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Cheng X, Li D, Yang C, Chen B, Xu P, Zhang L. Oral vitamin A supplements to prevent acute upper respiratory tract infections in children up to seven years of age. Cochrane Database Syst Rev 2024; 5:CD015306. [PMID: 38738639 PMCID: PMC11089595 DOI: 10.1002/14651858.cd015306.pub2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
BACKGROUND According to global prevalence analysis studies, acute upper respiratory tract infections (URTIs) are the most common acute infectious disease in children, especially in preschool children. Acute URTIs lead to an economic burden on families and society. Vitamin A refers to the fat-soluble compound all-trans-retinol and also represents retinol and its active metabolites. Vitamin A interacts with both the innate immune system and the adaptive immune system and improves the host's defences against infections. Correlation studies show that serum retinol deficiency was associated with a higher risk of respiratory tract infections. Therefore, vitamin A supplementation may be important in preventing acute URTIs. OBJECTIVES To assess the effectiveness and safety of vitamin A supplements for preventing acute upper respiratory tract infections in children up to seven years of age. SEARCH METHODS We searched CENTRAL, MEDLINE, Embase, the Chinese Biomedical Literature Database, and two trial registration platforms to 8 June 2023. We also checked the reference lists of all primary studies and reviewed relevant systematic reviews and trials for additional references. We imposed no language or publication restrictions. SELECTION CRITERIA We included randomised controlled trials (RCTs), which evaluated the role of vitamin A supplementation in the prevention of acute URTIs in children up to seven years of age. DATA COLLECTION AND ANALYSIS We used the standard methodological procedures expected by Cochrane. MAIN RESULTS We included six studies (27,351 participants). Four studies were RCTs and two were cluster-RCTs. The included studies were all conducted in lower-middle-income countries (two in India, two in South Africa, one in Ecuador, and one in Haiti). Three studies included healthy children who had no vitamin A deficiency, one study included children born to HIV-infected women, one study included low-birthweight neonates, and one study included children in areas with a high local prevalence of malnutrition and xerophthalmia. In two studies, vitamin E was a co-treatment administered in addition to vitamin A. We judged the included studies to be at either a high or unclear risk of bias for random sequence generation, incomplete outcome data, and blinding. Primary outcomes Six studies reported the incidence of acute URTIs during the study period. Five studies reported the number of acute URTIs over a period of time, but there was population heterogeneity and the results were presented in different forms, therefore only three studies were meta-analysed. We are uncertain of the effect of vitamin A supplementation on the number of acute URTIs over two weeks (risk ratio (RR) 1.00, 95% confidence interval (CI) 0.92 to 1.09; I2 = 44%; 3 studies, 22,668 participants; low-certainty evidence). Two studies reported the proportion of participants with an acute URTI. We are uncertain of the effect of vitamin A supplementation on the proportion of participants with an acute URTI (2 studies, 15,535 participants; low-certainty evidence). Only one study (116 participants) reported adverse events. No infant in either the placebo or vitamin A group was found to have feeding difficulties (failure to feed or vomiting), a bulging fontanelle, or neurological signs before or after vitamin A administration (very low-certainty evidence). Secondary outcomes Two studies (296 participants) reported the severity of subjective symptoms, presented by the mean duration of acute URTI. Vitamin A may have little to no effect on the mean duration of acute URTI (very low-certainty evidence). AUTHORS' CONCLUSIONS The evidence for the use of vitamin A supplementation to prevent acute URTI is uncertain, because population, dose and duration of interventions, and outcomes vary between studies. From generally very low- to low-certainty evidence, we found that there may be no benefit in the use of vitamin A supplementation to prevent acute URTI in children up to seven years of age. More RCTs are needed to strengthen the current evidence. Future research should report over longer time frames using validated tools and consistent reporting, and ensure adequate power calculations, to allow for easier synthesis of data. Finally, it is important to assess vitamin A supplementation for preschool children with vitamin A deficiency.
