Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Guillermo Alonso is active.

Publication


Featured researches published by Guillermo Alonso.


Hormone Research in Paediatrics | 2007

True hermaphroditism in a phenotypic male without ambiguous genitalia : An unusual presentation at puberty

Guillermo Alonso; Titania Pasqualini; Julio Busaniche; Eduardo Ruiz; Héctor E. Chemes

True hermaphroditism usually appears with ambiguous genitalia requiring extensive evaluation during the neonatal period. There have been occasional cases with better differentiation of external genitalia, leading to delays in diagnosis. We report the case of an adolescent boy with true hermaphroditism who presented with normal external genitalia and no sexual ambiguity. He was referred due to progressive gynecomastia and arrest of puberty. He presented at the age of 16 years for gynecomastia of rapid progression with normal penile development and both gonads in scrotum and normal testosterone and increased gonadotropin levels. Gonadal ultrasound scan was compatible with testicular and ovarian tissues in scrotum, and the karyotype showed two cellular lines (46,XX/46,XY). Gonadal histology revealed bilateral ovotestes. A genotype polymerase chain reaction mediated analysis using seven microsatellite markers did not confirm chimerism. Clinical findings and mechanism of generation are discussed.


Archivos Argentinos De Pediatria | 2013

[Final height in symptomatic boys with late-onset adrenal hyperplasia (LOCAH), treated with glucocorticoids. Clinical cases].

Titania Pasqualini; Guillermo Alonso; Cecilia Fernández; Noemí Buzzalino; Liliana Dain

Although corticoid replacement is recommended for those late-onset adrenal hyperplasia with clinical manifestations, asymptomatic patients do not need treatment. We describe clinical features at diagnosis, treatment, and growth till adult- height, in 4 boys. At diagnosis, age ranged from 9.2-11.6 years. The initial symptoms/signs were: precocious pubarche (n = 2), accelerated bone age (n = 1) and precocious puberty (n = 1). All of them presented elevated 17 hydroxyprogesterone levels and were compound heterozygotes carrying p.V281L mutation. Since, at diagnosis, bone age was significantly advanced for chronological age (13.1 ± 0.5 vs. 10.2 ± 1.1 p = 0.008), hydrocortisone therapy was initiated. During follow-up, mean height Z score decreased 1.4 ± 0.4 SDS (p = 0.007), though adult mean height was not different from target height (-0.39 ± 0.7 vs. -0.04 ± 0.5 SDS, p = 0.054). In conclusion, in 4 symptomatic patients, accurate treatment of late-onset adrenal hyperplasia led to an adult mean height not different from target height. Advanced bone age at diagnosis and the loss of height during pubertal development suggest the need of therapy.


Pediatric Nephrology | 2007

Effects of deflazacort vs. methylprednisone: a randomized study in kidney transplant patients

Jorge R. Ferraris; Titania Pasqualini; Guillermo Alonso; Patricia Sorroche; A.M. Galich; Héctor G. Jasper


Medicina-buenos Aires | 2007

CONGENITAL ADRENAL HYPERPLASIA CLINICAL CHARACTERISTICS AND GENOTYPE IN NEWBORN, CHILDHOOD AND ADOLESCENCE

Titania Pasqualini; Guillermo Alonso; Rosángela Tomasini; A.M. Galich; Noemí Buzzalino; Cecilia Fernández; Carolina Minutolo; Liliana Alba; Liliana Dain


Medicina-buenos Aires | 2004

Distintas formas de presentación clínica de un raquitismo hipofosfatémico autosómico dominante por mutación del factor de crecimiento fibroblástico 23 en una familia

Armando Luis Negri; Teresa Negrotti; Guillermo Alonso; Titania Pasqualini


Pediatric Nephrology | 2010

A study on strategies for improving growth and body composition after renal transplantation

Jorge R. Ferraris; Titania Pasqualini; Guillermo Alonso; Patricia Sorroche; A.M. Galich; Paula Coccia; Lidia Ghezzi; Verónica Ferraris; Liliana Karabatas; Clara Guida; Héctor Jasper


Archive | 2013

Talla final en varones sintomáticos con hiperplasia suprarrenal no clásica tratados con glucocorticoides. Casos clínicos Final height in symptomatic boys with late-onset adrenal hyperplasia (LOCAH), treated with glucocorticoids. Clinical cases

Titania Pasqualini; Guillermo Alonso


Archivos Argentinos De Pediatria | 2013

Talla final en varones sintomáticos con hiperplasia suprarrenal no clásica tratados con glucocorticoides: Casos clínicos

Titania Pasqualini; Guillermo Alonso; Cecilia Fernández; Noemí Buzzalino; Liliana Dain


Conexión Pediátrica | 2010

Síndrome de Swyer: la importancia de ser médicos de adolescentes y seguir siendo pediatras

Cristina Catsicaris; Titania Pasqualini; Guillermo Alonso; Sebastian Gogorza; Lucila Barrionuevo


Conexión Pediátrica | 2008

Patrones de crecimiento compensador en niños con enfermedad celíaca dependiente de la edad y del compromiso previo

Guillermo Alonso; Andrea Silva; Mónica E. Del Compare; Titania Pasqualini; Daniel D'Agostino; Marina Orsi

Collaboration


Dive into the Guillermo Alonso's collaboration.

Top Co-Authors

Avatar

Titania Pasqualini

Hospital Italiano de Buenos Aires

View shared research outputs
Top Co-Authors

Avatar

Titania Pasqualini

Hospital Italiano de Buenos Aires

View shared research outputs
Top Co-Authors

Avatar

Jorge R. Ferraris

University of Buenos Aires

View shared research outputs
Top Co-Authors

Avatar

A.M. Galich

Hospital Italiano de Buenos Aires

View shared research outputs
Top Co-Authors

Avatar

Cecilia Fernández

Instituto de Biología y Medicina Experimental

View shared research outputs
Top Co-Authors

Avatar

Liliana Dain

Instituto de Biología y Medicina Experimental

View shared research outputs
Top Co-Authors

Avatar

Marina Orsi

Hospital Italiano de Buenos Aires

View shared research outputs
Top Co-Authors

Avatar

Daniel D'Agostino

Hospital Italiano de Buenos Aires

View shared research outputs
Top Co-Authors

Avatar

Patricia Sorroche

Hospital Italiano de Buenos Aires

View shared research outputs
Top Co-Authors

Avatar
Researchain Logo
Decentralizing Knowledge