Anthropological and clinical characteristics in adolescent women with dysmenorrhea

The aim of this study was to examine the prevalence of dysmenorrhea in female adolescents and the influence of anthropological characteristics and lifestyle factors on menstrual pain. Two hundred and ninety seven girls from several elementary and secondary schools were interviewed about the presence of the menstrual pain, their age, height and weight, menarcheal age, menstrual cycles quality, smoking and sexual activity. There were 164 (55%) subjects with and one hundred and thirty three (45%) without dysmenorrhea. The adolescents with dysmenorrhea answered the questions about missing activities and taking pills for pain. No difference was observed between the girls with and the girls without dysmenorrhea in their chronological age, height, weight, menarcheal age, menstrual cycles quality, cigarette smoking and sexual activity. In the group of dysmenorrheic adolescents there was infrequent missing activities and bedrest, but missing school was observed in 22 percent and taking pills for pain was observed in 96 percent of the subjects. Young girls who experienced menstrual pain are good candidates for a prophylactic therapy, such as hormonal contraception. A replication of this study is needed for public health services in the future to improve the quality of life of the dysmenorrheic young women.     

Effects of war aggression in Croatia on histopathological manifestations of breast cancer in defined population of one county

The aim of the present study was to determine the differences in epidemiological and clinical manifestations of breast cancer during the war in Croatia and in peacetime. 660 consecutive patients were recorded (656 female and 4 male patients) from Pozesko-Slavonska County. The changes in histopathological features were recorded in war period (1991-1995, 156 patients) and through two control periods, before the war (1981-1990, 282 patients) and after the war (1995-2000, first five months, 223 patients). The relative predictive value was calculated using chi 2-test. The survival was calculated according to Kaplan-Meier analysis of survival. The histopathological analysis showed an equal distribution of noninvasive cancer (in situ cancer) across periods. In the war period, the level of the most common invasive cancer, ductal breast cancer, was lower (57.7%), compared to control periods (71.2%:63.7%:68.2%). Opposite to that, invasive lobular cancer was more common in the war period (3.2%), compared to control periods (0.7%-1.3%). Furthermore, mixed cancer was also increased in the war period (7.1%) compared to control periods (0.7%-2.2%), as was medullar cancer (10.9% vs. 5.5%-5.9%). The study showed statistically significant differences in the survival of patients with different histopathological diagnoses (Log Rank = 47.49, df = 7, p < 0.0001), while the histological grade of tumor, as a predictive factor was not proved to be statistically significant (p > 0.05). This study confirmed the influence of war of war on histopathological incidence of some forms of breast cancer.     

Effects of war aggression in Croatia on some forms and manifestations of breast cancer

The aim of this study was to determine the differences in epidemiological and clinical manifestations of breast cancer in time of war in Croatia and in peacetime before and after the war, in the defined population of Pozesko-Slavonska County. The methods used in this study were the evaluation of relative predictive value of variables by means of chi 2-test and the analysis of variance, while the survival studies were tested by Long Rank test according to Kaplan-Meier analysis of survival. This work encompasses 660 patients who had breast cancer. The differences between three time periods were evaluated: the war period (1991-1995), and two control periods: before the war (1981-1990) and after the war (1996-2000). The patients were grouped by age, localization of tumor and survival. During the war period the patients were, on the average, 4.2 years younger than those who acquired the disease in control periods, and the mean age of patients was between 50 and 59 years (36.5% of patients). Although the difference in tumor distribution by sides (left or right breast) and quadrants was statistically significant (war period vs. control periods; p < 0.001), there was no statistically significant difference in the survival of patients according to the results of Kaplan-Meier analysis of localization of tumor (p > 0.05). The length of survival in terms of age of patients in time of surgical procedure was significantly different (p < 0.001). This study confirms the effects of war on some epidemiological and clinical manifestation of breast cancer in the defined population of Pozesko-Slavonska County.     

Uterine artery embolization for the treatment of uterine fibroids

Uterine artery embolization can be regarded as a less invasive procedure for the treatment of fibroids compared with myomectomy, hysterectomy, and laparoscopic myolysis. The aim of this study was the evaluation of safety and efficacy of uterine artery embolization and of womens' opinion about this treatment. After gynecological examination sixty-nine premenopausal women underwent uterine artery embolization. All procedures but four were technically successful; three women underwent unilateral embolization because of vascular malformation and one of them had an allergic reaction to contrast medium. Of the 69 patients: 58 went home the day after embolization, and 11 within first week. The follow-up examinations after 3, 6 and 12 month showed a significant reduction of uterine and fibroid volume with significant improvement of bleeding. Therefore, according to this report, uterine artery embolization is a successful, minimal invasive treatment of myoma that preserves the uterus and requires shorter hospitalization and recovery times than surgery.     

New approach for the detection of BSH and its metabolites using capillary electrophoresis and electrospray ionization mass spectrometry

Boron neutron capture therapy is a promising binary treatment for cancer. It is based on the nuclear fission that occurs when non-radioactive 10B absorbs thermal neutrons. One of the two boron compounds currently used in clinical trials for this therapy is BSH. To ensure differentiated retention in the tumour versus normal tissue prior to treatment, routine analytical methods to determine pharmacokinetics must be available. For this purpose we have developed a new, easy and time saving approach, in which the separation of boron derivatives is performed by means of capillary electrophoresis (CE). The CE method allows analyses to be performed in short times (less than 18 min), sensitively (LOD 8 pg loaded on the capillary) quantitatively (LOQ 5 microg/ml) and with a high efficiency of separation. Moreover it is simpler than HPLC and more reproducible (intra- and inter-day values were +/-1% and +/-3%, respectively), and does not require a specific column of derivatization. Mass spectrometry analysis of boron derivatives in different samples was also performed to ensure correct attribution of the CE peaks.     

