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Tombari S, Amri Y, Hasni Y, Hadj Fredj S, Salem Y, Ferchichi S, Essaddam L, Messaoud T, Dabboubi R. Vitamin D status and VDR gene polymorphisms in patients with growth hormone deficiency: A case control Tunisian study. Heliyon 2024; 10:e34947. [PMID: 39149044 PMCID: PMC11325357 DOI: 10.1016/j.heliyon.2024.e34947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2024] [Accepted: 07/18/2024] [Indexed: 08/17/2024] Open
Abstract
Introduction Growth Hormone Deficiency (GHD) is a rare disease marked by a complete or partial reduction in the production of growth hormone. Vitamin D deficiency is frequent and may be associated with several pathologies. However, the association between GHD and vitamin D deficiency has not been extensively studied. This study aimed to analyse VDR gene polymorphisms related to vitamin D status to ensure better care for patients with GHD. Material and methods A case-control study was conducted at the Children's Hospital of Tunis in collaboration with the Farhat Hached's Hospital of Sousse, including patients with GHD and healthy subjects. Genetic analysis of the VDR gene polymorphisms was performed using PCR-RFLP technique. Haplotypes were examined with Haploview software, while statistical analyses were carried out using SPSS and R programming language. Results Our study revealed significant differences in vitamin D (p = 0, 049) and calcium concentrations between patients and healthy subjects, which were lower in the GHD group (p = 0,018). A comparison of allelic and genotypic frequencies of the five polymorphisms indicated an association between the FokI polymorphism and GHD. Furthermore, significant difference was observed between the ApaI genotypes and PTH (p = 0,019) and ALP (p = 0,035). FokI genotypes were associated with phosphorus (p = 0,021). Additionally, One haplotype, CTAGT, exhibited a significant difference between the patients and healthy subjects (p = 0,002). Conclusion Our study findings indicate that hypovitaminosis D is common among patients with GHD, even when undergoing treatment with rhGH. This underscores the critical importance of vitamin D supplementation during treatment.
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Affiliation(s)
- Sarra Tombari
- Biochemistry Laboratory (LR00SP03), Bechir Hamza Children's Hospital, Tunis, Tunisia
| | - Yessine Amri
- Biochemistry Laboratory (LR00SP03), Bechir Hamza Children's Hospital, Tunis, Tunisia
- University of Jendouba, Higher Institute of Applied Studies in Humanity Le Kef, Department of Educational Sciences, Kef, Tunisia
| | - Yosra Hasni
- Department of Endocrinology, Farhat Hached Hospital, Sousse, Tunisia
| | - Sondess Hadj Fredj
- Biochemistry Laboratory (LR00SP03), Bechir Hamza Children's Hospital, Tunis, Tunisia
| | - Yesmine Salem
- Biochemistry Laboratory, Farhat Hached Hospital, Sousse, Tunisia
| | - Salima Ferchichi
- Biochemistry Laboratory, Farhat Hached Hospital, Sousse, Tunisia
| | - Leila Essaddam
- Department of Pediatrics, Bechir Hamza Children's Hospital, Tunis, Tunisia
| | - Taieb Messaoud
- Biochemistry Laboratory (LR00SP03), Bechir Hamza Children's Hospital, Tunis, Tunisia
| | - Rym Dabboubi
- Biochemistry Laboratory (LR00SP03), Bechir Hamza Children's Hospital, Tunis, Tunisia
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2
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Torres A, Cameselle C, Otero P, Simal-Gandara J. The Impact of Vitamin D and Its Dietary Supplementation in Breast Cancer Prevention: An Integrative Review. Nutrients 2024; 16:573. [PMID: 38474702 DOI: 10.3390/nu16050573] [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: 01/18/2024] [Revised: 02/09/2024] [Accepted: 02/13/2024] [Indexed: 03/14/2024] Open
Abstract
Vitamin D deficiency is currently a significant public health issue closely linked to numerous diseases, such as breast cancer. This study aims to determine the estimated optimal serum levels of vitamin D to have a protective effect against breast cancer, in addition to exploring the biological mechanisms and risk factors involved. A literature search of articles published in the last 5 years was conducted, and simple statistical analyses using mean and standard deviation were performed to calculate the average concentration of vitamin D from different available studies. It has been observed that serum levels of vitamin D ≥ 40.26 ng/mL ± 14.19 ng/mL could exert a protective effect against breast cancer. Additionally, various biological mechanisms, such as those related to the immune system, and risk factors like diet implicated in this relationship were elucidated. Consequently, it can be concluded that proper serum levels of vitamin D may have a protective effect against breast cancer, and dietary supplementation may be an appropriate procedure to achieve these optimal vitamin D concentrations.