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Affiliation(s)
- Xiao Cheng
- Department of Pharmacy, West China Second University Hospital, Sichuan University, Chengdu, China
- Evidence-Based Pharmacy Center, West China Second University Hospital, Sichuan University, Chengdu, China
- Key Laboratory for Technical Research on Drug Products In Vitro and In Vivo Correlation, NMPA, Chengdu, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, Chengdu, China
| | - Dan Li
- Department of Pharmacy, Women and Children's Hospital of Chongqing Medical University, Chongqing, China
- Department of Pharmacy, Chongqing Health Center for Women and Children, Chongqing, China
| | - Chunsong Yang
- Department of Pharmacy, West China Second University Hospital, Sichuan University, Chengdu, China
- Evidence-Based Pharmacy Center, West China Second University Hospital, Sichuan University, Chengdu, China
- Key Laboratory for Technical Research on Drug Products In Vitro and In Vivo Correlation, NMPA, Chengdu, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, Chengdu, China
| | - Bin Chen
- Emergency Department, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Ping Xu
- Library, Sichuan University, Chengdu, China
| | - Lingli Zhang
- Department of Pharmacy, West China Second University Hospital, Sichuan University, Chengdu, China
- Evidence-Based Pharmacy Center, West China Second University Hospital, Sichuan University, Chengdu, China
- Key Laboratory for Technical Research on Drug Products In Vitro and In Vivo Correlation, NMPA, Chengdu, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, Chengdu, China
- Chinese Evidence-based Medicine Center, West China Hospital, Sichuan University, Chengdu, China
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Li S, Lei G, Liu Y, Tian L, Jie Y, Wang G. The protective effect of vitamin A palmitate eye gel on the ocular surface during general anaesthesia surgery: a randomized controlled trial. Int Ophthalmol 2024; 44:168. [PMID: 38573375 PMCID: PMC10995056 DOI: 10.1007/s10792-024-03074-0] [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: 07/12/2023] [Accepted: 02/16/2024] [Indexed: 04/05/2024]
Abstract
PURPOSE To investigate the change in tear production associated with general anesthesia and the protective effect of vitamin A palmitate eye gel on the ocular surface during general anesthesia. METHODS This double-blind, randomized clinical trial included patients undergoing non-ophthalmic surgery under general anesthesia who randomly received vitamin A palmitate eye gel and taping for one eye (Group A, n = 60) or taping alone for the other eye (Group B, n = 60). Symptom assessment in dry eye (SANDE) score, tear film break-up time (TBUT), corneal fluorescein staining (CFS) score, and Schirmer tear test I (STT-1) were analyzed under a hand-held slit lamp before anesthesia (T0), 0.5 h postoperatively (T1), and 24 h postoperatively (T2). RESULTS At 0.5 h postoperatively, an increase in CFS score was observed in both groups (P < 0.05 in Group A and P < 0.01 in Group B), and the participants in Group A had less corneal abrasions than those in Group B. STT-1 significantly increased in Group A (P < 0.05), while it significantly decreased in Group B (P < 0.001). The changes between the two groups were statistically significant (P < 0.001). At 24 h postoperatively, both CFS score and STT-1 almost returned to baseline levels in the two groups. In both groups, the SANDE score and TBUT showed little change at 0.5 h and 24 h postoperatively (all P > 0.05). CONCLUSION Vitamin A palmitate eye gel effectively protected the ocular surface and aqueous supplementation during general anesthesia. TRIAL REGISTRATION This study was registered in the Chinese Clinical Trial Registry (ChiCTR2100052140) on 20/10/2021.
