Biomedical subjects

E Rogala

Publications and source records attributed to E Rogala.

At least 19 recordsLinked to original sources

PubMed2006

Is hypothermia a benefit? Von Willebrand factor in pediatric cardiopulmonary bypass.

AIM: The use of cardiopulmonary bypass (CPB) is associated with the risk of development of postpump syndrome. Thrombocyte activation leads to microembolism, endothelial damage and necrosis with release of various substances, such as the von Willebrand factor (vWf). High levels of vWf increase the risk of postoperative complications and mortality. Our objective was to find a correlation between CPB and plasma levels of vWf in pediatric patients operated on for congenital heart defects. METHODS: Twenty patients with congenital heart defects (ventricular septal defect, atrial septal defect/partial anomalous pulmonary vein drainage, Bland White Garland syndrome) were operated on with the use of CPB. The arterial blood was sampled after induction of anesthesia, 5 minutes after commencing CPB, 1 hour and 3 hours after surgery. The plasma levels of vWf were measured and compared to selected clinical findings. RESULTS: There was no early mortality. There were no significant differences in CPB and aortic cross clamp times when compared in patients with various defects. vWf plasma levels were significantly elevated in all patients 1 hour and 3 hours after surgery. We found no correlation between vWf levels and type of defect, CPB duration, aortic cross clamp as well as reperfusion time. However, we were able to demonstrate that the observed elevation of vWf levels was almost 4-fold higher in patients cooled down to lower temperatures (15 patients; mean rectal value 27.64+/-0.7 degrees C) than in 5 patients (mean rectal temperature 30.74+/-1.56 degrees C) where only slight elevation was found. There were no differences in the postoperative course of these patients. All patients were discharged from hospital 10+/-3 days after operation (mean value 9 days). CONCLUSIONS: vWf plasma levels are significantly elevated after pediatric hypothermic CPB. It seems that the augmentation of vWf values could be independently associated with rate of hypothermia.

Adolescent↗

PubMed2004

Immunomodulatory effect of shikonin derivatives isolated from Lithospermum canescens on cellular and humoral immunity in Balb/c mice.

The immunomodulatory activity of acetylshikonin (ACS) and isobutyrylshikonin (IBS) was studied in female and male inbred Balb/c mice, and in F1 hybrids (Balb/c x C3H). ACS and IBS were isolated from Lithospermum canescens Lehm. (Boraginaceae) roots. Splenocytes from mice fed 40 microg of ACS had higher proliferative potential in cultures with PHA than corresponding controls and also higher migratory in vitro activity than splenocytes obtained from control animals. ACS at a 40 microg daily dose stimulated G-v-H reaction but inhibited it at a 200 microg dose. IBS at a 40 microg dose significantly increased humoral response.

Adjuvants, Immunologic↗

PubMed2004

Multiple effects of theobromine on fetus development and postnatal status of the immune system.

Caffeine and its active derivative, theobromine, are probably the most frequently ingested pharmacologically active substances. Considering their uninhibited transport via the placental barrier as well as immature enzymatic activities and metabolic pathways in embryos and infants resulting in the longer half-life of methyloxanthines and their accumulation, unrestrained uptake of these substances might result in noticeably more pronounced biological effects during pregnancy and the postnatal period. Our previous studies have shown that methyloxanthines are significant inhibitors of angiogenic growth factors production and angiogenesis itself. We have hypothesized that increased uptake of these substances might affect embryonal angiogenesis and, later in the postnatal period, maturation and functional activity of the offspring's immune system. The study was performed on 2-month-old Balb/c mice fed theobromine 2 or 6 mg/day during pregnancy and lactation. On day 18 of pregnancy the number and weight of embryos were assessed as was their tissue angiogenic activity, using the cutaneous angiogenesis assay. In the group of 4-week-old sucklings, body and spleen were weighed together with the trunk, and tail and limb length were measured. Six weeks after birth the splenocytes' mitogen-induced activity and their ability to induce graft-versus-host reaction as well as the humoral response to SRBC antigen were evaluated. Content of theobromine in the embryos' tissue was estimated by high liquid performance chromatography (HPLC). Theobromine feeding resulted in significant inhibition of embryo growth as assessed by their weight and decreased angiogenic activity of their tissue. The theobromine content in embryo tissue from treated groups was higher than in the controls, and the difference was close to significant. In the postnatal period the discrepancies in the treated 4-week-old group's development were also observed in the significantly shorter limbs in comparison to the controls. Moreover in the treated group of 6-week-old sucklings, considerable variations in the immune system's functional activity were registered as far as cellular and immune response were concerned. Respectively, the splenocytes' mitogen-induced proliferative activity was significantly suppressed while the graft-versus-host reaction was up-regulated, and the serum antibodies titer was elevated in correspondence to the observed spleen enlargement. We concluded that a theobromine-enriched diet affects progeny development in both prenatal and postnatal periods. Consequently, particular attention should be paid to the reduction of theobromine consumption, and most probably that of other methyloxanthines, during pregnancy and lactation.

