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Luo X, Wang Y, Zhu Z, Ping J, Hou B, Shan W, Feng Z, Lin Y, Zhang L, Zhang Y, Wang Y. Association between window ventilation frequency and depressive symptoms among older Chinese adults. J Affect Disord 2024; 368:607-614. [PMID: 39303883 DOI: 10.1016/j.jad.2024.09.122] [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: 01/18/2024] [Revised: 09/15/2024] [Accepted: 09/17/2024] [Indexed: 09/22/2024]
Abstract
OBJECTIVES Indoor air pollution exposure is harmful to people's physical and mental health, especially in the elderly population. Depressive symptoms are the most common mental health issue among elderly individuals. However, evidence linking the frequency of indoor natural ventilation to depressive symptoms in the elderly population is limited. METHODS This study included 7887 individuals 65 years and older from 2017 to 2018 the China Longitudinal Healthy Longevity Survey (CLHLS). The frequency of indoor window ventilation was measured as the self-reported times of ventilation of indoor window per week in each season, and the four seasons' scores were added up to calculate the annual ventilation frequency. Depressive symptoms were measured by the 10-item Center for Epidemiologic Studies Short Depression Scale (CESD). Using three models adjusted for demographic, socio-economic, health status, and environmental factors successively, the correlation between indoor window ventilation frequency and depressive symptoms was verified through logistic regression. RESULTS Among the 7887 elderly people included in this study, 1952 (24.7 %) had depressive symptoms. In the fully adjusted model, compared with the lower indoor annual ventilation frequency group, high indoor annual ventilation frequency group was significantly associated with a 33 % (OR: 0.67, 95%CI: 0.51-0.88) lower probability of depressive symptoms. Subgroup analysis and sensitivity analysis yielded similar results. CONCLUSIONS High frequency of window ventilation is significantly associated with the lower risk of depressive symptoms in Chinese individuals aged 65 and older. This result provides strong evidence for health intervention and policy formulation.
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Affiliation(s)
- Xinxin Luo
- Department of Psychiatry, The Third People's Hospital of Zhongshan City, Zhongshan, China
| | - Yuanlong Wang
- Department of Psychiatry, The Third People's Hospital of Zhongshan City, Zhongshan, China
| | - Zifan Zhu
- Anhui Mental Health Center, The Fourth People's Hospital, Hefei, China
| | - Junjiao Ping
- Department of Psychiatry, The Third People's Hospital of Zhongshan City, Zhongshan, China
| | - Biao Hou
- Capital Medical University, Beijing, China
| | - Wei Shan
- South China University of Technology, Guangzhou, Guangdong, China
| | - Zisheng Feng
- Shenzhen Mental Health Centre, Shenzhen Kangning Hospital, Shenzhen, China
| | - Yanan Lin
- Shenzhen Mental Health Centre, Shenzhen Kangning Hospital, Shenzhen, China
| | - Liangying Zhang
- Shenzhen Mental Health Centre, Shenzhen Kangning Hospital, Shenzhen, China
| | - Yingli Zhang
- Shenzhen Mental Health Centre, Shenzhen Kangning Hospital, Shenzhen, China.
| | - Yongjun Wang
- Shenzhen Mental Health Centre, Shenzhen Kangning Hospital, Shenzhen, China; Department of Psychiatry, The Third People's Hospital of Zhongshan City, Zhongshan, China.
