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Zhu J, Li X, Huang M, Zhu H, Tan Y, He X, Sun Z, Cheng H, Li F, Jiang P, Lou H, Ke G, Cao X, Zhu L, Xie P, Yan J, Zhang F. Application of Recombinant Human Superoxide Dismutase in Radical Concurrent Chemoradiotherapy for Cervical Cancer to Prevent and Treat Radiation-induced Acute Rectal Injury: A Multicenter, Randomized, Open-label, Prospective Trial. Int J Radiat Oncol Biol Phys 2024:S0360-3016(24)00611-4. [PMID: 38705489 DOI: 10.1016/j.ijrobp.2024.04.070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 03/25/2024] [Accepted: 04/25/2024] [Indexed: 05/07/2024]
Abstract
PURPOSE The purpose of this study was to evaluate the efficacy of recombinant human superoxide dismutase (rhSOD) enemas in radiation-induced acute rectal injury (RARI) in patients with locally advanced cervical cancer. METHODS AND MATERIALS In this phase 3, randomized, open-label trial (NCT04819685) conducted across 14 medical centers in China from June 2021 to August 2023, all patients received concurrent chemoradiation therapy (CCRT). The experimental group was treated with a rhSOD enema during chemoradiation therapy, and the control group had no enema. The Common Terminology Criteria for Adverse Events (version 5.0) was used to evaluate radiation therapy-induced side effects. Endoscopic appearance was assessed using the Vienna Rectoscopy Score. The primary endpoint in the acute phase was the occurrence rate and duration of grade ≥1 (≥G1) diarrhea during CCRT. Secondary endpoints included the occurrence rate and duration of ≥G2 and ≥G3 diarrhea, ≥G1 and ≥G2 diarrhea lasting at least 3 days, and damage to the rectal mucosa due to radiation therapy measured by endoscopy. RESULTS Two hundred and eighty-three patients were randomly divided into the experimental (n = 141) or control group (n = 142). The mean number of ≥G1 and ≥G2 diarrhea days were significantly lower in the experimental group than in the control group (3.5 and 0.8 days vs 14.8 and 4.5 days, respectively; P < .001). The incidence of ≥G2 diarrhea decreased from 53.6% to 24.1% when rhSOD enemas were used. Use of antidiarrheals was lower in the experimental group (36.2% vs 55.7%, P < .001). Three patients felt intolerable or abdominal pain after rhSOD enema. RARI grades in the experimental group tended to be lower than those in the control group (P = .061). Logistic regression analysis revealed that rhSOD enema was associated with a lower occurrence rate of ≥G1/2 diarrhea for at least 3 days (P < .001). CONCLUSIONS The results of this study suggest that rhSOD enema is safe and significantly reduces the incidence, severity, and duration of RARI, protecting the rectal mucosa.
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Affiliation(s)
- Jiawei Zhu
- Department of Radiation Oncology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Xiaofan Li
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Manni Huang
- Department of Gynecological Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hong Zhu
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, Hunan, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yan Tan
- Radiation Oncology Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China
| | - Xia He
- Department of Radiation Oncology, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
| | - Zhihua Sun
- Department of Radiation Oncology, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
| | - Huijun Cheng
- Department of Gynecologic Oncology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan, China
| | - Fenghu Li
- Department of Oncology, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Ping Jiang
- Department of Radiation Oncology, Peking University Third Hospital, Beijing, China
| | - Hanmei Lou
- Department of Gynecological Oncology, Zhejiang Cancer Hospital, Hangzhou, China
| | - Guihao Ke
- Department of Gynecologic Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Xinping Cao
- Department of Radiation Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Lihong Zhu
- Radiotherapy Center, Beijing Obstetrics and Gynecology Hospital, Capital Medical University. Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - Peng Xie
- Department of Gynecologic Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Junfang Yan
- Department of Radiation Oncology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China.
| | - Fuquan Zhang
- Department of Radiation Oncology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China.
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Xie LW, Lu HY, Tang LF, Tang FL, Zhu RQ, Wang DF, Cai S, Tian Y, Li M. Probiotic Consortia Protect the Intestine Against Radiation Injury by Improving Intestinal Epithelial Homeostasis. Int J Radiat Oncol Biol Phys 2024:S0360-3016(24)00395-X. [PMID: 38485099 DOI: 10.1016/j.ijrobp.2024.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 02/25/2024] [Accepted: 03/02/2024] [Indexed: 04/14/2024]
Abstract
PURPOSE Radiation-induced intestinal injury (RIII) commonly occur during abdominal-pelvic cancer radiation therapy; however, no effective prophylactic or therapeutic agents are available to manage RIII currently. This study aimed to clarify the potential of probiotic consortium supplementation in alleviating RIII. METHODS AND MATERIALS Male C57BL/6J mice were orally administered a probiotic mixture comprising Bifidobacterium longum BL21, Lactobacillus paracasei LC86, and Lactobacillus plantarum Lp90 for 30 days before exposure to 13 Gy of whole abdominal irradiation. The survival rates, clinical scores, and histologic changes in the intestines of mice were assessed. The impacts of probiotic consortium treatment on intestinal stem cell proliferation, differentiation, and epithelial barrier function; oxidative stress; and inflammatory cytokines were evaluated. A comprehensive examination of the gut microbiota composition was conducted through 16S rRNA sequencing, while changes in metabolites were identified using liquid chromatography-mass spectrometry. RESULTS The probiotic consortium alleviated RIII, as reflected by increased survival rates, improved clinical scores, and mitigated mucosal injury. The probiotic consortium treatment exhibited enhanced therapeutic effects at the histologic level compared with individual probiotic strains, although there was no corresponding improvement in survival rates and colon length. Moreover, the probiotic consortium stimulated intestinal stem cell proliferation and differentiation, enhanced the integrity of the intestinal epithelial barrier, and regulated redox imbalance and inflammatory responses in irradiated mice. Notably, the treatment induced a restructuring of the gut microbiota composition, particularly enriching short-chain fatty acid-producing bacteria. Metabolomic analysis revealed distinctive metabolic changes associated with the probiotic consortium, including elevated levels of anti-inflammatory and antiradiation metabolites. CONCLUSIONS The probiotic consortium attenuated RIII by modulating the gut microbiota and metabolites, improving inflammatory symptoms, and regulating oxidative stress. These findings provide new insights into the maintenance of intestinal health with probiotic consortium supplementation and will facilitate the development of probiotic-based therapeutic strategies for RIII in clinical practice.
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Affiliation(s)
- Li-Wei Xie
- Department of Radiotherapy and Oncology, Second Affiliated Hospital of Soochow University, Suzhou, China; Institute of Radiotherapy and Oncology, Soochow University, Suzhou, China
| | - Hai-Yan Lu
- Department of Radiotherapy and Oncology, Second Affiliated Hospital of Soochow University, Suzhou, China; Institute of Radiotherapy and Oncology, Soochow University, Suzhou, China
| | - Lin-Feng Tang
- Department of Radiotherapy and Oncology, Second Affiliated Hospital of Soochow University, Suzhou, China; State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, China
| | - Feng-Ling Tang
- Department of Radiotherapy and Oncology, Second Affiliated Hospital of Soochow University, Suzhou, China; Institute of Radiotherapy and Oncology, Soochow University, Suzhou, China
| | - Rui-Qiu Zhu
- Department of Radiotherapy and Oncology, Second Affiliated Hospital of Soochow University, Suzhou, China; Institute of Radiotherapy and Oncology, Soochow University, Suzhou, China
| | - Di-Fan Wang
- Medical College of Soochow University, Suzhou, China
| | - Shang Cai
- Department of Radiotherapy and Oncology, Second Affiliated Hospital of Soochow University, Suzhou, China; Institute of Radiotherapy and Oncology, Soochow University, Suzhou, China
| | - Ye Tian
- Department of Radiotherapy and Oncology, Second Affiliated Hospital of Soochow University, Suzhou, China; Institute of Radiotherapy and Oncology, Soochow University, Suzhou, China.
| | - Ming Li
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, China.
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Schreiber F, Balas I, Robinson MJ, Bakdash G. Border Control: The Role of the Microbiome in Regulating Epithelial Barrier Function. Cells 2024; 13:477. [PMID: 38534321 DOI: 10.3390/cells13060477] [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: 02/16/2024] [Revised: 03/01/2024] [Accepted: 03/03/2024] [Indexed: 03/28/2024] Open
Abstract
The gut mucosal epithelium is one of the largest organs in the body and plays a critical role in regulating the crosstalk between the resident microbiome and the host. To this effect, the tight control of what is permitted through this barrier is of high importance. There should be restricted passage of harmful microorganisms and antigens while at the same time allowing the absorption of nutrients and water. An increased gut permeability, or "leaky gut", has been associated with a variety of diseases ranging from infections, metabolic diseases, and inflammatory and autoimmune diseases to neurological conditions. Several factors can affect gut permeability, including cytokines, dietary components, and the gut microbiome. Here, we discuss how the gut microbiome impacts the permeability of the gut epithelial barrier and how this can be harnessed for therapeutic purposes.
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Park HY, Yu JH. Mitigation effect of hesperidin on X-ray radiation-induced intestinal barrier dysfunction in Caco-2 cell monolayers. Food Chem Toxicol 2024; 186:114549. [PMID: 38442786 DOI: 10.1016/j.fct.2024.114549] [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: 12/05/2023] [Revised: 02/18/2024] [Accepted: 02/25/2024] [Indexed: 03/07/2024]
Abstract
The tight junctions (TJs) and barrier function of the intestinal epithelium are highly sensitive to radiation. However, polyphenols can be used to reverse the effects of radiation. Here, we investigated the effects of hesperidin (hesperetin-7-rhamnoglucoside) on X-ray-induced intestinal barrier dysfunction in human epithelial Caco-2 monolayers. To examine whether hesperidin mitigated the effects of X-ray exposure (2 Gy), cell survival was evaluated and intestinal barrier function was assessed by measuring the transepithelial flux, apparent permeability coefficient (Papp), and barrier integrity. Hesperidin improved the survival of Caco-2 cell monolayers and attenuated X-ray exposure-induced intestinal barrier dysfunction. For fluorescein transport experiments, transepithelial flux and Papp of fluorescein in control group were significantly elevated by X-ray, but were restored to near control by 10 μM hesperidin pretreatment. Further, X-ray exposure decreased the barrier integrity and TJ interruption by reducing TJ-related proteins occludin and claudin-4, whereas cell monolayers pretreated with hesperidin before X-ray exposure were reinstated to control level. It was concluded that hesperidin treatment before X-ray exposure alleviated X-ray-induced intestinal barrier dysfunction through regulation of TJ-related proteins. These results indicate that hesperidin prevents and mitigates X-ray-induced intestinal barrier dysfunction.
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Affiliation(s)
- Ha-Young Park
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, 56212, Republic of Korea.
| | - Jin-Hee Yu
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, 56212, Republic of Korea
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Markov AG, Livanova AA, Fedorova AA, Kravtsova VV, Krivoi II. Chronic Ouabain Targets Pore-Forming Claudin-2 and Ameliorates Radiation-Induced Damage to the Rat Intestinal Tissue Barrier. Int J Mol Sci 2023; 25:278. [PMID: 38203449 PMCID: PMC10778734 DOI: 10.3390/ijms25010278] [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: 11/04/2023] [Revised: 12/15/2023] [Accepted: 12/21/2023] [Indexed: 01/12/2024] Open
Abstract
Ionizing radiation (IR) causes disturbances in the functions of the gastrointestinal tract. Given the therapeutic potential of ouabain, a specific ligand of the Na,K-ATPase, we tested its ability to protect against IR-induced disturbances in the barrier and transport properties of the jejunum and colon of rats. Male Wistar rats were subjected to 6-day intraperitoneal injections of vehicle or ouabain (1 µg/kg/day). On the fourth day of injections, rats were exposed to total-body X-ray irradiation (10 Gy) or a sham irradiation. Isolated tissues were examined 72 h post-irradiation. Electrophysiological characteristics and paracellular permeability for sodium fluorescein were measured in an Ussing chamber. Histological analysis and Western blotting were also performed. In the jejunum tissue, ouabain exposure did not prevent disturbances in transepithelial resistance, paracellular permeability, histological characteristics, as well as changes in the expression of claudin-1, -3, -4, tricellulin, and caspase-3 induced by IR. However, ouabain prevented overexpression of occludin and the pore-forming claudin-2. In the colon tissue, ouabain prevented electrophysiological disturbances and claudin-2 overexpression. These observations may reveal a mechanism by which circulating ouabain maintains tight junction integrity under IR-induced intestinal dysfunction.
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Affiliation(s)
- Alexander G. Markov
- Department of General Physiology, St. Petersburg State University, 199034 St. Petersburg, Russia; (A.A.L.); (A.A.F.); (V.V.K.); (I.I.K.)
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Lu Q, Liang Y, Tian S, Jin J, Zhao Y, Fan H. Radiation-Induced Intestinal Injury: Injury Mechanism and Potential Treatment Strategies. TOXICS 2023; 11:1011. [PMID: 38133412 PMCID: PMC10747544 DOI: 10.3390/toxics11121011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 12/01/2023] [Accepted: 12/08/2023] [Indexed: 12/23/2023]
Abstract
Radiation-induced intestinal injury (RIII) is one of the most common intestinal complications caused by radiotherapy for pelvic and abdominal tumors and it seriously affects the quality of life of patients. However, the treatment of acute RIII is essentially symptomatic and nutritional support treatment and an ideal means of prevention and treatment is lacking. Researchers have conducted studies at the cellular and animal levels and found that some chemical or biological agents have good therapeutic effects on RIII and may be used as potential candidates for clinical treatment. This article reviews the injury mechanism and potential treatment strategies based on cellular and animal experiments to provide new ideas for the diagnosis and treatment of RIII in clinical settings.
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Affiliation(s)
- Qianying Lu
- Institute of Disaster and Emergency Medicine, Tianjin University, Tianjin 300072, China; (Q.L.); (Y.L.); (S.T.); (J.J.)
- Tianjin Key Laboratory of Disaster Medicine Technology, Tianjin 300072, China
| | - Yangfan Liang
- Institute of Disaster and Emergency Medicine, Tianjin University, Tianjin 300072, China; (Q.L.); (Y.L.); (S.T.); (J.J.)
- Tianjin Key Laboratory of Disaster Medicine Technology, Tianjin 300072, China
| | - Sijia Tian
- Institute of Disaster and Emergency Medicine, Tianjin University, Tianjin 300072, China; (Q.L.); (Y.L.); (S.T.); (J.J.)
- Tianjin Key Laboratory of Disaster Medicine Technology, Tianjin 300072, China
| | - Jie Jin
- Institute of Disaster and Emergency Medicine, Tianjin University, Tianjin 300072, China; (Q.L.); (Y.L.); (S.T.); (J.J.)
- Tianjin Key Laboratory of Disaster Medicine Technology, Tianjin 300072, China
| | - Yanmei Zhao
- Institute of Disaster and Emergency Medicine, Tianjin University, Tianjin 300072, China; (Q.L.); (Y.L.); (S.T.); (J.J.)
- Tianjin Key Laboratory of Disaster Medicine Technology, Tianjin 300072, China
| | - Haojun Fan
- Institute of Disaster and Emergency Medicine, Tianjin University, Tianjin 300072, China; (Q.L.); (Y.L.); (S.T.); (J.J.)
- Tianjin Key Laboratory of Disaster Medicine Technology, Tianjin 300072, China
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Lu H, Yan H, Li X, Xing Y, Ye Y, Jiang S, Ma L, Ping J, Zuo H, Hao Y, Yu C, Li Y, Zhou G, Lu Y. Single-cell map of dynamic cellular microenvironment of radiation-induced intestinal injury. Commun Biol 2023; 6:1248. [PMID: 38071238 PMCID: PMC10710489 DOI: 10.1038/s42003-023-05645-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 11/29/2023] [Indexed: 12/18/2023] Open
Abstract
Intestine is a highly radiation-sensitive organ that could be injured during the radiotherapy for pelvic, abdominal, and retroperitoneal tumors. However, the dynamic change of the intestinal microenvironment related to radiation-induced intestine injury (RIII) is still unclear. Using single-cell RNA sequencing, we pictured a dynamic landscape of the intestinal microenvironment during RIII and regeneration. We showed that the various cell types of intestine exhibited heterogeneous radiosensitivities. We revealed the distinct dynamic patterns of three subtypes of intestinal stem cells (ISCs), and the cellular trajectory analysis suggested a complex interconversion pattern among them. For the immune cells, we found that Ly6c+ monocytes can give rise to both pro-inflammatory macrophages and resident macrophages after RIII. Through cellular communication analysis, we identified a positive feedback loop between the macrophages and endothelial cells, which could amplify the inflammatory response induced by radiation. Besides, we identified different T cell subtypes and revealed their role in immunomodulation during the early stage of RIII through inflammation and defense response relevant signaling pathways. Overall, our study provides a valuable single-cell map of the multicellular dynamics during RIII and regeneration, which may facilitate the understanding of the mechanism of RIII.