Angiogenesis Inhibitors↗

PubMed2003

The influence of Eleuterococcus senticosus on cellular and humoral immunological response of mice.

The influence of Eleuterococcus senticosus on cellular and humoral immune response was evaluated. The experiments were performed on animal models (Balb/c mice and F1 crossbreeds Balb/cxC3H). It was shown that Eleuterococcus has immunomodulatory properties. This substance enhanced the cellular response of the mouse immunological system (chemokinetic activity of mice spleen cells, GvH reaction). A stimulatory effect of Eleuterococcus on the humoral response (antibody production) was also observed. Eleuterococcus did not augment the angiogenic activity of human renal carcinoma cells.

Adjuvants, Immunologic↗

PubMed2003

Inhibitory effect of Greenland shark liver oil combined with squalen and arctic birch ashes on angiogenesis and L-1 sarcoma growth in Balb/c mice.

Sharks have been claimed to be resistant to cancer and oil from their livers have been used in Scandinavian folk medicine as anti-tumor drug. Shark liver oil contains 40% or more of squalene. Fish liver oil is also rich in squalene and polyunsaturated n-3 fatty acids. The aim of this work was to determine the anti-angiogenic and anti-tumor effects of these substances, together with another Scandinavian traditional remedy--arctic birch ashes--in Balb/c mice after transplantation of syngeneic L-1 sarcoma. All substances tested, alone or in combinations, significantly diminished cutaneous angiogenesis induced by tumor cells, and tumor growth.

Animals↗

PubMed2003

Chocolate feeding of pregnant mice influences length of limbs of their progeny.

UNLABELLED: We previously reported the inhibitory effect of various methyloxantines and phenolic compounds on tumor-induced angiogenesis and the production of angiogenic growth factors. The aim of the present work was to evaluate the effect of chocolate (CH), food containing substantial amounts of methyloxantine theobromine and polyphenols (mainly catechins), given to mice during pregnancy and the lactation period, on weight of organs, length of limbs, and bone vascular endothelial growth factor (VEGF) concentration (tested by ELISA), in 4-week old offspring. The study was performed on 2-month old Balb/c mice fed during pregnancy and lactation 400 mg of CH daily. Content of polyphenols (catechines) and theobromine in the chocolate was estimated by high liquid perforance chromatography (HPLC). Concentration of VEGF was tested by ELISA. Feeding pregnant mice chocolate produced the following effects: decrease of relative length of limbs and thigh bones in 4-week old progeny and decrease in VEGF content of offspring femoral bones. CONCLUSION: attention should be paid to possible unwanted effects of catechine- and methyloxantine-rich food and beverages during pregnancy and lactation. 200 mg of chocolate per mouse corresponds to 100 g per person.

Administration, Oral↗

PubMed2001

[The effect of small cell lung cancer extension on secretion of interleukin-2 (IL-2) and interferon gamma (IFM gamma) in whole blood culture stimulated with mitogens].