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Castle ME, Flanigan ME. The role of brain serotonin signaling in excessive alcohol consumption and withdrawal: A call for more research in females. Neurobiol Stress 2024; 30:100618. [PMID: 38433994 PMCID: PMC10907856 DOI: 10.1016/j.ynstr.2024.100618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 02/01/2024] [Accepted: 02/14/2024] [Indexed: 03/05/2024] Open
Abstract
Alcohol Use Disorder (AUD) is a leading cause of death and disability worldwide, but current treatments are insufficient in fully addressing the symptoms that often lead to relapses in alcohol consumption. The brain's serotonin system has been implicated in AUD for decades and is a major regulator of stress-related behaviors associated with increased alcohol consumption. This review will discuss the current literature on the association between neurobiological adaptations in serotonin systems and AUD in humans as well as the effectiveness of serotonin receptor manipulations on alcohol-related behaviors like consumption and withdrawal. We will further discuss how these findings in humans relate to findings in animal models, including a comparison of systemic pharmacological manipulations modulating alcohol consumption. We next provide a detailed overview of brain region-specific roles for serotonin and serotonin receptor signaling in alcohol-related behaviors in preclinical animal models, highlighting the complexity of forming a cohesive model of serotonin function in AUD and providing possible avenues for more effective therapeutic intervention. Throughout the review, we discuss what is known about sex differences in the sequelae of AUD and the role of serotonin in these sequelae. We stress a critical need for additional studies in women and female animals so that we may build a clearer path to elucidating sex-specific serotonergic mechanisms and develop better treatments.
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Affiliation(s)
- Megan E. Castle
- Bowles Center for Alcohol Studies, University of North Carolina School of Medicine, Chapel Hill, NC, 27599, USA
| | - Meghan E. Flanigan
- Bowles Center for Alcohol Studies, University of North Carolina School of Medicine, Chapel Hill, NC, 27599, USA
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Zaniewska M, Alenina N, Fröhler S, Chen W, Bader M. Ethanol deprivation and central 5-HT deficiency differentially affect the mRNA editing of the 5-HT 2C receptor in the mouse brain. Pharmacol Rep 2023; 75:1502-1521. [PMID: 37923824 PMCID: PMC10661786 DOI: 10.1007/s43440-023-00545-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 09/29/2023] [Accepted: 10/11/2023] [Indexed: 11/06/2023]
Abstract
BACKGROUND Serotonin (5-HT) 5-HT2C receptor mRNA editing (at five sites, A-E), implicated in neuropsychiatric disorders, including clinical depression, remains unexplored during alcohol abstinence-often accompanied by depressive symptoms. METHODS We used deep sequencing to investigate 5-HT2C receptor editing in mice during early ethanol deprivation following prolonged alcohol exposure and mice lacking tryptophan hydroxylase (TPH)2, a key enzyme in central 5-HT production. We also examined Tph2 expression in ethanol-deprived animals using quantitative real-time PCR (qPCR). RESULTS Cessation from chronic 10% ethanol exposure in a two-bottle choice paradigm enhanced immobility time and decreased latency in the forced swim test (FST), indicating a depression-like phenotype. In the hippocampus, ethanol-deprived "high ethanol-drinking" mice displayed reduced Tph2 expression, elevated 5-HT2C receptor editing efficiency, and decreased frequency of the D mRNA variant, encoding the less-edited INV protein isoform. Tph2-/- mice showed attenuated receptor editing in the hippocampus and elevated frequency of non-edited None and D variants. In the prefrontal cortex, Tph2 deficiency increased receptor mRNA editing at site D and reduced the frequency of AB transcript, predicting a reduction in the corresponding partially edited VNI isoform. CONCLUSIONS Our findings reveal differential effects of 5-HT depletion and ethanol cessation on 5-HT2C receptor editing. Central 5-HT depletion attenuated editing in the prefrontal cortex and the hippocampus, whereas ethanol deprivation, coinciding with reduced Tph2 expression in the hippocampus, enhanced receptor editing efficiency specifically in this brain region. This study highlights the interplay between 5-HT synthesis, ethanol cessation, and 5-HT2C receptor editing, providing potential mechanism underlying increased ethanol consumption and deprivation.
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Affiliation(s)
- Magdalena Zaniewska
- Department of Pharmacology, Laboratory of Pharmacology and Brain Biostructure, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna Street, 31-343, Kraków, Poland.
