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Park J, Yamamoto Y, Hidaka K, Wada-Takahashi S, Takahashi SS, Morozumi T, Kubota N, Saita M, Saruta J, Sakaguchi W, To M, Shimizu T, Mikuni-Takagaki Y, Tsukinoki K. Effects of Diabetes and Voluntary Exercise on IgA Concentration and Polymeric Immunoglobulin Receptor Expression in the Submandibular Gland of Rats. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:medicina59040789. [PMID: 37109747 PMCID: PMC10144866 DOI: 10.3390/medicina59040789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 04/08/2023] [Accepted: 04/12/2023] [Indexed: 04/29/2023]
Abstract
Background and Objectives: Patients with diabetes are more susceptible to upper respiratory tract infections (URTIs) because they are easily infected. Salivary IgA (sali-IgA) levels play a major role in transmitting URTIs. Sali-IgA levels are determined by salivary gland IgA production and polymeric immunoglobulin receptor (poly-IgR) expression. However, it is unknown whether salivary gland IgA production and poly-IgR expression are decreased in patients with diabetes. While exercise is reported to increase or decrease the sali-IgA levels, it is unclear how exercise affects the salivary glands of patients with diabetes. This study aimed to determine the effects of diabetes and voluntary exercise on IgA production and poly-IgR expression in the salivary glands of diabetic rats. Materials and Methods: Ten spontaneously diabetic Otsuka Long-Evans Tokushima Fatty (OLETF) rats (eight-week-old) were divided into two groups of five rats each: a non-exercise group (OLETF-C) and a voluntary wheel-running group (OLETF-E). Five Long-Evans Tokushima Otsuka (LETO) rats without diabetes were bred under the same conditions as the OLETF-C. Sixteen weeks after the study began, the submandibular glands (SGs) were collected and analyzed for IgA and poly-IgR expression levels. Results: IgA concentrations and poly-IgR expression levels in SGs were lower in OLETF-C and OLETF-E than in LETO (p < 0.05). These values did not differ between the OLETF-C and OLETF-E. Conclusions: Diabetes decreases IgA production and poly-IgR expression in the salivary glands of rats. Moreover, voluntary exercise increases sali-IgA levels but does not increase IgA production and poly-IgR expression in the salivary glands of diabetic rats. Increasing IgA production and poly-IgR expression in the salivary glands, which is reduced in diabetes, might require slightly higher-intensity exercise than voluntary exercise under the supervision of a doctor.
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Affiliation(s)
- Jaebum Park
- Department of Environmental Pathology, Kanagawa Dental University, 82 Inaoka, Yokosuka 2388580, Kanagawa, Japan
| | - Yuko Yamamoto
- Department of Dental Hygiene, Kanagawa Dental University, Junior College, 82 Inaoka, Yokosuka 2388580, Kanagawa, Japan
| | - Kouki Hidaka
- Department of Restorative Dentistry, Kanagawa Dental University, 82 Inaoka, Yokosuka 2388580, Kanagawa, Japan
| | - Satoko Wada-Takahashi
- Department of Oral Physiology, Kanagawa Dental University, 82 Inaoka, Yokosuka 2388580, Kanagawa, Japan
| | - Shun-Suke Takahashi
- Department of Pharmacology, Kanagawa Dental University, 82 Inaoka, Yokosuka 2388580, Kanagawa, Japan
| | - Toshiya Morozumi
- Department of Endodontics, The Nippon Dental University School of Life Dentistry at Niigata, 1-8 Hamaura-cho, Chuo-ku, Niigata 9518580, Niigata, Japan
