Vitamin D and Bone Health
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Hypophosphatasia Could Explain Some Atypical Femur Fractures
Hypophosphatasia Could Explain Some Atypical Femur Fractures What we know Hypophosphatasia (HPP) is a rare genetic disease that affects the development of bones and teeth in children (Whyte 1985). HPP is caused by the absence or reduced amount of an enzyme called tissue-nonspecific alkaline phosphatase (TAP), also called bone-specific alkaline phosphatase (BSAP). The absence of TAP raises the level of inorganic pyrophosphate (Pi), which prevents calcium and phosphate from creating strong, mineralized bone. Without TAP, bones can become weak. In its severe form, HPP is fatal and happens in 1/100,000 births. Because HPP is genetic, it can appear in adults as well. A recent study has identified a milder, more common form of HPP that occurs in 4 of 1000 adults (Dahir 2018). This form of HPP is usually seen in early middle aged adults who have low bone density and sometimes have stress fractures in the feet or thigh bone. Sometimes these patients lose their baby teeth early, but not always. HPP is diagnosed by measuring blood levels of TAP and vitamin B6. An elevated vitamin B6 level [serum pyridoxal 5-phosphate (PLP)] (Whyte 1985) in a patient with a TAP level ≤40 or in the low end of normal can be diagnosed with HPP. Almost half of the adult patients with HPP in the large study had TAP >40, but in the lower end of the normal range (Dahir 2018). The connection between hypophosphatasia and osteoporosis Some people who have stress fractures get a bone density test and are treated with an osteoporosis medicine if their bone density results are low. -
Is There an Ideal Diet to Protect Against Iodine Deficiency?
nutrients Review Is There an Ideal Diet to Protect against Iodine Deficiency? Iwona Krela-Ka´zmierczak 1,† , Agata Czarnywojtek 2,3,†, Kinga Skoracka 1,* , Anna Maria Rychter 1 , Alicja Ewa Ratajczak 1 , Aleksandra Szymczak-Tomczak 1, Marek Ruchała 2 and Agnieszka Dobrowolska 1 1 Department of Gastroenterology, Dietetics and Internal Diseases, Poznan University of Medical Sciences, Heliodor Swiecicki Hospital, 60-355 Poznan, Poland; [email protected] (I.K.-K.); [email protected] (A.M.R.); [email protected] (A.E.R.); [email protected] (A.S.-T.); [email protected] (A.D.) 2 Department of Endocrinology, Metabolism and Internal Medicine, Poznan University of Medical Sciences, 60-355 Poznan, Poland; [email protected] (A.C.); [email protected] (M.R.) 3 Department of Pharmacology, Poznan University of Medical Sciences, 60-806 Poznan, Poland * Correspondence: [email protected]; Tel.: +48-665-557-356 or +48-8691-343; Fax: +48-8691-686 † These authors contributed equally to this work. Abstract: Iodine deficiency is a global issue and affects around 2 billion people worldwide, with preg- nant women as a high-risk group. Iodine-deficiency prevention began in the 20th century and started with global salt iodination programmes, which aimed to improve the iodine intake status globally. Although it resulted in the effective eradication of the endemic goitre, it seems that salt iodination did not resolve all the issues. Currently, it is recommended to limit the consumption of salt, which is the main source of iodine, as a preventive measure of non-communicable diseases, such as hypertension or cancer the prevalence of which is increasing. -
Plant-Based Nutrition Leaflet
Calcium There are many plant-based sources of calcium. The good news for vegans is that, due to how the mineral is absorbed, vegetables can be a better source of calcium than dairy. Plant-based nutrition Our top tip for reaching your daily ‘kale-cium’ intake is to include portions of green and leafy vegetables in your diet. Calcium can also be found in fortified foods like some plant Healthy vegan living milks and tofu, oranges and dried fruits. for everyone Vitamin D helps our body to absorb and retain calcium. Therefore, a partnership of sufficient vitamin D and calcium is important in maintaining healthy bones. As well as getting healthy sun exposure, vitamin D is added to foods such as fortified soymilk, juice and breakfast cereals. Vitamin B12 All vegans need to ensure they