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Affiliation(s)
- Hao Lu
- Beijing Institute of Radiation Medicine, Beijing, 100850, China
| | - Hua Yan
- Beijing Institute of Radiation Medicine, Beijing, 100850, China
| | - Xiaoyu Li
- Beijing Institute of Radiation Medicine, Beijing, 100850, China
| | - Yuan Xing
- Beijing Institute of Radiation Medicine, Beijing, 100850, China
| | - Yumeng Ye
- Beijing Institute of Radiation Medicine, Beijing, 100850, China
| | - Siao Jiang
- Beijing Institute of Radiation Medicine, Beijing, 100850, China
- College of Life Sciences, Hebei University, Baoding City, Hebei Province, 071002, China
| | - Luyu Ma
- Beijing Institute of Radiation Medicine, Beijing, 100850, China
| | - Jie Ping
- Beijing Institute of Radiation Medicine, Beijing, 100850, China
| | - Hongyan Zuo
- Beijing Institute of Radiation Medicine, Beijing, 100850, China
| | - Yanhui Hao
- Beijing Institute of Radiation Medicine, Beijing, 100850, China
| | - Chao Yu
- Beijing Institute of Radiation Medicine, Beijing, 100850, China
| | - Yang Li
- Beijing Institute of Radiation Medicine, Beijing, 100850, China.
- Academy of Life Sciences, Anhui Medical University, Hefei City, Anhui Province, 230032, China.
| | - Gangqiao Zhou
- Beijing Institute of Radiation Medicine, Beijing, 100850, China.
- Collaborative Innovation Center for Personalized Cancer Medicine, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing City, Jiangsu Province, 211166, China.
| | - Yiming Lu
- Beijing Institute of Radiation Medicine, Beijing, 100850, China.
- College of Life Sciences, Hebei University, Baoding City, Hebei Province, 071002, China.
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Park HY, Yu JH. X-ray radiation-induced intestinal barrier dysfunction in human epithelial Caco-2 cell monolayers. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 264:115404. [PMID: 37625335 DOI: 10.1016/j.ecoenv.2023.115404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 08/18/2023] [Accepted: 08/21/2023] [Indexed: 08/27/2023]
Abstract
Radiation therapy and unwanted radiological or nuclear exposure, such as nuclear plant accidents, terrorist attacks, and military conflicts, pose serious health issues to humans. Dysfunction of the intestinal epithelial barrier and the leakage of luminal antigens and bacteria across the barrier have been linked to various human diseases. Intestinal permeability is regulated by intercellular structures, termed tight junctions (TJs), which are disrupted after radiation exposure. In this study, we investigated radiation-induced alterations in TJ-related proteins in an intestinal epithelial cell model. Caco-2 cells were irradiated with 2, 5, and 10 Gy and harvested 1 and 24 h after X-ray exposure. The trypan blue assay revealed that cell viability was reduced in a dose-dependent manner 24 h after X-ray exposure compared to that of non-irradiated cells. However, the WST-8 assay revealed that cell proliferation was significantly reduced only 24 h after radiation exposure to 10 Gy compared to that of non-irradiated cells. In addition, a decreased growth rate and increased doubling time were observed in cells irradiated with X-rays. Intestinal permeability was significantly increased, and transepithelial electrical resistance values were remarkably reduced in Caco-2 cell monolayers irradiated with X-rays compared to non-irradiated cells. X-ray irradiation significantly decreased the mRNA and protein levels of ZO-1, occludin, claudin-3, and claudin-4, with ZO-1 and claudin-3 protein levels decreasing in a dose-dependent manner. Overall, the present study reveals that exposure to X-ray induces dysfunction of the human epithelial intestinal barrier and integrity via the downregulation of TJ-related genes, which may be a key factor contributing to intestinal barrier damage and increased intestinal permeability.
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Affiliation(s)
- Ha-Young Park
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup 56212, Republic of Korea.
| | - Jin-Hee Yu
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup 56212, Republic of Korea
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Hu J, Ding R, Liu S, Wang J, Li J, Shang Y. Hypermethylation of RNF125 promotes autophagy-induced oxidative stress in asthma by increasing HMGB1 stability. iScience 2023; 26:107503. [PMID: 37599832 PMCID: PMC10432822 DOI: 10.1016/j.isci.2023.107503] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 05/08/2023] [Accepted: 07/26/2023] [Indexed: 08/22/2023] Open
Abstract
Asthma is a global chronic airway disease. The expression and role of RNF125, an E3 ubiquitin ligase, in asthma remain uncertain. In this study, we revealed that RNF125 was downregulated in the bronchial epithelium of mice and patients with asthma. Rnf125 hypermethylation was responsible for the low expression of RNF125 in primary airway epithelial cells of mice treated with OVA. Moreover, we demonstrated that RNF125 could attenuate autophagy, oxidative stress, and protect epithelial barrier in vivo and in vitro. Additionally, we identified HMGB1 as a substrate of RNF125, which interacted with the HMG B-box domain of HMGB1 and induced degradation via the ubiquitin proteasome system, reducing autophagy and oxidative stress. Overall, our findings elucidated that hypermethylation of Rnf125 reduced its expression, which promoted autophagy-induced oxidative stress in asthma by increasing HMGB1 stability. These findings offer a theoretical and experimental basis for the pathogenesis of asthma.
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Affiliation(s)
- Jiapeng Hu
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Ruiwei Ding
- Pediatric Department, Qingdao Women and Children’s Hospital, Qingdao 266000, China
| | - Shaozhuang Liu
- Department of Urology, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Jia Wang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Jianjun Li
- Department of Orthopedics, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Yunxiao Shang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang 110004, China
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Dushime H, Moreno SG, Linard C, Adrait A, Couté Y, Peltzer J, Messiaen S, Torres C, Bensemmane L, Lewandowski D, Romeo PH, Petit V, Gault N. Fetal Muse-based therapy prevents lethal radio-induced gastrointestinal syndrome by intestinal regeneration. Stem Cell Res Ther 2023; 14:201. [PMID: 37568164 PMCID: PMC10416451 DOI: 10.1186/s13287-023-03425-1] [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: 10/21/2022] [Accepted: 07/21/2023] [Indexed: 08/13/2023] Open
Abstract
BACKGROUND Human multilineage-differentiating stress enduring (Muse) cells are nontumorigenic endogenous pluripotent-like stem cells that can be easily obtained from various adult or fetal tissues. Regenerative effects of Muse cells have been shown in some disease models. Muse cells specifically home in damaged tissues where they exert pleiotropic effects. Exposition of the small intestine to high doses of irradiation (IR) delivered after radiotherapy or nuclear accident results in a lethal gastrointestinal syndrome (GIS) characterized by acute loss of intestinal stem cells, impaired epithelial regeneration and subsequent loss of the mucosal barrier resulting in sepsis and death. To date, there is no effective medical treatment for GIS. Here, we investigate whether Muse cells can prevent lethal GIS and study how they act on intestinal stem cell microenvironment to promote intestinal regeneration. METHODS Human Muse cells from Wharton's jelly matrix of umbilical cord (WJ-Muse) were sorted by flow cytometry using the SSEA-3 marker, characterized and compared to bone-marrow derived Muse cells (BM-Muse). Under gas anesthesia, GIS mice were treated or not through an intravenous retro-orbital injection of 50,000 WJ-Muse, freshly isolated or cryopreserved, shortly after an 18 Gy-abdominal IR. No immunosuppressant was delivered to the mice. Mice were euthanized either 24 h post-IR to assess early small intestine tissue response, or 7 days post-IR to assess any regenerative response. Mouse survival, histological stainings, apoptosis and cell proliferation were studied and measurement of cytokines, recruitment of immune cells and barrier functional assay were performed. RESULTS Injection of WJ-Muse shortly after abdominal IR highly improved mouse survival as a result of a rapid regeneration of intestinal epithelium with the rescue of the impaired epithelial barrier. In small intestine of Muse-treated mice, an early enhanced secretion of IL-6 and MCP-1 cytokines was observed associated with (1) recruitment of monocytes/M2-like macrophages and (2) proliferation of Paneth cells through activation of the IL-6/Stat3 pathway. CONCLUSION Our findings indicate that a single injection of a small quantity of WJ-Muse may be a new and easy therapeutic strategy for treating lethal GIS.
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Affiliation(s)
- Honorine Dushime
- Université Paris Cité, Inserm, CEA, Stabilité Génétique Cellules Souches et Radiations, Laboratoire Réparation et Transcription dans les cellules Souches (LRTS), Institut de Radiobiologie Cellulaire et Moléculaire (iRCM), Institut de Biologie François Jacob (IBFJ), CEA, 92260, Fontenay-aux-Roses, France
- Université Paris-Saclay, Inserm, CEA, Stabilité Génétique Cellules Souches et Radiations, LRTS/iRCM/IBFJ, CEA, 92260, Fontenay-aux-Roses, France
| | - Stéphanie G Moreno
- Université Paris Cité, Inserm, CEA, Stabilité Génétique Cellules Souches et Radiations, Laboratoire Réparation et Transcription dans les cellules Souches (LRTS), Institut de Radiobiologie Cellulaire et Moléculaire (iRCM), Institut de Biologie François Jacob (IBFJ), CEA, 92260, Fontenay-aux-Roses, France
- Université Paris-Saclay, Inserm, CEA, Stabilité Génétique Cellules Souches et Radiations, LRTS/iRCM/IBFJ, CEA, 92260, Fontenay-aux-Roses, France
| | - Christine Linard
- Laboratory of Medical Radiobiology, Institute of Radiological Protection and Nuclear Safety, Fontenay-aux-Roses, France
| | - Annie Adrait
- Université Grenoble Alpes, Inserm, CEA, UMR BioSanté U1292, CNRS, FR2048, CEA, 38000, Grenoble, France
| | - Yohann Couté
- Université Grenoble Alpes, Inserm, CEA, UMR BioSanté U1292, CNRS, FR2048, CEA, 38000, Grenoble, France
| | - Juliette Peltzer
- Institut de Recherche Biomédicale des Armées (IRBA), 92141, Clamart, France
- UMR-S-MD 1197, Ministère des Armées et Université Paris Saclay, Villejuif, France
| | - Sébastien Messiaen
- Université Paris Cité, Inserm, CEA, Stabilité Génétique Cellules Souches et Radiations, Laboratoire Réparation et Transcription dans les cellules Souches (LRTS), Institut de Radiobiologie Cellulaire et Moléculaire (iRCM), Institut de Biologie François Jacob (IBFJ), CEA, 92260, Fontenay-aux-Roses, France
- Université Paris-Saclay, Inserm, CEA, Stabilité Génétique Cellules Souches et Radiations, LRTS/iRCM/IBFJ, CEA, 92260, Fontenay-aux-Roses, France
| | - Claire Torres
- Université Paris Cité, Inserm, CEA, Stabilité Génétique Cellules Souches et Radiations, Laboratoire Réparation et Transcription dans les cellules Souches (LRTS), Institut de Radiobiologie Cellulaire et Moléculaire (iRCM), Institut de Biologie François Jacob (IBFJ), CEA, 92260, Fontenay-aux-Roses, France
- Université Paris-Saclay, Inserm, CEA, Stabilité Génétique Cellules Souches et Radiations, LRTS/iRCM/IBFJ, CEA, 92260, Fontenay-aux-Roses, France
| | - Lydia Bensemmane
- Laboratory of Medical Radiobiology, Institute of Radiological Protection and Nuclear Safety, Fontenay-aux-Roses, France
| | - Daniel Lewandowski
- Université Paris Cité, Inserm, CEA, Stabilité Génétique Cellules Souches et Radiations, Laboratoire Réparation et Transcription dans les cellules Souches (LRTS), Institut de Radiobiologie Cellulaire et Moléculaire (iRCM), Institut de Biologie François Jacob (IBFJ), CEA, 92260, Fontenay-aux-Roses, France
- Université Paris-Saclay, Inserm, CEA, Stabilité Génétique Cellules Souches et Radiations, LRTS/iRCM/IBFJ, CEA, 92260, Fontenay-aux-Roses, France
| | - Paul-Henri Romeo
- Université Paris Cité, Inserm, CEA, Stabilité Génétique Cellules Souches et Radiations, Laboratoire Réparation et Transcription dans les cellules Souches (LRTS), Institut de Radiobiologie Cellulaire et Moléculaire (iRCM), Institut de Biologie François Jacob (IBFJ), CEA, 92260, Fontenay-aux-Roses, France
- Université Paris-Saclay, Inserm, CEA, Stabilité Génétique Cellules Souches et Radiations, LRTS/iRCM/IBFJ, CEA, 92260, Fontenay-aux-Roses, France
| | - Vanessa Petit
- Université Paris Cité, Inserm, CEA, Stabilité Génétique Cellules Souches et Radiations, Laboratoire Réparation et Transcription dans les cellules Souches (LRTS), Institut de Radiobiologie Cellulaire et Moléculaire (iRCM), Institut de Biologie François Jacob (IBFJ), CEA, 92260, Fontenay-aux-Roses, France.
- Université Paris-Saclay, Inserm, CEA, Stabilité Génétique Cellules Souches et Radiations, LRTS/iRCM/IBFJ, CEA, 92260, Fontenay-aux-Roses, France.
| | - Nathalie Gault
- Université Paris Cité, Inserm, CEA, Stabilité Génétique Cellules Souches et Radiations, Laboratoire Réparation et Transcription dans les cellules Souches (LRTS), Institut de Radiobiologie Cellulaire et Moléculaire (iRCM), Institut de Biologie François Jacob (IBFJ), CEA, 92260, Fontenay-aux-Roses, France.
- Université Paris-Saclay, Inserm, CEA, Stabilité Génétique Cellules Souches et Radiations, LRTS/iRCM/IBFJ, CEA, 92260, Fontenay-aux-Roses, France.
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Shukla PK, Rao RG, Meena AS, Giorgianni F, Lee SC, Raju P, Shashikanth N, Shekhar C, Beranova S, Balazs L, Tigyi G, Gosain A, Rao R. Paneth cell dysfunction in radiation injury and radio-mitigation by human α-defensin 5. Front Immunol 2023; 14:1174140. [PMID: 37638013 PMCID: PMC10448521 DOI: 10.3389/fimmu.2023.1174140] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Accepted: 07/14/2023] [Indexed: 08/29/2023] Open
Abstract
Introduction The mechanism underlying radiation-induced gut microbiota dysbiosis is undefined. This study examined the effect of radiation on the intestinal Paneth cell α-defensin expression and its impact on microbiota composition and mucosal tissue injury and evaluated the radio-mitigative effect of human α-defensin 5 (HD5). Methods Adult mice were subjected to total body irradiation, and Paneth cell α-defensin expression was evaluated by measuring α-defensin mRNA by RT-PCR and α-defensin peptide levels by mass spectrometry. Vascular-to-luminal flux of FITC-inulin was measured to evaluate intestinal mucosal permeability and endotoxemia by measuring plasma lipopolysaccharide. HD5 was administered in a liquid diet 24 hours before or after irradiation. Gut microbiota was analyzed by 16S rRNA sequencing. Intestinal epithelial junctions were analyzed by immunofluorescence confocal microscopy and mucosal inflammatory response by cytokine expression. Systemic inflammation was evaluated by measuring plasma cytokine levels. Results Ionizing radiation reduced the Paneth cell α-defensin expression and depleted α-defensin peptides in the intestinal lumen. α-Defensin down-regulation was associated with the time-dependent alteration of gut microbiota composition, increased gut permeability, and endotoxemia. Administration of human α-defensin 5 (HD5) in the diet 24 hours before irradiation (prophylactic) significantly blocked radiation-induced gut microbiota dysbiosis, disruption of intestinal epithelial tight junction and adherens junction, mucosal barrier dysfunction, and mucosal inflammatory response. HD5, administered 24 hours after irradiation (treatment), reversed radiation-induced microbiota dysbiosis, tight junction and adherens junction disruption, and barrier dysfunction. Furthermore, HD5 treatment also prevents and reverses radiation-induced endotoxemia and systemic inflammation. Conclusion These data demonstrate that radiation induces Paneth cell dysfunction in the intestine, and HD5 feeding prevents and mitigates radiation-induced intestinal mucosal injury, endotoxemia, and systemic inflammation.
