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Journal Article 2006; 27(4): 445-452 PubMed PMID: 16891997 Citation  Keywords:  Adult, Aged, Aged, 80 and over, Aging:immunology, Antioxidants:metabolism, Carcinogens:pharmacology, Circadian Rhythm:immunology, Female, Flow Cytometry, Granulocytes:drug effects, Humans, Infant, Newborn, Male, Middle Aged, Monocytes:drug effects, Oxidat.   

OBJECTIVES: In the present paper the circadian variation and age differences in human leukocyte reactive oxygen species (ROS) levels and plasma total antioxidant status were studied. Different ROS levels could influence disease during ageing and at different times of the day/night.

METHODS: Unstimulated and stimulated (12-O-tetradecanoyl-phorbol-13-acetate (TPA) blood samples were analysed by flow cytometry using dihydroethidium (DHE) and dihydrorhodamine 123 (DHR) as probes. 60 healthy individuals were divided into five equal groups ((I) 1-2 days post partum, (II) 20 +/- 2 years, (III) 40 +/- 2 years, (IV) 60 +/- 2 years and (V) 80 +/- 2 years) and 6 healthy volunteers were followed with blood samples at 3 hour intervals for 24 hours.

RESULTS: We observed a significant peak of ROS levels in both monocytes and granulocytes at 6 pm and 3 am using DHE as probe. DHR showed in principle the same pattern. The monocytes (unstimulated and stimulated) and unstimulated granulocytes of the newborn group showed higher ROS values than all the other groups, whereas the groups of adults did not differ from each other. The plasma total antioxidant status was significantly higher in the newborn group and showed no circadian variation.

CONCLUSIONS: The present data show that there is a circadian variation of ROS production in leukocytes that might possibly influence the occurrence of cardiovascular incidents like myocardial infarction. No increase in ROS production was found in healthy elderly compared to younger individuals. The increased ROS levels and antioxidant status of newborns might influence neonate immunity and play a part in cell signalling and development....

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Journal Article 2006; 27(4): 465-471 PubMed PMID: 16891996 Citation  Keywords:  Adolescent, Adult, Autistic Disorder:metabolism, Child, Docosahexaenoic Acids:blood, Fatty Acids, Omega-3:blood, Fatty Acids, Omega-6:blood, Humans, Immune System:metabolism, Intellectual Disability:metabolism, Male, Phospholipids:blood, Serotonin:metabol.   

OBJECTIVES: There is now some evidence that alterations in fatty acids may play a role in the pathophysiology of autism. The aim of the present study was to examine whether autism is accompanied by abnormalities in the composition of the polyunsaturated fatty acids (PUFAs) in plasma phospholipids.

METHODS: The plasma phospholipid omega-3 (3) and omega-6 (6) PUFA fractions and the 3/6 ratio were measured in 16 high-functioning male youngsters with autism (age 12-18) and 22 healthy volunteers. Group mean differences were assessed by means of analysis of variance (ANOVA).

RESULTS: In autism there was a significant increase in the fraction of C22:6-3 (docosahexaenoic acid, DHA) and an increase in the total 3/6 ratio.

DISCUSSION: The results of this study suggest that an increase of the plasma phospholipid 3 PUFAs, in particular DHA, and of the total 3/6 ratio may take part in the pathophysiology of autism. One hypothesis is that an increase of 3 PUFAs may cause alterations in the serotonergic turnover and the immune response system, both known to be associated with autism. Caution must be exercised against highly concentrated 3 PUFAs supplementation....

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Journal Article 2006; 27(4): 459-464 PubMed PMID: 16891995 Citation  Keywords:  Adolescent, Biomarkers:blood, Blood Glucose, Blood Pressure:immunology, C-Reactive Protein:metabolism, Child, Endothelium, Vascular:immunology, Female, Humans, Inflammation:epidemiology, Insulin:blood, Insulin Resistance:immunology, Intercellular Adhesion.   

OBJECTIVE: To determine the role of low-grade, systemic inflammation and endothelial activation in the modulation of blood pressure (BP) independently of other traditional risk factors in obese children and adolescents.

DESIGN: We surveyed 281 obese subjects, aged 6-18 years to investigate the relationship of serum inflammation and endothelial activation markers and blood pressure.

MEASUREMENTS: Clinical variables, indices of obesity, ambulatory 24-h blood pressure and serum concentrations of C-reactive protein (CRP), interleukin-6 (IL-6), interleukin-1 beta (IL-1 beta), intercellular cell adhesion molecule-1 (ICAM-1), vascular cell adhesion molecule-1 (VCAM-1), glucose and insulin. HOMA IR was used as a marker of insulin resistance (IR).

RESULTS: CRP, IL-6, IL-1 beta, and ICAM-1 correlated significantly with mean 24-h systolic BP, whereas CRP and IL-6 was positively correlated with mean 24-h diastolic BP. Multiple regression analysis showed that serum IL-6 (P < .001) concentration, HOMA IR (P < .01), and waist to hip ratio (P < .05) were the significant determinants of systolic BP, whereas CRP (P < .05) level was the only predictor of diastolic BP. There were no significant associations of cell adhesion molecules with BP.