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Affiliation(s)
- Siyuan Li
- Beijing Ophthalmology and Visual Sciences Key Laboratory, Beijing Tongren Eye Center, Beijing Institute of Ophthalmology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Guiyu Lei
- Department of Anesthesiology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Ying Liu
- Operating Room, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Lei Tian
- Beijing Ophthalmology and Visual Sciences Key Laboratory, Beijing Tongren Eye Center, Beijing Institute of Ophthalmology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
- Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, Beihang University and Capital Medical University, Beijing, China
| | - Ying Jie
- Beijing Ophthalmology and Visual Sciences Key Laboratory, Beijing Tongren Eye Center, Beijing Institute of Ophthalmology, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
| | - Guyan Wang
- Department of Anesthesiology, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
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Cutrupi F, De Luca A, Di Zazzo A, Micera A, Coassin M, Bonini S. Real Life Impact of Dry Eye Disease. Semin Ophthalmol 2023; 38:690-702. [PMID: 37095685 DOI: 10.1080/08820538.2023.2204931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/21/2023] [Accepted: 03/22/2023] [Indexed: 04/26/2023]
Abstract
Dry Eye Disease (DED) is an increasingly common condition that affects between 5% and 50% of the global population. Even though DED is most frequently diagnosed in older people, it has also been diagnosed in young adults and adolescents more frequently in recent years (employees, gamers). People can experience different types of symptoms and find it challenging to read, watch TV, cook, climb stairs, and meet friends. Mild and severe dry eye can reduce quality of life similarly to mild psoriasis and moderate-to-severe angina. Furthermore, DED patients experience serious difficulties driving vehicles, especially at night, and show a decrease in work productivity, which, when combined with the relevant indirect cost that this condition produces, poses a serious challenge in our days. In addition, DED patients are more likely to develop depression and suicidal ideations and experience frequent sleep disorders. Finally, it is discussed how lifestyle changes, such as increased physical activity, blinking exercises, and a proper diet, have positive implications for the management of this condition. Our aim is to draw attention to the negative effects of dry eye in real life, which are unique to each patient, especially as they relate to the non-visual symptoms experienced by DED patients.
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Affiliation(s)
- Francesco Cutrupi
- Ophthalmology Complex Operative Unit, University Campus Bio-Medico, Rome, Italy
| | - Andrea De Luca
- Ophthalmology Complex Operative Unit, University Campus Bio-Medico, Rome, Italy
| | - Antonio Di Zazzo
- Research Laboratories in Ophthalmology, IRCCS Bietti Foundation, Rome, Italy
| | - Alessandra Micera
- Research Laboratories in Ophthalmology, IRCCS Bietti Foundation, Rome, Italy
| | - Marco Coassin
- Ophthalmology Complex Operative Unit, University Campus Bio-Medico, Rome, Italy
| | - Stefano Bonini
- Ophthalmology Complex Operative Unit, University Campus Bio-Medico, Rome, Italy
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Li R, Zhao W, Wang H, Toshiyoshi M, Zhao Y, Bu H. Vitamin A in children's pneumonia for a COVID-19 perspective: A systematic review and meta-analysis of 15 trials. Medicine (Baltimore) 2022; 101:e31289. [PMID: 36281101 PMCID: PMC9592144 DOI: 10.1097/md.0000000000031289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND To systematically review and meta-analyze the efficacy of vitamin A as an adjuvant therapy for pneumonia in children. METHODS We searched in PubMed, the Cochrane Library, Chinese National Knowledge Infrastructure, WanFang Database and Chongqing VIP information network from libraries building to March 2022, screening randomized controlled trials (RCT) about vitamin A combined with conventional therapy for pneumonia in children. Two researchers used the Cochrane risk of bias tool to assess the quality of included studies dependently. Data analysis was conducted in the RevMan 5.3. RESULTS 15 trials involving 3496 patients (treated group: 1898; control group: 1598) were analyzed in this study. The Meta-analysis showed that vitamin A combined with conventional therapy improved clinical efficacy (P < .05), shortened the duration of fever and cough, negative time of chest X-ray, and the hospitalization, lung rale disappearance, choking milk disappearance, shortness of breath disappearance and perilabial cyanosis disappearance (P < .05). However, vitamin A combined with conventional therapy did not reduce the mortality of pneumonia in children (P > .05). CONCLUSION Vitamin A contributes to relieve the clinical symptoms and signs, and also shorten the hospitalization.
