bluuebunny/crossref_metadata_2025 huggingface dataset:
Nutritional Determinants of Epithelial Ovarian Cancer Risk: A Case-Control Study in Mexico
Authors: Salazar-Martinez Eduardo , Lazcano-Ponce Eduardo C. , Lira-Lira Guillermo Gonzalez , Escudero-De los Rios Pedro , Hernandez-Avila Mauricio
Published: April 2003

Background: Variations in the incidence of cancer can be influenced by diet and specific lifestyles. In the last years, diet has been evaluated as an important factor in the development of ovarian cancer, even though the results have not been consistent. Dietary factors related to the risk of ovarian cancer in Mexican women were evaluated. Methods: A case-control study in Mexico City was done during 1995–1997 in a social security hospital, evaluating 84 new cases of ovarian cancer and 629 controls. A validated questionnaire with 116 items about the frequency and type of food intake was used. The analysis of nutrients was done with the residual method adjusted for total energy intake and other predictor variables through logistic regression methods. Also, partition models estimated the total caloric intake for other sources. Results: The nutrients negatively associated with ovarian cancer in the highest versus the lowest tertile were retinol (OR 0.52; p for trend = 0.03) and vitamin D (OR 0.43; 95% CI 0.23–0.80; p = 0.01; residual model). Additionally, carbohydrates were positively associated (partition model: OR 1.08; 95% CI 1.00–1.15), and tortilla intake did not show an association with ovarian cancer (OR 0.96; 95% CI 0.78–1.17). Conclusions: The diet of the Mexican population is rich in carbohydrates; in Mexico corn intake is the main energy source. On the other hand, vitamins such as retinol and vitamin D were shown to be associated with this neoplasm in a protective way; nevertheless, further studies are necessary to allow us to corroborate our results. This is the first attempt in our country that relates the Mexican diet to ovarian cancer.
Comorbidity of Anxiety Disorder among Patients with Bipolar I Disorder in Remission
Authors: Tamam Lut , Ozpoyraz Nurgul
Published: April 2003

The aim of this study was to assess the comorbidity of lifetime and current prevalences of anxiety disorders among 70 patients with bipolar I disorder in remission using structured diagnostic interviews and to examine the association between comorbidity and several demographic and clinical variables. Forty-three (61.4%) bipolar I patients also met DSM-IV criteria for at least one lifetime comorbid anxiety disorder. Obsessive-compulsive disorder (39%) was the most common comorbid lifetime anxiety disorder, followed by simple phobia (26%) and social phobia (20%). First episode and male sex were found to have lower rates of comorbid current anxiety disorders. The presence of anxiety disorders was related to significantly higher scores on both anxiety and general psychopathology scales. The results of the present study support previous findings of a high comorbidity rate of anxiety disorders in bipolar I disorder cases and indicate that the presence of an anxiety disorder leads to more severe psychopathology levels in bipolar I patients.
Influence of Natural Exposure to Pollens and Domestic Animals on Airway Responsiveness and Inflammation in Sensitized Non-Asthmatic Subjects
Authors: Boulay Marie-Eve , Boulet Louis-Philippe
Published: April 2003

Background: Atopy may be a risk factor in the development of asthma. Indoor allergens are considered to be more potent asthma inducers than outdoor ones such as pollens. Lower airway inflammation may be present in non-asthmatic subjects during natural exposure to relevant allergens and may eventually lead to the development of asthma. Aims: To document seasonal variation in lower airway responsiveness and inflammation in sensitized non-asthmatic subjects, during natural exposure to allergens, and to determine whether it is more marked in those exposed to animals to which they are sensitized. Methods: Twenty-two atopic subjects were seen during and out of the pollen season. All (but the controls) were sensitized to domestic animals, and to trees, grasses or ragweed. Eleven were not exposed to animals at home and 8 were exposed. They were compared with 3 normal controls. A respiratory questionnaire was administered, allergy skin prick tests, spirometry, methacholine challenge, blood and induced sputum with differential cell counts were obtained during the pollen season for all subjects. These tests were repeated out of the pollen season. Results: Throughout the study, none of the subjects had asthma symptoms. Mean PC20 was significantly lower in subjects exposed to animals compared with unexposed subjects or controls, both during and out of the pollen season. In season, subjects exposed to animals had significantly higher sputum eosinophil numbers than unexposed or normal control subjects. Conclusions: Non-asthmatic atopic subjects show variable degrees of airway responsiveness and inflammation. However, subjects exposed to animals show higher airway eosinophilia, which may suggest they are at increased risk of developing airway hyperresponsiveness and asthma.
Comparative Study of Antimicrobial Resistance of Pseudomonas aeruginosa Strains Isolated from Patients of Caracas and Asunción in a 4-Year-Period
Authors: Rodríguez Alfonso J. , Samaniego D.R. Antonio , Soskin Ana , Rodríguez Cruz N. , Canese Jorge , de Canese Juana Ortellado , Molina Nilda , García Ada , Duque Carmen , Meijomil Pilar , Arena Francis
Published: April 2003

