Vitamin A: A Review Article

Author(s):  
Bhawan B. Bhende

Vitamin A has important function in the body. Vitamin A is involved in growth, an reproduction. In this paper description, function and deficiency diseases of vitamin A has been delineated here with. Vitamin A is an essential micronutrient for the normal functioning of the visual system, growth and development, immunity and reproduction. Vitamin A is a constituent of visual pigment and maintains epithelium. It protects against some epithelial cancer Vitamin A being a potent antioxidant is required for cell regulation. To combat the deficiency of vitamin A in community, awareness of their importance and their source plays a vital role. Food-based approaches have been reviewed and judged to have a promising role in integrated strategies, but many gaps in knowledge were identified; more well-designed studies on efficacy, effectiveness, cost effectiveness, and sustainability of food-based approaches are needed. The main sources of preformed vitamin A or retinol are liver, whole milk, fish oil and egg. Vitamin A is present in many animal tissues and is readily absorbed from such dietary sources in the terminal small intestine.

2021 ◽  
Vol 8 (3) ◽  
pp. 169-175
Author(s):  
Wilma Delphine Silvia CR ◽  
Rashmi R N ◽  
Venkatesha

Zinc is a micromineral present in the body tissues and fluids. Zinc is absorbed from the duodenum and stored in the form of metallothionine in the liver and excreted through sweat. Zinc plays a vital role in protein biosynthesis, gene expression; it also acts as an antioxidant and is used in the growth of the fungus. Due to the deficiency of zinc, a patient will be suffering from poor wound healing, lesions of skin, impaired spermatogenesis, hyperkeratosis, dermatitis and alopecia.An unprecedented COVID-19 pandemic caused by a novel corona virus called SARS-CoV-2, produces severe acute respiratory distress syndrome (ARDS). Zinc is used to treat COVID 19 because it improves the immunity. As the COVID patients are susceptible to zinc deficiency, they are prescribed with zinc supplements. Intake of zinc more than1000mg/day causes Zinc toxicity. Fungus utilises zinc for its growth. Mucormycosis caused by fungus Rhizopus species seen in most of the post COVID patients. Since, Zinc has assumed importance in this COVID 19 pandemic, this review article unfathoms the explicit roles of Zinc in humans.


Author(s):  
Hiwa M. Ahmed ◽  
Seyed Nabavi ◽  
Sahar Behzad

: Natural products and medicinal plants have played a vital role in providing healthcare and ensuring wellbeing for many civilisations since antiquity. It is estimated that around 50% of drugs in the market have a natural product origin especially medicinal plants and herbal drugs, animals, fungi, and marine organisms. Some of these biologically active constituents of extracts have low absorption and distribution which, as a result, leads to loss of bioavailability and efficacy and might hamper their applications in the clinic. To overcome these impediments for the formulation of herbal drugs, food supplements and essential oils, several nanomedical approaches such as liposomes, microemulsions, polymeric nanoparticles, solid lipid nanoparticles (SLNs), liquid crystal systems (LC), and precursor systems for liquid crystals (PSLCs) have been proposed. Nanoparticles have been used to modify and ameliorate the pharmacokinetic and pharmacodynamic properties of different drugs, thus incorporating biotechnological systems may be useful to enhance the bioavailability and bioactivity of herbal drug formulations. Consequently, essential for any natural compounds is the extent of its absorption after being ingested and its ability to be distributed in various tissues or organs of the body. The present review article aims to give an overview regarding the recent advancements in developing herbal drug formulations based on nanoparticle technologies.


