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Biomedical subjects

I Balogh

Publications and source records attributed to I Balogh.

At least 55 records · Page 3Linked to original sources
PubMed1996

Granulomatous hypophysitis associated with Takayasu's disease.

We report a case of Takayasu's disease, presenting with symptoms of fever, anaemia, elevated erythrocyte sedimentation rate, anterior pituitary failure and mild diabetes insipidus. A pituitary mass with suprasellar extension mimicking a pituitary adenoma was found, and histological examination revealed granulomatous hypophysitis. The diagnosis of Takayasu's disease was established after the development of a multiple arterial occlusive disease. We suggest that Takayasu's disease should be considered in the differential diagnosis of granulomatous hypophysitis of unknown origin.

Blood Sedimentation↗
PubMed1996

Presence of STA gene sequences in brewer's yeast genome.

STA genes are responsible for producing extracellular glucoamylase enzymes in Saccharomyces cerevisiae var. diastaticus. These genes exist in three forms, which are located on three different chromosomes. The nucleotide sequences of the STA genes are highly homologous. A sporulation-specific glucoamylase gene called SGA1 exists in every Saccharomyces cerevisiae strain, this also having a partly homologous DNA sequence with the STA genes. In this study S. cerevisiae var. diastaticus and brewer's yeast strains were characterized by pulsed-field gel electrophoresis. In many cases chromosome length polymorphism (CLP) was found. The chromosomes were hybridized with a DNA probe which was homologous with STA genes and the SGA1 gene. Presence of the SGA1 gene was detected in each strain used. Four brewing yeasts were found to have homologous sequences with the STA3 gene on chromosome XIV despite the fact that these strains were not able to produce extracellular glucoamylase enzyme.

Chromosomes, Fungal↗
PubMed1996

Segregation of yeast polymorphic STA genes in meiotic recombinants and analysis of glucoamylase production.

Hybrid yeast strains were constructed using haploid Saccharomyces cerevisiae and Saccharomyces cerevisiae var. diastaticus strains to get haploid meiotic recombinants having more than one copy of STA1, STA2, and STA3 genes. STA genes were localized on the chromosomes by pulsed field gel electrophoresis. Working gene dosage effects were found among STA genes in liquid starch medium, indicating low levels of glucose repression. Growth of strains, however, was not influenced by their STA copy number.

Chromosomes, Fungal↗
PubMed1996

Detection of potential cytokine gene(s) in an Alu-PCR library from the human chromosome 4.

Jumping and linking libraries have been constructed in order to have more information of chromosome 4. Two types of jumping libraries (Not I and Xma III jumping) and one linking library were prepared. The jumping clones represent DNA regions between two rare-cutting enzymes sites (such is Not I or Xma III) whereas linking clones represent only the area which surrounds the rare-cutting site. These clones were used as target DNA in Alu-PCR. The Alu-PCR fragments were cloned into pGEM-T vector and transformed into Escherichia coli JM 109 competent cells. The colonies were screened for inserts by restriction analysis. More than 50% of the colonies were shown to contain inserts. Inserts from each library were screened by PCR. One of the jumping libraries appeared to have inserts containing CpG islands and AT-rich sequences.

Chromosomes, Human, Pair 4↗
PubMed1995

Repetitive industrial work and neck and upper limb disorders in females.

A cross-sectional study was performed in which physical examinations of the neck and upper limbs were conducted on 82 currently working female industrial workers with exposure to repetitive work tasks and on 64 currently working referent subjects without exposure to repetitive work tasks. Associations between results of symptom questions and physical examination were sought with variables related to the work environment and to the individuals. In a multivariate model, there were statistically significant associations between exposure to repetitive work and diagnoses in both the neck/shoulders (prevalence odds ratio, POR = 4.6) and elbows/hands (POR = 3.5). In addition, age (POR = 1.9, 75th vs. 25th percentiles), tendencies towards subjective muscular tension (POR = 2.3), and stress/worry (POR = 1.9) were also associated with diagnoses in the neck/shoulders; however, there was not an association between these variables and the prevalence of diagnoses in elbows/hands. Standardized evaluation of videotape recordings in 74 of the industrial workers revealed significant associations between neck flexion, and elevation and abduction of the arm and the prevalence of neck/shoulder diagnoses. In the multivariate model, neck flexion was significantly associated with diagnoses in the neck/shoulders (p = 0.005). In addition, low muscle strength, lack of emotional well-being at work, and a variety of psychosomatic symptoms were associated with diagnoses in the neck/shoulders (all p < 0.001). Lack of strength was also associated with disorders of elbows/hands (p = 0.007). This study demonstrated a substantial prevalence of neck and upper limb disorders associated with repetitive work performed with a flexed neck and elevated and abducted arms, as well as a possible potentiation of these ergonomic factors by certain personal traits in some workers.

