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Yang S, Yang N, Huang X, Li Y, Liu G, Jansen CA, Savelkoul HFJ, Liu G. Pigs' intestinal barrier function is more refined with aging. Dev Comp Immunol 2022; 136:104512. [PMID: 35995250 DOI: 10.1016/j.dci.2022.104512] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 08/09/2022] [Accepted: 08/09/2022] [Indexed: 06/15/2023]
Abstract
The high mortality upon enteric virus infection in piglets causes huge economic losses. To control these infections, potential causes for this high susceptibility for enteric virus infections in younger piglets were analyzed by comparing the intestinal barrier between 1-week, 2-week and 4-week-old piglets. In this study, histological staining was used to analyze morphological differences in intestinal villi, real-time qPCR was performed to assess mRNA expression levels of genes that were related to viral infection and differentiation of immune cells, and flow cytometry was utilized to measure the frequencies of T cells. According to the results obtained, 1-week-old piglets have intestinal villi with shallower crypts, less well developed epithelial cells and a more immature immune system compared to older pigs. Moreover, high amounts of enteric virus invasion-assisting proteins but low amounts of resistant proteins in 1-week piglets could also be a reason for the high susceptibility of 1-week-old piglets.
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Affiliation(s)
- Shanshan Yang
- State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, 730046, China; Cell Biology and Immunology Group, Wageningen University and Research, Wageningen, the Netherlands
| | - Ning Yang
- State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, 730046, China; Molecular and Cellular Epigenetics (GIGA) and Molecular Biology (TERRA), University of Liege, Belgium
| | - Xin Huang
- State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, 730046, China
| | - Yang Li
- State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, 730046, China; Molecular and Cellular Epigenetics (GIGA) and Molecular Biology (TERRA), University of Liege, Belgium
| | - Guo Liu
- State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, 730046, China
| | - Christine A Jansen
- Cell Biology and Immunology Group, Wageningen University and Research, Wageningen, the Netherlands
| | - Huub F J Savelkoul
- Cell Biology and Immunology Group, Wageningen University and Research, Wageningen, the Netherlands
| | - Guangliang Liu
- State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, 730046, China.
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Liu JY, He D, Xing YF, Zeng W, Ren K, Zhang C, Lu Y, Yang S, Ou SJ, Wang Y, Xing XH. Effects of bioactive components of Pu-erh tea on gut microbiomes and health: A review. Food Chem 2021; 353:129439. [PMID: 33743430 DOI: 10.1016/j.foodchem.2021.129439] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 02/19/2021] [Accepted: 02/21/2021] [Indexed: 12/20/2022]
Abstract
Pu-erh tea is a post-fermentation tea with unique flavor and multiple health benefits. Due to the various microorganisms involved in the post-fermentation process, Pu-erh tea contains highly complex components, which have rich interactions with the gut microbiomes (GMs). Because the structure and homeostasis of GMs are closely related to human wellness and the various diseases progress, the beneficial effects of Pu-erh tea on GMs have a great potential for application in health care. However, there is no systematic summary of the bioactive components of Pu-erh tea, and their effects on the GMs. Here, we review the current studies on the effects of Pu-erh tea and its bioactive components on the structure of GMs as well as on health improvement, and further discuss the relevant quality indicators. This "components - function - indicators" clue will hopefully stimulate the standardization of Pu-erh tea fermentation process and the development of its functional products.