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Affiliation(s)
- Ruoxi Li
- Graduate School, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Wenli Zhao
- Liver Center, Saga University Hospital, Saga University, Saga, Japan
| | - Hongwu Wang
- School of Health Science and Engineering, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Maeda Toshiyoshi
- International Education College, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Ye Zhao
- Department of Public Health, International College, Krirk University, Bangkok, Thailand
- *Correspondence: Ye Zhao, Department of Public Health, International College, Krirk University, Bangkok 10220, Thailand (e-mail: )
| | - Huaien Bu
- School of Health Science and Engineering, Tianjin University of Traditional Chinese Medicine, Tianjin, China
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Vlieg‐ Boerstra B, Jong N, Meyer R, Agostoni C, De Cosmi V, Grimshaw K, Milani GP, Muraro A, Oude Elberink H, Pali‐ Schöll I, Roduit C, Sasaki M, Skypala I, Sokolowska M, Splunter M, Untersmayr E, Venter C, O’Mahony L, Nwaru BI. Nutrient supplementation for prevention of viral respiratory tract infections in healthy subjects: A systematic review and meta-analysis. Allergy 2022; 77:1373-1388. [PMID: 34626488 DOI: 10.1111/all.15136] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 08/08/2021] [Accepted: 08/24/2021] [Indexed: 12/11/2022]
Abstract
It remains uncertain as to whether nutrient supplementation for the general population considered healthy could be useful in the prevention of RTIs, such as COVID-19. In this systematic review and meta-analysis, the evidence was evaluated for primary prevention of any viral respiratory tract infection (RTI) such as SARS-CoV-2, through supplementation of nutrients with a recognized role in immune function: multiple micronutrients, vitamin A, folic acid, vitamin B12, C, D, E, beta-carotene, zinc, iron and long-chain polyunsaturated fatty acids. The search produced 15,163 records of which 93 papers (based on 115 studies) met the inclusion criteria, resulting in 199,055 subjects (191,636 children and 7,419 adults) from 37 countries. Sixty-three studies were included in the meta-analyses, which was performed for children and adults separately. By stratifying the meta-analysis by world regions, only studies performed in Asia showed a significant but heterogeneous protective effect of zinc supplementation on RTIs (RR 0.86, 95% CI 0.7-0.96, I2 = 79.1%, p = .000). Vitamin D supplementation in adults significantly decreased the incidence of RTI (RR 0.89, 95% CI 0.79-0.99, p = .272), particularly in North America (RR 0.82 95% CI 0.68-0.97), but not in Europe or Oceania. Supplementation of nutrients in the general population has either no or at most a very limited effect on prevention of RTIs. Zinc supplementation appears protective for children in Asia, whilst vitamin D may protect adults in the USA and Canada. In 10/115 (8.7%) studies post-hoc analyses based on stratification for nutritional status was performed. In only one study zinc supplementation was found to be more effective in children with low zinc serum as compared to children with normal zinc serum levels.
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Affiliation(s)
| | - Nicolette Jong
- Internal Medicine Allergology & Clinical Immunology Erasmus MC University Medical Centre Rotterdam Rotterdam The Netherlands
- Paediatric Allergology Sophia Children Hospital ErasmusMC University Medical Centre Rotterdam Rotterdam The Netherlands
| | - Rosan Meyer
- National Heart & Lung Institute Imperial College London London UK
| | - Carlo Agostoni
- Pediatric Unit Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico Milan Italy
- Department of Clinical Sciences and Community Health Università degli Studi di Milano Milan Italy
| | - Valentina De Cosmi
- Pediatric Unit Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico Milan Italy
- Department of Clinical Sciences and Community Health Università degli Studi di Milano Milan Italy
| | - Kate Grimshaw
- University Child Health University of Southampton Southampton General Hospital Southampton UK
| | - Gregorio Paolo Milani
- Pediatric Unit Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico Milan Italy
- Department of Clinical Sciences and Community Health Università degli Studi di Milano Milan Italy
| | - Antonella Muraro
- Food Allergy Referral Centre Department of Woman and Child Health Padua University Hospital Padua Italy
| | - Hanneke Oude Elberink
- Department of Internal Medicine, Allergology University Medical Centre Groningen Groningen The Netherlands
| | - Isabella Pali‐ Schöll
- Interuniversity Messerli Research Institute Comparative Medicine University of Veterinary Medicine and Medical University Vienna Vienna Austria
- Institute of Pathophysiology and Allergy Research Center for Pathophysiology, Infectiology and Immunology Medical University of Vienna Vienna Austria
| | - Caroline Roduit
- University Children's Hospital Zurich Zurich Switzerland
