Results: Using acetate buffer pH 5.2 containing 1 % SDS, both methods gave different dissolution profiles. The paddle apparatus tended to give faster rate of dissolution (approx. 88.5 % during the first 20 min of the experiment), which was probably caused by higher agitation and greater surface area of the drug-dissolution medium in a vessel. In the flow-through cell method, total drug release was definitely 17-AAG research buy slower and was observed after 2 to 5 h; at a flow rate of
16 ml/min, more than 80 % of the drug dissolved after 30 min of the test. It was noticed that raising the flow rate of the dissolution medium caused significantly higher drug release.
Conclusion: The results demonstrate that the flow-through cell method is reproducible and can be successfully used for evaluating in vitro dissolution
of clotrimazole from non-modified release tablets. The slower rate of dissolution obtained in the flow-through cell method would help to distinguish between different formulations.”
“Background: Severe Meniere’s disease (MD) may be debilitating and compromising, despite intensive medical treatment. Vestibular neurectomy (VN) is considered an effective surgical treatment for disabling MD. Our aim was to analyse the medium-to long-term outcome after retrosigmoid VN with special regard to vertigo, quality of life (American Academy of Otolaryngology-Head and Neck Surgery criteria), and pure tone average (PTA).
Methods: Retrospective evaluation of patients with disabling MD treated with retrosigmoid
VN at Mizoribine cost the university hospital of Bern (1992-2009), after unsuccessful attempts at medical treatment. Demographics, https://www.selleckchem.com/products/cb-839.html clinical signs and symptoms, quality of life, thresholds of hearing, and adverse events were documented at baseline, 1 week, 12 months, and 24 months after surgery.
Results: Medium to long-term follow-up data were available from 44 of 78 patients, who had undergone retrosigmoid VN (19 men; mean age, 50.3 +/- 11.0 yr). Vertigo disappeared in 34 (77.3%) of 44 patients and improved in 6 (13.6%) of 44 patients. Quality of life significantly improved postoperatively (mean American Academy of Otolaryngology-Head and Neck Surgery, 0.68 +/- 1.14 [1 yr] and 0.57 +/- 1.19 [2 yr] versus 5.11 +/- 0.66). Mean PTA decreased (52.3 +/- 19.2 dB versus 56.2 +/- 21.6 dB [1 wk] and 60.4 +/- 20.5 dB [1 yr]; p < 0.001). Ten (22.7%) of 44 patients showed improved PTA after VN. These patients had significantly higher baseline PTA (69.4 dB versus 47.9 dB; p = 0.001).
Conclusion: Retrosigmoid VN is a valuable and safe surgical option to treat disabling MD that has proved resistant to medical treatments. It may also be indicated for patients with pre-operative severely impaired thresholds of hearing, in whom a certain hearing gain may be observed.”
“Purpose: Impairment of subchondral bone density and quality aggravates cartilage damage in osteoarthritis (OA).