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Li YF, Udayakumar V, Sathuvan M, Liu Y, Liu X, Zhang YQ, Ma WY, Zhang W, Tang S, Cheong KL. Effects of laminarin zwitterionic carboxylate and sulfonate on the intestinal barrier function and gut microbiota. Carbohydr Polym 2022; 278:118898. [PMID: 34973726 DOI: 10.1016/j.carbpol.2021.118898] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 11/11/2021] [Accepted: 11/12/2021] [Indexed: 02/07/2023]
Abstract
Ulcerative colitis (UC) has become a global chronic disease that keeps increasing. This study was to explore the treatment effectiveness of two functional zwitterionic laminarins, zwitterionic sulfonate (LZS) and zwitterionic carboxylate (LZC), in dextran sulfate sodium (DSS) induced mouse model. FT-IR and NMR techniques were used to characterize the aforementioned functional zwitterion. Compared to UC mice, the composition and diversity of gut microbiota were significantly increased in the treated mice. Specifically, the composition of Bacteroidetes increased and the level of Firmicutes decreased. Moreover, we demonstrated the alleviation of colitis by LZS and LZC reflected by the improved integrity of intestinal mucosa, which includes increased number of goblet cells, mucin protein production, maintenance of collagens, as well as the lower extent of intestinal fibrosis. These findings indicated the potentials of LZC and LZS as promising agents to prevent colitis via adjusting gut microbiota and maintaining intestinal barrier integrity.
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Affiliation(s)
- Yun-Feng Li
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Department of Biology, College of Science, Shantou University, Shantou 515063, Guangdong, China
| | - Veerabagu Udayakumar
- Laboratorio de Nanocelulosa y Biomateriales, Departamento de Ingeniería Química, Biotecnología y Materiales, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Santiago 8370456, Chile
| | - Malairaj Sathuvan
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Department of Biology, College of Science, Shantou University, Shantou 515063, Guangdong, China
| | - Yang Liu
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Department of Biology, College of Science, Shantou University, Shantou 515063, Guangdong, China
| | - Xiaojuan Liu
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Department of Biology, College of Science, Shantou University, Shantou 515063, Guangdong, China
| | - Yi-Qing Zhang
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Department of Biology, College of Science, Shantou University, Shantou 515063, Guangdong, China
| | - Wan-Ying Ma
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Department of Biology, College of Science, Shantou University, Shantou 515063, Guangdong, China
| | - Wancong Zhang
- Department of Plastic Surgery and Burn Center, Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
- Plastic Surgery Institute of Shantou University Medical College, Shantou, Guangdong, China
| | - Shijie Tang
- Department of Plastic Surgery and Burn Center, Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
- Plastic Surgery Institute of Shantou University Medical College, Shantou, Guangdong, China
| | - Kit-Leong Cheong
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Department of Biology, College of Science, Shantou University, Shantou 515063, Guangdong, China
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Involvement of Intestinal Goblet Cells and Changes in Sodium Glucose Transporters Expression: Possible Therapeutic Targets in Autistic BTBR T +Itpr3 tf/J Mice. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph182111328. [PMID: 34769857 PMCID: PMC8583041 DOI: 10.3390/ijerph182111328] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/21/2021] [Accepted: 10/26/2021] [Indexed: 12/22/2022]
Abstract
Autism spectrum disorder is a neurodevelopmental syndrome with a complicated etiology and could be responsible for disrupted gastrointestinal tract microbiota. The aim of this work was to study intestinal samples from an autistic animal model (BTBR mouse strain) to better describe gastrointestinal alterations. We performed a morphological and biological evaluation of small intestine samples. In terms of morphology, we studied the goblet cells, cells of intestinal mucosal responsible for the production and maintenance of the protective mucous blanket. Alterations in their secretion may indicate an altered rate of mucus synthesis and this is one of the possible causes of gastrointestinal problems. In terms of biological evaluation, impaired regulation of glucose homeostasis regulated by sodium-glucose transporters has been suggested as an important component of obesity and associated comorbidities; therefore, this study analyzed the expression of sodium/glucose transporter-1 and -3 in BTBR mice to better define their role. We demonstrated that, in BTBR mice as compared to C57BL/6J (B6) strain animals: (1) The goblet cells had different protein content in their vesicles and apparently a larger number of Golgi cisternae; (2) the expression and level of sodium/glucose transporters were higher. These findings could suggest new possible targets in autism spectrum disorder to maintain mucus barrier function.
