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Biomedical subjects

P Peller

Publications and source records attributed to P Peller.

At least 19 recordsLinked to original sources
PubMed1992

Prolonged clearance is the primary abnormal reflux parameter in patients with progressive systemic sclerosis and esophagitis.

The purpose of this study is to determine if frequent reflux events from an incompetent LES or poor clearance from decreased peristalsis is the predominant abnormality in PSS patients with severe reflux esophagitis. Seven patients with both classic manometric findings of PSS and endoscopic findings of esophageal ulcerations and/or Barrett's esophagus were compared to nine patients with similar endoscopic findings but with no evidence of a connective tissue disorder. All patients underwent simultaneous intraesophageal pH monitoring and scintigraphy for a total of 40 min after a radiolabeled meal. Four of the PSS patients and all the non-PSS patients had simultaneous manometry. We found that PSS patients had significantly fewer reflux events (P less than 0.01), but the reflux events had significantly longer duration (P less than 0.01) compared to patients with similar severity of esophagitis and no connective tissue disease. We conclude that decreased smooth muscle peristalsis appears to be the primary contributor to acid exposure and esophageal injury in PSS.

Esophagitis, Peptic↗
PubMed1986

Correlation of antibodies to LAV/HTLV III in hemophiliacs with the use of virus-inactivated clotting factors.

The retrovirus LAV/HTLV III, highly likely to be responsible for the acquired immunodeficiency syndrome (AIDS) in some recipients of blood products, can be inactivated by chemical and/or heat treatment, so the use of virus-inactivated factor VIII and factor IX preparations for treating hemophilia A and B has become important. We examined hemophilic children and found that those children treated since 1979 with virus-inactivated preparations did not develop antibodies against LAV/HTLV III. In contrast, 77% of patients treated with conventional factor VIII or factor IX preparations had antibodies against this virus.

Alanine Transaminase↗
PubMed1985

Active immunization against varicella of children with acute leukaemia or other malignancies on maintenance chemotherapy.

Twenty-six patients with acute leukaemia and other malignancies susceptible to varicella were vaccinated with the Oka-strain live attenuated varicella vaccine during maintenance chemotherapy. All recipients showed no adverse clinical reactions. There was no spread of vaccine virus. Seroconversion was 94% in seronegative patients. Among those having low antibody titres before vaccination, a booster effect was demonstrable in 56%. None of the seroconverted recipients contracted varicella despite documented contact exposure. No case of herpes zoster occurred. The results suggest that, in immunocompromised children, live varicella vaccination has a protective effect against varicella infection which may result in a mortality rate of up to 7% in these patients.

Acute Disease↗
PubMed1984

[Comparative study of the prevalence of Epstein-Barr virus infections in Iran and Germany].

352 persons from Iran and 469 persons from West-Germany were tested for EBV-antibodies using an immunofluorescence assay. In Iran the virus infection starts early in infancy and attains higher antibody values as compared with age related German population. In the age group of 1-5 years 70% of the Iranians are antibody positive in contrast to only 56% of the Germans in the same age group. The high prevalence of EBV-antibodies is due to unfavourable hygienic facilities as well as to regional overpopulation.

Adolescent↗
PubMed1981

[Infections in children with leukaemia or malignant tumour treated with cytostatic agents: long-term study of 200 cases (author's transl)].

All children with leukaemia or malignant tumour receiving cytostatic agents were followed by virological tests over three years. Serological tests or virus isolation in 200 children demonstrated 238 instances of viral infection. Only those of the herpes group led to severe symptoms which, however, responded to treatment. The course of infections induced by respiratory viruses was no different from that in children not receiving immunosuppressive agents. It was possible, by using a "virus risk register", to give early protection to infected children by the appropriate prophylactic means. In addition to the virus infections there were seven cases of Pneumocystis carinii pneumonia which ended fatally in two. Since the prophylactic use of cotrimoxazole there have been no further cases.

Adolescent↗
PubMed1979

[Radiologic findings in newborns with group B streptococcal septicemia: clinical importance of heart size and lung manifestations (author's transl)].