The antimicrobial resistance of Pseudomonas aeruginosa to beta-lactams, aminoglycosides and ciprofloxacin was investigated in two Latin American hospitals, one in Venezuela and the other in Paraguay. The resistance of P. aeruginosa was investigated in 1,481 clinically isolated strains, 988 from Asunción and 493 from Caracas, collected between 1996 and 1999. Susceptibility was assessed by the disk diffusion method according to the National Committee for Clinical Laboratory Standards. 11.4% were resistant to cefoperazone, 11.4% to ceftazidime, 12.8% to piperacillin, 13.6% to amikacin, 18.2% to gentamicin, 11.1% to ciprofloxacin, and 6.7% to imipenem. There were significant differences in resistance patterns between isolates from Asunción and Caracas. Resistance was higher in Caracas. Despite similar antibiotic usage policies and other measures, differences in the resistance patterns of P. aeruginosa are evident in this study. The clinical and therapeutic implications of this resistance suggest the need to maintain surveillance in local settings, especially in developing countries such as Venezuela and Paraguay.
Effect of Physical Activity on the Pharmacokinetics of Ceftazidime in Mice
Authors: Rule R. , Giampieri J. , Marchetti S. , Prozzi G. , Buschiazzo H. , de Buschiazzo P.M.
Published: April 2003

Background: The aim of the present work was to assess comparatively the pharmacokinetic profile of ceftazidime (CAZ) in trained and non-trained mice. Methods: The study was performed on 256 mice divided at random into four groups: long-term physically trained mice with (E1a) and without (E1b) physical activity prior to the administration of CAZ, and untrained mice with (E2a) and without (E2b) physical activity prior to the administration of the antibiotic. CAZ was administered intramuscularly (25 mg/kg) to all mice, and blood samples were obtained at differen time points. The plasma concentrations of CAZ were determined by HPLC and analyzed by non-compartmental models. Results: The area under the curves in groups E1a and E2a (27.3 and 22.9 µg·ml–1·h, respectively) were different compared to the other groups [(E1b) = 11.1 and (E2b) = 15.6 µg·ml–1·h; p < 0.05]. Differences were observed between the concentration-time of CAZ in E1a compared to E1b, E1a versus E2a, E1a versus E2b, E1b versus E2a and E1b versus E2b (p < 0.05). Conclusion: Physical activity performed prior to CAZ administration modified the pharmacokinetic profile of the drug administered to mice.
Green Tea (Camellia sinensis) Protects against Selenite-Induced Oxidative Stress in Experimental Cataractogenesis
Authors: Gupta S.K. , Halder N. , Srivastava S. , Trivedi D. , Joshi S. , Varma S.D.
Published: April 2003

Cataract is the leading cause of blindness worldwide. It is a multifactorial disease primarily associated with oxidative stress produced by free radicals. The protection offered by various antioxidants in cataract development is well established. Polyphenolic compounds present in green tea (Camellia sinensis) are reported to possess antioxidant property in various pathological conditions. The present study was undertaken to evaluate the anticataract potential of green tea leaf (GTL) extract in the development of lens opacification. Enucleated rat lenses were randomly divided into normal, control and treated groups and incubated for 24 h at 37°C. Oxidative stress was induced by sodium selenite in the culture medium of the two groups (except the normal group). The medium of the treated group was additionally supplemented with GTL extract. After incubation, lenses were subjected to glutathione and malondialdehyde estimation. Enzyme activity of superoxide dismutase, catalase and glutathione peroxidase was also measured in different sets of the experiment. In vivo cataract was induced in 9-day-old rat pups of both control and treated groups by a single subcutaneous injection of sodium selenite. The treated pups were injected GTL extract intraperitoneally prior to selenite challenge and continued for 2 consecutive days thereafter. Cataract incidence was evaluated on 16th postnatal day by slit lamp examination. There was positive modulation of biochemical parameters in the organ culture study. Green tea was also found to reduce the incidence of selenite cataract in vivo. The results suggest that green tea possesses significant anticataract potential and acts primarily by preserving the antioxidant defense system.
In vitro Fluoride Uptake by Enamel from Different Amine Fluoride Concentrations
Authors: Rošin-Grget K. , Linčir I. , Andrijanić A.
Published: April 2003

The aim of this in vitro study was to examine whether the concentration of amine fluoride solution influences the uptake of fluoride by enamel after topical treatment. Four slabs were prepared from each of 31 impacted third molars and selected at random so that one slab from each tooth was present in each group. One group of slabs served as an untreated control (D). The slabs of the other three groups were shaken for 3 min in an amine fluoride solution on 3 successive days: group A (1% F), group B (0.5% F) and group C (0.25% F). The amounts of KOH-soluble fluoride produced with 1 and 0.5% amine fluoride solution did not differ significantly and were superior to 0.25% amine fluoride solution. A statistically significant increase in structurally bound fluoride was observed in groups A, B and C compared with control group D. The difference in the amounts of structurally bound fluoride was significant only between 1 and 0.25% F concentrations. These data suggest that the fluoride content in an amine fluoride solution (1%) can be decreased by half without reducing its ability to form alkali-soluble or structurally bound fluoride. The results of this study are consistent with those of previous clinical studies.
Relationship between Sports Drinks and Dental Erosion in 304 University Athletes in Columbus, Ohio, USA
Authors: Mathew Tanya , Casamassimo Paul S. , Hayes John R.
Published: April 2003

