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1.
J Clin Immunol ; 44(6): 140, 2024 Jun 03.
Artículo en Inglés | MEDLINE | ID: mdl-38829425

RESUMEN

Autoimmune polyendocrine syndrome type 1 (APS-1) is a rare monogenic disease caused by mutations in the autoimmune regulator gene. Although the disease-associated autoantibodies mostly target endocrine organs, autoantibodies from patients with APS-1 bind also to rat brain structures. The patients often have GAD65-antibodies, that can cause autoimmune encephalitis. However, neurological manifestations of APS-1 have not been systematically explored. We conducted a retrospective chart review on 44 Finnish patients with APS-1 (median age 38 years, 61% females) and collected all their neurological diagnoses. To assess the prevalence of serum antineuronal antibodies in APS-1, serum samples of 24 patients (median age 36 years, 63% females) were analyzed using a fixed cell-based assay. Of the 44 APS-1 patients, 10 (23%) had also received a diagnosis of a neurological disease. Of these neurological comorbidities, migraine (n = 7; 16%), central nervous system infections (n = 3; 7%), and epilepsy (n = 2; 5%) were the most prevalent. Other diagnoses recorded for single patients were axonal sensorimotor polyneuropathy, essential tremor, idiopathic intracranial hypertension, ischemic stroke, and trigeminal neuralgia. Serum antineuronal antibodies were detected in 42% of patients tested (10/24, 50% females, median age 42 years), GAD65 antibodies being the most common finding. Antibodies against glycine and aquaporin 4 were found in low titers. In four patients, relatively high titers of GAD65 antibodies without coexisting type 1 diabetes were found, but none presented with GAD65-encephalitis. Our study suggests an association between APS-1 and neurological disorders, the mechanisms of which are to be further investigated.


Asunto(s)
Autoanticuerpos , Poliendocrinopatías Autoinmunes , Humanos , Poliendocrinopatías Autoinmunes/inmunología , Poliendocrinopatías Autoinmunes/epidemiología , Poliendocrinopatías Autoinmunes/sangre , Femenino , Masculino , Adulto , Autoanticuerpos/sangre , Autoanticuerpos/inmunología , Persona de Mediana Edad , Finlandia/epidemiología , Prevalencia , Estudios Retrospectivos , Estudios de Cohortes , Adulto Joven , Enfermedades del Sistema Nervioso/inmunología , Enfermedades del Sistema Nervioso/epidemiología , Enfermedades del Sistema Nervioso/etiología , Neuronas/inmunología , Adolescente , Glutamato Descarboxilasa/inmunología , Anciano
2.
J Allergy Clin Immunol ; 148(3): 876-888, 2021 09.
Artículo en Inglés | MEDLINE | ID: mdl-33819509

RESUMEN

BACKGROUND: Gastrointestinal dysfunction is a frequent and disabling manifestation of autoimmune polyendocrine syndrome type 1 (APS-1), a rare monogenic multiorgan autoimmune disease caused by the loss of central AIRE-controlled immune tolerance. OBJECTIVES: This study aimed to understand the role of the gut microbiome in APS-1 symptoms and potentially alleviate common gastrointestinal symptoms by probiotic intervention. METHODS: This study characterized the fecal microbiomes of 28 patients with APS-1 and searched for associations with gastrointestinal symptoms, circulating anti-cytokine autoantibodies, and tryptophan-related metabolites. Additionally, daily doses of the probiotic Lactobacillus rhamnosus GG were administered for 3 months. RESULTS: Of 581 metagenomic operational taxonomic units (mOTUs) characterized in total, 14 were significantly associated with patients with APS-1 compared with healthy controls, with 6 mOTUs depleted and 8 enriched in patients with APS-1. Four overabundant mOTUs were significantly associated with severity of constipation. Phylogenetically conserved microbial associations with autoantibodies against cytokines were observed. After the 3-month intervention with the probiotic L rhamnosus GG, a subset of gastrointestinal symptoms were alleviated. L rhamnosus GG abundance was increased postintervention and corresponded with decreased abundances of Alistipes onderdonkii and Collinsella aerofaciens, 2 species positively associated with severity of diarrhea in patients with APS-1. CONCLUSIONS: The APS-1 microbiome correlates with several APS-1 symptoms, some of which are alleviated after a 3-month L rhamnosus GG intervention. Autoantibodies against cytokines appear to shape the gut microbiome by positively correlating with a taxonomically consistent group of bacteria.


