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Low Stomach Acid Production

low-stomach-acid1What Is Low Stomach Acid Production?

Low stomach acid production is a common disorder in celiac disease and dermatitis herpetiformis that is characterized by lack of sufficient hydrochloric acid needed 1) to properly digest food, which results in malnutrition and subsequent nutritional deficiencies, and 2) to destroy swallowed bacteria and other microbes, which may allow infections to develop.

It is also common in the general population, as well, affecting 50% of people age 60 years and about 80% by age 85 years.  Nevertheless, low stomach acid is not generally looked for as a cause of acute and chronic disorders that rob health with far-reaching effects.

Understanding Stomach Acid Production and Function

The stomach digests incoming food into a liquid state, thereby releasing nutrients so they can be absorbed by the small intestine. Powerful stomach muscles churn food and mix it with gastric juice, dissolving and breaking it down.

Gastric juice is produced by gastric glands located in the stomach lining. These numerous, microscopic glands produce about 3 liters of juice a day. Gastric juice is composed of a high concentration of

Helicobacter Pylori Infection (H. Pylori)

What Is Helicobacter Pylori (H. Pylori) Infection? Helicobacter 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… 

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?

Gastric 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?

Lymphocytic 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?

Iron Deficiency

ferritinWhat Is Iron?

Iron is an essential mineral that is required for normal body function.

Almost two-thirds of iron in the body is found in hemoglobin, the protein in red blood cells that carries oxygen to tissues. Smaller amounts of iron are found in myoglobin, a protein that helps supply oxygen to muscle, and in enzymes that assist biochemical reactions.

Iron is also found in proteins that store iron for future needs and that transport iron in blood.

Q: How are iron stores regulated?

A:Iron stores are regulated by intestinal iron absorption.1That is, whenever iron is needed, more iron is absorbed than when iron is sufficient. This mechanism prevents excess iron in the body which is harmful.

In the brain, iron is necessary to ensure oxygenation and to produce energy in the cerebral parenchyma (via cytochrome oxid. ase), and for the synthesis of neurotransmitters and myelin.

Iron concentrations in the umbilical artery are critical during the development of the fetus, and in relation with the IQ in the child.2

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

Sources:
  1. http://ods.od.nih.gov/factsheets/Iron-HealthProfessional accessed 12/11/12 [↩]
  2. 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. [↩]

Vomiting

VomitingWhat Is Vomiting?

Vomiting is the regurgitation of swallowed food back out of the mouth.

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

Gastroparesis – Delayed Gastric Emptying

Reproduction of a lithograph plate showing inside of the stomach from Gray's Anatomy. Courtesy Wikipedia Commons.
Reproduction of a lithograph plate showing inside of the stomach from Gray’s Anatomy. Courtesy Wikipedia Commons.

What Is Delayed Gastric Emptying?

Delayed gastric emptying is a stomach motility or movement disorder characterized by abnormally slow movement of gastric contents from the stomach through the pyloric sphincter into the duodenum, causing dyspepsia.

Q: What determines how fast the stomach empties?

A: How fast the stomach empties depends on the pressure of strong coordinated muscle contractions in the top region of the stomach propelling chyme against resistance at the pylorus (base region of the stomach).

Chyme is food that has been dissolved and thoroughly mixed with stomach secretions.

In the digestion of carbohydrate, protein and fat, protein leaves the stomach first (1 hour), then carbohydrates (1 1/2 to 2 hours), and fat takes longest to digest (2-4 hours). Plain water is able to pass through the pylorus within 5 minutes.

What Is Delayed Gastric Emptying In Celiac Disease and/or Gluten Sensitivity?

Multiple Gastric Ulcerations 

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

What Are Multiple Gastric Ulcerations?

Multiple 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. [↩] [↩]

Gastritis, Collagenous

Microscopic View of Gastric Biopsy Showing a Collagen Band Under the Surface Mucosal Cells. Courtesy Gastrolab.com
Microscopic View of Gastric Biopsy Showing a Collagen Band Stained Pink Under the Surface Mucosal Cells. Courtesy Gastrolab.com

What Is Collagenous Gastritis?

Collagenous gastritis is a rarely reported stomach disorder characterized by the deposition of a subepithelial collagen band and accompanying inflammatory infiltrate in the stomach wall.

A subepithelial collagen band means that collagen, a tough fibrous protein, has abnormally accumulated under the surface layer of epithelial cells which form the mucosa lining the stomach.

The surface mucosa may remain intact and not show lymphocytosis and/or gastritis on endoscopic examination or it may become stripped off and bleed from entrapped capillaries. Biopsy is necessary to diagnose collagenous gastritis.1

Q: Why does collagen become deposited under the surface lining of the stomach?

A: It is thought that collagen deposition is preceded by inflammation and tissue damage. However, the natural history and pathogenesis of collagenous gastritis remain unclear.2

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

Sources:
  1. Jain R, Chetty R. Collagenous gastritis. Int J Surg Pathol. 2010 Dec;18(6):534-6. doi: 10.1177/1066896908329588. Epub 2008 Dec 22. [↩]
  2. Leung ST, Chandan VS, Murray JA, Wu TT. Collagenous gastritis: histopathologic features and association with other gastrointestinal diseases. Am J Surg Pathol. 2009 May;33(5):788-98. doi: 10.1097/PAS.0b013e318196a67f. [↩]