Adult↗
PubMed1995

Cardiac ultrastructural effects of the platelet-activating factor and its antagonist BN 52021.

Platelet-activating factor-induced ultrastructural changes of myocardium were examined in isolated perfused guinea pig heart. The platelet-activating factor (10(-9)-10(7) M) caused the following electron microscopic changes: a) dilated capillaries filled with platelets and aggregated platelets. The endothelial cells adjoining the platelets remained uninjured but pericapillary oedema was observed. b) in the myocardium intracellular oedema, myofibrillar alterations, decrease of matrix density and rupture of crest in mitochondria can be seen. c) Ca2+ deposits in the cytoplasm increased and appeared in mitochondria, too. d) the intramitochondrially localised cytochromoxydase and succinic dehydrogenase activities were decreased. e) using lanthanum tracer permeability alterations were observed. Pretreatment with BN 52021 (10(6) M) completely prevented the morphological effects of the platelet-activating factor. From these results we conclude that the platelet-activating factor-induced vascular and ischemic like cellular damage appear to play an important role in the pathophysiology of myocardial ischemia.

Animals↗
PubMed1995

Effects of lead and mercury on histamine uptake by glial and endothelial cells.

The effects of lead and mercury on [3H]-histamine uptake by cultured astroglial and endothelial cells of rat brain were studied. Experimental data showed that both metal ions inhibited the uptake in both cell types of concentrations as low as 1-10 microM. The effects were consistent with non/competitive inhibitions. With either lead or mercury exposure, the inhibition of the uptake was greater in astroglial than in cerebral endothelial cells. Contrary to the above findings, 100 microM of mercuric chloride produced stimulation of histamine uptake and this stimulation was much more pronounced in cultured cerebral endothelial cells than in astroglial cells. Inhibition of [3H]-histamine uptake by lead acetate and mercuric chloride was considered to be association with a loss of the transmembrane Na+ and/or K+ gradient while stimulation of the uptake by high concentration of mercury might be related to a direct effect on histamine transporter. It is noteworthy, that cultured astroglial cells, derived from neonatal rat brain, are much more sensitive to the toxic effects of these heavy metal ions than cultured endothelial cells derived from the brain capillaries of the same species of animals.

Animals↗
PubMed1994

[Effect of calcitriol, a vitamin D compound, in bone disease associated with distal renal tubular acidosis].

In a 47-year-old female patient distal renal tubular acidosis (dRTA) led to the development of osteomalacia following 13 years of the first episode of hypokalemic respiratory paralysis and 7 years of KHCO3 treatment. In spite of the musculoskeletal disability, intense bone pain and myopathy, the values of serum calcium (Ca++) and phosphorous (P) showed minimal deviation from the normal levels. The bone scintigraphy was the first indicator of the bone disease. As the disease progressed the serum level of alkaline phosphatase increased gradually and 25-hydroxyvitamin-D level decreased and bone scintigraphy showed multiple areas of increased radioisotope uptake. By that time the patient's condition deteriorated severely, she became almost unable to walk. Rocaltrol (calcitriol) therapy led to dramatic clinical improvement and the complete resolution of the laboratory values. When the alkaline therapy of dRTA does not prevent the development of osteomalacia, administration of a modern vitamin-D preparation can result complete healing of the bone disease.

Acidosis, Renal Tubular↗
PubMed1994

Disorders of the neck and upper limbs in women in the fish processing industry.

OBJECTIVE: The aim was to study the association between personal factors and physical and psychosocial work environment factors and disorders of the neck or upper limbs among women in the fish processing industry. METHODS: A cross sectional study was performed on 206 women in the fish processing industry and 208 control women. Several physical and psychosocial work environment factors were evaluated. Subjective complaints about the neck or upper limbs were assessed by questionnaire and by a clinical examination. RESULTS: The study showed a high prevalence (35%) of diagnoses in the neck or shoulders of the exposed women. All prevalence odds ratios (POR's) were substantially higher in young women. There was a pronounced dose-response relation between disorders of the neck or shoulders and duration of employment for women < 45 years old. When studying 322 former workers, the proportion who claimed musculoskeletal complaints as the reason for leaving was highest among the older women. Muscular tension, stress or worry, work strain, and the largest fraction of the work time spent with highly repetitive work tasks were clearly associated with disorders of the neck or shoulders. The measurements of the wrist movements also showed that the work was performed almost without any pauses and that the median flexion and extension velocity was high (41 degree/s). The results of observation showed good agreement with the measurements of wrist motion. CONCLUSION: Work in the fish processing industry is a risk factor for disorders of the neck and upper limbs. Due to the homogenity of the physical work load in the exposed group, we could not show any associations between the objective measurements and disorders. In cross sectional studies the risk may be underestimated due to a healthy worker effect.