CONCLUSIONS: These results indicate that low-grade inflammation may play a role in the modulation of arterial BP relatively early in life....

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Journal Article 2006; 27(4): 507-512 PubMed PMID: 16891993 Citation  Keywords:  Adolescent, Anthropometry, C-Peptide:blood, Cerebral Palsy:complications, Child, Child Nutrition Disorders:etiology, Child, Preschool, Energy Metabolism, Female, Growth Disorders:etiology, Human Growth Hormone:blood, Humans, Hydrocortisone:blood, Leptin:b.   

AIM: Children with Cerebral Palsy (CP) are generally undernourished and growth retarded than normal children. The reasons of malnutrition are not only due to poor nutritional status but also nonnutritional factors including negative neurotrophic effects and indirect factor such as immobility, endocrinological abnormalities or spasticity that energy requirements might be contributing factors. Several studies indicated that leptin which is produced by adipocytes, might regulate energy intake and expenditure. The aim of this study is to determine serum leptin levels in children with CP and to investigate the relationship between nutritional status and anthropometric measurements.

METHODS: Forty children with CP and 18 healthy controls were included in this study. The weight, height, body mass index (BMI), upper arm length (UAL) and triceps skinfold thickness (TST) was measured in all children. Serum leptin, growth hormone, C-peptide and cortisol levels were studied. Based on TST measurement CP patients were divided as DSF group (decreased subcutaneous fat) and non-DSF group (nondecreased subcutaneous fat).

RESULTS: UAL were shorter and TST measurements were thinner than control group (p<0.05, p<0.01). Group DSF had lower leptin concentrations compared to Group non-DSF and controls (p<0.001, p<0.001). On the other hand non DSF group had higher leptin levels than controls (p<0.05). There was a positive and significant correlation between leptin and anthropometric measurements, especially TST in children with CP. Serum leptin levels were also lower in non-ambulatory children than ambulatory children with CP (p<0.05).

CONCLUSION: This study has shown that triceps skinfold thickness is better index for the evaluation of nutritional status in children with CP. Serum leptin levels were lower in CP, especially in DSF group. The possible explanation of this finding may not only related with malnutrition, but also immobility related other factors such as bone metabolism and spasticity. We concluded that leptin which regulates energy intake might have a role of nutritional disorders in cerebral palsy. To better understand this relationship further studies are needed....

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Journal Article 2006; 27(4): 439-444 PubMed PMID: 16891992 Citation  Keywords:  Adult, Choice Behavior:physiology, Decision Making:physiology, Economics, Humans, Impulsive Behavior:metabolism, Male, Nonlinear Dynamics, Risk-Taking, Saliva:metabolism, Surveys and Questionnaires, Testosterone:metabolism, Time Factors,.   

OBJECTIVES: Although impulsivity has been associated with androgens (e.g., testosterone), little is known regarding the relationship between testosterone levels and impulsivity in intertemporal choice (delay discounting). This study was aimed to examine the relationship between delay discounting of gains and losses and testosterone levels, which is of interest in neuroendocrinology and neuroeconomics.

METHODS: We assessed degrees to which delayed monetary gains and losses were discounted (hyperbolic discounting rate) in healty male students (age: 22.4+/-2.67). Participants' salivary testosterone levels were also assessed by utilizing liquid chromatography/mass spectroscopy (LC/MS) method.

RESULTS: Non-linear curve fitting analysis showed an inverted-U relationship between delay discounting of gains and salivary testosterone levels; while no relationship between salivary testosterone levels and delay discounting of losses was observed.

CONCLUSIONS: The results indicate that (i) testosterone may enhance delay discounting rate of gains in non-impulsive subjects, (ii) testosterone may have an opposite (reducing) effect on delay discounting rate of gains in impulsive subjects, and (iii) testosterone is unrelated to subject's sensitivity to future bad outcomes. Implications for evaluating the effects of testosterone treatment and anti-androgenic therapy on impulsive behavior often observed in psychiatrics (e.g., pathological gambling, credit card debt, substance misuse, and needle-sharing) are discussed....

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Controlled Clinical Trial 2006; 27(4): 513-515 PubMed PMID: 16891991 Citation  Keywords:  Aged, Analgesics:administration & dosage, Bone Density Conservation Agents:administration & dosage, Diphosphonates:administration & dosage, Female, Humans, Infusions, Intravenous, Male, Middle Aged, Osteitis Deformans:complications, Pain:drug therapy, Pai.   

