School of Medicine/Ruijin Hospital/CNRS/Inserm/Côte d'Azur University, Shanghai, China
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4
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Zhang YX, Wei QY, Wang YT, Zeng LP, Sun SY, Wu YF, Ren CY, Wang F, Chen GH, Cao L. A postpartum enriched environment rescues impaired cognition and oxidative markers in aged mice with gestational inflammation. Brain Behav 2022; 12:e2817. [PMID: 36409568 PMCID: PMC9759132 DOI: 10.1002/brb3.2817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Revised: 10/16/2022] [Accepted: 10/22/2022] [Indexed: 11/23/2022] Open
Abstract
INTRODUCTION Previous studies have shown that gestational inflammation can accelerate age-associated cognitive decline (AACD) in maternal mice; enriched environments (EEs) have been reported to protect normally aging mice from AACD and improve mitochondrial function. However, it is unclear whether the nitrosative stress-related proteins tet methylcytosine dioxygenase 1 (TET1) and S-nitrosoglutathione reductase (GSNOR) are involved in the accelerated aging process of gestational inflammation and whether EEs can slow this process. METHODS In this study, CD-1 female mice on the 15th day of pregnancy were injected with bacterial lipopolysaccharide (50 μg/kg; LPS group) or an equivalent amount of normal saline (CON group) from the abdominal cavity for 4 consecutive days. Twenty-one days after delivery, half of the LPS-treated mice were randomly selected for EE until the end of the behavioral experiment (LPS-E group). When the female rats were raised to 6 months and 18 months of age, the Morris water maze (MWM) was used to detect spatial learning and memory ability; RT-PCR and Western blots were used to measure the mRNA and protein levels of hippocampal TET1 and GSNOR. RESULTS As for the control group, compared with 6-month-old mice, the spatial learning and memory ability of 18-month-old mice decreased, and the hippocampal TET1 and GSNOR mRNA and protein levels were decreased. Gestational inflammation exacerbated these age-related changes, but an EE alleviated the effects. Pearson's correlation analysis indicated that performance during the learning and memory periods in the MWM correlated with the levels of hippocampal TET1 and GSNOR. CONCLUSIONS Our findings suggest that gestational inflammation accelerates age-related learning and memory impairments and that postpartum EE exposure could alleviate these changes. These effects may be related to hippocampal TET1 and GSNOR expression.
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Affiliation(s)
- Yu-Xin Zhang
- Department of Neurology, the Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, P. R. China.,Department of Neurology, Bengbu Second People's Hospital, Bengbu, Anhui Province, P. R. China
| | - Qi-Yao Wei
- Department of Neurology, the Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, P. R. China
| | - Ya-Tao Wang
- Department of Neurology (Sleep Disorders), the Affiliated Chaohu Hospital of Anhui Medical University, Hefei (Chaohu), Anhui, P. R. China
| | - Li-Ping Zeng
- Department of Neurology (Sleep Disorders), the Affiliated Chaohu Hospital of Anhui Medical University, Hefei (Chaohu), Anhui, P. R. China
| | - Shi-Yu Sun
- Department of Neurology, The First Affiliated Hospital of Anhui University of Science and Technology, Huainan, Anhui Province, P. R. China
| | - Yong-Fang Wu
- Department of Neurology (Sleep Disorders), the Affiliated Chaohu Hospital of Anhui Medical University, Hefei (Chaohu), Anhui, P. R. China
| | - Chong-Yang Ren
- Department of Neurology (Sleep Disorders), the Affiliated Chaohu Hospital of Anhui Medical University, Hefei (Chaohu), Anhui, P. R. China
| | - Fang Wang
- Department of Neurology, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, P. R. China
| | - Gui-Hai Chen
- Department of Neurology (Sleep Disorders), the Affiliated Chaohu Hospital of Anhui Medical University, Hefei (Chaohu), Anhui, P. R. China
| | - Lei Cao
- Department of Neurology, the Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, P. R. China
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5
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Cárdenas-Tueme M, Trujillo-Villarreal LÁ, Ramírez-Amaya V, Garza-Villarreal EA, Camacho-Morales A, Reséndez-Pérez D. Fornix volumetric increase and microglia morphology contribute to spatial and recognition-like memory decline in ageing male mice. Neuroimage 2022; 252:119039. [PMID: 35227858 DOI: 10.1016/j.neuroimage.2022.119039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 02/07/2022] [Accepted: 02/24/2022] [Indexed: 10/19/2022] Open
Abstract
