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Biomedical subjects

M Grandi

Publications and source records attributed to M Grandi.

At least 73 records · Page 4Linked to original sources
PubMed1987

LRH-stimulated release of bioactive and immunoreactive LH in a patient with the XX male syndrome.

Serum levels of biologically active LH (bLH) and immunoreactive LH (iLH) under basal conditions and in response to the iv injection of 0.1 mg synthetic LRH were measured in a 15-year-old boy with the 46,XX karyotype. LH bioactivity was assessed "in vitro" on mouse Leydig cell preparations, whereas iLH levels were measured by a double antibody RIA technique. High basal levels of both bLH and iLH were shown in the XX male. Following LRH administration, the relative maximum response of LH above basal levels (LH delta %) was higher for iLH than for bLH. Consequently, the LH bioactivity to immunoreactivity (b/i) ratio decreased from basal values. Since a similar decrease in the b/i ratio of LRH-stimulated LH has been observed in patients with Klinefelter's and Turner's syndrome, we can suppose that in the chromosomal disorders of sex differentiation the pituitary gland possesses a lower responsiveness for bLH than the normal pituitary.

Adolescent↗
PubMed1985

[A small epidemic focus of pulmonitis caused by Legionella].

A mini-epidemic consisting of 5 cases of Legionnaire's disease treated during september 1983 is reported. These patients shared many of the symptoms distinguishing the most common form of this disease in its severe or very severe form and some characteristic features of this case series are emphasised. It was impossible to trace the source of the outbreak, in spite of the fact that the mini-epidemic took place in an open situation. It is underlined that diagnosis is mainly clinical. The Legionella pneumophila bacteria should always be considered as one of the causal agents of bronchopneumonia, particularly when the following conditions are fulfilled: a) the disease takes the form of a confined, out-of-season, mini-epidemic; b) it is accompanied by multisystemic symptomatology and/or much greater involvement of general conditions that is usually to be expected in normal cases of bronchopneumonia. Since the disease is often fatal, erythromycin or rifampicin treatment should be started upon the slightest suspicion of contagion.

Adolescent↗
PubMed1985

Contragestational profile of the tumor-inhibiting agent, L-alanosine, in the rat and the hamster.

L-Alanosine [L-2-amino-3(N-hydroxy-N-nitrosamino)propionic acid], a tumor-inhibiting agent, induces pregnancy arrest after single or multiple SC or PO administration to rats and hamsters. Its contragestational effects are dose- and route-dependent, with no important differences in species-sensitivity or administration schedules. L-Alanosine is maximally effective shortly (3-4 days) after implantation. Both placenta and fetus appear to be target tissues. Consistent with previous in vitro findings, adenine but not aspartic acid counteracts the contragestational action of L-alanosine. The 'contragestational test', i.e., the effect on conceptus growth, appears to be an interesting approach for learning more about the antiproliferative activity of an antineoplastic agent.

Adenine↗
PubMed1984

[Psychosomatic disorders considered from an internist viewpoint. II. Problems of drug therapy].

Following a previous communication concerning some of the principal diagnostic and differential diagnostic questions regarding psychosomatic pathology, with the present note the authors wish to review the most common therapeutic problems related to these disorders. The text has been subdivided into two parts. In the first part it has been adjusted the approach to the pharmacological treatment of these disorders, following principally the authors' experience, and, in the second, have been analyzed some of the most common prejudices that have taken shape around this therapeutic praxis and that have contributed so much to handicap the diffusion of antidepressants in general practice. The authors conclude providing some clues both to those who, encouraged by the reading of this paper, should feel persuaded to deal with psychosomatic disorders from the general practitioners' point of view and to those who, for any reason, should not feel to tackle this task.

Amitriptyline↗
PubMed1984

[Psychosomatic disorders considered from an internist viewpoint. I. Nosographic aspects and diagnostic problems].