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Motoori M, Tanaka K, Sugimura K, Miyata H, Saito T, Miyazaki Y, Fujitani K, Kado Y, Asahara T, Yano M. Impact of preoperative fecal short chain fatty acids on postoperative infectious complications in esophageal cancer patients. BMC Gastroenterol 2020; 20:74. [PMID: 32178628 PMCID: PMC7075004 DOI: 10.1186/s12876-020-01217-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 03/04/2020] [Indexed: 12/05/2022] Open
Abstract
Background The intestinal epithelial barrier allows absorption of dietary nutrients and prevents passage of pathogens and toxins into the body. Severe insults have a negative impact on the intestinal environment, which may decrease intestinal barrier function and cause bacterial translocation. Bacterial translocation, which can cause infectious complications, is defined as the passage of microbes from the gastrointestinal tract across the mucosal barrier to extraintestinal sites. The aim of this study was to investigate the correlation between concentrations of preoperative fecal organic acids and the occurrence of postoperative infectious complications in patients with esophageal cancer. Methods Fifty-five patients with esophageal cancer who underwent esophagectomy were enrolled in this study. Perioperative synbiotics were administered to all patients. Perioperative clinical characteristics and concentrations of preoperative fecal organic acids were compared between patients with and without postoperative infectious complications. Results Postoperative infectious complications occurred in 10 patients. In patients with complications, the concentrations of acetic acid and propionic acid were significantly lower than in patients without complications (p = 0.044 and 0.032, respectively). The concentration of butyric acid was nonsignificantly lower in patients with complications, while the concentration of lactic acid was nonsignificantly higher. The calculated gap between the concentrations of fecal acetic acid plus propionic acid plus butyric acid minus lactic acid was significantly lower in patients with complications. Multivariate analysis revealed that a low gap between acetic acid plus propionic acid plus butyric acid minus lactic acid was an independent risk factor for postoperative infectious complications (p = 0.027). Conclusions Preoperative fecal concentrations of organic acids had a clinically important impact on the occurrence of postoperative infectious complications in patients with esophageal cancer. To reduce postoperative infectious complications, it may be useful to modulate the intestinal environment and maintain concentrations of fecal organic acids before surgery.
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Affiliation(s)
- Masaaki Motoori
- Department of Surgery, Osaka International Cancer Institute, 3-1-69 Otemae, Osaka, Chuo-ku, 541-8567, Japan. .,Department of Surgery, Osaka General Medical Center, 3-1-56 Bandai-higashi, Osaka, 558-8558, Japan.
| | - Koji Tanaka
- Department of Surgery, Osaka International Cancer Institute, 3-1-69 Otemae, Osaka, Chuo-ku, 541-8567, Japan.,Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka Suita, Osaka, 565-0875, Japan
| | - Keijiro Sugimura
- Department of Surgery, Osaka International Cancer Institute, 3-1-69 Otemae, Osaka, Chuo-ku, 541-8567, Japan
| | - Hiroshi Miyata
- Department of Surgery, Osaka International Cancer Institute, 3-1-69 Otemae, Osaka, Chuo-ku, 541-8567, Japan
| | - Takuro Saito
- Department of Surgery, Osaka International Cancer Institute, 3-1-69 Otemae, Osaka, Chuo-ku, 541-8567, Japan.,Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka Suita, Osaka, 565-0875, Japan
| | - Yasuhiro Miyazaki
- Department of Surgery, Osaka General Medical Center, 3-1-56 Bandai-higashi, Osaka, 558-8558, Japan
| | - Kazumasa Fujitani
- Department of Surgery, Osaka General Medical Center, 3-1-56 Bandai-higashi, Osaka, 558-8558, Japan
| | - Yukiko Kado
- Yakult Central Institute, 1796 Yaho, Kunitachi, Tokyo, 186-8650, Japan
| | - Takashi Asahara
- Yakult Central Institute, 1796 Yaho, Kunitachi, Tokyo, 186-8650, Japan
| | - Masahiko Yano
- Department of Surgery, Osaka International Cancer Institute, 3-1-69 Otemae, Osaka, Chuo-ku, 541-8567, Japan
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Chen Y, Zhao B, Wu Y, Hu S, Mu L, Zhu C, Pan Y, Wu X. Impacts of diarrhea on the immune system, intestinal environment, and expression of PGRPs in New Zealand rabbits. PeerJ 2017; 5:e4100. [PMID: 29201570 PMCID: PMC5708184 DOI: 10.7717/peerj.4100] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 11/06/2017] [Indexed: 01/22/2023] Open
Abstract
Diarrhea is a syndrome of digestive disorders in young rabbits and may lead to secondary infections resulting in reduced immunity and higher mortality in baby rabbits, with serious impacts on rabbit farming. In this study, we investigated the effects of diarrhea on the health of baby rabbits in terms of intestinal mucosal development, immune function, and intestinal microbial diversity. We found that the duodenal villus length and the villus/crypt ratio in rabbits with diarrhea were significantly reduced compared with those in healthy rabbits (P < 0.01). Rabbits with diarrhea had significantly lower concentrations of acetic acid (P < 0.05), higher pH levels (P < 0.05), and higher levels of ammonia nitrogen (P < 0.01) in the cecum. Moreover, diarrhea in baby rabbits led to significantly reduced levels of total serum protein (P < 0.05) and markedly increased levels of alkaline phosphatase, urea nitrogen, TNF-α, and IL-6 (P < 0.05). Transcriptional analysis of peptidoglycan recognition proteins (PGRPs, including PGLYRP-1, PGLYRP-2, and PGLYRP-3) using real-time PCR revealed that diarrhea induced the upregulation of PGRPs in the cecum and duodenum. Furthermore, through pyrosequencing of the 16S rRNA V4 region in cecum samples, we found that the total number and diversity of microbes were not significantly different between healthy rabbits and those with diarrhea, though there were noticeable differences in the prevalences of Clostridium, Roseburia, and Alistipes. Our results will contribute to a better understanding of the pathological mechanisms of diarrhea in young rabbits.