Ageing displays a low-grade pro-inflammatory profile in blood and the brain. Accumulation of pro-inflammatory cytokines, microglia activation and volumetric changes in the brain correlate with cognitive decline in ageing models. However, the interplay between them is not totally understood. Here, we aimed to globally identify an age-dependent pro-inflammatory profile and microglia morphological plasticity that favors major volume changes in the brain associated with cognitive decline. Cluster analysis of behavioral data obtained from 2-,12- and 20-month-old male C57BL/6 mice revealed age-dependent cognitive decline after the Y-maze, Barnes maze, object recognition (NORT) and object location tests (OLT). Global magnetic resonance imageing (MRI) analysis by deformation-based morphometry (DBM) in the brain identified a volume increase in the fornix and a decrease in the left medial entorhinal cortex (MEntC) during ageing. Notably, the fornix shows an increase in the accumulation of pro-inflammatory cytokines, whereas the left MEntC displays a decrease. Morphological assessment of microglia also confirms an active and dystrophic phenotype in the fornix and a surveillance phenotype in the left MEntC. Finally, biological modeling revealed that age-related volume increase in the fornix was associated with dystrophic microglia and cognitive impairment, as evidenced by failure on tasks examining memory of object location and novelty. Our results propose that the morphological plasticity of microglia might contribute to volumetric changes in brain regions associated with cognitive decline during physiological ageing.
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Affiliation(s)
- Marcela Cárdenas-Tueme
- Universidad Autonoma de Nuevo León, Facultad de Ciencias Biológicas, Departamento de Biología Celular y Genética, San Nicolás de los Garza, Nuevo León, México
| | - Luis Ángel Trujillo-Villarreal
- Universidad Autonoma de Nuevo León, Facultad de Medicina, Departamento de Bioquímica, Monterrey, Nuevo León, México; Universidad Autonoma de Nuevo León, Centro de Investigación y Desarrollo en Ciencias de la Salud, Unidad de Neurometabolismo, Monterrey, Nuevo León, México
| | - Victor Ramírez-Amaya
- Instituto de Investigación Médica Mercedes y Martín Ferreyra INIMEC-CONICET- UNC, Friuli 2434, Colinas de Vélez Sarsfield, Córdoba 5016, Argentina
| | - Eduardo A Garza-Villarreal
- Instituto de Neurobiología, Universidad Nacional Autónoma de México Campus Juriquilla, Querétaro, México
| | - Alberto Camacho-Morales
- Universidad Autonoma de Nuevo León, Facultad de Medicina, Departamento de Bioquímica, Monterrey, Nuevo León, México; Universidad Autonoma de Nuevo León, Centro de Investigación y Desarrollo en Ciencias de la Salud, Unidad de Neurometabolismo, Monterrey, Nuevo León, México.
| | - Diana Reséndez-Pérez
- Universidad Autonoma de Nuevo León, Facultad de Ciencias Biológicas, Departamento de Biología Celular y Genética, San Nicolás de los Garza, Nuevo León, México.
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Schnell AK, Clayton NS, Hanlon RT, Jozet-Alves C. Episodic-like memory is preserved with age in cuttlefish. Proc Biol Sci 2021; 288:20211052. [PMID: 34403629 PMCID: PMC8370807 DOI: 10.1098/rspb.2021.1052] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Episodic memory, remembering past experiences based on unique what–where–when components, declines during ageing in humans, as does episodic-like memory in non-human mammals. By contrast, semantic memory, remembering learnt knowledge without recalling unique what–where–when features, remains relatively intact with advancing age. The age-related decline in episodic memory likely stems from the deteriorating function of the hippocampus in the brain. Whether episodic memory can deteriorate with age in species that lack a hippocampus is unknown. Cuttlefish are molluscs that lack a hippocampus. We test both semantic-like and episodic-like memory in sub-adults and aged-adults nearing senescence (n = 6 per cohort). In the semantic-like memory task, cuttlefish had to learn that the location of a food resource was dependent on the time of day. Performance, measured as proportion of correct trials, was comparable across age groups. In the episodic-like memory task, cuttlefish had to solve a foraging task by retrieving what–where–when information about a past event with unique spatio-temporal features. In this task, performance was comparable across age groups; however, aged-adults reached the success criterion (8/10 correct choices in consecutive trials) significantly faster than sub-adults. Contrary to other animals, episodic-like memory is preserved in aged cuttlefish, suggesting that memory deterioration is delayed in this species.
