Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0024523 (malabsorption)
 7,319 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Microcytic anemia is defined as the presence of small, often hypochromic, red blood cells in a peripheral blood smear and is usually characterized by a low MCV (less than 83 micron 3). Iron deficiency is the most common cause of microcytic anemia. The absence of iron stores in the bone marrow remains the most definitive test for differentiating iron deficiency from the other microcytic states, ie, anemia of chronic disease, thalassemia, and sideroblastic anemia. However, measurement of serum ferritin, iron concentration, transferrin saturation and iron-binding capacity, and, more recently, serum transferrin receptors may obviate proceeding to bone marrow evaluation. The human body maintains iron homeostasis by recycling the majority of its stores. Disruptions in this balance are commonly seen during menstruation, pregnancy, and gastrointestinal bleeding. Although the iron-absorptive capacity is able to increase upon feedback regarding total body iron stores or erythropoietic activity, this physiologic response is minimal. Significant iron loss requires replacement with iron supplements. The vast majority of patients respond effectively to inexpensive and usually well-tolerated oral iron preparations. In the rare circumstances of malabsorption, losses exceeding maximal oral replacement, or true intolerance, parenteral iron dextran is effective. In either form of treatment, it is necessary to replete iron stores in addition to correcting the anemia.
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PMID:Microcytic anemia. Differential diagnosis and management of iron deficiency anemia. 157 56

We present 4 cases of common variable immunodeficiency with main digestive clinical manifestations. In all four cases chronic diarrhea with intestinal malabsorption predominated, as well as the presence lymphoid nodular hyperplasia; in one case Giardia infestation could be identified; one patient also presented chronic pancreatitis, or recurrent aphthous stomatitis and active chronic hepatitis; sideroblastic anemia could be observed in another patient. All patients had favorable evolution during follow-up which lasted at least 14 months in substitutive treatment with immunoglobulins. One of our patients presented an elevated number of suppressor T lymphocytes, with inversion of the T helper/T suppressor ratio which improved with cimetidine treatment.
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PMID:[Digestive manifestations of common variable immunodeficiency]. 178 May 14