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Xiao L, Cui T, Liu S, Chen B, Wang Y, Yang T, Li T, Chen J. Vitamin A supplementation improves the intestinal mucosal barrier and facilitates the expression of tight junction proteins in rats with diarrhea. Nutrition 2018; 57:97-108. [PMID: 30153586 DOI: 10.1016/j.nut.2018.06.007] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 06/11/2018] [Accepted: 06/19/2018] [Indexed: 12/14/2022]
Abstract
OBJECTIVES The aim of this study is to investigate the specific effects of vitamin A (VA) on diarrhea in rats and its potential targets to protect the intestinal mucosa. METHODS Specific pathogen-free Sprague Dawley rats were fed a VA deficient (VAD) or VA normal (VAN) diet for 4 wk. Then, half of the VAN rats were treated with a VAN diet and the other half with a lactose VAN diet. VAD rats were randomly assigned to one of four groups and fed a VAD diet, lactose VAD diet, VAN diet with VA supplementation (VAS) via daily intragastric administration, or a lactose VAN diet with daily VAS. Rat weight and degree of diarrhea were evaluated daily. After 15 d, the serum retinol level was measured by high-performance liquid chromatography, and the serum diamine oxidase (DAO) and zonulin concentrations were analyzed by enzyme-linked immunosorbent assays. The small intestine mucosal pathology was observed by hematoxylin and eosin staining. Western blotting was performed to detect the protein expression levels of occludin and claudin-1 in the intestinal mucosa, and the zonula-occludens 1 expression was assessed using immunohistochemistry. RESULTS VAD limited weight gain in rats and increased the degree of diarrhea. The serum retinol levels and the level of tight junction (TJ) proteins claudin-1 and occludin and grip strength were affected by the interaction between lactose-induced diarrhea and the VA diet. Diarrhea, independent of VAD, significantly decreased rat weight, increased serum DAO levels, damaged small intestine villi, and impaired zonula-occludens 1 protein expression. VAD significantly increased the concentration of zonulin independently of diarrhea, but VAS increased the serum retinol level, reduced the severity of diarrhea, increased the expression levels of the TJ proteins, facilitated the restoration of the small intestine villi that were damaged by the diarrhea, and decreased the concentrations of serum DAO and zonulin. CONCLUSIONS VAD may aggravate the degree of diarrhea and intestinal mucosal damage during the duration of diarrhea, and VAS helps relieve diarrhea and improves intestinal damage likely by regulating the expression of TJ proteins. Therefore, VA plays a pivotal role in the protection of the intestinal mucosa during instances of diarrhea.
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Affiliation(s)
- Lu Xiao
- Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing 400014, China
| | - Ting Cui
- Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing 400014, China
| | - Shu Liu
- Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing 400014, China
| | - Baolin Chen
- Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing 400014, China
| | - Yuting Wang
- Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing 400014, China; Department of Digestive, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Ting Yang
- Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing 400014, China
| | - Tingyu Li
- Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing 400014, China
| | - Jie Chen
- Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing 400014, China.