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Affiliation(s)
- Pradeep K. Shukla
- College of Medicine, University of Tennessee Health Science Center, Memphis, TN, United States
| | - Roshan G. Rao
- College of Medicine, University of Tennessee Health Science Center, Memphis, TN, United States
| | - Avtar S. Meena
- College of Medicine, University of Tennessee Health Science Center, Memphis, TN, United States
| | - Francesco Giorgianni
- College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN, United States
| | - Sue Chin Lee
- College of Medicine, University of Tennessee Health Science Center, Memphis, TN, United States
| | - Preeti Raju
- College of Medicine, University of Tennessee Health Science Center, Memphis, TN, United States
| | - Nitesh Shashikanth
- College of Medicine, University of Tennessee Health Science Center, Memphis, TN, United States
| | - Chandra Shekhar
- College of Medicine, University of Tennessee Health Science Center, Memphis, TN, United States
| | - Sarka Beranova
- College of Medicine, University of Tennessee Health Science Center, Memphis, TN, United States
| | - Louisa Balazs
- College of Medicine, University of Tennessee Health Science Center, Memphis, TN, United States
| | - Gabor Tigyi
- College of Medicine, University of Tennessee Health Science Center, Memphis, TN, United States
| | - Ankush Gosain
- College of Medicine, University of Tennessee Health Science Center, Memphis, TN, United States
| | - RadhaKrishna Rao
- College of Medicine, University of Tennessee Health Science Center, Memphis, TN, United States
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Yu Y, Lin X, Feng F, Wei Y, Wei S, Gong Y, Guo C, Wang Q, Shuai P, Wang T, Qin H, Li G, Yi L. Gut microbiota and ionizing radiation-induced damage: Is there a link? ENVIRONMENTAL RESEARCH 2023; 229:115947. [PMID: 37080277 DOI: 10.1016/j.envres.2023.115947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 04/14/2023] [Accepted: 04/17/2023] [Indexed: 05/03/2023]
Abstract
According to observational findings, ionizing radiation (IR) triggers dysbiosis of the intestinal microbiota, affecting the structural composition, function, and species of the gut microbiome and its metabolites. These modifications can further exacerbate IR-induced damage and amplify proinflammatory immune responses. Conversely, commensal bacteria and favorable metabolites can remodel the IR-disturbed gut microbial structure, promote a balance between anti-inflammatory and proinflammatory mechanisms in the body, and mitigate IR toxicity. The discovery of effective and safe remedies to prevent and treat radiation-induced injuries is vitally needed because of the proliferation of radiation toxicity threats produced by recent radiological public health disasters and increasing medical exposures. This review examines how the gut microbiota and its metabolites are linked to the processes of IR-induced harm. We highlight protective measures based on interventions with gut microbes to optimize the distress caused by IR damage to human health. We offer prospects for research in emerging and promising areas targeting the prevention and treatment of IR-induced damage.
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Affiliation(s)
- Yueqiu Yu
- Institute of Cytology and Genetics, The Hengyang Key Laboratory of Cellular Stress Biology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Xiang Lin
- Institute of Cytology and Genetics, The Hengyang Key Laboratory of Cellular Stress Biology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Feiyang Feng
- Institute of Cytology and Genetics, The Hengyang Key Laboratory of Cellular Stress Biology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Yuanyun Wei
- Institute of Cytology and Genetics, The Hengyang Key Laboratory of Cellular Stress Biology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Shuang Wei
- Institute of Cytology and Genetics, The Hengyang Key Laboratory of Cellular Stress Biology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Yaqi Gong
- Institute of Cytology and Genetics, The Hengyang Key Laboratory of Cellular Stress Biology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Caimao Guo
- Institute of Cytology and Genetics, The Hengyang Key Laboratory of Cellular Stress Biology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Qingyu Wang
- Institute of Cytology and Genetics, The Hengyang Key Laboratory of Cellular Stress Biology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Peimeng Shuai
- Institute of Cytology and Genetics, The Hengyang Key Laboratory of Cellular Stress Biology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Tiantian Wang
- Institute of Cytology and Genetics, The Hengyang Key Laboratory of Cellular Stress Biology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Hui Qin
- Institute of Cytology and Genetics, The Hengyang Key Laboratory of Cellular Stress Biology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Guoqing Li
- Institute of Cytology and Genetics, The Hengyang Key Laboratory of Cellular Stress Biology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China.
| | - Lan Yi
- Institute of Cytology and Genetics, The Hengyang Key Laboratory of Cellular Stress Biology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China.
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Yang Q, Qin B, Hou W, Qin H, Yin F. Pathogenesis and therapy of radiation enteritis with gut microbiota. Front Pharmacol 2023; 14:1116558. [PMID: 37063268 PMCID: PMC10102376 DOI: 10.3389/fphar.2023.1116558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 03/07/2023] [Indexed: 04/03/2023] Open
Abstract
Radiotherapy is widely used in clinic due to its good effect for cancer treatment. But radiotherapy of malignant tumors in the abdomen and pelvis is easy to cause radiation enteritis complications. Gastrointestinal tract contains numerous microbes, most of which are mutualistic relationship with the host. Abdominal radiation results in gut microbiota dysbiosis. Microbial therapy can directly target gut microbiota to reverse microbiota dysbiosis, hence relieving intestinal inflammation. In this review, we mainly summarized pathogenesis and novel therapy of the radiation-induced intestinal injury with gut microbiota dysbiosis and envision the opportunities and challenges of radiation enteritis therapy.
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Affiliation(s)
- Qilin Yang
- Research Institute of Intestinal Diseases, Shanghai Tenth People’s Hospital, Tongji University, Shanghai, China
- School of Clinical Medicine of Nanjing Medical University, Nanjing, China
| | - Bingzhi Qin
- Research Institute of Intestinal Diseases, Shanghai Tenth People’s Hospital, Tongji University, Shanghai, China
| | - Weiliang Hou
- Research Institute of Intestinal Diseases, Shanghai Tenth People’s Hospital, Tongji University, Shanghai, China
- Shanghai Cancer Institute, Renji Hospital School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- *Correspondence: Weiliang Hou, ; Huanlong Qin, ; Fang Yin,
| | - Huanlong Qin
- Research Institute of Intestinal Diseases, Shanghai Tenth People’s Hospital, Tongji University, Shanghai, China
- *Correspondence: Weiliang Hou, ; Huanlong Qin, ; Fang Yin,
| | - Fang Yin
- Research Institute of Intestinal Diseases, Shanghai Tenth People’s Hospital, Tongji University, Shanghai, China
- *Correspondence: Weiliang Hou, ; Huanlong Qin, ; Fang Yin,
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14
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Livanova AA, Fedorova AA, Zavirsky AV, Krivoi II, Markov AG. Dose- and Segment-Dependent Disturbance of Rat Gut by Ionizing Radiation: Impact of Tight Junction Proteins. Int J Mol Sci 2023; 24:ijms24021753. [PMID: 36675266 PMCID: PMC9863103 DOI: 10.3390/ijms24021753] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 12/30/2022] [Accepted: 01/12/2023] [Indexed: 01/18/2023] Open
Abstract
The damaging effect of ionizing radiation (IR) exposure results in the disturbance of the gut natural barrier, followed by the development of severe gastrointestinal injury. However, the dose and application segment are known to determine the effects of IR. In this study, we demonstrated the dose- and segment-specificity of tight junction (TJ) alteration in IR-induced gastrointestinal injury in rats. Male Wistar rats were subjected to a total-body X-ray irradiation at doses of 2 or 10 Gy. Isolated jejunum and colon segments were tested in an Ussing chamber 72 h after exposure. In the jejunum, 10-Gy IR dramatically altered transepithelial resistance, short-circuit current and permeability for sodium fluorescein. These changes were accompanied by severe disturbance of histological structure and total rearrangement of TJ content (increased content of claudin-1, -2, -3 and -4; multidirectional changes in tricellulin and occludin). In the colon of 10-Gy irradiated rats, lesions of barrier and transport functions were less pronounced, with only claudin-2 and -4 altered among TJ proteins. The 2-Gy IR did not change electrophysiological characteristics or permeability in the colon or jejunum, although slight alterations in jejunum histology were noted, emphasized with claudin-3 increase. Considering that TJ proteins are critical for maintaining epithelial barrier integrity, these findings may have implications for countermeasures in gastrointestinal acute radiation injury.
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Affiliation(s)
- Alexandra A. Livanova
- Department of General Physiology, St. Petersburg State University, 199034 St. Petersburg, Russia
| | - Arina A. Fedorova
- Department of General Physiology, St. Petersburg State University, 199034 St. Petersburg, Russia
| | - Alexander V. Zavirsky
- Department of Military Toxicology and Radiation Defense, S. M. Kirov Military Medical Academy, 194044 St. Petersburg, Russia
| | - Igor I. Krivoi
- Department of General Physiology, St. Petersburg State University, 199034 St. Petersburg, Russia
| | - Alexander G. Markov
- Department of General Physiology, St. Petersburg State University, 199034 St. Petersburg, Russia
- Correspondence:
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15
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Lin Y, Xia P, Cao F, Zhang C, Yang Y, Jiang H, Lin H, Liu H, Liu R, Liu X, Cai J. Protective effects of activated vitamin D receptor on radiation-induced intestinal injury. J Cell Mol Med 2022; 27:246-258. [PMID: 36579449 PMCID: PMC9843524 DOI: 10.1111/jcmm.17645] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 11/10/2022] [Accepted: 11/16/2022] [Indexed: 12/30/2022] Open
Abstract
Radiation-induced intestinal injury (RIII) is a common complication after radiation therapy in patients with pelvic, abdominal, or retroperitoneal tumours. Recently, in the model of DSS (Dextran Sulfate Sodium Salt) -induced intestinal inflammatory injury, it has been found in the study that transgenic mice expressing hVDR in IEC (Intestinal Epithelial Cell) manifest highly anti-injury properties in colitis, suggesting that activated VDR in the epithelial cells of intestine may inhibit colitis by protecting the mucosal epithelial barrier. In this study, we investigated the effect of the expression and regulation of VDR on the protection of RIII, and the radiosensitivity in vitro experiments, and explored the initial mechanism of VDR in regulating radiosensitivity of IEC. As a result, we found that the expression of VDR in intestinal tissues and cells in mice can be induced by ionizing radiation. VDR agonists are able to prolong the average survival time of mice after radiation and reduce the radiation-induced intestinal injury. For lack of vitamin D, the radiosensitivity of intestinal epithelial cells in mice increased, which can be reduced by VDR activation. Ensuing VDR activation, the radiation-induced intestinal stem cells damage is decreased, and the regeneration and differentiation of intestinal stem cells is promoted as well. Finally, on the basis of sequencing analysis, we validated and found that VDR may target the HIF/PDK1 pathway to mitigate RIII. We concluded that agonism or upregulation of VDR expression attenuates radiation-induced intestinal damage in mice and promotes the repair of epithelial damage in intestinal stem cells.
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Affiliation(s)
- Yuhan Lin
- School of Public Health and ManagementWenzhou Medical UniversityZhejiangChina
| | - Penglin Xia
- Department of Radiation Medicine, Faculty of Naval MedicineNaval Military Medical UniversityShanghaiChina
| | - Fangyu Cao
- Incubation Base for Undergraduates' Innovative Practice in Department of Radiation Medicine, Faculty of Naval MedicineNaval Military Medical UniversityShanghaiChina
| | - Cheng Zhang
- School of Public Health and ManagementWenzhou Medical UniversityZhejiangChina
| | - Yajie Yang
- Incubation Base for Undergraduates' Innovative Practice in Department of Radiation Medicine, Faculty of Naval MedicineNaval Military Medical UniversityShanghaiChina
| | - Haitao Jiang
- Department of Oral and maxillofacial Trauma and Orthognathic SurgeryStomatological Hospital of Zunyi Medical UniversityZunyiChina
| | - Haishan Lin
- Cancer Centre, Beijing Friendship HospitalCapital Medical UniversityBeijingChina
| | - Hu Liu
- Department of Radiation Medicine, Faculty of Naval MedicineNaval Military Medical UniversityShanghaiChina
| | - Ruling Liu
- Department of Radiation Medicine, Faculty of Naval MedicineNaval Military Medical UniversityShanghaiChina
| | - Xiaodong Liu
- School of Public Health and ManagementWenzhou Medical UniversityZhejiangChina
| | - Jianming Cai
- School of Public Health and ManagementWenzhou Medical UniversityZhejiangChina,Department of Radiation Medicine, Faculty of Naval MedicineNaval Military Medical UniversityShanghaiChina
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16
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Zhou Q, Shen B, Huang R, Liu H, Zhang W, Song M, Liu K, Lin X, Chen S, Liu Y, Wang Y, Zhi F. Bacteroides fragilis strain ZY-312 promotes intestinal barrier integrity via upregulating the STAT3 pathway in a radiation-induced intestinal injury mouse model. Front Nutr 2022; 9:1063699. [PMID: 36590229 PMCID: PMC9798896 DOI: 10.3389/fnut.2022.1063699] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 11/14/2022] [Indexed: 12/23/2022] Open
Abstract
Radiation-induced intestinal injury is characterized by intestinal barrier impairment. However, the therapeutic effects of probiotics for intestinal epithelial barrier repair in a mouse model of radiation-induced intestinal injury remain unclear. Previously, we isolated a strain of Bacteroides fragilis from the feces of a healthy infant and named it as B. fragilis strain ZY-312 (B. fragilis). In this study, we showed that B. fragilis can ameliorate radiation-induced intestinal injury in mice, manifested by decreased weight loss, intestinal length shortening, and intestinal epithelial cell (IEC) shedding. Moreover, we found that B. fragilis promoted IEC proliferation, stem cell regeneration, mucus secretion, and tight junction integrity by upregulating the STAT3 signaling pathway, through an experimental verification in Stat3 △IEC mice (STAT3 defects in intestinal epithelial cells). Thus, the underlying protective mechanism of B. fragilis in radiation-induced intestinal injury is related to IEC proliferation, stem cell regeneration, goblet cell secretion, and tight junction repair via activation of the STAT3 signaling pathway. In addition, the therapeutic effects of B. fragilis were studied to provide new insights into its application as a functional and clinical drug for radiation-induced intestinal injury after radiotherapy.
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Affiliation(s)
- Qian Zhou
- Department of Gastroenterology, Institute of Gastroenterology of Guangdong Province, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Binhai Shen
- Department of Gastroenterology, Institute of Gastroenterology of Guangdong Province, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Ruo Huang
- Department of Gastroenterology, Institute of Gastroenterology of Guangdong Province, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Hongbin Liu
- Department of Gastroenterology, Institute of Gastroenterology of Guangdong Province, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Wendi Zhang
- Department of Gastroenterology, Institute of Gastroenterology of Guangdong Province, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Mengyao Song
- Department of Gastroenterology, Institute of Gastroenterology of Guangdong Province, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Ke Liu
- Department of Gastroenterology, Institute of Gastroenterology of Guangdong Province, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xinlong Lin
- Department of Gastroenterology, Institute of Gastroenterology of Guangdong Province, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Shuze Chen
- Department of Gastroenterology, Institute of Gastroenterology of Guangdong Province, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yangyang Liu
- Guangzhou Zhiyi Biotechnology Co., Ltd., Guangzhou, China
| | - Ye Wang
- Guangzhou Zhiyi Biotechnology Co., Ltd., Guangzhou, China
| | - Fachao Zhi
- Department of Gastroenterology, Institute of Gastroenterology of Guangdong Province, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China,*Correspondence: Fachao Zhi, ; orcid.org/0000-0001-8674-4737
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Kim JM, Kim H, Oh SH, Jang WI, Lee SB, Park M, Kim S, Park S, Shim S, Jang H. Combined Administration of Pravastatin and Metformin Attenuates Acute Radiation-Induced Intestinal Injury in Mouse and Minipig Models. Int J Mol Sci 2022; 23:ijms232314827. [PMID: 36499155 PMCID: PMC9739896 DOI: 10.3390/ijms232314827] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 11/23/2022] [Accepted: 11/24/2022] [Indexed: 12/02/2022] Open
Abstract
Radiation-induced gastrointestinal (GI) damage is one of the critical factors that serve as basis for the lethality of nuclear accidents or terrorism. Further, there are no Food and Drug Administration-approved agents available to mitigate radiation-induced intestinal injury. Although pravastatin (PS) has been shown to exhibit anti-inflammatory and epithelial reconstructive effects following radiation exposure using mouse and minipig models, the treatment failed to improve the survival rate of high-dose irradiated intestinal injury. Moreover, we previously found that metformin (MF), a common drug used for treating type 2 diabetes mellitus, has a mitigating effect on radiation-induced enteropathy by promoting stem cell properties. In this study, we investigated whether the combined administration of PS and MF could achieve therapeutic effects on acute radiation-induced intestinal injury in mouse and minipig models. We found that the combined treatment markedly increased the survival rate and attenuated histological damage in a radiation-induced intestinal injury mouse model, in addition to epithelial barrier recovery, anti-inflammatory effects, and improved epithelial proliferation with stem cell properties. Furthermore, in minipig models, combined treatment with PS and MF ameliorates gross pathological damage in abdominal organs and attenuated radiation-induced intestinal histological damage. Therefore, the combination of PS and MF effectively alleviated radiation-induced intestinal injury in the mouse and minipig models. We believe that the combined use of PS and MF is a promising therapeutic approach for treating radiation-induced intestinal injury.