are getting sufficient B12. Everyone over the age of 50 (whether vegan or not) requires reliable sources of vitamin B12 from fortified foods or supplements – so vegans, as usual, are just getting ahead of the game. The only reliable animal-free sources of vitamin B12 are fortified foods and B12 supplements. Vitamin B12, whether in supplements, fortified foods, or animal products, comes through micro-organisms. Look for B12-fortified foods such as plant milks, spreads, cereals and nutritional yeast (the latter is much more appetising than it sounds). The Vegan Society’s Veg1 supplement has been specifically formulated for vegans, and contains your Recommended Daily Allowance of vitamin B12. Iron It’s straightforward to obtain enough iron when you eat a rainbow of vegetables, fruits and other whole plant foods each day. -
A Novel Germline Mutation of ADA2 Gene In
International Journal of Molecular Sciences Case Report A Novel Germline Mutation of ADA2 Gene in Two “Discordant” Homozygous Female Twins Affected by Adenosine Deaminase 2 Deficiency: Description of the Bone-Related Phenotype Silvia Vai 1,†, Erika Marin 1,† , Roberta Cosso 2 , Francesco Saettini 3, Sonia Bonanomi 3, Alessandro Cattoni 3, Iacopo Chiodini 1,4 , Luca Persani 1,4 and Alberto Falchetti 1,2,* 1 Department of Endocrine and Metabolic Diseases, IRCCS, Istituto Auxologico Italiano, 20145 Milan, Italy; [email protected] (S.V.); [email protected] (E.M.); [email protected] (I.C.); [email protected] (L.P.) 2 IRCCS, Istituto Auxologico Italiano, San Giuseppe Hospital, 28824 Verbania, Italy; [email protected] 3 Department of Pediatrics, Università degli Studi di Milano-Bicocca, Fondazione MBBM, San Gerardo Hospital, 20100 Monza, Italy; [email protected] (F.S.); [email protected] (S.B.); [email protected] (A.C.) 4 Department of Medical Biotechnologies and Translational Medicine, University of Milan, 20122 Milan, Italy * Correspondence: [email protected] † These authors equally contributed to this paper. Abstract: Adenosine Deaminase 2 Deficiency (DADA2) syndrome is a rare monogenic disorder preva- lently linked to recessive inherited loss of function mutations in the ADA2/CECR1 gene. It consists Citation: Vai, S.; Marin, E.; Cosso, R.; of an immune systemic disease including autoinflammatory vasculopathies, with a frequent onset Saettini, F.; Bonanomi, S.; Cattoni, A.; at -
Vitamin and Mineral Safety 3Rd Edition (2013) Council for Responsible Nutrition (CRN)
EXCERPTED FROM: Vitamin and Mineral Safety 3rd Edition (2013) Council for Responsible Nutrition (CRN) www.crnusa.org Vitamin B12 Introduction Vitamin B12 helps maintain the body’s nervous system and blood cells and supports the production of DNA. Vitamin B12 also helps prevents a type of anemia and has been termed the “anti-pernicious anemia dietary factor.” Vitamin B12 is also the only known physiologically important compound that contains cobalt, and therefore the various forms of vitamin B12 are known collectively as cobalamins. Vitamin B12 is a cofactor in two enzymes that are fundamental in facilitating growth in humans. In the methylcobalamin form, vitamin B12 is the direct cofactor for methionine synthetase, the enzyme that recycles homocysteine back to methionine. Here, vitamin B12 and folic acid have closely related roles in one-carbon metabolism. In the adenosylcobalamin form, vitamin B12 is the cofactor in methylmalonyl-coenzyme A mutase. Both reactions are involved in promoting the rapid growth and proliferation of bone marrow cells and ultimately red blood cells (Expert Group on Vitamins and Minerals [EVM] 2003). Vitamin B12 is essential for the function and maintenance of the central nervous system, and severe deficiency in persons with pernicious anemia produces the neurological disease of posterolateral spinal cord degeneration (Herbert and Das 1994). The direct cause of pernicious anemia, in fact, is vitamin B12 deficiency, but the underlying defect is the absence of an intrinsic factor produced by specific stomach cells and needed for intestinal absorption of vitamin B12. Without this intrinsic factor, absorption is greatly reduced or fails, and a severe and persistent deficiency develops that is not preventable by the usual dietary levels of vitamin B12. -