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Affiliation(s)
- Antía Torres
- Nutrition and Bromatology Group, Department of Analytical Chemistry and Food Science, Faculty of Science, University de Vigo, E-32004 Ourense, Spain
| | - Carla Cameselle
- Nutrition and Bromatology Group, Department of Analytical Chemistry and Food Science, Faculty of Science, University de Vigo, E-32004 Ourense, Spain
| | - Paz Otero
- Nutrition and Bromatology Group, Department of Analytical Chemistry and Food Science, Faculty of Science, University de Vigo, E-32004 Ourense, Spain
| | - Jesus Simal-Gandara
- Nutrition and Bromatology Group, Department of Analytical Chemistry and Food Science, Faculty of Science, University de Vigo, E-32004 Ourense, Spain
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Khan M, Bushara NZA, Kumar M, Mandal RK, Ahmad S, Khan S. Frequency of Healthy Control Genotype of VDR Gene Polymorphisms in the Saudi Population of the Ha'il Region: A Comparative Study with Worldwide Population. J Environ Pathol Toxicol Oncol 2024; 43:61-69. [PMID: 37824370 DOI: 10.1615/jenvironpatholtoxicoloncol.2023048813] [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: 10/14/2023] Open
Abstract
Genetic polymorphisms in the vitamin D receptor (VDR) may influence the biological effects of vitamin D and increase a person's susceptibility to cancer. Previous studies have shown that different ethnic groups exhibit varying frequencies of the VDR gene variants TaqI, ApaI, FokI, and BsmI. However, the allelic distribution of these VDR polymorphisms in the Saudi population of Ha'il region is not sufficiently explored. In this study, efforts were made to ascertain the frequency of VDR polymorphisms in the Saudi population of Ha'il region, and then comparison was made for VDR polymorphism rates with other populations of the world. Allele and genotype frequencies of VDR TaqI, ApaI, BsmI and FokI gene was determined. The frequency distribution for the variant allele of VDR TaqI, ApaI, BsmI and FokI was found to be 70, 33, 50 and 25%, respectively. A significant frequency distribution was found for VDR-TaqI, ApaI and FokI variants in comparison with other populations of the world. Whereas, almost all of the studies dealing with VDR-FokI failed to show substantial difference while comparing with the data reported from the population of Ha'il region of Saudi Arabia. A significant pattern in the frequency of VDR gene variations have been found in the Saudi population of Ha'il region, which may be attributed to ethnic variance. The understanding of the worldwide distribution of VDR markers could help with high-risk screening of those who are exposed to environmental hazards and people of Ha'il region, who are predispose to cancer.
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Affiliation(s)
- Mahvish Khan
- Department of Biology, College of Science, University of Ha'il, Ha'il-2440, Saudi Arabia
| | - Nashwa Z A Bushara
- Department of Preventive Dental Sciences, College of Dentistry, University of Ha'il, Ha'il-2440, Saudi Arabia
| | - Manoj Kumar
- Department of Oral and Maxillofacial surgery, College of Dentistry, University of Ha'il, Ha'il-2440, Saudi Arabia
| | - Raju K Mandal
- Research and Scientific Studies Unit, College of Nursing & Allied Health Sciences, Jazan University, Jazan-45142, Saudi Arabia
| | - Saheem Ahmad
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, University of Ha'il, Ha'il-2440, Saudi Arabia
| | - Saif Khan
- Department of Basic Dental and Medical Sciences, College of Dentistry, Ha'il University, Ha'il-2440, Saudi Arabia
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Roheel A, Khan A, Anwar F, Akbar Z, Akhtar MF, Imran Khan M, Sohail MF, Ahmad R. Global epidemiology of breast cancer based on risk factors: a systematic review. Front Oncol 2023; 13:1240098. [PMID: 37886170 PMCID: PMC10598331 DOI: 10.3389/fonc.2023.1240098] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 09/11/2023] [Indexed: 10/28/2023] Open
Abstract