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Affiliation(s)
- Jung Moon Kim
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Science, Seoul 01812, Republic of Korea
- Department of Veterinary Surgery, College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of Korea
| | - Hyewon Kim
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Science, Seoul 01812, Republic of Korea
| | - Su Hyun Oh
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Science, Seoul 01812, Republic of Korea
| | - Won Il Jang
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Science, Seoul 01812, Republic of Korea
| | - Seung Bum Lee
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Science, Seoul 01812, Republic of Korea
| | - Mineon Park
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Science, Seoul 01812, Republic of Korea
| | - Soyeon Kim
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Science, Seoul 01812, Republic of Korea
| | - Sunhoo Park
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Science, Seoul 01812, Republic of Korea
| | - Sehwan Shim
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Science, Seoul 01812, Republic of Korea
- Correspondence: (S.S.); (H.J.); Tel.: +82-2-3399-5873 (S.S.); +82-2-970-1302 (H.J.)
| | - Hyosun Jang
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Science, Seoul 01812, Republic of Korea
- Correspondence: (S.S.); (H.J.); Tel.: +82-2-3399-5873 (S.S.); +82-2-970-1302 (H.J.)
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18
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Rios CI, Hollingsworth BA, DiCarlo AL, Esker JE, Satyamitra MM, Silverman TA, Winters TA, Taliaferro LP. Animal Care in Radiation Medical Countermeasures Studies. Radiat Res 2022; 198:514-535. [PMID: 36001810 PMCID: PMC9743977 DOI: 10.1667/rade-21-00211.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 07/26/2022] [Indexed: 12/14/2022]
Abstract
Animal models are necessary to demonstrate the efficacy of medical countermeasures (MCM) to mitigate/treat acute radiation syndrome and the delayed effects of acute radiation exposure and develop biodosimetry signatures for use in triage and to guide medical management. The use of animal models in radiation research allows for the simulation of the biological effects of exposure in humans. Robust and well-controlled animal studies provide a platform to address basic mechanistic and safety questions that cannot be conducted in humans. The U.S. Department of Health and Human Services has tasked the National Institute of Allergy and Infectious Diseases (NIAID) with identifying and funding early- through advanced-stage MCM development for radiation-induced injuries; and advancement of biodosimetry platforms and exploration of biomarkers for triage, definitive dose, and predictive purposes. Some of these NIAID-funded projects may transition to the Biomedical Advanced Research and Development Authority (BARDA), a component of the Office of the Assistant Secretary for Preparedness and Response in the U.S. Department of Health and Human Services, which is tasked with the advanced development of MCMs to include pharmacokinetic, exposure, and safety assessments in humans. Guided by the U.S. Food and Drug Administration's (FDA) Animal Rule, both NIAID and BARDA work closely with researchers to advance product and device development, setting them on a course for eventual licensure/approval/clearance of their approaches by the FDA. In August 2020, NIAID partnered with BARDA to conduct a workshop to discuss currently accepted animal care protocols and examine aspects of animal models that can influence outcomes of studies to explore MCM efficacy for potential harmonization. This report provides an overview of the two-day workshop, which includes a series of special topic presentations followed by panel discussions with subject-matter experts from academia, industry partners, and select governmental agencies.
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Affiliation(s)
- Carmen I. Rios
- Radiation and Nuclear Countermeasures Program (RNCP), Division of Allergy, Immunology, and Transplantation (DAIT), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Rockville, Maryland
| | | | - Andrea L. DiCarlo
- Radiation and Nuclear Countermeasures Program (RNCP), Division of Allergy, Immunology, and Transplantation (DAIT), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Rockville, Maryland
| | - John E. Esker
- Biomedical Advanced Research and Development Authority (BARDA), Office of the Assistant Secretary for Preparedness and Response (ASPR), US Department of Health and Human Services (HHS), Washington, DC
| | - Merriline M. Satyamitra
- Radiation and Nuclear Countermeasures Program (RNCP), Division of Allergy, Immunology, and Transplantation (DAIT), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Rockville, Maryland
| | - Toby A. Silverman
- Biomedical Advanced Research and Development Authority (BARDA), Office of the Assistant Secretary for Preparedness and Response (ASPR), US Department of Health and Human Services (HHS), Washington, DC
| | - Thomas A. Winters
- Radiation and Nuclear Countermeasures Program (RNCP), Division of Allergy, Immunology, and Transplantation (DAIT), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Rockville, Maryland
| | - Lanyn P. Taliaferro
- Radiation and Nuclear Countermeasures Program (RNCP), Division of Allergy, Immunology, and Transplantation (DAIT), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Rockville, Maryland,Corresponding author: Lanyn P. Taliaferro, PhD, DAIT, NIAID, NIH, 5601 Fishers Lane, Rockville, MD 20852;
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19
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Garg S, Garg TK, Miousse IR, Wise SY, Fatanmi OO, Savenka AV, Basnakian AG, Singh VK, Hauer-Jensen M. Effects of Gamma-Tocotrienol on Partial-Body Irradiation-Induced Intestinal Injury in a Nonhuman Primate Model. Antioxidants (Basel) 2022; 11:1895. [PMID: 36290618 PMCID: PMC9598988 DOI: 10.3390/antiox11101895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/16/2022] [Accepted: 09/19/2022] [Indexed: 11/17/2022] Open
Abstract
Exposure to high doses of radiation, accidental or therapeutic, often results in gastrointestinal (GI) injury. To date, there are no therapies available to mitigate GI injury after radiation exposure. Gamma-tocotrienol (GT3) is a promising radioprotector under investigation in nonhuman primates (NHP). We have shown that GT3 has radioprotective function in intestinal epithelial and crypt cells in NHPs exposed to 12 Gy total-body irradiation (TBI). Here, we determined GT3 potential in accelerating the GI recovery in partial-body irradiated (PBI) NHPs using X-rays, sparing 5% bone marrow. Sixteen rhesus macaques were treated with either vehicle or GT3 24 h prior to 12 Gy PBI. Structural injuries and crypt survival were examined in proximal jejunum on days 4 and 7. Plasma citrulline was assessed using liquid chromatography-tandem mass spectrometry (LC-MS/MS). Crypt cell proliferation and apoptotic cell death were evaluated using Ki-67 and TUNEL staining. PBI significantly decreased mucosal surface area and reduced villous height. Interestingly, GT3 increased crypt survival and enhanced stem cell proliferation at day 4; however, the effects seemed to be minimized by day 7. GT3 did not ameliorate a radiation-induced decrease in citrulline levels. These data suggest that X-rays induce severe intestinal injury post-PBI and that GT3 has minimal radioprotective effect in this novel model.
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Affiliation(s)
- Sarita Garg
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
- Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Tarun K. Garg
- UAMS Myeloma Center, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Isabelle R. Miousse
- Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Stephen Y. Wise
- Division of Radioprotectants, Department of Pharmacology and Molecular Therapeutics, F. Edward Hébert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
- Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
| | - Oluseyi O. Fatanmi
- Division of Radioprotectants, Department of Pharmacology and Molecular Therapeutics, F. Edward Hébert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
- Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
| | - Alena V. Savenka
- Department of Pharmacology and Toxicology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Alexei G. Basnakian
- Department of Pharmacology and Toxicology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
- John L. McClellan Memorial VA Hospital, Central Arkansas Veterans Healthcare System, Little Rock, AR 72205, USA
| | - Vijay K. Singh
- Division of Radioprotectants, Department of Pharmacology and Molecular Therapeutics, F. Edward Hébert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
- Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
| | - Martin Hauer-Jensen
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
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20
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Centella asiatica-Derived Endothelial Paracrine Restores Epithelial Barrier Dysfunction in Radiation-Induced Enteritis. Cells 2022; 11:cells11162544. [PMID: 36010621 PMCID: PMC9406831 DOI: 10.3390/cells11162544] [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: 06/30/2022] [Revised: 07/30/2022] [Accepted: 08/14/2022] [Indexed: 11/17/2022] Open
Abstract
Radiation-induced enteritis is frequently observed following radiotherapy for cancer or occurs due to radiation exposure in a nuclear accident. The loss of the epithelial integrity leads to ‘leaky gut’, so recovery of damaged epithelium is an important strategy in therapeutic trials. Centella asiatica (CA), a traditional herbal medicine, is widely used for wound healing by protecting against endothelial damage. In this study, we investigated the radio-mitigating effect of CA, focusing on the crosstalk between endothelial and epithelial cells. CA treatment relieved radiation-induced endothelial dysfunction and mitigated radiation-induced enteritis. In particular, treatment of the conditioned media from CA-treated irradiated endothelial cells recovered radiation-induced epithelial barrier damage. We also determined that epidermal growth factor (EGF) is a critical factor secreted by CA-treated irradiated endothelial cells. Treatment with EGF effectively improved the radiation-induced epithelial barrier dysfunction. We also identified the therapeutic effects of CA-induced endothelial paracrine in a radiation-induced enteritis mouse model with epithelial barrier restoration. Otherwise, CA treatment did not show radioprotective effects on colorectal tumors in vivo. We showed therapeutic effects of CA on radiation-induced enteritis, with the recovery of endothelial and epithelial dysfunction. Thus, our findings suggest that CA is an effective radio-mitigator against radiation-induced enteritis.
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21
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Byrne JD, Gallo D, Boyce H, Becker SL, Kezar KM, Cotoia AT, Feig VR, Lopes A, Csizmadia E, Longhi MS, Lee JS, Kim H, Wentworth AJ, Shankar S, Lee GR, Bi J, Witt E, Ishida K, Hayward A, Kuosmanen JLP, Jenkins J, Wainer J, Aragon A, Wong K, Steiger C, Jeck WR, Bosch DE, Coleman MC, Spitz DR, Tift M, Langer R, Otterbein LE, Traverso G. Delivery of therapeutic carbon monoxide by gas-entrapping materials. Sci Transl Med 2022; 14:eabl4135. [PMID: 35767653 DOI: 10.1126/scitranslmed.abl4135] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Carbon monoxide (CO) has long been considered a toxic gas but is now a recognized bioactive gasotransmitter with potent immunomodulatory effects. Although inhaled CO is currently under investigation for use in patients with lung disease, this mode of administration can present clinical challenges. The capacity to deliver CO directly and safely to the gastrointestinal (GI) tract could transform the management of diseases affecting the GI mucosa such as inflammatory bowel disease or radiation injury. To address this unmet need, inspired by molecular gastronomy techniques, we have developed a family of gas-entrapping materials (GEMs) for delivery of CO to the GI tract. We show highly tunable and potent delivery of CO, achieving clinically relevant CO concentrations in vivo in rodent and swine models. To support the potential range of applications of foam GEMs, we evaluated the system in three distinct disease models. We show that a GEM containing CO dose-dependently reduced acetaminophen-induced hepatocellular injury, dampened colitis-associated inflammation and oxidative tissue injury, and mitigated radiation-induced gut epithelial damage in rodents. Collectively, foam GEMs have potential paradigm-shifting implications for the safe therapeutic use of CO across a range of indications.
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Affiliation(s)
- James D Byrne
- Division of Gastroenterology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.,Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142, USA.,Harvard Radiation Oncology Residency Program, Boston, MA 02114, USA.,Department of Radiation Oncology, University of Iowa, Iowa City, IA 52242, USA.,Department of Biomedical Engineering, University of Iowa, Iowa City, IA 52240, USA.,Free Radical and Radiation Biology Program, Department of Radiation Oncology, Holden Comprehensive Cancer Center, University of Iowa, Iowa City, IA 52242, USA
| | - David Gallo
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Hannah Boyce
- Division of Gastroenterology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Sarah L Becker
- Division of Gastroenterology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Kristi M Kezar
- Department of Biology and Marine Biology, University of North Carolina Wilmington, Wilmington, NC 28403, USA
| | - Alicia T Cotoia
- Department of Biology and Marine Biology, University of North Carolina Wilmington, Wilmington, NC 28403, USA
| | - Vivian R Feig
- Division of Gastroenterology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Aaron Lopes
- Division of Gastroenterology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.,Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - Eva Csizmadia
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Maria Serena Longhi
- Department of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Jung Seung Lee
- Division of Gastroenterology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.,Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142, USA.,Department of Intelligent Precision Healthcare Convergence, SKKU Institute of Convergence, Sungkyunkwan University, Suwon 16419, South Korea
| | - Hyunjoon Kim
- Division of Gastroenterology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.,Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - Adam J Wentworth
- Division of Gastroenterology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.,Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - Sidharth Shankar
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Ghee Rye Lee
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Jianling Bi
- Department of Radiation Oncology, University of Iowa, Iowa City, IA 52242, USA
| | - Emily Witt
- Department of Radiation Oncology, University of Iowa, Iowa City, IA 52242, USA
| | - Keiko Ishida
- Division of Gastroenterology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.,Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - Alison Hayward
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142, USA.,Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Johannes L P Kuosmanen
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - Josh Jenkins
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - Jacob Wainer
- Division of Gastroenterology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.,Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - Aya Aragon
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Kaitlyn Wong
- Division of Gastroenterology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Christoph Steiger
- Division of Gastroenterology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.,Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - William R Jeck
- Department of Pathology, Duke University, Durham, NC 27710, USA
| | - Dustin E Bosch
- Department of Pathology, University of Iowa, Iowa City, IA 52242, USA
| | - Mitchell C Coleman
- Free Radical and Radiation Biology Program, Department of Radiation Oncology, Holden Comprehensive Cancer Center, University of Iowa, Iowa City, IA 52242, USA
| | - Douglas R Spitz
- Free Radical and Radiation Biology Program, Department of Radiation Oncology, Holden Comprehensive Cancer Center, University of Iowa, Iowa City, IA 52242, USA
| | - Michael Tift
- Department of Biology and Marine Biology, University of North Carolina Wilmington, Wilmington, NC 28403, USA
| | - Robert Langer
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - Leo E Otterbein
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Giovanni Traverso
- Division of Gastroenterology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.,Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
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22
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Metformin Protects the Intestinal Barrier by Activating Goblet Cell Maturation and Epithelial Proliferation in Radiation-Induced Enteropathy. Int J Mol Sci 2022; 23:ijms23115929. [PMID: 35682612 PMCID: PMC9180746 DOI: 10.3390/ijms23115929] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 05/16/2022] [Accepted: 05/20/2022] [Indexed: 02/01/2023] Open
Abstract
Radiotherapy or accidental exposure to high-dose radiation can cause severe damage to healthy organs. The gastrointestinal (GI) tract is a radiation-sensitive organ of the body. The intestinal barrier is the first line of defense in the GI tract, and consists of mucus secreted by goblet cells and a monolayer of epithelium. Intestinal stem cells (ISCs) help in barrier maintenance and intestinal function after injury by regulating efficient regeneration of the epithelium. The Wnt/β-catenin pathway plays a critical role in maintaining the intestinal epithelium and regulates ISC self-renewal. Metformin is the most widely used antidiabetic drug in clinical practice, and its anti-inflammatory, antioxidative, and antiapoptotic effects have also been widely studied. In this study, we investigated whether metformin alleviated radiation-induced enteropathy by focusing on its role in protecting the epithelial barrier. We found that metformin alleviated radiation-induced enteropathy, with increased villi length and crypt numbers, and restored the intestinal barrier function in the irradiated intestine. In a radiation-induced enteropathy mouse model, metformin treatment increased tight-junction expression in the epithelium and inhibited bacterial translocation to mesenteric lymph nodes. Metformin increased the number of ISCs from radiation toxicity and enhanced epithelial repair by activating Wnt/β-catenin signaling. These data suggested that metformin may be a potential therapeutic agent for radiation-induced enteropathy.