- Christine Kühne‐Center for Allergy Research and Education (CK‐CARE) Davos Switzerland
- Children's Hospital of Eastern Switzerland St Gallen Switzerland
| | - Mari Sasaki
- Department of Immunology and Allergy University Children's Hospital Zurich Zurich Switzerland
| | - Isabel Skypala
- National Heart & Lung Institute Imperial College London London UK
- Department of Allergy & Clinical Immunology Royal Brompton & Harefield NHS Foundation Trust London UK
| | - Milena Sokolowska
- Swiss Institute of Allergy and Asthma Research (SIAF) University of Zurich Davos Switzerland
| | - Marloes Splunter
- Internal Medicine Allergology & Clinical Immunology Erasmus MC University Medical Centre Rotterdam Rotterdam The Netherlands
| | - Eva Untersmayr
- Institute of Pathophysiology and Allergy Research Center for Pathophysiology, Infectiology and Immunology Medical University of Vienna Vienna Austria
| | - Carina Venter
- Section of Allergy and Immunology Children’s Hospital Colorado University of Colorado Denver Colorado USA
| | - Liam O’Mahony
- Department of Medicine and Microbiology APC Microbiome Ireland National University of Ireland Cork Ireland
| | - Bright I Nwaru
- Krefting Research Centre Institute of Medicine University of Gothenburg Gothenburg Sweden
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Zhang Y, Lu Y, Wang S, Yang L, Xia H, Sun G. Excessive Vitamin A Supplementation Increased the Incidence of Acute Respiratory Tract Infections: A Systematic Review and Meta-Analysis. Nutrients 2021; 13:nu13124251. [PMID: 34959803 PMCID: PMC8706818 DOI: 10.3390/nu13124251] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 11/23/2021] [Accepted: 11/25/2021] [Indexed: 11/28/2022] Open
Abstract
(1) Background: vitamin A deficiency (VAD) is highly prevalent in children living in poor conditions. It has been suggested that vitamin A supplementation (VAS) may reduce the risk of acute respiratory tract infections (ARTI). Our study provides updates on the effects of oral VAS (alone) in children on ARTI and further explores the effect on interesting subgroups. (2) Methods: eight databases were systematically searched from their inception until 5 July 2021. The assessments of inclusion criteria, extraction of data, and data synthesis were carried out independently by two reviewers. (3) Results: a total of 26 randomized trials involving 50,944 participants fulfilled the inclusion criteria. There was no significant association of VAS with the incidence of ARTI compared with the placebo (RR 1.03, 95% CI 0.92 to 1.15). Subgroup analyses showed that VAS higher than WHO recommendations increased the incidence of ARTI by 13% (RR 1.13, 95% CI 1.07 to 1.20), and in the high-dose intervention group, the incidence rate among well-nourished children rose by 66% (RR 1.66, 95% CI 1.30 to 2.11). (4) Conclusions: no more beneficial effects were seen with VAS in children in the prevention or recovery of acute respiratory infections. Excessive VAS may increase the incidence of ARTI in children with normal nutritional status.
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Affiliation(s)
| | | | | | | | | | - Guiju Sun
- Correspondence: ; Tel.: +86-139-5192-8860
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Fogagnolo P, De Cilla’ S, Alkabes M, Sabella P, Rossetti L. A Review of Topical and Systemic Vitamin Supplementation in Ocular Surface Diseases. Nutrients 2021; 13:nu13061998. [PMID: 34200595 PMCID: PMC8228525 DOI: 10.3390/nu13061998] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 05/24/2021] [Accepted: 06/08/2021] [Indexed: 02/06/2023] Open
Abstract
In the homeostasis of the ocular surface, vitamins play a critical role in regulating inflammatory responses and promoting cell differentiation, development and correct function. Systemic vitamin supplementation has been available for many decades; in recent years, thanks to pharmacological advancements, topical vitamin delivery has also become available in an attempt to better treat ocular surface disease (OSD) and dry eye disease (DED). In this paper, we reviewed the current evidence on the role of vitamin supplementation in OSD and DED. We originally searched the PubMed archive, inspected the references and restricted the search to pertinent papers. The body of evidence was evaluated using the amelioration of both signs and symptoms as the outcome, when available. We found that in patients with vitamin deficiency, systemic supplementation of Vitamin A is effective in treating OSD, reducing both DED signs and symptoms. Additionally, systemic supplementation of vitamin D is useful in reducing DED symptoms and increasing tear volume. Vitamin A is also effective in reducing DED signs and symptoms when administered locally. The efficacy of supplementation with other vitamins is still not fully proven. In conclusion, the inclusion of vitamins into the treatment strategies for OSD and DED allows for better treatment customization and better outcomes in these patients.
