Full text
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| Author(s): |
Janaina Bosso Jose da Silva
Total Authors: 1
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| Document type: | Master's Dissertation |
| Institution: | Universidade Estadual de Campinas (UNICAMP). Faculdade de Ciências Médicas |
| Defense date: | 2006-04-08 |
| Examining board members: |
Paula Ribeiro Villaça;
Nelci Fenalti Hoer
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| Advisor: | Margareth Castro Ozelo; Joyce Maria Annichino Bizzacchi |
| Abstract | |
Iontophoresis is technique of transferring drugs by an electric flow. The therapeutic benefits of introducing drugs by iontophoresis include lowering of systematic side effects and the local action of medication with a larger concentration into the damage area, where its action is more effective and prolonged. Besides that, the hemophilic patients are avoided to get venous puncture or an injection into their joint. The use of iontophoresis takes the idea of direct intervention in acute hemarthroses and chronic synovitis in one non aggressive way. First of all we created a protocol in association with Nuclear Medicine Department of the Clinical Hospital of UNICAMP and we standardize cintilographic experiments in humans to evaluate the transdermal dynamics delivered by iontophoresis, confirming iontophoretics mechanism. Once it proved the iontophoretic mechanism, we evaluate in a swine experimental model the behavior of drugs with potential use in hemophilia (e-aminocaproic acid during the acute episodes of hemarthroses; hyaluronic acid and oxitetracycline clorhydrate to treat chronic cases) by electrospray ionization mass spectrometry. The use of haemostatic drugs during the acute treatment of hemarthroses, besides the treatment of chronic synovitis, allows in long and short period of time, once recover faster of the joints also reduce the final consumption of replacement products. In swine protocol, we observed that e-aminocaproic acid and oxitetracycline clorhydrate are drugs which may actually cause and be used in iontophoretics¿s protocols. However new complementary studies are necessary to make possible the use of hyaluronic acid, once it¿s a large polissacaride. We believe that others studies using different methods more sensitive of drug quantifications should be used with this purpose of accomplishment in the future. The evaluation of the iontoforetic application¿s effect of these drugs in murino¿s experimental models (knockout mice with hemophilia A) was performed by the histologic analysis, showing that in both groups (EACA and OTC) iontophoretic treatment resulted in a lower average of damage when comparing the treated limb and the one not treated. (AU) | |