Cholesteatoma is a destructive disease characterized by the progressive expansion of keratinizing squamous epithelium in the middle ear and mastoid, and chronic inflammatory reaction of the subepithelial connective tissue. N-Acetyl-β-d-hexosaminidase (HEX) catalyzes the release of terminal non-reducing N-acetyl-d-hexosamine residues acting on glucosides and galactosides in glycoproteins, GM2-ga...

This work aimed to determine the effect of biodegradable superabsorbent hydrogel based on cellulose derivatives growth and yield sweet corn (Zea mays saccharata Sturt) dry land. The design used was a completely randomized (CRD). applied treatments consisted four levels hydrogel: without
 (control), 2, 4, 6 g per plant, respectively. Each treatment repeated six times in this experiment, yie...

Case Report History J. McA., a male aged 47 years, was first seen at a medical clinic of the Royal Southern Hospital on June i, 1954. He was complaining of attacks of unconsciousness for the past ten months. At first he had two or three fits a week, but they were now occurring as often as four or five times a day. The attacks were preceded by a buzzing in the left ear and were often followed by...

Traumatic tympanic membrane (TM) perforations heal spontaneously ranging from 78.7% to 88%. Otologists recommend a golden rule, keep the ear dry, as an important factor influencing TM healing. This way, Araujo et al., in their article “The Topical Use of Insulin Accelerates the Healing of Traumatic Tympanic Membrane Perforations,” describe a control group of Wistar rats in which traumatic perfo...

Spontaneous walking by Ixodes ricinus nymphs in the horizontal plane was investigated within choice arenas to test whether these ticks move preferentially up a humidity gradient, and whether they are attracted towards host odour, specifically volatile substances from the back of a dog's ear. Responses by ticks with high and low fat contents and in different states of hydration were compared. Ti...

Both the increasing usage of intratympanic medication to the inner ear through the round window and the popularity of cochlear implantation have raised interest in the anatomy of the round-window niche (RWN). The objectives of this study were to measure the RWN and to standardize a computed tomographic projection for measuring it. We included patients of all ages who underwent computed tomograp...

in order to investigate the contribution of ear photosynthesis and cytokinin in determining grain sink size, a pot study was conducted during january to june 2005 in cereal glasshouse of faculty of agriculture of karaj, iran. experiment was conducted in a complete randomized design with a factorial arrangement of two factors, three replications and four pots in each plot. factors included culti...

background and aim: aging is accompanied with changes in cognitive capacities. in spite of advances in neural imaging technologies, there is not a straightforward method to observe cognitive functions. for assessing brain functions, researchers mainly use psychometric tests. the aim of this study was using consonant-vowel (cv) dichotic test as a non-invasive behavioral test for auditory attenti...

Introduction: Chronic otitis media (COM), a persistent and durable inflammation and infection of the middle ear, is a common disorder. Alterations in the contralateral ear in sufferers have been observed in recent years. Because only a few studies have been reported in this area, we performed this study in order to assess alterations in the contralateral ear of patients with COM.   Materials an...