Author(s):  
Meena S. Farman ◽  
Rana Hazim Hamoode ◽  
Dalal A. Sattar

Around 80% of the hyperthyroidism cases of women of childbearing age are inflammatory due to Graves' disease. Production and manifestation of other than gestational and early-onset diabetes may be linked to the hormonal modifications in the maternal immune system during birth. Therefore, in addition to the hormonal influences, the pregnancy test will be affected by various anatomical modifications or alterations seen in the body during pregnancy. For the health of a woman and the start of her pregnancy, thyroid hormones are very significant. These hormones are critical in early development and play a vital role in continuing the fetus's growth since conception. Women with untreated or inadequately controlled hyperthyroidism are at risk of giving birth problems. Future diseases, particularly those with IUGRTH producing so many fetuses. The treatment of hyperthyroid pregnant people is so tricky, and medical staff involvement is needed to ensure that it's monitored and treated in various ways. Pregnant women are prescribed antithyroid medications, and it is the medication of preference for most pregnant women (ATDs). Although both of these medications are transmitted to the fetus by the mother's bloodstream, they are significantly efficient in the treatment of maternal hyperthyroidism. Still, they need caution throughout the second half of pregnancy because of the possibility of fetopathy. Except in the first trimesters from weeks 6 to 10 weeks, the most prevalent adverse effect is abnormalities in the fetal; even with that as a caveat, the incidence of birth defects is high during the first trimester with the help of ATDs. The treatment of hyperthyroidism during pregnancy goes into four issues that are currently of major importance to obstetricians: its aetiology, disease occurrence, proper detection, under treatment, complications, and actual or a missed diagnosis and intervention, and finally, the method of dealing with the problem.


2014 ◽  
Vol 84 (Supplement 1) ◽  
pp. 52-59 ◽  
Author(s):  
Sherry A. Tanumihardjo ◽  
Anura V. Kurpad ◽  
Janet R. Hunt

The current use of serum retinol concentrations as a measurement of subclinical vitamin A deficiency is unsatisfactory for many reasons. The best technique available for vitamin A status assessment in humans is the measurement of total body pool size. Pool size is measured by the administration of retinol labelled with stable isotopes of carbon or hydrogen that are safe for human subjects, with subsequent measurement of the dilution of the labelled retinol within the body pool. However, the isotope techniques are time-consuming, technically challenging, and relatively expensive. There is also a need to assess different types of tracers and doses, and to establish clear guidelines for the use and interpretation of this method in different populations. Field-friendly improvements are desirable to encourage the application of this technique in developing countries where the need is greatest for monitoring the risk of vitamin A deficiency, the effectiveness of public health interventions, and the potential of hypervitaminosis due to combined supplement and fortification programs. These techniques should be applied to validate other less technical methods of assessing vitamin A deficiency. Another area of public health relevance for this technique is to understand the bioconversion of β-carotene to vitamin A, and its relation to existing vitamin A status, for future dietary diversification programs.


2020 ◽  
Vol 23 (12) ◽  
pp. 51-54
Author(s):  
S.A. Tanaseva ◽  
◽  
О.K. Ermolaeva ◽  
L.E. Matrosova ◽  
A.Z. Mukharlyamov ◽  
...  
Keyword(s):  

Author(s):  
Oksana Rybachok

«Man is what he eats,» these words belong to the great Pythagoras. He meant by these words the connection of the origin of consumed food with the spiritual development of man. In fact, a lot depends on the nature of nutrition, the quality of food and, of course, on the degree of its perception by the body. Digestion process begins not in the stomach, but directly in the oral cavity as a result of mechanical processing of products with teeth and under the influence of the secretion of the salivary glands. That is why healthy teeth are the key to the normal functioning of the whole organism — people should start taking care of their teeth from the early childhood and dentists, who are far from being beloved by everybody and are often carelessly evaded, are called upon to help keep the teeth healthy.


2019 ◽  
Vol 15 (2) ◽  
pp. 102-108 ◽  
Author(s):  
Rashmi Saxena Pal ◽  
Yogendra Pal ◽  
Pranay Wal