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23
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Garg S, Garg TK, Wise SY, Fatanmi OO, Miousse IR, Savenka AV, Basnakian AG, Singh VK, Hauer-Jensen M. Effects of Gamma-Tocotrienol on Intestinal Injury in a GI-Specific Acute Radiation Syndrome Model in Nonhuman Primate. Int J Mol Sci 2022; 23:ijms23094643. [PMID: 35563033 PMCID: PMC9100017 DOI: 10.3390/ijms23094643] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 04/17/2022] [Accepted: 04/19/2022] [Indexed: 12/14/2022] Open
Abstract
The gastrointestinal (GI) system is highly susceptible to irradiation. Currently, there is no Food and Drug Administration (FDA)-approved medical countermeasures for GI radiation injury. The vitamin E analog gamma-tocotrienol (GT3) is a promising radioprotector in mice and nonhuman primates (NHP). We evaluated GT3-mediated GI recovery in total-body irradiated (TBI) NHPs. Sixteen rhesus macaques were divided into two groups; eight received vehicle and eight GT3 24 h prior to 12 Gy TBI. Proximal jejunum was assessed for structural injuries and crypt survival on day 4 and 7. Apoptotic cell death and crypt cell proliferation were assessed with TUNEL and Ki-67 immunostaining. Irradiation induced significant shortening of the villi and reduced mucosal surface area. GT3 induced an increase in crypt depth at day 7, suggesting that more stem cells survived and proliferated after irradiation. GT3 did not influence crypt survival after irradiation. GT3 treatment caused a significant decline in TUNEL-positive cells at both day 4 (p < 0.03) and 7 (p < 0.0003). Importantly, GT3 induced a significant increase in Ki-67-positive cells at day 7 (p < 0.05). These data suggest that GT3 has radioprotective function in intestinal epithelial and crypt cells. GT3 should be further explored as a prophylactic medical countermeasure for radiation-induced GI injury.
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Affiliation(s)
- Sarita Garg
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA;
- Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA;
| | - Tarun K. Garg
- UAMS Myeloma Center, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA;
| | - Stephen Y. Wise
- Division of Radioprotectants, Department of Pharmacology and Molecular Therapeutics, F. Edward Hébert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA; (S.Y.W.); (O.O.F.); (V.K.S.)
- Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
| | - Oluseyi O. Fatanmi
- Division of Radioprotectants, Department of Pharmacology and Molecular Therapeutics, F. Edward Hébert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA; (S.Y.W.); (O.O.F.); (V.K.S.)
- Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
| | - Isabelle R. Miousse
- Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA;
| | - Alena V. Savenka
- Department of Pharmacology and Toxicology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (A.V.S.); (A.G.B.)
| | - Alexei G. Basnakian
- Department of Pharmacology and Toxicology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (A.V.S.); (A.G.B.)
- John L. McClellan Memorial VA Hospital, Central Arkansas Veterans Healthcare System, Little Rock, AR 72205, USA
| | - Vijay K. Singh
- Division of Radioprotectants, Department of Pharmacology and Molecular Therapeutics, F. Edward Hébert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA; (S.Y.W.); (O.O.F.); (V.K.S.)
- Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
| | - Martin Hauer-Jensen
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA;
- Correspondence: ; Tel.: +1-501-686-7912; Fax: +1-501-421-0022
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24
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Ju HE, Lee CS, Bae JH, Lee HJ, Yoon MR, Al-Sawat A, Lee DS, Lee IK, Lee YS, Song IH, Han SR. High incidence rate of late anastomosis leakage in patients for rectal cancer after neoadjuvant chemoradiotherapy: A comparative study. Asian J Surg 2021; 45:1832-1842. [PMID: 34815142 DOI: 10.1016/j.asjsur.2021.10.039] [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: 07/28/2021] [Revised: 10/19/2021] [Accepted: 10/25/2021] [Indexed: 11/02/2022] Open
Abstract
PURPOSE The purpose of this study was to investigate the clinical features and risk factors of late anastomotic leakage (AL) in a homogeneous cohort with elective sphincter-sparing surgery (SSS) with ileostomy after neoadjuvant chemoradiotherapy (nCRT) for rectal cancer. METHODS Data from a total of 359 patients who underwent elective rectal cancer surgery between Jan 2017 and May 2020 were retrospectively reviewed. Patients were classified into early and late AL groups, referring to onset of AL occurring within or after 30 post-operative days, respectively. We analyzed clinical, pathological, and inflammatory features of both AL and risk factors of stoma reversal failure and late AL. RESULTS A total of 85 patients with SSS with ileostomy after nCRT were classified into 8 (9.4%) patients of early AL and 16 (18.8%) of late AL. Unlike early AL patients, late AL group showed lower neutrophil-lymphocyte ratio (NLR) (P < 0.001) and did not need an invasive intervention at the time of diagnosis. 50% (5/10) patients needed reformation of ileostomy. (P = 0.048) Failure of stoma reversal is associated with advanced stages, high NLR ratio (≥3), and inflammatory lesions seen around anastomosis in radiologic findings, which was confirmed as the risk factor of late AL. CONCLUSION Late AL, with different clinical features, showed a higher incidence than early AL in patients who underwent surgery after nCRT and also had a higher stoma reformation rate. Careful evaluation using laboratory and radiological findings before an ileostomy closure is performed to prevent late AL.
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Affiliation(s)
- Hui Eun Ju
- Division of Colorectal Surgery, Department of Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Chul Seung Lee
- Division of Colorectal Surgery, Department of Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jung Hoon Bae
- Division of Colorectal Surgery, Department of Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hyo Jin Lee
- Division of Colorectal Surgery, Department of Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Mi Ran Yoon
- Division of Colorectal Surgery, Department of Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Abdullah Al-Sawat
- Division of Colorectal Surgery, Department of Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea; Department of Surgery, College of Medicine, Taif University, Taif, Saudi Arabia
| | - Do Sang Lee
- Division of Colorectal Surgery, Department of Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - In Kyu Lee
- Division of Colorectal Surgery, Department of Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Yoon Suk Lee
- Division of Colorectal Surgery, Department of Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - In Hye Song
- Department of Hospital Pathology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Seung-Rim Han
- Division of Colorectal Surgery, Department of Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
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25
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Koc G, Kuskonmaz SM, Demirel K, Koca G, Akbulut A, Yumusak N, Senes M, Kirtil G, Korkmaz M, Culha C. Ameliorating effects of N-acetyl cysteine against early liver damage of radioiodine in rats. Nucl Med Commun 2021; 42:1195-1201. [PMID: 34149008 DOI: 10.1097/mnm.0000000000001454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE The present study was aimed to explore the potential ameliorating effects of N-acetyl cysteine (NAC) against radioiodine (RAI)-induced early liver damage. METHODS Thirty Wistar Albino male rats were arbitrarily allocated into three groups each containing 10 rats: the control group (group 1); the RAI group (group 2), oral 111 MBq/kg radioiodine was administered to rats; the RAI + NAC group (group 3), 150 mg/kg/day intraperitoneal NAC treatment was initiated 3 days prior to the RAI administration and continued for 10 days. Liver samples were obtained 24 h after the last dose of NAC therapy for biochemical and histopathologic evaluation. RESULTS In the RAI + NAC group, the histopathologic damage was found significantly less than in the RAI group for whole parameters except inflammatory cell infiltration (P < 0.05). Unlike the RAI group which had marked histopathologic damage, the RAI + NAC group had only mild histologic activity index scores with no granuloma formation observed. Oxidative stress parameters were demonstrated that the NAC treatment significantly decreased the tissue malondialdehyde (MDA) and catalase levels and increased the total sulfhydryl (total sulfhydryl) levels when compared to the RAI group (P < 0.01). CONCLUSION The outcomes of the study exhibited that the NAC treatment improved RAI-induced early liver damage. This improving effect considered to be caused by its antioxidant, anti-inflammatory, and likely vasodilator properties of NAC. Having advantages such as inexpensive, easy access, and tolerability, the NAC can be used as a radioprotective agent, especially in patients with liver diseases and requiring RAI treatment.
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Affiliation(s)
- Gonul Koc
- Department of Endocrinology and Metabolism
| | | | - Koray Demirel
- Department of Nuclear Medicine, University of Health Sciences, Ankara Training and Research Hospital, Ankara
| | - Gokhan Koca
- Department of Nuclear Medicine, University of Health Sciences, Ankara Training and Research Hospital, Ankara
| | - Aylin Akbulut
- Department of Nuclear Medicine, University of Health Sciences, Ankara Training and Research Hospital, Ankara
| | - Nihat Yumusak
- Department of Pathology, Harran University Faculty of Veterinary Medicine, Sanliurfa
| | - Mehmet Senes
- Department of Biochemistry, University of Health Sciences, Ankara Training and Research Hospital, Ankara, Turkey
| | - Gul Kirtil
- Department of Biochemistry, University of Health Sciences, Ankara Training and Research Hospital, Ankara, Turkey
| | - Meliha Korkmaz
- Department of Nuclear Medicine, University of Health Sciences, Ankara Training and Research Hospital, Ankara
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Kwak SY, Jang WI, Park S, Cho SS, Lee SB, Kim MJ, Park S, Shim S, Jang H. Metallothionein 2 activation by pravastatin reinforces epithelial integrity and ameliorates radiation-induced enteropathy. EBioMedicine 2021; 73:103641. [PMID: 34688032 PMCID: PMC8546423 DOI: 10.1016/j.ebiom.2021.103641] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 10/05/2021] [Accepted: 10/07/2021] [Indexed: 01/04/2023] Open
Abstract
Background Radiotherapy or accidental exposure to ionizing radiation causes severe damage of healthy intestinal tissues. Intestinal barrier function is highly sensitive to ionizing radiation, and loss of epithelial integrity results in mucosal inflammation, bacterial translocation, and endotoxemia. Few studies have of epithelial integrity as a therapeutic target to treat radiation toxicity. Here, we examined the effects of pravastatin (PS) and the molecular mechanisms underlying epithelial integrity on radiation-induced enteropathy. Methods The radio-mitigative effects of PS were evaluated in a minipig model by quantifying clinical symptoms, and performing histological and serological analyses and mRNA sequencing in intestinal tissues. To evaluate the role of intercellular junctions on radiation damage, we used tight junction regulator and metallothionein 2 (MT2) as treatments in a mouse model of radiation-induced enteropathy. Caco-2 monolayers were used to examine functional epithelial integrityand intercellular junction expression. Finding Using a minipig model of pharmaceutical oral bioavailability, we found that PS mitigated acute radiation-induced enteropathy. PS-treated irradiated minipigs had mild clinical symptoms, lower intestinal inflammation and endotoxin levels, and improved gastrointestinal integrity, compared with control group animals. The results of mRNA sequencing analysis indicated that PS treatment markedly influenced intercellular junctions by inhibiting p38 MAPK signaling in the irradiated intestinal epithelium. The PS-regulated gene MT2 improved the epithelial barrier via enhancement of intercellular junctions in radiation-induced enteropathy. Interpretation PS regulated epithelial integrity by modulating MT2 in radiation-damaged epithelial cells. These findings suggested that maintenance of epithelial integrity is a novel therapeutic target for treatment of radiation-induced gastrointestinal damage. Funding As stated in the Acknowledgments
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Affiliation(s)
- Seo Young Kwak
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Republic of Korea
| | - Won Il Jang
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Republic of Korea
| | - Seungwoo Park
- Comprehensive Radiation Irradiation Center, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Republic of Korea
| | - Sang Sik Cho
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Republic of Korea; Department of Surgery, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Republic of Korea
| | - Seung Bum Lee
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Republic of Korea
| | - Min-Jung Kim
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Republic of Korea
| | - Sunhoo Park
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Republic of Korea
| | - Sehwan Shim
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Republic of Korea.
| | - Hyosun Jang
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Republic of Korea.
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Hu Y, Thaler J, Nieuwland R. Extracellular Vesicles in Human Milk. Pharmaceuticals (Basel) 2021; 14:1050. [PMID: 34681274 PMCID: PMC8539554 DOI: 10.3390/ph14101050] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 10/05/2021] [Accepted: 10/11/2021] [Indexed: 12/13/2022] Open
Abstract
Milk supports the growth and development of infants. An increasing number of mostly recent studies have demonstrated that milk contains a hitherto undescribed component called extracellular vesicles (EVs). This presents questions regarding why milk contains EVs and what their function is. Recently, we showed that EVs in human milk expose tissue factor, the protein that triggers coagulation or blood clotting, and that milk-derived EVs promote coagulation. Because bovine milk, which also contains EVs, completely lacks this coagulant activity, important differences are present in the biological functions of human milk-derived EVs between species. In this review, we will summarize the current knowledge regarding the presence and biochemical composition of milk EVs, their function(s) and potential clinical applications such as in probiotics, and the unique problems that milk EVs encounter in vivo, including survival of the gastrointestinal conditions encountered in the newborn. The main focus of this review will be human milk-derived EVs, but when available, we will also include information regarding non-human milk for comparison.
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Affiliation(s)
- Yong Hu
- Laboratory of Experimental Clinical Chemistry and Vesicle Observation Center, Amsterdam University Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands;
- Biomedical Engineering & Physics, Amsterdam University Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
| | - Johannes Thaler
- Clinical Division of Haematology and Haemostaseology, Department of Medicine I, Medical University of Vienna, Währinger Gürtel 18–20, 1090 Vienna, Austria;
| | - Rienk Nieuwland
- Laboratory of Experimental Clinical Chemistry and Vesicle Observation Center, Amsterdam University Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands;
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Perez-Gelvez YNC, Camus AC, Bridger R, Wells L, Rhodes OE, Bergmann CW. Effects of chronic exposure to low levels of IR on Medaka ( Oryzias latipes): a proteomic and bioinformatic approach. Int J Radiat Biol 2021; 97:1485-1501. [PMID: 34355643 DOI: 10.1080/09553002.2021.1962570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
PURPOSE Chronic exposure to ionizing radiation (IR) at low doses (<100 mGy) has been insufficiently studied to understand fully the risk to health. Relatively little knowledge exists regarding how species and healthy tissues respond at the protein level to chronic exposure to low doses of IR, and mass spectrometric-based profiling of protein expression is a powerful tool for studying changes in protein abundance. MATERIALS AND METHODS SDS gel electrophoresis, LC-MS/MS mass spectrometry-based approaches and bioinformatic data analytics were used to detect proteomic changes following chronic exposure to moderate/low doses of radiation in adults and normally developed Medaka fish (Oryzias latipes). RESULTS Significant variations in the abundance of proteins involved in thyroid hormone signaling and lipid metabolism were detected, which could be related to the gonadal regression phenotype observed after 21.04 mGy and 204.3 mGy/day exposure. The global proteomic change was towards overexpression of proteins in muscle and skin, while the opposite effect was observed in internal organs. CONCLUSION The present study provides information on the impacts of biologically relevant low doses of IR, which will be useful in future research for the identification of potential biomarkers of IR exposure and allow for a better assessment of radiation biosafety regulations.
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Affiliation(s)
- Yeni Natalia C Perez-Gelvez
- Carbohydrate Complex Research Center, Biochemistry and Molecular Biology, The University of Georgia, Athens, GA, USA
| | - Alvin C Camus
- College of Veterinary Medicine, Department of Pathology, The University of Georgia, Athens, GA, USA
| | - Robert Bridger
- Carbohydrate Complex Research Center, The University of Georgia, Athens, GA, USA
| | - Lance Wells
- Carbohydrate Complex Research Center, The University of Georgia, Athens, GA, USA
| | - Olin E Rhodes
- Savannah River Ecology Laboratory, Odum School of Ecology, The University of Georgia, Athens, GA, USA
| | - Carl W Bergmann
- Carbohydrate Complex Research Center, The University of Georgia, Athens, GA, USA
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Dong J, Li Y, Xiao H, Cui M, Fan S. Commensal microbiota in the digestive tract: a review of its roles in carcinogenesis and radiotherapy. Cancer Biol Med 2021; 19:j.issn.2095-3941.2020.0476. [PMID: 34369136 PMCID: PMC8763002 DOI: 10.20892/j.issn.2095-3941.2020.0476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 01/27/2021] [Indexed: 11/11/2022] Open
Abstract
The human microflora is a complex ecosystem composed of diverse microorganisms mainly distributed in the epidermal and mucosal habitats of the entire body, including the mouth, lung, intestines, skin, and vagina. These microbial communities are involved in many essential functions, such as metabolism, immunity, host nutrition, and diseases. Recent studies have focused on the microbiota associated with cancers, particularly the oral and intestinal microbiota. Radiotherapy, the most effective cytotoxic modality available for solid tumors, contributes to the treatment of cancer patients. Mounting evidence supports that the microbiota plays pivotal roles in the efficacy and prognosis of tumor radiotherapy. Here, we review current research on the microbiota and cancer development, and describe knowledge gaps in the study of radiotherapy and the microbiota. Better understanding of the effects of the microbiome in tumorigenesis and radiotherapy will shed light on future novel prevention and treatment strategies based on modulating the microbiome in cancer patients.