Asunto(s)
Autoanticuerpos/inmunología , Citocinas/inmunología , Microbioma Gastrointestinal , Lacticaseibacillus rhamnosus , Poliendocrinopatías Autoinmunes/inmunología , Poliendocrinopatías Autoinmunes/microbiología , Probióticos/uso terapéutico , Actinobacteria/genética , Actinobacteria/aislamiento & purificación , Adolescente , Adulto , Anciano , Autoanticuerpos/sangre , Bacteroidetes/genética , Bacteroidetes/aislamiento & purificación , Niño , Preescolar , Femenino , Humanos , Masculino , Persona de Mediana Edad , Mutación , Poliendocrinopatías Autoinmunes/sangre , Poliendocrinopatías Autoinmunes/genética , Factores de Transcripción/genética , Adulto Joven , Proteína AIRE
3.
Clin Endocrinol (Oxf) ; 94(3): 377-383, 2021 03.
Artículo en Inglés | MEDLINE | ID: mdl-32955743

RESUMEN

CONTEXT: The monogenic disorder autoimmune polyendocrine syndrome type 1 (APS-1) or autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy (APECED) manifests frequently with hypoparathyroidism, which requires treatment with oral supplementation with calcium and active vitamin D analogs. The majority of APS-1/APECED patients also suffer from intestinal malabsorption, which complicates the management of hypoparathyroidism and may lead to refractory severe hypocalcaemia. In such situations, reliance on intravenous calcium carries a high risk of nephrocalcinosis and renal damage. METHODS: Here, we report our experience of periprocedural subcutaneous administration of recombinant human parathyroid hormone (rhPTH 1-34) in APS-1/APECED patients. Serum calcium was measured up to five times within the 36-hour period starting the evening before the scheduled procedure and ending the morning following the procedure. RESULTS: Twenty-seven APS-1/APECED patients with hypoparathyroidism (aged 4-67 years) underwent 31 invasive gastrointestinal and/or pulmonary procedures. The patients received an average rhPTH1-34 dose of 9.6 ± 1.4 µg by subcutaneous injection. 92% of the adults and 54% of children in our cohort had evidence of nephrocalcinosis. Mean calcium levels remained stable and ranged from 2.06 to 2.17 mmol/L with minimal fluctuation. None of our patients experienced periprocedural adverse events connected with hypocalcaemia. CONCLUSION: rhPTH 1-34 is an alternative to conventional therapy in patients with APS-1/APECED and hypoparathyroidism undergoing invasive procedures. Subcutaneous PTH1-34 given directly before and after procedures resulted in well-controlled serum calcium levels maintained in the low-normal range and avoided the need for intravenous calcium which may contribute to renal calcifications and tubular damage.


Asunto(s)
Hipocalcemia , Hipoparatiroidismo , Hormona Paratiroidea , Poliendocrinopatías Autoinmunes , Adulto , Calcio/sangre , Niño , Humanos , Hipocalcemia/tratamiento farmacológico , Hipoparatiroidismo/tratamiento farmacológico , Hormona Paratiroidea/administración & dosificación , Poliendocrinopatías Autoinmunes/sangre , Poliendocrinopatías Autoinmunes/tratamiento farmacológico
4.
Int J Mol Sci ; 22(11)2021 May 23.
Artículo en Inglés | MEDLINE | ID: mdl-34071130

RESUMEN

The diagnosis of autoimmune polyglandular syndrome (APS) types 1/2 is difficult due to their rarity and nonspecific clinical manifestations. APS-1 development can be identified with assays for autoantibodies against cytokines, and APS-2 development with organ-specific antibodies. In this study, a microarray-based multiplex assay was proposed for simultaneous detection of both organ-specific (anti-21-OH, anti-GAD-65, anti-IA2, anti-ICA, anti-TG, and anti-TPO) and APS-1-specific (anti-IFN-ω, anti-IFN-α-2a, and anti-IL-22) autoantibodies. Herein, 206 serum samples from adult patients with APS-1, APS-2, isolated autoimmune endocrine pathologies or non-autoimmune endocrine pathologies and from healthy donors were analyzed. The prevalence of autoantibodies differed among the groups of healthy donors and patients with non-, mono- and multi-endocrine diseases. APS-1 patients were characterized by the presence of at least two specific autoantibodies (specificity 99.5%, sensitivity 100%). Furthermore, in 16 of the 18 patients, the APS-1 assay revealed triple positivity for autoantibodies against IFN-ω, IFN-α-2a and IL-22 (specificity 100%, sensitivity 88.9%). No anti-cytokine autoantibodies were found in the group of patients with non-APS-1 polyendocrine autoimmunity. The accuracy of the microarray-based assay compared to ELISA for organ-specific autoantibodies was 88.8-97.6%. This multiplex assay can be part of the strategy for diagnosing and predicting the development of APS.