Acidic soft drinks, including sports drinks, have been implicated in dental erosion with limited supporting data in scarce erosion studies worldwide. The purpose of this study was to determine the prevalence of dental erosion in a sample of athletes at a large Midwestern state university in the USA, and to evaluate whether regular consumption of sports drinks was associated with dental erosion. A cross-sectional, observational study was done using a convenience sample of 304 athletes, selected irrespective of sports drinks usage. The Lussi Index was used in a blinded clinical examination to grade the frequency and severity of erosion of all tooth surfaces excluding third molars and incisal surfaces of anterior teeth. A self-administered questionnaire was used to gather details on sports drink usage, lifestyle, health problems, dietary and oral health habits. Intraoral color slides were taken of all teeth with erosion. Sports drinks usage was found in 91.8% athletes and the total prevalence of erosion was 36.5%. Nonparametric tests and stepwise regression analysis using history variables showed no association between dental erosion and the use of sports drinks, quantity and frequency of consumption, years of usage and nonsport usage of sports drinks. The most significant predictor of erosion was found to be not belonging to the African race (p < 0.0001). The results of this study reveal no relationship between consumption of sports drinks and dental erosion.
Achieving Tobacco Cessation: Current Status, Current Problems, Future Possibilities
Authors: Vaszar Laszlo T. , Sarinas Priscilla S.A. , Lillington Glen A.
Published: April 2003

Assisting smokers to achieve tobacco cessation has always been difficult. The development of pharmacological approaches to the attainment of abstinence from tobacco usage has been very helpful, although our understanding of optimal clinical use is still incomplete and imperfect. Bupropion and nicotine therapy (NT) will help reduce the severity of nicotine withdrawal symptoms, whether used separately or in combination. Effectiveness is greater with the combination of drugs than with either drug alone. Nevertheless, the initial ‘quit rate’ is usually less than 50%, and there is a considerable decrease in the abstinence rate after the course of therapy has been completed. Effectiveness is increased if higher doses of NT are employed, with or without concomitant bupropion. Much remains to be learned about optimal doses, preferred durations of therapy and tapering, prevention and management of relapses, and selection of modes of delivery of NT. The discovery that nicotine dependence has a major genetic component has stimulated much interest and many research studies. The preliminary results are interesting, to say the least.
Harm Reduction – A Treatment Approach for Resistant Smokers with Tobacco-Related Symptoms
Authors: Jiménez-Ruiz Carlos , Solano Segismundo , Viteri Soledad Alonso , Ferrero Miguel Barrueco , Torrecilla Miguel , Mezquita Miguel Hernández
Published: April 2003

Smokers with chronic obstructive pulmonary disease (COPD) appear to represent a hard-core group, and this presents a dilemma for chest physicians. A reduction in cigarette smoking benefits health, and nicotine replacement therapy (NRT) can aid smoking reduction. Hence we studied the efficacy of nicotine gum in helping hard-core smokers with severe COPD to quit. Seventeen smokers with severe COPD (FEV1 38–47% of predicted normal) who smoked >30 cigarettes/day but were unable to quit were encouraged to reduce their smoking as much as possible by using 4-mg nicotine gum. Five gradually reduced their daily tobacco consumption and, 18 months after starting NRT, were smoking an average of 6 cigarettes/day while still using nicotine gum. Compared to baseline, their respiratory symptoms had improved, and both FEV1 and FVC had increased. There was no improvement in pulmonary function in the group of smokers who did not reduce their cigarette consumption. No adverse events relating to nicotine occurred among the patients who used NRT to reduce their smoking. We propose that this reduction approach should be considered for patients with respiratory disease who are unable or unwilling to stop smoking.
A Health-Related Quality-of-Life Comparison of Formoterol (Oxis®) Turbuhaler® plus Budesonide (Pulmicort®) Turbuhaler® with Budesonide Turbuhaler® Alone and Noncorticosteroid Treatment in Asthma: A Randomized Clinical Study in Russia
Authors: Chuchalin A.G. , Svensson K. , Ståhl E. , Ovcharenko S.I. , Goriachkina L.A. , Sidorenko I.V. , Tsoi A.N. , on behalf of the EPOCH Study Group o
Published: April 2003

Background: In Russia, current therapy for the long-term management of asthma is mainly nonsteroidal. This situation provides the opportunity to evaluate new asthma treatments in a patient cohort with little previous exposure to inhaled corticosteroids. Objectives: To compare the effect of formoterol (Oxis®) Turbuhaler® plus budesonide (Pulmicort®) Turbuhaler with budesonide Turbuhaler alone, on the health-related quality of life (HRQL) of patients with mild to moderate asthma. Methods: A double-blind, parallel-group, randomized, 12-week study compared formoterol Turbuhaler plus budesonide Turbuhaler and budesonide Turbuhaler alone with an open control group of the investigator’s choice of noncorticosteroid therapy. Patients completed the Short Form 36 (SF-36) and the Asthma Quality of Life Questionnaire (AQLQ). Results: The improvement in HRQL scores for patients treated with noncorticosteroids was significantly less (p < 0.05) than those treated with formoterol plus budesonide and budesonide alone in all domains of the SF-36 and AQLQ with one marginal exception (budesonide versus investigator’s choice, SF-36, Mental Component Scale, p = 0.053). Improvements in HRQL scores of formoterol plus budesonide, compared with budesonide alone, although generally higher, were not significantly different. Formoterol plus budesonide was more effective in improving lung function and reducing both symptoms and the need for relief terbutaline inhalation. Conclusion: Formoterol Turbuhaler plus budesonide Turbuhaler and budesonide Turbuhaler alone significantly improved the HRQL of patients with mild to moderate asthma compared with noncorticosteroid treatment.
Characterization of supernumerary rings and giant marker chromosomes in well-differentiated lipomatous tumors by a combination of G-banding, CGH, M-FISH, and chromosome- and locus-specific FISH
Authors: Micci F. , Teixeira M.R. , Bjerkehagen B. , Heim S.
Published: April 2003