Overuse Injuries in Sport: a Comprehensive Overview R
Aicale et al. Journal of Orthopaedic Surgery and Research (2018) 13:309 https://doi.org/10.1186/s13018-018-1017-5 REVIEW Open Access Overuse injuries in sport: a comprehensive overview R. Aicale1*, D. Tarantino1 and N. Maffulli1,2 Abstract Background: The absence of a single, identifiable traumatic cause has been traditionally used as a definition for a causative factor of overuse injury. Excessive loading, insufficient recovery, and underpreparedness can increase injury risk by exposing athletes to relatively large changes in load. The musculoskeletal system, if subjected to excessive stress, can suffer from various types of overuse injuries which may affect the bone, muscles, tendons, and ligaments. Methods: We performed a search (up to March 2018) in the PubMed and Scopus electronic databases to identify the available scientific articles about the pathophysiology and the incidence of overuse sport injuries. For the purposes of our review, we used several combinations of the following keywords: overuse, injury, tendon, tendinopathy, stress fracture, stress reaction, and juvenile osteochondritis dissecans. Results: Overuse tendinopathy induces in the tendon pain and swelling with associated decreased tolerance to exercise and various types of tendon degeneration. Poor training technique and a variety of risk factors may predispose athletes to stress reactions that may be interpreted as possible precursors of stress fractures. A frequent cause of pain in adolescents is juvenile osteochondritis dissecans (JOCD), which is characterized by delamination and localized necrosis of the subchondral bone, with or without the involvement of articular cartilage. The purpose of this compressive review is to give an overview of overuse injuries in sport by describing the theoretical foundations of these conditions that may predispose to the development of tendinopathy, stress fractures, stress reactions, and juvenile osteochondritis dissecans and the implication that these pathologies may have in their management. -
Iodine Fact Sheet & References
Iodine Fact Sheet and References What is iodine? • Essential trace mineral • Critical in the synthesis of thyroid hormones. The thyroid gland converts iodine into T3 (triiodothyronine) and T4 (thyrodine) hormones, which control metabolism throughout the body. • Excreted through urine Where do we find iodine? • Table salt (iodized salt) – Beginning in the 1920s, iodine was added to table salt and to other foods to prevent iodine deficiency. • Seafood and seaweed • Dairy and grains (amounts vary depending on source) Who’s impacted? • 2.2 billion people worldwide are at risk for Iodine Deficiency Disorders (IDDs). Of these, 30-70% have goiter and 1-10% have cretinism. • People living in the Great Lakes region (including Minnesota) may have inadequate intake due to low levels of iodine in the soil in which crops are grown. • Iodine deficiency virtually eliminated in the U.S. and many Western nations, due to iodization of salt. However: o 1970s-1990s: median U.S. urinary iodine (UI) excretion fell 50%, indicating indicate intake, and possible increased risk for moderate IDD. Experts thought this might be attributable to a decreased intake of salt; removal of iodate conditioners in store-bought breads; and an increased use of non-iodized salt in manufactured or premade convenience foods o 2001-2002 NHANES data indicated that levels had stabilized. Even so, women of reproductive age consistently had the lowest UI levels. • Women of reproductive age are an important group to monitor: o Pregnant women are vulnerable to iodine deficiency due to an increased renal clearance of iodine and transfer of iodine to fetus. o Iodine supplementation during pregnancy is often delayed, because women are unaware they are pregnant during early weeks of gestation. -
Failure of Vitamin B6 to Reverse the L-Dopa Effect in Patients on a Dopa Decarboxylase Inhibitor