The aim of this study was to assess the role of SCLC extension on II-2 and IFN gamma secretion in whole blood cell cultures stimulated with mitogens. Material consisted of 42 SCLC patients, 19 with extensive and 23 with limited disease. In 22 patients partial or complete regression of tumour occurred after treatment. There was a tendency to lower II-2 and IFN gamma secretion before treatment in patients with extensive disease in comparison to those with limited lesions but this was not statistically significant. The ability to secrete cytokines in 22 patients after partial or complete regression of tumour decreased or increased but median values after treatment were not statistically different from those before treatment.

Adult↗

PubMed2001

Angiotensin-converting enzyme activity and angiomodulatory effects of sera in patients with diabetic retinopathy.

Aberrant neovascularization plays a crucial role in ocular complications in diabetic patients. Sera from these patients contain high levels of angiostimulatory factors, the most important of which is vascular endothelial growth factor (VEGF). Many authors have described elevation of angiotensin-converting enzyme (ACE) activity in the sera of diabetic patients. It is important to determine the possible relationship between these two phenomena. We studied ACE serum activity and VEGF concentrations in patients with type 1 and type 2 diabetes and retinopathy We also investigated the effect of their sera on cutaneous angiogenesis induced in mice by grafting healthy human mononuclear blood leukocytes. We found a negative correlation between the angiostimulatory effect and ACE level in the sera of patients with type 1 diabetes and no correlation between these two parameters in patients with type 2 diabetes. VEGF concentrations were lower and ACE activity was significantly higher in the sera of patients with type 1 diabetes than in the sera of those with type 2 diabetes.

Adult↗

PubMed1999

[The evaluation of atrial natriuretic peptide and endothelin in serum of the patients with non-atopic bronchial asthma during exacerbation].

The aim of the study was to evaluate concentrations of atrial natriuretic peptide (ANP) and endothelin in blood serum of the patients with nonatopic bronchial asthma in the exacerbation phase and during non-symptomatic period. The study included 20 patients with nonatopic bronchial asthma (10 women and 10 men, mean age 34.2) treated in the Allergological Outpatient Clinic in Zabrze (Poland). A control group consisted of 5 healthy volunteers without atopy. The study consisted of evaluation of the ANP and endothelin in blood serum by radioimmunoassay and by functional respiratory tests. It was shown that ANP concentrations during bronchial asthma exacerbation were two times lower than in the same group examined in the remission phase (7.8-13.7 pmol/ml, p < 0.05). At the time of bronchospastic symptoms occurrence, the concentrations of endothelin were statistically significant and higher than in the non-symptomatic group (11.6-6.9 pmol/ml, p < 0.05). In the examined group the reverse proportion relation between concentrations of the studied peptides in blood serum was observed r = -0.56, p < 0.05 according to Spearman test.

Acute Disease↗

PubMed1999

[Secretion of interleukin-2 (IL-2) and interferon (IFN gamma)in whole blood cell culture stimulated with mitogens in patients with lung neoplasms].

UNLABELLED: The aim of this study was to compare the ability of blood lymphocytes from lung cancer patients to secrete interleukin-2 (IL-2) and interferon gamma (IFNg) upon stimulation with mitogens with that of healthy donors. 42 patients with small cell lung cancer (SCLC), 30 patients with non small cell lung cancer (NSCLC) and 30 healthy donors were studied. The test was done in lung cancer patients before treatment. IL-2 and IFNg levels were measured with Elisa ready kits (Genzyme) in the supernatants of whole blood culture after stimulation with Pokeweed (PWM) and Phytohemagglutinin (PHA) mitogens. The results of the cytokine levels after stimulation were not normally distributed and thus were transformed to logarthms for statistical evaluation. The t-test for transformed results were used to asses the difference between groups. The median level of IFNg in the supernatant of whole blood cultures was significantly lower in lung cancer patients than in healthy blood donors both after PWM as well as after PHA stimulation. When patients with NSCLC and SCLC were regarded separately the lower level of IFNg in comparison with healthy donors was found in the supernatant of the blood cultures only after stimulation with PWM. The median level of IL-2 in the supernatant of whole blood culture in lung cancer patients was lower than in healthy blood donors only after PWM stimulation. The same was true for SCLC patients. In NSCLC IL-2 levels were significantly lower after stimulation with PWM as well after PHA stimulation. IN CONCLUSION: secretion of IL-2 and IFNg in whole blood culture after mitogen stimulation in lung cancer patients is significantly lower than in healthy donors. No significant differences between SCLC and NSCLC were found.