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Affiliation(s)
- Jiali Dong
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Yuan Li
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Huiwen Xiao
- Department of Microbiology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Ming Cui
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Saijun Fan
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
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30
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Livanova AA, Fedorova AA, Zavirsky AV, Bikmurzina AE, Krivoi II, Markov AG. Dose and time dependence of functional impairments in rat jejunum following ionizing radiation exposure. Physiol Rep 2021; 9:e14960. [PMID: 34337895 PMCID: PMC8326886 DOI: 10.14814/phy2.14960] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 06/19/2021] [Accepted: 06/19/2021] [Indexed: 12/12/2022] Open
Abstract
Ionizing radiation causes dramatic change in the transport and barrier functions of the intestine. The degree of radiation damage rate depends primarily on the absorbed dose and post-irradiation time. Variety of experimental protocols providing different time points and doses exist, with the lack of a common approach. In this study, to develop a unified convenient experimental scheme, dose and time dependence of barrier and transport properties of rat jejunum following ionizing radiation exposure were examined. Male Wistar rats were exposed to total body X-ray irradiation (2, 5, or 10 Gy). The control group was subjected to sham irradiation procedure. Samples of rat jejunum were obtained at 24, 48, or 72 h post-irradiation. Transepithelial resistance, short circuit current (Isc ), and paracellular permeability for sodium fluorescein of jejunum samples were measured in an Ussing chamber; a histological examination was also performed. These parameters were significantly disturbed only 72 h after irradiation at a dose of 10 Gy, which was accompanied by loss of crypt and villi, inflammatory infiltrations, and disintegration of enterocytes. This suggests that found experimental point (72 h after 10 Gy exposure) is the most appropriate for future study using rat jejunum as a model.
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Affiliation(s)
- Alexandra A. Livanova
- Department of General PhysiologySt. Petersburg State UniversitySt. PetersburgRussia
- Department of BiologyS.M. Kirov Military Medical AcademySt. PetersburgRussia
| | - Arina A. Fedorova
- Department of General PhysiologySt. Petersburg State UniversitySt. PetersburgRussia
| | - Alexander V. Zavirsky
- Department of Military Toxicology and Medical DefenseS.M. Kirov Military Medical AcademySt. PetersburgRussia
| | | | - Igor I. Krivoi
- Department of General PhysiologySt. Petersburg State UniversitySt. PetersburgRussia
| | - Alexander G. Markov
- Department of General PhysiologySt. Petersburg State UniversitySt. PetersburgRussia
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Segers C, Mysara M, Claesen J, Baatout S, Leys N, Lebeer S, Verslegers M, Mastroleo F. Intestinal mucositis precedes dysbiosis in a mouse model for pelvic irradiation. ISME COMMUNICATIONS 2021; 1:24. [PMID: 36737646 PMCID: PMC9723693 DOI: 10.1038/s43705-021-00024-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 05/12/2021] [Accepted: 05/25/2021] [Indexed: 02/07/2023]
Abstract
Pelvic radiotherapy is known to evoke intestinal mucositis and dysbiosis. Currently, there are no effective therapies available to mitigate these injuries, which is partly due to a lack of insight into the events causing mucositis and dysbiosis. Here, the complex interplay between the murine host and its microbiome following pelvic irradiation was mapped by characterizing intestinal mucositis along with extensive 16S microbial profiling. We demonstrated important morphological and inflammatory implications within one day after exposure, thereby impairing intestinal functionality and inducing translocation of intraluminal bacteria into mesenteric lymph nodes as innovatively quantified by flow cytometry. Concurrent 16S microbial profiling revealed a delayed impact of pelvic irradiation on beta diversity. Analysis of composition of microbiomes identified biomarkers for pelvic irradiation. Among them, members of the families Ruminococcaceae, Lachnospiraceae and Porphyromonadaceae were differentially affected. Altogether, our unprecedented findings showed how pelvic irradiation evoked structural and functional changes in the intestine, which secondarily resulted in a microbiome shift. Therefore, the presented in vivo irradiation-gut-microbiome platform allows further research into the pathobiology of pelvic irradiation-induced intestinal mucositis and resultant dysbiosis, as well as the exploration of mitigating treatments including drugs and food supplements.
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Affiliation(s)
- Charlotte Segers
- Interdisciplinary Biosciences group, Belgian Nuclear Research Centre SCK CEN, Mol, Belgium
- Department of Bioscience Engineering, University of Antwerp, Antwerp, Belgium
| | - Mohamed Mysara
- Interdisciplinary Biosciences group, Belgian Nuclear Research Centre SCK CEN, Mol, Belgium
| | - Jürgen Claesen
- Interdisciplinary Biosciences group, Belgian Nuclear Research Centre SCK CEN, Mol, Belgium
- Department of Epidemiology and Data Science, Amsterdam UMC, VU University Amsterdam, Amsterdam, The Netherlands
| | - Sarah Baatout
- Interdisciplinary Biosciences group, Belgian Nuclear Research Centre SCK CEN, Mol, Belgium
- Department of Biotechnology, University of Ghent, Ghent, Belgium
| | - Natalie Leys
- Interdisciplinary Biosciences group, Belgian Nuclear Research Centre SCK CEN, Mol, Belgium
| | - Sarah Lebeer
- Department of Bioscience Engineering, University of Antwerp, Antwerp, Belgium
| | - Mieke Verslegers
- Interdisciplinary Biosciences group, Belgian Nuclear Research Centre SCK CEN, Mol, Belgium
| | - Felice Mastroleo
- Interdisciplinary Biosciences group, Belgian Nuclear Research Centre SCK CEN, Mol, Belgium.
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32
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Wang J, Garg S, Landes RD, Liu L, Fu Q, Seng J, Boerma M, Thrall K, Hauer-Jensen M, Pathak R. Differential Recovery of Small Intestinal Segments after Partial-Body Irradiation in Non-Human Primates. Radiat Res 2021; 196:204-212. [PMID: 34043805 DOI: 10.1667/rade-20-00272.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Accepted: 05/06/2021] [Indexed: 11/03/2022]
Abstract
In the event of a radiological attack or accident, it is more likely that the absorbed radiation dose will be heterogeneous, rather than uniformly distributed throughout the body. This type of uneven dose distribution is known as partial-body irradiation (PBI). Partial exposure of the vital organs, specifically the highly radiosensitive intestines, may cause death, if the injury is significant and the post-exposure recovery is considerably compromised. Here we investigated the recovery rate and extent of recovery from PBI-induced intestinal damage in large animals. Rhesus macaques (Macaca mulatta) were randomly divided into four groups: sham-irradiated (0 Gy), 8 Gy PBI, 11 Gy PBI and 14 Gy PBI. A single dose of ionizing radiation was delivered in the abdominal region using a uniform bilateral anteroposterior and posteroanterior technique. Irradiated animals were scheduled for euthanasia on days 10, 28 or 60 postirradiation, and sham-irradiated animals on day 60. Intestinal structural injuries were assessed via crypt depth, villus height, and mucosal surface length in the four different intestinal regions (duodenum, proximal jejunum, distal jejunum and ileum) using H&E staining. Higher radiation doses corresponded with more injury at 10 days post-PBI, and faster recovery. However, at 60 days post-PBI, damage was still evident in all regions of the intestine. The proximal and distal ends (duodenum and ileum, respectively) sustained less damage and recovered more fully than the jejunum.
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Affiliation(s)
- Junru Wang
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Sarita Garg
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Reid D Landes
- Department of Biostatistics, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Liya Liu
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Qiang Fu
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - John Seng
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Marjan Boerma
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | | | - Martin Hauer-Jensen
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Rupak Pathak
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, Arkansas
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Hollingsworth BA, Cassatt DR, DiCarlo AL, Rios CI, Satyamitra MM, Winters TA, Taliaferro LP. Acute Radiation Syndrome and the Microbiome: Impact and Review. Front Pharmacol 2021; 12:643283. [PMID: 34084131 PMCID: PMC8167050 DOI: 10.3389/fphar.2021.643283] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 03/04/2021] [Indexed: 12/12/2022] Open
Abstract
Study of the human microbiota has been a centuries-long endeavor, but since the inception of the National Institutes of Health (NIH) Human Microbiome Project in 2007, research has greatly expanded, including the space involving radiation injury. As acute radiation syndrome (ARS) is multisystemic, the microbiome niches across all areas of the body may be affected. This review highlights advances in radiation research examining the effect of irradiation on the microbiome and its potential use as a target for medical countermeasures or biodosimetry approaches, or as a medical countermeasure itself. The authors also address animal model considerations for designing studies, and the potential to use the microbiome as a biomarker to assess radiation exposure and predict outcome. Recent research has shown that the microbiome holds enormous potential for mitigation of radiation injury, in the context of both radiotherapy and radiological/nuclear public health emergencies. Gaps still exist, but the field is moving forward with much promise.
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Affiliation(s)
- Brynn A Hollingsworth
- Radiation and Nuclear Countermeasures Program (RNCP), Division of Allergy, Immunology and Transplantation (DAIT), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Rockville, MD, United States
| | - David R Cassatt
- Radiation and Nuclear Countermeasures Program (RNCP), Division of Allergy, Immunology and Transplantation (DAIT), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Rockville, MD, United States
| | - Andrea L DiCarlo
- Radiation and Nuclear Countermeasures Program (RNCP), Division of Allergy, Immunology and Transplantation (DAIT), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Rockville, MD, United States
| | - Carmen I Rios
- Radiation and Nuclear Countermeasures Program (RNCP), Division of Allergy, Immunology and Transplantation (DAIT), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Rockville, MD, United States
| | - Merriline M Satyamitra
- Radiation and Nuclear Countermeasures Program (RNCP), Division of Allergy, Immunology and Transplantation (DAIT), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Rockville, MD, United States
| | - Thomas A Winters
- Radiation and Nuclear Countermeasures Program (RNCP), Division of Allergy, Immunology and Transplantation (DAIT), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Rockville, MD, United States
| | - Lanyn P Taliaferro
- Radiation and Nuclear Countermeasures Program (RNCP), Division of Allergy, Immunology and Transplantation (DAIT), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Rockville, MD, United States
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Zhu S, Liang J, Zhu F, Zhang X, Xu M, Zhao K, Zeng L, Xu K. The effects of myeloablative or non-myeloablative total body irradiations on intestinal tract in mice. Biosci Rep 2021; 41:BSR20202993. [PMID: 33605406 PMCID: PMC7926181 DOI: 10.1042/bsr20202993] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 01/25/2021] [Accepted: 02/18/2021] [Indexed: 12/12/2022] Open
Abstract
Acute radiation injury caused by high-dose radiation exposure severely impedes the application of radiotherapy in cancer management. To deeply understand the side effects of radiation on intestinal tract, an irradiation murine model was applied and evaluated. C57BL/6 mice were given 4 Gy non-myeloablative irradiation, 8 Gy myeloablative irradiation and non-irradiation (control), respectively. Results demonstrated that the 8 Gy myeloablative irradiations significantly damaged the gut barrier along with decreasing MECA32 and ZO-1. However, a slight increase in MECA32 and ZO-1 was detected in the 4 Gy non-myeloablative irradiations treatment from day 5 to day 10. Further, the irradiations affected the expression of P38 and JNK mitogen-activated protein kinase (MAPK) but not ERK1/2 MAPK signal pathway. Moreover, irradiation had adverse effects on hematopoietic system, altered the numbers and percentages of intestinal inflammatory cells. The IL-17/AhR had big increase in the gut of 4 Gy irradiation mice at day 10 compared with other groups. Both 8 Gy myeloablative and 4 Gy non-myeloablative irradiation disturbed the levels of short-chain fatty acids (SCFAs) in intestine. Meanwhile, high dosage of irradiation decreased the intestinal bacterial diversity and altered the community composition. Importantly, the fatty acids generating bacteria Bacteroidaceae and Ruminococcaceae played key roles in community distribution and SCFAs metabolism after irradiation. Collectively, the irradiation induced gut barrier damage with dosages dependent that led to the decreased p38 MAPK and increased JNK MAPK, unbalanced the mononuclear cells (MNCs) of gut, disturbed intestinal bacterial community and SCFAs level.
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Affiliation(s)
- Shengyun Zhu
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, Jiangsu 221002, China
- Department of Hematology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, China
- The Key Laboratory of Bone Marrow Stem Cell, Jiangsu 221002, China
| | - Jing Liang
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, Jiangsu 221002, China
| | - Feng Zhu
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, Jiangsu 221002, China
- Department of Hematology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, China
- The Key Laboratory of Bone Marrow Stem Cell, Jiangsu 221002, China
| | - Xue Zhang
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, Jiangsu 221002, China
| | - Mengdi Xu
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, Jiangsu 221002, China
| | - Kai Zhao
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, Jiangsu 221002, China
- Department of Hematology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, China
- The Key Laboratory of Bone Marrow Stem Cell, Jiangsu 221002, China
| | - Lingyu Zeng
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, Jiangsu 221002, China
- Department of Hematology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, China
- The Key Laboratory of Bone Marrow Stem Cell, Jiangsu 221002, China
| | - Kailin Xu
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, Jiangsu 221002, China
- Department of Hematology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, China
- The Key Laboratory of Bone Marrow Stem Cell, Jiangsu 221002, China
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Effect of irradiation on the expression of E-cadherin and β-catenin in early and late radiation sequelae of the urinary bladder and its modulation by NF-κB inhibitor thalidomide. Strahlenther Onkol 2021; 197:537-546. [PMID: 33688971 PMCID: PMC8154806 DOI: 10.1007/s00066-021-01751-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 02/08/2021] [Indexed: 12/19/2022]
Abstract
Purpose In a previous study we have shown in a mouse model that administration of nuclear factor-kappa B (NF-κB) inhibitor thalidomide has promising therapeutic effects on early radiation cystitis (ERC) and late radiation sequelae (LRS) of the urinary bladder. The aim of this study was to evaluate in the same mice the effect of thalidomide on adherens junction (AJ) proteins in ERC and LRS. Methods Urothelial expressions of E‑cadherin and β‑catenin were assessed by immunohistochemistry in formalin-fixed paraffin-embedded (FFPE) bladder specimens over 360 days post single-dose irradiation on day 0. First, the effect of irradiation on AJ expression and then effects of thalidomide on irradiation-induced AJ alterations were assessed using three different treatment times. Results Irradiation provoked a biphasic upregulation of E‑cadherin and β‑catenin in the early phase. After a mild decrease of E‑cadherin and a pronounced decrease of β‑catenin at the end of the early phase, both increased again in the late phase. Early administration of thalidomide (day 1–15) resulted in a steeper rise in the first days, an extended and increased expression at the end of the early phase and a higher expression of β‑catenin alone at the beginning of the late phase. Conclusion Upregulation of AJ proteins is an attempt to compensate irradiation-induced impairment of urothelial barrier function. Early administration of thalidomide improves these compensatory mechanisms by inhibiting NF-κB signaling and its interfering effects.
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Deluco B, Fourie KR, Simko OM, Wilson HL. Localization of Claudin-3 and Claudin-4 within the Small Intestine of newborn piglets. Physiol Rep 2021; 9:e14717. [PMID: 33523589 PMCID: PMC7849452 DOI: 10.14814/phy2.14717] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 12/17/2020] [Accepted: 12/22/2020] [Indexed: 12/26/2022] Open
Abstract
Piglets must acquire passive immunity through colostrum within hours after birth to survive. How colostral macromolecules traverse the small intestinal epithelium may include nonselective pinocytosis and paracellular transport through tight junction proteins located between epithelial cells. Claudin proteins-3 and -4 contribute to the epithelial tight junctions (TJs) on the apical aspect of lateral surfaces of intestinal epithelial cells (IECs) where they help regulate ion and macromolecule movement across the intestinal epithelium. Throughout the small intestine of newborn piglets, Claudin-3 was localized to the lateral and basolateral surface of intestinal epithelial cells as well as the membrane of large vacuoles. In the duodenum and jejunum, Claudin-4 was localized to the apical surface independent of tight junction regions. In the ileum, Claudin-4 was localized to the lateral and basolateral surfaces indicating region-specific differences and noncanonical patterns of Claudin-4 localization independent of tight junction regions. Understanding the timing of changes in surface localization of Claudin-3 and Claudin-4 and how they may coincide with changes in small intestinal permeability may help develop new protective strategies against infectious diseases within newborn piglets.
