1
|
Jiang L, Hao Y, Li Q, Dai Z. Cinnamic Acid, Perillic Acid, and Tryptophan Metabolites Differentially Regulate Ion Transport and Serotonin Metabolism and Signaling in the Mouse Ileum In Vitro. Int J Mol Sci 2024; 25:6694. [PMID: 38928404 PMCID: PMC11203607 DOI: 10.3390/ijms25126694] [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: 05/20/2024] [Revised: 06/13/2024] [Accepted: 06/14/2024] [Indexed: 06/28/2024] Open
Abstract
Phytochemicals and tryptophan (Trp) metabolites have been found to modulate gut function and health. However, whether these metabolites modulate gut ion transport and serotonin (5-HT) metabolism and signaling requires further investigation. The aim of this study was to investigate the effects of selected phytochemicals and Trp metabolites on the ion transport and 5-HT metabolism and signaling in the ileum of mice in vitro using the Ussing chamber technique. During the in vitro incubation, vanillylmandelic acid (VMA) reduced (p < 0.05) the short-circuit current, and 100 μM chlorogenic acid (CGA) (p = 0.12) and perillic acid (PA) (p = 0.14) had a tendency to reduce the short-circuit current of the ileum. Compared with the control, PA and N-acetylserotonin treatment upregulated the expression of tryptophan hydroxylase 1 (Tph1), while 100 μM cinnamic acid, indolelactic acid (ILA), and 10 μM CGA or indoleacetaldehyde (IAld) treatments downregulated (p < 0.05) the mRNA levels of Tph1. In addition, 10 μM IAld or 100 μM ILA upregulated (p < 0.05) the expression of monoamine oxidase A (Maoa). However, 10 μM CGA or 100 μM PA downregulated (p < 0.05) Maoa expression. All selected phytochemicals and Trp metabolites upregulated (p < 0.05) the expression of Htr4 and Htr7 compared to that of the control group. VMA and CGA reduced (p < 0.05) the ratios of Htr1a/Htr7 and Htr4/Htr7. These findings may help to elucidate the effects of phytochemicals and Trp metabolites on the regulation of gut ion transport and 5-HT signaling-related gut homeostasis in health and disease.
Collapse
Affiliation(s)
- Lili Jiang
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (L.J.); (Y.H.)
| | - Youling Hao
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (L.J.); (Y.H.)
| | - Qianjun Li
- Laboratory of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China;
| | - Zhaolai Dai
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (L.J.); (Y.H.)
| |
Collapse
|
2
|
Waemong A, Sattayachiti S, Cheaha D, Konthapakdee N. Effects of oral administration of ondansetron, a 5-HT 3 receptor antagonist, on anxiety-related behaviors and colonic hypercontractility in repeated stress-induced mice. Auton Neurosci 2024; 253:103178. [PMID: 38642511 DOI: 10.1016/j.autneu.2024.103178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 03/21/2024] [Accepted: 04/11/2024] [Indexed: 04/22/2024]
Abstract
PURPOSE Chronic psychological stress develops and exacerbates irritable bowel syndrome (IBS). 5-hydroxytryptamine (5-HT) via activation of intestinal 5-HT3 receptors involves impairment of intestinal functions. This study aimed to investigate the effects of ondansetron, a 5-HT3 receptor antagonist, on locomotor activity, anxiety-related behaviors, and colonic functions in repeated water avoidance stress. MATERIALS AND METHODS Food intake and fecal pellet output (FPO) of sham stress (SS), water avoidance stress (WS), and water avoidance stress with oral administration of ondansetron (1 mg/kg BW) (WA) groups were monitored along the water avoidance stress protocol for 10 consecutive days. On day 11, locomotor activity and anxiety-related behaviors were determined using an open field test. Contractile properties of colonic tissues in response to KCl and a cumulative dose of carbachol (CCh) were determined using in vitro organ bath technique. RESULTS FPO was significantly increased in the WS group after 7 days of water avoidance stress, which was reversed in WA group. WS group decreased unsupported rearing behavior compared to WS group, which was not altered in the WA group. The colon of the WS group had a higher tonic contraction in response to CCh than the SS and WA groups, which was reversed with ondansetron pre-incubation. CONCLUSIONS Oral administration of ondansetron prevented increased FPO but did not affect anxiety-related behavior in repeated stress model. Colonic hypercontractility in the stressed mice was related to increased responses to cholinergic-induced contractions, which involved 5-HT3 receptors. Our findings suggest the modulatory roles of 5-HT3 receptors to mediate stress-induced colonic dysfunction.
Collapse
Affiliation(s)
- Affan Waemong
- Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Songkhla 90110, Thailand
| | - Sarunnuch Sattayachiti
- Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Songkhla 90110, Thailand
| | - Dania Cheaha
- Division of Biological Science, Faculty of Science, Prince of Songkla University, Songkhla 90110, Thailand; Biosignal Research Center for Health, Faculty of Science, Prince of Songkla University, Songkhla 90110, Thailand
| | - Nipaporn Konthapakdee
- Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Songkhla 90110, Thailand.
| |
Collapse
|
3
|
McCluskey KE, Stovell KM, Law K, Kostyanovskaya E, Schmidt J, Exner CRT, Dea J, Brimble E, State MW, Willsey AJ, Willsey HR. Autism gene variants disrupt enteric neuron migration and cause gastrointestinal dysmotility. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.28.593642. [PMID: 38854068 PMCID: PMC11160671 DOI: 10.1101/2024.05.28.593642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
The comorbidity of autism spectrum disorders and severe gastrointestinal symptoms is well-established, yet the molecular underpinnings remain unknown. The identification of high-confidence large-effect autism risk genes offers the opportunity to identify convergent, underlying biology by studying these genes in the context of the gastrointestinal system. Here we show that the expression of these genes is enriched in human prenatal gut neurons as well as their migratory progenitors, suggesting that the development and/or function of these neurons may be disrupted by autism-associated pathogenic variants, leading to gastrointestinal dysfunction. Here we document the prevalence of gastrointestinal issues in patients with large-effect variants in sixteen of these genes, highlighting dysmotility, consistent with potential enteric neuron dysfunction. Using the high-throughput diploid frog Xenopus tropicalis , we individually target five of these genes ( SYNGAP1, CHD8, SCN2A, CHD2 , and DYRK1A ) and observe disrupted enteric neuronal progenitor migration for each. More extensive analysis of DYRK1A reveals that perturbation causes gut dysmotility in vivo , which can be ameliorated by treatment with a selective serotonin reuptake inhibitor (escitalopram) or a serotonin receptor 6 agonist, identified by in vivo drug screening. This work suggests that atypical development of enteric neurons contributes to the gastrointestinal distress commonly seen in individuals with autism and that increasing serotonin signaling may be a productive therapeutic avenue.
Collapse
|
4
|
Singh G, Dixit I, Kalman D, Gogineni NT. A Novel Herbal Composition Alleviates Functional Constipation, Reduces Gastrointestinal Transit Time, and Improves Bowel Function in Adults: A Double-Blind, Randomized Clinical Study. JOURNAL OF THE AMERICAN NUTRITION ASSOCIATION 2024:1-14. [PMID: 38691810 DOI: 10.1080/27697061.2024.2346073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Accepted: 04/17/2024] [Indexed: 05/03/2024]
Abstract
BACKGROUND AND OBJECTIVE A recent proof-of-concept pilot clinical study has demonstrated that consumption of CL18100F4, a proprietary herbal blend of Withania somnifera root and Abelmoschus esculentus fruit extracts, significantly relieved the participants from functional constipation and improved their quality of life. The objective of the present randomized, double-blind, placebo-controlled study was to reevaluate the efficacy and tolerability of CL18100F4 in a larger number of subjects. METHODS Male and female subjects (n = 135; age: 25-60 years), selected through Rome-IV criteria for functional constipation, were randomized into placebo and 300 or 500 mg of CL18100F4 groups and supplemented daily over 60 consecutive days. The primary efficacy outcome measure was Patient Assessment of Constipation-Symptoms (PAC-SYM), evaluated at baseline and on days 7, 30, and 60 of supplementation. The secondary efficacy parameters included Patient Assessment of Constipation-Quality of Life (PAC-QOL), Gastrointestinal Symptom Rating Scale (GSRS) scores, Gastrointestinal Transit Time (GIT), and Complete Spontaneous Bowel Movement (CSBM). Serum levels of Interleukin (IL)-6, IL-10, cortisol, gastrin, serotonin, Diamine oxidase (DAO), and Zonulin were measured. RESULTS CL18100F4 supplementation significantly (p < 0.001) reduced the PAC-SYM, PAC-QOL, GSRS scores, and GIT and improved CSBM scores. CL18100F4 significantly improved (p < 0.001) sleep quality and decreased depression and anxiety symptoms in the participants. Notably, relief in constipation symptoms and improved gastrointestinal (GI) function were reported starting from day 7. Furthermore, CL18100F4 supplementation significantly (p < 0.001) increased the serum levels of IL-10, DAO, serotonin, gastrin, reduced IL-6, cortisol, and Zonulin. No major adverse events were observed. Participants' vital signs, hematology, clinical biochemistry, and urinalysis parameters were within the normal ranges. CONCLUSION The present investigation demonstrates that CL18100F4 is tolerable and efficacious in relieving functional constipation, alleviating GI dysfunction, and improving associated non-GI factors in male and female adults.
Collapse
Affiliation(s)
- Gaurav Singh
- Department of General Medicine, Upendra Medicare, Varanasi, Uttar Pradesh, India
| | - Indresh Dixit
- Department of Medicine, Vatsalya Hospital Multi Speciality Center, Varanasi, Uttar Pradesh, India
| | - Douglas Kalman
- College of Osteopathic Medicine, Nova Southeastern University, Ft. Lauderdale, Florida, USA
| | - Naga Tejaswi Gogineni
- Department of General Medicine, Aditya Multi Speciality Hospital, Guntur, Andhra Pradesh, India
| |
Collapse
|
5
|
Valiyeva S, Tiso D, Cerri P, Pisciaroli A, Pietroletti R. Results of medical treatment with psyllium, lactobacillus, and tryptophan (Plurilac® Trio) in obstructive defecation syndrome. Front Surg 2024; 11:1361049. [PMID: 38650661 PMCID: PMC11033349 DOI: 10.3389/fsurg.2024.1361049] [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: 12/24/2023] [Accepted: 03/26/2024] [Indexed: 04/25/2024] Open
Abstract
Introduction The term "obstructive defecation syndrome" (ODS) describes a complex condition characterized by defecatory disorders. Such a condition represents a significant proportion of patients, which is estimated to be up to 30% of patients affected by chronic constipation. Presently, a broad agreement has been reached on diagnostic studies, whereas the choice of treatment that aims to improve the quality of life and/or correct the prevalent abnormalities or all anatomical abnormalities remains controversial. Methods This was a retrospective cohort study on 174 patients out of a total of 232 with ODS who were observed in a specialized university unit of surgical coloproctology between 2018 and 2022. Clinical assessment included examining the values of the Agachan-Wexner constipation score and Patient Assessment of Constipation (PAC)-quality of life (QoL) scores, a full digital anorectal examination, anoscopy, RX defecography, and a urogynecological consultation; a functional anorectal test, an endoanal ultrasound, and colonoscopy were performed in select patients. The patients were reevaluated after an 8-10-week course of medical treatment based on a high-fiber diet and fluid intake and 6 g of psyllium combined with lactobacillus and tryptophan b.i.d. The results were analyzed by means of the Wilcoxon rank-sum test, comparing pretreatment scores with the results at the first follow-up visit. Results After 8-10 weeks of conservative treatment, 128 patients declared full satisfaction, 29 reported moderate satisfaction, and 17 (9.7%) declared no improvement. Among these 17, there were 5 patients with paradoxical puborectal contractions. The value of the Agachan-Wexner constipation score after treatment decreased from the pretreatment Agachan-Wexner constipation score mean value of 23.4 ± 3.7 (mean ± SD range 15-27) to a mean value of 5.3 ± 0.7 (range 3-8, p < 0.001). The quality of life improved, as shown by the PAC-QoL score, indicating great improvement in social relationships. Conclusions Given the benefits of conservative therapies, they represent a cornerstone in the treatment of ODS, a complex disorder. Diet and bulking agents are mandatory forms of treatment prior to making any surgical attempt, also considering the fact that the psychosomatic component of ODS is an essential prerequisite to match patient expectations.
Collapse
Affiliation(s)
- Sayali Valiyeva
- Department of Applied Clinical and Biotechnological Sciences, University of L’Aquila, L'Aquila, Italy
| | - Domenico Tiso
- Clinical Nutrition, “Villa Maria” Hospital, Rimini, Italy
| | - Paolo Cerri
- General Surgery Department, Val Vibrata Hospital, Sant’Omero, Italy
| | | | - Renato Pietroletti
- Department of Applied Clinical and Biotechnological Sciences, University of L’Aquila, L'Aquila, Italy
| |
Collapse
|
6
|
Dziedzic A, Maciak K, Bliźniewska-Kowalska K, Gałecka M, Kobierecka W, Saluk J. The Power of Psychobiotics in Depression: A Modern Approach through the Microbiota-Gut-Brain Axis: A Literature Review. Nutrients 2024; 16:1054. [PMID: 38613087 PMCID: PMC11013390 DOI: 10.3390/nu16071054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 03/28/2024] [Accepted: 04/02/2024] [Indexed: 04/14/2024] Open
Abstract
The microbiota-gut-brain (MGB) axis is a complex communication network linking the gut, microbiota, and brain, influencing various aspects of health and disease. Dysbiosis, a disturbance in the gut microbiome equilibrium, can significantly impact the MGB axis, leading to alterations in microbial composition and function. Emerging evidence highlights the connection between microbiota alterations and neurological and psychiatric disorders, including depression. This review explores the potential of psychobiotics in managing depressive disorders, emphasizing their role in restoring microbial balance and influencing the MGB axis. Psychobiotics exhibit positive effects on the intestinal barrier, immune response, cortisol levels, and the hypothalamic-pituitary-adrenal (HPA) axis. Studies suggest that probiotics may serve as an adjunct therapy for depression, especially in treatment-resistant cases. This review discusses key findings from studies on psychobiotics interventions, emphasizing their impact on the gut-brain axis and mental health. The increasing acceptance of the expanded concept of the MGB axis underscores the importance of microorganisms in mental well-being. As our understanding of the microbiome's role in health and disease grows, probiotics emerge as promising agents for addressing mental health issues, providing new avenues for therapeutic interventions in depressive disorders.
