Kidney biopsy in the elderly: diagnostic adequacy and yield

International Urology and Nephrology - The number of kidney biopsies (KB) performed in elderly patients has been increasing. Safety and usefulness of elderly KB have been well established, whereas...     

Use of home sphygmomanometers in Turkey: a nation-wide survey

The purposes of this study were to detect the prevalence of ownership of a home sphygmomanometer among hypertensive subjects through a nation-wide survey, to investigate parameters affecting ownership of a sphygmomanometer, to compare how home blood pressure monitoring (HBPM) was actually used in daily practice with some aspects of the current guidelines, and to discuss what we implemented to increase the reliability of HBPM in a developing country. A total of 2747 hypertensive patients from 34 cities, representative of the Turkish population, were enrolled in the study. A multiple-choice questionnaire was administered to each participant using the computer-assisted telephone interviewing method. Among 2747 hypertensive patients, 1281 of them (46.6%) had a home sphygmomanometer. Most of the patients were using wrist devices. The factors associated with ownership of a sphygmomanometer were female gender, older age, obesity, higher educational status, higher income level, living in urban areas, awareness of hypertension and anti-hypertensive drug usage. Only 16% of the devices were used on the advice of a physician. The patients learned usage of their device mainly from the sellers and their relatives. The ownership of a home sphygmomanometer is common among hypertensive patients in Turkey, but regular monitoring of blood pressure before physician visits is rare despite common ownership of these devices. Daily practice of HBPM in Turkey was far from the recommendations of the current guidelines. More effort is needed to improve the reliability of HBPM.     

Laparoscopic cholecystectomy accompanied by simultaneous umbilical hernia repair: a retrospective study

BACKGROUND: Umbilical defects may cause technical problems for general surgeons in patients during laparoscopic cholecystectomy (LC) operations and may increase the incidence of incisional hernia. AIM: The objectives of this study were to determine the optimal repair method for umbilical hernias that already exist or are encountered incidentally and to present data regarding potential problems that may occur during LC. SETTINGS AND DESIGN: Medical records of patients who had received simultaneous umbilical hernia repair (UHR) with LC were investigated retrospectively. MATERIALS AND METHODS: Cholelithiasis was accompanied by umbilical hernia in 64 (8.6%) out of 745 patients who underwent LC and UHR simultaneously in our hospital between 2000 and 2004. STATISTICAL ANALYSIS USED: The Mann-Whitney U, Chi-square, One-Way Anova, Kaplan-Meier survival analysis, the log-rank test and t test were used for statistical analyses. RESULTS: LC was followed by UHR using primary suture (Group 1), Mayo repair (Group 2) and flat mesh-based repair (Group 3) in 32 (50%), 18 (28.1%) and 14 (21.9%) patients, respectively. Mean body mass indexes (BMI) of patients were 26.6 kg/m 2, 29.2 kg/m 2 and 39.9 kg/m 2 in Groups 1, 2 and 3, respectively. Recurrence rates were 9.4%, 5.6% and none (0%) in Groups 1, 2 and 3, respectively. Recurrence was observed in three (7.0%) out of 43(67.2%) patients with BMI > or = 30 kg/m 2 while umbilical hernia recurred in one (4.8%) out of 21 (32.8%) patients with BMI < 30 kg/m 2. Overall morbidity and mortality rates were 14.1% and 0%, respectively. CONCLUSIONS: The outcomes of the UHR with mesh after laparoscopic surgeries appear to be better for either obese or non-obese patients than primary suture techniques in recurrence rates.     

Early and late diagnoses of 17β-Hydroxysteroid dehydrogenase type-3 deficiency in two unrelated patients

17β-hydroxysteroid dehydrogenase type 3 deficiency is a rare cause of 46 XY disorders of sexual development. Mutations in the HSD17B3 gene result in reduced activity of the 17β-HSD3 enzyme, decreasing the conversion of androstenedione to testosterone. In this report, two cases, admitted with different clinical findings in the neonatal and adolescent periods and were decided to be raised in different genders are presented. The first case who had complete female external genitalia presented on the third postnatal day with the complaint of swelling in the groin. He was decided to be raised as a male and was treated successfully with parenteral testosterone in order to increase phallus size before surgical correction of the external genitalia. The second case was an adolescent girl who presented due to pubertal virilisation and primary amenorrhoea and chose female gender. Molecular genetic analyses of the HSD17B3 gene revealed two different previously reported homozygous variants. We emphasise that patients with 17β-hydroxysteroid dehydrogenase type 3 deficiency can present with heterogeneous clinical findings in different age groups. Early diagnosis is important to prevent future gender confusion and related problems.     

