References of "Beckers, Albert"
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See detailUne nouvelle forme d'adénomes hypophysaires familiaux : les FIPA-Détection et prise en charge
Beckers, Albert ULg; PETROSSIANS, Patrick ULg; Auriemma, R. S. et al

in Correspondances en MHDN (2011)

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See detailResistant prolactinomas
Vasilev, V.; Daly, Adrian ULg; VROONEN, Laurent ULg et al

in Journal of Endocrinological Investigation (2011), 34

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See detailHyperplasia-adenoma sequence in pituitary tumorigenesis related to aryl hydrocarbon receptor interacting protein gene mutation.
Villa, C.; Lagonigro, M. S.; Magri, F. et al

in Endocrine-Related Cancer (2011)

Mutations of the aryl hydrocarbon receptor interacting protein (AIP) gene are associated with pituitary adenomas that usually occur as familial isolated pituitary adenomas (FIPA). Detailed pathological ... [more ▼]

Mutations of the aryl hydrocarbon receptor interacting protein (AIP) gene are associated with pituitary adenomas that usually occur as familial isolated pituitary adenomas (FIPA). Detailed pathological and tumor genetic data on AIP mutation-related pituitary adenomas are scarce. Non-identical twin females presented as adolescents to the emergency department with severe progressive headaches caused by large pituitary macroadenomas requiring emergency neurosurgery; one patient had incipient pituitary apoplexy. Post-surgically the patients were found to have silent somatotrope adenomas on pathological examination. Furthermore, the light microscopic, immunohistochemical and electron microscopic studies demonstrated tumors of virtually identical characteristics. The adenomas were accompanied by multiple areas of pituitary hyperplasia, which stained positively for growth hormone, indicating somatotrope hyperplasia. Genetic analyses of the FIPA kindred revealed a novel E216X mutation of the AIP gene, which was present in both affected patients and the unaffected father. Molecular analysis of surgical specimens revealed loss of heterozygosity (LOH) in the adenoma, but showed that LOH was not present in the hyperplasic pituitary tissue from either patient. AIP immunostaining confirmed normal staining in the hyperplastic tissue and decreased staining in the adenoma in the tumors from both patients. These results demonstrate that patients with AIP germline mutation can present with clinically silent somatotroph pituitary adenomas. The finding of somatotrope hyperplasia unaccompanied by AIP LOH, suggests that LOH at the AIP locus may be a late event in the progression from hyperplastic to adenomatous tissue. [less ▲]

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See detailGenetic susceptibility in pituitary adenomas : from pathogenesis to clinical implications
Jaffrain-Rea, Marie-Lise; Daly, Adrian ULg; Angelini, Mariolina et al

in Expert Review of Endocrinology & Metabolism (2011)

Pituitary adenomas (PA) usually present sporadically, with a multifactorial pathogenesis including somatic mutational events in cancer-related genes. Genetic predisposition implies the presence of ... [more ▼]

Pituitary adenomas (PA) usually present sporadically, with a multifactorial pathogenesis including somatic mutational events in cancer-related genes. Genetic predisposition implies the presence of germline DNA alterations with a variety of impacts on pituitary cell biology, translating into a variable penetrance of the disease. Genetic causes must be considered in the presence of specific clinical settings, such as familial occurrence of PA, with or without extrapituitary diseases, and may also be suspected in young patients with macroadenomas. We <br />review the clinical implications of genetic predisposition, with special attention to Multiple Endocrine Neoplasia type 1 (MEN1), Carney’s complex (CNC) and FIPA (Familial Isolated Pituitary Adenoma), and the scenario of genetic screening in selected patients with an apparently sporadic disease is discussed. [less ▲]

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See detailMutations of calcium-sensing receptor gene: two novel mutations and overview of impact on calcium homeostasis
Livadariu, E.; Auriemma, R. S.; Rydlewski, C. et al

in European Journal of Endocrinology (2011)

Objective: Genetic disorders of calcium metabolism arise in a familial or sporadic setting. The calcium-sensing receptor (CaSR) plays a key role in maintaining calcium homeostasis and study of the CASR ... [more ▼]