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Wang Y, Gao Y, Liu Q, Zhan X, Li Z, Hu H, Li T, Chen J. Effect of vitamin A and Zn supplementation on indices of vitamin A status, haemoglobin level and defecation of children with persistent diarrhea. J Clin Biochem Nutr 2016; 59:58-64. [PMID: 27499581 PMCID: PMC4933690 DOI: 10.3164/jcbn.15-68] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Accepted: 09/07/2015] [Indexed: 12/12/2022] Open
Abstract
To investigate the effect of vitamin A and Zn supplementation on vitamin A status, haemoglobin level and defecation of children with persistent diarrhea, a total of 160 paediatric patients were randomly assigned to one of four intervention groups: daily supplementation of 1,500 IU VA for 14 days; daily Zn supplementation for 14 days; daily supplementation with both VA and Zn for 14 days; no supplementation. One hundred twenty-seven children with persistent diarrhea finished intervention (33 were lost to follow-up). Among the 127 children, 41 (32.28%) had anaemia, 104 (81.89%) had a VA deficiency and 38 (29.92%) had an iron insufficiency. Supplementation with VA or VA + Zn enhanced the serum VA levels and ameliorated anaemia. Supplementation with Zn and VA + Zn for 5 days significantly improved defecation, where the VA + Zn treatment resulted in superior outcomes. After 14 days of intervention, the total effectiveness rates were 93.94%, 96.77% and 96.67% in the three groups, significantly greater than that of the non-supplementation group (72.73%). These results indicate that single VA or concurrent VA + Zn supplementation can improve vitamin A status, haemoglobin level and defecation. However, concurrent VA + Zn supplementation is the optimal option and can shorten the duration of persistent diarrhea and markedly improve nutritional status. (www.clinicaltrials.gov registration number: ChiCTR-IOR-14005498)
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Affiliation(s)
- Yuting Wang
- Department of Gastroenterology, Children's Hospital of Chongqing Medical University, Zhongshan Second Road of Yuzhong District, Chongqing 400014, China; Ministry of Education Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing, Zhongshan Second Road, Yuzhong District, Chongqing 400014, China
| | - Yuan Gao
- Ministry of Education Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing, Zhongshan Second Road, Yuzhong District, Chongqing 400014, China; Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Zhongshan Second Road, Yuzhong District, Chongqing 400014, China
| | - Quanbo Liu
- Department of Gastroenterology, Children's Hospital of Chongqing Medical University, Zhongshan Second Road of Yuzhong District, Chongqing 400014, China; Ministry of Education Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing, Zhongshan Second Road, Yuzhong District, Chongqing 400014, China
| | - Xue Zhan
- Department of Gastroenterology, Children's Hospital of Chongqing Medical University, Zhongshan Second Road of Yuzhong District, Chongqing 400014, China; Ministry of Education Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing, Zhongshan Second Road, Yuzhong District, Chongqing 400014, China
| | - Zhongyue Li
- Department of Gastroenterology, Children's Hospital of Chongqing Medical University, Zhongshan Second Road of Yuzhong District, Chongqing 400014, China; Ministry of Education Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing, Zhongshan Second Road, Yuzhong District, Chongqing 400014, China
| | - Huajian Hu
- Department of Gastroenterology, Children's Hospital of Chongqing Medical University, Zhongshan Second Road of Yuzhong District, Chongqing 400014, China; Ministry of Education Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing, Zhongshan Second Road, Yuzhong District, Chongqing 400014, China
| | - Tingyu Li
- Ministry of Education Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing, Zhongshan Second Road, Yuzhong District, Chongqing 400014, China; Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Zhongshan Second Road, Yuzhong District, Chongqing 400014, China
| | - Jie Chen
- Ministry of Education Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing, Zhongshan Second Road, Yuzhong District, Chongqing 400014, China; Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Zhongshan Second Road, Yuzhong District, Chongqing 400014, China
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Correlation of serum retinol and its relation with lipid prolile in Indian cancer patients. Indian J Clin Biochem 2004; 19:36-9. [PMID: 23105423 DOI: 10.1007/bf02872386] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The present study was undertaken to investigate the relation of retinol with lipid profile of patients with cancers of breast, stomach, oesophagus, colon, gallbladder, pancreas, lung and cervix. Serum retinol was assayed in 120 patients and 40 healthy normal control by reverse phase HPLC using CLC-ODS C-18 columns and retinyl acetate as an internal standard.Significant decease in serum cholesterol and LDL was observed in patients with cancers of esophagus, colon, stomach, pancreas and gallbladder respectively.Retinol was reduced in all forms of cancers but pronounced decrease was observed in oesophagus, gallbladder, pancreas, stomach and colon. Serum Retinol in all patients was directly correlated with total cholesterol and LDL. These findings suggest that therapeutic modalities of this vitamin could be planned for these patients, as vitamin A is known to act as an antioxidant for prevention of certain cancers.
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