Collapse
Affiliation(s)
- Angela Dziedzic
- University of Lodz, Faculty of Biology and Environmental Protection, Department of General Biochemistry, Pomorska 141/143, 90-236 Lodz, Poland; (K.M.); (W.K.); (J.S.)
| | - Karina Maciak
- University of Lodz, Faculty of Biology and Environmental Protection, Department of General Biochemistry, Pomorska 141/143, 90-236 Lodz, Poland; (K.M.); (W.K.); (J.S.)
| | | | - Małgorzata Gałecka
- Department of Psychotherapy, Medical University of Lodz, Aleksandrowska 159, 91-229 Lodz, Poland;
| | - Weronika Kobierecka
- University of Lodz, Faculty of Biology and Environmental Protection, Department of General Biochemistry, Pomorska 141/143, 90-236 Lodz, Poland; (K.M.); (W.K.); (J.S.)
| | - Joanna Saluk
- University of Lodz, Faculty of Biology and Environmental Protection, Department of General Biochemistry, Pomorska 141/143, 90-236 Lodz, Poland; (K.M.); (W.K.); (J.S.)
| |
Collapse
|
7
|
Velez A, Kaul A, El-Chammas KI, Knowlton L, Madis E, Sahay R, Fei L, Stiehl S, Santucci NR. Safety and Effectiveness of Prucalopride in Children with Functional Constipation with and without Upper Symptoms. Paediatr Drugs 2024; 26:187-195. [PMID: 38175354 PMCID: PMC11114085 DOI: 10.1007/s40272-023-00612-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/06/2023] [Indexed: 01/05/2024]
Abstract
INTRODUCTION Pediatric prucalopride studies for treatment of gastrointestinal (GI) disorders have reported mixed results. We aimed to assess the safety and effectiveness of prucalopride in functional constipation (FC) with and without upper GI symptoms. METHODS Retrospective data on patients with FC receiving combined prucalopride and conventional therapy was compared with those receiving conventional therapy alone within 12 months. Thirty patients on combined therapy and those on conventional therapy were each matched on the basis of age, gender, race, and presence of fecal soiling. Response (complete, partial, or no resolution) was compared. Similarly, response to concurrent functional upper GI symptoms (postprandial pain, bloating, weight loss, vomiting, early satiety, or nausea) and dysphagia, as well as adverse effects, were evaluated in the combined group. RESULTS Mean age of 57 cases was 14.7 ± 4.9 years and 68% were female. Comorbidities included functional upper GI (UGI) symptoms (84%), dysphagia (12%), mood disorders (49%), and hypermobility spectrum disorder (37%). Unmatched cases reported 63% improvement to FC; response did not differ between the matched cohorts (70% versus 76.6%, p = 0.84). Cases showed a 56% improvement in functional UGI symptoms and 100% in dysphagia. Adverse effects were reported in 30%, abdominal cramps being most common. Four (7%) patients with a known mood disorder reported worsened mood, of which two endorsed suicidal ideation. CONCLUSION Prucalopride efficaciously treated concurrent UGI symptoms and dysphagia in constipated pediatric patients and was overall well tolerated. Preexisting mood disorders seemed to worsen in a small subset of cases.
Collapse
Affiliation(s)
- Alejandro Velez
- Gastroenterology, Hepatology and Nutrition, Pediatric Gastroenterology, Cincinnati Children's Hospital Medical Center, Suite T8.382, 3333 Burnet Ave, Cincinnati, OH, 45229, USA
| | - Ajay Kaul
- Gastroenterology, Hepatology and Nutrition, Pediatric Gastroenterology, Cincinnati Children's Hospital Medical Center, Suite T8.382, 3333 Burnet Ave, Cincinnati, OH, 45229, USA
- University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Khalil I El-Chammas
- Gastroenterology, Hepatology and Nutrition, Pediatric Gastroenterology, Cincinnati Children's Hospital Medical Center, Suite T8.382, 3333 Burnet Ave, Cincinnati, OH, 45229, USA
- University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Lesley Knowlton
- Gastroenterology, Hepatology and Nutrition, Pediatric Gastroenterology, Cincinnati Children's Hospital Medical Center, Suite T8.382, 3333 Burnet Ave, Cincinnati, OH, 45229, USA
| | - Erick Madis
- Gastroenterology, Hepatology and Nutrition, Pediatric Gastroenterology, Cincinnati Children's Hospital Medical Center, Suite T8.382, 3333 Burnet Ave, Cincinnati, OH, 45229, USA
| | - Rashmi Sahay
- Biostatistics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Lin Fei
- Biostatistics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Sarah Stiehl
- Division of Pharmacy, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Neha R Santucci
- Gastroenterology, Hepatology and Nutrition, Pediatric Gastroenterology, Cincinnati Children's Hospital Medical Center, Suite T8.382, 3333 Burnet Ave, Cincinnati, OH, 45229, USA.
- University of Cincinnati College of Medicine, Cincinnati, OH, USA.
| |
Collapse
|
8
|
Leite G, de Freitas Germano J, Morales W, Weitsman S, Barlow GM, Parodi G, Pimentel ML, Villanueva-Millan MJ, Sanchez M, Ayyad S, Rezaie A, Mathur R, Pimentel M. Cytolethal distending toxin B inoculation leads to distinct gut microtypes and IBS-D-like microRNA-mediated gene expression changes in a rodent model. Gut Microbes 2024; 16:2293170. [PMID: 38108386 PMCID: PMC10730147 DOI: 10.1080/19490976.2023.2293170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 12/06/2023] [Indexed: 12/19/2023] Open
Abstract
Diarrhea-predominant irritable bowel syndrome (IBS-D), associated with increased intestinal permeability, inflammation, and small intestinal bacterial overgrowth, can be triggered by acute gastroenteritis. Cytolethal distending toxin B (CdtB) is produced by gastroenteritis-causing pathogens and may underlie IBS-D development, through molecular mimicry with vinculin. Here, we examine the effects of exposure to CdtB alone on gut microbiome composition, host intestinal gene expression, and IBS-D-like phenotypes in a rat model. CdtB-inoculated rats exhibited increased anti-CdtB levels, which correlated with increased stool wet weights, pro-inflammatory cytokines (TNFα, IL2) and predicted microbial metabolic pathways including inflammatory responses, TNF responses, and diarrhea. Three distinct ileal microbiome profiles (microtypes) were identified in CdtB-inoculated rats. The first microtype (most like controls) had altered relative abundance (RA) of genera Bifidobacterium, Lactococcus, and Rothia. The second had lower microbial diversity, higher Escherichia-Shigella RA, higher absolute E. coli abundance, and altered host ileal tissue expression of immune-response and TNF-response genes compared to controls. The third microtype had higher microbial diversity, higher RA of hydrogen sulfide (H2S)-producer Desulfovibrio, and increased expression of H2S-associated pain/serotonin response genes. All CdtB-inoculated rats exhibited decreased ileal expression of cell junction component mRNAs, including vinculin-associated proteins. Significantly, cluster-specific microRNA-mRNA interactions controlling intestinal permeability, visceral hypersensitivity/pain, and gastrointestinal motility genes, including several previously associated with IBS were seen. These findings demonstrate that exposure to CdtB toxin alone results in IBS-like phenotypes including inflammation and diarrhea-like stool, decreased expression of intestinal barrier components, and altered ileal microtypes that influenced changes in microRNA-modulated gene expression and predicted metabolic pathways consistent with specific IBS-D symptoms.
Collapse
Affiliation(s)
- Gabriela Leite
- Medically Associated Science and Technology (MAST) Program, Cedars-Sinai, Los Angeles, CA, USA
| | | | - Walter Morales
- Medically Associated Science and Technology (MAST) Program, Cedars-Sinai, Los Angeles, CA, USA
| | - Stacy Weitsman
- Medically Associated Science and Technology (MAST) Program, Cedars-Sinai, Los Angeles, CA, USA
| | - Gillian M Barlow
- Medically Associated Science and Technology (MAST) Program, Cedars-Sinai, Los Angeles, CA, USA
| | - Gonzalo Parodi
- Medically Associated Science and Technology (MAST) Program, Cedars-Sinai, Los Angeles, CA, USA
| | - Maya L Pimentel
- Medically Associated Science and Technology (MAST) Program, Cedars-Sinai, Los Angeles, CA, USA
| | | | - Maritza Sanchez
- Medically Associated Science and Technology (MAST) Program, Cedars-Sinai, Los Angeles, CA, USA
| | - Sarah Ayyad
- Medically Associated Science and Technology (MAST) Program, Cedars-Sinai, Los Angeles, CA, USA
| | - Ali Rezaie
- Medically Associated Science and Technology (MAST) Program, Cedars-Sinai, Los Angeles, CA, USA
- Karsh Division of Gastroenterology and Hepatology, Department of Medicine, Cedars-Sinai, Los Angeles, CA, USA
| | - Ruchi Mathur
- Medically Associated Science and Technology (MAST) Program, Cedars-Sinai, Los Angeles, CA, USA
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Cedars-Sinai, Los Angeles, CA, USA
| | - Mark Pimentel
- Medically Associated Science and Technology (MAST) Program, Cedars-Sinai, Los Angeles, CA, USA
- Karsh Division of Gastroenterology and Hepatology, Department of Medicine, Cedars-Sinai, Los Angeles, CA, USA
| |
Collapse
|
9
|
Giatti S, Diviccaro S, Cioffi L, Cosimo Melcangi R. Post-Finasteride Syndrome And Post-Ssri Sexual Dysfunction: Two Clinical Conditions Apparently Distant, But Very Close. Front Neuroendocrinol 2024; 72:101114. [PMID: 37993021 DOI: 10.1016/j.yfrne.2023.101114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 10/31/2023] [Accepted: 11/19/2023] [Indexed: 11/24/2023]
Abstract
Post-finasteride syndrome and post-SSRI sexual dysfunction, are two poorly explored clinical conditions in which men treated for androgenetic alopecia with finasteride or for depression with SSRI antidepressants show persistent side effects despite drug suspension (e.g., sexual dysfunction, psychological complaints, sleep disorders). Because of some similarities in the symptoms, common pathological mechanisms are proposed here. Indeed, as discussed, clinical studies and preclinical data obtained so far suggest an important role for brain modulators (i.e., neuroactive steroids), neurotransmitters (i.e., serotonin, and cathecolamines), and gut microbiota in the context of the gut-brain axis. In particular, the observed interconnections of these signals in these two clinical conditions may suggest similar etiopathogenetic mechanisms, such as the involvement of the enzyme converting norepinephrine into epinephrine (i.e., phenylethanolamine N-methyltransferase). However, despite the current efforts, more work is still needed to advance the understanding of these clinical conditions in terms of diagnostic markers and therapeutic strategies.
Collapse
Affiliation(s)
- Silvia Giatti
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milano, Italy
| | - Silvia Diviccaro
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milano, Italy
| | - Lucia Cioffi
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milano, Italy
| | - Roberto Cosimo Melcangi
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milano, Italy.
| |
Collapse
|
10
|
Cao X, Zhao H, Liang Z, Cao Y, Min M. Long-term administration of probiotics prevents gastrointestinal mucosal barrier dysfunction in septic mice partly by upregulating the 5-HT degradation pathway. Open Med (Wars) 2023; 18:20230869. [PMID: 38152336 PMCID: PMC10751891 DOI: 10.1515/med-2023-0869] [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: 04/26/2023] [Revised: 09/22/2023] [Accepted: 11/12/2023] [Indexed: 12/29/2023] Open
Abstract
Sepsis can impair gastrointestinal (GI) barrier integrity. Oral probiotics (PT) can maintain the balance of GI microflora and improve GI function. 5-Hydroxytryptamine (5-HT) is a key promoter of GI injury caused by sepsis. However, the mechanism by which PT attenuates sepsis by regulating 5-HT is not fully understood. In this study, C57BL6 mice were intragastric administrated with normal saline (NC) or PT once a day for 4 weeks before cecal ligation and puncture (CLP). Compared with NC-CLP mice, PT-CLP mice had lower clinical score, higher body temperature. The survival rate of PT-CLP mice was significantly improved. The levels of inflammatory cytokines and 5-HT were obviously decreased in PT-CLP mice, and GI peristalsis and barrier function were enhanced. Moreover, sepsis downregulated the expression of tight junction proteins, while PT pretreatment could maintain them at the level of sham operation group. Furthermore, PT pretreatment increased the expression of serotonin transporter and monoamine oxidase A. PT administration could inhibit NF-κB activity, and activate ERK activity. In conclusion, long-term supplementation of PT before CLP can prevent sepsis-induced GI mucosal barrier dysfunction in mice, which may be partially mediated by upregulating the 5-HT degradation pathway via activating ERK signaling.
Collapse
Affiliation(s)
- Xiaopeng Cao
- Department of Gastroenterology, The First Medical Center of PLA General Hospital, Beijing, 100048China
| | - Hui Zhao
- Department of Gastroenterology, The First Medical Center of PLA General Hospital, Beijing, 100048China
| | - Zhimin Liang
- Department of Gastroenterology, The First Medical Center of PLA General Hospital, Beijing, 100048China
| | - Yi Cao
- Department of Global Health, Milken Institute School of Public Health, The George Washington University, WashingtonDC, 20052USA
| | - Min Min
- Department of Gastroenterology, The Fifth Medical Center of PLA General Hospital, No. 51 Fucheng Road, Haidian District, Beijing, 100039China
| |
Collapse
|
11
|
Zhang T, Liu W, Lu H, Cheng T, Wang L, Wang G, Zhang H, Chen W. Lactic acid bacteria in relieving constipation: mechanism, clinical application, challenge, and opportunity. Crit Rev Food Sci Nutr 2023:1-24. [PMID: 37971876 DOI: 10.1080/10408398.2023.2278155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Constipation is a prevalent gastrointestinal symptom that can considerably affect a patients' quality of life. Although several drugs have been used to treat constipation, they are associated with high costs, side effects, and low universality. Therefore, alternative intervention strategies are urgently needed. Traditional lactic acid bacteria (LAB), such as Bifidobacterium and Lactobacillus, play a vital role in regulating intestinal microecology and have demonstrated favorable effects in constipation; however, a comprehensive review of their constipation relief mechanisms is limited. This review summarizes the pathogenesis of constipation and the relationship between intestinal motility and gut microbiota, elucidates the possible mechanism by which LAB alleviates of constipation through a systematic summary of animal and clinical research, and highlights the challenges and applications of LAB in the treatment of constipation. Our review can improve our understanding of constipation, and advance targeted microecological therapeutic agents, such as LAB.
Collapse
Affiliation(s)
- Tong Zhang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Wenxu Liu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Huimin Lu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Ting Cheng
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Linlin Wang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
- (Yangzhou) Institute of Food Biotechnology, Jiangnan University, Yangzhou, China
| | - Gang Wang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
- (Yangzhou) Institute of Food Biotechnology, Jiangnan University, Yangzhou, China
| | - Hao Zhang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
- (Yangzhou) Institute of Food Biotechnology, Jiangnan University, Yangzhou, China
| | - Wei Chen
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
- National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, China
| |
Collapse
|
12
|
Krishnamurthy HK, Pereira M, Bosco J, George J, Jayaraman V, Krishna K, Wang T, Bei K, Rajasekaran JJ. Gut commensals and their metabolites in health and disease. Front Microbiol 2023; 14:1244293. [PMID: 38029089 PMCID: PMC10666787 DOI: 10.3389/fmicb.2023.1244293] [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: 06/22/2023] [Accepted: 10/16/2023] [Indexed: 12/01/2023] Open
Abstract
Purpose of review This review comprehensively discusses the role of the gut microbiome and its metabolites in health and disease and sheds light on the importance of a holistic approach in assessing the gut. Recent findings The gut microbiome consisting of the bacteriome, mycobiome, archaeome, and virome has a profound effect on human health. Gut dysbiosis which is characterized by perturbations in the microbial population not only results in gastrointestinal (GI) symptoms or conditions but can also give rise to extra-GI manifestations. Gut microorganisms also produce metabolites (short-chain fatty acids, trimethylamine, hydrogen sulfide, methane, and so on) that are important for several interkingdom microbial interactions and functions. They also participate in various host metabolic processes. An alteration in the microbial species can affect their respective metabolite concentrations which can have serious health implications. Effective assessment of the gut microbiome and its metabolites is crucial as it can provide insights into one's overall health. Summary Emerging evidence highlights the role of the gut microbiome and its metabolites in health and disease. As it is implicated in GI as well as extra-GI symptoms, the gut microbiome plays a crucial role in the overall well-being of the host. Effective assessment of the gut microbiome may provide insights into one's health status leading to more holistic care.