Background Numerous reviews of the epidemiology and risk factors for breast cancer have been published previously which heighted different directions of breast cancer. Aim The present review examined the likelihood that incidence, prevalence, and particular risk factors might vary by geographic region and possibly by food and cultural practices as well. Methods A systematic review (2017-2022) was conducted following Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines, reporting on epidemiological and risk factor reports from different world regions. Medical Subject Heading (MeSH) terms: "Breast neoplasm" "AND" country terms such as "Pakistan/epidemiology", "India/epidemiology", "North America/epidemiology", "South Africa/epidemiology" were used to retrieve 2068 articles from PubMed. After applying inclusion and exclusion terms, 49 papers were selected for systematic review. Results Results of selected articles were summarized based on risk factors, world regions and study type. Risk factors were classified into five categories: demographic, genetic and lifestyle risk factors varied among countries. This review article covers a variety of topics, including regions, main findings, and associated risk factors such as genetic factors, and lifestyle. Several studies revealed that lifestyle choices including diet and exercise could affect a person's chance of developing breast cancer. Breast cancer risk has also been linked to genetic variables, including DNA repair gene polymorphisms and mutations in the breast cancer gene (BRCA). It has been found that most of the genetic variability links to the population of Asia while the cause of breast cancer due to lifestyle modifications has been found in American and British people, indicating that demographic, genetic, and, lifestyle risk factors varied among countries. Conclusion There are many risk factors for breast cancer, which vary in their importance depending on the world region. However, further investigation is required to better comprehend the particular causes of breast cancer in these areas as well as to create efficient prevention and treatment plans that cater to the local population.
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Affiliation(s)
- Amna Roheel
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Lahore, Islamabad, Pakistan
| | - Aslam Khan
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Lahore, Islamabad, Pakistan
| | - Fareeha Anwar
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Lahore, Islamabad, Pakistan
| | - Zunaira Akbar
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Lahore, Islamabad, Pakistan
| | - Muhammad Furqan Akhtar
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Lahore, Islamabad, Pakistan
| | - Mohammad Imran Khan
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Lahore, Islamabad, Pakistan
| | - Mohammad Farhan Sohail
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Lahore, Islamabad, Pakistan
| | - Rizwan Ahmad
- Department of Natural Products, College of Clinical Pharmacy, Imam Andulrahman Bin Faisal University, Rakah, Dammam, Saudi Arabia
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Chakraborty M, Arora M, Ramteke A, Yadav V, Naaz H, Muntakhab M, Tripathi P, K NC. FokI polymorphism of Vitamin D receptor gene and deficiency of serum Vitamin D increases the risk of breast cancer in North Indian women. Endocrine 2023:10.1007/s12020-023-03334-6. [PMID: 36854857 DOI: 10.1007/s12020-023-03334-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 02/16/2023] [Indexed: 03/02/2023]
Abstract
INTRODUCTION Breast cancer is a leading cause of cancer morbidity and mortality in females. Decreased availability of Vitamin D within breast cells, contributed by deficiency of serum Vitamin D and polymorphisms of Vitamin D receptor genes are possible risk factors for breast cancer. OBJECTIVES To study the association of FokI polymorphism of the Vitamin D Receptor gene with breast cancer in females and to study the levels of Vitamin D in breast cancer patients. MATERIALS AND METHODS VDR gene FokI genotyping was done by PCR-RFLP method and levels of serum Vitamin D were estimated by ELISA. Statistical analysis was done with SPSS v.21. RESULTS Serum Vitamin D was significantly lower in newly diagnosed breast cancer patients than in healthy controls (P = 0.016). Females with serum Vitamin D levels in the highest quartile have a lesser risk of breast cancer than those with serum Vitamin D levels in the lowest quartile (O. R = 2.4421, C.I = 1.09-5.45, P = 0.029). The risk of developing breast cancer is higher in women with the polymorphic T allele for VDR FokI genotype (CT/TT) than those homozygous for the wild C allele (CC). (O.R. = 4.295, C.I. = 2.2110-8.3451, p-value = <0.0001). Levels of serum Vitamin D were significantly higher (p < 0.001) in ER + patients and significantly low in those presenting with higher stages of cancer (p = 0.009). CONCLUSIONS FokI polymorphism of VDR gene and low circulating Vitamin D levels increase the risk of developing breast cancer in North Indian females. Serum Vitamin D can be used as a prognostic factor.
