Echocardiographic Assessment of Pulmonary Hypertension in Neonates with Congenital Diaphragmatic Hernia Using Pulmonary Artery Flow Characteristics.

Background: Assessment of pulmonary hypertension (PH) is essential in neonates with congenital diaphragmatic hernia (CDH). Echocardiography is widely established to quantify PH severity, but currently used parameters have inherent limitations. The aim of our study was to investigate the prognostic utility of the index of the pulmonary artery acceleration time to the right ventricular ejection time (PAAT:ET) in CDH neonates assessed using echocardiography.

Parry-Romberg syndrome: is it a "relapsing-remitting" disease?

Parry-Romberg syndrome, also known as progressive hemifacial atrophy, is a rare, slowly progressive disorder characterized by unilateral, painless atrophy of the skin and subcutaneous tissue of the face. Neurological manifestations such as epilepsy, migraine and trigeminal neuralgia are relatively common and accompany in 15-20% of cases. Various etiologies such as infection, trauma, embryonic developmental dysfunction, sympathetic dysfunction and autoimmune disorders have been suggested as possible causes.

Multiple Sclerosis: Diagnosis and Differential Diagnosis.

The diagnostic criteria for multiple sclerosis (MS) have been continuously evolved since 1950's, and gained speed parallel to the development of detailed laboratory methods. The common aim for all the defined criteria up to now, is to establish the dissemination in space and time of the clinical picture caused by the lesions in the central nervous system (CNS), and to rule out other diseases which might mimic MS. There is no definite measure or laboratory marker for the diagnosis of MS, yet.

Ionizing radiation induces structural and functional damage on the molecules of rat brain homogenate membranes: a Fourier transform infrared (FT-IR) spectroscopic study.

Humans can be exposed to ionizing radiation, due to various reasons, whose structural effects on biological membranes are not well defined. The current study aims to understand the ionizing radiation-induced structural and functional alterations in biomolecules of brain membranes using Fourier transform infrared (FT-IR) spectroscopy using rat animal models. For this purpose, 1000 cGy of ionizing radiation was specifically directed to the head of Sprague Dawley rats.

Impacts of salinity and fish-exuded kairomone on the survival and macromolecular profile of Daphnia pulex.

Global warming is already causing salinization of freshwater ecosystems located in semi-arid regions, including Turkey. Daphnids, which are important grazers on phytoplankton and a major food source for fish and invertebrates, are sensitive to not only changes in salinity levels, but also presence of predators. In this study, the interactive effect of salinity toxicity (abiotic factor) with predation pressure mimicked by the fish-exuded kairomone (biotic factor) and the effect of salt acclimation on daphnids were investigated.