Yüzey Yanıt Metodolojisi İle Biberiye Yaparaklarından Rosmarinik Asit Ekstraksiyonunun Optimizasyonu

Rosmarinik asit, karnozol ve karnosik asit, biberiye (Rosmarinus officinalis) 'de bulunan önemli doğal antioksidandır. Rosmarinik asit (RA), Bu bileşiklerin, özellikle de Rosmarinik asitin biyolojik aktivitelerini rapor eden çok sayıda çalışma bulunmaktadır. Rosmarinik asitin in-vitro çalışmalarda anti-HIV-1, antibakteriyel, antioksidan, anti-kanserojen ve anti-alerjik aktiviteler, antiviral özellikler gibi bazı biyolojik faaliyetleri olduğu bildirilmiştir. In vivo çalışmalar da Rosmarinik Asitin antialerjik, antitromboz ve antikanserojenik özellikler sergilediğini göstermiştir. Endüstri pek çok faydalı etkileri nedeniyle doğal gıda koruyucuları, antimikrobiyal ve antioksidanlar ile giderek daha fazla ilgilenmektedir. Bu çalışmada, biyolojik olarak güçlü bir antioksidan olan rosmarinik asit bileşimi, Biberiye yapraklarından ekstrakte edildi. Ultrasonik Destekli Ekstraksiyon ve Yüzey Yanıt Metodolojisi Biberiye yapraklarından antioksidanların ekstraksiyon koşullarını optimize etmek için kullanılmıştır. En yüksek Rosmarinik Asit düzeyi (% 6,77) için öngörülen optimum koşullar % 34,37 etanol, 37,15 dk ekstraksiyon zamanı ve 73,38 °C ekstraksiyon sıcaklığı olarak tespit edilmiştir. Tahmin edilen optimum koşullarda, deneysel değerler tahmin edilen değerlere çok yakındı

Aetiology, course and treatment of acute tubulointerstitial nephritis in paediatric patients: a cross-sectional web-based survey

Background Acute tubulointerstitial nephritis (TIN) is a significant cause of acute renal failure in paediatric and adult patients. There are no large paediatric series focusing on the aetiology, treatment and courses of acute TIN. Patients, design and setting We collected retrospective clinical data from paediatric patients with acute biopsy-proven TIN by means of an online survey. Members of four professional societies were invited to participate. Results Thirty-nine physicians from 18 countries responded. 171 patients with acute TIN were included (54%female, median age 12 years). The most frequent causes were tubulointerstitial nephritis and uveitis syndrome in 31% and drug-induced TIN in 30% (the majority of these caused by non-steroidal anti-inflammatory drugs). In 28% of patients, no initiating noxae were identified (idiopathic TIN). Median estimated glomerular filtration rate (eGFR) rose significantly from 31 at time of renal biopsy to 86mL/min/1.73m(2) 3-6 months later (p90mL/min/1.73m(2)), with only 3% having severe or end-stage impairment of renal function (<30mL/min/1.73m(2)). 80% of patients received corticosteroid therapy. Median eGFR after 3-6 months did not differ between steroid-treated and steroid-untreated patients. Other immunosuppressants were used in 18% (n=31) of patients, 21 of whom received mycophenolate mofetil. Conclusions Despite different aetiologies, acute paediatric TIN had a favourable outcome overall with 88% of patients showing no or mild impairment of eGFR after 3-6 months. Prospective randomised controlled trials are needed to evaluate the efficacy of glucocorticoid treatment in paediatric patients with acute TIN

Interchangeability of a hepatitis A vaccine second dose: Avaxim 80 following a first dose of Vaqta 25 or Havrix 720 in children in Turkey