Asunto(s)
Autoanticuerpos/sangre , Poliendocrinopatías Autoinmunes/inmunología , Adolescente , Adulto , Autoantígenos/inmunología , Enfermedades del Sistema Endocrino/sangre , Enfermedades del Sistema Endocrino/inmunología , Femenino , Humanos , Proteínas Inmovilizadas/inmunología , Interferón Tipo I/inmunología , Interferón alfa-2/inmunología , Interleucinas/inmunología , Masculino , Análisis por Micromatrices/métodos , Persona de Mediana Edad , Especificidad de Órganos , Poliendocrinopatías Autoinmunes/sangre , Poliendocrinopatías Autoinmunes/diagnóstico , Sensibilidad y Especificidad , Adulto Joven , Interleucina-22
5.
Endocr Regul ; 54(2): 126-132, 2020 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-32597157

RESUMEN

OBJECTIVES: The purpose of the present paper is to propose and introduce novel biomarkers of autoimmune polyendocrine syndromes that are relevant to the early diagnosis and optimal medical management of the patients who already suffer from type 1 diabetes mellitus. METHODS: We hypothesize and demonstrate on a case study that various organ-specific autoimmune endocrinopathies can result in lowered basal insulin requirements, leading to unexplained hypoglycemia. RESULTS: It can be hypothesized that hypothyroidism in patients with type 1 diabetes mellitus may deteriorate glycemic control and can lead to an increased rate of hypoglycemia, particularly the overnight and morning hypoglycemia. Thus, the decreased requirements for particularly overnight basal insulin can be an early marker of the autoimmune polyendocrine syndrome-3 with subclinical autoimmune thyroiditis in immune-mediated type 1 diabetes mellitus. Further, it could be proposed that unexplained hypoglycemia during the late afternoon or evening could be an early marker of the autoimmune polyendocrine syndrome-2 with subclinical autoimmune Addison disease in immune-mediated type 1 diabetes mellitus. As a result, an altered circadian pattern of basal insulin requirements can occur, characterized by a decreased late afternoon basal insulin rate. CONCLUSIONS: After exclusion of other causes, the unexplained reoccurring hypoglycemia can be a remarkable feature of autoimmune polyendocrine syndromes in immune-mediated type 1 diabetes mellitus on intensive insulin replacement therapy.


Asunto(s)
Enfermedad de Addison/sangre , Ritmo Circadiano/fisiología , Diabetes Mellitus Tipo 1/sangre , Hipoglucemia/sangre , Hipotiroidismo/sangre , Insulina/sangre , Poliendocrinopatías Autoinmunes/sangre , Poliendocrinopatías Autoinmunes/diagnóstico , Adulto , Biomarcadores/sangre , Femenino , Humanos
6.
J Endocrinol Invest ; 41(1): 91-98, 2018 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-28819917

RESUMEN

BACKGROUND: In recent years, scientific knowledge pertaining to the rare ORPHAN polyglandular autoimmune syndrome (registered code ORPHA 282196) has accumulated. OBJECTIVE: To offer current demographic, clinical, serological and immunogenic data on PAS. METHODS: Review of the pertinent and current literature. RESULTS: Polyglandular autoimmune syndromes (PAS) are multifactorial diseases with at least two coexisting autoimmune-mediated endocrinopathies. PAS show a great heterogeneity of syndromes and manifest sequentially with a large time interval between the occurrence of the first and second glandular autoimmune disease. PAS cluster with several non-endocrine autoimmune diseases. In most endocrinopathies of PAS, the autoimmune process causes an irreversible loss of function, while chronic autoimmune aggressions can simultaneously modify physiological processes in the affected tissue and lead to altered organ function. The rare juvenile PAS type I is inherited in a monogenetic manner, whereas several susceptibility gene polymorphisms have been reported for the more prevalent adult types. Relevant for a timely diagnosis at an early stage is the screening for polyglandular autoimmunity in patients with monoglandular autoimmune disease and/or first degree relatives of patients with PAS. The most prevalent adult PAS type is the combination of type 1 diabetes with autoimmune thyroid disease. CONCLUSIONS: Early detection of specific autoantibodies and latent organ-specific dysfunction is advocated to alert physicians to take appropriate action in order to prevent full-blown PAS disease.


Asunto(s)
Poliendocrinopatías Autoinmunes/diagnóstico , Adulto , Progresión de la Enfermedad , Humanos , Poliendocrinopatías Autoinmunes/sangre , Poliendocrinopatías Autoinmunes/inmunología
7.
Endocr J ; 65(4): 493-498, 2018 Apr 26.
Artículo en Inglés | MEDLINE | ID: mdl-29459556