Supernumerary ring chromosomes and/or giant marker chromosomes are often seen in soft-tissue tumors of low-grade or borderline malignancy, such as well-differentiated liposarcomas or atypical lipomas. Classic cytogenetic banding techniques have proved insufficient to identify the genomic composition and structure of such rings and markers, but fluorescent in situ hybridization (FISH) studies have shown that they consist mainly of amplified material from chromosome 12, more specifically from bands 12q13→q15. We have used the new FISH-based screening techniques comparative genomic hybridization (CGH) and multicolor-FISH (M-FISH) in combination with G-banding and analysis by chromosome- and locus-specific fluorescent in situ probes to examine in detail the karyotypic characteristics of 22 lipomatous tumors, most of them classified histologically as well-differentiated liposarcomas, selected because they had been shown to harbor rings and/or marker chromosomes. M-FISH, in contrast to G- banding, was found to be informative with regard to the chromosomal origin of the rings and other markers present, whereas CGH and hybridizations with locus-specific probes helped identify which subchromosomal regions were involved. We found that chromosome bands 12q15→q21 were always gained, with 12q15→q21 being amplified (i.e., a green-to-red ratio >2 by CGH) in 14 of 22 tumors. In three tumors, two distinct but close amplicons in 12q could be identified, corresponding to bands 12q13→q15 and 12q21. The genomic segment 1q21→q23 was gained in 12 cases, reaching the level of amplification in seven. Bands 6q24 and 7p15, whose pathogenetic involvement in liposarcomas has not been reported previously, were gained in three cases each. In addition, the rings and giant markers often contained interspersed sequences from several other chromosomes that did not give an equally clear impression of being nonrandomly involved.
Salvage of Cyclosporine A-Induced Oxidative Stress and Renal Dysfunction by Carvedilol
Authors: Padi Satyanarayana S.V. , Chopra Kanwaljit
Published: April 2003

Background: Cyclosporine A (CsA) is the first-line immunosuppressant employed for the management of solid organ transplantation and autoimmune diseases. Nephrotoxicity is the major limitation of CsA use. Recent evidence suggests that reactive oxygen species (ROS) play an important role in mediating CsA nephrotoxicity. The present study was designed to investigate effects of carvedilol, a third-generation β-blocker with potent free radical-scavenging activity on CsA-induced oxidative stress and resultant renal dysfunction in a rat model of chronic CsA nephrotoxicity. Methods: Carvedilol (2.0 and 4.0 mg/kg i.p.) and propranolol (10 mg/kg i.p.) were administered to separate group of animals 24 h before and concurrently with CsA (20 mg/kg s.c.) for 21 days. Renal function was assessed by estimating plasma creatinine, blood urea nitrogen (BUN), creatinine and urea clearance. Tissue lipid peroxidation was measured as thiobarbituric acid-reacting substances (TBARS). Renal morphological alterations were assessed by histopathological examination of hematoxylin-eosin, PAS and Masson’s trichrome stained sections of the kidneys. Results: CsA (20 mg/kg s.c) administration for 21 days produced elevated levels of TBARS and deteriorated renal function as assessed by increased plasma creatinine, BUN and decreased creatinine and urea clearance as compared to vehicle-treated rats. The kidneys of CsA-treated rats showed severe striped interstitial fibrosis, arteriolopathy, glomerular basement thickening, tubular vacuolization and hyaline casts. Propranolol neither decreased TBARS nor improved the renal dysfunction and morphological changes induced by CsA. Both doses of carvedilol markedly reduced elevated levels of TBARS, whereas the higher dose of carvedilol significantly attenuated renal dysfunction and morphological changes in CsA-treated rats. Conclusion: These data clearly indicate the renoprotective potential of carvedilol in CsA-induced nephrotoxicity and suggest a significant contribution of its antilipoperoxidative property in this beneficial effect.
Nephrotic Syndrome with Portal, Splenic and Renal Vein Thrombosis
Authors: Etoh Yuki , Ohsawa Isao , Fujita Takayuki , Fuke Yoshinobu , Endo Morito , Ohi Hiroyuki , Kumasaka Kazunari
Published: April 2003

Background: Thromboembolism is known as a major complication of nephrotic syndrome, but only 4 cases of portal vein thrombosis have been reported as a complication of nephrotic syndrome. All of these 4 cases had acute symptoms, and 3 of 4 were in relapsing phase of nephrotic syndrome when thrombi were found. We describe here a case of 51-year-old woman with fresh nephrotic syndrome that was asymptomatically complicated by portal, splenic and renal vein thrombosis. Conclusion: In the presence of fresh nephrotic syndrome of minimal change, asymptomatic and widely distributed, including portal vein, thrombus formation occurred. If the clinical course shows resistance to therapy, we must consider the complication of venous thrombosis. Anticoagulant therapy with heparin and warfarin was effective and all thrombi disappeared without any other complications.
Ontogenetic Changes in the Response Properties of the Peripheral Electrosensory System in the Atlantic Stingray (Dasyatis sabina)
Authors: Sisneros Joseph A. , Tricas Timothy C.
Published: April 2003

