scholarly journals Role of Vitamin A in Mammary Gland Development and Lactation

Nutrients ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 80 ◽  
Author(s):  
M. Teresa Cabezuelo ◽  
Rosa Zaragozá ◽  
Teresa Barber ◽  
Juan R. Viña
Keyword(s):  
Retinoic Acid ◽  
Mammary Gland ◽  
Vitamin A ◽  
Vitamin A Deficiency ◽  
Retinoid Signaling ◽  
Nutritional Problem ◽  
Pregnancy And Lactation ◽  
Gland Development

Vitamin A (all-trans-retinol), its active derivatives retinal and retinoic acid, and their synthetic analogues constitute the group of retinoids. It is obtained from diet either as preformed vitamin A or as carotenoids. Retinal plays a biological role in vision, but most of the effects of vitamin A are exerted by retinoic acid, which binds to nuclear receptors and regulates gene transcription. Vitamin A deficiency is an important nutritional problem, particularly in the developing world. Retinol and carotenoids from diet during pregnancy and lactation influence their concentration in breast milk, which is important in the long term, not only for the offspring, but also for maternal health. In this study, we review the role of vitamin A in mammary gland metabolism, where retinoid signaling is required not only for morphogenesis and development of the gland and for adequate milk production, but also during the weaning process, when epithelial cell death is coupled with tissue remodeling.

scholarly journals Model of Long-Term Vitamin A Deficiency in the Mammary Gland of Virgin Rats

OALib ◽  
2017 ◽  
Vol 04 (09) ◽  
pp. 1-14 ◽  
Author(s):  
Miriam Ester Vasquez Gomez ◽  
Silvia Varas ◽  
Maria Sofia Gimenez
Keyword(s):  
Mammary Gland ◽  
Vitamin A ◽  
Vitamin A Deficiency

scholarly journals Mammary gland adipocytes in lactation cycle, obesity and breast cancer

2021 ◽  
Author(s):  
Georgia Colleluori ◽  
Jessica Perugini ◽  
Giorgio Barbatelli ◽  
Saverio Cinti
Keyword(s):  
Breast Cancer ◽  
Mammary Gland ◽  
Epithelial Cells ◽  
Close Association ◽  
Critical Role ◽  
Exocrine Gland ◽  
Plastic Properties ◽  
Lactation Cycle ◽  
Gland Development

AbstractThe mammary gland (MG) is an exocrine gland present in female mammals responsible for the production and secretion of milk during the process of lactation. It is mainly composed by epithelial cells and adipocytes. Among the features that make the MG unique there are 1) its highly plastic properties displayed during pregnancy, lactation and involution (all steps belonging to the lactation cycle) and 2) its requirement to grow in close association with adipocytes which are absolutely necessary to ensure MG’s proper development at puberty and remodeling during the lactation cycle. Although MG adipocytes play such a critical role for the gland development, most of the studies have focused on its epithelial component only, leaving the role of the neighboring adipocytes largely unexplored. In this review we aim to describe evidences regarding MG’s adipocytes role and properties in physiologic conditions (gland development and lactation cycle), obesity and breast cancer, emphasizing the existing gaps in the literature which deserve further investigation.

Genotype Effects on β-Carotene Conversion to Vitamin A: Implications on Reducing Vitamin A Deficiency in the Philippines

2021 ◽  
pp. 037957212110602
Author(s):  
Mark Pretzel P. Zumaraga ◽  
Jose Maria Reynaldo Apollo Arquiza ◽  
Mae Anne Concepcion ◽  
Leah Perlas ◽  
Ma. Neda Alcudia-Catalma ◽  
...  
Keyword(s):  
Vitamin A ◽  
Children And Adolescents ◽  
Vitamin A Deficiency ◽  
The Philippines ◽  
Fisher Exact Test ◽  
National Capital Region ◽  
Nutrition Survey ◽  
Vitamin A Status ◽  
Genotype Frequencies

Background: The study aimed to identify two beta-carotene 15,15′-monooxygenase (BCMO1) mutations, namely R267S and A379V, and determine their association with vitamin A status among Filipinos 6 to 19 years old respondents of the 2013 Philippine National Nutrition Survey living in the National Capital Region. Materials and Methods: This study followed cross-sectional design. Whole blood specimen was collected in the morning and was used as source of genomic DNA and serum for retinol concentration determination. Fisher exact test was performed to determine whether genotype frequencies were associated to retinol concentrations/vitamin A deficiency status. A level of P < .05 was identified as significant. Results: A total of 693 Filipino children and adolescents were included. Of the 693, there were at least 7.6% who bears the combined mutations for R267S + A379V. Association analysis showed that an inverse relationship exists between the A379V TT variant and vitamin A status. Although the exact role of these identified polymorphisms on retinol/carotenoid metabolism need to be confirmed in dedicated functional studies. Conclusion: This study has identified for the first time the presence of 2 nonsynonymous genetic variants/mutations in the coding region of BCMO1 gene. Interestingly, one of these two variants, the A379V T, was found to be associated with vitamin A status. It is, therefore, warranted to investigate the role of BCMO1 variants for the success of supplementation programs and fortification efforts among vulnerable populations in this region. Genetic variability should be considered for future provitamin A supplementation recommendations among children and adolescents in the Philippines.

Sign in / Sign up

Export Citation Format

Share Document