P. Rinieris

Plasma dopamine-beta-hydroxylase in familial and sporadic paranoid schizophrenia

This study was designed to check the hypothesis of low DBH activities in paranoid schizophrenia (PS), controlling for the influence of positive family history

Effects of Treatment with Various Doses of Haloperidol on the Pituitary-Gonadal Axis in Male Schizophrenic Patients

Fifteen male paranoid schizophrenics underwent an initial 4-week therapy with haloperidol 7.5 mg/day, and a subsequent 4-week treatment with haloperidol 15 mg/day, p.o. (group I). Another 15 male paranoid schizophrenics received an initial 4-week treatment with haloperidol 30 mg/day, and a subsequent 4-week therapy with haloperidol 60 mg/day, p.o. (group II). In each group of patients, serum prolactin (PRL), luteinizing hormone (LH) and testosterone (T) levels were measured before treatment and at the end of the two consecutive periods of treatment. A dose-related increase in serum PRL levels was found in both groups of medicated patients. Serum LH levels were not significantly affected by haloperidol treatment. A significant decrease in serum T levels was detected only in group II medicated patients, i.e., in the patients who were treated with relatively high daily doses (30 or 60 mg/day) of haloperidol.

A psychoendocrine study in male paranoid schizophrenics with delusional ideas of homosexual content.

ABSTRACT– The serum prolactin (PRL), luteinizing hormone (LH), testosterone (T) and estradiol (E) levels were investigated in a group of male paranoid schizophrenics with delusional ideas of homosexual content, in a group of male paranoid schizophrenics without delusional ideas of homosexual content, and in a group of healthy, male heterosexual subjects. Only male paranoid schizophrenics with delusional ideas of homosexual content had significantly lower serum PRL values and significantly higher serum E levels than those of the age‐matched group of normal, male heterosexual controls; also, these patients tended to have higher (though not to a statistically significant degree) serum LH and T levels than those of normal controls. Findings of this study are discussed within the framework of the possible involvement of endocrine factors in the occurrence of delusional ideas of homosexual content in male patients with paranoid schizophrenia.

Affective disorders and ABO blood types

Results of the present study provide evidence of: 1) a positive association between bipolar affective disorder and blood type O and a corresponding negative association between the former and blood type A, 2) a positive association between unipolar affective disorder and blood type O, and 3) a positive association between involutional depression and blood type A and a corresponding negative association between the former and blood types B and O.

Free-thyroxine index in mania and depression

Abstract Although free-thyroxine index is commonly used as a reliable method of thyroid function investigation,1,2 only Rybakowski and Sowinski3 have used this method for the assessment of thyroid function in mania. In depression, determination of free-thyroxine index by four research groups3,6 revealed contradictory results. For these reasons, it was thought that further research in this area would be justified.

Obsessive‐compulsive neurosis, anacastic symptomatology and ABO blood types

Determination of ABO blood types was carried out in 38 patients with obsessive‐compulsive neurosis, 48 schizophrenics with anancastic symptomatology, 31 depressives with anancastic symptomatology, 260 schizophrenics free of anancastic symptomatology and 65 depressives free of anancastic symptomatology. Results were compared with a representative sample of the general population.

Neuroticism and ABO blood types

In an attempt to interpret previous findings of a higher incidence of blood phenotype A and a lower incidence of blood phenotype 0 in patients with either obsessive‐compulsive neurosis or hysteria, it was hypothesized that phenotype 0 might be associated with personality traits that render the individual less prone to developing neurotic symptoms. To test the validity of this hypothesis Form A of the Eysenck Personality Inventory was administered to 600 normal individuals and their ABO phenotype was determined.

Effects of 4 weeks treatment with chlorpromazine and/or trihexyphenidyl on the pituitary-gonadal axis in male paranoid schizophrenics

SummarySerum prolactin (PRL), luteinizing hormone (LH) and testosterone (T) levels were estimated in a group of 30 male paranoid schizophrenics before and after 4 weeks treatment with chlorpromazine and/or trihexyphenidyl, and in a group of 14 healthy male individuals. After treatment with chlorpromazine (100 mg t.i.d., p. o.), 10 patients presented a significant increase in serum PRL values and a significant decrease in serum T values. A significant increase in serum PRL values was also found in 10 patients who were treated with chlorpromazine (100 mg t.i.d., p. o.) plus trihexyphenidyl (5 mg t.i.d., p. o.). No significant difference in any of the investigated endocrine parameters was detected in 10 patients after 4 weeks administration of trihexyphenidyl (5mg t.i.d., p.o.). Following chlorpromazine treatment with or without concomitant administration of trihexyphenidyl, 20 patients showed a significant increase in serum PRL levels and a significant decrease in serum LH and T levels.

Subtypes of Schizophrenia and ABO Blood Types

Determination of ABO blood types was carried out in 430 (171 female and 259 male) patients with hebephrenic schizophrenia and in 340 (155 female and 185 male) patients with paranoid schizophrenia. Results were compared with a random sample of 600 individuals (268 female and 332 male) drawn from the general population. No significant association was detected between any of the ABO blood phenotypes and affliction either with hebephrenic or paranoid schizophrenia

Obsessional Personality Traits and ABO Blood Types

The relation of ABO blood types to obsessional personality traits, as measured by the Leyton Obsessional Inventory (LOI), was studied in a sample of 600 normal individuals. High scorers of the LOI trait portion demonstrated a significantly lower incidence of phenotype O and a significantly higher incidence of phenotypes AB, A and B, taken together, compared to those of a general population sample and the entire study group. Findings of the present study, in conjunction with previous findings concerning a lower incidence of phenotype O and a higher incidence of phenotype A in obsessive compulsive patients, could be interpreted as indicating that phenotype O may be associated with personality traits hindering the development of obsessive-compulsive symptomatology.