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Affiliation(s)
- Paolo Fogagnolo
- Ophthalmology Unit, Department of Health Sciences, San Paolo Hospital, Università degli Studi di Milano, 20142 Milan, Italy; (P.S.); (L.R.)
- Correspondence:
| | - Stefano De Cilla’
- Ophthalmology Unit, Ospedale Maggiore della Carita, 28100 Novara, Italy; (S.D.C.); (M.A.)
| | - Micol Alkabes
- Ophthalmology Unit, Ospedale Maggiore della Carita, 28100 Novara, Italy; (S.D.C.); (M.A.)
| | - Pierfilippo Sabella
- Ophthalmology Unit, Department of Health Sciences, San Paolo Hospital, Università degli Studi di Milano, 20142 Milan, Italy; (P.S.); (L.R.)
| | - Luca Rossetti
- Ophthalmology Unit, Department of Health Sciences, San Paolo Hospital, Università degli Studi di Milano, 20142 Milan, Italy; (P.S.); (L.R.)
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Awasthi S, Awasthi A. Role of vitamin a in child health and nutrition. CLINICAL EPIDEMIOLOGY AND GLOBAL HEALTH 2020. [DOI: 10.1016/j.cegh.2020.03.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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Tam E, Keats EC, Rind F, Das JK, Bhutta ZA. Micronutrient Supplementation and Fortification Interventions on Health and Development Outcomes among Children Under-Five in Low- and Middle-Income Countries: A Systematic Review and Meta-Analysis. Nutrients 2020; 12:E289. [PMID: 31973225 PMCID: PMC7071447 DOI: 10.3390/nu12020289] [Citation(s) in RCA: 98] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/10/2020] [Accepted: 01/19/2020] [Indexed: 12/20/2022] Open
Abstract
Micronutrient deficiencies continue to be widespread among children under-five in low- and middle-income countries (LMICs), despite the fact that several effective strategies now exist to prevent them. This kind of malnutrition can have several immediate and long-term consequences, including stunted growth, a higher risk of acquiring infections, and poor development outcomes, all of which may lead to a child not achieving his or her full potential. This review systematically synthesizes the available evidence on the strategies used to prevent micronutrient malnutrition among children under-five in LMICs, including single and multiple micronutrient (MMN) supplementation, lipid-based nutrient supplementation (LNS), targeted and large-scale fortification, and point-of-use-fortification with micronutrient powders (MNPs). We searched relevant databases and grey literature, retrieving 35,924 papers. After application of eligibility criteria, we included 197 unique studies. Of note, we examined the efficacy and effectiveness of interventions. We found that certain outcomes, such as anemia, responded to several intervention types. The risk of anemia was reduced with iron alone, iron-folic acid, MMN supplementation, MNPs, targeted fortification, and large-scale fortification. Stunting and underweight, however, were improved only among children who were provided with LNS, though MMN supplementation also slightly increased length-for-age z-scores. Vitamin A supplementation likely reduced all-cause mortality, while zinc supplementation decreased the incidence of diarrhea. Importantly, many effects of LNS and MNPs held when pooling data from effectiveness studies. Taken together, this evidence further supports the importance of these strategies for reducing the burden of micronutrient malnutrition in children. Population and context should be considered when selecting one or more appropriate interventions for programming.
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Affiliation(s)
- Emily Tam
- Centre for Global Child Health, Hospital for Sick Children, Toronto, ON M5G 0A4, Canada; (E.T.); (E.C.K.)
| | - Emily C. Keats
- Centre for Global Child Health, Hospital for Sick Children, Toronto, ON M5G 0A4, Canada; (E.T.); (E.C.K.)
| | - Fahad Rind
- Centre of Excellence in Women and Child’s Health, Aga Khan University, Karachi 74800, Pakistan;
| | - Jai K. Das
- Division of Women and Child Health, Aga Khan University, Karachi 74800, Pakistan;
| | - Zulfiqar A. Bhutta
- Centre for Global Child Health, Hospital for Sick Children, Toronto, ON M5G 0A4, Canada; (E.T.); (E.C.K.)