Adult↗

PubMed1998

The effect of salbutamol treatment on the cellular immunity of the offspring of pregnant mice: spleen cell activity.

Preterm delivery is one of the greatest problems in obstetric care. One of the most commonly used treatments for high risk cases is salbutamol, a beta-2-adrenoceptor agonist. The aim of the present study was to determine if such treatment causes any changes in the neonatal immune system which should therefore be a concern in the care of the newborn. The experiments were performed on 4 to 5 or 6 to 7-week old female and male offspring of salbutamol-treated C3H/W inbred mice. In the first part of the study, the number of spleen cells, phenotypes and activity (phytohemagglutinin-induced proliferation, ability to induce local graft versus host reaction) were determined. We observed lowering of cell number and lowered proportions of cluster of differentiation (CD)3, CD4 and CD8 positive lymphocytes in spleens of progeny of salbutamol-treated mice. However, CD4+ to CD8+ ration was higher in the progeny of salbutamol-treated mothers than in the corresponding controls. In addition, reactivity to phytohemagglutinin and ability to induce local graft vs. host reaction were higher (popliteal lymph node test) or undisturbed (lymphocyte-induced angiogenesis test) in this group of mice.

Adrenergic beta-Agonists↗

PubMed1997

[Secondary osteoporosis in patients with steroid-dependent asthma].

The aim of the trial was estimation of frequency and degree of osteoporosis in steroid-dependent asthma patients (48 persons: 18 men and 30 women). Control group created 36 healthy persons. Following measurements were done: quantitative computed tomography, radiological estimation of thoracic and lumbal spinal column and hands, in serum total alkaline phosphatase, calcium, phosphate, in urine excretion of calcium, phosphate and creatinine. Quantitative computer tomography revealed secondary osteoporosis in 40.5% asthma patients. These results were correlated with estimation of roentgenograms of thoracic and lumbal spinal column and metacarpal measurements and less well with total alkaline phosphatase. Time of duration of steroid therapy and time of asthma had influence on degree of osteoporosis. Moderate development of osteoporosis is probably the result of low dose of steroids.

Adult↗

PubMed1997

[Levels of endothelin-I in bronchoalveolar fluid of patients with selected respiratory tract diseases].

UNLABELLED: Endothelin-I (ET-I) levels in BALF of symptomatic (n = 7) and asymptomatic (n = 10) asthmatic patients, sarcoidosis (n = 10), allergic alveolitis (n = 6) and healthy volunteers (n = 6) was evaluated. In all patients BALF level of endothelin-I was assessed by radioimmunoassay. We observed that patients with symptomatic asthma had more increased amounts of ET-I in BALF in comparison with asymptomatic asthmatics, patients with sarcoidosis, allergic alveolitis and control group. CONCLUSIONS: 1. Presence of ET-I in BALF indicates that this peptide is involved in the pathogenesis of bronchial asthma, sarcoidosis and allergic alveolitis. 2. Endothelin-I is involved in bronchial smooth muscle contraction.

Adult↗

PubMed1996

[Bradykinin levels in BAL fluid in patients with sarcoidosis].

In 14 patients with sarcoidosis and in 9 healthy controls the bradykinin level was estimated in broncho-alveolar lavage fluid. The statistically significantly higher bradykinin concentrations was found in sarcoid patients than in controls. No relationship was found between level of bradykinin in BAL and lymphocytes % and no relationship was found between bradykinin level and pulmonary function parameters.

Adult↗

PubMed1996

[Bradykinin level in bronchoalveolar lavage fluid in patients with extrinsic allergic alveolitis].