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Affiliation(s)
- Brodie Deluco
- Vaccine and Infectious Disease Organization‐International Vaccine Centre (VIDO‐InterVac)University of SaskatchewanSaskatoonSKCanada
| | - Kezia R Fourie
- Vaccine and Infectious Disease Organization‐International Vaccine Centre (VIDO‐InterVac)University of SaskatchewanSaskatoonSKCanada
| | - Olena M Simko
- Vaccine and Infectious Disease Organization‐International Vaccine Centre (VIDO‐InterVac)University of SaskatchewanSaskatoonSKCanada
| | - Heather L Wilson
- Vaccine and Infectious Disease Organization‐International Vaccine Centre (VIDO‐InterVac)University of SaskatchewanSaskatoonSKCanada
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McCarty MF, Lerner A. Perspective: Prospects for Nutraceutical Support of Intestinal Barrier Function. Adv Nutr 2020; 12:316-324. [PMID: 33126251 PMCID: PMC8243597 DOI: 10.1093/advances/nmaa139] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 08/28/2020] [Accepted: 09/24/2020] [Indexed: 12/12/2022] Open
Abstract
Impairment of intestinal barrier function is linked to certain pathologies and to aging, and can be a cause of bacterial infections, systemic and hepatic inflammation, food allergies, and autoimmune disorders. The formation and maintenance of intestinal tight junctions is supported by glucagon-like peptide-2 (GLP-2), which via insulin-like growth factor I activity boosts phosphoinositide 3-kinase/Akt/mammalian target of rapamycin complex 1 (PI3K/Akt/mTORC1) signaling in enterocytes. 5'-AMP-activated protein kinase (AMPK) activity as well as estrogen receptor-β (ERβ) activity are also protective in this regard. Conversely, activation of mitogen-activated protein kinases (MAPKs) and cellular Src (c-Src) under inflammatory conditions can induce dissociation of tight junctions. Hence, nutraceuticals that promote GLP-2 secretion from L cells-effective pre/probiotics, glycine, and glutamine-as well as diets rich in soluble fiber or resistant starch, can support intestinal barrier function. AMPK activators-notably berberine and the butyric acid produced by health-promoting microflora-are also beneficial in this regard, as are soy isoflavones, which function as selective agonists for ERβ. The adverse impact of MAPK and c-Src overactivation on the intestinal barrier can be combatted with various antioxidant measures, including phycocyanobilin, phase 2-inducer nutraceuticals, and N-acetylcysteine. These considerations suggest that rationally designed functional foods or complex supplementation programs could have clinical potential for supporting and restoring healthful intestinal barrier function.
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Wang M, Dong Y, Wu J, Li H, Zhang Y, Fan S, Li D. Baicalein ameliorates ionizing radiation-induced injuries by rebalancing gut microbiota and inhibiting apoptosis. Life Sci 2020; 261:118463. [PMID: 32950576 DOI: 10.1016/j.lfs.2020.118463] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 09/05/2020] [Accepted: 09/13/2020] [Indexed: 12/20/2022]
Abstract
AIMS Ionizing radiation (IR) induces injuries to the hematopoietic and intestinal systems, which are the leading cause of death. Baicalein, a plant-derived flavonoid, shows anti-oxidative stress, anti-apoptosis, anti-inflammation effects in many diseases. In this study, we evaluated the effects and mechanism of baicalein on IR induced intestinal and hematopoietic injuries. MAIN METHODS Mice were divided into three groups: Control, IR and IR + Baicalein. All of mice were intraperitoneally administered with 100 mg/kg baicalein or normal saline for 1 h before IR, and then a day post-IR. The changes in intestinal structure, function and molecular expression were observed by pathological experiments and western blot. 16S rRNA gene sequencing was performed to analyze gut microbiota and further predicted metabolic pathways through Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis. Hematopoietic function was evaluated by peripheral blood cells count and by flow cytometry analysis of hematopoietic cells composition. KEY FINDINGS Baicalein improved intestinal structure and the ability of proliferation and regeneration after mice exposed to IR, in which the rebalance of gut microbial composition played an important role. KEGG results showed that p53-related apoptotic pathways played important roles in the composition changes of gut microbiota. Then we observed that baicalein inhibited the activation of p53 and p53 mediated mitochondrial apoptosis and death receptor apoptosis in the intestine. In addition, IR induced injuries to hematopoietic system also could be ameliorated by baicalein. SIGNIFICANCE These results provide new insights into the mechanism of baicalein and support the potential of baicalein as a radioprotective medicine.
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Affiliation(s)
- Meifang Wang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Yinping Dong
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Jing Wu
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Hongyan Li
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Yuanyang Zhang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Saijun Fan
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Deguan Li
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China.
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do Nascimento LCP, Neto JPRC, de Andrade Braga V, Lagranha CJ, de Brito Alves JL. Maternal exposure to high-fat and high-cholesterol diet induces arterial hypertension and oxidative stress along the gut-kidney axis in rat offspring. Life Sci 2020; 261:118367. [PMID: 32882266 DOI: 10.1016/j.lfs.2020.118367] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 08/24/2020] [Accepted: 08/28/2020] [Indexed: 10/23/2022]
Abstract
AIMS Evaluate the effects of maternal high fat and high cholesterol (HFHC) diet consumption on blood pressure (BP), renal function and oxidative stress along the gut-kidney axis in male and female rat offspring. MATERIALS AND METHODS Pregnant rats were fed with a control (CTL) or HFHC diet during pregnancy and lactation. At 90 days, BP was assessed by tail-cuff plethysmography, and urinary and biochemical variables were measured. Biomarkers for oxidative stress, enzymatic antioxidant defense (activity of superoxide dismutase-SOD, catalase, and glutathione-S-transferase-GST) and nonenzymatic antioxidant defense (thiols content) were evaluated in the colon and renal cortex. KEY FINDINGS Male and female offspring from dams fed with a HFHC diet presented increased BP when compared to their respective CTL group. Male offspring from dams fed with HFHC diet showed reduced GST activity and thiols content in the colon, reduced SOD activity in the renal cortex and decreased urinary creatinine excretion when compared to the CTL group. Regarding female offspring, catalase activity and thiols content were reduced in the colon when compared to CTL group. Although lipid peroxidation had been increased in the renal cortex of HFHC female offspring, the CAT and SOD enzymatic antioxidant acitivities (CAT and SOD) were increased in the renal cortex of female offspring when compared with male offspring; and the renal function was not impaired by maternal HFHC diet consumption. SIGNIFICANCE HFHC diet during pregnancy and lactation induces sex-specific oxidative stress along the gut-kidney axis in offspring, which might induce renal dysfunction and arterial hypertension in later life.
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Affiliation(s)
| | | | - Valdir de Andrade Braga
- Department of Biotechnology, Biotechnology Center, Federal University of Paraíba, João Pessoa, Brazil
| | - Claudia Jacques Lagranha
- Laboraroty of Biochemistry and Exercise Biochemistry, Federal University of Pernambuco, Vitória de Santo Antão, PE, Brazil
| | - José Luiz de Brito Alves
- Department of Nutrition, Health Sciences Center, Federal University of Paraiba, João Pessoa, Brazil.
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Extracellular vesicles derived from mesenchymal stromal cells mitigate intestinal toxicity in a mouse model of acute radiation syndrome. Stem Cell Res Ther 2020; 11:371. [PMID: 32854778 PMCID: PMC7457304 DOI: 10.1186/s13287-020-01887-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 08/04/2020] [Accepted: 08/17/2020] [Indexed: 02/07/2023] Open
Abstract
Background Human exposure to high doses of radiation resulting in acute radiation syndrome and death can rapidly escalate to a mass casualty catastrophe in the event of nuclear accidents or terrorism. The primary reason is that there is presently no effective treatment option, especially for radiation-induced gastrointestinal syndrome. This syndrome results from disruption of mucosal barrier integrity leading to severe dehydration, blood loss, and sepsis. In this study, we tested whether extracellular vesicles derived from mesenchymal stromal cells (MSC) could reduce radiation-related mucosal barrier damage and reduce radiation-induced animal mortality. Methods Human MSC-derived extracellular vesicles were intravenously administered to NUDE mice, 3, 24, and 48 h after lethal whole-body irradiation (10 Gy). Integrity of the small intestine epithelial barrier was assessed by morphologic analysis, immunostaining for tight junction protein (claudin-3), and in vivo permeability to 4 kDa FITC-labeled dextran. Renewal of the small intestinal epithelium was determined by quantifying epithelial cell apoptosis (TUNEL staining) and proliferation (Ki67 immunostaining). Statistical analyses were performed using one-way ANOVA followed by a Tukey test. Statistical analyses of mouse survival were performed using Kaplan-Meier and Cox methods. Results We demonstrated that MSC-derived extracellular vesicle treatment reduced by 85% the instantaneous mortality risk in mice subjected to 10 Gy whole-body irradiation and so increased their survival time. This effect could be attributed to the efficacy of MSC-derived extracellular vesicles in reducing mucosal barrier disruption. We showed that the MSC-derived extracellular vesicles improved the renewal of the small intestinal epithelium by stimulating proliferation and inhibiting apoptosis of the epithelial crypt cells. The MSC-derived extracellular vesicles also reduced radiation-induced mucosal permeability as evidenced by the preservation of claudin-3 immunostaining at the tight junctions of the epithelium. Conclusions MSC-derived extracellular vesicles promote epithelial repair and regeneration and preserve structural integrity of the intestinal epithelium in mice exposed to radiation-induced gastrointestinal toxicity. Our results suggest that the administration of MSC-derived extracellular vesicles could be an effective therapy for limiting acute radiation syndrome.
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Circulating Ouabain Modulates Expression of Claudins in Rat Intestine and Cerebral Blood Vessels. Int J Mol Sci 2020; 21:ijms21145067. [PMID: 32709081 PMCID: PMC7404321 DOI: 10.3390/ijms21145067] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 07/13/2020] [Accepted: 07/14/2020] [Indexed: 12/20/2022] Open
Abstract
The ability of exogenous low ouabain concentrations to affect claudin expression and therefore epithelial barrier properties was demonstrated previously in cultured cell studies. We hypothesized that chronic elevation of circulating ouabain in vivo can affect the expression of claudins and tight junction permeability in different tissues. We tested this hypothesis in rats intraperitoneally injected with ouabain (1 μg/kg) for 4 days. Rat jejunum, colon and brain frontal lobes, which are variable in the expressed claudins and tight junction permeability, were examined. Moreover, the porcine jejunum cell line IPEC-J2 was studied. In IPEC-J2-cells, ouabain (10 nM, 19 days of incubation) stimulated epithelial barrier formation, increased transepithelial resistance and the level of cSrc-kinase activation by phosphorylation, accompanied with an increased expression of claudin-1, -5 and down-regulation of claudin-12; the expression of claudin-3, -4, -8 and tricellulin was not changed. In the jejunum, chronic ouabain increased the expression of claudin-1, -3 and -5 without an effect on claudin-2 and -4 expression. In the colon, only down-regulation of claudin-3 was observed. Chronic ouabain protected the intestine transepithelial resistance against functional injury induced by lipopolysaccharide treatment or by modeled acute microgravity; this regulation was most pronounced in the jejunum. Claudin-1 was also up-regulated in cerebral blood vessels. This was associated with reduction of claudin-3 expression while the expression of claudin-5 and occludin was not affected. Altogether, our results confirm that circulating ouabain can functionally and tissue-specifically affect barrier properties of epithelial and endothelial tissues via Na,K-ATPase-mediated modulation of claudins expression.
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Shukla PK, Meena AS, Gangwar R, Szabo E, Balogh A, Chin Lee S, Vandewalle A, Tigyi G, Rao R. LPAR2 receptor activation attenuates radiation-induced disruption of apical junctional complexes and mucosal barrier dysfunction in mouse colon. FASEB J 2020; 34:11641-11657. [PMID: 32654268 DOI: 10.1096/fj.202000544r] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 05/28/2020] [Accepted: 06/15/2020] [Indexed: 01/13/2023]
Abstract
The tight junction (TJ) and barrier function of colonic epithelium is highly sensitive to ionizing radiation. We evaluated the effect of lysophosphatidic acid (LPA) and its analog, Radioprotein-1, on γ-radiation-induced colonic epithelial barrier dysfunction using Caco-2 and m-ICC12 cell monolayers in vitro and mice in vivo. Mice were subjected to either total body irradiation (TBI) or partial body irradiation (PBI-BM5). Intestinal barrier function was assessed by analyzing immunofluorescence localization of TJ proteins, mucosal inulin permeability, and plasma lipopolysaccharide (LPS) levels. Oxidative stress was analyzed by measuring protein thiol oxidation and antioxidant mRNA. In Caco-2 and m-ICC12 cell monolayers, LPA attenuated radiation-induced redistribution of TJ proteins, which was blocked by a Rho-kinase inhibitor. In mice, TBI and PBI-BM5 disrupted colonic epithelial tight junction and adherens junction, increased mucosal permeability, and elevated plasma LPS; TJ disruption by TBI was more severe in Lpar2-/- mice compared to wild-type mice. RP1, administered before or after irradiation, alleviated TBI and PBI-BM5-induced TJ disruption, barrier dysfunction, and endotoxemia accompanied by protein thiol oxidation and downregulation of antioxidant gene expression, cofilin activation, and remodeling of the actin cytoskeleton. These data demonstrate that LPAR2 receptor activation prevents and mitigates γ-irradiation-induced colonic mucosal barrier dysfunction and endotoxemia.
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Affiliation(s)
- Pradeep K Shukla
- Department of Physiology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Avtar S Meena
- Department of Physiology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Ruchika Gangwar
- Department of Physiology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Erzsebet Szabo
- Department of Physiology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Andrea Balogh
- Department of Physiology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Sue Chin Lee
- Department of Physiology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Alain Vandewalle
- INSERM U773, Centre de Recherche Biomédicale, Bichat-Beaujon, CRB3, UFR de Médecine, Paris Cedex 18, France
| | - Gabor Tigyi
- Department of Physiology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, USA
| | - RadhaKrishna Rao
- Department of Physiology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, USA
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Artificial Sweeteners Disrupt Tight Junctions and Barrier Function in the Intestinal Epithelium through Activation of the Sweet Taste Receptor, T1R3. Nutrients 2020; 12:nu12061862. [PMID: 32580504 PMCID: PMC7353258 DOI: 10.3390/nu12061862] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 06/18/2020] [Accepted: 06/20/2020] [Indexed: 12/20/2022] Open
Abstract
The breakdown of the intestinal epithelial barrier and subsequent increase in intestinal permeability can lead to systemic inflammatory diseases and multiple-organ failure. Nutrition impacts the intestinal barrier, with dietary components such as gluten increasing permeability. Artificial sweeteners are increasingly consumed by the general public in a range of foods and drinks. The sweet taste receptor (T1R3) is activated by artificial sweeteners and has been identified in the intestine to play a role in incretin release and glucose transport; however, T1R3 has not been previously linked to intestinal permeability. Here, the intestinal epithelial cell line, Caco-2, was used to study the effect of commonly-consumed artificial sweeteners, sucralose, aspartame and saccharin, on permeability. At high concentrations, aspartame and saccharin were found to induce apoptosis and cell death in intestinal epithelial cells, while at low concentrations, sucralose and aspartame increased epithelial barrier permeability and down-regulated claudin 3 at the cell surface. T1R3 knockdown was found to attenuate these effects of artificial sweeteners. Aspartame induced reactive oxygen species (ROS) production to cause permeability and claudin 3 internalization, while sweetener-induced permeability and oxidative stress was rescued by the overexpression of claudin 3. Taken together, our findings demonstrate that the artificial sweeteners sucralose, aspartame, and saccharin exert a range of negative effects on the intestinal epithelium through the sweet taste receptor T1R3.
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Gupta R, Yin L, Grosche A, Lin S, Xu X, Guo J, Vaught LA, Okunieff PG, Vidyasagar S. An Amino Acid-Based Oral Rehydration Solution Regulates Radiation-Induced Intestinal Barrier Disruption in Mice. J Nutr 2020; 150:1100-1108. [PMID: 32133527 DOI: 10.1093/jn/nxaa025] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 01/06/2020] [Accepted: 01/28/2020] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Radiotherapy inadvertently affects gastrointestinal (GI) epithelial cells, causing intestinal barrier disruption and increased permeability. OBJECTIVE We examined the effect of amino acid-based oral rehydration solution (AA-ORS) on radiation-induced changes of intestinal barrier function and epithelial tight junctions (TJs) in a randomized experimental study using a total-body irradiation (TBI) mouse model. METHODS Eight-week-old male Swiss mice received a single-dose TBI (0, 1, 3, or 5 Gy), and subsequent gastric gavage with AA-ORS (threonine, valine, serine, tyrosine, and aspartic acid) or saline for 2 or 6 d. Intestinal barrier function of mouse ileum was characterized by electrophysiological analysis of conductance, anion selectivity, and paracellular permeability [fluorescein isothiocyanate (FITC)-dextran]. Ultrastructural changes of TJs were evaluated by transmission electron microscopy. Membrane protein and mRNA expression of claudin-1, -2, -3, -5, and -7, occludin, and E-cadherin were analyzed with western blot, qPCR, and immunohistochemistry. Nonparametric tests were used to compare treatment-dose differences for each time point. RESULTS Saline-treated mice had a higher conductance at doses as low as 3 Gy, and as early as 2 d post-TBI compared with 0 Gy (P < 0.001). Paracellular permeability and dilution potential were increased 6 d after 5 Gy TBI (P < 0.001). Conductance decreased with AA-ORS after 2 d in 3-Gy and 5-Gy mice (P < 0.05 and P < 0.001), and on day 6 after 5 Gy TBI (P < 0.001). Anion selectivity and FITC permeability decreased from 0.73 ± 0.02 to 0.61 ± 0.03 pCl/pNa (P < 0.01) and from 2.7 ± 0.1 × 105 to 2.1 ± 0.1 × 105 RFU (P < 0.001) in 5-Gy mice treated with AA-ORS for 6 d compared with saline. Irradiation-induced ultrastructural changes of TJs characterized by decreased electron density and gap formation improved with AA-ORS. Reduced claudin-1, -3, and -7 membrane expression after TBI recovered with AA-ORS within 6 d, whereas claudin-2 decreased indicating restitution of TJ proteins. CONCLUSIONS Radiation-induced functional and structural disruption of the intestinal barrier in mice is reversed by AA-ORS rendering AA-ORS a potential treatment option in prospective clinical trials in patients with gastrointestinal barrier dysfunction.