| | - Nobuhisa Kubota
- Department of Diagnostic Pathology, Kanagawa Dental University, 82 Inaoka, Yokosuka 2388580, Kanagawa, Japan
| | - Makiko Saita
- Department of Fixed Prosthodontics, Kanagawa Dental University, 82 Inaoka, Yokosuka 2388580, Kanagawa, Japan
| | - Juri Saruta
- Department of Education Planning, Kanagawa Dental University, 82 Inaoka, Yokosuka 2388580, Kanagawa, Japan
| | - Wakako Sakaguchi
- Department of Environmental Pathology, Kanagawa Dental University, 82 Inaoka, Yokosuka 2388580, Kanagawa, Japan
| | - Masahiro To
- Department of Clinical Oral Anatomy, Kanagawa Dental University, 82 Inaoka, Yokosuka 2388580, Kanagawa, Japan
| | - Tomoko Shimizu
- Department of Implantology and Periodontology, Kanagawa Dental University, 3-31-6 Tsuruya, Kanagawa-ku, Yokohama 2210835, Kanagawa, Japan
| | | | - Keiichi Tsukinoki
- Department of Environmental Pathology, Kanagawa Dental University, 82 Inaoka, Yokosuka 2388580, Kanagawa, Japan
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Ojwach J, Adetunji AI, Mutanda T, Mukaratirwa S. Oligosaccharides production from coprophilous fungi: An emerging functional food with potential health-promoting properties. BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2022; 33:e00702. [PMID: 35127459 PMCID: PMC8803601 DOI: 10.1016/j.btre.2022.e00702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 01/08/2022] [Accepted: 01/13/2022] [Indexed: 11/26/2022]
Abstract
Functional foods are essential food products that possess health-promoting properties for the treatment of infectious diseases. In addition, they provide energy and nutrients, which are required for growth and survival. They occur as prebiotics or dietary supplements, including oligosaccharides, processed foods, and herbal products. However, oligosaccharides are more efficiently recognized and utilized, as they play a fundamental role as functional ingredients with great potential to improve health in comparison to other dietary supplements. They are low molecular weight carbohydrates with a low degree of polymerization. They occur as fructooligosaccharide (FOS), inulooligosaccharadie (IOS), and xylooligosaccahride (XOS), depending on their monosaccharide units. Oligosaccharides are produced by acid or chemical hydrolysis. However, this technique is liable to several drawbacks, including inulin precipitation, high processing temperature, low yields, and high production costs. As a consequence, the application of microbial enzymes for oligosaccharide production is recognized as a promising strategy. Microbial enzymatic production of FOS and IOS occurs by submerged or solid-state fermentation in the presence of suitable substrates (sucrose, inulin) and catalyzed by fructosyltransferases and inulinases. Incorporation of FOS and IOS enriches the rheological and physiological characteristics of foods. They are used as low cariogenic sugar substitutes, suitable for diabetics, and as prebiotics, probiotics and nutraceutical compounds. In addition, these oligosaccharides are employed as anticancer, antioxidant agents and aid in mineral absorption, lipid metabolism, immune regulation etc. This review, therefore, focuses on the occurrence, physico-chemical characteristics, and microbial enzymatic synthesis of FOS and IOS from coprophilous fungi. In addition, the potential health benefits of these oligosaccharides were discussed in detail.
