Oncogene-induced senescence in pituitary adenomas and carcinomas

Krystallenia I. Alexandraki, Mohammed Munayem Khan, Harvinder S. Chahal, Nadezhda S. Dalantaeva, Giampaolo Trivellin, Dan M. Berney, Philippe Caron, Vera Popovic, Marija Pfeifer, Suzanne Jordan, Márta Korbonits, Ashley B. Grossman

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OBJECTIVE: The model of “oncogene-induced senescence” (OIS), resulting in cell-proliferation arrest, has recently been suggested as a possible explanation for the non-progression of pituitary tumours to malignancy. The aim of the study was to compare the expression …

Factors influencing the outcome of microsurgical transsphenoidal surgery for pituitary adenomas: A study on 184 patients

Kostas I. Lampropoulos, George Samonis, Panagiotis Nomikos

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OBJECTIVE: Evaluation of factors influencing the outcome of microsurgical transsphenoidal surgery in patients harbouring pituitary adenomas as well as of the efficacy and safety of this procedure. DESIGN: A total of 184 consecutive patients with pituitary adenomas …

Galectin-3 as a marker distinguishing functioning from silent corticotroph adenomas

Eleni Thodou, Theodore Argyrakos, George Kontogeorgos

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OBJECTIVE: Galectin-3 (Gal-3) belongs to the family of carbohydrate-binding proteins with high affinity for galactoside and is involved in many biological processes including cell growth and differentiation, cell adhesion, tumor progression, apoptosis and metastasis. The aim of this study was to disclose differences in the expression of Gal-3 in silent …

Human kallikrein 10 in surgically removed human pituitary adenomas

Fabio Rotondo, Antonio Di Ieva, Kalman Kovacs, Michael D. Cusimano, Luis V. Syro, Eleftherios P. Diamandis, George M. Yousef

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OBJECTIVE: Human kallikrein-like peptidase 10 (KLK10), a serine protease, plays an important role in the regulation of cell proliferation and tumor growth. In this work, we investigated KLK10 immunoexpression in various types of surgically removed human pituitary tumors …

Optic neuropathy following radiotherapy for Cushing?s disease: case report and literature review

Nikiforos Ballian, Ioannis I. Androulakis, Klio Chatzistefanou, Christianna Samara, Konstantinos Tsiveriotis, Gregory A. Kaltsas

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Radiation-induced optic neuropathy is a rare adverse effect of radiotherapy applied for the treatment of pituitary adenomas. We report a patient with a recurrent adrenocorticotrophin secreting pituitary adenoma who received external beam irradiation after failing surgical and medical therapy …

Aggressive silent corticotroph adenoma progressing to pituitary carcinoma. The role of temozolomide therapy

Olga Moshkin, Luis V. Syro, Bernd W. Scheithauer, Leon D. Ortiz, Camilo E. Fadul, Humberto Uribe, Ricardo Gonzalez, Michael Cusimano, Eva Horvath, Fabio Rotondo, Kalman Kovacs

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Temozolomide (TMZ) has recently been recommended as a novel approach in the management of aggressive pituitary tumors. Herein, we present the case of a 43-year-old man with a 20-year history of silent subtype 2 pituitary corticotroph adenoma. Nine surgical resections and radiotherapy had failed to provide a cure. Morphological evaluation of the tumor revealed …

Cyclopes and Giants: From Homer’s Odyssey to contemporary genetic diagnosis

Georgios K. Markantes, Anastasia Theodoropoulou, Anastasia K. Armeni, Vasiliki Vasileiou, Constantine A. Stratakis, Neoklis A. Georgopoulos

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Giant is a term used to describe a legendary humanlike being of great stature and strength. In Greek mythology, the giants Cyclopes rebelled against the Olympian Gods in a battle that ended in their final defeat, this resulting in Olympian sovereignty on earth …