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Wells N, Quigley J, Pascua J, Pinkowski N, Almaiman L, Brasser SM, Hong MY. Effects of low-to-moderate ethanol consumption on colonic growth and gene expression in young adult and middle-aged male rats. PLoS One 2020; 15:e0243499. [PMID: 33326448 PMCID: PMC7743962 DOI: 10.1371/journal.pone.0243499] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 11/22/2020] [Indexed: 01/24/2023] Open
Abstract
Excessive alcohol consumption is a risk factor associated with colorectal cancer; however, some epidemiological studies have reported that moderate alcohol consumption may not contribute additional risk or may provide a protective effect reducing colorectal cancer risk. Prior research highlights the importance of proliferation, differentiation, and apoptosis as parameters to consider when evaluating colonic cell growth and tumorigenesis. The present study investigated whether chronic low-to-moderate ethanol consumption altered these parameters of colonic cell growth and expression of related genes. Twenty-four nondeprived young adult (109 days old) and 24 nondeprived middle-aged (420 days old) Wistar rats were randomly assigned to an ethanol-exposed or a water control group (n = 12/group). The ethanol group was provided voluntary access to a 20% v/v ethanol solution on alternate days for 13 weeks. Colon tissues were collected for quantitative immunohistochemical analyses of cell proliferation, differentiation and apoptosis using Ki-67, goblet cell and TUNEL, respectively. Gene expression of cyclin D1 (Ccnd1), Cdk2, Cdk4, p21waf1/cip1 (Cdkn1a), E-cadherin (Cdh1) and p53 were determined by quantitative real-time polymerase chain reaction in colonic scraped mucosa. Ethanol treatment resulted in a lower cell proliferation index and proliferative zone, and lower Cdk2 expression in both age groups, as well as trends toward lower Ccnd1 and higher Cdkn1a expression. Cell differentiation was modestly but significantly reduced by ethanol treatment only in older animals. Overall, older rats showed decreases in apoptosis and gene expression of Cdk4, Cdh1, and p53 compared to younger rats, but there was no observed effect of ethanol exposure on these measures. These findings suggest that low-to-moderate ethanol consumption improves at least one notable parameter in colonic tumorigenesis (cell proliferation) and associated gene expression regardless of age, however, selectively decreased cell differentiation among older subjects.
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Affiliation(s)
- Nicole Wells
- School of Exercise and Nutritional Sciences, San Diego State University, San Diego, CA, United States of America
| | - Jacqueline Quigley
- Department of Psychology, San Diego State University, San Diego, CA, United States of America
| | - Jeremy Pascua
- Department of Psychology, San Diego State University, San Diego, CA, United States of America
| | - Natalie Pinkowski
- Department of Psychology, San Diego State University, San Diego, CA, United States of America
| | - Lama Almaiman
- Department of Psychology, San Diego State University, San Diego, CA, United States of America
| | - Susan M. Brasser
- Department of Psychology, San Diego State University, San Diego, CA, United States of America
| | - Mee Young Hong
- School of Exercise and Nutritional Sciences, San Diego State University, San Diego, CA, United States of America
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Tao C, Zhao X, Gao K, Ji W, Zhang Y. Thoracoabdominal respiratory disorder induced by cadmium aerosol and analyzed with a new machine vision model in vivo. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 683:668-680. [PMID: 31150887 DOI: 10.1016/j.scitotenv.2019.05.146] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 05/09/2019] [Accepted: 05/11/2019] [Indexed: 06/09/2023]
Abstract