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Affiliation(s)
- Alexandra K Schnell
- Normandie Univ., UNICAEN, Univ Rennes, CNRS, UMR EthoS 6552, Caen, France.,Department of Psychology, University of Cambridge, Cambridge, UK.,Marine Biological Laboratory, Woods Hole, MA 02543, USA
| | - Nicola S Clayton
- Department of Psychology, University of Cambridge, Cambridge, UK
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7
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Wu YF, Zhang YM, Ge HH, Ren CY, Zhang ZZ, Cao L, Wang F, Chen GH. Effects of Embryonic Inflammation and Adolescent Psychosocial Environment on Cognition and Hippocampal Staufen in Middle-Aged Mice. Front Aging Neurosci 2020; 12:578719. [PMID: 33024434 PMCID: PMC7516039 DOI: 10.3389/fnagi.2020.578719] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 08/24/2020] [Indexed: 12/21/2022] Open
Abstract
Accumulating evidence has indicated that embryonic inflammation could accelerate age-associated cognitive impairment, which can be attributed to dysregulation of synaptic plasticity-associated proteins, such as RNA-binding proteins (RBPs). Staufen is a double-stranded RBP that plays a critical role in the modulation of synaptic plasticity and memory. However, relatively few studies have investigated how embryonic inflammation affects cognition and neurobiology during aging, or how the adolescent psychosocial environment affects inflammation-induced remote cognitive impairment. Consequently, the aim of this study was to investigate whether these adverse factors can induce changes in Staufen expression, and whether these changes are correlated with cognitive impairment. In our study, CD-1 mice were administered lipopolysaccharides (LPS, 50 μg/kg) or an equal amount of saline (control) intraperitoneally during days 15–17 of gestation. At 2 months of age, male offspring were randomly exposed to stress (S), an enriched environment (E), or not treated (CON) and then assigned to five groups: LPS, LPS+S, LPS+E, CON, and CON+S. Mice were evaluated at 3-month-old (young) and 15-month-old (middle-aged). Cognitive function was assessed using the Morris water maze test, while Staufen expression was examined at both the protein and mRNA level using immunohistochemistry/western blotting and RNAscope technology, respectively. The results showed that the middle-aged mice had worse cognitive performance and higher Staufen expression than young mice. Embryonic inflammation induced cognitive impairment and increased Staufen expression in the middle-aged mice, whereas adolescent stress/an enriched environment would accelerated/mitigated these effects. Meanwhile, Staufen expression was closely correlated with cognitive performance. Our findings suggested embryonic inflammation can accelerate age-associated learning and memory impairments, and these effects may be related to the Staufen expression.
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Affiliation(s)
- Yong-Fang Wu
- Department of Neurology (Sleep Disorders), The Affiliated Chaohu Hospital of Anhui Medical University, Hefei, China
| | - Yue-Ming Zhang
- Department of Neurology (Sleep Disorders), The Affiliated Chaohu Hospital of Anhui Medical University, Hefei, China
| | - He-Hua Ge
- Department of Neurology (Sleep Disorders), The Affiliated Chaohu Hospital of Anhui Medical University, Hefei, China
| | - Chong-Yang Ren
- Department of Neurology (Sleep Disorders), The Affiliated Chaohu Hospital of Anhui Medical University, Hefei, China
| | - Zhe-Zhe Zhang
- Department of Neurology and Critical Care, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Lei Cao
- Department of Neurology, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Fang Wang
- Department of Neurology and Critical Care, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Gui-Hai Chen
- Department of Neurology (Sleep Disorders), The Affiliated Chaohu Hospital of Anhui Medical University, Hefei, China
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8
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Li M, Su S, Cai W, Cao J, Miao X, Zang W, Gao S, Xu Y, Yang J, Tao YX, Ai Y. Differentially Expressed Genes in the Brain of Aging Mice With Cognitive Alteration and Depression- and Anxiety-Like Behaviors. Front Cell Dev Biol 2020; 8:814. [PMID: 33015035 PMCID: PMC7493670 DOI: 10.3389/fcell.2020.00814] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 07/31/2020] [Indexed: 01/21/2023] Open
Abstract
