Classically, ascending aortic dissection (AD) presents as sudden, severe chest pain that is tearing type and radiates to the back. Herein, we present a rare case of severe aortic regurgitation with silent ascending AD, which had no chest pain symptoms. The aortic valve apparatus probably masked this AD; therefore, it was not detected by echocardiography and during the surgery.

background: malathion (mal) is a choice insecticide in the stored grain in different countries. the aim of the present study is to evaluate toxicological effects of 30-day intake of mal on the male reproductive system of wistar rats. methods: this research was ethically approved by the local authority at faculty of medicine, monastir, tunisia. three mal treated groups received 1 ml corn oil con...

background: due to common use of methylphenidate (mph) for the treatment of attention deficit hyperactivity disorder (adhd) and the role of the reproductive system in the production of gametes, studying the effects of this medication on the morphometry of testes, serum testosterone concentration, leydig cells function, and fertility rate was the aim of this study. methods: twenty seven male mic...

conclusions it seem that melatonin due to its antioxidant properties, if added to glycerol based media, reduces the harmful effects of freezing-thawing process, and protects seminiferous tubules histological structure from oxidative injury. results the result showed that supplementation of glycerol based media with melatonin has reduced injury to histological structure of seminiferous tubules i...

methyl tertiary-butyl ether (mtbe) is used to reduce carbon monoxide and ozone in urban air and to boost fuel octane. there is a lack of knowledge in the literature about the histomorphometric changes of the testis following exposure to mtbe. therefore, this experimental study was performed to determine the effect of oral exposure to mtbe on histologic and histomorphometric changes of testis in...

OBJECTIVE The purpose of this study was to compare the size, shape, echogenicity, and blood flow of the appendix testis on sonography in control subjects and in patients with a torsed appendix testis and to evaluate the usefulness as well as the limitations of these criteria. METHODS This was a retrospective analysis of 11 lesions with torsed appendix testes and 15 normal appendix testes in 1...

The testis has been identified as the organ in which a large number of tissue-enriched genes are present. However, a large portion of transcripts related to each stage or cell type in the testis still remains unknown. In this study, databases combined with confirmatory measurements were used to investigate testis-enriched genes, localization in the testis, developmental regulation, gene express...

A key question of auction design is whether to use an ascending-bid or a sealed-bid format. The critical distinction between formats is that an ascending auction provides the bidders with information through the process of bidding. This information is a two-edged sword. It may stimulate competition by creating a reliable process of price discovery, by reducing the winner’s curse, and by allowin...