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Affiliation(s)
- Reshu Gupta
- Entrinsic Health Solutions, Norwood, MA, USA
| | - Liangjie Yin
- Department of Radiation Oncology, University of Florida Shands Cancer Center, Gainesville, FL, USA
| | | | | | - Xiaodong Xu
- Department of Radiation Oncology, University of Florida Shands Cancer Center, Gainesville, FL, USA
| | - Jing Guo
- Department of Radiation Oncology, University of Florida Shands Cancer Center, Gainesville, FL, USA
| | - Lauren A Vaught
- Department of Radiation Oncology, University of Florida Shands Cancer Center, Gainesville, FL, USA
| | - Paul G Okunieff
- Department of Radiation Oncology, University of Florida Shands Cancer Center, Gainesville, FL, USA
| | - Sadasivan Vidyasagar
- Department of Radiation Oncology, University of Florida Shands Cancer Center, Gainesville, FL, USA
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Akpolat M, Oz ZS, Gulle K, Hamamcioglu AC, Bakkal BH, Kececi M. X irradiation induced colonic mucosal injury and the detection of apoptosis through PARP-1/p53 regulatory pathway. Biomed Pharmacother 2020; 127:110134. [PMID: 32361637 DOI: 10.1016/j.biopha.2020.110134] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 03/25/2020] [Accepted: 03/27/2020] [Indexed: 12/13/2022] Open
Abstract
This study aimed to explore whether PARP-1 regulatory pathway mediated X irradiation induced cell cycle arrest and apoptosis or not. In this regard, colonic mucosal injury caused by whole-body X-irradiation induced apoptosis through PARP-1, caspase 3 and p53 regulatory pathway were evaluated in experimental rat models. Eighteen Wistar albino rats were divided into three groups. Two radiation groups received 8.3 Gy dose of whole-body X-irradiation as a single dose and the control group received physiological saline intraperitoneally. Radiation groups were sacrificed after 6 h and 4 days of irradiation. PARP-1 and caspase 3 expression in the nuclei of colonic crypt cells significantly increased 6 h after irradiation, and declined 4 days after irradiation. In conflict with other studies that reported p53 as not being expressed widely in colonic mucosa, in our study the expressions of p53 were elevated both in the cytoplasm and in the nucleus of the crypt cells, especially 6 h after irradiation. In the radiation groups, colonic mucosal injury score was significantly elevated compared with that of the control group. Our data demonstrated that PARP-1, caspase-3 and p53 expression increased in colonic mucosa 6 h after irradiation.
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Affiliation(s)
- Meryem Akpolat
- Zonguldak Bulent Ecevit University, Faculty of Medicine, Department of Histology and Embryology, Zonguldak, Turkey.
| | - Zehra Safi Oz
- Zonguldak Bulent Ecevit University Faculty of Medicine, Department of Medical Biology, Zonguldak, Turkey.
| | - Kanat Gulle
- Suleyman Demirel University, Faculty of Medicine, Department of Histology and Embryology, Isparta, Turkey.
| | - Ayse C Hamamcioglu
- Zonguldak Bulent Ecevit University, Faculty of Pharmacy, Department of Biochemistry, Zonguldak, Turkey.
| | - Bekir H Bakkal
- Zonguldak Bulent Ecevit University, Faculty of Medicine, Department of Radiation Oncology, Zonguldak, Turkey.
| | - Mete Kececi
- Zonguldak Bulent Ecevit University, Faculty of Medicine, Department of Histology and Embryology, Zonguldak, Turkey
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Zhao Z, Cheng W, Qu W, Shao G, Liu S. Antibiotic Alleviates Radiation-Induced Intestinal Injury by Remodeling Microbiota, Reducing Inflammation, and Inhibiting Fibrosis. ACS OMEGA 2020; 5:2967-2977. [PMID: 32095719 PMCID: PMC7033964 DOI: 10.1021/acsomega.9b03906] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 01/20/2020] [Indexed: 05/05/2023]
Abstract
Radiation-induced intestinal injury is a common complication of abdominal radiation therapy. However, the pathological features of radiation-induced intestinal injury and its therapeutic regimen are not very clear. The aim of this study was to investigate the effects of antibiotic pretreatment on radiation-induced intestinal injury. Abdominal radiation disrupted the intestinal microbiota balance and significantly reduced bacterial diversity in mice. Antibiotic cocktail (Abx) pretreatment effectively removed the intestinal microbiota of mice, and metronidazole also reduced the diversity of intestinal bacteria to some extent. Two antibiotic pretreatment regimens improved the reconstitution ability of the gut microbiota in mice after radiation. Further experiments showed that Abx pretreatment effectively reduced the content of lipopolysaccharide (LPS) and inhibited the TLR4/MyD88/NF-κB signaling pathway in the ileum. In addition, Abx pretreatment regulated macrophage cell polarization in the ileum, downregulated TGF-β1, phosphorylated Smad-3 and α-SMA protein levels, and upregulated E-cadherin protein expression. Eventually, Abx pretreatment significantly improved the survival rate and attenuated intestinal injury of mice after radiation by reducing inflammation and preventing intestinal fibrosis. These results revealed that antibiotic pretreatment can effectively alleviate gut microbiota turbulence and intestinal damage caused by abdominal radiation in mice. Collectively, these findings add to our understanding of the pathogenesis of radiation enteritis.
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Affiliation(s)
- Zhenguo Zhao
- Department
of General Surgery, The Affiliated Jiangyin
Hospital of Southeast University Medical College, Wuxi, Jiangsu 214400, China
| | - Wei Cheng
- Department
of General Surgery, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese
Medicine, Nanjing 210029, China
| | - Wei Qu
- Department
of Pharmacy, The Affiliated Jiangyin Hospital
of Southeast University Medical College, Wuxi, Jiangsu 214400, China
| | - Guoyi Shao
- Department
of General Surgery, The Affiliated Jiangyin
Hospital of Southeast University Medical College, Wuxi, Jiangsu 214400, China
- E-mail: (G.S.)
| | - Shuanghai Liu
- Department
of General Surgery, The Affiliated Jiangyin
Hospital of Southeast University Medical College, Wuxi, Jiangsu 214400, China
- E-mail: (S.L.)
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Farhood B, Hassanzadeh G, Amini P, Shabeeb D, Musa AE, Khodamoradi E, Mohseni M, Aliasgharzadeh A, Moradi H, Najafi M. Mitigation of Radiation-induced Gastrointestinal System Injury using Resveratrol or Alpha-lipoic Acid: A Pilot Histopathological Study. Antiinflamm Antiallergy Agents Med Chem 2020; 19:413-424. [PMID: 31713500 DOI: 10.2174/1871523018666191111124028] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 10/05/2019] [Accepted: 10/20/2019] [Indexed: 06/10/2023]
Abstract
AIM In this study, we aimed to determine possible mitigation of radiationinduced toxicities in the duodenum, jejunum and colon using post-exposure treatment with resveratrol and alpha-lipoic acid. BACKGROUND After the bone marrow, gastrointestinal system toxicity is the second critical cause of death following whole-body exposure to radiation. Its side effects reduce the quality of life of patients who have undergone radiotherapy. Resveratrol has an antioxidant effect and stimulates DNA damage responses (DDRs). Alpha-lipoic acid neutralizes free radicals via the recycling of ascorbic acid and alpha-tocopherol. OBJECTIVE This study is a pilot investigation of the mitigation of enteritis using resveratrol and alpha-lipoic acid following histopathological study. METHODS 60 male mice were randomly assigned to six groups; control, resveratrol treatment, alpha-lipoic acid treatment, whole-body irradiation, irradiation plus resveratrol, and irradiation plus alpha-lipoic acid. The mice were irradiated with a single dose of 7 Gy from a cobalt-60 gamma-ray source. Treatment with resveratrol or alpha-lipoic acid started 24 h after irradiation and continued for 4 weeks. All mice were sacrificed after 30 days for histopathological evaluation of radiation-induced toxicities in the duodenum, jejunum and colon. RESULTS AND DISCUSSION Exposure to radiation caused mild to severe damages to vessels, goblet cells and villous. It also led to significant infiltration of macrophages and leukocytes, especially in the colon. Both resveratrol and alpha-lipoic acid were able to mitigate morphological changes. However, they could not mitigate vascular injury. CONCLUSION Resveratrol and alpha-lipoic acid could mitigate radiation-induced injuries in the small and large intestine. A comparison between these agents showed that resveratrol may be a more effective mitigator compared to alpha-lipoic acid.
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Affiliation(s)
- Bagher Farhood
- Department of Medical Physics and Radiology, Faculty of Paramedical Sciences, Kashan University of Medical Sciences, Kashan, Iran
| | - Gholamreza Hassanzadeh
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Peyman Amini
- Department of Radiology, Faculty of Paramedical, Tehran University of Medical Sciences, Tehran, Iran
| | - Dheyauldeen Shabeeb
- Department of Physiology, College of Medicine, University of Misan, Misan, Iraq
| | - Ahmed Eleojo Musa
- Department of Medical Physics, Tehran University of Medical Sciences, Tehran, Iran
| | - Ehsan Khodamoradi
- Department of Radiology and Nuclear Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mehran Mohseni
- Department of Medical Physics and Radiology, Faculty of Paramedical Sciences, Kashan University of Medical Sciences, Kashan, Iran
| | - Akbar Aliasgharzadeh
- Department of Medical Physics and Radiology, Faculty of Paramedical Sciences, Kashan University of Medical Sciences, Kashan, Iran
| | - Habiballah Moradi
- Department of Medical Physics and Radiology, Faculty of Paramedical Sciences, Kashan University of Medical Sciences, Kashan, Iran
| | - Masoud Najafi
- Department of Radiology and Nuclear Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
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48
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Lu L, Li W, Chen L, Su Q, Wang Y, Guo Z, Lu Y, Liu B, Qin S. Radiation-induced intestinal damage: latest molecular and clinical developments. Future Oncol 2019; 15:4105-4118. [PMID: 31746639 DOI: 10.2217/fon-2019-0416] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Aim: To systematically review the prophylactic and therapeutic interventions for reducing the incidence or severity of intestinal symptoms among cancer patients receiving radiotherapy. Materials & methods: A literature search was conducted in the PubMed database using various search terms, including 'radiation enteritis', 'radiation enteropathy', 'radiation-induced intestinal disease', 'radiation-induced intestinal damage' and 'radiation mucositis'. The search was limited to in vivo studies, clinical trials and meta-analyses published in English with no limitation on publication date. Other relevant literature was identified based on the reference lists of selected studies. Results: The pathogenesis of acute and chronic radiation-induced intestinal damage as well as the prevention and treatment approaches were reviewed. Conclusion: There is inadequate evidence to strongly support the use of a particular strategy to reduce radiation-induced intestinal damage. More high-quality randomized controlled trials are required for interventions with limited evidence suggestive of potential benefits.
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Affiliation(s)
- Lina Lu
- School of Nuclear Science & Technology, Lanzhou University, Lanzhou 730000, Gansu, PR China.,School of Chemical Engineering, Northwest Minzu University, Lanzhou 730000, Gansu, PR China
| | - Wenjun Li
- Key Laboratory of Biology & Bioresource Utilization, Yantai Institute of Costal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China.,Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, PR China
| | - Lihua Chen
- School of Chemical Engineering, Northwest Minzu University, Lanzhou 730000, Gansu, PR China
| | - Qiong Su
- School of Chemical Engineering, Northwest Minzu University, Lanzhou 730000, Gansu, PR China
| | - Yanbin Wang
- School of Chemical Engineering, Northwest Minzu University, Lanzhou 730000, Gansu, PR China
| | - Zhong Guo
- Medical College of Northwest Minzu University, Lanzhou 730000, Gansu, PR China
| | - Yongjuan Lu
- School of Chemical Engineering, Northwest Minzu University, Lanzhou 730000, Gansu, PR China
| | - Bin Liu
- School of Nuclear Science & Technology, Lanzhou University, Lanzhou 730000, Gansu, PR China.,School of Stomatology, Lanzhou University, Lanzhou 730000, Gansu, PR China
| | - Song Qin
- Key Laboratory of Biology & Bioresource Utilization, Yantai Institute of Costal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China.,Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, PR China
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49
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Min H, Kim JS, Ahn J, Shim YH. Gliadin Intake Causes Disruption of the Intestinal Barrier and an Increase in Germ Cell Apoptosis in A Caenorhabditis Elegans Model. Nutrients 2019; 11:E2587. [PMID: 31717869 PMCID: PMC6893585 DOI: 10.3390/nu11112587] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 10/23/2019] [Indexed: 01/15/2023] Open
Abstract
Gliadin is a major protein component of gluten and causes gluten toxicity through intestinal stress. We previously showed that gliadin intake induces oxidative stress in the intestine and reduces fertility in a Caenorhabditis elegans model. To elucidate the possible link between intestinal stress and reproduction, changes in the intestine and germ cells of C. elegans after gliadin intake were examined at the molecular level. Gliadin intake increased reactive oxygen species (ROS) production in the intestine, decreased intestinal F-actin levels, and increased germ cell apoptosis. These gliadin-triggered effects were suppressed by antioxidant treatment. These results suggest that ROS production in the intestine induced by gliadin intake causes disruption of intestinal integrity and increases germ cell apoptosis. Gliadin-induced germ cell apoptosis (GIGA) was suppressed by depletion of cep-1, ced-13, egl-1, or mpk-1. However, HUS-1 was not activated, suggesting that GIGA is activated through the mitogen-activated protein kinase (MAPK) pathway and is CEP-1-dependent but is a separate pathway from that controlling the DNA damage response. Taken together, our results suggest that gliadin causes intestinal barrier disruption through ROS production and interacts with the germ cells to reduce fertility through GIGA.
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Affiliation(s)
- Hyemin Min
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea
| | - Ji-Sun Kim
- Division of Nutrition and Metabolism Research, Korea Food Research Institute, Jeollabuk-do 55365, Korea; (J.-S.K.); (J.A.)
| | - Jiyun Ahn
- Division of Nutrition and Metabolism Research, Korea Food Research Institute, Jeollabuk-do 55365, Korea; (J.-S.K.); (J.A.)
| | - Yhong-Hee Shim
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea
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50
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C/EBPδ protects from radiation-induced intestinal injury and sepsis by suppression of inflammatory and nitrosative stress. Sci Rep 2019; 9:13953. [PMID: 31562350 PMCID: PMC6764943 DOI: 10.1038/s41598-019-49437-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 08/15/2019] [Indexed: 12/20/2022] Open
Abstract
Ionizing radiation (IR)-induced intestinal damage is characterized by a loss of intestinal crypt cells, intestinal barrier disruption and translocation of intestinal microflora resulting in sepsis-mediated lethality. We have shown that mice lacking C/EBPδ display IR-induced intestinal and hematopoietic injury and lethality. The purpose of this study was to investigate whether increased IR-induced inflammatory, oxidative and nitrosative stress promote intestinal injury and sepsis-mediated lethality in Cebpd−/− mice. We found that irradiated Cebpd−/− mice show decreased villous height, crypt depth, crypt to villi ratio and expression of the proliferation marker, proliferating cell nuclear antigen, indicative of intestinal injury. Cebpd−/− mice show increased expression of the pro-inflammatory cytokines (Il-6, Tnf-α) and chemokines (Cxcl1, Mcp-1, Mif-1α) and Nos2 in the intestinal tissues compared to Cebpd+/+ mice after exposure to TBI. Cebpd−/− mice show decreased GSH/GSSG ratio, increased S-nitrosoglutathione and 3-nitrotyrosine in the intestine indicative of basal oxidative and nitrosative stress, which was exacerbated by IR. Irradiated Cebpd-deficient mice showed upregulation of Claudin-2 that correlated with increased intestinal permeability, presence of plasma endotoxin and bacterial translocation to the liver. Overall these results uncover a novel role for C/EBPδ in protection against IR-induced intestinal injury by suppressing inflammation and nitrosative stress and underlying sepsis-induced lethality.
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