RESUMEN

We describe a very rare case of concurrent variant type 3 autoimmune polyglandular syndrome (APS) and pulmonary arterial hypertension (PAH). A previously healthy 65-year-old Japanese woman was referred to our university hospital with a 2-month history of general fatigue and hyperglycemia. Laboratory tests revealed severe hyperglycemia (plasma glucose 543 mg/dL and HbA1c 10.7%) with ketonuria (3+). Glutamic acid decarboxylase (GAD) and IA-2 antibodies were positive, and the serum C peptide level was markedly decreased to 0.2 ng/mL. Accordingly, type 1 diabetes was diagnosed. Hashimoto's thyroiditis was also diagnosed because she had a diffuse goiter and a mild hypothyroidism (TSH 8.20 µU/mL, and FT4 0.80 ng/mL) with positive autoantibodies for thyroid peroxidase and thyroglobulin. There was neither adrenal insufficiency nor hypocalcemia. In addition, chest X ray showed a suspicious PAH by a dilation of both pulmonary arteries, especially right descending artery, and right heart catheterization confirmed the presence of PAH. HLA Class II genotyping revealed DRB1-DQB1*0901-*0303, a common susceptibility haplotype in Japanese patients with type 3 APS or acute-onset type 1 diabetes. The combination of variant type 3 APS and PAH is extremely rare and to the best of knowledge, this is the first case reported in a Japanese patient.


Asunto(s)
Glucemia/metabolismo , Cadenas beta de HLA-DQ/genética , Hipertensión Pulmonar/complicaciones , Poliendocrinopatías Autoinmunes/complicaciones , Anciano , Alelos , Femenino , Predisposición Genética a la Enfermedad , Haplotipos , Humanos , Hipertensión Pulmonar/sangre , Hipertensión Pulmonar/genética , Japón , Poliendocrinopatías Autoinmunes/sangre , Poliendocrinopatías Autoinmunes/genética
9.
Clin Chem Lab Med ; 55(7): 1003-1012, 2017 Jun 27.
Artículo en Inglés | MEDLINE | ID: mdl-28099118

RESUMEN

BACKGROUND: Measurements of autoantibodies to interferon-ω (IFN-ω) in patients with autoimmune polyglandular syndrome type 1 (APS-1) were performed using a new immunoprecipitation assay (IPA) based on 125I-labeled IFN-ω. METHODS: We have developed and validated a new IPA based on 125I-labeled IFN-ω. Sera from 78 patients (aged 3-78 years) with clinically diagnosed APS-1, 35 first degree relatives, 323 patients with other adrenal or non-adrenal autoimmune diseases and 84 healthy blood donors were used in the study. In addition, clinical features and autoimmune regulator (AIRE) genotype for the APS-1 patients were analyzed. RESULTS: Sixty-six (84.6%) of 78 APS-1 patients were positive for IFN-ω Ab using 125I-labeled IFN-ω IPA. IFN-ω Ab was the most prevalent of the six different autoantibodies tested in this group of APS-1 patients. All 66 IFN-ω Ab-positive APS-1 patients had AIRE mutations and 7 IFN-ω Ab-negative patients had no detectable AIRE mutations, whereas 3 (3.8%) patients were discrepant for IFN-ω Ab positivity and AIRE mutation results. Out of autoimmune controls studied, two patients were positive for IFN-ω Ab. Positivity and levels of IFN-ω Ab in the APS-1 patients studied were similar irrespective of patient's clinical phenotype and AIRE genotype. Furthermore, IFN-ω Ab levels did not change over time (up to 36 years of disease duration) in 8 APS-1 patients studied. CONCLUSIONS: We have developed a novel, highly sensitive and specific assay for measurement of IFN-ω Ab. It provides a simple and convenient method for the assessment of patients with APS-1 and selecting patients suspected of having APS-1 for AIRE gene analysis.


Asunto(s)
Autoanticuerpos/sangre , Autoanticuerpos/inmunología , Inmunoprecipitación/métodos , Interferón Tipo I/inmunología , Poliendocrinopatías Autoinmunes/sangre , Poliendocrinopatías Autoinmunes/inmunología , Adolescente , Adulto , Anciano , Autoanticuerpos/aislamiento & purificación , Niño , Preescolar , Femenino , Genotipo , Humanos , Masculino , Persona de Mediana Edad , Mutación , Poliendocrinopatías Autoinmunes/genética , Factores de Transcripción/genética , Adulto Joven , Proteína AIRE
10.
BMC Dermatol ; 17(1): 7, 2017 05 18.
Artículo en Inglés | MEDLINE | ID: mdl-28521835

