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1.
Gac. méd. Méx ; 138(1): 89-100, ebe.-feb. 2002.
Article in Spanish | LILACS | ID: lil-333642

ABSTRACT

Our early pioneering clinical trials in Mexico with natural and synthetic thyrotropin-releasing hormone (TRH) and luteinizing hormone releasing hormone (LH-RH) also known as gonadotropin releasing hormone (Gn-RH), were reviewed. Highly purified TRH of porcine origin was shown to stimulate Thyrotropin (TSH) release in hypothyroid cretins. Subsequent tests with synthetic TRH also demonstrated significant increases in plasma TSH in normal men and women as well as in patients with primary hypothyroidism and other endocrine disorders. Even more extensive clinical studies were carried out with highly purified natural porcine LH-RH. Subjects with normal basal serum levels of gonadotropins, low levels (men and women pretreated with steroids) and high levels (e.g. post menopausal women) all responded to LH-RH with a release of LH and FSH. The results of these early studies with the natural LH-RH were confirmed by the use of synthetic LH-RH. These investigations made in Mexico with TRH and LH-RH preceded all other clinical studies by a wide margin. Subsequently various clinical investigations with LH-RH agonists and antagonists were also carried out. All these studies played a major role in introducing hypothalamic-releasing hormones into clinical medicine.


Subject(s)
Humans , Clinical Trials as Topic , Gonadotropin-Releasing Hormone , International Cooperation , Thyrotropin-Releasing Hormone
2.
J. bras. urol ; 12(4): 150-2, jul.-ago. 1986. ilus
Article in Portuguese | LILACS | ID: lil-34215

ABSTRACT

Paciente com carcinoma de próstata, retençäo urinária, metástase pulmonar e metástase ósseas foi tratado com D-Trp-6-LH-RH (decapeptyl) por 11 meses. Após 4 meses, houve regressäo das metástases ósseas e pulmonares e alívio da obstruçäo urinária. Apesar desse tratamento ter sido interrompido há mais de 18 meses, o paciente continua assintomático e sem recorrência das metástases ósseas e pulmonares


Subject(s)
Aged , Humans , Male , Gonadotropin-Releasing Hormone/therapeutic use , Lung Neoplasms/secondary , Prostatic Neoplasms/drug therapy , Lung Neoplasms/drug therapy
4.
Arch. invest. méd ; 16(supl 3): 105-14, 1985. ilus, tab
Article in Spanish, English | LILACS | ID: lil-37037

ABSTRACT

Se estudió en un grupo de individuos normales la acción de varias dosis de somatostatina y del análogo D5-F-TrP8-D-Cys14-SS sobre la liberación inducida por arginina de insulina, glucagon y hormona de crecimiento (HC). La somatostatina en dosis de 100 g/h suprimió la liberación de insulina, glucagon y HC. El análogo D5-F-TrP8-D-Cys14-SS en dosis de 10 a 20 g/h inhibió a la HC y al glucagon, pero no a la insulina. Estos resultados muestran que es posible obtener análogos de la somatostatina que supriman en forma selectiva a la liberación de insulina, lo que puede ser de gran valor clínico en el manejo de diabetes mellitus, acromegalia, pancreatitis y úlcera péptica


Subject(s)
Humans , Arginine/pharmacology , Glucagon/metabolism , Insulin/metabolism , Somatostatin/pharmacology , Growth Hormone/metabolism
5.
Arch. invest. méd ; 13(2): 117-22, 1982.
Article in Spanish | LILACS | ID: lil-7534

ABSTRACT

La funcion del hipotalamo en la regulacion del apetito se basa en el conocimiento de areas especificas cuya estimulacion o destruccion produce efectos definidos de hiperfagia o de afagia, pero hasta el momento no se ha identificado el mecanismo. Desde hace mas de 15 anos se postulo que la regulacion del apetito podria efectuarse por un mecanismo humoral, mas que neurogeno, y que la substancia causante podria ser elaborada por el hipotalamo. Este enunciado se apoya con la identificacion de varias de las hormonas tipicamente gastrointestinales, que tambien se encuentran en tejido nervioso central, especialmente en hipotalamo, en donde pueden participar en la regulacion del apetito. Recientemente se ha encontrado que tienen tambien efecto en la regulacion del apetito otros peptidos no relacionados con el tubo gastrointestinal.Describimos algunos de los hallazgos mas importantes que apoyan la participacion peptidergica a nivel hipotalamico en el complejo de la regulacion del apetito


Subject(s)
Appetite Regulation , Peptides , Thyrotropin-Releasing Hormone
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