Pegvisomant in acromegaly: a multicenter real-life study in Argentina

ABSTRACT Objective To describe the long term safety and efficacy of pegvisomant (PEGV), and the predictors of treatment response in patients with acromegaly in the real life setting. Subjects and methods We retrospectively reviewed the clinical, hormonal and radiological data of acromegalic patients treated with PEGV in 17 Argentine centers. Results Seventy-five patients (age range 22-77, 51 females) with acromegaly have been treated with PEGV for up to 118 months (median 27 months). Before PEGV, 97.3% of patients had been treated with medical therapy, surgery and/or radiotherapy, two patients had no previous treatment. At that time, all patients had an IGF-1 above the upper normal limit (ULN) (mean 2.4 x ULN ± 0.98, range 1.25-7). At diagnosis of acromegaly 84% presented macroadenomas, prior to PEGV only 23,5% of patients remained with tumor remnant > 1 cm, the remaining showed normal or less than 1 cm images. Disease control (IGF-1 ≤ 1.2 x ULN) was achieved in 62.9% of patients with a mean dose of 11.8 mg/day. Thirty-four patients (45%) received PEGV monotherapy, while 41 (55%) received combined therapy with either somatostatin analogues and/or cabergoline. Adverse events related to PEGV were: local injection site reaction in 5.3%, elevated liver enzymes in 9.3%, and tumor size growth in 9.8%. Pre-PEGV IGF-I level was the only predictor of treatment response: 2.1 x ULN vs 2.8 x ULN in controlled and uncontrolled patients respectively (p < 0.001). Conclusion this long term experience indicates PEGV treatment was highly effective and safe in our series of Argentine patients with acromegaly refractory to standard therapies. Arch Endocrinol Metab. 2019;63(4):320-7

Guía de recomendaciones para el diagnóstico clínico, bioquímico y por imágenes de la acromegalia. Federación Argentina de Sociedades de Endocrinología (FASEN) - 2017 / Guidelines for the clinical, biochemical and imaging diagnosis of acromegaly. Federación Argentina de Sociedades de Endocrinología (FASEN) - 2017

RESUMEN Objetivo El objetivo de esta guía es formular pautas para el diagnóstico de acromegalia adecuadas a los parámetros internacionales y a los recursos disponibles en Argentina. Participantes El grupo de trabajo propuesto por la Federación Argentina de Sociedades de Endocrinología (FASEN) incluyó un equipo multidisciplinario compuesto por 5 médicos endocrinólogos (4 especialistas y una profesional joven), un neurocirujano y una bioquímica, expertos en el tema. Evidencia Esta guía basada en la evidencia se desarrolló utilizando la metodología AGREE para describir tanto las recomendaciones como la calidad de las pruebas. Los borradores de esta guía fueron revisados por un grupo multidisciplinario de especialistas reconocidos en acromegalia. Conclusiones Utilizando un enfoque basado en la evidencia, esta guía aborda la evaluación diagnóstica de la acromegalia en Argentina.

ABSTRACT Objective The aim is to formulate guidelines for the clinical, biochemical and imaging diagnosis of acromegaly in accordance with international criteria and resources available in Argentina. Participants The task force selected by FASEN included a multidisciplinary team of 5 endocrinologists (4 senior and 1 junior), a neurosurgeon and a biochemist, experts in the field. Evidence This evidence-based guidelines were developed using the AGREE methodology to describe both the recommendations and the quality of evidence. The draft of these guidelines was reviewed by endocrinologists, biochemists and neurosurgeons experts in the field. Conclusions Using an approach based on evidence, these guidelines address the diagnosis of acromegaly in Argentina.

Correlación entre parámetros convencionales del espermograma y la preuba de resistencia osmotica en pacientes integrantes de parejas fertiles o infertiles / The correlation between the conventional spermogram parameters and the osmotic resistance tests in patients from among fertile and infertile couples

It is well accepted that routine semen analysis is a useful tool for valuation of male potential fertility. In our environment, HOST has been recently applied as an additional approach which early detects structural and/or functional alterations of the sperm membranes. We investigated the possible relationship between some semen parameters and HOST in males from A) fertile couples (23-32 years old; n = 11) and B) sterile couples (25-35 years old; n = 171. Sperm concentration, motility, morphology and HOST (semen incubation in hypoosmotic saline solution-sodium citrate and fructose, 150 m0sm/1--, 37 degrees C during 60 min) were evaluated. In HOST determinations, results higher than 60 of swollen cells are considered within the normal range. In our study, sperm from males of B group showed a significantly lower percentage of hyperhydrated cells than those from A group (55.7 + 2.2 and 70.4 + 2.3 respectively; p < .001). In addition, a significant statistical correlation between HOST vs motility or normal morphology was found. On the contrary, we detected no correlation between HOST vs sperm concentration or volume. We suggest that development and application of HOST as a routine, can play an important role in the evaluation and prognosis of an infertile couple.