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Affiliation(s)
- Yang Chen
- College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu, China
| | - Bohao Zhao
- College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu, China
| | - Yuwei Wu
- Yangzhou University, College of Veterinary Medicine, Yangzhou, Jiangsu, China
| | - Shuaishuai Hu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu, China
| | - Lin Mu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu, China
| | - Cigen Zhu
- Jinling Rabbit Farm, Nanjing, Jiangsu, China
| | - Yulai Pan
- Jinling Rabbit Farm, Nanjing, Jiangsu, China
| | - Xinsheng Wu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu, China
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Sant'Anna MRV, Soares AC, Araujo RN, Gontijo NF, Pereira MH. Triatomines (Hemiptera, Reduviidae) blood intake: Physical constraints and biological adaptations. J Insect Physiol 2017; 97:20-26. [PMID: 27521585 DOI: 10.1016/j.jinsphys.2016.08.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Revised: 08/05/2016] [Accepted: 08/09/2016] [Indexed: 06/06/2023]
Abstract
In order to efficiently obtain blood from their vertebrate hosts, bloodsucking arthropods have undergone an evolutionary selection process leading to specialist adaptations in their feeding apparatus (mouthparts and suction pumps) and salivary molecules. These adaptations act to counteract haemostasis, inflammation, and immune responses in their vertebrate hosts. The association of haematophagous arthropods with vertebrate hosts during a blood feed allows the transmission of pathogens between their hosts and vectors in a tripartite interaction. Feeding mechanisms in haematophagous arthropod species have been the subject of studies over at least eight decades worldwide, as a consequence of the importance of vector-borne diseases and their impact on human health. Here we review studies of the feeding mechanisms of triatomine bugs, with a particular focus on factors that influence their feeding performance when obtaining a blood meal from different vertebrate hosts.
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Affiliation(s)
- Maurício Roberto Viana Sant'Anna
- Laboratório de Fisiologia de Insetos Hematófagos, Departamento de Parasitologia, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Campus Pampulha, Belo Horizonte CEP 31270-901, Brazil
| | - Adriana Coelho Soares
- Laboratório de Fisiologia de Insetos Hematófagos, Departamento de Parasitologia, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Campus Pampulha, Belo Horizonte CEP 31270-901, Brazil
| | - Ricardo Nascimento Araujo
- Laboratório de Fisiologia de Insetos Hematófagos, Departamento de Parasitologia, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Campus Pampulha, Belo Horizonte CEP 31270-901, Brazil
| | - Nelder Figueiredo Gontijo
- Laboratório de Fisiologia de Insetos Hematófagos, Departamento de Parasitologia, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Campus Pampulha, Belo Horizonte CEP 31270-901, Brazil
| | - Marcos Horácio Pereira
- Laboratório de Fisiologia de Insetos Hematófagos, Departamento de Parasitologia, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Campus Pampulha, Belo Horizonte CEP 31270-901, Brazil.
