Skip to content

Anemia, Iron Deficiency

Red Blood Cell Comparison. Courtesy medindia.com
Red Blood Cell Comparison. Courtesy medindia.com

What Is Iron Deficiency Anemia?

[dropcap]I[/dropcap]ron deficiency anemia is a blood cell disorder that is characterized by formation of small, pale red blood cells, causing tissue hypoxia. Hypoxia is the inability to meet the demands of the body for oxygen.

Q: Why do small, pale red blood cells cause tissue hypoxia?

A: Small, pale red blood cells (erythrocytes) cause tissue hypoxia because they are not able, as do normal erythrocytes, to pick up adequate oxygen from the lungs and carry it to cells that use oxygen.

Red blood cell production and function are dependent on a sufficient level of iron in the body and also the ability to use available iron to make hemoglobin in red blood cells.

Hemoglobin is a protein that binds oxygen in red blood cells to be carried by the bloodstream to cells throughout the body. In iron deficiency anemia,  hemoglobin in females is below 12.5g/dl (normal range is 12.5 to 16g/dl) and in males it is below 13.5g/dl (normal range is 13.5 to 17.5g/dl).

Iron must be obtained from the diet, since the body cannot make it, but there are various factors that can interfere with absorption and use in the body, causing anemia. Iron absorption from the gut first requires ionization, or gaining a positive electrical charge, in the strongly acidic environment of stomach juice. Ionized iron, only, can be absorbed in the duodenum, which receives the acidic contents of the stomach before it is neutralized further along.

Dietary iron can be heme or non-heme depending on the food source. Heme iron obtained only from animal food sources is absorbed into the bloodstream by active transport across the brush border (microvilli) which cover the multitudinous villi of the small intestinal lining.

Non-heme iron obtained from plants must bind with apoprotein after entering the enterocyte (surface cell of small intestinal lining) to be ferried to the underlying basolateral membrane and exited by active transport into the bloodstream.

Frequently, chronic anemia due to iron deficiency is accompanied by increased platelets, and this thrombocytosis resolves with iron repletion (normal iron level). Conversely, in severe iron deficiency anemia, patients may have thrombocytopenia (low platelets), which also resolves with iron therapy.1

What Is Iron Deficiency Anemia In Celiac Disease and/or Gluten Sensitivity?

Sources:
  1. Koury M and Rhodes M. How to approach chronic anemia. Hematology Am Soc Hematol Educ Program. 2012;2012:183-90. doi: 10.1182/asheducation-2012.1.183. [↩]

Vitamin B1 (Thiamin) Deficiency

thiamin deficiency What Is Thiamin?

[dropcap]T[/dropcap]hiamin, also called vitamin B1, is an essential vitamin that is required to convert foodstuffs into energy and for the health and proper functioning of the nervous, muscular and cardiovascular systems.

In the bloodstream, 90% of active thiamin (TPP) is carried by red blood cells while 10% is transported in the bloodstream as free thiamin and thiamin monophosphate bound mostly to the protein albumin.

In the diet, animal food sources provide active thiamin while plant food sources provide free thiamin.1

Urinary excretion of thiamin cannot be detected when vitamin intake is below the required levels. On the other hand, when intake exceeds saturation in the body, thiamin and/or its metabolites are actively excreted into urine to prevent excessive toxicity of the vitamins.2

In patients who have thiamin deficiency, the most common conditions that bring them to a clinician include neuropathies, depression, myalgia, cardiomyopathies or takes diuretics and/or eat a high carbohydrate diet.3

What Is Thiamin Deficiency In Celiac Disease and/or Gluten Sensitivity?