After a brief introduction regarding the nosography of psychosomatic disorders and the main reasons that have little by little discouraged non-psychiatric physicians to deal with this type of pathology, considering its high incidence among all the areas of general practice, the Authors go on discussing the diagnostic problems and pointing out the most important aspects concerned with these. The Authors conclude by warning not to over-value the effects obtained with an antidepressant especially when it is set up only on the basis of the ex-juvantibus principle. The Authors also invite their colleagues general practitioners to take greater care in the fight for prevention and treatment of these disorders, side by side with the psychiatrist.

Antidepressive Agents↗
PubMed1984

[Role and importance of antidepressants in general medicine. Bibliographic review and case contribution].

Starting from the consideration that communications relating to antidepressant drugs are chiefly reported by psychiatrists and that such reports deal with cases that we don't find in general practice, or at least marginally, the authors go on considering again their material consisting of 944 patients treated with antidepressants alone or associated with tranquilizers and/or with neuroplegic sedatives, hoping to gather usefull informations for a better definition of the role of these drugs in this large nosographic area. The authors could, therefore, by that way: confirm the high incidence of psychosomatic disorders among all the professional areas concerned with general practice; confirm the clear prevalence of the less symptomatic forms; verify in a high percentage of cases the coexistence of an organic disorder in way of progress or in outcome; confirm the double role of these drugs, diagnostic (ex-juvantibus) and therapeutical; suggest a third role of nosographic nature.

Antidepressive Agents↗
PubMed1984

Nocturnal prolactin secretion in carpal tunnel syndrome.

The correlation between plasma PRL levels and CTS was investigated in 21 patients in whom a specific causal agent of CTS could not be identified. No correlation between plasma PRL levels and other clinical and neurophysiological data was detected.

Adult↗
PubMed1984

Synthesis and in vitro biological evaluation of N-[(5-amino-1-beta-D-ribofuranosyl-1H-imidazol-4-yl)carbonyl]-3- (hydroxynitrosamino)-L-alanine (L-alanosine AICO ribonucleoside).

L-Alanosine [3-(hydroxynitrosoamino)-L-alanine] is an antitumor antibiotic that at the present is undergoing phase II clinical trials. Its mode of action as well as its metabolism has been extensively studied, and the metabolite N-[(5-amino-1-beta-D-ribofuranosyl-1H-imidazol-4-yl)carbonyl]-3- (hydroxynitrosoamino)-L-alanine ribonucleotide (L-alanosine AICOR) proved to be an extremely potent inhibitor of de novo purine biosynthesis and is thus primarily responsible for the antitumor activity of the drug. The synthesis of the corresponding ribonucleoside, i.e., N-[(5-amino-1-beta-D-ribofuranosyl-1H-imidazol-4-yl)carbonyl]-3- (hydroxynitrosamino)-L-alanine ribonucleoside (L-alanosine AICO ribonucleoside), was accomplished by condensation of a suitably protected derivative of L-alanosine with N-succinimidyl-5-amino-1-(2,3,5-tri-O-acetyl-beta-D-ribofuranosyl)-1H-im idazole-4-carboxylate followed by the removal of the protective groups. The biological activity of L-alanosine AICO ribonucleoside was tested in vitro on whole tumor cells and on the isolated enzyme adenylosuccinate synthetase and in vivo on murine experimental leukemia. The compound was found to be inactive in these tests.

Antibiotics, Antineoplastic↗
PubMed1981

[Nelson's syndrome. A case report (author's transl)].

Two cases of Nelson syndrome with typical clinical and laboratory features are presented. Both had radiological evidence of pituitary tumor; in one case it was evident on the plain film while in the other one it was better appreciated by means of tomography. It is important in the post-surgery follow-up of patients who underwent bilateral adrenectomy for Cushing's disease a periodical evaluation of skin pigmentation, visual field width and sellar morphology for the early detection of a pituitary adenoma.

Adolescent↗