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Nakata T, Kyoui D, Takahashi H, Kimura B, Kuda T. Inhibitory effects of laminaran and alginate on production of putrefactive compounds from soy protein by intestinal microbiota in vitro and in rats. Carbohydr Polym 2016; 143:61-9. [PMID: 27083344 DOI: 10.1016/j.carbpol.2016.01.064] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Revised: 01/25/2016] [Accepted: 01/28/2016] [Indexed: 02/08/2023]
Abstract
Soybean is one of the major components of the Japanese diet. In traditional Japanese cuisine, soybean-based food items are often consumed with brown algae. In this study, we examined the effect of water-soluble and fermentable polysaccharides, laminaran and sodium alginate, from brown algae, on putrefactive compound production, by human faecal microbiota in broth containing 3% (w/v) soy protein. We also investigated the effect of 2% laminaran or alginate diet on caecal putrefactive compounds in rats maintained on diets containing 20% (w/w) soy protein. The caecal microbiota was also analysed using denaturing gradient gel electrophoresis and pyrosequencing with primers targeting the bacterial 16S rRNA gene. The polysaccharides, particularly laminaran, inhibited ammonia, phenol, and indole production by human faecal microbiota. Both the algal polysaccharides lowered the caecal indole content. Laminaran was found to increase the number of Coprobacter, whereas Helicobacter was found to decrease in the presence of both laminaran and sodium alginate.
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Affiliation(s)
- Toru Nakata
- Department of Food Science and Technology, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato-city, Tokyo 108-8477, Japan
| | - Daisuke Kyoui
- Department of Food Science and Technology, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato-city, Tokyo 108-8477, Japan
| | - Hajime Takahashi
- Department of Food Science and Technology, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato-city, Tokyo 108-8477, Japan
| | - Bon Kimura
- Department of Food Science and Technology, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato-city, Tokyo 108-8477, Japan
| | - Takashi Kuda
- Department of Food Science and Technology, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato-city, Tokyo 108-8477, Japan.
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Abstract
Inflammatory bowel disease (IBD), including ulcerative colitis (UC) and Crohn's disease (CD), is a chronic non-specific inflammatory condition of the gastrointestinal tract with unknown etiology. During the exploration of the etiology, treatment and other aspects of IBD, it has been gradually realized that microbial ecological agents (MEAs) are helpful in the treatment of IBD. This article reviews the relationship between MEAs and IBD with regard to the intestinal environment in IBD, the therapeutic effect of MEA in IBD and the possible mechanisms involved.
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Abstract
AIM: To explore the relationship between changes of intestinal environment and pathogenesis of non-alcoholic steatohepatitis (NASH).
METHODS: Forty-two Sprague-Dawley rats were randomly divided into model group (n = 24), treatment group (n = 12), and control group (n = 6). The rats of model and treatment groups were given high-fat diet, and those of the control group were given normal diet. Furthermore, the rats of treatment group were given lactulose after 8 wk of high-fat diet. Twelve rats of the model group were killed at 8 wk of high-fat diet. At the 16 wk the rats of treatment group, control group, and the rest of the model group were killed. The serum levels of aminotransferase were measured and the histology of livers was observed by H&E staining.
RESULTS: The livers of rats presented the pathological features of steatohepatitis with higher serum levels of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) in the model group after 16 wk. Compared to the model group, the serum levels of ALT and AST in treatment group decreased significantly and were close to the normal group, and the hepatic inflammation scores also decreased markedly than those in the model group after 16 wk (5.83±2.02 vs 3.63±0.64, P<0.05), but were still higher than those in the model group after 8 wk (3.63±0.64 vs 1.98±0.90, P<0.05). However, the degree of hepatic steatosis had no changes in treatment group compared to the model group after 16 wk.
CONCLUSION: Lactulose could ameliorate the hepatic inflammation of rats with steatohepatitis induced by fat-rich diet, but could not completely prevent the development of steatohepatitis. It is suggested that intestinal environmental changes such as intestinal bacteria overgrowth, are one of the important factors in the pathogenesis of NASH.
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Affiliation(s)
- Jian-Gao Fan
- Department of Gastroenterology, Shanghai First People's Hospital, Jiaotong University, Shanghai 200080, China.
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