Introduction This randomised, observer-blind clinical trial conducted in Turkey evaluated the immunogenicity, safety and interchangeability of three paediatric inactivated hepatitis A vaccines in 424 seronegative children between 1 and 15 years of age. Methods Potential subjects were screened for anti-hepatitis A virus (HAV) antibodies prior to receiving a first dose of Avaxim 80, Havrix 720 or Vaqta 25, followed by a second dose of either the same vaccine or Avaxim 6 months later. Anti-HAV antibody concentrations were measured 2 weeks after the first injection, at 24 weeks (before the second dose) and at 28 weeks for the evaluation of the immune response. Results Nearly 80% of the children between 1 and 5 years of age and half of those between the ages of 6 and 10 in the population from which the subjects were recruited were seronegative for HAV antibodies. Two weeks after the first dose, 98.2% of all subjects had anti-HAV antibody concentrations equal to or higher than 20 mIU/mL, believed to be seroprotective, and all subjects were seroprotected before and after the second dose. Anti-HAV geometric mean concentrations (GMCs) 2 weeks after the first dose and before the second were similar in children who received Avaxim and Vaqta (P=0.2), but both were higher than Havrix (P < 0.01). There were no significant differences in the anti-HAV GMCs between the study groups that received two doses of the same vaccine compared with two doses of different vaccines. There were no significant differences in the frequency of any local or systemic adverse events among the study groups following either of the two doses. Conclusion All three vaccines are safe and highly immunogenic in healthy children aged 1 to 15 years. Avaxim 80 may also be given as the second dose when Havrix 720 or Vaqta 25 are given as the first dose. The pattern of seroprevalence seen here is similar to that reported in a number of recent evaluations in Turkey, and are supportive of the routine hepatitis A vaccination of young children

Severe neurological outcomes after very early bilateral nephrectomies in patients with autosomal recessive polycystic kidney disease (ARPKD)

To test the association between bilateral nephrectomies in patients with autosomal recessive polycystic kidney disease (ARPKD) and long-term clinical outcome and to identify risk factors for severe outcomes, a dataset comprising 504 patients from the international registry study ARegPKD was analyzed for characteristics and complications of patients with very early (<= 3 months; VEBNE) and early (4-15 months; EBNE) bilateral nephrectomies. Patients with very early dialysis (VED, onset <= 3 months) without bilateral nephrectomies and patients with total kidney volumes (TKV) comparable to VEBNE infants served as additional control groups. We identified 19 children with VEBNE, 9 with EBNE, 12 with VED and 11 in the TKV control group. VEBNE patients suffered more frequently from severe neurological complications in comparison to all control patients. Very early bilateral nephrectomies and documentation of severe hypotensive episodes were independent risk factors for severe neurological complications. Bilateral nephrectomies within the first 3 months of life are associated with a risk of severe neurological complications later in life. Our data support a very cautious indication of very early bilateral nephrectomies in ARPKD, especially in patients with residual kidney function, and emphasize the importance of avoiding severe hypotensive episodes in this at-risk cohort

Outbreak of Shiga toxin-producing Escherichia-coli-associated hemolytic uremic syndrome in Istanbul in 2015: outcome and experience with eculizumab

BackgroundThis study aims to identify epidemiological and clinical characteristics of patients and report our experience with eculizumab treatment during an outbreak of hemolytic uremic syndrome (HUS) caused by Shiga toxin-producing Escherichia coli (STEC) in Istanbul in 2015.MethodsThirty-two children (21 females, median age 3.25years) were included in this study. Demographic, clinical and laboratory data, and treatment details were retrospectively collected. Renal outcomes were assessed at last follow-up visit. To assess the effect of eculizumab on prognosis of STEC-HUS, subgroup analysis was performed on patients who required dialysis.ResultsA high number of cases occurred within a certain region of Istanbul. Stool samples were cultured from 21 patients (65%), and enteroaggregative E. coli (EAEC; n=7) and enterohemorrhagic E. coli (EHEC; n=3) strains were detected. Rates of dialysis treatment, neurological manifestations, and death were 59%, 25%, and 3%, respectively. Mean follow-up duration was 8.62.6months (range 3-12months). None of the patients (n=25) was on dialysis at the final visit. The complete renal recovery rate was 54%. Nine patients were treated with eculizumab. At final follow-up visit, no differences in estimated glomerular filtration rate, proteinuria level, or hypertension incidence were observed between patients treated with eculizumab and those not treated with eculizumab.Conclusions p id=Par4 An outbreak of EAEC occurred in a specific region of Istanbul. Livestock markets were suspected as the source. Evidence for beneficial effects of eculizumab on renal outcome was not clear in this cohort