Plasma membrane association and preliminary characterization of Drosophila sperm surface glycosidases

Previous studies have identified β‐N‐acetylglucosaminidase (GlcNAc'ase) and α‐mannosidase activities on the Drosophila melanogaster sperm surface which may have a role in fertilization. The aim of this study was to investigate their linkage to the sperm plasma membrane. We verified that glycosidases are not peripherally adsorbed to the cell surface by evaluating their resistance to release by KI, by buffered salt solutions of high ionic strength or alkaline buffers. Glycosidases were released from the sperm surface by detergents and, only to a minor extent, by mild proteolysis. Differential detergent solubilization pointed out that Triton X‐114 was the most effective releasing agent for GlcNAc'ase and CHAPS for mannosidase. No activity was released from the membrane by a phosphatidylinositol‐specific phospholipase C (PI‐PLC). The released forms were quite hydrophilic in phase separation experiments with Triton X‐114. This finding indicates the presence of a hydrophobic domain limited to a single transmembrane helix or/and the presence of an extensive glycosilation. The use of a Con‐A binding assay demonstrated that both the enzymes are glycosilated. The molecular weight of the released glycosidases estimated by gel filtration was 158 kDa for GlcNAc'ase and 317 kDa for mannosidase. These results suggest that Drosophila melanogaster GlcNAc'ase and mannosidase are mannosylated integral membrane proteins that would function as exoenzymes with their active sites accessible in the extracellular space. Mol. Reprod. Dev. 52:166–173, 1999. © 1999 Wiley‐Liss, Inc.     

Antioxidant properties of bile salt micelles evaluated with different chemiluminescent assays: a possible physiological role

The antioxidant activity of a representative series of free, glycine- and taurine-conjugated bile acids was evaluated by two different chemiluminescent assays: (a) the enhanced chemiluminescence system based on horseradish peroxidase and luminol/oxidant/enhancer reagent, and (b) the hypoxanthine/xanthine oxidase/Fe²⁺-EDTA/luminol system. Bile acids were studied at final concentrations ranging from 1 to 28 mmol/L. All of the bile acids studied inhibited the steady-state chemiluminescent reaction and the extent of inhibition depended upon the structure of the bile acids, whereas the duration was related to bile acid concentration. The mechanism of the light inhibition is probably due to trapping of oxygen free radicals generated in the chemiluminescent reactions, within bile acid micelles. The free radicals trapped into micelles reduced the formation of luminol radicals and consequently the light output; when the micelles were saturated, the oxygen free radicals in solution again produced luminol radicals. The micelle interaction with reactive oxygen species could be a physiological mechanism of defence against the toxicity of those species in the intestinal content. On the other hand, alterations in bile acid organ distribution, concentration and composition leads to a membrane damage caused by their detergent-like properties, which could be associated to oxygen free radical production. © 1998 John Wiley & Sons, Ltd.     

Acute cardiovascular complications due to physical exercise in male teenagers

Five sudden cardiac deaths in male adolescents (age 14-18 years) were detected in a 5-year period in Croatia. Two of them had been engaged in physical exercise at school, one as a professional soccer player, one in recreational swimming, and the fifth had just finished secondary school and was working at the site. All of them were autopsied and in three congenital cardiovascular diseases was found. Two had hypoplastic coronary arteries. The third had hypertrophic cardiomyopathy with interventricular wall of 40 mm. The fourth had normal heart findings including coronaries, but had bilateral pneumonia with a possible altitude (non-cardiogenic) pulmonary edema. The fifth had a chronic myopericarditis with an aneurysm of the left ventricle. All of them had not reported definite symptoms at exertion. According to this data, the death rate in adolescent males in Croatia during or after recreational physical exercise was 1/100,000 per year or 5/500,000 in five years. Thorough preparticipation medical examination including indicated laboratory tests and avoidance of heavy exertion at the time of respiratory infection might have helped to avoid some of the lethal events.     

Integration of aerobic power into the morphological-motor system in children aged 7-11 years

The aim of the study was to analyze integration of aerobic power into other dimensions evaluated. For this purpose, predictor relations of the morphological-motor variables were analyzed with a 3-minute run as a criterion (according to school grade and sex). Four morphological and 6 motor variables covering the morphological-motor system were used in a sample of 4,440 children of both sexes aged 7-11 years, elementary school first- to four-graders from the Primorje-Gorski Kotar County, Republic of Croatia, divided into 8 groups. Data were processed by use of regression analysis. Study results clearly showed the values of the criterion variable to rise and criterion prediction using the set of predictor variables to improve with age. Also, the number of predictors included in power run prediction was observed to significantly increase with age. Strength factors with a predominance of explosive strength and repetitive strength in boys and girls, respectively, were the best criterion predictors. It is emphasized that development of the morphological-motor system and thus functioning of the body as a whole are influenced by aerobic power upgrading. Appropriate systematic kinesiologic activities accelerate the process of aerobic power integration in the morphological-motor system. As indicated by study results, this integration occurred at a faster rate and was more intensive in girls than in boys.