J Neurol Neurosurg Psychiatry: first published as 10.1136/jnnp.34.6.682 on 1 December 1971. Downloaded from J. Neurol. Neurosurg. Psychiat., 34, 682-686 Failure of vitamin B6 to reverse the L-dopa effect in patients on a dopa decarboxylase inhibitor HAROLD L. KLAWANS, STEVEN P. RINGEL. AND DAVID M. SHENKER From the Rush-Presbyterian-St. Luke's Medical Center, Chicago, Illinois 60612, USA SUMMARY Seven patients with Parkinsonism previously on L-dopa were placed on a regimen of L-dopa and alpha methyl dopa hydrazine (a dopa decarboxylase inhibitor). Two of these patients had previously shown marked clinical deterioration of the L-dopa improvement when given pyrid- oxine. None of the seven patients receiving alpha methyl dopa hydrazine demonstrated any change in their condition when given pyridoxine. The failure of vitamin B6 to reverse the clinical effect of L-dopa in patients receiving both L-dopa and a peripheral dopa decarboxylase inhibitor suggests that reversal of the L-dopa effect induced by vitamin B6 is due to increasing the activity of the enzyme dopa decarboxylase outside the central nervous system. guest. Protected by copyright. In patients with Parkinsonism receiving L-dopa hydrazine). These observations help to explain the (L-3, 4-dihydroxyphenylalanine), vitamin B6 has paradoxical effects of large amounts of pyridoxine recently been shown to cause a loss or reversal of in patients receiving L-dopa. the L-dopa effect (Duvoisin, Yahr, and Cote, 1969; Yahr, Duvoisin, Schear, Barrett, and Hoehn, METHODS AND RESULTS 1970). This was discovered when Duvoisin et al. (1969) gave vitamin B6 to patients receiving L-dopa Seven patients with Parkinsonism who had been on in an attempt to increase formation of dopamine L-dopa for at least one year were included in this from L-dopa within the central nervous system (CNS) study. -
Osseous Manifestations of Primary Hyperparathyroidism: Imaging Findings
Hindawi International Journal of Endocrinology Volume 2020, Article ID 3146535, 10 pages https://doi.org/10.1155/2020/3146535 Review Article Osseous Manifestations of Primary Hyperparathyroidism: Imaging Findings Jackson Bennett ,1 James W. Suliburk ,2 and Fanny E. Moro´n 3 1School of Medicine, Baylor College of Medicine, Houston, TX, USA 2Department of Surgery, Baylor College of Medicine, Houston, TX, USA 3Department of Radiology, Baylor College of Medicine, Houston, TX, USA Correspondence should be addressed to Fanny E. Mor´on; [email protected] Received 13 September 2019; Revised 10 December 2019; Accepted 8 January 2020; Published 21 February 2020 Academic Editor: Giorgio Borretta Copyright © 2020 Jackson Bennett et al. -is is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Primary hyperparathyroidism is a systemic endocrine disease that has significant effects on bone remodeling through the action of parathyroid hormone on the musculoskeletal system. -ese findings are important as they can aid in distinguishing primary hyperparathyroidism from other forms of metabolic bone diseases and inform physicians regarding disease severity and complications. -is pictorial essay compiles bone-imaging features with the aim of improving the diagnosis of skeletal in- volvement of primary hyperthyroidism. 1. Introduction the symptomatic classical variant in some individuals [2, 4]. Other HPT disease subtypes include secondary and tertiary Hyperparathyroidism (HPT) is an endocrine disorder de- disease, which are primarily seen in patients with chronic fined by a state of inappropriately increased levels of renal disease and posttransplant patients [7]. -
Vitamin a Fact Sheet
Vitamin A Fact Sheet Why does the body need vitamin A? Vitamin A helps: *To maintain vision in dim light *To keep skin smooth and healthy *To help you grow *To help keep your insides healthy (inner linings of the mouth, ears, nose, lungs, urinary and digestive tract) What foods are good sources of vitamin A? Many orange and dark green vegetables and fruits contain carotenes, natural coloring substances, or pigments. The body can change these pigments into vitamin A. The deeper the green or orange color of the vegetable or the fruit, the more carotenes (and thus vitamin A) it contains. Green Vegetables - broccoli, asparagus, spinach, kale, chard, collards and beet, mustard, turnip or dandelion greens. Orange Fruits and Vegetables - carrots, winter squash, sweet potatoes, tomatoes, pumpkin, apricots, cantaloupes, nectarines, peaches, papaya