- Max-Delbrück-Center for Molecular Medicine, Robert-Rössle-Str. 10, 13125, Berlin, Germany.
| | - Natalia Alenina
- Max-Delbrück-Center for Molecular Medicine, Robert-Rössle-Str. 10, 13125, Berlin, Germany
- DZHK (German Center for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
| | - Sebastian Fröhler
- Laboratory for New Sequencing Technology, Max-Delbrück-Center for Molecular Medicine, Berlin Institute for Medical Systems Biology, Robert-Rössle-Str. 10, 13125, Berlin, Germany
| | - Wei Chen
- Laboratory for New Sequencing Technology, Max-Delbrück-Center for Molecular Medicine, Berlin Institute for Medical Systems Biology, Robert-Rössle-Str. 10, 13125, Berlin, Germany
- Department of Systems Biology, School of Life Science, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Michael Bader
- Max-Delbrück-Center for Molecular Medicine, Robert-Rössle-Str. 10, 13125, Berlin, Germany
- DZHK (German Center for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
- Charité Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Berlin, Germany
- Institute for Biology, University of Lübeck, Lübeck, Germany
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Singh SV, Ganguly R, Jaiswal K, Yadav AK, Kumar R, Pandey AK. Molecular signalling during cross talk between gut brain axis regulation and progression of irritable bowel syndrome: A comprehensive review. World J Clin Cases 2023; 11:4458-4476. [PMID: 37469740 PMCID: PMC10353503 DOI: 10.12998/wjcc.v11.i19.4458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 05/09/2023] [Accepted: 06/06/2023] [Indexed: 06/30/2023] Open
Abstract
Irritable bowel syndrome (IBS) is a chronic functional disorder which alters gastrointestinal (GI) functions, thus leading to compromised health status. Pathophysiology of IBS is not fully understood, whereas abnormal gut brain axis (GBA) has been identified as a major etiological factor. Recent studies are suggestive for visceral hyper-sensitivity, altered gut motility and dysfunctional autonomous nervous system as the main clinical abnormalities in IBS patients. Bidirectional signalling interactions among these abnormalities are derived through various exogenous and endogenous factors, such as microbiota population and diversity, microbial metabolites, dietary uptake, and psychological abnormalities. Strategic efforts focused to study these interactions including probiotics, antibiotics and fecal transplantations in normal and germ-free animals are clearly suggestive for the pivotal role of gut microbiota in IBS etiology. Additionally, neurotransmitters act as communication tools between enteric microbiota and brain functions, where serotonin (5-hydroxytryptamine) plays a key role in pathophysiology of IBS. It regulates GI motility, pain sense and inflammatory responses particular to mucosal and brain activity. In the absence of a better understanding of various interconnected crosstalks in GBA, more scientific efforts are required in the search of novel and targeted therapies for the management of IBS. In this review, we have summarized the gut microbial composition, interconnected signalling pathways and their regulators, available therapeutics, and the gaps needed to fill for a better management of IBS.