Objective: Genetic disorders of calcium metabolism arise in a familial or sporadic setting. The calcium-sensing receptor (CaSR) plays a key role in maintaining calcium homeostasis and study of the CASR gene can be clinically useful in determining etiology and appropriate therapeutic approaches. We report two cases of novel CASR gene mutations that illustrate the varying clinical presentations and discuss these in terms of the current understanding of CaSR function. Patients and Methods: A 16 yr-old patient had mild hypercalcemia associated with low-normal urinary calcium excretion and normal-to-high parathyroid hormone (PTH) levels. Because of negative family history, familial hypocalciuric hypercalcemia (FHH) was originally excluded. The second patient was a 54 yr-old man with symptomatic hypocalcemia, hyperphosphatemia, low PTH, and mild hypercalciuria. Familial investigation revealed the same phenotype in the patient's sister. The coding region of the CaSR gene was sequenced in both probands and their available first-degree relatives. Results: The first patient had a novel heterozygous inactivating CASR mutation in exon 4, which predicted a p.A423K change; genetic analysis was negative in the parents. The second patient had a novel heterozygous activating CASR mutation in exon 6, which predicted a p.E556K change; the affected sister of the proband was also positive. Conclusions: We reported two novel heterozygous mutations of the CASR gene, an inactivating mutation in exon 4 and the first activating mutation reported to date in exon 6. These cases illustrate the importance of genetic testing of CASR gene to aid correct diagnosis and to assist in clinical management. [less ▲]

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See detailGender-related differences in MEN1 lesion occurrence and diagnosis: a cohort study of 734 cases from the Groupe d''etude des Tumeurs Endocrines
goudet, p; Bonithon-Kopp, C.; Murat, A. et al

in European Journal of Endocrinology (2011)

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See detailA familial pituitary tumor syndromes
Vasilev, Vladimir; Daly, Adrian ULg; PETROSSIANS, Patrick ULg et al

in Endocrine Practice : Official Journal of the American College of Endocrinology and the American Association of Clinical Endocrinologists (2011), 17(3),

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See detailHet belang van dosisoptimalisatie van analogen van somatostatine in acromegalie
Vasilev, Vladimir; Beckers, Albert ULg

in Andrologic (2011), 7(4),

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See detailImpact of germline AIP mutations on tumor characteristics and Management in young acromegalic patients : results of an age-and tumor diameter matched cohort study
Tichomirowa, Maria A.; Theodoropoulou, Marily; Daly, Adrian ULg et al

in Abstract book - Endo 2011 (2011)

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See detailFaut-il rechercher des anomalies génétiques constitutionnelles des gènes AIP et MEN1 chez un sujet jeune atteint d'adénome hypophysaire isolé sporadique ?
Cuny, T.; Pertuit, M.; Van bellinghen, J. F. et al

in Annales d'Endocrinologie - 28ème congrès de la société Française d'Endocrinologie (2011)

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See detailImpact des mutations germinales du gène AIP sur les caractéristiques tumorales et la prise en charge médicale chez les patients acromégales jeunes : résultats d'une étude sur des populations appariées pour l'âge et le diamètre de la tumeur
Beckers, Albert ULg; Tichomirowa, m; Theodoropoulou, M. et al

in Annales d'Endocrinologie - 28ème congrès de la société Française d'Endocrinologie (2011)

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See detailAdjuvant MIBGI131 therapy in a young patients with aggressive paraganglioma
VROONEN, Laurent ULg; MAWEJA, Sylvie ULg; LILET, Henri ULg et al

in Annales d'Endocrinologie - 28ème congrès de la société Française d'Endocrinologie (2011)

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See detailA tall man with hypogonadism
Daly, Adrian ULg; VALDES SOCIN, Hernan Gonzalo ULg; Beckers, Albert ULg

in Diagnostic Dilemmas : Images in Endocrinology (2011)

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See detailIntérêt d'une augmentation de dose des analogues de la somatostatine dans l'acromégalie
Vasilev, Vladimir; Beckers, Albert ULg

in Andrologic (2011), 7(4),

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See detailWhat to do with a pituitary incidentaloma ?
Beckers, Albert ULg; Daly, Adrian ULg

in Expert Review of Endocrinology & Metabolism (2011)

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See detailStrategies for screening and management of Familial Isolated Pituitary Adenomas (FIPA) : Our experience on 17 families in a single center in Brazil
Naves, L.; Casulari, L. A.; Azevedo, M. F. et al

in Abstract book - Endo 2011 (2011)

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