Inhalable environmental pollutants induce pulmonary malfunction, which alters thoracoabdominal respiratory conditions. Traditional methods of recording pressure differences or existing machine vision analyses for detecting respiratory abnormalities are not suitable for synchronous thoracic and abdominal respiratory detections. The present study provides a new method that combines a model of thoracoabdominal localization and distribution based on respiratory physiological characteristics and a machine vision analysis on respiratory conditions in mice exposed to aqueous aerosol containing cadmium with classical symptoms. Thoracoabdominal respirations of mice were similar to male humans based on thoracic and abdominal composite respiration and the primarily presented abdominal respiration. Under environmental inhalable cadmium doses (1, 3, 5 mM CdCl2 in solution respectively atomized to be 112.41, 337.23, 562.05 μg/g Cd/Aerosol), the pathological thoracoabdominal respirations of mice showed that abdominal respiration contributed more to respiratory compensation and presented greater adaptive adjustments and more obvious fluctuations during lung injury than thoracic respiration, which suggests that toxic aerosol from a high-risk work environment quickly induces discernible respiratory clinical manifestations in occupational groups, as a warning for health, and abdominal obesity is unfavorable for male respiratory compensation. The respiratory abnormality shown in machine vision analysis was verified in pulmonary structural changes and hypoxia stress. Conclusively, the present method may be used to test the effects of aerosols on respiratory state and provides new prospects for toxicity determinations and risk evaluations of aerosols in the respiratory system in vivo.
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Affiliation(s)
- Chen Tao
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Xuejing Zhao
- School of Mathematics and Statistics, Lanzhou University, Lanzhou 730000, China
| | - Ke Gao
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Weihong Ji
- Institute of Natural and Mathematical Sciences, Massey University, Albany 0745, Auckland, New Zealand
| | - Yingmei Zhang
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
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Aylward M, Beselaar LC, Alagaili AN, Amor NMS, Mohammed OB, Kotzé SH. A comparative morphological and histological study of the gastrointestinal tract of four insectivorous bat species: Asellia tridens, Chaerephon pumilus, Nycteris thebaica, Rhinopoma hardwickii. J Morphol 2019; 280:1106-1117. [PMID: 31116472 DOI: 10.1002/jmor.21004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 04/30/2019] [Accepted: 05/03/2019] [Indexed: 11/11/2022]
Abstract
Various studies address the morphology of the gastrointestinal tracts (GITs) of insectivorous bat species. However, detailed morphometric studies including mucin histochemistry are scarce. This study compares various GIT measurements as well as the quantification of intestinal mucin secreting cells in four insectivorous bat species representing four different families of Chiroptera. Alcian blue/Periodic acid Schiff's stain was used to differentiate between acid and neutral mucin-secreting cells while the Aldehyde fuchsin/Alcian blue stain further differentiated between two acid mucins, namely sialo-, and sulphomucins. The number of cells was quantified and statistically analysed. All species had a simple GIT morphology represented by a simple, completely glandular stomach and the absence of a cecum. The exception was R. hardwickii, where a small cecum was observed which had histological mucosal features of both the small and large intestine. In R.hardwickii, distal to the cecum, typical colonic mucosal features such as the absence of villi and an abundance of goblet cells were observed. In all four species, the total number of goblet cells increased from the proximal to the distal intestinal regions. Mixed (acid and neutral) mucins dominated the entire GIT of all species. Neutral mucin-secreting cells were observed in the gastric pylorus and proximal intestinal regions in all species. Brunner's glands stained positive for neutral mucins. Exclusively acid mucin-secreting cells were seen in the distal intestinal regions of all species except N. thebaica. Sulphomucin-secreting cells were the most prominent acid mucin cell-type towards the distal intestine. The distribution of different mucin secreting cells indirectly provides information regarding the quality of the intestinal biofilm in the species studied.