Adult stingrays use their ampullary electroreceptors to detect prey and locate mates, but the response properties and function of their electrosensory system in the pre-adult stages are unknown. We examined the response properties of Atlantic stingray (Dasyatis sabina) electrosensory primary afferent neurons through ontogeny to determine whether encoding of electrosensory information changes with age, and how it relates to the ontogenetic encoding of biologically relevant electric stimuli. We show that during development electrosensory primary afferents increase resting discharge regularity, show an upward shift in best frequency (BF), an increase in neural sensitivity, and a decrease in bandpass. These ontogenetic changes in the response properties of the stingray electrosense are consistent with sensory adaptations to enhance the avoidance of large predators as young, and increase the location of prey and mates as adults.
Detection of Congenital Anomalies by Fetal Ultrasonographic Examination across Europe
Authors: Stoll C. , Tenconi R. , Clementi M.
Published: April 2003

Objectives: Birth defects are a major health burden. Primary prevention is at present emerging, i.e. folate supplementation. When it is not possible, as is still the case for most birth defects, research is needed to determine how an optimal provision of prenatal diagnosis and use of services can be achieved. Ultrasound scans in the midtrimester of pregnancy are now a routine part of antenatal care in most European countries. The objective of this study was to evaluate the prenatal diagnosis of congenital anomalies by fetal ultrasonographic examination across Europe. Methods: Data from 20 registries of congenital malformations in 12 European countries were included. The prenatal ultrasound screening programs in the countries ranged from no routine screening to 3 fetal scans offered, including 2 for biometric purposes and 1 for search of congenital anomalies, the anomaly scan. Results: There were 8,126 cases with congenital anomalies with an overall prenatal detection rate of 44.3%. Termination of pregnancy was performed in 1,657 cases (21.8%). There was significant variation in the prenatal detection rate between regions with the lowest detection rate in registries of countries without routine fetal screening (Denmark and The Netherlands) and the highest detection rate in registries of countries with at least 1 anomaly scan (France, Germany, Italy, Spain, UK). However, there were large variations among the registries with a high detection rate. There were significant differences in the prenatal detection rate and proportion of induced abortions between isolated anomalies and associated anomalies (chromosomal aberrations, recognized syndromes, and multiple without chromosomal aberrations or recognized syndromes). Conclusions: Prenatal detection rate of congenital anomalies by fetal scan varies significantly between registries of European countries even with the same screening policy. Prenatal detection of congenital anomalies is significantly higher when associated malformations are present. The rate of induced abortions varies between registries of countries even with the same detection rate of congenital anomalies. The variation described may be due to cultural and policy differences.
Counselling following the Prenatal Diagnosis of Klinefelter Syndrome: Comparisons between Geneticists and Obstetricians in Five European Countries
Authors: Hall Sue , Marteau Theresa M. , Limbert Caroline , Reid Margaret , Feijóo Maria , Soares Maria , Nippert Irma , Bobrow Martin , Cameron Alan , van Diem Mariet , Verschuuren-Bemelmans Corien , Eiben Bernd , García-Miñaur Sixto , Walkinshaw Stephen , Soothill Peter , de Vigan Catherine , McIntosh Karen , Kirwan Donna
Published: April 2003

Objective: To describe and compare the information obstetricians and geneticists in five European countries report they would give following the prenatal diagnosis of Klinefelter syndrome. Methods: 388 obstetricians and 269 geneticists from Germany, the Netherlands, Portugal, Spain and the UK completed a brief questionnaire assessing two variables: the information they reported providing to parents following the prenatal diagnosis of Klinefelter syndrome (categorized as positive or negative); and their perceptions of the quality of life with the condition. Results: Geneticists were more likely than obstetricians to report providing more positive than negative information about Klinefelter syndrome than equal amounts of positive and negative information or more negative than positive information about the condition (excess positive information). Regardless of specialty, the information that health professionals reported providing was predicted by their perceptions of the quality of life with the condition, and the country from which they came. Those perceiving quality of life as greater were more likely to provide an excess positive information, as were health professionals from Germany and the UK. Conclusions: These results suggest that the information parents across Europe receive after the prenatal diagnosis of Klinefelter syndrome varies according to the specialty and country of the health professionals consulted, and their perceptions of quality of life with the condition. This variation seems to reflect personal, cultural and professional differences between health professionals.
How Disturbing Is It to Be Approached for a Genetic Cascade Screening Programme for Familial Hypercholesterolaemia?
Authors: van Maarle M.C. , Stouthard M.E.A. , Marang-v.d. Mheen P.J. , Klazinga N.S. , Bonsel G.J.
Published: April 2003

Objectives: To assess the screenees’ views on, and the psychological impact of, a family-based genetic screening programme for familial hypercholesterolaemia (FH) and to evaluate non-participation. Methods: Self-administered questionnaires were filled out at the time of screening and after communication of the test result. Non-participants were interviewed by phone. Results: Of the people approached for screening, 2% did not participate. These 2% were not interested, had already been clinically diagnosed, or were afraid of insurance consequences. 677 screenees participated, of whom 215 (32%) tested FH positive. Less than 5% of the screenees were critical of the approach and the information provided. 20% of the screenees expressed feelings of social pressure. Effects on mood were minimal to absent, as were general ‘quality of life’ effects. Conclusions: Screening for FH is highly acceptable to screenees, although social pressure is prevalent. Only a small percentage of people being approached did not participate.
Gastroduodenal Artery Stump Haemorrhage following Pylorus-Sparing Whipple Procedure: Treatment with Covered Stents
Authors: Mansueto Giancarlo , D’Onofrio Mirko , Iacono Calogero , Rozzanigo Umberto , Serio Giovanni , Procacci Carlo
Published: April 2003

