Guidelines for the use and interpretation of assays for monitoring autophagy (4th edition)1.

In 2008, we published the first set of guidelines for standardizing research in autophagy. Since then, this topic has received increasing attention, and many scientists have entered the field. Our knowledge base and relevant new technologies have also been expanding. Thus, it is important to formulate on a regular basis updated guidelines for monitoring autophagy in different organisms. Despite numerous reviews, there continues to be confusion regarding acceptable methods to evaluate autophagy, especially in multicellular eukaryotes. Here, we present a set of guidelines for investigators to select and interpret methods to examine autophagy and related processes, and for reviewers to provide realistic and reasonable critiques of reports that are focused on these processes. These guidelines are not meant to be a dogmatic set of rules, because the appropriateness of any assay largely depends on the question being asked and the system being used. Moreover, no individual assay is perfect for every situation, calling for the use of multiple techniques to properly monitor autophagy in each experimental setting. Finally, several core components of the autophagy machinery have been implicated in distinct autophagic processes (canonical and noncanonical autophagy), implying that genetic approaches to block autophagy should rely on targeting two or more autophagy-related genes that ideally participate in distinct steps of the pathway. Along similar lines, because multiple proteins involved in autophagy also regulate other cellular pathways including apoptosis, not all of them can be used as a specific marker for bona fide autophagic responses. Here, we critically discuss current methods of assessing autophagy and the information they can, or cannot, provide. Our ultimate goal is to encourage intellectual and technical innovation in the field

Prevalence and distribution of ringworm infections in primary school children in parts of Eastern, Nigeria

A study on the prevalence and distribution of ringworm infection amongst primary school children in northern Ebony State of eastern Nigeria was carried out between November 2002 and June 2003. Of the 279 pupils sampled randomly from four schools, 59 (21.1%) had ringworm infection. While only two genera of fungi Microsporum and Trichophyton were isolated, six species viz: M. canis (11.9%), M. andoninii (20.3%), T. sondamense (20.3%), T. mentagrophytes (22.0%), T. schoenleinii (15.3%) and T. quinckeannan (10.2%) were also encountered. The distribution of ringworm among schools was not statistically significant (P > 0.05). Both male and female pupils with in the age bracket of 5-7 years were significantly infected than other age categories (P0.05). M. andoninii was more predominant over others in males while T. mentagrophytes was more prevalent in female pupils. Poor infrastructures (houses and classroom), children playing with animals, the Nigerian environmental vis-a-vis personal uncleaniness by pupils are contributing factors to the high frequency and severity of ringworm in the area. Journal of Applied Sciences and Environmental Management Vol. 9(3) 2005: 21-2