RESUMEN

BACKGROUND: Acrodermatitis enteropathica (AE) is a rare dermatitis secondary to zinc deficiency most commonly seen as an inherited disease in infants. In the last decade, increased number of reports have been published on the acquired form that presents in adulthood. Unlike its inherited counterpart, acquired AE (AAE) is often secondary to underlying pathologic or iatrogenic etiologies that interfere with nutritional absorption, such as inflammatory bowel disease or alcoholism. Various gastrointestinal pathologies have been associated with AAE, but there is currently no report on its association with adult autoimmune enteropathy (AIE), a rare gastrointestinal disorder commonly seen in infants, with limited cases reported in adults. Here we present a case in which AAE was the initial clinical manifestation in an adult patient subsequently diagnosed with AIE. CASE PRESENTATION: A 41-year-old African American female presented to our emergency department at the Johns Hopkins Hospital with several months of progressively worsening dermatitis in the legs and acral regions, along with worsening symptoms of diarrhea, alopecia, poor oral intake, lethargy, hematochezia, peripheral edema, and weight loss. Our dermatology team was consulted given a presentation of exquisitely tender, erythematous, and diffusely desquamating skin lesions in the setting of two prior outside hospitalizations in the last 3 months with the same dermatitis that was refractory to topical and oral corticosteroids. Low serum zinc level and positive response to zinc supplementation confirmed the diagnosis of AAE. However, persistent hypovitaminosis and mineral deficiency despite aggressive nutritional supplementation prompted further investigation for an underlying malabsorption etiology. Jejunal biopsy and associated autoantibodies confirmed a diagnosis of adult AIE. CONCLUSION: This case highlights the fact that adult AIE can present initially with clinical findings of AE. While proper zinc supplementation can resolve the latter, recognizing this association can trigger earlier diagnosis, minimize unnecessary tests, and establish earlier intervention to improve quality of life and prevent recurrence of AAE. The case also highlights the importance of collaboration between general and subspecialist physicians in identifying a primary etiology to a secondary clinical presentation. This report can be beneficial to general internists and emergency physicians, as much as it can be to dermatologists, rheumatologists, and gastroenterologists.


Asunto(s)
Acrodermatitis/etiología , Poliendocrinopatías Autoinmunes/diagnóstico , Zinc/deficiencia , Adulto , Negro o Afroamericano , Análisis Químico de la Sangre , Femenino , Humanos , Poliendocrinopatías Autoinmunes/sangre , Poliendocrinopatías Autoinmunes/complicaciones
11.
Neuro Endocrinol Lett ; 37(8): 540-542, 2017 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-28326749

RESUMEN

A 26-year-old Japanese woman presented with adrenal insufficiency, and treatment was started with cortisone and fludrocortisone in 1975. A few years later, she presented with hypoparathyroidism and was diagnosed with autoimmune polyendocrine syndrome type I (APS I), and treatment with calcium and alfacalcidol was started. She was found to have subacute thyroiditis and relative adrenal failure in 2006. Her condition remained stable under treatment with cortisone, fludrocortisone, levothyroxine, calcium lactate, precipitated calcium carbonate and alfacalcidol. While antibodies against pancreatic glutamic acid decarboxylase (GAD) were strongly positive (7,690 U/ml), fasting glucose level was 4.9 mmol/L and HbA1c was 6.3% on admission. As GAD antibody showed a high-titer of >10,000 U/ml and fasting plasma glucose level showed a rising trend, we performed 75-g oral glucose tolerance test (OGTT) 6 years after discharge. Whereas OGTT in 2012 showed impaired glucose tolerance, glucose tolerance had reverted to normal in 2014. A patient with a high-titer GAD antibody does not always have progressive glucose intolerance. GAD antibody positivity is common in not only type 1 diabetes, but also APS I and stiff-person syndrome (SPS). There are differences in recognized epitopes among the three disorders. Epitopes for GAD65 antibody associated with type 1 diabetes are located in the middle region and the COOH-terminal of the GAD65 protein, whereas epitopes associated with SPS reside in the NH2-terminal in addition to the middle region and COOH-terminal. The present case suggests that these differences in epitopes may be related to various pathogenic mechanisms including glucose intolerance.


Asunto(s)
Autoanticuerpos/sangre , Glutamato Descarboxilasa/sangre , Poliendocrinopatías Autoinmunes/inmunología , Adulto , Glucemia/análisis , Epítopos/inmunología , Femenino , Prueba de Tolerancia a la Glucosa , Humanos , Poliendocrinopatías Autoinmunes/sangre , Poliendocrinopatías Autoinmunes/diagnóstico , Síndrome de la Persona Rígida/sangre , Síndrome de la Persona Rígida/diagnóstico
14.
BMC Gastroenterol ; 15: 62, 2015 May 23.
Artículo en Inglés | MEDLINE | ID: mdl-26001889

RESUMEN

BACKGROUND: Although sarcoidosis and celiac disease are both chronic immunologic disorders involving multiple organ systems, reports about association of diseases in individual patients are sparse. While sarcoidosis is a chronic granulomatous disease presumably reflecting an exaggerated response to an unknown antigen, celiac disease is a T cell-driven disease triggered by ingestion of gluten, a protein composite found in wheat and related grains. CASE PRESENTATION: We present three cases with a longstanding history of sarcoidosis that have been additionally diagnosed with celiac-like enteropathy. In two cases, celiac disease was established applying celiac-specific serology and duodenal histology, while one case was revealed as an AIE-75-positive autoimmune enteropathy. The HLA-DR3/DQ2 haplotype was confirmed in both celiac patients, hence confirming previous data of linkage disequilibrium as a cause for disease association. Remarkably, one celiac patient presented with granulomatous nodulae in the ileum, thus reflecting an intestinal sarcoid manifestation. In contrast the patient with an autoimmune enteropathy, was HLA-DQ9/DQ6-positive, also arguing against CD. CONCLUSIONS: Associations of sarcoidosis and celiac disease are rare but do occur. Determining the HLA status in patients with complex autoimmune associations might help classifying involved disease entities.