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Affiliation(s)
- Mikal Aylward
- Division of Clinical Anatomy, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, Stellenbosch, South Africa
| | - Leandrie C Beselaar
- Division of Clinical Anatomy, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, Stellenbosch, South Africa
| | - Abdulaziz N Alagaili
- Department of Zoology, College of Science, King Saud University, King Saud University Mammals Research Chair, Riyadh, Saudi Arabia
| | - Nabil M S Amor
- Department of Zoology, College of Science, King Saud University, King Saud University Mammals Research Chair, Riyadh, Saudi Arabia
| | - Osama B Mohammed
- Department of Zoology, College of Science, King Saud University, King Saud University Mammals Research Chair, Riyadh, Saudi Arabia
| | - Sanet H Kotzé
- Division of Clinical Anatomy, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, Stellenbosch, South Africa
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Thorpe D, Butler R, Sultani M, Vanhoecke B, Stringer A. Irinotecan-Induced Mucositis Is Associated with Goblet Cell Dysregulation and Neural Cell Damage in a Tumour Bearing DA Rat Model. Pathol Oncol Res 2019; 26:955-965. [PMID: 30919275 DOI: 10.1007/s12253-019-00644-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 03/19/2019] [Indexed: 01/02/2023]
Abstract
Irinotecan-induced mucositis is a major oncological problem. Goblet cells secrete mucus, protecting the intestinal mucosa, with secretion altered during mucositis. The enteric nervous system is involved in regulating gut motility and secretion. The aim of this study was to determine whether enteric neural cells and goblet cells are altered following irinotecan treatment. Tumour-bearing Dark Agouti rats were administered a single dose of 175 mg/kg of irinotecan intraperitoneally and 0.01 mg/kg atropine subcutaneously. Experimental and untreated control rats were killed at times 6, 24, 48, 72, 96 and 120 h after treatment. Jejunum and colon samples were formalin fixed. Haematoxylin and eosin staining, Alcian Blue-PAS staining, and immunohistochemistry with S-100 antibody (neural cell marker) were carried out. Statistical analyses were carried out using Kruskal-Wallis test with Dunns post test, Mann Whitney U test and nonlinear regression. Total goblet cells decreased at 72 h compared with controls in the colon (p < 0.05). The percentage of cavitated goblet cells decreased compared to all other time points at 120 h in the colon. The number of S-100 positive cells in the submucosal plexus decreased in the colon (p = 0.0046) and in the myenteric plexus of the jejunum and colon (p = 0.0058 and p = 0.0022, respectively), when comparing treated with control. Enteric ganglia in the myenteric plexus of the jejunum decreased at 24 h and 96 h. Irinotecan-induced mucositis is associated with increases in mucus secretion, and enteric neural cell change. These changes may contribute to the pathophysiology of mucositis through the dysregulation of neural signalling.
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Affiliation(s)
- Daniel Thorpe
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, 5001, Australia.
| | - Ross Butler
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, 5001, Australia
| | - Masooma Sultani
- School of Medical Sciences, Adelaide University, South Australia, Adelaide, 5001, Australia
| | - Barbara Vanhoecke
- Center for Microbiology Ecology and Technology, University of Ghent, Ghent, Belgium
| | - Andrea Stringer
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, 5001, Australia
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Pinheiro C, Venter ML, Sahd L, Bronner GN, Kotzé SH. Comparative gastrointestinal morphology of seven golden mole species (Mammalia: Chrysochloridae) from South Africa. J Morphol 2018; 279:1776-1786. [DOI: 10.1002/jmor.20900] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 08/17/2018] [Accepted: 09/04/2018] [Indexed: 11/12/2022]
Affiliation(s)
- Cassandra Pinheiro
- Division of Anatomy and Histology, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences; Stellenbosch University; Cape Town South Africa
| | - Michaela L. Venter
- Division of Anatomy and Histology, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences; Stellenbosch University; Cape Town South Africa
| | - Lauren Sahd
- Division of Anatomy and Histology, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences; Stellenbosch University; Cape Town South Africa
| | - Gary N. Bronner
- Department of Biological Sciences; University of Cape Town; Rondebosch South Africa
| | - Sanet H. Kotzé
- Division of Anatomy and Histology, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences; Stellenbosch University; Cape Town South Africa
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Lung damage analyzed by machine vision on tissue sections of mice. Arch Toxicol 2017; 92:425-439. [DOI: 10.1007/s00204-017-2023-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 06/28/2017] [Indexed: 01/14/2023]
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