INTRODUCTION: Although an analgesic effect is an essential component of the mode of action of bisphosphonates, its physiological mechanisms are still unclear. Beta-endorphin release plays an important role in the analgesic effect of both calcitonin and raloxifene. As patients with Paget's disease receive large doses of bisphosphonates within relatively short time periods, we examined whether repeated pamidronate infusion therapy would cause measurable change in beta-endorphin levels

MATERIALS & METHODS: Visual analog scale (VAS) scores of pain intensity, beta-endorphin levels, and alkaline phosphatase activity of 11 patients with Paget's disease (7 with the mono- and 4 with the polyostotic form) were determined at baseline, as well as after 3 and 6 infusions (on Days 6 and 12 of treatment, respectively). Eleven untreated patients with Paget's disease (7 with the mono- and 4 with the polyostotic form) served as controls.

RESULTS: It was established that in the course of pamidronate infusion therapy BE levels remained constant, whereas the values in serum alkaline phosphatase and pain intensity scores were significantly reduced.

CONCLUSIONS: Although high-dose pamidronate therapy does mitigate pain substantially (as demonstrated by the reduction of VAS scores), its analgesic action is probably unrelated to the enhancement of beta-endorphin release....

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Clinical Trial 2006; 27(4): 523-528 PubMed PMID: 16891990 Citation  Keywords:  Adult, Female, Humans, Hysteroscopy:methods, Infertility, Female:diagnostic imaging, Leiomyoma:diagnostic imaging, Polyps:diagnostic imaging, Predictive Value of Tests, Sensitivity and Specificity, Sodium Chloride, Ultrasonography:methods, Uterine Neoplas.   

OBJECTIVES: The preliminary study was performed to evaluate the diagnostic accuracy of saline infusion sonohysterography (SIS) in the detection of intrauterine pathologies in infertile women The SIS findings were compared to the results of two widely used procedures: transvaginal sonography (TVS) and hysteroscopy (HS).

MATERIAL AND METHODS: 68 infertile women, aged 27-42 were enrolled in the study. TVS, SIS and diagnostic HS were consecutively performed in every patient. The results of each method were compared. Sensitivity, specificity, positive predictive value and negative predictive values for TVS and SIS were obtained.

RESULTS: Intrauterine pathologies were diagnosed in 25% of patients. TVS detected 6 (37.5%) and SIS revealed 11 (87.5%) of 13 intrauterine pathologies finally visualized at diagnostic hysteroscopy. TVS failed to visualize three submucous myomas, one endometrial polyp and two cases of septate uteri. All three cases of intrauterine synechiae were not detected with this method One submucous myoma and one endometrial polyp were not identified with SIS. The study group was, however, too limited to show statistically significant differences in diagnostic accuracy among TVS, SIS and HS.

CONCLUSIONS: Saline infusion sonohysterography is simple, sensitive and inexpensive diagnostic method. The procedure is not time-consuming, causes minimal discomfort to the patient and may be performed without anesthesia in office settings. The method may be recommended for the diagnosis of intrauterine pathologies in infertile women....

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Journal Article 2006; 27(4): 529-534 PubMed PMID: 16891989 Citation  Keywords:  Adult, Condylomata Acuminata:epidemiology, Female, Human papillomavirus 11, Human papillomavirus 16, Human papillomavirus 6, Humans, Infant, Newborn, Infectious Disease Transmission, Vertical, Kidney Failure, Chronic:epidemiology, Kidney Transplantation:s.   

OBJECTIVE: The aim of this study was to evaluate: 1) The prevalence of human papillomavirus (types 6 and 11 carrying a low risk of neoplasia, and type 16 implicated as cause of cervical neoplasia and cancer) in normal pregnant women and pregnant renal transplant recipients. 2) The correlation between maternal HPV infection and HPV presence in the cord blood and the oral cavity of the neonate. Evaluation of a likely, additional route of HPV transmission to the fetus, apart from the infected birth canal during vaginal delivery. The correlation between the mode of delivery in HPV-infected patients and the presence of HPV in their offspring.

DESIGN: Thirty-nine pregnant patients were included in the study. The study group consisted of nine pregnant renal transplant recipients. The control group consisted of 30 patients with normal pregnancy. The DNA of HPV types 6, 11 and 16 was studied in the discharge from the cervical canal, the maternal venous blood, the cord blood and the buccal smear obtained from the neonates.

SETTING: A university teaching hospital delivering approximately 2000 women annually.

RESULTS: Human papillomavirus (HPV) was found in 10 (26%) of 39 subjects. HPV types 6 and 11 was found in 7 (18%) of 39 subjects while HPV type 16 was present in 5 (13%) of the subjects. The co-occurrence of HPV types 6, 11 and 16 was detected in 2 patients from the control group. Transmission of HPV was established in 70% of study patients and their offspring.

CONCLUSIONS: 1) The HPV was found with 26% pregnant women. 2) The occurrence of HPV infections with pregnant renal transplant recipients in comparison with normal pregnancy was on similar level. High percentage of HPV transmission from mother to neonate was obtained. 3) The cesarean section probably doesn't protect from HPV infection. 4) There's a suggestion, the HPV infection of fetus may occur in utero....

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