Background/Aims: To report a case of bleeding after pancreatoduodenectomy in a patient with pancreatic leak and portal thrombosis who was successfully treated with an endovascular approach. Methods: A 58-year-old male, suffering from neoplasm of the distal bile duct, underwent a pylorus-preserving Whipple procedure. On the 18th day, following a sudden drop in pressure and low haematocrit values, the patient underwent surgery. The source of the bleeding was not found. Six days later, following the appearance of bleeding from the abdominal drainage and haematemesis with shock, the patient had an immediate angiography. Bleeding from the gastroduodenal artery stump was evident, the portography showed no portal flow. With respect to the shortness of the stump, safe embolisation with coils, while preserving the common hepatic artery patency, was difficult to obtain. Results: By transcatheter placement of covered stents into the hepatic artery and thereby occluding the origin of the gastroduodenal artery, the bleeding was stopped. After 2 months, CT angiography showed patency of both the common and proper hepatic arteries. Nine months after the procedure the patient is in good health. Conclusions: Percutaneous placement of covered stents can be the solution in cases where transcatheter embolisation is not recommendable because of portal vein thrombosis.
The Allergenicity of Soybean-Based Products Is Modified by Food Technologies
Authors: Franck P. , Moneret Vautrin D.A. , Dousset B. , Kanny G. , Nabet P. , Guénard-Bilbaut L. , Parisot L.
Published: April 2003

Background: Numerous products based on soybean are available and various food technologies are applied for their production. The allergenicity of natural soybean may be modified by these treatments. Objectives: To compare the allergenicity of native soybean proteins with those of soy milk and texturized protein products. To show additional allergens. Methods: Three commercial products and two infant formulas were studied: Soybean flour, soy milk, texturized soy proteins, two infant formulas; the first containing total proteins and the second containing a soy protein hydrolysate. Sera from 9 patients allergic to soy protein were tested by immunoblotting (IB). IB inhibition was achieved by incubating sera with protein extract from soybean flour. Results: The SDS-PAGE profile of soybean flour protein and soy milk showed a difference in the proportions of the various protein fractions, with a higher concentration of 37-kD protein in flour and 33-kD protein in milk. Infant formula 1 contained proteins with a molecular weight below 28 kD. The texturized extract contained high proportions of 31- to 34- and 38-kD proteins. Immunoblotting revealed a lack of allergenicity in infant formula. Sera recognizing the 38- and 50-kD proteins in texturized soy protein also recognized the 37- and 49-kD proteins in soybean flour and in soy milk, suggesting a protein glycation by texturization processes. The 30- to 34-kD band in texturized proteins was devoid of any allergenicity. This study seems to indicate that the 30-kD allergen (Gly m Bd 30) disappears during the production of texturized soy protein. Conclusion: All technologies applied to soybean-based products induce striking variation in the protein profile and allergenicity. Texturized protein could lack the major allergen Gly m Bd 30. Further studies or texturization might generate modified technologies in order to create hypoallergenic texturized proteins.
Murine Strain Differences in Airway Inflammation Induced by Diesel Exhaust Particles and House Dust Mite Allergen
Authors: Sadakane Kaori , Ichinose Takamichi , Takano Hirohisa , Yanagisawa Rie , Sagai Masaru , Yoshikawa Toshikazu , Shibamoto Takayuki
Published: April 2003

Background: Differences in allergic airway inflammation induced by ovalbumin (OVA) + diesel exhaust particles (DEP) in various murine strains have already been reported. However, there is no report that different murine strains respond differently towards house dust mites or DEP, which are known to aggravate allergic asthma. Methods: The Dermatophagoides farinae allergens Der f (1 µg) or Der f (1 µg) + DEP (50 µg) were administered intratracheally to two different mouse strains (CBA/JN and C57BL/6N). Histological changes in the lung tissues, asthma-relevant cytokines in the lungs, and allergen-specific immunoglobulins in plasma were investigated. Results: Der f treatment led to the proliferation of goblet cells, production of mucus plugs, and the recruitment of eosinophils and lymphocytes to the airways of the mice. The manifestation of the airway inflammation in the C57BL/6N mouse was much greater than in the CBA/JN mouse. The protein levels of interleukin (IL)-4 and IL-5, regulated on activation, normal T cell expressed, and presumably secreted (RANTES), and eotaxin in the lung tissue of C57BL/6N mice were higher than those in CBA/JN mice by a factor of 1.26 (IL-4), 5.26 (IL-5), 2.07 (RANTES) and 3.27 (eotaxin). DEP aggravated the manifestations of the eosinophilic inflammation in CBA/JN mice through goblet cell proliferation. However, the exact effect of DEP could not be evaluated in C57BL/6N because of its severe enhancement of the inflammation. DEP enhanced the local expression of IL-5, RANTES, and eotaxin in the CBA/JN mouse, and consequently triggered an increased IgG1 production in both strains. Allergen-specific IgE antibodies were lower than 1 titer in both mice. Conclusion: The murine strain differences in the pathogenesis of allergic airway disease caused by mite allergen might be related to the local expression of the cytokines we screened. The aggravating effect of DEP may be mediated by an increase in the local expression of IL-5, RANTES, eotaxin, and the production of an antigen specific to IgG1.
Expression of a Functional Asialoglycoprotein Receptor in Human Renal Proximal Tubular Epithelial Cells
Authors: Seow Ying-ying T. , Tan Michelle G.K. , Woo Keng Thye
Published: April 2003

