Effects of chronic lead intoxication on rat serotoninergic system and anxiety behavior

Chronic lead exposure has been shown to produce behavioral disturbances in human and animal models. These disturbances are associated with alterations in monoaminergic neurotransmission in the central nervous system (CNS), some of which have been attributed to serotonin (5-HT). This study was undertaken to investigate the chronic effects of lead exposure on the serotoninergic system in the dorsal raphe nucleus (DRN) and the consequences of its toxicity on rat behavior. Adult male Wistar rats were chronically exposed for 3 months to 0.5% lead acetate in drinking water. The serotoninergic system was evaluated using immunohistochemistry and the anxiety behavior was assessed by the light/dark box test. The results show that chronic lead exposure induces a significant increase of blood and brain lead levels in treated rats compared with controls. The density of the immunoreactive serotoninergic cell bodies was significantly higher in treated rats in all parts of the DRN. Assessment of animal behavior using the light/dark box test showed that lead-treated rats spent significantly more time in the light chamber compared with controls (P = 0.001). These findings suggest that lead exposure may possibly induce increased anxiety as a consequence of changes in neuronal 5-HT content in the DRN.     

Tumeur myofibroblastique inflammatoire de la vessie

Myofibroblastic inflammatory tumor is considered as an intermediate neoplasm according to the WHO classification. It can occur in different organs: lung, pancreas, mesentery and uterus. The localization in the bladder is unusual. We report a case of a 38-year-old patient who presented with hematuria. Echography showed a 3 cm tissular structure of the bladder. Histological analysis and immunohistochemistry concluded to the diagnosis of myofibroblastic tumor of the bladder. The present work will give a general view of the myofibroblastic tumor, and will review its differential diagnosis.     

Socioeconomic circumstances and incidence of chronic obstructive pulmonary disease (COPD) in an urban population in Sweden

The association between socioeconomic circumstances and incidence of chronic obstructive pulmonary disease (COPD) was investigated in an urban population in Sweden. The study included all 40–89 year-old inhabitants in Malmö, Sweden (N?=?117,479) without previous hospitalization due to COPD, who were followed over 14 years for COPD related hospital admissions. The Malmö Preventive Project (MPP) cohort (n?=?27,358) with information on biological and lifestyle factors was also used to study the association between socioeconomic circumstances and COPD. The Swedish hospital discharge register was used to record incidence of COPD hospitalizations. A total of 2,877 individuals (47.5% men) were discharged from hospital with COPD as the primary diagnosis during follow-up in Malmö. Low annual income (hazard ratio (HR): 2.23; 95%CI: 1.97–2.53, P?P?P?P?1, BMI, age and sex. However, socioeconomic circumstances were not associated with COPD in analyses restricted to never smokers. Low socioeconomic circumstances were associated with an increased risk of COPD after adjustments for biological and lifestyle risk factors including smoking status. However, this relationship was not significant in those who never smoked.     

Primary Immunodeficiency Disorders: Survey of Pediatricians in Kuwait

INTRODUCTION: Early diagnosis of primary immunodeficiency disorders (PID) is critical so life saving interventions can be implemented to avoid significant morbidity and mortality. Unfortunately, they are frequently misdiagnosed, which results into significant delay in diagnosis. This study aimed to determine the knowledge and practice of pediatricians in Kuwait about PID. MATERIALS AND METHODS: A 66-item self-administered questionnaire was designed and distributed to the pediatricians working at all six governmental hospitals to measure their knowledge and practice about PID. A total of 244 pediatricians (78.4%; 143 males and 101 females) participated in the study. The mean age of participants was 40 years, and the mean number of years working in pediatrics was 13 years. The mean overall score was 59.6%, whereas the mean score in clinical presentation section was 63%, in associated diseases and syndromes section 58%, and in laboratory investigations section 51%. Only 26% of the participants answered correctly at least 2/3 of the questions (67% of the questions). CONCLUSION: This survey demonstrates that there is universal deficiency in both the knowledge and practice of pediatricians in the field of PID. Implementation of strategies to improve the awareness of pediatricians about PID is critical so early therapeutic interventions can be done to improve the health and prevent morbidity and mortality.     

Primary hepatic lymphoma of mucosa-associated lymphoid tissue type: a case report with cytogenetic study

Primary hepatic lymphoma of mucosa-associated lymphoid tissue type is extremely rare. Only 38 cases have been reported to date. A case of a 59-year-old man with Helicobacter pylori-resistant gastric ulcers and Buerger disease who was followed up since 1999 is reported. A 2-cm hepatic nodule was incidentally found during partial gastrectomy and corresponded to mucosa-associated lymphoid tissue-type lymphoma without underlying liver disease. Molecular studies showed a clonal immunoglobulin heavy-chain gene rearrangement. Investigations for the mucosa-associated lymphoid tissue lymphoma-associated translocations t(11;18) and t(14;18), as well as the t(3;14)(q27;q32), were negative, whereas trisomy 3 and trisomy 18 were detected.