Asunto(s)
Enfermedad Celíaca/diagnóstico , Enfermedades Pulmonares/complicaciones , Poliendocrinopatías Autoinmunes/diagnóstico , Sarcoidosis/complicaciones , Adulto , Biomarcadores/sangre , Enfermedad Celíaca/sangre , Enfermedad Celíaca/complicaciones , Enfermedad Celíaca/inmunología , Diagnóstico Diferencial , Femenino , Antígenos HLA-DQ/sangre , Haplotipos , Humanos , Enfermedades Pulmonares/sangre , Enfermedades Pulmonares/diagnóstico , Enfermedades Pulmonares/inmunología , Persona de Mediana Edad , Poliendocrinopatías Autoinmunes/sangre , Poliendocrinopatías Autoinmunes/complicaciones , Poliendocrinopatías Autoinmunes/inmunología , Sarcoidosis/sangre , Sarcoidosis/diagnóstico , Sarcoidosis/inmunología
15.
J Endocrinol Invest ; 38(6): 629-33, 2015 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-25576459

RESUMEN

PURPOSE: To evaluate the Vitamin D status of patients with a single autoimmune disease and of patients with several autoimmune diseases. METHODS: We enrolled 35 patients with isolated type 1 diabetes mellitus (T1DM), 60 with autoimmune polyendocrine syndromes (APS) including T1DM and 72 control subjects. Among patients with APS, 10 were classified as type 2 (Addison's disease + T1DM), whereas the other 50 as type 3 (autoimmune thyroid disease + T1DM + other autoimmune diseases). Vitamin D (25-OHD) levels were assessed by a chemiluminescent immunoassay in all patients and controls on samples drawn in the morning of the same months. RESULTS: Both groups of APS and T1DM patients showed 25-OHD levels significantly lower than healthy controls (p < 0.001 for both vs controls), without any significant difference between the two groups (p = 0.80). The highest prevalence of vitamin D deficiency (values <20 ng/ml) was observed in APS type 3 subgroup (8 out of 50 patients, 16%). CONCLUSIONS: Patients with APS present reduced vitamin D circulating levels, but the vitamin D status is not different between patients with single or multiple autoimmune diseases. The kind of autoimmune disease, rather than the association of several autoimmune diseases, may influence negatively the levels of vitamin D. Further prospective studies are needed to clarify if impaired vitamin D level is a causal factor in the pathogenesis of autoimmune diseases or a consequence of them.


Asunto(s)
Enfermedad de Addison/sangre , Diabetes Mellitus Tipo 1/sangre , Poliendocrinopatías Autoinmunes/sangre , Tiroiditis Autoinmune/sangre , Deficiencia de Vitamina D/sangre , Vitamina D/sangre , Enfermedad de Addison/complicaciones , Adolescente , Adulto , Niño , Diabetes Mellitus Tipo 1/complicaciones , Femenino , Humanos , Masculino , Poliendocrinopatías Autoinmunes/complicaciones , Tiroiditis Autoinmune/complicaciones , Deficiencia de Vitamina D/complicaciones , Adulto Joven
16.
Clin Immunol ; 153(1): 220-7, 2014 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-24792136

RESUMEN

An important characteristic of autoimmune polyendocrine syndrome type 1 (APS 1) is the existence of neutralizing autoantibodies (nAbs) against the type I interferons (IFN) -α2 and -ω at frequencies close to 100%. Type 1 IFN autoantibodies are detected by antiviral neutralizing assays (AVA), binding assays with radiolabelled antigens (RLBA), enzyme-linked immunosorbent assay (ELISA), or by reporter-based cell assays. We here present a simple and reliable version of the latter utilizing a commercially available cell line (HEK-Blue IFN-α/ß). All 67 APS 1 patients were positive for IFN-ω nAbs, while 90% were positive for IFN-α2 nAbs, a 100% and 96% correlation with RLBA, respectively. All blood donors and non-APS 1 patients were negative. The dilution titer required to reduce the effect of IFN-ω nAbs correlated with the RLBA index. This cell-based autoantibody assay (CBAA) is easy to perform, suitable for high throughput, while providing high specificity and sensitivity.