Adolescent↗
PubMed1993

[Unusual ultrasonic image of the gallbladder].

It often occurs during ultrasonography, that the gallbladder is not visible. The cause of this is most frequently cholelithiasis, but one must know the less common causes as well. Authors review the characteristic reasons and give accounts of their own experience, which was gained in the course of more than 60,000 examinations.

Cholelithiasis↗
PubMed1992

[Three decades of roentgen-diagnosis of the upper digestive tract in the light of modern endoscopy].

The author commemorating professor Géza Hetényi, discusses the relation of endoscopy and x-ray diagnostic. He observes that the spreading of recent fibre optical endoscopes did not solve the problem of the early gastric cancer diagnosis. The experiences of the author based on his practice for several decades, data from the literature and, especially, the Japanese results show that x-ray did not lose its position but rather strengthened it in the diagnostics of the upper gastrointestinal tract. For examinations at identical levels, both diagnostic methods have equal opportunities to reveal gastric cancer at an early stage. In accordance with the type variety of early gastric cancer, the author discusses the relationship between early gastric cancer and gastric ulcer, and he proposes a rational algorithm for its diagnosis and follow-up. He shows that the most effective method for the diagnosis of the upper gastrointestinal tract is a reasonable combination of all available methods, and "primus inter pares" of them is x-ray examination, in addition to endoscopy.

Digestive System Diseases↗
PubMed1992

[Surgical cerclage in the treatment of cervical incompetence during pregnancy (determining the legitimacy of the procedure)].

The authors studied the effectiveness of the cervical cerclage operation in the therapy of cervical insufficiency during the pregnancy. Two Hundred sixteen pregnant women took part in this trial in whose pregnancy the necessity of cerclage operation was not unequivocal. It means, that the therapeutical cerclage operation was not necessary, but the necessity of prophylactic cerclage operation was doubtful as well. From the randomized 216 cases they performed cerclage operation in 108 pregnancies and in 108 cases they did not perform it. In the respect of pregnancy care they did not make any difference between the two groups. The authors from their trial draw the conclusion, that in doubtful cases where the necessity of cervical cerclage operation is not unequivocal--e.g. at serious gestational case history--it is advisable to perform the operation. The danger of premature birth can be diminished in this way.

Female↗
PubMed1992

[Water enema in colonic ultrasonography].

The transabdominal ultrasonography has less importance in the diagnosis of colonic tumors. To increase the diagnostic efficiency, the authors examined the colon with ultrasound - during water enema. They found 5 tumors and 4 polyps from 85 patients. They found, that this method is suitable for the intraluminal tumors' diagnosis. They want to investigate the other changes of the intestinal wall in the future.

Adult↗
PubMed1992

Electromyographic fatigue in neck/shoulder muscles and endurance in women with repetitive work.

EMG was recorded with surface electrodes from the trapezius and deltoid muscles during a static endurance test at approximately 20% of maximal voluntary contraction. Objective parameters for localized muscular fatigue were derived from the time course of the root mean square (RMS) and mean power frequency (MPF) of the EMG recordings. Isotonic regression is introduced as a tool for assessment of such parameters. The most pronounced sign of fatigue for trapezius was an increase in the RMS values, while for deltoid it was a decrease in the MPF values. This could be explained by the different functions of the two muscles. The endurance time for a group of 11 women in industrial work with repetitive short-cycled work tasks who were diagnosed with neck/shoulder disorders (tension neck) was significantly shorter (p less than 0.05) than for a group with the same work, but without neck/shoulder disorders (n = 11), and shorter than for a control group (n = 11). Regarding the EMG fatigue measures, there were no significant differences between the three groups. We did not find any relationships between endurance time and the EMG parameters. The results indicate that neck/shoulder disorders were not associated with divergent mechanisms for developing fatigue in the muscles, as recorded with surface EMG.

Adult↗