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Affiliation(s)
| | - Megha Arora
- Department of Biochemistry, VMMC & Safdarjung Hospital, New Delhi, India
| | - Alka Ramteke
- Department of Biochemistry, VMMC & Safdarjung Hospital, New Delhi, India
| | - Vikas Yadav
- Department of Radiotherapy, VMMC & Safdarjung Hospital, New Delhi, India
| | - Huda Naaz
- Department of Biochemistry, VMMC & Safdarjung Hospital, New Delhi, India
| | - Md Muntakhab
- Department of Biochemistry, VMMC & Safdarjung Hospital, New Delhi, India
| | - Prashant Tripathi
- Department of Biochemistry, VMMC & Safdarjung Hospital, New Delhi, India
| | - Nikhil Chandran K
- Department of Biochemistry, VMMC & Safdarjung Hospital, New Delhi, India
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Filip-Psurska B, Zachary H, Strzykalska A, Wietrzyk J. Vitamin D, Th17 Lymphocytes, and Breast Cancer. Cancers (Basel) 2022; 14:cancers14153649. [PMID: 35954312 PMCID: PMC9367508 DOI: 10.3390/cancers14153649] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 07/20/2022] [Accepted: 07/21/2022] [Indexed: 02/01/2023] Open
Abstract
Simple Summary The effect of vitamin D3 on the development of breast cancer (favorable, ineffective, or even unfavorable) depends on many factors, such as age, menopausal status, or obesity. The immunomodulatory effect of vitamin D may be unfavorable in case of breast cancer progression. The effect of vitamin D on Th17 cells may depend on disease type and patients’ age. Our goal was to summarize the data available and to find indications of vitamin D treatment failure or success. Therefore, in this review, we present data describing the effects of vitamin D3 on Th17 cells, mainly in breast cancer. Abstract Vitamin D3, which is well known to maintain calcium homeostasis, plays an important role in various cellular processes. It regulates the proliferation and differentiation of several normal cells, including immune and neoplastic cells, influences the cell cycle, and stimulates cell maturation and apoptosis through a mechanism dependent on the vitamin D receptor. The involvement of vitamin D3 in breast cancer development has been observed in numerous clinical studies. However, not all studies support the protective effect of vitamin D3 against the development of this condition. Furthermore, animal studies have revealed that calcitriol or its analogs may stimulate tumor growth or metastasis in some breast cancer models. It has been postulated that the effect of vitamin D3 on T helper (Th) 17 lymphocytes is one of the mechanisms promoting metastasis in these murine models. Herein we present a literature review on the existing data according to the interplay between vitamin D, Th17 cell and breast cancer. We also discuss the effects of this vitamin on Th17 lymphocytes in various disease entities known to date, due to the scarcity of scientific data on Th17 lymphocytes and breast cancer. The presented data indicate that the effect of vitamin D3 on breast cancer development depends on many factors, such as age, menopausal status, or obesity. According to that, more extensive clinical trials and studies are needed to assess the importance of vitamin D in breast cancer, especially when no correlations seem to be obvious.
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Dogra AK, Prakash A, Gupta S, Gupta M, Bhat SA. Genetic variations of vitamin D receptor gene and steroid receptors status in breast cancer risk: An updated review. ADVANCES IN BIOMARKER SCIENCES AND TECHNOLOGY 2022. [DOI: 10.1016/j.abst.2022.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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CORRELATION OF PREVALENCE OF THE CORONAVIRUS DISEASE 2019 (2019- nCoV) WITH THE POLYMORPHISMS AT rs7975232 (ApaI) AND rs731236 (TaqI) AMONG 26 POPULATIONS. ANADOLU KLINIĞI TIP BILIMLERI DERGISI 2021. [DOI: 10.21673/anadoluklin.987578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Hayat M, Chen WC, Brandenburg JT, Babb de Villiers C, Ramsay M, Mathew CG. Genetic Susceptibility to Breast Cancer in Sub-Saharan African Populations. JCO Glob Oncol 2021; 7:1462-1471. [PMID: 34623906 PMCID: PMC8509920 DOI: 10.1200/go.21.00089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 07/28/2021] [Accepted: 09/01/2021] [Indexed: 12/24/2022] Open
Affiliation(s)
- Mahtaab Hayat
- Sydney Brenner Institute for Molecular Bioscience, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Division of Human Genetics, National Health Laboratory Service and School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Wenlong Carl Chen
- Sydney Brenner Institute for Molecular Bioscience, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- National Cancer Registry, National Health Laboratory Service, Johannesburg, South Africa
- Non-communicable Diseases Research Division, Wits Health Consortium (PTY) Ltd, Johannesburg, South Africa
| | - Jean-Tristan Brandenburg
- Sydney Brenner Institute for Molecular Bioscience, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Chantal Babb de Villiers
- Division of Human Genetics, National Health Laboratory Service and School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Michèle Ramsay
- Sydney Brenner Institute for Molecular Bioscience, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Christopher G. Mathew