Sources:
  1. Kathleen Mahan and Sylvia Escott-Stump, ed. Krause’s Food, Nutrition & Diet Therapy, 10th Edition. Philadelphia, PA. USA: W.B. Saunders Company, 2000. [↩]
  2. Shibata K, Hirose J, Fukuwatari T. Relationship Between Urinary Concentrations of Nine Water-soluble Vitamins and their Vitamin Intakes in Japanese Adult Males. Nutr Metab Insights. 2014 Aug 5;7:61-75. doi: 10.4137/NMI.S17245. [↩]
  3. Spectracell Labs, Inc. [↩]

Hypomagnesemia (Low Blood Level of Magnesium)

hypomagnesemiaWhat Is Hypomagnesemia?

[dropcap]H[/dropcap]ypomagnesemia means the level of magnesium in the bloodstream is too low to meet metabolic needs of the body for this mineral.

Q: What are the metabolic needs of the body for magnesium?

A: The metabolic needs of the body for magnesium are numerous which gives rise to very many distressing symptoms when this mineral is deficient.

A major function of magnesium is to stabilize the structure of an enzyme called adenosine triphosphate (ATP) within cells for the production of energy. In the brain, magnesium plays important roles in all the major metabolisms such as oxidation-reduction and regulation of ions (charged minerals).1

What Is Hypomagnesemia In Celiac Disease and/or Gluten Sensitivity?

Sources:
  1. Bourre JM. Effects of nutrients (in food) on the structure and function of the nervous system: update on dietary requirements for brain. Part 1: micronutrients. J Nutr Health Aging. 2006 Sep-Oct;10(5):377-85. [↩]

Potassium Deficiency

Luscious Figs For Potassium.
Luscious Figs For Potassium.

What Is Potassium?

[dropcap]P[/dropcap]otassium is a mineral that is crucial for life being essential for every cell, especially nerve and muscle function.

Most potassium is intracellular, meaning it is found within cells while sodium, its opposing mineral (both electrolytes), is found in the fluid surrounding cells.

In muscle contraction, exchange of potassium and sodium takes place so that potassium moves out of muscle cells and sodium moves into them.

With muscle relaxation, potassium moves back into the cells and sodium moves out. Functions are described below.

Importantly, a recent study investigating the association between the metabolic syndrome and potassium intake in the general population found a significant inverse association between potassium intake and metabolic syndrome in adults. That is, the lower the potassium intake, the greater the odds of developing metabolic syndrome. After adjusting for various lifestyle and dietary confounders, subjects in the highest quartile of potassium intake had 39% lower odds for metabolic syndrome compared to those in the lowest quartile. This association was consistent for both sexes. Among the components of metabolic syndrome, potassium intake was inversely related to abdominal obesity and fasting hyperglycemia in multivariate analysis.1

What Is Potassium Deficiency In Celiac Disease and/or Gluten Sensitivity?

Sources:
  1. Shin D, Joh HK, Kim KH, Park SM. Benefits of potassium intake on metabolic syndrome: The fourth Korean National Health and Nutrition Examination Survey (KNHANES IV). Atherosclerosis. 2013 Sep;230(1):80-5. doi: 10.1016/j.atherosclerosis.2013.06.025. [↩]

Vitamin B6 (Pyridoxine) Deficiency

Lots of Pyridoxine In This Pie...Chicken, Cheese,Spinach, Tomato
Lots of Pyridoxine In This Pie…Chicken, Cheese,Spinach, Tomato

What Is Vitamin B6 (Pyridoxine)?

[dropcap]P[/dropcap]yridoxine is an essential vitamin that is required for the health of nerves, bones, blood, arteries, blood sugar, the immune system and metabolism of proteins.

Two important functions of pyridoxine involve coenzymes that are involved in regulating the metabolism of proteins like methionine and tryptophan and their intermediate amino acid building blocks.

In total, the coenzymic form of vitamin B-6, pyridoxal phosphate (PLP), serves as a coenzyme for over 140 enzymes in human metabolism.1  Functions are more fully described below.

Magnesium is required for pyridoxine to actually attach to enzymes dependent on it.