Collapse
Affiliation(s)
| | | | - Jophi Bosco
- Vibrant America LLC., San Carlos, CA, United States
| | | | | | | | - Tianhao Wang
- Vibrant Sciences LLC., San Carlos, CA, United States
| | - Kang Bei
- Vibrant Sciences LLC., San Carlos, CA, United States
| | | |
Collapse
|
13
|
Wang Y, Huang Y, Zhao M, Yang L, Su K, Wu H, Wang Y, Chang Q, Liu W. Zuojin pill improves chronic unpredictable stress-induced depression-like behavior and gastrointestinal dysfunction in mice via the theTPH2/5-HT pathway. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2023; 120:155067. [PMID: 37716030 DOI: 10.1016/j.phymed.2023.155067] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 08/01/2023] [Accepted: 09/01/2023] [Indexed: 09/18/2023]
Abstract
BACKGROUND The complex bidirectional communication between the gastrointestinal tract and the brain is associated with mental disorders such as depression; serotonin, as a crucial neurotransmitter in the communication system between the central nervous system and the gastrointestinal tract, has effects on regulating gastrointestinal motility and sensation and improving psychosomatic status. Zuojin pill is used as a traditional Chinese medicine formula for the treatment of gastrointestinal disorders. This study explored the effects of Zuojin pill on the improvement of depression and gastrointestinal function in CUMS mice via TPH2 and its mechanism. PURPOSE The aim of this study was to investigate whether Zuojin pill could improve depression and concomitant gastrointestinal dysfunction, and to reveal whether Zuojin pill could work through the regulation of the tryptophan hydroxylase 2 (TPH2) pathway. METHODS The CUMS model was established to observe the effects of Zuojin pill on depression-like behavior and gastrointestinal function in mice. Nissler staining and HE staining were used to observe the structure of hippocampal neurons and intestinal mucosa respectively. 5-HT levels in serum, hippocampus, and intestinal tissues were measured by ELISA, and TPH2 expression in hippocampus and intestinal nerves was observed by WB and immunofluorescence. In order to investigate the protective effect and mechanism of Zuojin pill on PC12 cells, CORT used an in vitro model to produce PC12 cell damage. RESULTS Our study showed that Zuojin pill ameliorated depression-like behavior and gastrointestinal dysfunction in CUMS mice, elevated BDNF, 5-HT, and TPH2 expression in the hippocampus, and restored the ratio of dopaminergic and GABAergic neurons between intestinal muscles. In vitro experiments showed that Zuojin pill exerted a protective effect on neurons by regulating TPH2 ubiquitination and thus inhibiting CORT-induced apoptosis of PC12 cells. CONCLUSION Zuojin pill improves chronic unpredictable stress-induced depression-like behavior and gastrointestinal dysfunction in mice via the TPH2/5-HT pathway. Therefore, TPH2 may be a potential therapeutic target for depression with gastrointestinal dysfunction.
Collapse
Affiliation(s)
- Yan Wang
- Nanjing University of Chinese Medicine, Nanjing 210023, China; Department of Gastroenterology, Nanjing Integrated Traditional Chinese and Western Medicine Hospital, Nanjing 210014, China
| | - Yuzhen Huang
- Nanjing University of Chinese Medicine, Nanjing 210023, China; Department of Gastroenterology, Nanjing Integrated Traditional Chinese and Western Medicine Hospital, Nanjing 210014, China
| | - Min Zhao
- Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Lu Yang
- Nanjing University of Chinese Medicine, Nanjing 210023, China; Department of Gastroenterology, Nanjing Integrated Traditional Chinese and Western Medicine Hospital, Nanjing 210014, China
| | - Kunhan Su
- Department of Gastroenterology, Nanjing Integrated Traditional Chinese and Western Medicine Hospital, Nanjing 210014, China
| | - Hao Wu
- Department of Gastroenterology, Nanjing Integrated Traditional Chinese and Western Medicine Hospital, Nanjing 210014, China
| | - Yuting Wang
- Nanjing University of Chinese Medicine, Nanjing 210023, China; Department of Gastroenterology, Nanjing Integrated Traditional Chinese and Western Medicine Hospital, Nanjing 210014, China
| | - Qing Chang
- Nanjing University of Chinese Medicine, Nanjing 210023, China; Department of Gastroenterology, Nanjing Integrated Traditional Chinese and Western Medicine Hospital, Nanjing 210014, China
| | - Wanli Liu
- Nanjing University of Chinese Medicine, Nanjing 210023, China; Department of Gastroenterology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China.
| |
Collapse
|
14
|
Hung TH, Wang CY, Lee HF. Update in diagnosis and management of irritable bowel syndrome. Tzu Chi Med J 2023; 35:306-311. [PMID: 38035060 PMCID: PMC10683518 DOI: 10.4103/tcmj.tcmj_104_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 06/13/2023] [Accepted: 08/09/2023] [Indexed: 12/02/2023] Open
Abstract
Irritable bowel syndrome (IBS) is a functional gastrointestinal disorder characterized by a lack of structural or biochemical abnormalities. The current diagnosis of IBS is based on the Rome IV criteria, and it is recommended to approach IBS patients using a multidimensional clinical profile (MDCP). The pathophysiology of IBS is multifactorial and involves motility disorders, genetic factors, immune responses, visceral hypersensitivity, brain-gut dysregulation, and altered intestinal microbiota. The management of IBS includes both nonpharmacologic and pharmacologic therapies. Nonpharmacologic therapy options include physical activity, low fermentable oligosaccharides, disaccharides, monosaccharides, and polyol diet, as well as cognitive behavioral therapy. Pharmacologic therapy options include probiotics, antidepressants, antispasmodics, and new agents. In clinical practice, a multidisciplinary strategy, including nonpharmacologic or/and pharmacologic treatment for IBS, is emphasized. Therefore, clinicians should carefully consider the underlying pathophysiology before selecting an appropriate therapeutic option for the treatment of IBS. In other words, individualized treatment plans are necessary for managing IBS.
Collapse
Affiliation(s)
- Tsung-Hsing Hung
- Division of Gastroenterology, Department of Medicine, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Chiayi, Taiwan
- School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Chih-Ying Wang
- Department of Medical Research, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Chiayi, Taiwan
| | - Hsing-Feng Lee
- Division of Gastroenterology, Department of Medicine, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Chiayi, Taiwan
- School of Medicine, Tzu Chi University, Hualien, Taiwan
| |
Collapse
|
15
|
Omotosho AO, Tajudeen YA, Oladipo HJ, Yusuff SI, AbdulKadir M, Muili AO, Egbewande OM, Yusuf RO, Faniran ZO, Afolabi AO, El‐Sherbini MS. Parkinson's disease: Are gut microbes involved? Brain Behav 2023; 13:e3130. [PMID: 37340511 PMCID: PMC10454343 DOI: 10.1002/brb3.3130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 06/05/2023] [Accepted: 06/05/2023] [Indexed: 06/22/2023] Open
Abstract
INTRODUCTION Parkinson's disease (PD) is a neurodegenerative disorder that affects more than 10 million individuals worldwide. It is characterized by motor and sensory deficits. Research studies have increasingly demonstrated a correlation between Parkinson's disease and alternations in the composition of the gut microbiota in affected patients. Also, the significant role of prebiotics and probiotics in gastrointestinal and neurological conditions is imperative to understand their relation to Parkinson's disease. METHOD To explore the scientific interaction of the gut-microbiota-brain axis and its association with Parkinson's disease, a comprehensive narrative review of the relevant literature was conducted. Articles were retrieved systematically from reputable sources, including PubMed, Science Direct, World Health Organization (WHO), and Advanced Google Scholar. Key search terms included are "Parkinson's Disease", "Gut Microbiome", "Braak's Theory", "Neurological Disorders", and "Gut-brain axis". Articles included in our review are published in English and they provide detailed information on the relationship between Parkinson's disease and gut microbiota RESULTS: This review highlights the impact of gut microbiota composition and associated factors on the progression of Parkinson's disease. Evidence-based studies highlighting the existing evidence of the relationship between Parkinson's disease and alteration in gut microbiota are discussed. Consequently, the potential mechanisms by which the gut microbiota may affect the composition of the gut microbiota were revealed, with a particular emphasis on the role of the gut-brain axis in this interplay. CONCLUSION Understanding the complex interplay between gut microbiota and Parkinson's disease is a potential implication for the development of novel therapeutics against Parkinson's disease. Following the existing relationship demonstrated by different evidence-based studies on Parkinson's disease and gut microbiota, our review concludes by providing recommendations and suggestions for future research studies with a particular emphasis on the impact of the microbiota-brain axis on Parkinson's disease.
Collapse
Affiliation(s)
- Abass Olawale Omotosho
- Department of Microbiology, Faculty of Pure and Applied SciencesKwara State University, Malete‐IlorinIlorinNigeria
| | - Yusuf Amuda Tajudeen
- Department of Microbiology, Faculty of Life SciencesUniversity of IlorinIlorinNigeria
- Faculty of Pharmaceutical SciencesUniversity of IlorinIlorinNigeria
| | - Habeebullah Jayeola Oladipo
- Department of Microbiology, Faculty of Life SciencesUniversity of IlorinIlorinNigeria
- Department of Epidemiology and Medical Statistics, Faculty of Public Health, College of MedicineUniversity of IbadanIbadanNigeria
| | - Sodiq Inaolaji Yusuff
- Department of Medicine, Faculty of Clinical SciencesObafemi Awolowo UniversityIfeNigeria
| | - Muritala AbdulKadir
- Department of Epidemiology and Medical Statistics, Faculty of Public Health, College of MedicineUniversity of IbadanIbadanNigeria
| | | | - Oluwaseyi Muyiwa Egbewande
- Department of Epidemiology and Medical Statistics, Faculty of Public Health, College of MedicineUniversity of IbadanIbadanNigeria
| | - Rashidat Onyinoyi Yusuf
- Department of Epidemiology and Medical Statistics, Faculty of Public Health, College of MedicineUniversity of IbadanIbadanNigeria
| | | | - Abdullateef Opeyemi Afolabi
- Faculty of Biomedical Sciences, Department of Microbiology and ImmunologyKampala International UniversityBushenyiUganda
| | - Mona Said El‐Sherbini
- Narrative Medicine and Planetary Health, Integrated Program of Kasr Al-Ainy (IPKA), Faculty of MedicineCairo UniversityCairoEgypt
- Invited Facultythe Nova Institute for HealthBaltimoreMDUSA
- Department of Medical Parasitology, Faculty of MedicineCairo UniversityCairoEgypt
| |
Collapse
|
16
|
Rosendo-Silva D, Viana S, Carvalho E, Reis F, Matafome P. Are gut dysbiosis, barrier disruption, and endotoxemia related to adipose tissue dysfunction in metabolic disorders? Overview of the mechanisms involved. Intern Emerg Med 2023; 18:1287-1302. [PMID: 37014495 PMCID: PMC10412677 DOI: 10.1007/s11739-023-03262-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 03/11/2023] [Indexed: 04/05/2023]
Abstract
Recently, compelling evidence points to dysbiosis and disruption of the epithelial intestinal barrier as major players in the pathophysiology of metabolic disorders, such as obesity. Upon the intestinal barrier disruption, components from bacterial metabolism and bacteria itself can reach peripheral tissues through circulation. This has been associated with the low-grade inflammation that characterizes obesity and other metabolic diseases. While circulating bacterial DNA has been postulated as a common feature of obesity and even type 2 diabetes, almost no focus has been given to the existence and effects of bacteria in peripheral tissues, namely the adipose tissue. As a symbiont population, it is expected that gut microbiota modulate the immunometabolism of the host, thus influencing energy balance mechanisms and inflammation. Gut inflammatory signals cause direct deleterious inflammatory responses in adipose tissue and may also affect key gut neuroendocrine mechanisms governing nutrient sensing and energy balance, like incretins and ghrelin, which play a role in the gut-brain-adipose tissue axis. Thus, it is of major importance to disclose how gut microbiota and derived signals modulate neuroendocrine and inflammatory pathways, which contribute to the dysfunction of adipose tissue and to the metabolic sequelae of obesity and related disorders. This review summarizes the current knowledge regarding these topics and identifies new perspectives in this field of research, highlighting new pathways toward the reduction of the inflammatory burden of metabolic diseases.
Collapse
Affiliation(s)
- Daniela Rosendo-Silva
- Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research (iCBR), University of Coimbra, Coimbra, Portugal
- Institute of Physiology, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal
| | - Sofia Viana
- Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research (iCBR), University of Coimbra, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal
- Institute of Pharmacology and Experimental Therapeutics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Instituto Politécnico de Coimbra, Coimbra Health School (ESTeSC), Coimbra, Portugal
| | - Eugénia Carvalho
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
- Center of Neuroscience and Cell Biology (CNC), University of Coimbra, Coimbra, Portugal
- Institute for Interdisciplinary Research, University of Coimbra, Coimbra, Portugal
| | - Flávio Reis
- Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research (iCBR), University of Coimbra, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal
- Institute of Pharmacology and Experimental Therapeutics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Paulo Matafome
- Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research (iCBR), University of Coimbra, Coimbra, Portugal.
- Institute of Physiology, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal.
- Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal.
- Instituto Politécnico de Coimbra, Coimbra Health School (ESTeSC), Coimbra, Portugal.
- Faculty of Medicine, Pole III of University of Coimbra, Subunit 1, 1st floor, Azinhaga de Santa Comba, Celas, 3000-354, Coimbra, Portugal.
| |
Collapse
|
17
|
Li H, Xiao HY, Yuan LP, Yan B, Pan Y, Tian PP, Zhang WJ. Protective effect of L-pipecolic acid on constipation in C57BL/6 mice based on gut microbiome and serum metabolomic. BMC Microbiol 2023; 23:144. [PMID: 37210496 DOI: 10.1186/s12866-023-02880-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Accepted: 05/04/2023] [Indexed: 05/22/2023] Open
Abstract
BACKGROUND Functional constipation (FC) in children affects their growth, development and quality of life. L-pipecolic acid (L-PA) was decreased in FC children based on gut microbiome and serum metabolomic. In this study, loperamide-induced constipation in mice was used to evaluate the effects of L-PA on constipated mice. METHOD 26 FC and 28 healthy children were recruited. Stool samples and serum samples were subjected to 16S rDNA sequencing and ultra-performance liquid chromatography/quadrupole time of flight (UPLC-Q/TOF-MS) approach, respectively. A loperamide-induced mouse constipation model was developed, and all mice were randomly divided into control (Con), loperamide (Lop) and L-PA (Lop + L-PA) treatment groups (6 mice per group). The mice in the Lop + L-PA group were given L-PA (250 mg/kg, once a day) and loperamide; the Lop group was given loperamide for 1 week, and the Con group was given saline. The fecal parameters and intestinal motility of mice in each group were detected. serum 5-HT levels and colon 5-HT expression were detected by ELISA and immunohistochemistry, respectively; qRT-PCR was used to detect the expression of AQP3 and 5-HT4R mRNA in each group. RESULTS 45 differential metabolites and 18 significantly different microbiota were found in FC children. The α and β diversity of gut microbiota in FC children was significantly reduced. Importantly, serum L-PA was significantly reduced in FC children. The KEGG pathway enrichment were mainly enriched in fatty acid biosynthesis, lysine degradation, and choline metabolism. L-PA was negatively associated with Ochrobactrum, and N6, N6, N6-trimethyl-l-lysine was positively associated with Phascolarcrobacterium. In addition, L-PA improved the fecal water content, intestinal transit rate, and increased the serum 5-HT levels in constipated mice. Moreover, L-PA increased the expression of 5-HT4R, reduced AQP3, and regulated constipation-associated genes. CONCLUSIONS Gut microbiota and serum metabolites were significantly altered in children with FC. The abundance of Phascolarctobacterium and Ochrobactrum and serum L-PA content were decreased in FC children. L-PA was found to alleviate the fecal water content, increase intestinal transit rate and the first black stool defecation time. L-PA improved constipation by increasing 5-HT and 5-HT4R expression while down-regulating AQP3 expression.
