Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Explain the Magnesium Deficiency and Toxicity?
Deficiency of magnesium is rare for two reasons: frstly, the mineral is widely distributed in the foods, secondly, kidney is able to adjust re-absorption of filtered magnesium to body needs. However, Mg depletion occurs in 'various conditions, which either inlpair its intestinal absorption or increase its urinary excretion. Studies have shown that a decline in urinary magnesium excretion during protein- energy malnutrition (PEM) is accompanied by a reduced intestinal absorption of magnesium. The catch-up growth associated with recovery from PEM is achieved only if magnesium supply is increased substantially. Most of the early pathological consequences of depletion are neurologic or neuromuscular defects, some of which probably reflect the influence of magnesium on potassium flux within tissues. Thus, a decline in magnesium status produces anorexia, nausea, muscular weakness, lethargy, staggering and if deficiency is prolonged, weight loss. Progressively increasing with the severity and duration of depletion are manifestations of hyperirritability, hyperexcitability, muscular spasms, and tetany, leading ultimately to convulsions.
An increased susceptibility to audiogenic shock is common in experimental animals. Cardiac arrhythmia and pulmonary oedema frequently have fatal consequences. It has been suggested that a suboptimal magnesium status may be a factor in the etiology of coronary heart disease and hypertension but additional evidence is needed. Hypomagnesernia associated with deficiency represents a plasma Mg levels of less than 1.5 mg/dl. It leads to impaismeilt in Ca and K homeostatsis. Hypocalcernia and hypokalemia have been observed in both experimentally produced and disease-related Mg deficiency. These disturbances are partially caused by hypomagnesemia induced changes in the production and function of PTH. Reduced serum Mg initially stimulates parathyroid gland to produce more PTH, but as deficiency becomes more severe, the sensitivity of parathyroid gland to slow serum Ca concentration is impaired and level of PTH .is low in relation to degree of hypocalcernia. Decreased Mg status has been suggested as a factor contributing to the pathogenesis of several chronic diseases. Both dysrhythmias and myocardial ischemia have been attributed to low Mg intakes. Hypomagnesemia in diabetes may be one of the risk factors in the development of diabetic retinopathy.
Aiscommoncellismwhatsk question #Minimum 100 words accepted#
Implant success 1) An individual, unattached implant is immobile when tested clinically. 2) A radiograph that does not demonstrate any evidence of perimplant radiolucency.
Which of the following best defines why the two DNA polymerase proteins that are held by the sliding clamp are oriented in opposite directions? A. The efficiency of replication
Autogenic and Allogenic Succession In many cases the living beings of an ecosystem, modify their environment considerably by their growth, death and decay. The changed condit
What is the typical biological function of the connective tissues? How is this function associated to the main features of its cells? The typical function of the connective tis
Syphilis and HIV Most clinicians treat HIV-infected patients with syphilis and normal CSF with standard penicillin doses for the stage of syphilis, but some patients may need
Define Functions of Manganese? Like other micro minerals, Mn also functions in mammalian enzyme systems. It can function both as an integral part of metalloenzymes and as an en
Purple (P) flowers are dominant and white (p) flowers are recessive. A homozygous dominant purple flower is crossed with a homozygous recessive white flower. what percentage of the
Q. What is the kind of circulatory system present in annelids? In beings of the phylum Annelida the circulatory system is closed that is blood circulation takes place only with
Q. Explain Restricted fragment polymorphism? This method makes use of a group of enzymes termed restriction enzymes which recognise particular sequence of DNA and act as "molec
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd