Increased expression of CD44 in hypertrophied ligamentum flavum and relevance of splice variants CD44v5 and CD44v6

Background  

The most common spinal disorder in the elderly is lumbar spinal stenosis (LSS), which results in part from ligamentum flavum (LF) hypertrophy. Although prior histologic and immunochemical studies have been performed in this area, the pathophysiology of loss of elasticity and hypertrophy is not completely understood. The purpose of this immunohistological study is to elucidate the role of CD44 and its splice variants CD44v5 and CD44v6 in the hypertrophied LF obtained from patients with lumbar spinal stenosis (LSS).     

Multiple giant prostatic urethral stones with an ureteral stone in a young patient

Giant prostatic urethral stones have been reported as a very rare entity, and the etiology of these stones is not clear. We report a case of a 40-year-old man with giant multiple prostatic urethral stones whereby the entire gland was replaced, and a big ureteral stone presented with voiding difficulty and recurrent urinary tract infections. In the literature, to our knowledge, this is the youngest case wherein giant prostatic urethral stones coexisted with a big ureteral stone. Many different-sized stones were observed endoscopically, some protruding into the urethra, and some filling different cavities on the prostate. Following cystoscopy, multiple giant prostatic stones weighing a total of 151 g were removed by the open retropubic route. We treated the big ureteral stone endoscopically.     

Polymorphisms of the angiotensin converting enzyme and angiotensin II type 1 receptor genes and renal scarring in non-uropathic children with recurrent urinary tract infection

AIM: The aim of this study was to investigate whether the angiotensin converting enzyme (ACE) and angiotensin II type 1 receptor (A1166C) gene polymorphisms were associated with the renal scar formation secondary to recurrent urinary tract infection in children without uropathy. METHODS: The polymorphisms were investigated by polymerase chain reaction in 97 children (81 females, 16 males; age, 2.5-13 years) with recurrent urinary tract infection and 100 healthy controls as a single centre study. Children with vesicoureteral reflux, bladder dysfunction and other uropathies were excluded. The dimercaptosuccinic acid (DMSA) scan performed at least 3 months after a proven urinary tract infection and the result of the last DMSA was taken into consideration. RESULTS: Renal scarring was found in 30 patients (30.9%) using DMSA scan. The number of urinary tract infection attacks was significantly higher in patients with renal scarring compared with children without scarring (P<0.05). The follow-up period and male/female ratio of patients with or without renal scarring was similar (P>0.05). Age at the first urinary tract infection was lower in the group with scarring. The ACE insertion/deletion genotype distribution and D allele frequency were similar between patients and controls (P>0.05), and in patients with renal scarring and those without renal scarring. Also, the angiotensin II type 1 receptor gene polymorphism was not associated with renal parenchymal damage (P>0.05). CONCLUSION: The results indicated that the ACE insertion/deletion and angiotensin II type 1 receptor gene polymorphisms were not independent risk factors for renal scar formation in recurrent urinary tract infection of paediatric patients without uropathy.     

Multifocal eosinophilic granuloma with sequential periodontitis-like lesions

Abstract Eosinophilic granuloma (EG) is the localized and mildest form of the triad commonly known as Langerhans cell histiocytosis. This report describes a case manifesting itself as a periodontal problem with the localized osseous lesions in jawbones which was first diagnosed as early-onset periodontitis. Later on. the diagnosis of EG was established, relying on histopathological and immunohistochemical evaluations. Immunohistochemical findings confirm that a minor component of cell aggregates is phenotypically related to Langerhans cells among the sheet-like accumulations of histiocytes and eosinophils. The aetiology of the disease remains largely unknown. Although surgical curettage of lesions is usually effective in treatment of EG of bone, corticosteroids might be used as an adjunctive. This multifocal case of EG stresses the importance of clinical follow-up examinations, since the sequential lesions appear with irregular intervals, and this may cause diagnostic problems as well as a delay in starting the treatment regimen.     