Collapse
Affiliation(s)
- Huan Li
- Department of Pediatrics, First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China
- Fuyang Hospital of Anhui Medical University, Fuyang, 236000, Anhui, China
| | - Hong-Yun Xiao
- Department of Pediatrics, First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China
- Fuyang Hospital of Anhui Medical University, Fuyang, 236000, Anhui, China
| | - Li-Ping Yuan
- Department of Pediatrics, First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China.
| | - Bo Yan
- Department of Technology, Anhui Medical College, Hefei, 230022, Anhui, China
| | - Ying Pan
- Department of Technology, Anhui Medical College, Hefei, 230022, Anhui, China
| | - Ping-Ping Tian
- Department of Technology, Anhui Medical College, Hefei, 230022, Anhui, China
| | - Wei-Jie Zhang
- Department of Technology, Anhui Medical College, Hefei, 230022, Anhui, China
| |
Collapse
|
18
|
Wang LW, Ruan H, Wang BM, Qin Y, Zhong WL. Microbiota regulation in constipation and colorectal cancer. World J Gastrointest Oncol 2023; 15:776-786. [PMID: 37275451 PMCID: PMC10237018 DOI: 10.4251/wjgo.v15.i5.776] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/23/2023] [Accepted: 04/21/2023] [Indexed: 05/12/2023] Open
Abstract
The relevance of constipation to the development and progression of colorectal cancer (CRC) is currently a controversial issue. Studies have shown that changes in the composition of the gut microbiota, a condition known as ecological imbalance, are correlated with an increasing number of common human diseases, including CRC and constipation. CRC is the second leading cause of cancer-related deaths worldwide, and constipation has been receiving widespread attention as a risk factor for CRC. Early colonoscopy screening of constipated patients, with regular follow-ups and timely intervention, can help detect early intestinal lesions and reduce the risks of developing colorectal polyps and CRC. As an important regulator of the intestinal microenvironment, the gut microbiota plays a critical role in the onset and progression of CRC. An increasing amount of evidence supports the thought that gut microbial composition and function are key determinants of CRC development and progression, with alterations inducing changes in the expression of host genes, metabolic regulation, and local and systemic immunological responses. Furthermore, constipation greatly affects the composition of the gut microbiota, which in turn influences the susceptibility to intestinal diseases such as CRC. However, the crosstalk between the gut microbiota, constipation, and CRC is still unclear.
Collapse
Affiliation(s)
- Li-Wei Wang
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Hao Ruan
- China Resources Biopharmaceutical Company Limited, Beijing 100029, China
| | - Bang-Mao Wang
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Yuan Qin
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, Zhejiang Province, China
| | - Wei-Long Zhong
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin 300052, China
| |
Collapse
|
19
|
Chojnacki C, Błońska A, Konrad P, Chojnacki M, Podogrocki M, Poplawski T. Changes in Tryptophan Metabolism on Serotonin and Kynurenine Pathways in Patients with Irritable Bowel Syndrome. Nutrients 2023; 15:nu15051262. [PMID: 36904262 PMCID: PMC10005076 DOI: 10.3390/nu15051262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 02/20/2023] [Accepted: 03/01/2023] [Indexed: 03/06/2023] Open
Abstract
(1) Background: L-tryptophan is a substrate for the synthesis of many biological compounds through the serotonin and kynurenine pathways. These compounds have a significant influence on gastrointestinal functions and mental processes. The aim of the study was to evaluate the urinary excretion of selected tryptophan metabolites in patients with constipation-predominant and diarrhoea-predominant irritable bowel syndrome (IBS-C and IBS-D, respectively), related to somatic and mental symptoms. (2) Methods: 120 people were included in the study and three groups were distinguished, with 40 individuals each, including healthy subjects (controls), patients with IBS-C and patients with IBS-D. The Gastrointestinal Symptoms Rating Scale (GSRS-IBS) was used to assess the severity of abdominal symptoms. The Hamilton Anxiety Rating Scale (HAM-A) and Hamilton Depression Rating Scale (HAM-D) were used to evaluate the mental state of patients. Using liquid chromatography tandem mass spectrometry (LC-MS/MS), L-tryptophan and the following metabolites in urine, related to the creatinine level, were measured: 5-hydroxyindoleacetic acid (5-HIAA), kynurenine (KYN), kynurenic acid (KYNA) and quinolinic acid (QA). (3) Results: In both groups of patients with IBS, changes in tryptophan metabolism were found as compared to the control group. We observed an increase in the activity of the serotonin pathway and a positive correlation between the 5-HIAA level and the GSRS score (p < 0.01) and HAM-A score (p < 0.001) in IBS-D patients. The IBS-C group was characterized by a higher concentration of kynurenines (KYN, QA) in urine. Moreover, the QA (p < 0.001) and KYNA (p < 0.05) levels were correlated with the HAM-D score among IBS-C patients. (4) Conclusions: Various changes in the tryptophan metabolism pathway can determine the differences in the clinical picture of irritable bowel syndrome. These results should be included in the nutritional and pharmacological treatment of this syndrome.
Collapse
Affiliation(s)
- Cezary Chojnacki
- Department of Clinical Nutrition and Gastroenterological Diagnostics, Medical University of Lodz, 90-647 Lodz, Poland
- Correspondence: (C.C.); (T.P.)
| | - Aleksandra Błońska
- Department of Clinical Nutrition and Gastroenterological Diagnostics, Medical University of Lodz, 90-647 Lodz, Poland
| | - Paulina Konrad
- Department of Clinical Nutrition and Gastroenterological Diagnostics, Medical University of Lodz, 90-647 Lodz, Poland
| | - Marcin Chojnacki
- Department of Clinical Nutrition and Gastroenterological Diagnostics, Medical University of Lodz, 90-647 Lodz, Poland
| | - Marcin Podogrocki
- Biohazard Prevention Centre, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland
| | - Tomasz Poplawski
- Department of Pharmaceutical Microbiology and Biochemistry, Medical University of Lodz, 92-216 Lodz, Poland
- Correspondence: (C.C.); (T.P.)
| |
Collapse
|
20
|
Understanding the Connection between Gut Homeostasis and Psychological Stress. J Nutr 2023; 153:924-939. [PMID: 36806451 DOI: 10.1016/j.tjnut.2023.01.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 12/24/2022] [Accepted: 01/17/2023] [Indexed: 02/03/2023] Open
Abstract
Long-term exposure to adverse life events that provoke acute or chronic psychological stress (hereinafter "stress") can negatively affect physical health and even increase susceptibility to psychological illnesses, such as anxiety and depression. As a part of the hypothalamic-pituitary-adrenal axis, corticotropin-releasing factor (CRF) released from the hypothalamus is primarily responsible for the stress response. Typically, CRF disrupts the gastrointestinal system and leads to gut microbiota dysbiosis, thereby increasing risk of functional gastrointestinal diseases, such as irritable bowel syndrome. Furthermore, CRF increases oxidative damage to the colon and triggers immune responses involving mast cells, neutrophils, and monocytes. CRF even affects the differentiation of intestinal stem cells (ISCs), causing enterochromaffin cells to secrete excessive amounts of 5-hydroxytryptamine (5-HT). Therefore, stress is often accompanied by damage to the intestinal epithelial barrier function, followed by increased intestinal permeability and bacterial translocation. There are multi-network interactions between the gut microbiota and stress, and gut microbiota may relieve the effects of stress on the body. Dietary intake of probiotics can provide energy for ISCs through glycolysis, thereby alleviating the disruption to homeostasis caused by stress, and it significantly bolsters the intestinal barrier, alleviates intestinal inflammation, and maintains endocrine homeostasis. Gut microbiota also directly affect the synthesis of hormones and neurotransmitters, such as CRF, 5-HT, dopamine, and norepinephrine. Moreover, the Mediterranean diet enhances the stress resistance to some extent by regulating the intestinal flora. This article reviews recent research on how stress damages the gut and microbiota, how the gut microbiota can improve gut health by modulating injury due to stress, and how the diet relieves stress injury by interfering with intestinal microflora. This review gives insight into the potential role of the gut and its microbiota in relieving the effects of stress via the gut-brain axis.
Collapse
|
21
|
Cheng F, Fan Z, Lin C, Zhu Y, He H, Dai N, Du L. Effect of altered gut microbiota on visceral hypersensitivity of postinfectious irritable bowel syndrome mice. Eur J Gastroenterol Hepatol 2022; 34:1220-1230. [PMID: 36165068 DOI: 10.1097/meg.0000000000002441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
OBJECTIVE Irritable bowel syndrome (IBS) is a common functional bowel disorder characterized with visceral hypersensitivity. Previous studies indicated gut microbiota alteration associated short-chain fatty acids (SCFAs) dysregulation is associated with IBS development. The aim of the study is to explore the potential role of microbiota dysbiosis mediated visceral hypersensitivity in postinfectious-IBS (PI-IBS) mouse model. METHODS Four-week-old NIH mice were randomly allocated into four groups: control mice, PI-IBS mice, PI-IBS mice co-housing with normal mice, and PI-IBS mice were administrated with a cocktail of antibiotics. Trichinella spiralis infection established PI-IBS mouse model. Microbiota in cecal contents and feces were analyzed by 16S rDNA sequencing. SCFAs were detected by gas chromatography. 5-hydroxytryptamine (5-HT) was evaluated by ELISA, and N-methyl-D-aspartate receptors (NMDARs) were examined by western blot. Visceral sensitivity was determined by abdominal withdrawal reflex in response to colorectal distention. RESULTS Increased SCFAs were observed in cecal contents and feces in PI-IBS mice accompanied with higher 5-HT and NMDAR subunits expressions in ileum and colon. Visceral hypersensitivity was observed in PI-IBS mice compared to control mice. When administrated with antibiotics cocktails and co-housing with normal mice, PI-IBS mice showed decreased SCFAs, 5-HT, NMDAR subunits expressions, and improved visceral hypersensitivity. CONCLUSION Gut microbiota alteration induced increased SCFAs, 5-HT and NMDAR subunits expressions were associated with visceral hypersensitivity in PI-IBS mice. The critical role of gut microbiota in improving visceral hypersensitivity was further identified by treatment of antibiotics cocktail and co-housing.
Collapse
Affiliation(s)
- Fangli Cheng
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China
| | | | | | | | | | | | | |
Collapse
|
22
|
Sikander A, Rana SV, Sinha SK, Prasad KK, Arora SK. Association of serotonin transporter promoter polymorphism (5-HTTLPR) with orocecal transit time in irritable bowel syndrome. Indian J Gastroenterol 2022; 41:610-617. [PMID: 36573962 DOI: 10.1007/s12664-022-01280-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 06/25/2022] [Indexed: 02/03/2023]
Abstract
BACKGROUND Irritable bowel syndrome (IBS) is a multifactorial disorder with altered intestinal motility, secretion, and sensation. Serotonin (5-HT) stimulates gut motility and alters serotonin signaling that may lead to both intestinal and extraintestinal symptoms in IBS. AIM The aim of this study was to examine the association of serotonin transporter gene promoter polymorphism (5-HTTLPR) in IBS with orocecal transit time (OCTT) measured by lactulose hydrogen breath test. METHOD This prospective case-control study included 151 IBS patients (mean±SD 37.4±11.6 years, median 36, range 19-68). Ninety-two patients were diarrhea-predominant IBS (D-IBS), 44 constipation-predominant IBS (C-IBS), 15 alternating diarrhea and constipation IBS (M-IBS), and 100 healthy controls (mean±SD 37.2±11.4 years, median 36, range 20-64 years). 5-HTTLPR gene polymorphism was studied by polymerase chain reaction-based method. 5-HT levels were measured by enzyme-linked immunosorbent assay (ELISA). Orocecal transit time (OCTT) was measured by a non-invasive lactulose hydrogen breath test. OCTT was also compared with respect to 5-HTTLPR genotypes in different IBS phenotypes. RESULTS Serum serotonin levels were significantly higher in overall IBS patients (152±77 ng/mL, p<0.001), D-IBS (184±76 ng/mL, p<0.001), compared to healthy controls (129±56 ng/mL). There was no difference in 5-HT levels between C-IBS (124±53 ng/mL) and controls. In the case of M-IBS, 5-HT levels were (88±49 ng/mL p<0.05) significantly lower than that of controls. OCTT was significantly shorter in D-IBS patients (95±36 min) as compared to controls (112±41 min). In contrast, C-IBS showed significantly prolonged OCTT (136±54 min). There was a significant difference in OCTT between D-IBS and C-IBS patients (p<0.001). There was no significant association found between OCTT and 5-HTTLPR. CONCLUSIONS Serum serotonin concentrations were increased in D-IBS compared to controls and C-IBS. OCTT was shorter in D-IBS and delayed in C-IBS patients. There was no association of 5-HTLPR polymorphism with OCTT.
Collapse
Affiliation(s)
- Arbab Sikander
- Department of Biochemistry, Islamiah College (Autonomous), College Road, New Town, Vaniyambadi, Tirupathur District, 635 752, India.
| | - Satya Vati Rana
- Department of Biochemistry, All India Institute of Medical Sciences, Rishikesh, 249 202, India
- Department of Gastroenterology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160 012, India
| | - Saroj Kant Sinha
- Department of Gastroenterology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160 012, India
| | - Kaushal Kishor Prasad
- Department of Gastroenterology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160 012, India
| | - Sunil K Arora
- Department of Immunopathology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160 012, India
| |
Collapse
|
23
|
Iesanu MI, Zahiu CDM, Dogaru IA, Chitimus DM, Pircalabioru GG, Voiculescu SE, Isac S, Galos F, Pavel B, O’Mahony SM, Zagrean AM. Melatonin-Microbiome Two-Sided Interaction in Dysbiosis-Associated Conditions. Antioxidants (Basel) 2022; 11:2244. [PMID: 36421432 PMCID: PMC9686962 DOI: 10.3390/antiox11112244] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 11/07/2022] [Accepted: 11/09/2022] [Indexed: 08/27/2023] Open
Abstract
Melatonin is a pineal indolamine, allegedly known as a circadian rhythm regulator, and an antioxidative and immunomodulatory molecule. In both experimental and clinical trials, melatonin has been shown to have positive effects in various pathologies, as a modulator of important biochemical pathways including inflammation, oxidative stress, cell injury, apoptosis, and energy metabolism. The gut represents one of melatonin's most abundant extra pineal sources, with a 400-times-higher concentration than the pineal gland. The importance of the gut microbial community-namely, the gut microbiota, in multiple critical functions of the organism- has been extensively studied throughout time, and its imbalance has been associated with a variety of human pathologies. Recent studies highlight a possible gut microbiota-modulating role of melatonin, with possible implications for the treatment of these pathologies. Consequently, melatonin might prove to be a valuable and versatile therapeutic agent, as it is well known to elicit positive functions on the microbiota in many dysbiosis-associated conditions, such as inflammatory bowel disease, chronodisruption-induced dysbiosis, obesity, and neuropsychiatric disorders. This review intends to lay the basis for a deeper comprehension of melatonin, gut microbiota, and host-health subtle interactions.
