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Dermatitis Herpetiformis or Duhring’s Disease

KONICA MINOLTA DIGITAL CAMERAWhat Is Obesity?

[dropcap]O besity is an inflammatory metabolic disorder that is characterized by body mass index greater than 30% resulting from excessive body fat stored in adipose tissue.

Q: What is body fat?

A: Body fat is part of the body that functions as a reserve of stored energy. It is composed of fat cells, called adipocytes, having thin membranes between these cells. Adipocytes expand to store fat and shrink as fat is released as needed into the bloodstream for other body cells to use for metabolizing energy.

Each adipocyte contains a drop of triglyceride which is a type of lipid (fat). Triglycerides are a normal component in the bloodstream and, as such, are transported wherever needed as a form of energy. Excess triglycerides are the form of fat that is stored.

Initially, fat that is eaten in the diet is changed by digestive enzymes into the triglyceride form which is a molecule composed of three fatty acids and glycerol. Triglycerides are then absorbed through the small intestinal wall to be delivered to the liver. Of note, the liver can make triglycerides from excess protein and carbohydrates eaten in a meal, especially sugar and alcohol. The liver on the other hand makes cholesterol from triglycerides.

Triglyceride levels in the blood generally increase as weight increases. It is thought that an elevated blood triglyceride level hampers the body’s ability to feel full or satisfied with food that is eaten. Elevated triglyceride levels also increase the risk of clot formation because they cause the blood to become thicker. A normal triglyceride blood level is 150 mg/dL.

The causes of obesity are complex and varied. Those related to gluten sensitivity are discussed below.

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

Muscle Wasting 

Multiple Gastric Ulcerations. Courtesy Dr. Krum.
Multiple Gastric Ulcerations. Courtesy Dr. Krum.

What Are Multiple Gastric Ulcerations?

[dropcap]M ultiple gastric ulcerations denote a stomach disorder that involves damage to the superficial mucosa characterized by many sores of the stomach antrum that are marked by inflammation, necrosis (death of the affected cells) and sloughing of destroyed tissue.

Q: Where is the stomach antrum?

A: The antrum is the lower region of the stomach before the pylorus which is nearest the duodenum (first part of the small intestine). The stomach and duodenum are separated by the powerful pyloric sphincter.

The stomach antrum propels food in the stomach against the pylorus which resists passage of food until it is turned into chyme. Chyme is highly acidic liquified food that has been thoroughly mixed with stomach juices.

Gastric ulcerations are typically associated with widespread gastritis (inflammation), inflammatory involvement of acid producing cells, and atrophy of acid and pepsin producing cells.1

The primary causes of gastric ulcerations are H. pylori infection, use of Aspirin and non-steroidal drugs (NSAIDS), and stress.1

What Are Multiple Gastric Ulcerations 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. [↩] [↩]

Helicobacter Pylori Infection (H. Pylori)

What Is Helicobacter Pylori (H. Pylori) Infection? [dropcap]H[/dropcap]elicobacter pylori infection is a potentially deadly stomach disease characterized by chronic superficial inflammation and ulcerations in 100% of infected patients. This infection disrupts normal defense and repair… 

Cardiomyopathy, Idiopathic Dilated

Heart showing dilated cardiomyopathy at autopsy. Courtesy
Enlarged heart showing dilated cardiomyopathy at autopsy. 

What Is Idiopathic Dilated Cardiomyopathy?

[dropcap]I[/dropcap]diopathic dilated cardiomyopathy (IDCM) is a disorder of myocardial (heart muscle) function characterized by dilation or enlargement of the cardiac chambers and reduction in the ability of the ventricles (lower chambers) to contract with the required force needed to pump blood out of the heart to the body.

Idiopathic means the cause is not known.

Q: What is the prognosis for idiopathic dilated cardiomyopathy?

A: This disorder often results in symptomatic heart failure due to the inability of the heart to pump blood as required to supply the body with oxygen and meet metabolic needs.

What Is Idiopathic Dilated Cardiomyopathy In Celiac Disease and/or Gluten Sensitivity?

Stroke in Childhood 

Lymph System. National Cancer Institute.What Are Extraintestinal Lymphomas?

[dropcap]E xtraintestinal lymphomas (non-Hodgkin’s) are malignancies that arise in peripheral lymphatic tissue outside the intestinal tract from B-cell and T-cell lymphocytes.

Q: What is peripheral lymphatic tissue?

A: Peripheral lymphatic tissue includes lymph vessels, lymph, lymph nodes, and lymphocytes.

Lymph vessels branch into all the tissues of the body, carrying lymph, a clear fluid that contains white blood cells, especially B-cell and T-cell lymphocytes.

Lymph vessels are connected to lymph nodes which are small, round masses of tissue that store white blood cells. They also trap and remove bacteria or other harmful substances that may be in the lymph. Groups of lymph nodes are found in the neck, underarms, chest, abdomen, and groin.

Ninety percent (90%) of extraintestinal lymphomas are B-cell type and ten percent (10%) are T-cell type. In this malignancy, lymph nodes are replaced by cancer cells. Some are more aggressive than others.

In 2010, there were an estimated 509,065 people living with non-Hodgkin lymphoma in the United States according to the National Cancer Institute.

What Are Extraintestinal Lymphomas In Celiac Disease and/or Gluten Sensitivity?

Gastric (Stomach) Ulcer

Photo by gastroscopy showing ulcer in the antrum area of the stomach.
Photo by gastroscopy showing ulcer in the antrum area of the stomach (lower area).

What Is A Gastric Ulcer?

[dropcap]G[/dropcap]astric ulcer is a painful stomach disorder characterized by an open sore involving the mucosa lining and deeper muscle layer of the stomach.