and mangoes. Watch out! - Color is not always a way to recognize foods rich in vitamin A. Oranges, lemons, grapefruits or tangerines are orange or yellow in color but do not contain much carotene. Also, yams, in contrast to sweet potatoes, have no vitamin A value. Is vitamin A stored in my body? Yes, Vitamin A is stored in the liver, so a rich source of vitamin A does not have to be included in the diet every day. However, vitamin A foods included in the diet every day help to build the body reserve. This may be needed in the case of illness or any time when vitamin A is lacking in the diet. How much vitamin A do I need every day? Recommended intake based on the Dietary Reference Intakes (DRI) for Vitamin -
Folate and Folic Acid on the Nutrition and Supplement Facts Labels
Folate and Folic Acid on the Nutrition and Supplement Facts Labels What is folate? Folate is a B vitamin that helps your body make healthy new cells. What foods provide folate? Folate is naturally present in many foods, including vegetables (especially asparagus, brussels sprouts, and dark green leafy vegetables such as spinach and mustard greens), fruits and fruit juices (especially oranges and orange juice), beef liver, nuts (such as walnuts), and beans and peas (such as kidney beans and black-eyed peas). Asparagus Brussels Dark leafy Oranges and sprouts greens orange juice Beef Nuts (such as Beans and peas (such liver walnuts) as kidney beans and black-eyed peas) The New What’s in it for you? June 2020 — 1 What foods provide folate? (Continued) You also get folate by eating foods fortified with folic acid. Folic acid is a form of folate that can be added to foods during the manufacturing process. Foods that are fortified with folic acid include: enriched breads, flours, pastas, rice, and cornmeal; fortified corn masa flour (used to make corn tortillas and tamales, for example); and certain fortified breakfast cereals. Folic acid is also found in certain dietary supplements. Enriched Enriched Enriched Enriched Enriched Fortified corn Fortified breads flours pastas rice cornmeal masa flour breakfast cereals How much folate do I need? The amount of folate you need depends on your age, but most adults can rely on the Daily Value (DV) to find out how much folate to consume. The Daily Values (DV) are reference amounts (in grams, milligrams, or micrograms) of nutrients to consume or not to exceed each day. -
Nutritional Value of Spirulina and Its Use in the Preparation of Some Complementary Baby Food Formulas
Available online at http://journal-of-agroalimentary.ro Journal of Agroalimentary Processes and Journal of Agroalimentary Processes and Technologies Technologies 2014, 20(4), 330-350 Nutritional value of spirulina and its use in the preparation of some complementary baby food formulas Ashraf M. Sharoba Food Sci. Dept., Fac. of Agric., Moshtohor, Benha Univ., Egypt Received: 26 September 2014; Accepted:03 Octomber 2014 .____________________________________________________________________________________ Abstract In this study use the spirulina which is one of the blue-green algae rich in protein 62.84% and contains a high proportion of essential amino acids (38.46% of the protein) and a source of naturally rich in vitamins especially vitamin B complex such as vitamin B12 (175 µg / 10 g) and folic acid (9.92 mg / 100 g), which helps the growth and nutrition of the child brain, also rich in calcium and iron it containing (922.28 and 273.2 mg / 100 g, respectively) to protect against osteoporosis and blood diseases as well as a high percentage of natural fibers. So, the spirulina is useful and necessary for the growth of infants and very suitable for children, especially in the growth phase, the elderly and the visually appetite. It also, helps a lot in cases of general weakness, anemia and chronic constipation. Spirulina contain an selenium element (0.0393 mg/100 g) and many of the phytopigments such as chlorophyll and phycocyanin (1.56% and 14.647%), and those seen as a powerful antioxidant. Finally, spirulina called the ideal food for mankind and the World Health Organization considered its "super food" and the best food for the future because of its nutritional value is very high.