Collapse
Affiliation(s)
- Mara Ioana Iesanu
- Department of Functional Sciences, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania
- Department of Pediatrics, Marie Curie Emergency Children’s Hospital, 041451 Bucharest, Romania
| | - Carmen Denise Mihaela Zahiu
- Department of Functional Sciences, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania
| | - Ioana-Alexandra Dogaru
- Department of Functional Sciences, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania
| | - Diana Maria Chitimus
- Department of Functional Sciences, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania
| | - Gratiela Gradisteanu Pircalabioru
- Section Earth, Environmental and Life Sciences, Research Institute of the University of Bucharest, 050663 Bucharest, Romania
- Academy of Romanian Scientists, 54 Splaiul Independentei Street, District 5, 050094 Bucharest, Romania
| | - Suzana Elena Voiculescu
- Department of Functional Sciences, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania
| | - Sebastian Isac
- Department of Functional Sciences, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania
- Department of Anesthesiology and Intensive Care I, ‘Fundeni’ Clinical Institute, 022328 Bucharest, Romania
| | - Felicia Galos
- Department of Pediatrics, Marie Curie Emergency Children’s Hospital, 041451 Bucharest, Romania
- Department of Pediatrics, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania
| | - Bogdan Pavel
- Department of Functional Sciences, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania
| | - Siobhain M. O’Mahony
- Department of Anatomy and Neuroscience, University College Cork, T12 XF62 Cork, Ireland
- APC Microbiome Ireland, University College Cork, T12 YT20 Cork, Ireland
| | - Ana-Maria Zagrean
- Department of Functional Sciences, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania
| |
Collapse
|
24
|
Diviccaro S, Giatti S, Cioffi L, Falvo E, Herian M, Caruso D, Melcangi RC. Gut Inflammation Induced by Finasteride Withdrawal: Therapeutic Effect of Allopregnanolone in Adult Male Rats. Biomolecules 2022; 12:1567. [PMID: 36358917 PMCID: PMC9687671 DOI: 10.3390/biom12111567] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 10/21/2022] [Accepted: 10/22/2022] [Indexed: 07/29/2023] Open
Abstract
The treatment with finasteride (i.e., an inhibitor of 5α-reductase) may be associated with different side effects (i.e., depression, anxiety, cognitive impairment and sexual dysfunction) inducing the so-called post finasteride syndrome (PFS). Moreover, previous observations in PFS patients and an experimental model showed alterations in gut microbiota populations, suggesting an inflammatory environment. To confirm this hypothesis, we have explored the effect of chronic treatment with finasteride (i.e., for 20 days) and its withdrawal (i.e., for 1 month) on the levels of steroids, neurotransmitters, pro-inflammatory cytokines and gut permeability markers in the colon of adult male rat. The obtained data demonstrate that the levels of allopregnanolone (ALLO) decreased after finasteride treatment and after its withdrawal. Following the drug suspension, the decrease in ALLO levels correlates with an increase in IL-1β and TNF-α, serotonin and a decrease in dopamine. Importantly, ALLO treatment is able to counteract some of these alterations. The relation between ALLO and GABA-A receptors and/or pregnenolone (ALLO precursor) could be crucial in their mode of action. These observations provide an important background to explore further the protective effect of ALLO in the PFS experimental model and the possibility of its translation into clinical therapy.
Collapse
|
25
|
Pushkina AV, Avalueva EB, Bakulin IG, Topanova AA, Klikunova KA, Lapinskii IV, Sitkin SI. Risk factors for various clinical variants of irritable bowel syndrome. EXPERIMENTAL AND CLINICAL GASTROENTEROLOGY 2022:39-48. [DOI: 10.31146/1682-8658-ecg-201-5-39-48] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Affiliation(s)
- A. V. Pushkina
- North-Western State Medical University named after I. I. Mechnikov
| | - E. B. Avalueva
- North-Western State Medical University named after I. I. Mechnikov
| | - I. G. Bakulin
- North-Western State Medical University named after I. I. Mechnikov
| | | | | | - I. V. Lapinskii
- North-Western State Medical University named after I. I. Mechnikov
| | - S. I. Sitkin
- North-Western State Medical University named after I. I. Mechnikov; Almazov National Medical Research Centre
| |
Collapse
|
26
|
Buey B, Layunta E, Latorre E, Mesonero JE. Potential role of milk bioactive peptides on the serotonergic system and the gut-brain axis. Int Dairy J 2022. [DOI: 10.1016/j.idairyj.2022.105534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
27
|
Chen HY, Liu J, Weng DZ, Yan L, Pan CS, Sun K, Guo X, Wang D, Anwaier G, Jiao YQ, Li ZX, Han JY. Ameliorative effect and mechanism of Si-Ni-San on chronic stress-induced diarrhea-irritable bowel syndrome in rats. Front Pharmacol 2022; 13:940463. [PMID: 36003517 PMCID: PMC9393244 DOI: 10.3389/fphar.2022.940463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 07/04/2022] [Indexed: 11/13/2022] Open
Abstract
Background: Chronic stress-induced diarrhea is a common clinical condition, characterized by an abnormal bowel movement and loose stools, which lacks effective treatment in the clinic. Si-Ni-San (SNS) is a compound traditional Chinese medicine extensively used in China for stress-related diarrhea. However, the mechanism is unclear.Methods: Male Wistar rats (200 ± 20 g) were placed in a restraint cylinder and fixed horizontally for 3 h once daily for 21 consecutive days to establish a chronic restraint stress (CRS) rat model. SNS (0.6944 g/kg or 1.3888 g/kg) was given by gavage 1 h before the restraint once daily for 21 consecutive days. We examined the fecal score, dopamine β hydroxylase (DβH), and c-fos expression in locus coeruleus, norepinephrine (NE) content in ileum and plasma, expression of α1 adrenergic receptors, MLCK, MLC, and p-MLC in the colon and mesenteric arteries, contraction of isolated mesenteric arteries, The expression of subunit δ of ATP synthase (ATP5D) in intestinal tissues, ATP, ADP, and AMP content in the ileum and colon, occludin expression between ileum epithelial cells, the number of enterochromaffin cells (ECs) and mast cells (MCs) in the ileum, and 5-hydroxytryptamine (5-HT) content in the ileum and plasma.Results: After SNS treatment, the fecal score was improved. The increased expression of DβH and c-fos in locus coeruleus was inhibited. SNS suppressed the increased NE content in the ileum and plasma, down-regulated α1 adrenergic receptors in mesenteric arteries and MLCK, MLC, p-MLC in the colon and mesenteric arteries, and inhibited the contraction of mesenteric arteries. SNS also increased the ATP content in the ileum and colon, inhibited low expression of ATP5D in intestinal tissues, inhibited the decrease of ATP/ADP in the ileum and ATP/AMP in the colon, and up-regulated the occludin expression between ileum epithelial cells. In addition, SNS inhibited the increase of ECs and MCs in the ileum and the increase of 5-HT content in the ileum and plasma.Conclusion: This study demonstrated that SNS could improve CRS-induced abnormal feces in rats. This effect was related to the inhibition of CRS-induced increased expression of DβH and c-fos in the locus coeruleus, NE content in the ileum and plasma, and the contraction of isolated mesenteric arteries; inhibition of energy metabolism abnormality and decreased occludin expression; inhibition of increased ECs and MCs in the ileum, and 5-HT content in the ileum and plasma.
Collapse
Affiliation(s)
- Hui-Yu Chen
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University, Beijing, China
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China
- Academy of Integration of Chinese and Western Medicine, Peking University Health Science Center, Beijing, China
- Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing, China
- Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing, China
- State Key Laboratory of Core Technology in Innovative Chinese Medicine, Tianjin, China
- Beijing Microvascular Institute of Integration of Chinese and Western Medicine, Beijing, China
| | - Jian Liu
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University, Beijing, China
- Academy of Integration of Chinese and Western Medicine, Peking University Health Science Center, Beijing, China
- Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing, China
- Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing, China
- State Key Laboratory of Core Technology in Innovative Chinese Medicine, Tianjin, China
- Beijing Microvascular Institute of Integration of Chinese and Western Medicine, Beijing, China
- *Correspondence: Jian Liu, ; Jing-Yan Han,
| | - Ding-Zhou Weng
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University, Beijing, China
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China
- Academy of Integration of Chinese and Western Medicine, Peking University Health Science Center, Beijing, China
- Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing, China
- Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing, China
- State Key Laboratory of Core Technology in Innovative Chinese Medicine, Tianjin, China
- Beijing Microvascular Institute of Integration of Chinese and Western Medicine, Beijing, China
| | - Li Yan
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China
- Academy of Integration of Chinese and Western Medicine, Peking University Health Science Center, Beijing, China
- Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing, China
- Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing, China
- State Key Laboratory of Core Technology in Innovative Chinese Medicine, Tianjin, China
- Beijing Microvascular Institute of Integration of Chinese and Western Medicine, Beijing, China
| | - Chun-Shui Pan
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China
- Academy of Integration of Chinese and Western Medicine, Peking University Health Science Center, Beijing, China
- Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing, China
- Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing, China
- State Key Laboratory of Core Technology in Innovative Chinese Medicine, Tianjin, China
- Beijing Microvascular Institute of Integration of Chinese and Western Medicine, Beijing, China
| | - Kai Sun
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China
- Academy of Integration of Chinese and Western Medicine, Peking University Health Science Center, Beijing, China
- Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing, China
- Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing, China
- State Key Laboratory of Core Technology in Innovative Chinese Medicine, Tianjin, China
- Beijing Microvascular Institute of Integration of Chinese and Western Medicine, Beijing, China
| | - Xiao Guo
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University, Beijing, China
- Academy of Integration of Chinese and Western Medicine, Peking University Health Science Center, Beijing, China
- Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing, China
- Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing, China
- State Key Laboratory of Core Technology in Innovative Chinese Medicine, Tianjin, China
- Beijing Microvascular Institute of Integration of Chinese and Western Medicine, Beijing, China
| | - Di Wang
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University, Beijing, China
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China
- Academy of Integration of Chinese and Western Medicine, Peking University Health Science Center, Beijing, China
- Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing, China
- Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing, China
- State Key Laboratory of Core Technology in Innovative Chinese Medicine, Tianjin, China
- Beijing Microvascular Institute of Integration of Chinese and Western Medicine, Beijing, China
| | - Gulinigaer Anwaier
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University, Beijing, China
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China
- Academy of Integration of Chinese and Western Medicine, Peking University Health Science Center, Beijing, China
- Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing, China
- Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing, China
- State Key Laboratory of Core Technology in Innovative Chinese Medicine, Tianjin, China
- Beijing Microvascular Institute of Integration of Chinese and Western Medicine, Beijing, China
| | - Ying-Qian Jiao
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University, Beijing, China
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China
- Academy of Integration of Chinese and Western Medicine, Peking University Health Science Center, Beijing, China
- Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing, China
- Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing, China
- State Key Laboratory of Core Technology in Innovative Chinese Medicine, Tianjin, China
- Beijing Microvascular Institute of Integration of Chinese and Western Medicine, Beijing, China
| | - Zhi-Xin Li
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University, Beijing, China
- Academy of Integration of Chinese and Western Medicine, Peking University Health Science Center, Beijing, China
- Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing, China
- Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing, China
- State Key Laboratory of Core Technology in Innovative Chinese Medicine, Tianjin, China
- Beijing Microvascular Institute of Integration of Chinese and Western Medicine, Beijing, China
| | - Jing-Yan Han
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University, Beijing, China
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China
- Academy of Integration of Chinese and Western Medicine, Peking University Health Science Center, Beijing, China
- Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing, China
- Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing, China
- State Key Laboratory of Core Technology in Innovative Chinese Medicine, Tianjin, China
- Beijing Microvascular Institute of Integration of Chinese and Western Medicine, Beijing, China
- *Correspondence: Jian Liu, ; Jing-Yan Han,
| |
Collapse
|
28
|
Zinsser-Krys J, Kapitza C, Böhnke L, van der Keylen P, Neuhuber WL, Wörl J. Neurochemical classification of serotonin-immunoreactive neurons co-innervating motor endplates in the mouse esophagus. Anat Rec (Hoboken) 2022; 306:960-971. [PMID: 35838072 DOI: 10.1002/ar.25030] [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: 02/28/2022] [Revised: 05/11/2022] [Accepted: 06/06/2022] [Indexed: 11/08/2022]
Abstract
Serotonin immunoreactivity was previously found in myenteric neurons co-innervating motor endplates in the mouse esophagus striated muscle and an involvement in motility control was suggested. However, it is not known if other neuroactive substances are present in these neurons and to what extent they co-localize. First, vasoactive intestinal peptide (VIP) was established as a bona fide marker for putative inhibitory myenteric neurons by evaluating co-localization with neuronal nitric oxide synthase (nNOS) and neuropeptide Y (NPY). Then, co-localization of serotonin and VIP was tested in co-innervating axons on motor endplates, which were visualized with α-bungarotoxin (α-BT) by multilabel immunofluorescence. Myenteric ganglia were also surveyed for co-localization in neuronal perikarya and varicosities. nNOS, NPY, and VIP were completely co-localized in enteric co-innervating nerve terminals on motor endplates. After co-staining with VIP, we found (a) serotonin (5-HT)-positive nerve endings without VIP (44% of 5-HT-positively innervated endplates), (b) 5-HT- and VIP-positive endings without co-localization (35%), and (c) 5-HT- and VIP-positive endings with co-localization (21%). About one-fifth of nerve terminals on motor endplates containing 5-HT originate from putative inhibitory peptidegic nitrergic neurons. However, the majority represents a different population presumably subserving different functions.
Collapse
Affiliation(s)
- Jillena Zinsser-Krys
- Institute of Anatomy and Cell Biology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Christopher Kapitza
- Institute of Anatomy and Cell Biology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Lena Böhnke
- Institute of Anatomy and Cell Biology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Piet van der Keylen
- Institute of Anatomy and Cell Biology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Winfried L Neuhuber
- Institute of Anatomy and Cell Biology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Jürgen Wörl
- Institute of Anatomy and Cell Biology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| |
Collapse
|
29
|
Alexandru BA, Rat LA, Moldovan AF, Mihancea P, Mariș L. An Open-Label Trial Study of Quality-of-Life Assessment in Irritable Bowel Syndrome and Their Treatment. MEDICINA (KAUNAS, LITHUANIA) 2022; 58:medicina58060763. [PMID: 35744026 PMCID: PMC9230795 DOI: 10.3390/medicina58060763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 05/31/2022] [Accepted: 06/03/2022] [Indexed: 11/16/2022]
Abstract
Background and objectives: Irritable bowel syndrome (IBS) does not only have a complex pathophysiological evolution with central and peripheral mechanisms. This study aimed to monitor the neuropsychiatric part of IBS and its management, following the quality of life of patients with IBS. Materials and Methods: Participants numbering 145 were investigated in this study for 6 months and were divided into four groups, namely the control group with a symptomatic period of less than 6 months (n = 34), the group with irritable bowel syndrome (IBS; n = 58), IBS and neuropsychiatric treatment (n = 32), and IBS with probiotic treatment (n = 22). Clinical and paraclinical analyses as well as quality of life were monitored by domestic and international psychological questionnaires. Results: It was observed that, in patients with pro-longed symptoms, neuropsychiatric impairment occurred more frequently, and both clinical and paraclinical analyses improved significantly (p < 0.05) more so in those with complex allopathic treatment and in those with probiotic treatment. There were no significant differences between the two research groups. Conclusions: It has been shown that the neuropsychological component of IBS plays an important role in its treatment, and modern probation therapy can achieve similar results to those of neuropsychiatry. This also requires further studies to ensure the best combination in the approach to IBS.
Collapse
Affiliation(s)
- Bogdana Ariana Alexandru
- Faculty of Medicine and Pharmacy, Medicine Department, University of Oradea, 410068 Oradea, Romania; (B.A.A.); (A.F.M.)
| | - Lavinia Alina Rat
- Faculty of Medicine and Pharmacy, Doctoral School, University of Oradea, 1 December Square, 410068 Oradea, Romania; (L.A.R.); (P.M.)
| | - Andrada Florina Moldovan
- Faculty of Medicine and Pharmacy, Medicine Department, University of Oradea, 410068 Oradea, Romania; (B.A.A.); (A.F.M.)
| | - Petru Mihancea
- Faculty of Medicine and Pharmacy, Doctoral School, University of Oradea, 1 December Square, 410068 Oradea, Romania; (L.A.R.); (P.M.)
| | - Lavinia Mariș
- Faculty of Medicine and Pharmacy, Medicine Department, University of Oradea, 410068 Oradea, Romania; (B.A.A.); (A.F.M.)