Because pyridoxine is excreted from the body by the kidneys, urinary excretion of it cannot be detected when vitamin intake is below the required levels. On the other hand, when intake exceeds saturation in the body, the vitamin and/or its metabolites are actively excreted into urine to prevent excessive toxicity of the vitamins.2

Smoking blocks use of pyridoxine.

What Is Pyridoxine Deficiency In Celiac Disease and/or Gluten Sensitivity?

Sources:
  1. Gregory JF 3rd1, Park Y, Lamers Y, Bandyopadhyay N, Chi YY, Lee K, Kim S, da Silva V, Hove N, Ranka S, Kahveci T, Muller KE, Stevens RD, Newgard CB, Stacpoole PW, Jones DP. Metabolomic analysis reveals extended metabolic consequences of marginal vitamin B-6 deficiency in healthy human subjects. PLoS One. 2013 Jun 11;8(6):e63544. doi: 10.1371/journal.pone.0063544. [↩]
  2. Shibata K, Hirose J, Fukuwatari T. Relationship Between Urinary Concentrations of Nine Water-soluble Vitamins and their Vitamin Intakes in Japanese Adult Males. Nutr Metab Insights. 2014 Aug 5;7:61-75. doi: 10.4137/NMI.S17245. [↩]

Primary Hyperparathyroidism

What Is Primary Hyperparathyroidism?

Tissue changes in hyperparathyroidism. Courtesy Quizlet.com
Tissue Changes in Hyperparathyroidism Causing Brown Tumor. Courtesy Quizlet.com

[dropcap]P[/dropcap]rimary hyperparathyroidism is a parathyroid disorder characterized by excessive secretion of parathyroid hormone by one or more parathyroid glands for more than 6 months.

In primary hyperparathyroidism, blood calcium levels are high while phosphorus levels are decreased due to the action of parathyroid hormone.

Parathyroid hormone is produced by the four pea sized parathyroid glands that are located on the thyroid gland in the front of the neck. Partly because the thyroid and parathyroid glands share the same anatomic place in the body and partly because they have similar names, they are often confused although they have completely different actions.

Parathyroid hormone normally keeps calcium and the opposing mineral phosphorus levels in balance by drawing calcium as needed from bones to increase it in blood and releasing excess phosphorus through the kidneys to decrease blood levels.

Primary hyperparathyroidism is commonly caused by an adenoma (tumor) in a parathyroid gland (80%) or 15% due to hyperplasia of gland tissue (overgrowth). It is seldom associated with autoimmune disorders. However, cancer is a  possibility.

Q: What is a parathyroid adenoma?

A: A parathyroid adenoma is usually a solitary, well circumscribed, soft, tan reddish-brown nodule with a capsule. Gland tissues outside of the adenoma are normal or slightly shrunken (not needed anymore).1

Untreated, primary hyperparathyroidism results in cyst formations in bone marrow (osteitis fibrosa cystica) and brown tumors in bone tissue. Cysts contain large amounts of fibrous tissue with areas of hemorrhage. Brown tumors contain aggregates of osteoclasts (bone cells), hemorrhage and giant cells resembling neoplasms.2

Here is the symptomatolgy: “Painful Bones, Renal Stones, Abdominal Groans, and Mental Moans.”

What Is Primary Hyperparathyroidism In Celiac Disease and/or Gluten Sensitivity?

Sources:
  1. http://quizlet.com/32428692/pathology-of-parathyroid-and-bone-flash-cards [↩]
  2. http://quizlet.com/32428692/pathology-of-parathyroid-and-bone-flash-cards/ [↩]

Brain Blood Flow Abnormalities 

blood perfusion gluten celiac diseaseWhat Are Brain Blood Flow Abnormalities?

[dropcap]B[/dropcap]rain blood flow abnormalities, or cerebral perfusion abnormalities, such as spasm of blood vessels causing inadequate blood flow to the brain, are characterized by impaired brain function and thinking.

Q: What is cerebral perfusion?

