Uğur Günter Akbulut

Learn More
OBJECTIVES One of the major causes of chronic nasal airway obstruction is disease of the inferior turbinate. However, there is no agreement on how to deal with this problem. Comparison was made of the nasal functions after treatment by radiofrequency tissue ablation, laser ablation, and partial turbinectomy using subjective symptom scores and objective(More)
Acinic cell carcinoma represents approximately 2.5% to 4% of all salivary gland tumors and 13% of all malignant parotid tumors. The nasal septum is a rare site of an acinic cell carcinoma. We have treated such a tumor in a 47-year old man who had been asymptomatic for the past 1.5 year. This is the second reported case of acinic cell carcinoma at the nasal(More)
alpha-Amylase was immobilized into photographic gelatin by chemical cross-linking with chromium (III) acetate and chromium (III) sulphate. Cellulose triacetate film strips, enabled simple handling when coated with an alpha-amylase-gelatin mixture, accomplishing a high degree of durability during consecutive immersions into reaction media. The optimum(More)
OBJECTIVES This study aimed to evaluate the techniques used in open structure rhinoplasty operations, together with a presentation of our results and experience. PATIENTS AND METHODS The study included 122 patients (64 males, 58 females; mean age 27 years; range 17 to 48 years) who underwent open structure rhinoplasty. Of these, 72.9% had primary, 9% had(More)
NADH-cytochrome b5 reductase was isolated and partially purified from rabbit liver microsomes. It was immobilized into gelatin by chemical cross-linking. Chromium (III) acetate was used as cross-linker. The effects of pH and temperature on the immobilized cytochrome b5 reductase were investigated. The reusability and storage stability of immobilized enzyme(More)
Squamous cell carcinoma arising from upper aerodigestive tract carries with it a significant morbidity and mortality and, over the last few decades, its incidence has steadily increased. The management of patients requires thorough investigation to determine the local, regional, and distant extent of the disease, and treatment options include surgery,(More)
This paper reports a novel approach in the electrode immobilization of an enzyme, invertase, by electrochemical polymerization of pyrrole in the presence of enzyme. The polypyrrole/invertase and polyamide/polypyrrole/invertase electrodes were constructed by the entrapment of enzyme in conducting matrices during electrochemical polymerization of pyrrole.(More)
Urease enzyme was immobilized in photographic gelatin by chemical cross-linking using formaldehyde, glutaraldehyde and chromium (III) acetate. The effects of enzyme and cross-linker concentrations, temperature, incubation time and pH on urea hydrolysis were investigated. Effect of reuse on the activity of immobilized enzyme was also studied. Glutaraldehyde(More)
Glucose oxidase was immobilized into photographic gelatin hardened by chromium(III) sulphate. The enzyme-gelatin mixture was coated on polyester film strips which allowed easy and simple handling during assays. The effect of gelatin and cross-linker concentrations on water content and enzymatic activity was studied. The effect of pH during immobilization(More)
Impression Cytology (IC) is a noninvasive and easily repeated technique for investigating many pathologies of the conjunctiva such as dry eye, drug toxicities, and melanoma. In addition to skin tests and determination of serum IgE levels, the presence of eosinophilia in the nasal mucosa and the conjunctiva is an important diagnostic factor in allergic(More)