Gastric ulcer is associated with lymphocytic gastritis which is inflammation of the mucosal lining of the stomach. The thick mucosal lining normally protects the stomach from the erosive action of stomach acid.

Q: How do ulcers develop?

A: Ulcers develop if  hydrochloric acid secreted by the gastric glands of the stomach for the purpose of digesting food damages the normally resistant mucosal walls of the stomach. In the reverse, ulcers may be accompanied by achlorhydria (insufficient acid production).

Damage occurs when there is a predisposing factor that alters the health of the mucosal lining. The most common cause is infection with a bacteria called h. pylori bacter, stress and chronic use of the pain relievers aspirin and non-steroidal drugs like ibuprofen.

Smoking tocacco and consuming alcohol aggravate an ulcer but do not cause it to develop.

The most common location for ulcer formation is along the stomach antrum which is the area of the stomach before the pylorus, the lower region that empties liquid stomach contents into the small intestine.

What Is A Gastric Ulcer In Celiac Disease and/or Gluten Sensitivity?

Gastritis, Lymphocytic

IMG_1007a stomach body normalWhat Is Lymphocytic Gastritis?

[dropcap]L[/dropcap]ymphocytic gastritis is an inflammatory stomach disorder that is characterized by superficial inflammation of the stomach lining (mucosa) that mainly involves the gastric antrum in children.

Lymphocytic gastritis is defined by the recognition of more than 25 intraepithelial lymphocytes (IEL) per 100 surface epithelial cells lining the stomach wall.

Q: What are intraepithelial lymphocytes?

A: Intraepithelial lymphocytes in lymphocytic gastritis are a unique T-cell population  of white blood cells that are interspersed between epithelial cells in the mucosa.

What Is Lymphocytic Gastritis In Celiac Disease and/or Gluten Sensitivity?

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. [↩]

Tuberculosis – Increased Susceptibility 

What Is Irritable Bowel Syndrome? [dropcap]I rritable bowel syndrome (IBS) is a motility disorder without anatomic cause involving the entire gastrointestinal tract that is characterized by these four features: 1) Abdominal pain usually relieved by… 

Osteoporosis

Woman with long standing osteoporosis. Courtesy of Wikimedia.
Woman with long standing osteoporosis. Courtesy of Wikimedia.

What Is Osteoporosis?

[dropcap]O[/dropcap]steoporosis is a metabolic bone disorder characterized by diminished bone mass (density) with normal cell appearance but fragile bone strength that prediposes to broken bones, and with high bone turnover.

This condition usually goes undetected until late when loss of height or a bone fracture occurs. In fact, each year  1.5 million fractures mainly of the hip, spine and wrist are attributed to osteoporosis. Compression fractures of vertebrae bones are the most common, accounting for 700,000 cases.

Bone is composed of specialized connective tissue called osseous tissue. Osseous tissue is made up of living bone cells (osteocytes) that are embedded in a hard matrix (framework) of calcified substance.

Bone matrix contains collagen fibers and the minerals calcium phosphate and calcium carbonate, which provide strength to bone. The copper enzyme, lysyl oxidase, is involved in the cross-linking of collagen in forming the framework for depositing calcium and other minerals to build and repair bone.

Q: How do osteocytes function in bone?

A: Osteocytes maintain the health of bone by their metabolic activity in regulating normal bone turnover. Bone turnover is the breaking down and removal of old or damaged bone and rebuilding or remodeling of healthy bone that is ongoing throughout life. The bone formation process takes about 3 months to complete.

Osteoporosis develops from failure of the body to maintain health and to provide bone tissue with adequate nutrition for proper function. Risk factors that can be modified include: low calcium intake, sedentary lifestyle, smoking, drinking alcohol excessively, eating a diet with excessive caffeine, protein, and phosphate, and taking certain medications over a long time such as steroids, thyroid preparations, the anti-convulsive drug phenytoin, aspirin, antacids, anticoagulants, some diuretics, and some chemotherapeutic drugs. See below for a fuller description.

In addition to celiac disease, osteoporosis is associated with advancing age, family history, nulliparity (no pregnancies) and post-menopause in females, certain disorders such as hyperthyroidism, hypogonadism, inflammatory bowel disease like Crohn’s disease, multiple myeloma, anorexia nervosa, and Cushing’s disease.

Bone strength is easily measured by testing bone mineral density (BMD). BMD is evaluated by DEXA scan (dual-energy X-ray absorptiometry).  DEXA at the femoral neck and lumbar spine is considered the gold standard to confirm the diagnosis of osteoporosis.  Results are expressed as T and Z scores. T scores compare the result with a 20 to 40 year old helathy person while  Z scores compare the result with persons in the same age group. Both are measured in standard deviations (SD).

According to WHO criteria (World Health Organization), a T-score of -1 SD or greater denotes normal bone, a T-score between −1 to −2.5 SD denotes osteopenia, and a T-score of −2.5 or more denotes osteoporosis.1

Treatment is aimed to preserve and increase bone density, minimize symptoms for better quality of life and reduce risk of bone fractures.

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

The cumulative effects of gluten-induced inflammation, treatment delay, and malabsorption result in lower bone density and bone fragility.2

Sources:
  1. Pantaleoni S, Luchino M, Adriani A, Pellicano R, Stradella D, Ribaldone DG, Sapone N, Isaia GC, Di Stefano M, Astegiano M. Bone mineral density at diagnosis of celiac disease and after 1 year of gluten-free diet. ScientificWorldJournal. 2014;2014:173082. doi: 10.1155/2014/173082. [↩]
  2. Grace-Farfaglia P. Bones of Contention: Bone Mineral Density Recovery in Celiac Disease-A Systematic Review. Nutrients. 2015 May 7;7(5):3347-3369. [↩]