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Biomedical subjects

M Shkurovich

Publications and source records attributed to M Shkurovich.

6 recordsLinked to original sources
PubMed1990

Praziquantel treatment of porcine brain and muscle Taenia solium cysticercosis. 1. Radiological, physiological and histopathological studies.

Porcine Taenia solium cysticercosis, recognized as a model of the human disease, was used to analyze the effect of the anthelminthic drug praziquantel on hosts and parasites. The drug (50 mg/kg daily) was given over 15 days in the feed of 13 cysticercotic and 9 control pigs. Changes in the number, size and appearance of brain parasites were seen by computerized tomography immediately after the last dose of praziquantel, although not all cysticerci had disappeared by day 47 following the end of the treatment. Muscle parasites became small and hyperdense shortly after treatment and disappeared from tomographic images afterwards. No alterations were found in EEGs or in brain-stem auditory and somatosensory evoked potentials. Muscle cysticerci showed increasing degrees of degeneration with time after treatment, and an augmented inflammatory reaction was concomitantly observed. In contrast, more heterogeneous results were obtained in parasites lodged in the brain, since viable cysts and less intense inflammatory reactions were found in the brain at different times after treatment. Physiological evaluation of the parasites showed that evagination was inhibited immediately after treatment and that oxygen consumption decreased with time. The results of this investigation suggest that praziquantel damages cysticerci and that the inflammatory reaction destroys and eliminates them.

Animals↗
PubMed1989

Swine cysticercosis treated with praziquantel, a short report.

Swines with cysticercosis are a useful model to study human disease. A multidisciplinary approach was undertaken to study in detail the effect of praziquantel treatment on hosts and parasites. Computerised tomographic scans showed changes in the number and size of parasites in treated pigs. These changes were more apparent in muscle than in brain cysticerci. Neurophysiologic data were normal in cysticercotic pigs before and after drug treatment. An increase in antibody response was seen immediately after treatment regarding the amount of antibodies and number of antigens recognised. A lower number of polyploid lymphocytes was seen after treatment in cysticercotic pigs as compared to untreated pigs. At different times after treatment pigs were humanely euthanised. Oxygen consumption rate of cysticerci decreased after treatment and evagination was abolished. The inflammatory reaction that surrounded parasites increased in number and type of cells. This was more apparent around cysticerci obtained from muscle than from the brain.

Animals↗
PubMed1978

Abnormal auditory evoked potentials in early infancy malnutrition.

Computer-averaged auditory evoked potentials were found to be abnormal in infants hospitalized because of severe malnutrition (marasmus). They improved as the infants' somatic growth improved during the course of treatment, but were still deviant at the time of discharge from the hospital and at subsequent outpatient follow-up. Abnormalities in evoked potentials may reflect a long-lasting effect of malnutrition on brain function.

Auditory Cortex↗
PubMed1975

Hypothalamic-pituitary-gonadal function in patients with myotonic dystrophy.

Gonadal function was studied in three post-pubertal siblings (two male and one female) and one unrelated male patient with myotonic dystrophy. The diagnosis was confirmed in all cases by electromyography and muscle biopsy. Basal levels of plasma immunoreactive LH, FSH, testosterone, and estradiol were measured. Hypothalamic, pituitary, and gonadal reserve and responsiveness were evaluated by clomiphene, LHRH, and HCG tests. Histologic examination of gonadal biopsies was also performed. The results showed that gonadal failure present in the four patients had different characteristics. In the same family, hypothalamic amenorrhea was observed in the female patient, and hypothalamic eunuchoidism and hypergonadotropic hypogonadism with marked tubular and leydig cells failure in the male patients. The non-related male patient had hypergonadotropic hypogonadism with tubular failure but with a compensatory leydig-cell hyperplasia. These data are interpreted as demonstrating different expressivity of the hypogonadism associated with the same inherited muscle disease.

Adult↗
PubMedDate not supplied

[Sudden infant death syndrome].

This report is based on a review of the present situation of the sudden infant death syndrome through the presentation of four cases studied at the Unidad de Pediatría, Hospital General de México, S.S.A. All cases were in apparent good health before death. All babies were less than ten months of age. In three cases, necropsy was not performed, and the other one did not show significant abnormalities at the post-mortem examination. A complete review of the literature was made including: historical, epidemiological, genetic, clinical and pathological aspects. Special emphasis is made on the pathophysiology of the syndrome during MOR phase of sleep and muscular hypertrophy of the lungs arteriolae suggesting chronic hypoxia which are the most relevant theories in the sudden infant death syndrome. Psychological aspects and the family management by the physician and detection of possible future victims of the syndrome are finally discussed.

Age Factors↗