Effect of haemodialysis on visual-evoked potential parameters

SUMMARY: Different papers have emphasized the presence of visual-evoked potential (VEP) abnormalities in metabolic disorders. The aim of this study was to perform pattern VEP (PVEP) recordings in patients with chronic renal failure just before and 24 h after dialysis to test the effect of this procedure on visual pathway generated parameters. Twenty-four haemodialysis patients (M/F:14/10; mean age: 48.8 ± 14.1 years) were examined. None of them were complaining from visual difficulties or from visual loss. The recording sessions were performed just before and 24 h after dialysis. The control group consisted from 27 healthy subjects matched for age and sex. Eight (33%) patients demonstrated abnormal P100 latency prolongation in at least one tested eye (six patients in one tested eye, two in both eyes) in the recording session just prior to dialytic treatment. In the post-treatment session, it was found that the abnormal P100 latencies that were present in six patients (75%) before dialysis had returned to normal, while in the remaining two (25%), the latency abnormality persisted. No correlation was found between VEP parameters and dialysis duration, serum blood urea nitrogen (BUN), creatinine, parathyroid hormone and haematocrit levels. However, a positive correlation in the intradialytic percentage variation of bodyweight with P100 latencies was found . Visual evoked potential is a reliable, simple and non-invasive technique that can be used for the investigation and follow up of subclinical involvement of visual pathways in patients with chronic renal failure. Detected abnormalities in some uraemic patients are reversible by using dialysis.     

Glutathione S-transferase gene polymorphisms in presbycusis.

HYPOTHESIS: Glutathione and glutathione-related antioxidant enzymes are involved in the metabolism and detoxification of cytotoxic and carcinogenic compounds as well as reactive oxygen species. Reactive oxygen species generation occurs in prolonged relative hypoperfusion conditions such as in aging. The etiology of presbycusis is much less certain; however, a complex genetic cause is most likely. The effect of aging shows a wide interindividual range; we aimed to investigate whether profiles of (glutathione S-transferase (GST) M1, T1 and P1 genotypes may be associated with the risk of age-related hearing loss. PATIENTS AND METHODS: We examined 68 adults with presbycusis and 69 healthy controls. DNA was extracted from whole blood, and the GSTM1, GSTT1 and GSTP1 polymorphisms were determined using a real-time polymerase chain reaction and fluorescence resonance energy transfer with a Light-Cycler Instrument. Associations between specific genotypes and the development of presbycusis were examined by use of logistic regression analyses to calculate odds ratios and 95% confidence intervals. RESULTS: Gene polymorphisms at GSTM1, GSTT1, and GSTP1 in subjects with presbycusis were not significantly different than in the controls (p > 0.05). Also, the combinations of different GSTM1, GSTT1, and GSTP1 genotypes were not an increased risk of presbycusis (p > 0.05). CONCLUSION: We could not demonstrate any significant association between the GSTM1, GSTT1, and GSTP1 polymorphism and age-related hearing loss in this population. This may be because of our sample size, and further studies need to investigate the exact role of GST gene polymorphisms in the etiopathogenesis of the presbycusis.     

TGF-beta1 gene polymorphisms and peritoneal equilibration test results in CAPD patients

Transforming growth factor-beta1 (TGF-beta1) stimulates the expression of collagen mRNA in cultured human peritoneal mesangial cells, which may predispose them to developing peritoneal fibrosis. Polymorphisms in the signal sequence genetically may be responsible for increased TGF-beta1 production (i.e., a substitution at amino acid position 10 and 25, +869 Leu(10)-Pro and +915 Arg(25)-Pro, respectively). The aim of this study was to find out whether there is any relation between peritoneal equilibration test (PET) results and TGF-beta1 gene polymorphism. Thirty-two CAPD patients and 72 healthy subjects were included into the study. Each CAPD patient had undergone two PET with a two-year interval. The patients were classified according to the results of a baseline PET as high (high-high average) and low (low-low average) transporters. In high transporters group (n = 20), the genotype frequencies were found as 45% Leu/Leu, 55% Leu/Pro for codon 10; and 85% Arg/Arg, 15% Arg/Pro for codon 25. In low transporters group (n = 12), the genotype frequencies were detected as 66.7% Leu/Leu and 33.3% Leu/Pro for codon 10; and 83.3% Arg/Arg, 16.7% Arg/Pro for codon 25. The distribution of the TGF-beta1 genotypes in our control population was compatible with a Hardy-Weinberg equilibrium. We found no relation between TGF-beta1 genotypes and peritoneal transport group (chi(2) test, p > 0.5). There was no relation between TGF-beta1 genotype and longitudinal change in peritoneal transport. This study is the first study analyzing the possible link between TGF-betal gene polymorphisms and the characteristics of peritoneal transport and longitudinal change of peritoneal transport characteristics in CAPD patients. Further work is needed to clarify the functional importance of these two polymorphisms in TGF-beta1 production and in the development of peritoneal fibrosis.