- Sydney Brenner Institute for Molecular Bioscience, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Division of Human Genetics, National Health Laboratory Service and School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Department of Medical and Molecular Genetics, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom
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Bahrami A, Sahebkar A. Vitamin D as a Potential Therapeutic Option in Cancer Treatment: Is There a Role for Chemoprevention? Anticancer Agents Med Chem 2021; 20:2138-2149. [PMID: 32729431 DOI: 10.2174/1871520620999200729192728] [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] [Received: 09/04/2019] [Revised: 02/17/2020] [Accepted: 02/20/2020] [Indexed: 12/27/2022]
Abstract
BACKGROUND Vitamin D (Vit D) serves as a precursor to the potent steroid hormone calcitriol, which regulates numerous genes that control homeostasis, epithelial cell differentiation, proliferation, and apoptosis. Low level of Vit D is implicated in the development and progression of several diseases including bone fractures, cardiovascular disease, diabetes mellitus, and cancers. The present review highlights the role of vitamin D in cancer with a particular emphasis on genetic variants related to Vit D metabolism as well as clinical trials of Vit D supplementation as a potential therapeutic option in the treatment of cancer patients. METHODS Data were collected following an electronic search in the Web of Science, Medline, PubMed, and Scopus databases by using some keywords such as "cancer", "tumor", "malignancy", "vitamin D", "cholecalciferol" and "calcitriol". RESULTS The collected evidence from the studies revealed a consistent and strong association between Vit D status and cancer risk and survival. The associations between Vit D-related genetic variants and cancer survival support the hypothesis that Vit D may affect cancer outcomes. The mechanisms whereby Vit D reduces cancer risk and increases survival are regulation of cellular differentiation, proliferation and apoptosis as well as decreased angiogenesis in tumor microenvironment and inhibition of metastasis. CONCLUSION There is a paucity of evidence-based recommendations for the optimal 25(OH)D levels in patients with cancer and the role of Vit D supplementation for primary or secondary prevention of cancer. Well-designed and sufficiently powered randomized clinical trials are necessary to assess the clinical application of Vit D in enhancing the clinical efficacy of standard and adjuvant chemotherapy regimens.
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Affiliation(s)
- Afsane Bahrami
- Cellular and Molecular Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Amirhossein Sahebkar
- Halal Research Center of IRI, FDA, Tehran, Iran,Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran,Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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11
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Rotimi SO, Rotimi OA, Salhia B. A Review of Cancer Genetics and Genomics Studies in Africa. Front Oncol 2021; 10:606400. [PMID: 33659210 PMCID: PMC7917259 DOI: 10.3389/fonc.2020.606400] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 12/14/2020] [Indexed: 12/24/2022] Open
Abstract
Cancer is the second leading cause of death globally and is projected to overtake infectious disease as the leading cause of mortality in Africa within the next two decades. Cancer is a group of genomic diseases that presents with intra- and inter-population unique phenotypes, with Black populations having the burden of morbidity and mortality for most types. At large, the prevention and treatment of cancers have been propelled by the understanding of the genetic make-up of the disease of mostly non-African populations. By the same token, there is a wide knowledge gap in understanding the underlying genetic causes of, and genomic alterations associated with, cancer among black Africans. Accordingly, we performed a review of the literature to survey existing studies on cancer genetics/genomics and curated findings pertaining to publications across multiple cancer types conducted on African populations. We used PubMed MeSH terms to retrieve the relevant publications from 1990 to December 2019. The metadata of these publications were extracted using R text mining packages: RISmed and Pubmed.mineR. The data showed that only 0.329% of cancer publications globally were on Africa, and only 0.016% were on cancer genetics/genomics from Africa. Although the most prevalent cancers in Africa are cancers of the breast, cervix, uterus, and prostate, publications representing breast, colorectal, liver, and blood cancers were the most frequent in our review. The most frequently reported cancer genes were BRCA1, BRCA2, and TP53. Next, the genes reported in the reviewed publications’ abstracts were extracted and annotated into three gene ontology classes. Genes in the cellular component class were mostly associated with cell part and organelle part, while those in biological process and molecular function classes were mainly associated with cell process, biological regulation, and binding, and catalytic activity, respectively. Overall, this review highlights the paucity of research on cancer genomics on African populations, identified gaps, and discussed the need for concerted efforts to encourage more research on cancer genomics in Africa.
