http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Miroslav M. Savić (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
Eldina Rizvić,Goran Janković,Miroslav M. Savić 대한약리학회 2017 The Korean Journal of Physiology & Pharmacology Vol.21 No.4
Vasoconstrictive properties of sympathomimetic drugs are the basis of their widespread use as decongestants and possible source of adverse responses. Insufficiently substantiated practice of combining decongestants in some marketed preparations, such are those containing phenylephrine and lerimazoline, may affect the overall contractile activity, and thus their therapeutic utility. This study aimed to examine the interaction between lerimazoline and phenylephrine in isolated rat aortic rings, and also to assess the substrate of the obtained lerimazoline-induced attenuation of phenylephrine contraction. Namely, while lower concentrations of lerimazoline (10–6 M and especially 10–7 M) expectedly tended to potentiate the phenylephrine-induced contractions, lerimazoline in higher concentrations (10–4 M and above) unexpectedly and profoundly depleted the phenylephrine concentration-response curve. Suppression of NO with NO synthase (NOS) inhibitor Nw-nitro-L-arginine methyl ester (L-NAME; 10–4 M) or NO scavanger OHB12 (10–3 M), as well as non-specific inhibition of K+-channels with tetraethylammonium (TEA; 10–3 M), have reversed lerimazoline-induced relaxation of phenylephrine contractions, while cyclooxygenase inhibitor indomethacin (10–5 M) did not affect the interaction between two vasoconstrictors. At the receptor level, non-selective 5-HT receptor antagonist methiothepin reversed the attenuating effect of lerimazoline on phenylephrine contraction when applied at 3×10–7 and 10–6 M, but not at the highest concentration (10–4 M). Neither the 5-HT1D-receptor selective antagonist BRL 15572 (10–6 M) nor 5-HT7 receptor selective antagonist SB 269970 (10–6 M) affected the lerimazoline-induced attenuation of phenylephrine activity. The mechanism of lerimazoline-induced suppression of phenylephrine contractions may involve potentiation of activity of NO and K+-channels and activation of some methiothepinsensitive receptors, possibly of the 5-HT2B subtype.
-
Eldina Rizvić,Goran Janković,Miroslav M. Savić 대한생리학회-대한약리학회 2017 The Korean Journal of Physiology & Pharmacology Vol.13 No.1
Vasoconstrictive properties of sympathomimetic drugs are the basis of their widespread use as decongestants and possible source of adverse responses. Insufficiently substantiated practice of combining decongestants in some marketed preparations, such are those containing phenylephrine and lerimazoline, may affect the overall contractile activity, and thus their therapeutic utility. This study aimed to examine the interaction between lerimazoline and phenylephrine in isolated rat aortic rings, and also to assess the substrate of the obtained lerimazoline-induced attenuation of phenylephrine contraction. Namely, while lower concentrations of lerimazoline (10<sup>–6</sup> M and especially 10<sup>–7</sup> M) expectedly tended to potentiate the phenylephrine-induced contractions, lerimazoline in higher concentrations (10<sup>–4</sup> M and above) unexpectedly and profoundly depleted the phenylephrine concentration-response curve. Suppression of NO with NO synthase (NOS) inhibitor N<sup>w</sup>-nitro-L-arginine methyl ester (L-NAME; 10<sup>–4</sup> M) or NO scavanger OHB<sub>12</sub> (10<sup>–3</sup> M), as well as non-specific inhibition of K<sup>+</sup>-channels with tetraethylammonium (TEA; 10<sup>–3</sup> M), have reversed lerimazoline-induced relaxation of phenylephrine contractions, while cyclooxygenase inhibitor indomethacin (10<sup>–5</sup> M) did not affect the interaction between two vasoconstrictors. At the receptor level, non-selective 5-HT receptor antagonist methiothepin reversed the attenuating effect of lerimazoline on phenylephrine contraction when applied at 3×10<sup>–7</sup> and 10<sup>–6</sup> M, but not at the highest concentration (10<sup>–4</sup> M). Neither the 5-HT<sub>1</sub><sub>D</sub>-receptor selective antagonist BRL 15572 (10<sup>–6</sup> M) nor 5-HT<sub>7</sub> receptor selective antagonist SB 269970 (10<sup>–6</sup> M) affected the lerimazoline-induced attenuation of phenylephrine activity. The mechanism of lerimazoline-induced suppression of phenylephrine contractions may involve potentiation of activity of NO and K<sup>+</sup>-channels and activation of some methiothepin sensitive receptors, possibly of the 5-HT<sub>2B</sub> subtype.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