The presence of kinins in the tracheobronchial tree and their pharmacological properties would suggest that these peptides are involved in inflammatory responses of the airway and lungs. The aim of the study was the estimation the bradykinin level in bronchoalveolar lavage fluid (BAL) in patients with extrinsic allergic alveolitis. The investigated group consisted of 12 patients with farmers lung and a control group, of 9 healthy individuals. The statistically significant higher bradykinin concentration was found in patients BAL fluid than in the controls (675 +/- 472 pg/ml v.s., 220 +/- 57 pg/ml). No relationship was found between bradykinin level and BAL fluid cellularity and pulmonary function parameters. High levels of bradykinin in BAL fluid may suggest the increase of alveolo-capillary membrane permeability.

Adult↗

PubMed1995

[Influence of bacterial infection and formalin vapors on the course of ovalbumin induced experimental bronchospastic reaction in guinea pigs].

The pathomechanism of the bronchospastic reaction is not fully explained. Ovalbumin induced bronchospastic reaction in guinea pigs is widely accepted as a classical experimental model and was appleid in this study. The bronchoconstriction, bronchial hypersensitivity and humoral immune response were measured after bronchial infection and chemical injury by formalin vapours. The intensity of the bronchospasm was measured by Lundberg index, the haemolytic activity of complement and the level of circulating immune complexes were measured at the beginning and at the end of the experiment. The increase of the bronchospastic reaction and bronchial hypersensitivity was observed bacterial infection and after formalin vapours too. Bronchial infection and chemical irritation of bronchial tree lead to the increase of the circulating immune complexes level and to the decrease of the haemolytic activity of the complement.

Animals↗

PubMed1995

[Histology of the respiratory system after exposure to bacterial infection and formalin vapors used to induce experimental bronchospasm].

The purpose of the research was to observe the influence of the bacterial infection and inhalation vapours on the histologic picture of bronchi and lungs in the course on the experimental asthma induced in guinea pigs. The animals were divided into 6 groups. The animals were immunized by ovalbumin. Group I was control and was subjected to inhalations of physiologic salt solutions. Group II was immunized by the soluble of ovalbumin intraperitoneally and was inhaled with the solution of ovalbumin. Group III was subjected only to inhalation of the ovalbumin. Group IV was inhaled with the solution of formalin alternately. Group V experienced only formalin inhalations. Group VI was infected with Pseudomonas aeruginosa strain and inhaled with the solution of ovalbumin. On the histologic examination of the lung tissue the authors found the atrophy of the lymphatic system, the hypertrophy of the mucous membrane and muscular coat of the bronchi, the accumulation of large amount of mucus in their lumen and the exfoliation of the bronchial epithelium.

Animals↗

PubMed1995

[Evaluation of bradykinin levels and activation of Tame-esterase in Bronchial alveolar lavage fluid of patients with bronchial asthma].

Airway inflammation is a prominent feature of chronic airway disease as asthma and chronic bronchitis. Multiply cells released mediators and neurotransmitters which are likely to be involved in their origination. The purpose of this study was to establish the levels of kinin, albumin, TAME-esterase activity in BAL fluid of symptomatic and asymptomatic asthmatic patients and to determinate the relationship among mediators. There were significant increases in the mean concentrations of kinin, HSA, TAME-esterase activity in BAL fluid from patients with asthma, chronic bronchitis, compared with the controls (p < 0.005). Kinin mean concentration was in asthmatics 5313, 2 ng/ml, in chronic bronchitis patients 6796.2 ng/ml, versus 468.1 ng/ml in control group. TAME-esterase activity in investigated group was as follow asthmatics 12666 cmp, CB 15131, 3 cmp, versus 3695, 5 cmp in controls. We observed good correlation of kinin and TAME-esterase with HSA in BAL fluid suggest vascular origin of the mediators. The presence of kinins, TAME-esterase in BALs from symptomatic asthmatics and patients with chronic bronchitis provide strong evidence that kinins are involved in this group of lower airway diseases.

Adult↗