Allergy and risk of acute lymphoblastic leukemia among children: A nationwide case control study in Greece

Background: Several reports point to inverse associations between allergies and ALL; yet, no study has explored this link using both self-reported-data on allergic history and biomarkers of atopic sensitization. Methods: Clinical information for the variables of interest was available for 252 out of 292 cases of childhood (0–14 years) ALL, newly diagnosed across Greece over a 4.5 year period as well as for 294 hospital controls. Allergen-specific-IgEs, as markers of allergic predisposition, against 24 most prevalent respiratory and food allergens, were determined, using an enzyme immunoassay procedure for 199 children with ALL and 113 controls. Cases were compared with controls through frequency distributions and unconditional multiple logistic regression models to estimate odds ratios (ORs) and 95% confidence-intervals (CIs) regarding associations of allergy with childhood ALL. Results: Self-reported-allergic history overall (OR: 0.49, 95%CI: 0.34–0.72) and practically each one of its main components (respiratory, food, any other clinical allergy) were strongly and inversely associated with ALL. Likewise, the serum IgE inverse association was of the same magnitude (OR: 0.43, 95%CI: 0.22–0.84) mainly contributed by food IgE (OR: 0.39, 95%CI: 0.18–0.83). Conclusion: Beyond the already established inverse association of allergic history with childhood ALL, a same magnitude association is evident when serologic markers of allergic predisposition are used as an alternative measure of allergy. Further research with more appropriate study designs is needed to better understand possible associations between prior allergy and childhood ALL risk.     

Oral health status of elderly hospitalised psychiatric patients

doi: 10.1111/j.1741‐2358.2012.00633.x Oral health status of elderly hospitalised psychiatric patients Objectives: This study investigated the oral health status of an elderly mentally ill population hospitalised in a psychogeriatric ward in Athens. Materials and methods: A structured interview recorded sociodemographic and dental data, and an oral examination recorded the status of oral tissues and the existing dentures. The patients’ medical records were examined by a hospital’s physician. Results: One hundred and eleven patients with a mean age of 73 years participated in the study. Almost half of them suffered from schizophrenia. Forty percent were completely edentulous but only 38.6% of them used a pair of dentures. The dentate had an average of 12.9 teeth, 50.7% of them had at least one decayed tooth, 44.8% needed at least one extraction, and only 26.7% had filled teeth. The dental hygiene was poor in 83.6% of the patients. More than 60% of the dentures had a defect. Multiple regression analyses showed that increasing age and dementia were significantly related to fewer remaining teeth, and the use of atypical antipsychotics was related to fewer caried teeth. Conclusion: The oral health of the elderly psychiatric patients was very poor. Access to dental care should improve, and the health care staff should be trained to identify oral problems.     

Study of prophylaxis by didecyl dimethyl ammonium chloride against herpes simplex virus infection in nude mice

Primary or recurrent viral infections, especially by herpetoviridae, with viraemias--after organ transplants, for example--are a serious medical problem which can affect the prognosis for survival. An experimental protocol for the prevention of infection by a herpes simplex virus type 1 was applied to Nude mice infected via inhalation. It suggests the possibility of appreciably limiting viral infection by the parenteral use of didecyl dimethyl ammonium chloride. The results are encouraging and could lead to further experimental studies to prove the efficiency of this molecule whose level of toxicity can be disassociated from its antiviral action to limit the infections by other enveloped viruses.     

Evaluation of different malachite green brands in the performance of rappaport's medium

Summary Three malachite green dyes, Merck's concentrated for microscopy and bacteriology (old), Merck's malachite green oxalate (oxal), and Difco's malachite green, were used for preparation of 3 batches of Rappaport's medium. These media were tested for growth of 40 Salmonella serotypes and for inhibition of competing organisms. All Rappaport's media behaved similarly and supported excellent growth of 38 serotypes. When Salmonella cultures were diluted in fecal-saline suspensions and inoculated in all Rappaport media the competing organisms in these suspensions were efficiently inhibited. However, the inhibition of competing organisms was less efficient when Rappaport's media were inoculated with preenrichment cultures of 20 samples of minced meat in buffered peptone water. In this respect, Difco's malachite green was clearly inferior to the other two dyes. It is concluded that Merck's malachite green oxalate is as efficient as the old dye of the same brand which is no longer produced, and can replace it in the preparation of Rappaport's medium.