Evidence for the role of dialysis hypoxemia in the pathogenesis of hemodialysis-induced rise in tissue-type plasminogen activator

It is well known that hemodialysis (HD) causes a rise in plasma tissue-type plasminogen activator (t-PA). Although there have been several suggested mechanisms responsible for this effect of HD, the precise cause has not been well understood yet. Another complication of HD, when performed with acetate-containing dialysate, is hypoxemia, which is commonly observed during the first hour of the session. The purpose of this study was to investigate the relationship between dialysis hypoxemia and HD-induced t-PA changes during the first two hours of HD.

HD caused significant increase in plasma t-PA antigen levels. When individual t-PA profiles versus time were examined, two patterns were observed. Whilst ten subjects (%56) experienced minimal or no increase, t-PA antigen level of the remaining eight subjects began to rise at 30 minutes and continued at that level up to 90 minutes, when the last samples were drawn. The courses of pO₂ were also different; whilst the former group had “early-onset and short-term” hypoxemia, the latter had “late-onset and prolonged” hypoxemia. The amount of increase in t-PA antigen and the amount of decrease in pO₂ were correlated at 60 and 90 minutes of the HD session.

Thus, it is concluded that dialysis hypoxemia may contribute to HD-induced rise in plasma t-PA levels. Further studies comparing different dialysates and dialyser membranes are required to confirm this hypothesis.     

An integrative treatment approach to child and adolescent suicidal behavior

The suicide rate for adolescents has tripled during the last 30 years in North America and many Western countries. Although some high risk factors have been defined, the literature is weak on the prevention and treatment issues. This article defines an integrative treatment approach for self-destructive behavior. This model attempts to integrate the well-recognized theoretical and therapeutic approaches such as biologic, psychodynamic, behavioral, cognitive, self-directed, strategic, experiential, and systemic frameworks. In the integrative approach, the therapist integrates the use of drug therapy and child, group, milieu, and family therapy, depending on the needs of each child. After a brief presentation of the author's comprehensive, in-depth study with 139 suicidal children and adolescents, the commonly seen family reactions to suicidal behavior were described. Family stage reactions of shock and fear, panic and action, guilt, resentment, reparation, and partial recovery are defined with case examples. The complementary nature of the supportive and therapeutic work for the families of suicidal children and adolescents with other preventative and therapeutic interventions is highlighted.     

The protective effect of hydrated sodium calcium aluminosilicate against the adverse effects of aflatoxin B1 on D. melanogaster

The main aim of this study was to investigate the effects of Aflatoxin B1 (AFB1) and Aflatoxin B1 + hydrated sodium calcium aluminosilicate (HSCAS) on various developmental stages of Drosophila melanogaster. Different concentrations of AFB1 and HSCAS + AFB1 were administered during the developmental periods of the fly (egg, larvae and pupae). When the F1 progeny of control and application groups were compared, AFB1 was found to extend the process of metamorphosis and decrease the total number of offspring. However, these negative effects were inhibited with HSCAS treatment at different concentrations (5.0 and 10.0 ppm). These results suggest that HSCAS could effectively inhibit AFB1-induced abnormalities in the developmental stages of D. melanogaster.     

Parental satisfaction with pediatric day case surgery

BACKGROUND AND AIMS: Children make excellent candidates for day case surgery. Satisfaction is an important measure of the outcome. The aim of this study was to establish the degree of parental satisfaction with day-case surgery for their children. MATERIALS AND METHODS: Parents of one hundred children were questioned. They were asked to answer questions on their level of satisfaction in several areas; communication with doctors (surgeon and anesthesiologist), physical conditions, staff's care, patients' problems and 2 open ended questions. RESULTS: Parents were most satisfied with nursing care and most dissatisfied with physical conditions. Ninetyseven per-cent of parents stated that, if given a choice they would opt for day case surgery for their child again. CONCLUSIONS: There is a high rate of satisfaction with day case surgery, however, considerable effort is needed to prepare better physical conditions, better time schedule organizations, more anesthesia outpatient clinic consultations.