- Correspondence: ; Tel.: +40-769627181
| |
Collapse
|
30
|
Electrochemical Determination of Paracetamol at Cu doped ZnO/Nanoparticle with TX-100-Surfactant MCPE : A Cyclic Voltammetric Technique. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109627] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
31
|
Exploring the multifactorial aspects of Gut Microbiome in Parkinson's Disease. Folia Microbiol (Praha) 2022; 67:693-706. [PMID: 35583791 PMCID: PMC9526693 DOI: 10.1007/s12223-022-00977-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 05/02/2022] [Indexed: 02/06/2023]
Abstract
Advanced research in health science has broadened our view in approaching and understanding the pathophysiology of diseases and has also revolutionised diagnosis and treatment. Ever since the establishment of Braak’s hypothesis in the propagation of alpha-synuclein from the distant olfactory and enteric nervous system towards the brain in Parkinson’s Disease (PD), studies have explored and revealed the involvement of altered gut microbiota in PD. This review recapitulates the gut microbiome associated with PD severity, duration, motor and non-motor symptoms, and antiparkinsonian treatment from recent literature. Gut microbial signatures in PD are potential predictors of the disease and are speculated to be used in early diagnosis and treatment. In brief, the review also emphasises on implications of the prebiotic, probiotic, faecal microbiota transplantation, and dietary interventions as alternative treatments in modulating the disease symptoms in PD.
Collapse
|
32
|
Gut microbiota drives macrophage-dependent self-renewal of intestinal stem cells via niche enteric serotonergic neurons. Cell Res 2022; 32:555-569. [PMID: 35379903 DOI: 10.1038/s41422-022-00645-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Accepted: 02/08/2022] [Indexed: 11/08/2022] Open
Abstract
Lgr5+ intestinal stem cells (ISCs) reside within specialized niches at the crypt base and harbor self-renewal and differentiation capacities. ISCs in the crypt base are sustained by their surrounding niche for precise modulation of self-renewal and differentiation. However, how intestinal cells in the crypt niche and microbiota in enteric cavity coordinately regulate ISC stemness remains unclear. Here, we show that ISCs are regulated by microbiota and niche enteric serotonergic neurons. The gut microbiota metabolite valeric acid promotes Tph2 expression in enteric serotonergic neurons via blocking the recruitment of the NuRD complex onto Tph2 promoter. 5-hydroxytryptamine (5-HT) in turn activates PGE2 production in a PGE2+ macrophage subset through its receptors HTR2A/3 A; and PGE2 via binding its receptors EP1/EP4, promotes Wnt/β-catenin signaling in ISCs to promote their self-renewal. Our findings illustrate a complex crosstalk among microbiota, intestinal nerve cells, intestinal immune cells and ISCs, revealing a new layer of ISC regulation by niche cells and microbiota.
Collapse
|
33
|
Li Y, Liu N, Ge Y, Yang Y, Ren F, Wu Z. Tryptophan and the innate intestinal immunity: Crosstalk between metabolites, host innate immune cells and microbiota. Eur J Immunol 2022; 52:856-868. [PMID: 35362153 DOI: 10.1002/eji.202149401] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 12/17/2021] [Accepted: 01/20/2022] [Indexed: 11/11/2022]
Abstract
The intestinal mucosal barrier is critical for the absorption of nutrients and the health of both humans and animals. Recent publications from clinical and experimental studies have shown the importanceof the nutrients-bacteria-host interaction for the intestinal homeostasis. Dysfunction of these interactions has been reported to be associated with metabolic disorders and development of intestinal diseases, such as the irritable bowel syndrome and inflammatory bowel diseases. Tryptophan and its metabolites, including kynurenine, kynurenic acid, and 5-hydroxytrptamine, can influence the proliferation of enterocytes, intestinal integrity and immune response, as well as intestinal microbiota, therefore regulating and contributing to the intestinal health. In this review, we highlight recent findings on the effect of tryptophan and its metabolites on the mucosal barrier and intestinal homeostasis and its regulation of innate immune response. Moreover, we present the signaling pathways related to Trp metabolism, such as mammalian target of rapamycin, aryl hydrocarbon receptor, and pregnane X receptor, that contribute to the intestinal homeostasis and discuss future perspectives on spontaneous interference in host tryptophan metabolism as potential clinical strategies of intestinal diseases. This article is protected by copyright. All rights reserved.
Collapse
Affiliation(s)
- Yunke Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing, 100193, China
| | - Ning Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing, 100193, China
| | - Yao Ge
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing, 100193, China
| | - Ying Yang
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, 100193, China
| | - Fazheng Ren
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing, 100193, China
| | - Zhenlong Wu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing, 100193, China.,State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, 100193, China
| |
Collapse
|
34
|
Gamal NG, Abd El-Salam RM, Gadelrub LN, Ahmed-Farid OA, Khayyal MT. The herbal preparation STW 5 affects serotonergic pathways in the brain and colon as well as stress parameters in experimental irritable bowel syndrome. Neurogastroenterol Motil 2022; 34:e14301. [PMID: 34817922 DOI: 10.1111/nmo.14301] [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: 07/07/2021] [Revised: 09/10/2021] [Accepted: 11/10/2021] [Indexed: 02/08/2023]
Abstract
BACKGROUND Exposure to stress has been related to disturbance in 5-hydroxytryptamine (5-HT) signaling in the brain-gut axis and is considered as a major predisposing factor for the development of irritable bowel syndrome (IBS). The present study aimed to investigate the possible involvement of 5-HT and some other stress-related parameters in the effectiveness of STW 5 against stress-induced IBS. METHODS Rats were subjected to restraint stress (RS) for 1 h/day for 14 consecutive days to induce IBS-like symptoms and were given STW 5 orally at the same time. At the end of the experiment, blood samples were withdrawn, then animals were euthanized and the brain hippocampi, cerebral cortices, as well as colons were isolated for biochemical and histopathological assessments. RESULTS RS increased the plasma corticotrophin releasing factor (CRF) with concomitant increase in hippocampal and cortical 5-HT levels, as well as mast cell inflammatory mediators, oxidative stress biomarkers, and histopathological inflammatory changes observed in rat colon. It also decreased the colonic content of 5-HT with consequent decrease in fecal pellet output (FPO). Treatment with STW 5 protected against these changes. CONCLUSION The protective effect of STW 5 against RS-induced IBS is related to its ability to normalize the induced changes in 5-HT in the brain-gut axis and counteract the stress-induced oxidative stress and inflammation.
Collapse
Affiliation(s)
- Nehal G Gamal
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Rania M Abd El-Salam
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | | | - Omar A Ahmed-Farid
- Physiology Department, National Organization for Drug Control and Research, Cairo, Egypt
| | - Mohamed T Khayyal
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| |
Collapse
|
35
|
France M, Galligan JJ, Swain GM. In vitro electrochemical measurement of serotonin release in the human jejunum mucosa using a diamond microelectrode. Analyst 2022; 147:2523-2532. [PMID: 35543208 PMCID: PMC9599047 DOI: 10.1039/d2an00487a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report herein on the use of a boron-doped diamond microelectrode (DME) to record oxidation currents in vitro associated with the release of serotonin from enterochromaffin cells in the epithelium of the human intestinal mucosa.
Collapse
Affiliation(s)
- Marion France
- Department of Chemistry, Michigan State University, East Lansing, MI 48824, USA
| | - James J. Galligan
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI 48824, USA
- Neuroscience Program, Michigan State University, East Lansing, MI 48824, USA
| | - Greg M. Swain
- Department of Chemistry, Michigan State University, East Lansing, MI 48824, USA
- Neuroscience Program, Michigan State University, East Lansing, MI 48824, USA
| |
Collapse
|
36
|
Wang JK, Yao SK. Roles of Gut Microbiota and Metabolites in Pathogenesis of Functional Constipation. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2021; 2021:5560310. [PMID: 34603471 PMCID: PMC8481049 DOI: 10.1155/2021/5560310] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 09/09/2021] [Indexed: 02/05/2023]
Abstract
Functional constipation (FC), a condition characterized by heterogeneous symptoms (infrequent bowel movements, hard stools, excessive straining, or a sense of incomplete evacuation), is prevalent over the world. It is a multifactorial disorder and can be categorized into four subgroups according to different pathological mechanisms: normal transit constipation (NTC), slow transit constipation (STC), defecatory disorders (DD), and mixed type. Recently, growing evidence from human and animals has pointed that there was a strong association between gut microbiota and FC based on the brain-gut-microbiome axis. Studies have reported that the main characteristics of gut microbiota in FC patients were the relative decrease of beneficial bacteria such as Lactobacillus and Bifidobacterium, the relative increase of potential pathogens, and the reduced species richness. Gut microbiota can modulate gut functions through the metabolites of bacterial fermentation, among which short-chain fatty acids (SCFAs), secondary bile salts (BAs), and methane occupied more important positions and could trigger the release of gut hormones from enteroendocrine cells (EECs), such as 5-hydroxytryptamine (5-HT), peptide YY (PYY), and glucagon-like peptide-1 (GLP-1). Subsequently, these gut hormones can influence gut sensation, secretion, and motility, primarily through activating specific receptors distributed on smooth muscle cells, enteric neurons, and epithelial cells. However, research findings were inconsistent and even conflicting, which may be partially due to various confounding factors. Future studies should take the associated confounders into consideration and adopt multiomics research strategies to obtain more complete conclusions and to provide reliable theoretical support for exploring new therapeutic targets.
Collapse
Affiliation(s)
- Jun-Ke Wang
- Department of Gastroenterology, Peking Union Medical College and Chinese Academy of Medical Sciences, China-Japan Friendship Hospital, Beijing 100029, China
| | - Shu-Kun Yao
- Department of Gastroenterology, China-Japan Friendship Hospital, Beijing 100029, China
| |
Collapse
|
37
|
di Michele F. Why use nutraceutical strategies for the Irritable Bowel Syndrome. Curr Med Chem 2021; 29:2075-2092. [PMID: 34533437 DOI: 10.2174/0929867328666210917115255] [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: 02/17/2021] [Revised: 07/30/2021] [Accepted: 08/11/2021] [Indexed: 11/22/2022]
Abstract
Irritable bowel syndrome (IBS) is a chronic functional bowel disorder, often stress-related, identified by many abdominal symptoms, the most important of which is the chronic visceral abdominal pain. Therefore, IBS commonly impairs the quality of life of patients, moreover it is frequently linked to depressive and anxiety symptoms. The treatment of IBS primarily focuses on symptoms relief. Unfortunately, up to now, no efficacious therapies have been found. Therefore, it would be important to develop new anti-IBS interventions. The aim of this brief review is to summarize the current evidence of nutraceutical supplementation in IBS treatment, with probiotics, prebiotics, synbiotics, butyrate, palmitoylethanolamide and colostrum. Since nutraceutics are over the counter products, the review has the purpose to better inform the medicinal chemist and the practitioner about the possible benefit mechanisms and the many advantages that these therapies offer. All of these compounds present multiple mechanisms of action, such as restoring the physiological microbiota, potentiating gastrointestinal barrier's function, immunomodulatory, anti-inflammatory and antinociceptive activities. From the literature data it results that these compounds are not only capable to improve IBS symptomatology, but mainly display an optimal safety and tolerability profile. Although extensive studies must be carried out to reinforce the evidences from the so far limited clinical trials, the supplementation with these compounds may be useful considering the warnings of prescription medicines for special populations of patients, such as elders, youngsters, or patients who need a combination therapy. Finally, the nutraceutical approach may improve adherence to treatment, given its better acceptance by the patients compared to pharmacological therapy.
Collapse
Affiliation(s)
- Flavia di Michele
- Dept Systems Medicine, Policlinico Tor Vergata (PTV) Foundation, Rome, Italy
| |
Collapse
|
38
|
Edinoff AN, Akuly HA, Hanna TA, Ochoa CO, Patti SJ, Ghaffar YA, Kaye AD, Viswanath O, Urits I, Boyer AG, Cornett EM, Kaye AM. Selective Serotonin Reuptake Inhibitors and Adverse Effects: A Narrative Review. Neurol Int 2021; 13:387-401. [PMID: 34449705 PMCID: PMC8395812 DOI: 10.3390/neurolint13030038] [Citation(s) in RCA: 84] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 06/22/2021] [Accepted: 07/05/2021] [Indexed: 12/27/2022] Open
Abstract
Depression is the most prevalent psychiatric disorder in the world, affecting 4.4% of the global population. Despite an array of treatment modalities, depressive disorders remain difficult to manage due to many factors. Beginning with the introduction of fluoxetine to the United States in 1988, selective serotonin reuptake inhibitors (SSRIs) quickly became a mainstay of treatment for a variety of psychiatric disorders. The primary mechanism of action of SSRIs is to inhibit presynaptic reuptake of serotonin at the serotonin transporter, subsequently increasing serotonin at the postsynaptic membrane in the serotonergic synapse. The six major SSRIs that are marketed in the USA today, fluoxetine, citalopram, escitalopram, paroxetine, sertraline, and fluvoxamine, are a group of structurally unrelated molecules that share a similar mechanism of action. While their primary mechanism of action is similar, each SSRI has unique pharmacokinetics, pharmacodynamics, and side effect profile. One of the more controversial adverse effects of SSRIs is the black box warning for increased risk of suicidality in children and young adults aged 18–24. There is a lack of understanding of the complexities and interactions between SSRIs in the developing brain of a young person with depression. Adults, who do not have certain risk factors, which could be confounding factors, do not seem to carry this increased risk of suicidality. Ultimately, when prescribing SSRIs to any patient, a risk–benefit analysis must factor in the potential treatment effects, adverse effects, and dangers of the illness to be treated. The aim of this review is to educate clinicians on potential adverse effects of SSRIs.
Collapse
Affiliation(s)
- Amber N. Edinoff
- Department of Psychiatry and Behavioral Medicine, Louisiana State University Health Science Center Shreveport, Shreveport, LA 71103, USA; (H.A.A.); (T.A.H.)
- Correspondence: ; Tel.: +1-(318)-675-8969
| | - Haseeb A. Akuly
- Department of Psychiatry and Behavioral Medicine, Louisiana State University Health Science Center Shreveport, Shreveport, LA 71103, USA; (H.A.A.); (T.A.H.)
| | - Tony A. Hanna
- Department of Psychiatry and Behavioral Medicine, Louisiana State University Health Science Center Shreveport, Shreveport, LA 71103, USA; (H.A.A.); (T.A.H.)
| | - Carolina O. Ochoa
- School of Medicine, Louisiana State University Health Shreveport, Shreveport, LA 71103, USA; (C.O.O.); (S.J.P.); (Y.A.G.)
| | - Shelby J. Patti
- School of Medicine, Louisiana State University Health Shreveport, Shreveport, LA 71103, USA; (C.O.O.); (S.J.P.); (Y.A.G.)
| | - Yahya A. Ghaffar
- School of Medicine, Louisiana State University Health Shreveport, Shreveport, LA 71103, USA; (C.O.O.); (S.J.P.); (Y.A.G.)
| | - Alan D. Kaye
- Department of Anesthesiology, Louisiana State University Health Shreveport, Shreveport, LA 71103, USA; (A.D.K.); (I.U.); (E.M.C.)
| | - Omar Viswanath
- College of Medicine-Phoenix, University of Arizona, Phoenix, AZ 85004, USA;
- Department of Anesthesiology, Creighton University School of Medicine, Omaha, NE 68124, USA
- Valley Anesthesiology and Pain Consultants—Envision Physician Services, Phoenix, AZ 85004, USA
| | - Ivan Urits
- Department of Anesthesiology, Louisiana State University Health Shreveport, Shreveport, LA 71103, USA; (A.D.K.); (I.U.); (E.M.C.)