Background: The asialoglycoprotein receptor (ASGPR) is a C lectin which binds and endocytoses serum glycoproteins. In humans, the ASGPR is shown mainly to occur in hepatocytes, but does occur extrahepatically in thyroid, in small and large intestines, and in the testis. In the kidney, there has been evidence both for and against its existence in mesangial cells. Methods: Standard light microscopy examination of renal tissue stained with an antibody against the ASGPR was performed. The mRNA expression for the ASGPR H1 and H2 subunits in primary human renal proximal tubular epithelial cells (RPTEC), in the human proximal tubular epithelial cell line HK2, and in human renal cortex was investigated using reverse-transcribed nested polymerase chain reaction. ASGPR protein expression as well as ligand binding and uptake were also examined using confocal microscopy and flow cytometry (fluorescence-activated cell sorting). Results: Light microscopy of paraffin renal biopsy sections stained with a polyclonal antibody against the ASGPR showed proximal tubular epithelial cell staining of the cytoplasm and particularly in the basolateral region. Renal cortex and RPTEC specifically have mRNA for both H1 and H2 subunits of the ASGPR, but HK2 only expresses mRNA for H1. Using a monoclonal antibody, the presence of the ASGPR in RPTEC was shown by fluorescence-activated cell sorting and immunofluorescent staining. Specific binding and uptake of fluorescein isothiocyanate labelled asialofetuin which is a specific ASGPR ligand was also demonstrated in RPTEC. Conclusions: Primary renal proximal tubular epithelial cells have a functional ASGPR, consisting of the H1 and H2 subunits, that is capable of specific ligand binding and uptake.
Characterization of Th1/Th2 Profile in Uremic Patients
Authors: Nitta Kosaku , Akiba Takashi , Kawashima Akira , Kimata Naoki , Miwa Naoko , Nishida Eiichi , Uchida Keiko , Honda Kazuho , Yumura Wako , Nihei Hiroshi
Published: April 2003

End-stage renal failure (ESRD) induces a clinical state of immunodeficiency with a higher incidence of infections and a higher mortality due to infectious complications compared with the normal population. Using a newly developed immunofluorescent staining of intracellular cytokines for flow cytometric analysis, we studied Th subsets in 22 healthy control subjects, 28 patients with compensated chronic renal failure (CRF), 25 patients on hemodialysis (HD), and 24 patients on continuous ambulatory peritoneal dialysis (CAPD). Our results demonstrate that the percentage of both interferon-γ-positive cells and interleukin-4-positive cells increased in compensated CRF patients compared with those in healthy subjects. Moreover, a significantly higher percentage of CD4-positive cells is characterized by a Th1-type cytokine production pattern in HD patients and by a Th2-type cytokine secretion pattern in CAPD patients. These results suggest that the altered Th1/Th2 balance may be associated with the pathogenesis of ESRD.
A Rare Cause of Pulmonary-Renal Syndrome
Authors: Henning Bernhard F. , Gröne Herrmann-J. , Tepel Martin , Büchner Nikolaus , Kirchner Johannes , Zidek Walter
Published: April 2003

Diseases affecting both the lung and the kidney have grave prognosis and serious diagnostic and therapeutic consequences. Here, 3 cases of pulmonary-renal syndrome caused by antiphospholipid syndrome are reported. The patients presented with dyspnea, renal insufficiency, pulmonary infiltrates on chest X-ray and areas of ground glass attenuation on computed tomography of the lungs. There were no signs of infectious disease, vasculitis or myocardial insufficiency. Clinical findings, antiphospholipid levels and histological findings in transbronchial and/or renal biopsy proved the diagnosis of antiphospholipid syndrome. Antiphospholipid syndrome is a comparatively rare disorder which is relevant in the differential diagnosis of diseases affecting both lung and kidney and requires specific therapeutic measures.
Preoperative Risk Factors for Surgery of Female Urethral Diverticula
Authors: Porpiglia Francesco , Destefanis Paolo , Fiori Cristian , Fontana Dario
Published: April 2003

Introduction: This study describes the authors’ experience about the most important risk factors in surgical treatment of female urethral diverticula. The attention is focused on the correlation between risk factors and common severe complications after surgical treatment. Patients and Methods: Eighteen women underwent transvaginal diverticulectomy from 1990 to December 2000. Voiding cystourethrography and transvaginal ultrasonography were performed preoperatively. As far as location is concerned, 10 women developed a mid-urethral diverticula, the remaining had diverticula equally distributed over the distal and proximal urethra. Ten diverticula showed a posterior development, 6 a lateral one and 2 diverticula had horseshoe shape. In 6 cases, diverticulum was larger than 4 cm. Results: Follow-up ranged from 44 to 121 months. We recorded one urethrovaginal fistula, two genuine stress incontinence of new onset, associated in one case with recurrent diverticulum, and one recurrent diverticulum as major complications. Conclusions: The most important risk factors, evaluated with a statistical analysis, are represented by delayed diagnosis, size over 4 cm, and lateral or horseshoe shape of the diverticulum.
Brucellar Orchitis in Innerwest Anatolia Region of Turkey
Authors: Kadikoylu Gurhan , Tuncer Gunay , Bolaman Zahit , Sina Muhammed
Published: April 2003