Chest radiographs of thirteen neonates with group B streptococcal septicemia were evaluated for signs of early diagnosis. Six of the neonates had chest radiographs as seen in idiopathic respiratory distress syndrome (RDS). Seven patients had radiologic findings consistent with neonatal pneumonia. The children with RDS were in general smaller and born prematurelly, but three neonates with x-rays resembling RDS had normal birth weights and thus were mature. Cardiomegaly was observed in a high percentage with a prevalence in children with RDS. Heart size increased in two of the three children who died, but became normal in patients recovering from infection. Three patients had pleural effusions.

Birth Weight↗
PubMed1979

[A specific IgM test for the diagnosis of Epstein-Barr virus infections (author's transl)].

IgM antibodies specific for Epstein-Barr virus (EBV) were measured in 302 patients with high IgG antibody titers to study whether EBV was the cause of disease in children having one or more symptoms of classical infectious mononucleosis. IgM antibodies specific for EBV were found in all patients with the defined clinical picture of infectious mononucleosis. In addition the majority of cases with clinical suspicion of the disease had also specific IgM titers. Besides infectious mononucleosis EBV can also be the cause of other diseases like hepatitis, and lymphadenitis: we found IgM antibodies specific for EBV in 48% of patients with nonbacterial lymphadenitis and in 64% of patients with hepatitis not due to hepatitis A or B virus. In contrast to observations by others we were able to show heterophile antibodies in cases with incomplete features of infectious mononucleosis. IgM antibodies to EBV were found in 4 out of 85 controls only. We conclude that untypical features of infectious mononucleosis can be caused by EBV also. Therefore the determination of specific IgM antibodies to EBV can be helpful in the diagnosis of uncharacteristic EBV infections.

Adolescent↗
PubMed1978

[Distribution of cytomegalovirus in children and adults in the Munich area (author's transl)].

In a regional contamination study 798 healthy persons from the Munich area were examined for cytomegalovirus antibodies. The highest proportion of antibodies (60%) was found in neonates in the first days of life. At the age of 6 to 24 months, only 10% of the children were still seropositive. At this time the maternal antibodies were no longer important. In late adult life, 57% of those examined possessed antibodies against the virus. An attempt was also made to isolate the cytomegalovirus from the urine of 157 healthy persons. This isolation was only possible in three apparently healthy infants aged from 3 to 12 months.

Adolescent↗
PubMed1978

[Cerebral damage and cytomegalovirus infection (author's transl)].

Serological tests were performed on 58 children with microcephalus and 223 children with cerebral damage but no microcephalus (all patients were living in the Munich region). In the microcephalus group 38% had antibodies against cytomegalovirus, while in healthy controls the incidence was only 18%. Mean titre levels were significantly higher in microcephalic children. Of eleven microcephalic children seven were cytomegalovirus excreters: all of the latter had severe cerebral defects. On the other hand, in patients with cerebral damage but no microcephaly there was no difference serologically or with regard to virus excretion from healthy controls. The authors suggest, in conformity with opinions expressed by others, that there is a definite connection between--usually unrecognised--cytometalovirus infection and certain forms of cerebral damage. They may be atypical and symptom-poor diseases in which CNS signs appear only in the course of time.

Antibodies, Viral↗
PubMed1978

[Hepatic disease in childhood and cytomegalovirus infection (author's transl)].

135 children with hepatitis and 179 patients with hepatomegaly of undetermined etiology were investigated for complement fixing antibodies to cytomegalovirus. 69 patients with hepatitis (51%) and 74 patients with hepatomegaly (41%) had a titer of 1:4 or above as compared with a control group of children without hepatic pathology in whom positive response occurred in only 20 resp. 18%. The mean titer found in the sero-positive patients was also significantly higher than that in the control group. In contrast, the incidence of positive sera in newborns with hyperbilirubinemia of unknown etiology did not differ significantly from that in a healthy control collective. Of 57 patients with liver disease, 20 excreted cytomegalovirus which was isolated 55 times from 103 urine specimens. These patients included 9 with hepatitis and 11 with hepatomegaly. Of 129 children without any indication of liver disease, cytomegalovirus could be demonstrated in only 3. Our results point toward a causal connection between the presence of cytomegalovirus and the development of hepatic disease in childhood.

Adolescent↗