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Affiliation(s)
- Solomon O Rotimi
- Department of Translational Genomics, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States.,Department of Biochemistry, Covenant University, Ota, Nigeria
| | - Oluwakemi A Rotimi
- Department of Translational Genomics, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States.,Department of Biochemistry, Covenant University, Ota, Nigeria
| | - Bodour Salhia
- Department of Translational Genomics, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States.,Norris Comprehensive Cancer Centre, University of Southern California, Los Angeles, CA, United States
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Matini AH, Jafarian-Dehkordi N, Bahmani B, Sharifi M, Jahantigh D, Mazoochi T. Association of ApaI and TaqI polymorphisms in VDR Gene with Breast Cancer. Asian Pac J Cancer Prev 2020; 21:2667-2672. [PMID: 32986367 PMCID: PMC7779446 DOI: 10.31557/apjcp.2020.21.9.2667] [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: 03/18/2020] [Indexed: 12/14/2022] Open
Abstract
Background: Vitamin D inhibits cell proliferation via the vitamin D receptor (VDR), which may affect breast cancer risk. This study aimed to investigate the association of ApaI and TaqI polymorphisms of the VDR gene with breast cancer risk which followed by stratified analysis. Materials and methods: A case-control study was conducted on 150 breast cancer patients and 150 healthy controls. VDR ApaI and TaqI genotyping were performed by PCR-RFLP. Some demographic and pathologic features of patients were extracted from their archived files and then were analyzed by genotypes distributions. Results: For ApaI polymorphism, our data showed a significant difference between the patient and healthy groups for mutant allele carriers compared with those with AA genotype. Besides, statistical analysis showed that there was a significant association between the C allele and the increased risk of breast cancer. For TaqI polymorphism, statistical analysis revealed that there was a significant association between CC genotype and increased risk of breast cancer. Also, there was a significant association between the C allele and the increased risk of breast cancer. In a preliminary study, stratified analysis based on the size of tumor and lymph node metastasis revealed no significant association between two ApaI and TaqI variations and these parameters. Conclusions: Based on our results, the VDRApaI and TaqI variations could be considered as genetic risk factors for breast cancer. However, further studies with a larger sample size are required to obtain more accurate outcomes, especially in stratified analysis.
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Affiliation(s)
- Amir Hassan Matini
- Department of Pathology, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Negar Jafarian-Dehkordi
- Department of Pathology, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Banafshe Bahmani
- Department of Pathology, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Mehran Sharifi
- Department of Hematology and Oncology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Danial Jahantigh
- Department of Biology, Faculty of Science, University of Sistan and Baluchestan, Zahedan, Iran
| | - Tahereh Mazoochi
- Department of Pathology, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
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13
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Vitamin D regulates cell viability, migration and proliferation by suppressing galectin-3 (Gal-3) gene in ovarian cancer cells. J Biosci 2020. [DOI: 10.1007/s12038-020-00038-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Nakhl S, Sleilaty G, Chouery E, Salem N, Chahine R, Farès N. FokI vitamin D receptor gene polymorphism and serum 25-hydroxyvitamin D in patients with cardiovascular risk. Arch Med Sci Atheroscler Dis 2019; 4:e298-e303. [PMID: 32368685 PMCID: PMC7191939 DOI: 10.5114/amsad.2019.91437] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 11/19/2019] [Indexed: 01/02/2023] Open
Abstract
INTRODUCTION The biological actions of vitamin D are mediated through vitamin D receptor (VDR). Numerous single-nucleotide polymorphisms (SNPs) in the VDR gene have been identified, and some have been associated with cardiovascular disease (CVD) risk factors. This study aims to evaluate the association of five SNPs in the VDR gene with 25-hydroxyvitamin D (25[OH]D) levels in patients with at least one CVD risk factor. MATERIAL AND METHODS Genomic DNA was sequenced using standard Sanger methods for five VDR SNPs (BsmI rs1544410; ApaI rs7975232; Cdx2 rs11568820; TaqI rs731236; FokI rs2228570) in 50 Mediterranean subjects having hypovitaminosis D with at least one documented CVD risk factor, aged 18 years or more. The collected variables were serum levels of (25[OH]D), HbA1c, fasting plasma glucose, triglycerides, LDL cholesterol, and total cholesterol. RESULTS BsmI, ApaI, and TaqI were moderately to highly intercorrelated. Cdx2 was less frequent than expected. With respect to the number of mutations in FokI, levels of (25 [OH]D) were 11.2 ±5.5 ng/ml in the absence of mutations, 12.6 ±4.7 ng/ml in the presence of one mutation, and 16.5 ± 5.5 ng/ml in the presence of two mutations. CONCLUSIONS FokI polymorphism is more frequent in subjects with cardiovascular risk factors than in the general Caucasian population.
