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Juvenile autoimmune polyendocrinopathy.

Juvenile autoimmune polyendocrinopathies are characterized by the coexistence of hypoparathyroidism, chronic candidiasis and adrenal insufficiency. This is in contrast with associated autoimmune endocrine diseases in the adult. Gonadal insufficiency is frequently encountered as well. Some other diseases can also be associated to these endocrinopathies: alopecia, diarrhea, malabsorption or chronic active hepatitis. The pathophysiological aspects of this syndrome are discussed.

Addison Disease

[The pathological characteristics of the thyroid in autoimmune polyendocrinopathies].

After examination of 18 patients with autoimmune polyendocrinopathies the authors have arrived at a conclusion that thyroid pathology is the most frequent sign of autoimmune polyendocrinopathies and is noted earlier than other endocrine disorders. A course of thyropathies is characterized by resistance to conservative therapy and recurrences after surgical interventions. A high hereditary aggravation of patients with autoimmune polyendocrinopathies requires careful investigation of their relatives for early detection of endocrine pathology.

Adolescent

Organ-specific cardiac antibodies: serological markers for systemic hypertension in autoimmune polyendocrinopathy.

Circulating organ-specific autoantibodies are serological markers of destruction or impairment of the relevant endocrine tissue cells and may be associated with abnormal hormone levels with or without clinical evidence of overt disease. We sought organ-specific cardiac antibodies in patients with autoimmune polyendocrinopathy because of increasing evidence that the heart has endocrine characteristics (secretion of atrial natriuretic peptide [ANP] and other peptide hormones). Serum samples from 166 patients with polyendocrinopathy, 80 with autoimmunity confined to one gland, and 200 healthy blood donors were tested for these antibodies by means of immunofluorescence on human heart. Skeletal muscle was used to identify cross-reacting antibodies. Organ-specific cardiac antibodies were detected in significantly more of the patients with autoimmune polyendocrinopathy (28 [17%]) than of those with autoimmunity confined to one gland (1 [1%]) or of normal subjects (7 [3.5%]; p = 0.0001). Among the patients with autoimmune polyendocrinopathy, the prevalence of systemic hypertension was higher in those with cardiac autoantibodies than in those without (5/28 [18%] vs 2/80 [3%]; p = 0.01); the same was true for a family history of hypertension (11 [42%] vs 5 [7%]; p = 0.0001). There were no significant differences in mean basal or stimulated ANP concentrations between patients with or without antibodies or between patients and controls. 5 of the 22 antibody-positive patients had ANP concentrations outside the normal range, but these disturbances were not associated with systemic hypertension or a family history of the disorder. Patients with autoimmune polyendocrinopathy can have organ-specific cardiac antibodies, which may represent novel serological markers for an autoimmune form of systemic hypertension in the absence of overt cardiac disease.

Adult

T-cell large granular lymphocytic leukemia and pure red cell aplasia in a patient with type I autoimmune polyendocrinopathy: response to immunosuppressive therapy.

Clonal proliferations of large granular lymphocytes (LGLs) of T-cell origin characterize T-cell LGL leukemia. This disorder has been described in association with rheumatoid arthritis and other autoimmune phenomena. The presence of endocrinologic abnormalities in patients with T-cell LGL leukemia has not been previously reported, nor has T-cell LGL leukemia been described in patients with endocrinologic abnormalities. Herein we describe a young woman with type I autoimmune polyendocrinopathy, in whom pure red cell aplasia developed in association with clonal proliferation of LGLs. Immunosuppressive therapy with cyclophosphamide resulted in remission of pure red cell aplasia, transient improvement in hypocalcemia, and disappearance of the LGL clone. Clonal proliferation of LGLs may be associated with autoimmune endocrinopathies. Clinicians who are responsible for the care of such patients should be aware of this possible association.

Adult

Autoimmune polyendocrinopathy--candidosis--ectodermal dystrophy (APECED): autosomal recessive inheritance.

A genetic analysis was made of 58 patients and their 42 families with APECED (autoimmune polyendocrinopathy--candidosis--ectodermal dystrophy). APECED is characterized by hypoparathyroidism, primary adrenocortical failure and chronic mucocutaneous candidosis, but none of its components is constant. Other endocrine deficiencies can occur as well and also dystrophy of dental enamel and nails. The proportion of affected siblings was 0.147 +/- 0.034 (S.D.) when corrected for truncate single ascertainment, 0.246 +/- 0.019 when corrected for a priori truncate complete ascertainment and 0.240 +/- 0.047 when corrected for a posteriori truncate complete ascertainment. The male/female ratio was 1.04. The results are compatible with autosomal recessive transmission. No heterozygous manifestations of the gene were found. The gene is enriched in isolated subpopulations in central and eastern Finland. APECED is part of the "Finnish heritage of disease".