Treatment and long-term outcome in primary nephrogenic diabetes insipidus

BACKGROUND: Primary nephrogenic diabetes insipidus (NDI) is a rare disorder and little is known about treatment practices and long-term outcome. METHODS: Paediatric and adult nephrologists contacted through European professional organizations entered data in an online form. RESULTS: Data were collected on 315 patients (22 countries, male 84%, adults 35%). Mutation testing had been performed in 270 (86%); pathogenic variants were identified in 258 (96%). The median (range) age at diagnosis was 0.6 (0.0-60) years and at last follow-up 14.0 (0.1-70) years. In adults, height was normal with a mean (standard deviation) score of -0.39 (±1.0), yet there was increased prevalence of obesity (body mass index >30 kg/m2; 41% versus 16% European average; P < 0.001). There was also increased prevalence of chronic kidney disease (CKD) Stage ≥2 in children (32%) and adults (48%). Evidence of flow uropathy was present in 38%. A higher proportion of children than adults (85% versus 54%; P < 0.001) received medications to reduce urine output. Patients ≥25 years were less likely to have a university degree than the European average (21% versus 35%; P = 0.003) but full-time employment was similar. Mental health problems, predominantly attention-deficit hyperactivity disorder (16%), were reported in 36% of patients. CONCLUSION: This large NDI cohort shows an overall favourable outcome with normal adult height and only mild to moderate CKD in most. Yet, while full-time employment was similar to the European average, educational achievement was lower, and more than half had urological and/or mental health problems

Predictors of poor kidney outcome in children with C3 glomerulopathy

Background C3 glomerulopathy (C3G) is characterized by heterogeneous clinical presentation, outcome, and predominant C3 accumulation in glomeruli without significant IgG. There is scarce outcome data regarding childhood C3G. We describe clinical and pathological features, treatment and outcomes, and risk factors for progression to chronic kidney disease stage 5 (CKD5) in the largest pediatric series with biopsy-proven C3G. Methods Sixty pediatric patients with C3G from 21 referral centers in Turkey were included in this retrospective study. Patients were categorized according to CKD stage at last visit as CKD5 or non-CKD5. Demographic data, clinicopathologic findings, treatment, and outcome data were compared and possible risk factors for CKD5 progression determined using Cox proportional hazards model. Results Mean age at diagnosis was 10.6 +/- 3.0 years and follow-up time 48.3 +/- 36.3 months. Almost half the patients had gross hematuria and hypertension at diagnosis. Nephritic-nephrotic syndrome was the commonest presenting feature (41.6%) and 1/5 of patients presented with nephrotic syndrome. Membranoproliferative glomerulonephritis was the leading injury pattern, while 40 patients had only C3 staining. Patients with DDD had significantly lower baseline serum albumin compared with C3GN. Eighteen patients received eculizumab. Clinical remission was achieved in 68.3%. At last follow-up, 10 patients (16.6%) developed CKD5: they had lower baseline eGFR and albumin and higher frequency of nephrotic syndrome and dialysis requirement than non-CKD5 patients. Lower serum albumin and eGFR at diagnosis were independent predictors for CKD5 development. Conclusions Children with C3G who have impaired kidney function and hypoalbuminemia at diagnosis should be carefully monitored for risk of progression to CKD5

Psychosocial problems and cognitive functions in children with spina bifida

Objectives: This study aims to assess psychosocial functioning in relation to lesion level and ambulatory status in children with spina bifida (SB) and compare them to their peers. Patients and methods: Between March 2013 and May 2013, a total of 31 patients with SB (11 males, 20 females; mean age: 9.4 years; range, 6 to 14.7 years) and 36 typically developing peers (16 males, 20 females; mean age: 9.8 years; range, 6.5 to 14.8 years) were included in the study. All participants were assessed using a semi-structured psychiatric diagnostic interview via the Kiddie Schedule for Affective Disorders and Schizophrenia Present and Lifetime Version (K-SADS-PL), Wechsler Intelligence Scale for Children-Revised (WISC-R), Behavioral Rating Inventory of Executive Functions (BRIEF) parent form, Social Responsiveness Scale (SRS), and Aberrant Behavior Checklist (ABC). Results: In the SB group, the rate of psychiatric disorders was significantly higher (p=0.001) and the SRS scores and the planning and organizational components of the executive function were higher than their peers (p=0.02 and p=0.007, respectively). The psychiatric diagnosis rate, BRIEF, and SRS total scores did not significantly differ according to lesion level and ambulatory status. The BRIEF initiate and organization of materials subtest scores and ABC scores were significantly lower at high lesion levels (p=0.02, p=0.02, and p=0.02, respectively) and non-community walkers (p=0.002, p=0.03, and p=0.003, respectively). Conclusion: Psychiatric disorders, impairment in social responsiveness, and planning and organization components of the executive function are prevalent in children with SB with no intellectual disabilities, compared to their peers. Therefore, psychosocial counseling and multidisciplinary follow-up for SB patients seem to be beneficial