Despite the great increase in human lifespan with improved medical care, the physiological and pathological changes such as memory and cognitive disorders and associated anxiety and depression are major concern with aging. Molecular mechanisms underlying these changes are little known. The present study examined the differentially expressed genes (DEGs) and the genes with differentially expressed isoforms in three brain regions, anterior cingulate cortex (ACC), amygdala and hippocampus, throughout the lifespan of mice. Compared to 2-month old mice, both 12- and 24-month old mice displayed memory and cognitive impairments in the Morris water maze, Y-maze, and novel object recognition tests and depression- and anxiety-like behaviors in the tail suspension, forced swimming, open field, and elevated plus maze tests. RNA sequencing analysis identified 634 and 1078 DEGs in ACC, 453 and 1015 DEGs in the amygdala and 884 and 1054 DEGs in hippocampus in the 12- and 24-month old mice, respectively. Similarly, many genes with differentially expressed isoforms were also identified in these three brain regions in the 12- and 24-month old mice. Further functional analysis revealed that many DEGs and the genes with differentially expressed isoforms in the ACC and amygdala were mapped to depression- and anxiety-related genes, respectively and that a lot of DEGs and the genes with differentially expressed isoforms in hippocampus were mapped to cognitive dysfunction-related genes from both 12- and 24-month old mice. All of these mapped DEGs and the genes with differentially expressed isoforms were closely related to neuroinflammation. Our findings indicate that these neuroinflammation-related DEGs and the genes with differentially expressed isoforms are likely new targets in the management of memory/cognitive impairment and emotional disorders during the aging.
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Affiliation(s)
- Mengqi Li
- Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Neuroscience Research Institute, Zhengzhou University Academy of Medical Sciences, Zhengzhou, China
| | - Songxue Su
- Neuroscience Research Institute, Zhengzhou University Academy of Medical Sciences, Zhengzhou, China.,Department of Anatomy, College of Basic Medicine, Zhengzhou University, Zhengzhou, China
| | - Weihua Cai
- Neuroscience Research Institute, Zhengzhou University Academy of Medical Sciences, Zhengzhou, China.,Department of Anatomy, College of Basic Medicine, Zhengzhou University, Zhengzhou, China
| | - Jing Cao
- Neuroscience Research Institute, Zhengzhou University Academy of Medical Sciences, Zhengzhou, China.,Department of Anatomy, College of Basic Medicine, Zhengzhou University, Zhengzhou, China
| | - Xuerong Miao
- Department of Anesthesiology and Intensive Care, Third Affiliated Hospital of Second Military Medical University, Shanghai, China
| | - Weidong Zang
- Neuroscience Research Institute, Zhengzhou University Academy of Medical Sciences, Zhengzhou, China.,Department of Anatomy, College of Basic Medicine, Zhengzhou University, Zhengzhou, China
| | - Shichao Gao
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, The State University of New York, Buffalo, NY, United States
| | - Ying Xu
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, The State University of New York, Buffalo, NY, United States
| | - Jianjun Yang
- Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Neuroscience Research Institute, Zhengzhou University Academy of Medical Sciences, Zhengzhou, China
| | - Yuan-Xiang Tao
- Department of Anesthesiology, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, United States
| | - Yanqiu Ai
- Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Neuroscience Research Institute, Zhengzhou University Academy of Medical Sciences, Zhengzhou, China
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Expósito AN, Morillas E, Gómez-Chacón B, Gallo M. Prefrontal cortex activity patterns during taste neophobia habituation in adult and aged rats. Behav Brain Res 2020; 392:112717. [PMID: 32479848 DOI: 10.1016/j.bbr.2020.112717] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 05/13/2020] [Accepted: 05/18/2020] [Indexed: 12/19/2022]
Abstract
Age-related memory decline has been associated with changes in the medial prefrontal cortex (mPFC) function. In order to explore the role of mPFC in taste recognition memory, we have assessed mPFC c-Fos immunoreactivity in adult (5-month-old) and aged (24-month-old) male Wistar rats during the first (Novel), second (Familiar I), and sixth (Familiar II) exposure to a cider vinegar solution. Adult brains showed higher c-Fos expression in the ventral but not the dorsal region of mPFC during the second taste exposure. Interestingly, old brains exhibited an altered activity pattern selectively in the dorsal peduncular cortex (DP) which can be associated with a delayed attenuation of vinegar neophobia in this group. These results support the involvement of this area in the formation of safe taste memory. Further research is needed for understanding the role of DP in taste recognition memory and the impact of aging on it.
