Sugiyanto .
Departement of Pharmacological and Toxicological, Faculty of Pharmacy, University of Gadjah Mada, Yogyakarta.

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Journal : INDONESIAN JOURNAL OF PHARMACY

Chemopreventive effect of ethanolic extract of Gynura procumbens (Lour), Merr on the carcinogenesis of Rat breast cancer development Meiyanto, Edy; Susilowati, Sri; Tasminatun, Sri; Murwanti, Retno; ., Sugiyanto
INDONESIAN JOURNAL OF PHARMACY Vol 18 No 3, 2007
Publisher : Faculty of Pharmacy Universitas Gadjah Mada, Yogyakarta, Skip Utara, 55281, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (248.982 KB) | DOI: 10.14499/indonesianjpharm0iss0pp154-161

Abstract

Gynura procumbens (Lour) Merr., empirically, used to prevent cancer development and has been proven to be able to suppress lung cancer development. The aim of this research is to examine the potential of ethanolic extract of G. procumbens to suppress DMBA-induced breast cancer development. Sprague Dawly Rats were used in this research and were grouped as indicated treatment. Ethanolic extract of G. procumbens was administered into 3 levels of doses, namely 250, 500, and 750 mg/kgBW. Tumor development was examined by palpation every week and terminated at week 16th after the end of DMBA treatment. The result showed that extract treatment at the dose of 250, 500, and 750 mg/kgBW reduced tumor incidence by 60%, 30 %, and 20 % respectively. The doses of 500 and 750 mg/kgBW exhibited strong suppression of tumor multiplicity, where as the dose of 250 performed less potential suppression. In conclusion, ethanolic extract of G. procumbens performs chemopreventive effect to suppress breast cancer development at the dose of 250 mg/kgBW.Key words : chemopreventive, Gynura procumbens (Lour) Merr, breast cancer.
IDENTIFICATION OF PENTAGAMAVUNON-0 METABOLITE IN FAECES AFTER INTRAVENOUS INJECTION OF WHITE-MALE SPRAGUE DAWLEY-DERIVED RATS Hadi, Feriyanto Trisna; ., Sugiyanto; ., Oetari
INDONESIAN JOURNAL OF PHARMACY Vol 12 No 2, 2001
Publisher : Faculty of Pharmacy Universitas Gadjah Mada, Yogyakarta, Skip Utara, 55281, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (110.064 KB) | DOI: 10.14499/indonesianjpharm0iss0pp72-78

Abstract

The compound 2,5-bis-(4’-hydroxy-3’-methoxybenzilidin) cyclopentanone or Pentagamavunon-0 (PGV-0) as the new anti-inflamatory drug candidate, is one of curcumin structure modification. Identification of metabolites in faeces could be strengthen the whole information about biotransformation of drug and could be use for studying on PGV-0 metabolites which are excreted through bile. Male Sprague Dawley derived rats were used in all experiments. PGV-0 was given intravenously using dose at 40 mg/kg BB. Then the faeces callected after 24 and 48 hours. The metabolite investigation devided into two parts, etil acetate fraction and water fraction, of faeces. The faeces which is excreted after 24 hours, found was more-polar metabolite according to PGV-0; it has shoft-yellow flourencese and having Rf value = 0,48 on TLC, using silica gel F254 as the stationary phase and etil acetate as the mobile phase. No PGV-0 glucuronide and sulfate metabolites were detectable in faeces, which are excreted on 24 or 48 hours.Key words : Pentagamavunon-0, biotransformation, intravenous, faeces
The effect of variation of dose, time toward cauli flower (Brassica oleracea var BotrytisL.) On hepatic cytochrome P-450 level rats given theophylline Sunarsih, Endang Sri; hakim, Lukman; ., Sugiyanto; ., Sumantri
INDONESIAN JOURNAL OF PHARMACY Vol 22 No 4, 2011
Publisher : Faculty of Pharmacy Universitas Gadjah Mada, Yogyakarta, Skip Utara, 55281, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (271.974 KB) | DOI: 10.14499/indonesianjpharm0iss0pp323-329

Abstract

Cytochrome  P-450  as  a  major  component  enzyme  system  in  drug metabolism. Activity  enzyme  of  cytochrome  P-450  was  influenced  by  internal and external factors. Vegetables of Brassicaceae such as cauli flower were often consumed  in  the  long  term,  its   has  inductor  activity  of  oxidation  enzyme systems and conjugation reactions. Theophylline as a bronchodilator drugs have the unknown effects on hepatic microsomal enzyme, such as cytochrome P-450 and   have  not  been  many  studies  that  tried  to  prove  it.  The  purpose  of  this study  was  to  prove  the  effects  of Cauliflower  and  indol  on  level  cytochrome  P-450  enzyme.  90  rats  were  divided  into  3  groups.  Group   I,  were  given Theophylline  20  mg/kg  BW.  In  group  II  30  rats  were  treated  with  indole  1,2; 2,4; 3,6 mg/kg BW, and group III 30 rats were treated with cauliflower extract respectively  doses  100,  200,  300  g/kg  BW.  Each  dose  was  given  on  10  rats, each group were divided 2 sub-groups were treated for 5, 10 days. On the last day  of  treatment  were  given  Theophylline  20  mg/kg  BW.   Cytochrome  P-450 enzyme  levels  were  determined  by  the  method  of  Omura  and  Sato(Snell,  and Mullock,1987). An induction cauliflower and indole did not increased levels of hepatic  cytochrome  P-450.  The  long  treatment  and  the   increased  of administered  dose  did  not  enhanced  the  levels  of  hepatic  cytochrome  P-450 enzyme. cauliflower and indole contained in vegetables when consumed together with theophylline drug, would not affect the metabolism of theophyllineKey words: Cauli flower, cytochrome P-450, theophylline, indole, spectrofotometric.