- Southcoast Physicians Group Pain Medicine, Southcoast Health, Wareham, MA 02571, USA
| | - Andrea G. Boyer
- Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, SC 29464, USA;
| | - Elyse M. Cornett
- Department of Anesthesiology, Louisiana State University Health Shreveport, Shreveport, LA 71103, USA; (A.D.K.); (I.U.); (E.M.C.)
| | - Adam M. Kaye
- Department of Pharmacy Practice, Thomas J. Long School of Pharmacy and Health Sciences, University of the Pacific, Stockton, CA 95211, USA;
| |
Collapse
|
39
|
Abstract
Rotavirus infection is highly prevalent in children, and the most severe effects are diarrhea and vomiting. It is well accepted that the enteric nervous system (ENS) is activated and plays an important role, but knowledge of how rotavirus activates nerves within ENS and to the vomiting center is lacking. Serotonin is released during rotavirus infection, and antagonists to the serotonin receptor subtype 3 (5-HT3 receptor) can attenuate rotavirus-induced diarrhea. In this study, we used a 5-HT3 receptor knockout (KO) mouse model to investigate the role of this receptor in rotavirus-induced diarrhea, motility, electrolyte secretion, inflammatory response, and vomiting reflex. The number of diarrhea days (P = 0.03) and the number of mice with diarrhea were lower in infected 5-HT3 receptor KO than wild-type pups. In vivo investigation of fluorescein isothiocyanate (FITC)-dextran transit time showed that intestinal motility was lower in the infected 5-HT3 receptor KO compared to wild-type mice (P = 0.0023). Ex vivo Ussing chamber measurements of potential difference across the intestinal epithelia showed no significant difference in electrolyte secretion between the two groups. Immediate early gene cFos expression level showed no difference in activation of the vomiting center in the brain. Cytokine analysis of the intestine indicated a low effect of inflammatory response in rotavirus-infected mice lacking the 5-HT3 receptor. Our findings indicate that the 5-HT3 receptor is involved in rotavirus-induced diarrhea via its effect on intestinal motility and that the vagus nerve signaling to the vomiting center occurs also in the absence of the 5-HT3 receptor. IMPORTANCE The mechanisms underlying rotavirus-induced diarrhea and vomiting are not yet fully understood. To better understand rotavirus pathophysiology, characterization of nerve signaling within the ENS and through vagal efferent nerves to the brain, which have been shown to be of great importance to the disease, is necessary. Serotonin (5-HT), a mediator of both diarrhea and vomiting, has been shown to be released from enterochromaffin cells in response to rotavirus infection and the rotavirus enterotoxin NSP4. Here, we investigated the role of the serotonin receptor 5-HT3, which is known to be involved in the nerve signals that regulate gut motility, intestinal secretion, and signal transduction through the vagus nerve to the brain. We show that the 5-HT3 receptor is involved in rotavirus-induced diarrhea by promoting intestinal motility. The findings shed light on new treatment possibilities for rotavirus diarrhea.
Collapse
|
40
|
Grifka-Walk HM, Jenkins BR, Kominsky DJ. Amino Acid Trp: The Far Out Impacts of Host and Commensal Tryptophan Metabolism. Front Immunol 2021; 12:653208. [PMID: 34149693 PMCID: PMC8213022 DOI: 10.3389/fimmu.2021.653208] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 05/11/2021] [Indexed: 12/12/2022] Open
Abstract
Tryptophan (Trp) is an essential amino acid primarily derived from the diet for use by the host for protein synthesis. The intestinal tract is lined with cells, both host and microbial, that uptake and metabolize Trp to also generate important signaling molecules. Serotonin (5-HT), kynurenine and its downstream metabolites, and to a lesser extent other neurotransmitters are generated by the host to signal onto host receptors and elicit physiological effects. 5-HT production by neurons in the CNS regulates sleep, mood, and appetite; 5-HT production in the intestinal tract by enterochromaffin cells regulates gastric motility and inflammation in the periphery. Kynurenine can signal onto the aryl hydrocarbon receptor (AHR) to elicit pleiotropic responses from several cell types including epithelial and immune cells, or can be further metabolized into bioactive molecules to influence neurodegenerative disease. There is a remarkable amount of cross-talk with the microbiome with regard to tryptophan metabolites as well. The gut microbiome can regulate the production of host tryptophan metabolites and can use dietary or recycled trp to generate bioactive metabolites themselves. Trp derivatives like indole are able to signal onto xenobiotic receptors, including AHR, to elicit tolerogenic effects. Here, we review studies that demonstrate that tryptophan represents a key intra-kingdom signaling molecule.
Collapse
Affiliation(s)
- Heather M Grifka-Walk
- Department of Microbiology and Immunology, Montana State University, Bozeman, MT, United States
| | - Brittany R Jenkins
- Department of Microbiology and Immunology, Montana State University, Bozeman, MT, United States
| | - Douglas J Kominsky
- Department of Microbiology and Immunology, Montana State University, Bozeman, MT, United States
| |
Collapse
|
41
|
Holik AK, Schweiger K, Stoeger V, Lieder B, Reiner A, Zopun M, Hoi JK, Kretschy N, Somoza MM, Kriwanek S, Pignitter M, Somoza V. Gastric Serotonin Biosynthesis and Its Functional Role in L-Arginine-Induced Gastric Proton Secretion. Int J Mol Sci 2021; 22:5881. [PMID: 34070942 PMCID: PMC8199169 DOI: 10.3390/ijms22115881] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 05/22/2021] [Accepted: 05/26/2021] [Indexed: 11/23/2022] Open
Abstract
Among mammals, serotonin is predominantly found in the gastrointestinal tract, where it has been shown to participate in pathway-regulating satiation. For the stomach, vascular serotonin release induced by gastric distension is thought to chiefly contribute to satiation after food intake. However, little information is available on the capability of gastric cells to synthesize, release and respond to serotonin by functional changes of mechanisms regulating gastric acid secretion. We investigated whether human gastric cells are capable of serotonin synthesis and release. First, HGT-1 cells, derived from a human adenocarcinoma of the stomach, and human stomach specimens were immunostained positive for serotonin. In HGT-1 cells, incubation with the tryptophan hydroxylase inhibitor p-chlorophenylalanine reduced the mean serotonin-induced fluorescence signal intensity by 27%. Serotonin release of 147 ± 18%, compared to control HGT-1 cells (set to 100%) was demonstrated after treatment with 30 mM of the satiating amino acid L-Arg. Granisetron, a 5-HT3 receptor antagonist, reduced this L-Arg-induced serotonin release, as well as L-Arg-induced proton secretion. Similarly to the in vitro experiment, human antrum samples released serotonin upon incubation with 10 mM L-Arg. Overall, our data suggest that human parietal cells in culture, as well as from the gastric antrum, synthesize serotonin and release it after treatment with L-Arg via an HTR3-related mechanism. Moreover, we suggest not only gastric distension but also gastric acid secretion to result in peripheral serotonin release.
Collapse
Affiliation(s)
- Ann-Katrin Holik
- Department of Physiological Chemistry, Faculty of Chemistry, University of Vienna, Althanstraße 14, 1090 Vienna, Austria; (A.-K.H.); (K.S.); (B.L.); (M.Z.); (M.P.)
| | - Kerstin Schweiger
- Department of Physiological Chemistry, Faculty of Chemistry, University of Vienna, Althanstraße 14, 1090 Vienna, Austria; (A.-K.H.); (K.S.); (B.L.); (M.Z.); (M.P.)
| | - Verena Stoeger
- Christian Doppler Laboratory for Bioactive Aroma Compounds, Faculty of Chemistry, University of Vienna, Althanstraße 14, 1090 Vienna, Austria; (V.S.); (J.K.H.)
| | - Barbara Lieder
- Department of Physiological Chemistry, Faculty of Chemistry, University of Vienna, Althanstraße 14, 1090 Vienna, Austria; (A.-K.H.); (K.S.); (B.L.); (M.Z.); (M.P.)
- Christian Doppler Laboratory for Bioactive Aroma Compounds, Faculty of Chemistry, University of Vienna, Althanstraße 14, 1090 Vienna, Austria; (V.S.); (J.K.H.)
| | - Angelika Reiner
- Pathologisch-Bakteriologisches Institut, Sozialmedizinisches Zentrum Ost- Donauspital, Langobardenstraße 122, 1220 Vienna, Austria;
| | - Muhammet Zopun
- Department of Physiological Chemistry, Faculty of Chemistry, University of Vienna, Althanstraße 14, 1090 Vienna, Austria; (A.-K.H.); (K.S.); (B.L.); (M.Z.); (M.P.)
| | - Julia K. Hoi
- Christian Doppler Laboratory for Bioactive Aroma Compounds, Faculty of Chemistry, University of Vienna, Althanstraße 14, 1090 Vienna, Austria; (V.S.); (J.K.H.)
| | - Nicole Kretschy
- Department of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Althanstraße 14, 1090 Vienna, Austria; (N.K.); (M.M.S.)
| | - Mark M. Somoza
- Department of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Althanstraße 14, 1090 Vienna, Austria; (N.K.); (M.M.S.)
- Food Chemistry and Molecular Sensory Science, Technical University of Munich, Lise-Meitner-Straße 34, 85354 Freising, Germany
- Leibniz Institute for Food Systems Biology, Technical University of Munich, Lise-Meitner-Str. 34, 85345 Freising, Germany
| | - Stephan Kriwanek
- Chirurgische Abteilung, Sozialmedizinisches Zentrum Ost- Donauspital, Langobardenstraße 122, 1220 Vienna, Austria;
| | - Marc Pignitter
- Department of Physiological Chemistry, Faculty of Chemistry, University of Vienna, Althanstraße 14, 1090 Vienna, Austria; (A.-K.H.); (K.S.); (B.L.); (M.Z.); (M.P.)
| | - Veronika Somoza
- Department of Physiological Chemistry, Faculty of Chemistry, University of Vienna, Althanstraße 14, 1090 Vienna, Austria; (A.-K.H.); (K.S.); (B.L.); (M.Z.); (M.P.)
- Christian Doppler Laboratory for Bioactive Aroma Compounds, Faculty of Chemistry, University of Vienna, Althanstraße 14, 1090 Vienna, Austria; (V.S.); (J.K.H.)
- Leibniz Institute for Food Systems Biology, Technical University of Munich, Lise-Meitner-Str. 34, 85345 Freising, Germany
- Nutritional Systems Biology, School of Life Sciences, Technical University of Munich, Lise-Meitner-Str. 34, 85345 Freising, Germany
| |
Collapse
|
42
|
Hellysaz A, Hagbom M. Understanding the Central Nervous System Symptoms of Rotavirus: A Qualitative Review. Viruses 2021; 13:v13040658. [PMID: 33920421 PMCID: PMC8069368 DOI: 10.3390/v13040658] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/06/2021] [Accepted: 04/08/2021] [Indexed: 01/08/2023] Open
Abstract
This qualitative review on rotavirus infection and its complications in the central nervous system (CNS) aims to understand the gut–brain mechanisms that give rise to CNS driven symptoms such as vomiting, fever, feelings of sickness, convulsions, encephalitis, and encephalopathy. There is substantial evidence to indicate the involvement of the gut–brain axis in symptoms such as vomiting and diarrhea. The underlying mechanisms are, however, not rotavirus specific, they represent evolutionarily conserved survival mechanisms for protection against pathogen entry and invasion. The reviewed studies show that rotavirus can exert effects on the CNS trough nervous gut–brain communication, via the release of mediators, such as the rotavirus enterotoxin NSP4, which stimulates neighboring enterochromaffin cells in the intestine to release serotonin and activate both enteric neurons and vagal afferents to the brain. Another route to CNS effects is presented through systemic spread via lymphatic pathways, and there are indications that rotavirus RNA can, in some cases where the blood brain barrier is weakened, enter the brain and have direct CNS effects. CNS effects can also be induced indirectly as a consequence of systemic elevation of toxins, cytokines, and/or other messenger molecules. Nevertheless, there is still no definitive or consistent evidence for the underlying mechanisms of rotavirus-induced CNS complications and more in-depth studies are required in the future.
Collapse
|
43
|
Simpson CA, Schwartz OS, Eliby D, Butler CA, Huang K, O'Brien-Simpson N, Callaghan BL, Dashper SG, Gooley PR, Whittle S, Haslam N, Simmons JG. Bugs and Brains, the Gut and Mental Health Study: a mixed-methods study investigating microbiota composition and function in anxiety, depression and irritable bowel syndrome. BMJ Open 2021; 11:e043221. [PMID: 33722869 PMCID: PMC7970253 DOI: 10.1136/bmjopen-2020-043221] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 02/23/2021] [Accepted: 02/23/2021] [Indexed: 12/17/2022] Open
Abstract
INTRODUCTION Research has highlighted relationships between the micro-organisms that inhabit our gastrointestinal tract (oral and gut microbiota) with host mood and gastrointestinal functioning. Mental health disorders and functional gastrointestinal disorders co-occur at high rates, although the mechanisms underlying these associations remain unclear. The Bugs and Brains Study aims to investigate complex relationships between anxiety/depression and irritable bowel syndrome (IBS) in two ways. First, its primary component will compare the gut and oral microbiota in females with anxiety/depression and/or IBS relative to controls, and investigate underlying physiological, endocrine and immune factors, as well as associations with diet and psychosocial factors. In an ancillary component, the study will also investigate gastrointestinal and mental health symptoms in a larger sample, and explore relationships with diet, exercise, oral health, substance use, medical history, early life adversity and psychosocial factors. METHODS AND ANALYSIS The Bugs and Brains Study aims to recruit 160 females to the primary component: (1) 40 controls; (2) 40 participants with a depressive/anxiety disorder, but no IBS; (3) 40 participants with IBS, but no depressive/anxiety disorder and (4) 40 participants with both depressive/anxiety disorder and IBS. Participation is completed within 1 month, and involves comprehensive questionnaires, anthropometrics, a diagnostic clinical interview, collection of two saliva samples, and stool, urine and hair samples. This study aims to use a systems biology approach to characterise oral and gut microbial composition and function using 16S rRNA gene sequencing and nuclear MR spectroscopy. As part of the ancillary component, it will collect questionnaire data from 1000 participants aged 18-40 years, capturing mental health, gastrointestinal health, oral health, diet and psychosocial factors. ETHICS AND DISSEMINATION Approval was granted by the University of Melbourne Human Research Ethics Committee (#1749221). All participants voluntarily provided informed consent. Results will be published in peer-reviewed journals and presented at scientific conferences.