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Affiliation(s)
- Shiv Vardan Singh
- Department of Biochemistry, University of Allahabad, Allahabad (Prayagraj) 211002, Uttar Pradesh, India
| | - Risha Ganguly
- Department of Biochemistry, University of Allahabad, Allahabad (Prayagraj) 211002, Uttar Pradesh, India
| | - Kritika Jaiswal
- Department of Biochemistry, University of Allahabad, Allahabad (Prayagraj) 211002, Uttar Pradesh, India
| | - Aditya Kumar Yadav
- Department of Biochemistry, University of Allahabad, Allahabad (Prayagraj) 211002, Uttar Pradesh, India
| | - Ramesh Kumar
- Department of Biochemistry, University of Allahabad, Allahabad (Prayagraj) 211002, Uttar Pradesh, India
| | - Abhay K Pandey
- Department of Biochemistry, University of Allahabad, Allahabad (Prayagraj) 211002, Uttar Pradesh, India
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Fabio MC, Servin-Bernal IJC, Degano AL, Pautassi RM. Serotonin disruption at gestation alters expression of genes associated with serotonin synthesis and reuptake at weaning. Psychopharmacology (Berl) 2022; 239:3355-3366. [PMID: 36063206 DOI: 10.1007/s00213-022-06228-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 08/27/2022] [Indexed: 12/28/2022]
Abstract
RATIONALE Serotonin (5-HT) is a monoamine neuromodulator that plays a key role in the organization of the central nervous system. 5-HT alterations may be associated to the emergence of social deficits and psychiatric disorders, including anxiety, depression, and substance abuse disorders. Notably, disruption of the 5-HT system during sensitive periods of development seems to exert long-term consequences, including altered anxiety responses and problematic use of alcohol. OBJECTIVE We analyzed, in mice, the effects of transient 5-HT depletion at gestation (a developmental stage when medial prefrontal cortex (mPFC) 5-HT levels depend exclusively on placental 5-HT availability) on 5-HT central synthesis and reuptake at weaning. We also explored if 5-HT disruption at the embryonic stage influences behavioral outcomes that may serve as a proxy for autistic- or anxiety-like phenotypes. METHODS C57/BL6 male and female mice, born from dams treated with a 5-HT synthesis inhibitor (PCPA; 4-Chloro-DL-phenylalanine methyl ester hydrochloride) at gestational days (G)13.5-16.5, were subjected to a behavioral battery that assesses social preference and novelty, compulsive behavior, stereotypies, and ethanol's anti-anxiety effects, at postnatal days (P) 21-28. Afterwards, expression of the genes that encode for 5-HT synthesis (Tph2) and SERT (5-HT transporter) were analyzed in mPFC via real-time RT-PCR. Dopamine 2 receptor (D2R) expression was also analyzed via RT-PCR to further explore possible effects of PCPA on dopaminergic transmission. RESULTS Transient 5-HT disruption at G13.5-16.5 reduced Tph2 expression of both male and female mice in mPFC at P23. Notably, female mice also exhibited higher SERT expression and reduced D2R expression in mPFC. Mice derived from 5-HT depleted dams displayed heightened compulsive behavior at P21, when compared to control mice. Alcohol anti-anxiety effects at early adolescence (P28) were exhibited by mice derived from 5-HT depleted dams, but not by control counterparts. No social deficits or stereotyped behaviors were observed. CONCLUSION Transient 5-HT inhibition at gestation resulted in altered expression of genes involved in 5-HT synthesis and reuptake in mPFC at weaning, a period in which the 5-HT system is still developing. These alterations may exert lingering effects, which translate to significant compulsivity and heightened sensitivity to the anxiolytic effects of alcohol at early adolescence.
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Affiliation(s)
- M C Fabio
- Instituto de Investigaciones Médicas Mercedes y Martín Ferreyra (INIMEC-CONICET-Universidad Nacional de Córdoba), Cordoba, Argentina. .,Facultad de Psicología, Universidad Nacional de Córdoba, Cordoba, Argentina.
| | - I J C Servin-Bernal
- Instituto de Investigaciones Médicas Mercedes y Martín Ferreyra (INIMEC-CONICET-Universidad Nacional de Córdoba), Cordoba, Argentina
| | - A L Degano
- Departamento de Química Biológica Ranwel CaputtoFacultad de Ciencias Químicas, Universidad Nacional de Córdoba, Cordoba, Argentina.,Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC), CONICET, Universidad Nacional de Córdoba, Cordoba, Argentina
| | - R M Pautassi
- Instituto de Investigaciones Médicas Mercedes y Martín Ferreyra (INIMEC-CONICET-Universidad Nacional de Córdoba), Cordoba, Argentina.,Facultad de Psicología, Universidad Nacional de Córdoba, Cordoba, Argentina
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