Brucellosis, which affects the genitourinary system in rate of 2–20%, is a multiorgan infectious disease. Twelve patients were diagnosed as having brucellar orchitis serologically, clinically and ultrasonographically. In 2 patients, Brucella melitensis was isolated in blood cultures. All the patients were working in cattle dealing. They were treated with 600 mg/day rifampicin plus 200 mg/day doxycycline for 6 weeks and followed up during 1 year. They recovered clinically within 3 weeks. Although they did not have any symptoms or findings, in 4 patients, serological titers did not return to normal after 6 weeks. In 2 of these patients, relapse was seen in the 6th and 8th months, respectively. These 2 patients recovered with 1 g/day ciprofloxacin plus 2 g/day tetracycline for 6 weeks. Relapse did not occur again. Conclusively, brucellosis must be considered as a cause of orchitis in especially endemic regions where cattle dealing is widespread. The patients must be followed for relapse during at least 1 year.
A Rare Retroperitoneal Benign Tumor
Authors: Aridogan I. Atilla , Bayazıt Yıldırım , Soyupak Bülent , Zeren Handan , Uguz Aysun , Tansuǧ; Zühtü
Published: April 2003

A case of retroperitoneal Castleman’s disease – a benign lymphoid tumor – is reported. The tumor is excised totally. A 34-month follow-up period is disease free and uneventful. The preoperative workup presented, its clinical behavior and management are discussed.
Function of the Hypothalamo-Pituitary-Adrenal Axis and Humoral Immune Mechanisms during Experimental Allergic Encephalomyelitis in SJL/J Mice
Authors: Andreini Isabella , Getuli Claudia , Pacelli Vanessa , Manno Rosanna , Ragazzoni Enzo , Nunziata Alfredo , Navarra Pierluigi
Published: April 2003

Objectives: In the present work, a method to induce experimental allergic encephalomyelitis (EAE) in female SJL/J mice was developed and validated in our laboratory. Although the latter is a popular animal model to mimic human multiple sclerosis, it remains to be clarified if: (1) the measurement of circulating antibodies against myelin antigens can be used as an index to predict the development of clinical EAE, as well as the severity of disease, and (2) the genetic susceptibility of this strain is associated with altered hypothalamo-pituitary-adrenal (HPA) function. Methods and Results: We observed that SJL/J mice display a strong humoral response to immunization with myelin basic protein (MBP), as assessed by the titration of circulating anti-MBP antibodies. However, there was no apparent correlation between the presence and amount of circulating antibodies and the occurrence or severity of disease. Concerning the responsiveness of the HPA axis, we observed that circulating corticosterone levels are not modified at all during the induction of EAE, whereas an increase is observed at a later stage of the disease. Conclusions: The above profile is strongly reminiscent of the HPA axis response to the induction of EAE in Lewis rats, suggesting that the susceptibility of SJL/J mice to EAE may similarly be caused, at least in part, by blunted HPA reactivity to immune challenges.
Inhibitory Effect of Neurogenic and Immune Stressors on Testosterone Secretion in Rats
Authors: Rivier Catherine
Published: April 2003

Objective: We investigated the ability of foot shocks, endotoxemia and turpentine-induced tissue injury, to interfere with luteinizing hormone (LH) and testosterone (T) secretion, and the putative role of β-adrenergic, opiate- and corticotropin-releasing factor (CRF) receptors in these responses. Methods: Adult male rats were exposed to mild intermittent foot shocks for 1 h, administered endotoxin [lipopolysaccharide (LPS)] intravenously (i.v., 5 µg/kg), or injected with turpentine intradermally (i.m., 400 µl/kg), prior to injection with human chorionic gonadotropin (hCG, 1 U/kg i.v.). In some cases, antagonists to CRF, adrenergic or opiate receptors, or their vehicle were administered prior to the stressors. Levels of LH, T, tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), adrenocorticotropin (ACTH) and/or corticosterone were measured in serial blood samples. Results: All three challenges significantly lowered basal LH and T levels and blunted the T response to hCG, though the magnitude of this inhibition was significantly (p < 0.01) smaller in shocked rats (42%), compared to animals injected with LPS (92%) or turpentine (78%). Shocks, LPS and turpentine all significantly stimulated ACTH and corticosterone release, and the magnitude and time course of these responses were also stressor specific. While turpentine only increased circulating IL-6 concentrations, shocks and LPS both significantly increased circulating TNF-α and IL-6 levels, but the effect of shocks was markedly smaller. Pretreatment with propranolol did not restore T responses, while naloxone produced small and inconsistent effects. However, the CRF antagonist Astressin B, which significantly prevented stressor-induced increase in circulating levels of ACTH and corticosterone, partially reversed the inhibitory effect of LPS on hCG-induced T release. Conclusion: (1) Both neurogenic and systemic stressors lower basal plasma LH and T levels and blunt the T response to hCG. (2) LPS, whose ability to release ACTH and corticosterone was similar to that of shocks, but caused increases in circulating TNF-α and IL-6 levels that were significantly larger than those due to the other stressors, was the most potent inhibitor of the T response to hCG. (3) Neither β-adrenergic nor opiate receptors play a major role in the ability of the stressors we used to inhibit T release.