Collapse
Affiliation(s)
- Carra A Simpson
- Melbourne School of Psychological Sciences, The University of Melbourne Faculty of Medicine Dentistry and Health Sciences, Melbourne, Victoria, Australia
- Melbourne Neuropsychiatry Centre, The University of Melbourne Faculty of Medicine Dentistry and Health Sciences, Melbourne, Victoria, Australia
| | - Orli S Schwartz
- Centre for Youth Mental Health, Orygen The National Centre of Excellence in Youth Mental Health, Parkville, Victoria, Australia
| | - Djamila Eliby
- Melbourne School of Psychological Sciences, The University of Melbourne Faculty of Medicine Dentistry and Health Sciences, Melbourne, Victoria, Australia
- Melbourne Neuropsychiatry Centre, The University of Melbourne Faculty of Medicine Dentistry and Health Sciences, Melbourne, Victoria, Australia
| | - Catherine A Butler
- Centre for Oral Health Research, Melbourne Dental School, Bio21 Institute, The University of Melbourne Faculty of Medicine Dentistry and Health Sciences, Melbourne, Victoria, Australia
| | - Katherine Huang
- Department of Biochemistry and Molecular Biology, The University of Melbourne Bio21 Molecular Science and Biotechnology Institute, Parkville, Victoria, Australia
| | - Neil O'Brien-Simpson
- Centre for Oral Health Research, Melbourne Dental School, Bio21 Institute, The University of Melbourne Faculty of Medicine Dentistry and Health Sciences, Melbourne, Victoria, Australia
| | - Bridget L Callaghan
- Melbourne Neuropsychiatry Centre, The University of Melbourne Faculty of Medicine Dentistry and Health Sciences, Melbourne, Victoria, Australia
- The Department of Psychology, University of California Los Angeles, Los Angeles, California, USA
| | - Stuart G Dashper
- Centre for Oral Health Research, Melbourne Dental School, Bio21 Institute, The University of Melbourne Faculty of Medicine Dentistry and Health Sciences, Melbourne, Victoria, Australia
| | - Paul R Gooley
- Department of Biochemistry and Molecular Biology, The University of Melbourne Bio21 Molecular Science and Biotechnology Institute, Parkville, Victoria, Australia
| | - Sarah Whittle
- Melbourne School of Psychological Sciences, The University of Melbourne Faculty of Medicine Dentistry and Health Sciences, Melbourne, Victoria, Australia
- Melbourne Neuropsychiatry Centre, The University of Melbourne Faculty of Medicine Dentistry and Health Sciences, Melbourne, Victoria, Australia
| | - Nick Haslam
- Melbourne School of Psychological Sciences, The University of Melbourne Faculty of Medicine Dentistry and Health Sciences, Melbourne, Victoria, Australia
| | - Julian G Simmons
- Melbourne School of Psychological Sciences, The University of Melbourne Faculty of Medicine Dentistry and Health Sciences, Melbourne, Victoria, Australia
- Melbourne Neuropsychiatry Centre, The University of Melbourne Faculty of Medicine Dentistry and Health Sciences, Melbourne, Victoria, Australia
| |
Collapse
|
44
|
Lee JG, Cho HJ, Jeong YM, Lee JS. Genetic Approaches Using Zebrafish to Study the Microbiota-Gut-Brain Axis in Neurological Disorders. Cells 2021; 10:cells10030566. [PMID: 33807650 PMCID: PMC8002147 DOI: 10.3390/cells10030566] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 02/26/2021] [Accepted: 02/28/2021] [Indexed: 12/12/2022] Open
Abstract
The microbiota-gut-brain axis (MGBA) is a bidirectional signaling pathway mediating the interaction of the microbiota, the intestine, and the central nervous system. While the MGBA plays a pivotal role in normal development and physiology of the nervous and gastrointestinal system of the host, its dysfunction has been strongly implicated in neurological disorders, where intestinal dysbiosis and derived metabolites cause barrier permeability defects and elicit local inflammation of the gastrointestinal tract, concomitant with increased pro-inflammatory cytokines, mobilization and infiltration of immune cells into the brain, and the dysregulated activation of the vagus nerve, culminating in neuroinflammation and neuronal dysfunction of the brain and behavioral abnormalities. In this topical review, we summarize recent findings in human and animal models regarding the roles of the MGBA in physiological and neuropathological conditions, and discuss the molecular, genetic, and neurobehavioral characteristics of zebrafish as an animal model to study the MGBA. The exploitation of zebrafish as an amenable genetic model combined with in vivo imaging capabilities and gnotobiotic approaches at the whole organism level may reveal novel mechanistic insights into microbiota-gut-brain interactions, especially in the context of neurological disorders such as autism spectrum disorder and Alzheimer's disease.
Collapse
Affiliation(s)
- Jae-Geun Lee
- Disease Target Structure Research Center, KRIBB, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea; (J.-G.L.); (H.-J.C.); (Y.-M.J.)
- KRIBB School, University of Science and Technology, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea
| | - Hyun-Ju Cho
- Disease Target Structure Research Center, KRIBB, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea; (J.-G.L.); (H.-J.C.); (Y.-M.J.)
| | - Yun-Mi Jeong
- Disease Target Structure Research Center, KRIBB, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea; (J.-G.L.); (H.-J.C.); (Y.-M.J.)
- Dementia DTC R&D Convergence Program, KIST, Hwarang-ro 14 gil 5, Seongbuk-gu, Seoul 02792, Korea
| | - Jeong-Soo Lee
- Disease Target Structure Research Center, KRIBB, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea; (J.-G.L.); (H.-J.C.); (Y.-M.J.)
- KRIBB School, University of Science and Technology, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea
- Dementia DTC R&D Convergence Program, KIST, Hwarang-ro 14 gil 5, Seongbuk-gu, Seoul 02792, Korea
- Correspondence: ; Tel.: +82-42-860-4643
| |
Collapse
|
45
|
Ying XD, Chen JX, Tu DY, Zhuang YC, Wu D, Shen L. Tetraphenylpyrazine-Based Luminescent Metal-Organic Framework for Chemical Sensing of Carcinoids Biomarkers. ACS APPLIED MATERIALS & INTERFACES 2021; 13:6421-6429. [PMID: 33523641 DOI: 10.1021/acsami.0c20893] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
A new non-interpenetrated three-dimensional (3D) pillared-layered TPP-based LMOF [Zn3(TPyTPP)0.5(BDC)3]·8DMF (denoted as Zn-MOF 1) was successfully prepared (TPyTPP = tetrakis(4-(pyridin-4-yl)phenyl)pyrazine and H2BDC = 1,4-benzenedicarboxylic acid). Zn-MOF 1 was characterized by single-crystal X-ray diffraction, PXRD, IR, N2 adsorption, thermogravimetric analysis, and luminescent spectrum. Impressively, luminescent sensing studies reveal that activated Zn-MOF 1 not only displays excellent luminescence-quenching efficiency with the values of high Ksv and low LODs toward 5-hydroxytryptamine (5-HT) and 5-hydroxyindole-3-acetic acid (5-HIAA), respectively, but also possesses outstanding sensing characteristics in terms of fast response, high sensitivity, and specific selectivity. Zn-MOF 1 performs as efficient sensing of carcinoid biomarkers to provide a fresh detection platform for the diagnosis of carcinoids. In addition, the sensing mechanism was also explored on the basis of ultraviolet-visible (UV-vis) absorption, DFT calculations, and structural analysis.
Collapse
Affiliation(s)
- Xu-Dong Ying
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Jian-Xiang Chen
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Dan-Yu Tu
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Yi-Cao Zhuang
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Di Wu
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Liang Shen
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| |
Collapse
|
46
|
Khalilian A, Ahmadimoghaddam D, Saki S, Mohammadi Y, Mehrpooya M. A randomized, double-blind, placebo-controlled study to assess efficacy of mirtazapine for the treatment of diarrhea predominant irritable bowel syndrome. Biopsychosoc Med 2021; 15:3. [PMID: 33536043 PMCID: PMC7860197 DOI: 10.1186/s13030-021-00205-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 01/27/2021] [Indexed: 02/07/2023] Open
Abstract
Background Ample evidence indicates the efficacy of serotonin type 3 (5-HT3) receptor antagonists in the treatment of patients with diarrhea-predominant irritable bowel syndrome (IBS-D). Mirtazapine is an atypical antidepressant with a well-known 5-HT3 receptor antagonist property. This study, therefore, was undertaken to investigate whether compared to placebo, mirtazapine would be efficacious and safe in the treatment of patients with IBS-D. Methods From November 2019 until July 2020, 67 patients meeting Rome IV criteria for IBS-D were randomized in a double-blind fashion into either the mirtazapine treatment group (n = 34) or the placebo treatment group (n = 33). Patients started with mirtazapine 15 mg/day at bedtime for one-week; after which the dose was increased to 30 mg/day for an additional 7-week. Outcomes included changes in the total IBS symptom severity score (IBS-SSS), Hospital anxiety and depression scale score (HADS), and IBS Quality of Life. Additionally, changes in the diary-based symptoms scores including pain, urgency of defecation, bloating, stool frequency, and stool consistency based on the 7-point Bristol Stool Form Scale (BSFS), and a number of days per week with pain, urgency, diarrhea, or bloating, once during the 1-week run-in period, and once during the last week of treatment were recorded. Results All analyses were performed on an Intention-to-Treat (ITT) analysis data set. The results showed compared to placebo, mirtazapine is more efficacious in decreasing the severity of IBS symptoms (P-value = 0.002). Further, at the end of the treatment period, all diary-derived symptoms except bloating showed significantly more improvement in the mirtazapine-treated subjects compared to the placebo-treated subjects. While was well-tolerated, mirtazapine also significantly improved the patients’ quality of life (P-value = 0.04) and anxiety symptoms (P-value = 0.005). Conclusions Overall, mirtazapine seems to have a potential benefit in the treatment of patients with IBS-D, particularly those with concomitant psychological symptoms. However, further studies are warranted to determine whether these findings are replicated. Trial registration Trial registration: Registration number at Iranian Registry of Clinical Trials: IRCT20120215009014N311. Registration date: 2019-10-21.
Collapse
Affiliation(s)
- Alireza Khalilian
- Department of Internal Medicine, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Davoud Ahmadimoghaddam
- Department of Pharmacology & Toxicology, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Shiva Saki
- Department of Clinical Pharmacy, School of Pharmacy, Hamadan University of Medical Sciences, Shahid Fahmideh Ave, Hamadan, 6517838678, Iran
| | - Younes Mohammadi
- Modeling of Noncommunicable Diseases Research Center, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Maryam Mehrpooya
- Department of Clinical Pharmacy, School of Pharmacy, Hamadan University of Medical Sciences, Shahid Fahmideh Ave, Hamadan, 6517838678, Iran.
| |
Collapse
|
47
|
Clinical Phenotypes of Parkinson's Disease Associate with Distinct Gut Microbiota and Metabolome Enterotypes. Biomolecules 2021; 11:biom11020144. [PMID: 33499229 PMCID: PMC7911638 DOI: 10.3390/biom11020144] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 01/19/2021] [Accepted: 01/20/2021] [Indexed: 12/26/2022] Open
Abstract
Parkinson’s disease (PD) is a clinically heterogenic disorder characterized by distinct clinical entities. Most studies on motor deficits dichotomize PD into tremor dominant (TD) or non-tremor dominant (non-TD) with akinetic-rigid features (AR). Different pathophysiological mechanisms may affect the onset of motor manifestations. Recent studies have suggested that gut microbes may be involved in PD pathogenesis. The aim of this study was to investigate the gut microbiota and metabolome composition in PD patients in relation to TD and non-TD phenotypes. In order to address this issue, gut microbiota and the metabolome structure of PD patients were determined from faecal samples using 16S next generation sequencing and gas chromatography–mass spectrometry approaches. The results showed a reduction in the relative abundance of Lachnospiraceae, Blautia, Coprococcus, Lachnospira, and an increase in Enterobacteriaceae, Escherichia and Serratia linked to non-TD subtypes. Moreover, the levels of important molecules (i.e., nicotinic acid, cadaverine, glucuronic acid) were altered in relation to the severity of phenotype. We hypothesize that the microbiota/metabolome enterotypes associated to non-TD subtypes may favor the development of gut inflammatory environment and gastrointestinal dysfunctions and therefore a more severe α-synucleinopathy. This study adds important information to PD pathogenesis and emphasizes the potential pathophysiological link between gut microbiota/metabolites and PD motor subtypes.
Collapse
|
48
|
Gut bacteria-derived 5-hydroxyindole is a potent stimulant of intestinal motility via its action on L-type calcium channels. PLoS Biol 2021; 19:e3001070. [PMID: 33481771 PMCID: PMC7857600 DOI: 10.1371/journal.pbio.3001070] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 02/03/2021] [Accepted: 12/29/2020] [Indexed: 12/24/2022] Open
Abstract
Microbial conversion of dietary or drug substrates into small bioactive molecules represents a regulatory mechanism by which the gut microbiota alters intestinal physiology. Here, we show that a wide variety of gut bacteria can metabolize the dietary supplement and antidepressant 5-hydroxytryptophan (5-HTP) to 5-hydroxyindole (5-HI) via the tryptophanase (TnaA) enzyme. Oral administration of 5-HTP results in detection of 5-HI in fecal samples of healthy volunteers with interindividual variation. The production of 5-HI is inhibited upon pH reduction in in vitro studies. When administered orally in rats, 5-HI significantly accelerates the total gut transit time (TGTT). Deciphering the underlying mechanisms of action reveals that 5-HI accelerates gut contractility via activation of L-type calcium channels located on the colonic smooth muscle cells. Moreover, 5-HI stimulation of a cell line model of intestinal enterochromaffin cells results in significant increase in serotonin production. Together, our findings support a role for bacterial metabolism in altering gut motility and lay the foundation for microbiota-targeted interventions.
Collapse
|
49
|
Luo M, Zhuang X, Tian Z, Xiong L. Alterations in short-chain fatty acids and serotonin in irritable bowel syndrome: a systematic review and meta-analysis. BMC Gastroenterol 2021; 21:14. [PMID: 33407171 PMCID: PMC7788881 DOI: 10.1186/s12876-020-01577-5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Accepted: 12/09/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Short-chain fatty acids (SCFAs) and serotonin (5-hydroxytryptamine, 5-HT) may be associated with the pathogenesis of irritable bowel syndrome (IBS). There are some reports of alterations in SCFAs and 5-HT in IBS, but their results are inconsistent. We aimed to perform a meta-analysis to assess alterations in SCFAs and 5-HT in IBS patients and their potential role in the abnormal brain-gut-microbiota (BGM) axis. METHODS Case-control studies detecting SCFAs and 5-HT in IBS patients were identified from PubMed, Web of Science, Cochrane Library, and Scopus databases to identify relevant articles up to September 2018. The standardized mean differences (SMDs) with 95% confidence intervals (CIs) of SCFAs and 5-HT were calculated by REVIEW MANAGER 5.3 to evaluate the alterations of 5-HT and SCFAs in IBS. RESULTS Five studies on SCFAs and 5 on 5-HT in IBS patients were included. As compared to healthy controls (HCs), the SMDs of 5-HT in IBS patients was 2.35 (95% CI 0.46-4.24) and the SMDs of total SCFAs, acetic acid, propionic acid, and butyric acid in IBS patients were - 0.01 (95% CI - 0.57-0.55), - 0.04 (95% CI - 0.55-0.47), 0.07 (95% CI - 0.45-0.60), and - 0.00 (95% CI - 0.49-0.49), respectively. CONCLUSIONS There was an increase in 5-HT in blood of IBS patients, indicating the increased 5-HT in blood may be involved in IBS pathogenesis. However, there were no significant differences in SCFAs in feces between IBS patients and HCs. But the study did not differentiate between subgroups of IBS. These findings might provide insight for future studies of the BGM axis in the pathogenesis of IBS. Mei Luo and Xiaojun Zhuang contributed equally to the writing of this article.
Collapse
Affiliation(s)
- Mei Luo
- Department of Gastroenterology and Hepatology, the First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Xiaojun Zhuang
- Department of Gastroenterology and Hepatology, the First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Zhenyi Tian
- Department of Gastroenterology and Hepatology, the First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Lishou Xiong
- Department of Gastroenterology and Hepatology, the First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China.
| |
Collapse
|
50
|
Cernat A, Ştefan G, Tertis M, Cristea C, Simon I. An overview of the detection of serotonin and dopamine with graphene-based sensors. Bioelectrochemistry 2020; 136:107620. [DOI: 10.1016/j.bioelechem.2020.107620] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 07/23/2020] [Accepted: 07/23/2020] [Indexed: 02/06/2023]
|