- Centre of Excellence in Women and Child’s Health, Aga Khan University, Karachi 74800, Pakistan;
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Serum Retinol, Vitamin D and Zinc Levels in Under Five Children with Acute Lower Respiratory Tract Infections. Indian J Pediatr 2019; 86:196-197. [PMID: 30547423 DOI: 10.1007/s12098-018-2805-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 10/04/2018] [Indexed: 10/27/2022]
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Adverse effects of antioxidative vitamins. Int J Occup Med Environ Health 2012; 25:105-21. [PMID: 22528540 DOI: 10.2478/s13382-012-0022-x] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2010] [Accepted: 03/07/2012] [Indexed: 11/20/2022] Open
Abstract
High doses of synthetic antioxidative vitamins: A, E, C and β-carotene are often used on long-term basis in numerous preventive and therapeutic medical applications. Instead of expected health effects, the use of those vitamins may however lead to cases of hypervitaminosis and even to intoxication. The article points out main principles of safety which are to be observed during supplementation with antioxidative vitamins. Toxic effects resulting from erroneous administration of high doses of those substances on organs and systems of the organism are also discussed. Attention is drawn to interactions of antioxidative vitamins with concomitantly used drugs, as well as intensification of adverse effects caused by various exogenous chemical factors. Moreover, the article presents the evaluation of supplementation with these vitamins, which was performed in large studies.
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Prevalence of ocular signs and subclinical vitamin A deficiency and its determinants among rural pre-school children in India. Public Health Nutr 2011; 15:568-77. [DOI: 10.1017/s136898001100214x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
AbstractObjectiveTo assess the magnitude and determinants of vitamin A deficiency (VAD) and coverage of vitamin A supplementation (VAS) among pre-school children.DesignA community-based cross-sectional study was carried out by adopting a multistage, stratified, random sampling procedure.SettingRural areas of eight states in India.SubjectsPre-school children and their mothers were covered.ResultsA total of 71 591 pre-school children were clinically examined for ocular signs of VAD. Serum retinol concentrations in dried blood spots were assessed in a sub-sample of 3954 children using HPLC. The prevalence of Bitot spots was 0·8 %. The total ocular signs were significantly higher (P < 0·001) among boys (2·6 %) compared with girls (1·9 %) and in older children (3–4 years) compared (P < 0·001) with younger (1–2 years), and were also high in children of labourers, scheduled castes and illiterate mothers. The odds of having Bitot spots was highest in children of scheduled caste (OR = 3·8; 95 % CI 2·9, 5·0), labourers (OR = 2·9; 95 % CI 2·1, 3·9), illiterate mothers (OR = 2·7; 95 % CI 2·2, 2·3) and households without a sanitary latrine (OR = 5·9; 95 % CI 4·0, 8·7). Subclinical VAD (serum retinol level <20 μg/dl) was observed in 62 % of children. This was also relatively high among scheduled caste and scheduled tribe children. The rate of coverage of VAS was 58 %.ConclusionsThe study revealed that VAD is a major nutritional problem and coverage of VAS was poor. The important determinants of VAD were illiteracy, low socio-economic status, occupation and poor sanitation. Strengthening the existing VAS programme and focused attention on dietary diversification are essential for prevention of VAD.