Asunto(s)
Anticuerpos Neutralizantes/inmunología , Autoanticuerpos/inmunología , Inmunoensayo/métodos , Interferón Tipo I/antagonistas & inhibidores , Interferón Tipo I/inmunología , Poliendocrinopatías Autoinmunes/sangre , Poliendocrinopatías Autoinmunes/inmunología , Anticuerpos Neutralizantes/sangre , Autoanticuerpos/sangre , Línea Celular , Humanos , Sensibilidad y Especificidad
17.
J Immunol ; 187(4): 2023-30, 2011 Aug 15.
Artículo en Inglés | MEDLINE | ID: mdl-21753149

RESUMEN

Autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy (APECED) is a monogenic autoimmune disease that is caused by mutations in the AIRE gene. Murine studies have linked AIRE to thymocyte selection and peripheral deletional tolerance, but the pathogenesis of the human disease remains unclear. In this study, we show that APECED patients have elevated IL-7 levels and a drastically decreased expression of IL-7R on CD8(+) T cells. This is associated with increased proliferation and a decreased expression of the negative TCR regulator CD5 in the CD45RO(-) subset. The CD45RO(-) cells also display oligoclonal expansions, decreased expression of the lymph node homing factors CCR7 and CD62L, and increased expression of perforin, consistent with the accumulation of highly differentiated effector cells. The CD45RO(-)CCR7(+)CD8(+) population of cells with markers characteristic of naive phenotype is also skewed, as shown by decreased expression of CD5 and increased expression of perforin. The putative CD31(+) recent thymic emigrant population is likewise affected. These data are consistent with IL-7 dysregulation inducing a decreased threshold of TCR signaling and self-antigen-driven proliferation, probably in synergy with the failed thymic selection. The resultant loss of CD8(+) T cell homeostasis is likely to play a significant role in the pathogenesis of APECED. Our findings may also hold lessons for other diseases in which the IL-7-IL-7R pathway has emerged as a risk factor.


Asunto(s)
Linfocitos T CD8-positivos/inmunología , Regulación de la Expresión Génica/inmunología , Homeostasis/inmunología , Interleucina-7/inmunología , Poliendocrinopatías Autoinmunes/inmunología , Factores de Transcripción/inmunología , Adulto , Animales , Antígenos de Diferenciación/sangre , Antígenos de Diferenciación/genética , Antígenos de Diferenciación/inmunología , Linfocitos T CD8-positivos/metabolismo , Linfocitos T CD8-positivos/patología , Niño , Preescolar , Femenino , Regulación de la Expresión Génica/genética , Homeostasis/genética , Humanos , Interleucina-7/biosíntesis , Interleucina-7/genética , Masculino , Ratones , Persona de Mediana Edad , Poliendocrinopatías Autoinmunes/sangre , Poliendocrinopatías Autoinmunes/genética , Poliendocrinopatías Autoinmunes/patología , Receptores de Antígenos de Linfocitos T/genética , Receptores de Antígenos de Linfocitos T/inmunología , Receptores de Antígenos de Linfocitos T/metabolismo , Receptores de Interleucina-7/sangre , Receptores de Interleucina-7/genética , Receptores de Interleucina-7/inmunología , Timo/inmunología , Timo/metabolismo , Timo/patología , Factores de Transcripción/genética , Factores de Transcripción/metabolismo , Proteína AIRE
18.
Clin Nephrol ; 80(3): 223-6, 2013 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-22541677

RESUMEN

We present a 42-year-old woman with pre-existing autoimmune polyendocrinopathy syndrome (APS) Type 2 and chronic kidney disease due to Type 1 diabetic nephropathy, who developed a rapid deterioration in renal function due to perinuclear anti-neutrophil cytoplasmic antibody (pANCA)-associated vasculitis. Although possibly a chance occurrence, ANCA have been detected more frequently in patients with a history of certain autoimmune diseases. Such an association may simply reflect an underlying tendency to immune system dysfunction in these patients and the finding of positive ANCA serology does not reliably herald the development of ANCA-associated vasculitis. However, our case illustrates that positive ANCA serology in such circumstances is not always a benign phenomenon and should still be interpreted within the clinical context. Moreover, clinicians managing patients with pre-existing autoimmune disease should maintain a low threshold for appropriate assessment should such patients develop evidence suggestive of vasculitis.