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Affiliation(s)
- A N Expósito
- Dept. of Psychobiology. Institute of Neurosciences, Center for Biomedical Research (CIBM), University of Granada, Spain.
| | - E Morillas
- Dept. of Psychobiology. Institute of Neurosciences, Center for Biomedical Research (CIBM), University of Granada, Spain
| | - B Gómez-Chacón
- Dept. of Psychobiology. Institute of Neurosciences, Center for Biomedical Research (CIBM), University of Granada, Spain
| | - M Gallo
- Dept. of Psychobiology. Institute of Neurosciences, Center for Biomedical Research (CIBM), University of Granada, Spain
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Wimmer ME, Blackwell JM, Abel T. Rolipram treatment during consolidation ameliorates long-term object location memory in aged male mice. Neurobiol Learn Mem 2020; 169:107168. [PMID: 31962134 DOI: 10.1016/j.nlm.2020.107168] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 01/08/2020] [Accepted: 01/16/2020] [Indexed: 10/25/2022]
Abstract
Normal aging is accompanied by cognitive and memory impairments that negatively impact quality of life for the growing elderly population. Hippocampal function is most vulnerable to the deleterious effects of aging, and deficits in hippocampus-dependent memories are common amongst aged individuals. Moreover, signaling networks such as the cAMP/PKA/CREB pathway, which are critical for memory consolidation, are dampened in healthy aged subjects. Phosphodiesterase (PDE) enzymes that break down cAMP are also affected by aging, and increased break down of cAMP by PDEs may contribute to reduced activity of the cAMP/PKA/CREB signaling network in the brain of aged individuals. Here, we report that the PDE4 inhibitor rolipram administered during consolidation of hippocampus-dependent object location memory improves aged-related spatial memory deficits in aged mice.
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Affiliation(s)
- Mathieu E Wimmer
- Department of Psychology and Program in Neuroscience, Temple University, Philadelphia, PA 19122, USA
| | - Jennifer M Blackwell
- Neuroscience Graduate Group, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Ted Abel
- Department of Molecular Physiology and Biophysics, Iowa Neuroscience Institute, University of Iowa, Iowa City, IA 52242, USA.
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Komanduri M, Gondalia S, Scholey A, Stough C. The microbiome and cognitive aging: a review of mechanisms. Psychopharmacology (Berl) 2019; 236:1559-1571. [PMID: 31055629 DOI: 10.1007/s00213-019-05231-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 03/18/2019] [Indexed: 12/26/2022]
Abstract
Gut microbiota plays an intrinsic role in communication between the gut and the brain and is capable of influencing the host brain by producing neurotransmitters and neurotrophins, the modulation of inflammatory processes amongst other key mechanisms. Increased age is also associated with changes in these key biological processes and impairments in a range of cognitive processes. We hypothesise several mechanisms in which gut microbiota may modulate changes in cognitive function with age. In this review, we discuss issues related to the measurement of cognition in the elderly and in particular outline a standardised model of cognition that could be utilised to better understand cognitive outcomes in future studies examining the relationship between gut microbiota and cognition in the elderly. We then review biological processes such as oxidative stress and inflammation which are related to cognitive changes with age and which are also influenced by our gut microbiota. Finally, we outline other potential mechanisms by which the gut microbiota may influence cognition.
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Affiliation(s)
- Mrudhula Komanduri
- Centre for Human Psychopharmacology, Swinburne University of Technology, PO Box 218, Hawthorn, Melbourne, Victoria, Australia
| | - Shakuntla Gondalia
- Centre for Human Psychopharmacology, Swinburne University of Technology, PO Box 218, Hawthorn, Melbourne, Victoria, Australia
| | - Andrew Scholey
- Centre for Human Psychopharmacology, Swinburne University of Technology, PO Box 218, Hawthorn, Melbourne, Victoria, Australia
| | - Con Stough
- Centre for Human Psychopharmacology, Swinburne University of Technology, PO Box 218, Hawthorn, Melbourne, Victoria, Australia.
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