Background: Postpartum is an important phase of life after childbirth. It needs to be highly important as in terms of health in future life. This time brings lots of complications with it. Lots of aspects need to be looked after as the care of the new mom is essential to bring back her stamina and strength. Objective: The objective of this review article is to explore the heeding power hidden in nature for returning back to the mothers to the pre-pregnancy state. There are various areas of concern after postpartum to heal up the body overall, such as to heal up the uterus, providing galactagogues, nutritives, maintenance of hormones and restoring back the strength and tone of the abdomen. Materials and Methods: A literature search has been done on the various herbs, which fulfill the various desired aspects to be looked after post pregnancy. Results: There are various herbs present in nature, regarding their hidden potential still the awareness is not up to the mark. This review highlights the various plants which have been proven to be useful in dealing the post-pregnancy issues. They deal with all the aspects of complications and issues occurring post pregnancy. They heal the uterus which has undergone so many types of changes, maintains the balance of hormones back, besides providing nutrition and increasing the production of milk, they also restore back the tone and strength of the walls of the abdomen. Conclusion: These herbs are full-fledged with the phytoconstituents that heal the whole system after delivery. The need of present time is to take patiently these as the source of medicines regularly under medical supervision to overcome the various concerned problems of post pregnancy.


Author(s):  
Saylee Deshmukh ◽  
Vyas M. K.

Curd, Paneer and Cheese are rich source of milk protein, calcium, Vitamin A, Phosphorous, vitamins, minerals and protein which are required by the body in high proportions for healthy growth and development. It is common food in India. Cheese is also a rich source of fat. Curd, Paneer and Cheese can be correlated with Dadhi, Paneer and Cheese in Ayurveda classics which are listed in Nitya Asevaniya Ahara Dravya (food items not to be taken in daily diet). Present study aims to explain rationale behind description of these food items as Nitya Asevaniya Ahara Dravya.


2021 ◽  
Vol 22 (15) ◽  
pp. 7931
Author(s):  
Ning Liu ◽  
Shiqiang Sun ◽  
Pengjie Wang ◽  
Yanan Sun ◽  
Qingjuan Hu ◽  
...  

Serotonin, also known as 5-hydroxytryptamine (5-HT), is a metabolite of tryptophan and is reported to modulate the development and neurogenesis of the enteric nervous system, gut motility, secretion, inflammation, sensation, and epithelial development. Approximately 95% of 5-HT in the body is synthesized and secreted by enterochromaffin (EC) cells, the most common type of neuroendocrine cells in the gastrointestinal (GI) tract, through sensing signals from the intestinal lumen and the circulatory system. Gut microbiota, nutrients, and hormones are the main factors that play a vital role in regulating 5-HT secretion by EC cells. Apart from being an important neurotransmitter and a paracrine signaling molecule in the gut, gut-derived 5-HT was also shown to exert other biological functions (in autism and depression) far beyond the gut. Moreover, studies conducted on the regulation of 5-HT in the immune system demonstrated that 5-HT exerts anti-inflammatory and proinflammatory effects on the gut by binding to different receptors under intestinal inflammatory conditions. Understanding the regulatory mechanisms through which 5-HT participates in cell metabolism and physiology can provide potential therapeutic strategies for treating intestinal diseases. Herein, we review recent evidence to recapitulate the mechanisms of synthesis, secretion, regulation, and biofunction of 5-HT to improve the nutrition and health of humans.


2021 ◽  
Vol 12 (2) ◽  
pp. 26
Author(s):  
Sebastian Wilk ◽  
Aleksandra Benko

Biopolymers formed into a fibrous morphology through electrospinning are of increasing interest in the field of biomedicine due to their intrinsic biocompatibility and biodegradability and their ability to be biomimetic to various fibrous structures present in animal tissues. However, their mechanical properties are often unsatisfactory and their processing may be troublesome. Thus, extensive research interest is focused on improving these qualities. This review article presents the selection of the recent advances in techniques aimed to improve the electrospinnability of various biopolymers (polysaccharides, polynucleotides, peptides, and phospholipids). The electrospinning of single materials, and the variety of co-polymers, with and without additives, is covered. Additionally, various crosslinking strategies are presented. Examples of cytocompatibility, biocompatibility, and antimicrobial properties are analyzed. Special attention is given to whey protein isolate as an example of a novel, promising, green material with good potential in the field of biomedicine. This review ends with a brief summary and outlook for the biomedical applicability of electrospinnable biopolymers.


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