Asunto(s)
Vasculitis Asociada a Anticuerpos Citoplasmáticos Antineutrófilos/inmunología , Anticuerpos Anticitoplasma de Neutrófilos/sangre , Nefropatías Diabéticas/inmunología , Poliendocrinopatías Autoinmunes/inmunología , Adulto , Vasculitis Asociada a Anticuerpos Citoplasmáticos Antineutrófilos/sangre , Vasculitis Asociada a Anticuerpos Citoplasmáticos Antineutrófilos/diagnóstico , Vasculitis Asociada a Anticuerpos Citoplasmáticos Antineutrófilos/terapia , Biomarcadores/sangre , Biopsia , Nefropatías Diabéticas/sangre , Nefropatías Diabéticas/diagnóstico , Nefropatías Diabéticas/terapia , Progresión de la Enfermedad , Femenino , Humanos , Inmunosupresores/uso terapéutico , Riñón/patología , Fallo Renal Crónico/inmunología , Fallo Renal Crónico/terapia , Diálisis Peritoneal , Intercambio Plasmático , Poliendocrinopatías Autoinmunes/sangre , Poliendocrinopatías Autoinmunes/diagnóstico , Poliendocrinopatías Autoinmunes/terapia , Resultado del Tratamiento
19.
Minerva Endocrinol ; 38(3): 329-36, 2013 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-24126553

RESUMEN

In type 3 polyendocrine syndrome (PAS3), autoimmune thyroiditis occurs with other organ-specific autoimmune disease, but not with autoimmune adrenalitis. In this report we described a family from Pakistan in which mother and three daughters were affected by a PAS3. We studied a family from Pakistan: Father MMu age 44, mother KN aged 44, three daughters MM age 20, MH age 16 and MA age 14 and a son MU age 18. These subjects were tested for thyroids function, metabolic function, adrenal function, autoimmune disease. In this family the four females were shown hypothyroidism with presence of anti thyroid autoantibodies (AA) and high TSH serum concentration in association with the presence of anti transglutaminase AA. Moreover KN, MM and MH were positive for anti nuclear AA (granular pattern) and for antibodies against Saccaromyces cerevisiae. MM was positive for AA against nuclear extractable antigens (SSA and SSB) too. No diabetes or pernicious anemia were observed. Adrenal and Pituitary function were normal. PAS 3C is an uncommon disease. In this family from Pakistan we observed a PAS3C in the four female members: mother and three daughters while father and son were unaffected.


Asunto(s)
Poliendocrinopatías Autoinmunes/genética , Adolescente , Adulto , Especificidad de Anticuerpos , Autoanticuerpos/sangre , Autoantígenos/inmunología , Enfermedad Celíaca/genética , Femenino , Antígenos HLA/genética , Hormonas/sangre , Humanos , Masculino , Pakistán , Linaje , Fenotipo , Poliendocrinopatías Autoinmunes/sangre , Poliendocrinopatías Autoinmunes/clasificación , Síndrome de Sjögren/genética , Tiroiditis Autoinmune/genética , Tirotropina/sangre
20.
Front Endocrinol (Lausanne) ; 12: 784195, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34917035

RESUMEN

Objective: In autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy (APECED) defects in the autoimmune regulator gene lead to impaired immunotolerance. We explored the effects of immunodeficiency and endocrinopathies on gynecologic health in patients with APECED. Design: Cross-sectional cohort study combined with longitudinal follow-up data. Methods: We carried out a gynecologic evaluation, pelvic ultrasound, and laboratory and microbiologic assessment in 19 women with APECED. Retrospective data were collected from previous study visits and hospital records. Results: The study subjects' median age was 42.6 years (range, 16.7-65.5). Sixteen patients (84%) had premature ovarian insufficiency, diagnosed at the median age of 16.5 years; 75% of them used currently either combined contraception or hormonal replacement therapy. In 76% of women, the morphology and size of the uterus were determined normal for age, menopausal status, and current hormonal therapy. Fifteen patients (79%) had primary adrenal insufficiency; three of them used dehydroepiandrosterone substitution. All androgen concentrations were under the detection limit in 11 patients (58%). Genital infections were detected in nine patients (47%); most of them were asymptomatic. Gynecologic C. albicans infection was detected in four patients (21%); one of the strains was resistant to azoles. Five patients (26%) had human papillomavirus infection, three of which were high-risk subtypes. Cervical cell atypia was detected in one patient. No correlation between genital infections and anti-cytokine autoantibodies was found. Conclusions: Ovarian and adrenal insufficiencies manifested with very low androgen levels in over half of the patients. Asymptomatic genital infections, but not cervical cell atypia, were common in female patients with APECED.


Asunto(s)
Enfermedades de los Genitales Femeninos/diagnóstico , Enfermedades de los Genitales Femeninos/epidemiología , Poliendocrinopatías Autoinmunes/diagnóstico , Poliendocrinopatías Autoinmunes/epidemiología , Adolescente , Adulto , Anciano , Autoanticuerpos/sangre , Estudios de Cohortes , Estudios Transversales , Enfermedades del Sistema Endocrino/sangre , Enfermedades del Sistema Endocrino/diagnóstico , Enfermedades del Sistema Endocrino/epidemiología , Femenino , Finlandia/epidemiología , Estudios de Seguimiento , Enfermedades de los Genitales Femeninos/sangre , Humanos , Estudios Longitudinales , Persona de Mediana Edad , Poliendocrinopatías Autoinmunes/sangre , Estudios Retrospectivos
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