Adrenal Insufficiency

[Autoimmune polyendocrinopathy with IGA deficiency].

Case report of a 35-year-old female patient who was admitted in Addisonian crisis and in whom primary adrenal, ovarian and thyroid failure was detected. Antibodies against the adrenals and the thyroid were found, together with dinished serum IgA levels. The patient had been treated for 20 years with diphenylhydantoin, a drug known to induce immunological disturbances, e.g. depression of serum IgA levels. The IgA deficiency and pluriglandular failure may be due to prolonged therapy with diphenylhydantoin. The coincidence of IgA deficiency and autoimmune diseases is well known. As far as is known this is the first case of IgA deficiency associated with autoimmune polyendocrinopathy.

Addison Disease

[Autoimmune polyendocrinopathy and chronic mucocutaneous candidiasis].

A chronic mucocutaneous infection due to yeasts to the Candida genus can be part of the autoimmune polyglandular syndrome, described as APECS, APECED, SPA type I, CES. The authors describe the case of a young patient affected by mucocutaneous candidiasis, hypoparathyroidism and adrenal insufficiency. Chronic mucocutaneous candidiasis was diagnosed first in early childhood and was followed by the development of hypoparathyroidism (4 yrs) and adrenal insufficiency (5 yrs). The initial lesion of this syndrome is still unknown as the reason of the marked susceptibility to mucocutaneous candidiasis without systemic candidiasis. The treatment of mucocutaneous candidiasis has been improved by the introduction of orally active antifungal drugs as Ketoconazole, first, and fluconazole now.

Addison Disease

[Autoimmune polyendocrinopathy and chronic mucocutaneous candidiasis].

The authors report the case of a child who, at the age of 18 months showed signs of hypoparathyroidism together with gastrointestinal, then buccal, then ungual candidiasis. Acute adrenal failure occurred when he was 5 1/2 years' old. At the age of 10, the patient developed alopecia areata and interstitial keratitis. Immunological investigations yielded normal results, except that serum was weakly positive for anti-adrenal antibodies at 1/10th. The mucosal and ungual candidiasis infection was cured by ketoconazole, and the various endocrine abnormalities were corrected with the appropriate replacement therapies. This case prompted the authors to review the candidiasis/"polyglandular autoimmune disease" association. Whitaker's triad consists of candidiasis, hypoparathyroidism and chronic renal failure, 2 or these 3 elements being sufficient to make the diagnosis. Numerous other associations have been described; they are presented here in table form in descending order of frequency, with candidiasis/hypoparathyroidism coming on top of the list (70 p. 100). The fairly constant chronological order in which these different pathologies appear is one of the peculiarities of the syndrome: candidiasis often precedes hypoparathyroidism and adrenal insufficiency. Alopecia areata does not seem to be frequent, but its true incidence is difficult to quantify since lesions of the scalp and/or skin appendages are poorly documented in the literature. Alopecia and keratopathy seem to be of autoimmune origin. Mucocutaneous candidiasis too is specific, the mucosae and nails being constantly involved. This type of candidiasis does not exist in other forms of hypoparathyroidism. Chronic mucocutaneous candidiasis is found in many different diseases and is due to immunodeficiency against Candida spp.(ABSTRACT TRUNCATED AT 250 WORDS)

Autoimmune Diseases

[Autoimmune polyendocrinopathies. Pathogenic hypotheses].

In most of the cases, once a given endocrine gland is involved, the corresponding specific autoantibody may be detected; for example, anti-islet cell antibodies are produced within the first few years, after onset of symptoms in insulin-dependent diabetes (DID). Accompanying autoantibodies are quite frequently found in the patient himself. In Schmidt's syndrome (thyroid and adrenal glands are involved and associated to IDD in 30% of the cases) thyroid microsomal antibodies are found in 38% of the cases, thyroglobulin antibodies in 11% of the cases, islet-cell antibodies in 7% of the cases and steroid cell antibodies in 17% of the cases. Associations are also possible in patient family members. Aberrant expression of HLA-DR molecules at the membrane of follicular thyroid cells (as of any other endocrine gland), following a viral aggression, could well account for the endocrinopathy combinations, but alternative mechanisms should be discussed.

Antibody Specificity