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Arlappa N, Balakrishna N, Laxmaiah A, Raghu P, Vikas Rao V, Madhavan Nair K, Brahmam GNV. Prevalence of vitamin A deficiency and its determinants among the rural pre-school children of Madhya Pradesh, India. Ann Hum Biol 2010; 38:131-6. [DOI: 10.3109/03014460.2010.498794] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Jung H, Elwood R. Pediatric ophthalmologic infectious diseases in the developing world. Int Ophthalmol Clin 2010; 50:149-162. [PMID: 20930589 DOI: 10.1097/iio.0b013e3181f1302f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Affiliation(s)
- Hoon Jung
- Ophthalmology Clinic, 301 Fisher Street, Keesler AFB, MS 39534, USA
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Semba RD, de Pee S, Sun K, Bloem MW, Raju VK. The role of expanded coverage of the national vitamin A program in preventing morbidity and mortality among preschool children in India. J Nutr 2010; 140:208S-12S. [PMID: 19939992 DOI: 10.3945/jn.109.110700] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Higher food prices increase the risk of vitamin A deficiency among preschool children in poor families, because a larger part of the household food budget is spent on grain foods and less on vitamin A-rich foods. Vitamin A supplementation is an important source of vitamin A for children. Our objective was to characterize coverage of the India national vitamin A program for preschool children and identify risk factors for not receiving vitamin A. Anthropometric and demographic data were examined in 23,008 children aged 12-59 mo in the India National Family Health Survey, 2005-2006. Within the last 6 mo, 20.2% of children received vitamin A supplementation. The prevalence of stunting, severe stunting, underweight, and severe underweight was higher among children who did not receive vitamin A compared with those who received vitamin A (P < 0.0001). In families with a child who did and did not receive vitamin A, respectively, the proportion with a history of under-5 child mortality was 8.4 vs. 11.4% (P < 0.0001). By state, vitamin A program coverage was inversely proportional to the under-5 child mortality rate (r = -0.51; P = 0.004). Maternal education of > or =10 y [odds ratio (OR) 2.22; 95% CI 1.69-2.91], 7-9 y (OR 1.99; 95% CI 1.57-2.53), or 1-6 y (OR 1.65; 95% CI 1.28-2.13) compared with no education was an important factor related to receipt of vitamin A. Poor coverage of the vitamin A supplementation program in India has serious implications in the face of rising food prices. Expanded coverage of the vitamin A program in India will help protect children from morbidity, mortality, and blindness.
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Affiliation(s)
- Richard D Semba
- Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA.
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Dole K, Gilbert C, Deshpande M, Khandekar R. Prevalence and Determinants of Xerophthalmia in Preschool Children in Urban Slums, Pune, India—A Preliminary Assessment. Ophthalmic Epidemiol 2009; 16:8-14. [DOI: 10.1080/09286580802521325] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Chen H, Zhuo Q, Yuan W, Wang J, Wu T. Vitamin A for preventing acute lower respiratory tract infections in children up to seven years of age. Cochrane Database Syst Rev 2008:CD006090. [PMID: 18254093 DOI: 10.1002/14651858.cd006090.pub2] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND Vitamin A supplements are effective for preventing diarrhoea. There are theoretical reasons it might also be effective for acute lower respiratory tract infections (LRTIs), also very common in children, especially in low income countries. OBJECTIVES To assess the effectiveness and safety of vitamin A for preventing acute LRTIs in children up to seven years of age. SEARCH STRATEGY We searched the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library 2007, Issue 2); MEDLINE (1966 to July 2007); EMBASE (1974 to July 2007); and the Chinese Biomedicine Database (CBM) (1976 to July 2007). SELECTION CRITERIA Randomised controlled trials (RCTs) that assessed the effectiveness of vitamin A in the prevention of acute LRTI in children up to seven years of age. DATA COLLECTION AND ANALYSIS The review authors independently extracted data and assessed trial quality. Study authors were contacted for additional information. MAIN RESULTS Most studies found no significant effect of vitamin A on the incidence of acute LRTI, or prevalence of symptoms of acute LRTI. Vitamin A caused an increased incidence of acute LRTI in one study; an increase in cough and fever; and increased symptoms of cough and rapid breathing in two others. Three reported no differences and no protective effect of vitamin A. Two studies reported that vitamin A significantly reduced the incidence of acute LRTI with children with poor nutritional status or weight, but increased it in normal children. AUTHORS' CONCLUSIONS This unexpected result is outside our current understanding of the use of vitamin A for preventing acute LRTIs. Accordingly, vitamin A should not be given to all children to prevent acute LRTIs. There is evidence for vitamin A supplements to prevent acute LRTIs in children with low serum retinol or those with a poor nutritional status.
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