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Biomedical subjects

S Wegener

Publications and source records attributed to S Wegener.

At least 37 records · Page 2Linked to original sources
PubMed1990

[Factors influencing the result of kidney transplantation with special reference to the HLA system in conventional immunosuppression].

Among 331 recipients of cadaveric renal allografts, transplanted from 1976 to 1986 at the Rostock Transplant Center the graft survival rates have been analyzed. All patients have been treated by conventional immunosuppressive therapy using azathioprine and prednisolone. A relation between graft survival and immunological factors was found: the better the HLA match, the better the transplant results. The necessity of a restrictive transfusion regime was stressed. The higher the number of pretransplant transfusions, the higher is the panel reactivity with following lower graft survival. Cold ischemic time was without influence on graft survival. The introduction of cyclosporin may improve the graft survival rate as known of 10-20%.

Azathioprine↗
PubMed1989

[HLA antigen frequencies in patients with autosomal dominant polycystic kidney degeneration].

20 non-related patients suffering from autosomal dominantly polycystic renal disease were HLA-A, -B, -C and -DR typified and the HLA frequencies were compared with the normal population. Tissue typing was performed using the lymphocytotoxicity test using 180 well-characterized test sera. In contrast to the literature no significant differences were found. However, the value of erythrocytic phosphoglycolate-phosphatase-phenotyping should be checked in the genetic control and consultation.

Chromosome Aberrations↗
PubMed1989

[When is fresh frozen plasma indicated?].

Fresh frozen plasma is a biological drug for the treatment of selected coagulation disturbances, a valuable substance for therapeutic plasma exchange and for the therapy of surgical haemorrhages within the blood component treatment programme. Since fresh frozen plasma is simultaneously the basic substance for the production of containing factor VIII preparations, a non-indicated excess consumption in hospitals should be avoided in order not to endanger the supply of haemophilia A patients with factor VIII.

Blood Coagulation Disorders↗
PubMed1988

Haloperidol- and apomorphine-induced changes in pup searching behaviour of house mice.

Maternal pup searching behaviour of lactating house mice treated with apomorphine, haloperidol or saline was examined on a running board with a central depression as a nest. Pup searching was elicited by artificial ultrasonic stimuli: a female moved out from the nest either towards a 50 kHz tone (key stimulus) which is adequate to activate species specific pup searching behaviour or towards a 20 kHz tone (neutral stimulus), thus showing her preference for one of these stimuli. Under apomorphine (0.00625; 0.0125; 0.025 mg/kg) the females preferred the key stimulus. Nevertheless apomorphine (0.00625-0.025 mg/kg) prolonged response latencies and shortened the duration of pup searching. At the highest dose (0.05 mg/kg), apomorphine induced stereotyped sniffing. Haloperidol (0.025; 0.05; 0.1 mg/kg) had opposite effects to apomorphine: it lowered the threshold for elicitation, shortened response latencies and prolonged the duration of pup searching. Females treated with haloperidol (0.025-0.1 mg/kg) did not prefer the key stimulus. Changes in response elicitation and in the performance of pup searching induced by apomorphine and haloperidol, respectively, were assumed to be due to i) a reduced and an increased responsiveness to external stimuli respectively, ii) an enhanced and a reduced tendency for response switching respectively, and iii) a preference for spontaneous behaviour in apomorphine-treated females, with an increased dependence on exteroceptive stimuli following haloperidol.

Acoustic Stimulation↗
PubMed1988

[HLA antigens in patients with laryngeal cancer].

The HLA-ABC- and -DR-antigens of patients with carcinoma of the larynx were determined. The frequencies were compared with those of a normal population. No significant deviations in the antigen frequencies were observed in the distribution of HLA antigens. Therefore, participation of HLA-ABC and -DR gene products in pathogenesis of carcinoma of the larynx as an expression of a genetical component cannot be postulated till now.

Female↗
PubMed1987

X-linked hypogammaglobulinaemia with a late secretion defect. A family study.

Three boy cousins suffering from x-linked hypogammaglobulinaemia have been described. Their disease is quite different from the classical x-linked hypogammaglobulinaemia. We present data from 15 family members of three families. The three mothers are sisters and 3 boys from 5 are suffering from immunodeficiency. HLA A, B and DR typing and in vitro diagnostics of immune functions of all family members were carried out. In the patients we could demonstrate a well functioning T cell system which seems to be regular for T cell help on PMW driven B cell maturation into cytoplasmic immunoglobulin positive (cIg+) cells of all immunoglobulin classes but we had no evidence for IgG secreting cells in a plaque forming cell (PFC) assay. The registration of spontaneous suppressor phenomena should be taken into account. If patients undergo an gamma-globulin therapy the changed suppressor effects come back to normal values but the secretion defect is unchanged. The three healthy mothers express one identical haplotype (A2 B8 DR3) which we could demonstrate in the three patients but also in one healthy boy.

Agammaglobulinemia↗
PubMed1984

Family studies in multiple sclerosis: HLA haplotypes of affected sib-pairs.

The occurrence of multiple sclerosis (MS) in several members of families has been observed in 4.8% of 105 MS patients from a limited epidemiological area of Rostock. Typing of the HLA antigens in 4 affected sib-pairs showed two identical HLA haplotypes in 3 of the pairs: 1 pair shared one haplotype. These findings point to a dominant mode of inheritance of the disease susceptibility gene together with the HLA haplotype. The assessment of family studies in MS is discussed.

Adult↗
PubMed1983

Serum protein binding of diazepam, desmethyldiazepam, furosemide, indomethacin, warfarin, and phenobarbital in human fetus, mother, and newborn infant.

The protein binding of diazepam, desmethyldiazepam, furosemide, indomethacin, warfarin, and phenobarbital in maternal and fetal cord serum at the time of birth, and in serum of neonates between 1 and 11 days of age was studied. The protein binding of diazepam and desmethyldiazepam was higher in the fetus than in the mother, thus explaining the fetal cumulation of these drugs in vivo. After birth, both drugs were partially displaced from neonatal binding sites. The decreased protein binding capacity in the mother and the neonate related to increased free fatty-acid levels. The pattern of protein binding of warfarin in the groups investigated was a mirror image of those of diazepam and its metabolite. The protein binding of indomethacin progressively decreased in the neonate during the first two postnatal weeks, while that of furosemide remained at lowered levels throughout this time interval. The protein binding of phenobarbital was similar in the groups investigated. Our results suggest that drugs such as diazepam, which can be displaced from binding sites by free fatty acids, may cumulate in the fetus and may exhibit much decreased protein binding and possibly unexpectedly strong effects in the neonate after birth.

Blood Proteins↗