Lege Artis Medicinae

[Tuberculosis an immunological perspective]

GERGELY Péter1

MAY 25, 1994

Lege Artis Medicinae - 1994;4(05)

[Tuberculosis is one of the most frequent infections in the world, with at least one third of the world's population carrying the pathogen. The number of active tuberculosis cases is increasing in the industrialized nations. The human immune system is unable to clear M. tuberculosis completely. The immune response in tuberculosis may be summarized as follows: M. tuberculosis is an intracellular pathogen living in the macrophages and evading the cell's effective antibacterial mechanisms. The defense against tuberculosis is a local event, resulting in a labile balance between host and parasite. Bacteria can survive in the tuberculotic granuloma and are prepared at any time to spread the organism in case of defective cell-mediated immunity. Activated macrophages play a pivotal role in the defence against Mycobacteria. The appropriate activation and cooperation of T cells is mandatory to mount a protective immune response. BCG vaccination is inefficient in protecting against adult tuberculosis but does protect newborns from disseminated tuberculosis. New vaccines or vaccination procedures are needed to develop a protective immunity against tuberculosis. ]

AFFILIATIONS

  1. Semmelweis Orvostudományi Egyetem II. Belgyógyászati Klinika Budapest

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Lege Artis Medicinae

[Immunotherapy for tuberculosis clinical aspects of immunological research]

VADÁSZ Imre

[Efforts toward developing an immunotherapy for tuberculosis are based upon the knowledge of delayed hypersensitivity and cellular immunity. The aim of immunotherapy is to strengthen the cellular immunity, enabling the immune system to destroy those persistent bacteria which remain alive following chemotherapy. Chemotherapy combined with an appropriate dose (10%) of dead M. vaccae significantly improved the therapeutic results of tuberculosis patients and reduced their mortality in double blind controlled studies. A beneficial effect was also observed in the treatment of chronic, multidrug resistent cases and in HIV positive tuberculosis patients. The duration of chemotherapy can be considerably shortened when concurrent immuno therapy is utilized.]

Lege Artis Medicinae

[Color and pulsed doppler velocimetry of the uterine artery in the second part of the normal pregnancy]

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[Color Doppler imaging allows accurate identification of the main uterine arteries, which reflect the sum of the resistance of the placental bed and are therefore more likely to provide an overall picture of placental perfusion. In a cross-sectional study of 231 healthy women with singleton pregnancies at 19–40 week's gestation, color Doppler imaging was used to identify the main uterine arteries for subsequent pulsed Doppler studies. Flow velocity waveforms were obtained and indices of impedance, peak systolic blood velocity and mean blood velocity were measured. Impedance to flow decreased, whereas blood velocity increased significantly with gestation. Furthermore, impedance to flow was lower and velocity higher in the placental uterine artery (closest to the main bulk of the placenta) than in the non-placental artery. The changes in the uterine blood flow during normal pregnancy provide indirect evidence for the increase of the maternal blood supply necessary for normal intrauterine development. Definition of the reference ranges of parameters used to characterize blood flow velocity wave forms has an importance in the investigation of complicated pregnancies. ]

Lege Artis Medicinae

[Correspondence]

FENYVESI Tamás

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Lege Artis Medicinae

[Epidemological findings of inflammatory bowel diseases in borsod county 1963-1992]

NAGY György, ÚJSZÁSZI László, JUHÁSZ László, MINIK Károly

[The epidemiologic data of inflammatory bowel diseases and the clinical aspects of ulcerative colitis and Crohn's disease were evaluated among the 800 000 inhabitants of Borsod County during three decades. Inflammatory bowel disease cases were continuously gathered from all the hospitals in the county. Patients were examined by standard diagnostic criteria. Consultative endoscopic advice, follow-up, and drugs prescription were provided on the wards. Patients' data were systematically registered and summarized. The following data were recorded: the patients' age, sex, ethnic group, urbanization; family prevalence, anatomical extension, type of course, severity of disease, and the occurance of malignant transformation. The authors registered 913 patients with inflammatory bowel disease, in the 10 hospitals of Borsod County between 1963 and 1992. 488 cases of ulcerative colitis were detected during the first twenty years, which is an incidence rate of 3.1/ 100,000 per year. The incidence during the third decade was 3.6/100,000 per year. 69 patients with Crohn's disease were examined during the first 20 years, and 78 in the third decade. The incidence of ileocolonal Crohn's disease increased from 0.43 to 1.00/100,000 per year. The authors didn't find a significant change in anatomical extension, severity or the clinical course of ulcerative colitis during the three decades. The increase of Crohn's diseases, and especially of isolated colonic types, may reflect improved diagnostic techniques. The incidence of inflammatory bowel disease increased among gypsies, but the incidence in that population was still only half of what was expected in the region. The authors found familial inflammatory bowel disease occurrence in 15 patients. Eight carcinomas were observed in the 766 ulcerative colitis patients, and 2 in the 147 Crohn's disease patients. ]

Lege Artis Medicinae

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PÁPAI Zsolt, SZIMA Barna, KISS Katalin, KIS Sándor, STRAUSZ János

[The authors studied histologically verified, benign endobronchial tumours. Twenty seven tumours were discovered in our department in a 3 year period and 3 of them were surgically removed. From the group of 24 tumours unresectable for tehcnical or clinical reasons, 21 were endoscopically removed. During the follow-up tumour recurrence has not been observed. Most of the clinical symptoms improved significantly following tumour resection. These findings suggest that in well-defined cases, benign endobronchial tumours should be resected bronchologically. ]

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Lege Artis Medicinae

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Clinical Neuroscience

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