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Affiliation(s)
- Jeff Ojwach
- School of Environmental Sciences, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, United Kingdom
- Department of Biodiversity and Conservation Biology, Faculty of Natural Science, University of the Western Cape, Private Bag X17 Bellville 7530, South Africa
- School of Life Sciences, College of Agriculture Engineering and Science, University of KwaZulu-Natal (Westville Campus), Private Bag X54001, Durban 4000, South Africa
| | - Adegoke Isiaka Adetunji
- School of Life Sciences, College of Agriculture Engineering and Science, University of KwaZulu-Natal (Westville Campus), Private Bag X54001, Durban 4000, South Africa
| | - Taurai Mutanda
- Centre for Algal Biotechnology, Department of Nature Conservation, Faculty of Natural Sciences, Mangosuthu University of Technology, P.O. Box 12363, Jacobs 4026, Durban, South Africa
| | - Samson Mukaratirwa
- School of Life Sciences, College of Agriculture Engineering and Science, University of KwaZulu-Natal (Westville Campus), Private Bag X54001, Durban 4000, South Africa
- One Health Center for Zoonoses and Tropical Veterinary Medicine, Ross University, School of Veterinary Medicine, P.O. Box 334, Basseterre, St. Kitts, West Indies
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Yuan S, Zheng S, Zheng K, Gao Y, Chen M, Li Y, Bai X. Sympathetic activity is correlated with satellite cell aging and myogenesis via β2-adrenoceptor. Stem Cell Res Ther 2021; 12:505. [PMID: 34530910 PMCID: PMC8447727 DOI: 10.1186/s13287-021-02571-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 08/26/2021] [Indexed: 02/09/2023] Open
Abstract
Background and objective Sympathetic activity plays an important role in the proliferation and differentiation of stem cells, and it changes over time, thereby exerting differential effects on various stem cell types. Aging causes sympathetic hyperactivity in aged tissues and blunts sympathetic nerves regulation, and sympathetic abnormalities play a role in aging-related diseases. Currently, the effect of sympathetic activity on skeletal muscle stem cells, namely satellite cells (SCs), is unclear. This study aimed to investigate the effects of skeletal muscle sympathetic activity on SC aging and skeletal muscle repair. Materials and methods To evaluate skeletal muscle and fibrotic areas, numbers of SCs and myonuclei per muscle fiber, β2-adrenoceptor (β2-ADR) expression, muscle repair, and sympathetic innervation in skeletal muscle, aged mice, young mice that underwent chemical sympathectomy (CS) were utilized. Mice with a tibialis anterior muscle injury were treated by barium chloride (BaCl2) and clenbuterol (CLB) in vivo. SCs or C2C12 cells were differentiated into myotubes and treated with or without CLB. Immunofluorescence, western blot, sirius red, and hematoxylin–eosin were used to evaluate SCs, myogenic repair and differentiation. Results The number of SCs, sympathetic activity, and reparability of muscle injury in aged mice were significantly decreased, compared with those in young mice. The above characteristics of young mice that underwent CS were similar to those of aged mice. While CLB promoted the repair of muscle injury in aged and CS mice and ameliorated the reduction in the SC number and sympathetic activity, the effects of CLB on the SCs and sympathetic nerves in young mice were not significant. CLB inhibited the myogenic differentiation of C2C12 cells in vitro. We further found that NF-κB and ERK1/2 signaling pathways were activated during myogenic differentiation, and this process could be inhibited by CLB. Conclusion Normal sympathetic activity promoted the stemness of SCs to thereby maintain a steady state. It also could maintain total and self-renewing number of SCs and maintain a quiescent state, which was correlated with skeletal SCs via β2-ADR. Normal sympathetic activity was also beneficial for the myogenic repair of injured skeletal muscle. Supplementary Information The online version contains supplementary material available at 10.1186/s13287-021-02571-8.
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Affiliation(s)
- Shiguo Yuan
- Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Center for Orthopaedic Surgery, The Third Affiliated Hospital, Southern Medical University, Guangzhou, 510630, China.,Department of Orthopaedic Surgery, Hainan Province Hospital of Traditional Chinese Medicine, Haikou, 570203, China
| | - Sheng Zheng
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China
| | - Kai Zheng
- School of Basic Medical Sciences, Youjiang Medical University for Nationalities, Baise, 533000, China
| | - Yanping Gao
- Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Center for Orthopaedic Surgery, The Third Affiliated Hospital, Southern Medical University, Guangzhou, 510630, China
| | - Meixiong Chen
- Department of Orthopaedic Surgery, Hainan Province Hospital of Traditional Chinese Medicine, Haikou, 570203, China
| | - Yikai Li
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China.
| | - Xiaochun Bai
- Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Center for Orthopaedic Surgery, The Third Affiliated Hospital, Southern Medical University, Guangzhou, 510630, China.
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