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Affiliation(s)
- Sahar Nakhl
- Research Laboratory in Physiology and Physiopathology (LRPP), Health Technology Centre, Faculty of Medicine, Saint Joseph University, Beirut, Lebanon
- Research Laboratory in Oxidative Stress and Antioxidants, Faculty of Medical Sciences and Doctoral School in Science and Technology, Lebanese University, Beirut, Lebanon
| | - Ghassan Sleilaty
- Faculty of Medicine, Higher Institute of Public Health, Saint Joseph University, Beirut, Lebanon
| | - Eliane Chouery
- Medical Genetics Unit, Faculty of Medicine, Saint Joseph University, Beirut, Lebanon
| | - Nabiha Salem
- Medical Genetics Unit, Faculty of Medicine, Saint Joseph University, Beirut, Lebanon
| | - Ramez Chahine
- Research Laboratory in Oxidative Stress and Antioxidants, Faculty of Medical Sciences and Doctoral School in Science and Technology, Lebanese University, Beirut, Lebanon
- Faculty of Public Health, Sagesse University, Beirut, Lebanon
| | - Nassim Farès
- Research Laboratory in Physiology and Physiopathology (LRPP), Health Technology Centre, Faculty of Medicine, Saint Joseph University, Beirut, Lebanon
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Francis I, AlAbdali N, Kapila K, John B, Al-Temaimi RA. Vitamin D pathway related polymorphisms and vitamin D receptor expression in breast cancer. INT J VITAM NUTR RES 2019; 91:124-132. [PMID: 31623531 DOI: 10.1024/0300-9831/a000615] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Vitamin D deficiency is an emerging risk factor for breast cancer suggesting its role in breast cancer pathogenesis. Recent evidence suggests vitamin D receptor (VDR) expression is a prognosis predictor in breast cancer. We set out to determine the status of VDR expression in histologically characterized breast cancers, and whether common genetic variants modify VDR expression in breast cancer. One-hundred and twenty Kuwaiti female breast cancer fixed tissues were assessed for VDR expression to identify the level and location of its expression by immunohistochemistry. VDR variants (rs731236, rs2228570), and vitamin D binding protein (VDBP) variants (rs4588, rs7041) genotypes were ascertained in breast cancer specimens using Taqman genotyping assays. VDR nuclear expression correlated with low grade tumors (p = 0.01), whereas cytoplasmic expression correlated with lymph node positive tumors (p = 0.03). Absence of VDR expression was a marker for high-grade dedifferentiated tumors (p = 0.01). VDBP rs7041 associated with breast cancer risk (OR 1.92, 95% CI: 1.34 - 2.73; p = 0.0004), and VDR rs2228570 correlated with increased VDR cytoplasmic expression (p < 0.0001). In conclusion, VDR expression is altered in breast cancer confirming its involvement in breast cancer progression. Genetic factors appear to play a role in breast cancer risk, and may modify tumor sensitization to vitamin D.
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Affiliation(s)
- Issam Francis
- Department of Pathology, Faculty of Medicine, Kuwait University, Jabriya, Kuwait
| | - Noora AlAbdali
- Postgraduate Medical Sciences Program, Faculty of Medicine, Kuwait University, Jabriya, Kuwait
| | - Kusum Kapila
- Department of Pathology, Faculty of Medicine, Kuwait University, Jabriya, Kuwait
| | - Bency John
- Department of Pathology, Faculty of Medicine, Kuwait University, Jabriya, Kuwait
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