A: Cerebral perfusion is the flow of blood in the brain. Blood supply to the brain comes from 4 major vessels: 2 carotid arteries and 2 vertebral arteries.

Cerebral perfusion abnormalities can be diagnosed using perfusion computed tomography (CT). CT scan is a technique that allows rapid qualitative and quantitative evaluation of cerebral perfusion by generating maps of cerebral blood flow (CBF), cerebral blood volume (CBV), and mean transit time (MTT). The technique is based on the central volume principle (CBF = CBV/MTT) and requires the use of commercially available software employing complex deconvolution algorithms to produce the perfusion maps.

Perfusion CT has been found to be useful for noninvasive diagnosis of cerebral ischemia (diminished blood flow) and infarction (no blood flow) and for evaluation of vasospasm (intermittent blood flow through vessels).1

What Are Brain Blood Flow Abnormalities In Celiac Disease and/or Gluten Sensitivity?

Sources:
  1. Hoeffner E, Case I, Jain R, et al. Cerebral Perfusion CT: Technique and Clinical Applications. June 2004 Radiology, 231, 632-644. [↩]

Cachexia

Cachexia with Wasted Muscles, Weakness, and That Developed over 3 Years Time.
Cachexia with Wasted Muscles, Weakness, Weight Loss, Anemia, Skin Hemorrhages, Anorexia. GFW

What Is Cachexia?

[dropcap]C[/dropcap]achexia is a state of ill health involving deteriorating body composition that is characterized by general malnutrition and loss of lean tissue such as muscle.

Q: What are typical findings in cachexia?

A: Arm muscle triceps (the muscles at the back of the upper arm), skin folds, subscapular skin folds, fat area index, and bone mineral content are significantly lower than normal.

Cachexia may develop in protein-losing enteropathy such as celiac disease, chronic or severe infection such as pneumonia, tuberculosis, malaria, or many chronic diseases such as heart failure and cancer.

Cachexia can develop in persons of any age.

What Is Cachexia In Celiac Disease and/or Gluten Sensitivity?

Diarrhea, Acute

Infant with Acute Diarrhea and Swollen Belly - Hallmarks of Celiac Disease.
Malnourished Infant With Acute Diarrhea and Swollen Belly.

What Is Acute Diarrhea?

[dropcap]A[/dropcap]cute diarrhea is a small intestinal motility disorder characterized by excessively rapid movement of intestinal contents through the small intestine with excessive loss of fluid and electrolytes that leads rapidly to a life threatening hypokalemia (low potassium blood level) and acidosis.

Q: What is hypokalemia?

A: Hypokalemia is characterized by dehydration that may result in vascular collapse, muscular malfunction that may result in paralytic ileus (bowels do not move), paralysis (cannot stand), and respiratory hypoventilation (shallow breathing) or failure, metabolic acidosis resulting from diarrhea, and impaired nerve conduction.1

While diarrhea may be a common symptom of small bowel mucosal disease, the consequent malabsorption can lead to substantial malnutrition and nutrient deficiencies. The small intestine, unlike the colon, has been relatively inaccessible, and systematic evaluation is often necessary to identify and treat small intestinal mucosal diseases that lead to diarrhea. All patients with severe diarrhea or diarrhea associated with features suggestive of malabsorption may have a disease of the small intestinal mucosa that requires careful evaluation and targeted management.2

What Is Acute Diarrhea In Celiac Disease and/or Gluten Sensitivity?

Sources:
  1. Kathleen Mahan and Sylvia Escott-Stump, ed. Krause’s Food, Nutrition & Diet Therapy, 10th Edition. Philadelphia, PA. USA: W.B. Saunders Company, 2000. [↩]
  2. Murray JA1, Rubio-Tapia A. Diarrhoea due to small bowel diseases. Best Pract Res Clin Gastroenterol. 2012 Oct;26(5):581-600. doi: 10.1016/j.bpg.2012.11.013. [↩]