Abstract：
:Rat hearts were perfused at 37 degrees C with three clearly-defined protocols: the Ca2+ paradox, the O2 paradox and with 20 mM caffeine. Each protocol involved an initial priming (stage 1) and a subsequent full activation (stage 2) of the damage system of the sarcolemma. Raising [K+]o from 5.4 to 6.5 mM in the Ca2+ paradox had no significant effect, but creatine kinase release was significantly inhibited (P < 0.001) at 7.5, 10.8 or 16.2 mM. Raising [K+]o to 16.2 mM only during stage 1 or only during stage 2 also inhibited creatine kinase release (P < 0.001); protection was greater than when 16.2 mM [K+]o was present throughout. [K+]o at 10.8 mM exacerbated creatine kinase release in the O2 paradox (P < 0.001) and also when present only during stage 1. However, significant protection was provided when [K+]o was raised only during stage 2 (P < 0.001). Creatine kinase release in the caffeine protocol was significantly inhibited (P < 0.001) at 10.8 mM [K+]o and when [K+]o was raised only during stage 1 or stage 2. It is concluded that raised [K+]o has two opposing effects: prevention of the activation of the membrane damage system and an exacerbation of damage via an increased Ca2+ influx.
journal_name
Eur J Pharmacoljournal_title
European journal of pharmacologyauthors
Harding RJ,Duncan CJdoi
10.1016/s0014-2999(96)00676-0subject
Has Abstractpub_date
1996-12-05 00:00:00pages
223-8issue
2-3eissn
0014-2999issn
1879-0712pii
S0014-2999(96)00676-0journal_volume
316pub_type
杂志文章abstract：:Allosterism between gamma-aminobutyric acid (GABA), benzodiazepine and picrotoxinin recognition sites on the GABAA receptor was studied in primary cultures of cerebellar granule cells. The increase in [3H]flunitrazepam binding induced by GABA was inhibited by bicuculline and picrotoxinin and the decrease in [35S]t-but...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(96)00866-7
更新日期：1997-01-29 00:00:00
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2008.02.031
更新日期：2008-06-10 00:00:00
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(89)90512-8
更新日期：1989-12-07 00:00:00
abstract：:We previously reported that circulating lipid (malondialdehyde, MDA) and protein oxidation (carbonyl residues, CO) products can be used as markers of risk for complications in poorly controlled type 2 diabetics. Now, we aimed to evaluate the existence of a gender effect on classical disease markers and oxidative stres...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2015.09.041
更新日期：2015-11-05 00:00:00
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journal_title：European journal of pharmacology
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doi：10.1016/j.ejphar.2017.06.029
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2004.07.112
更新日期：2004-09-24 00:00:00
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(80)90027-8
更新日期：1980-10-03 00:00:00
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(86)90745-4
更新日期：1986-07-15 00:00:00
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(90)90370-l
更新日期：1990-10-23 00:00:00
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journal_title：European journal of pharmacology
pub_type： 杂志文章
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(90)94196-5
更新日期：1990-11-13 00:00:00
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(97)01192-8
更新日期：1997-09-10 00:00:00
abstract：:Apoptosis has received widespread attention for its essential roles in biology, medicine and cancer. We previously found that normal, human papillomavirus (HPV) 16-immortalized and their transformed endocervical cells were increasingly resistant to apoptosis induced by a cancer therapeutic drug. Here, analogously, ano...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(03)01561-9
更新日期：2003-04-25 00:00:00
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(87)90223-8
更新日期：1987-06-04 00:00:00
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(02)01344-4
更新日期：2002-04-26 00:00:00
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(96)00933-8
更新日期：1997-01-14 00:00:00
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journal_title：European journal of pharmacology
pub_type： 杂志文章
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更新日期：1977-07-15 00:00:00
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journal_title：European journal of pharmacology
pub_type： 杂志文章
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journal_title：European journal of pharmacology
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journal_title：European journal of pharmacology
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更新日期：2002-08-23 00:00:00
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journal_title：European journal of pharmacology
pub_type： 杂志文章
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更新日期：1978-10-01 00:00:00
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journal_title：European journal of pharmacology
pub_type： 杂志文章
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abstract：:There is evidence for the existence of functional interactions between nicotine and cannabinoids and opioid compounds in adult experimental animals. However, there is scarce information about these relationships in young animals. In the present study we evaluated short and long-term effects of a subchronic nicotine tr...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2006.11.013
更新日期：2007-02-14 00:00:00
abstract：:This study evaluated the contribution of supraspinal opioid receptors to the production of antinociception, in the rat. I.c.v. administration of a selective mu- (DAMGO) and a selective delta- (DPDPE), but not a selective kappa- (U50,488H) opioid receptor agonist, produced significant dose-dependent increase in mechani...
journal_title：European journal of pharmacology
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(86)90547-9
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(84)90032-3
更新日期：1984-05-18 00:00:00
abstract：:We reported previously that 18 compounds varying in general anesthetic potency by up to 66 000-fold inhibited, at anesthetic concentrations, the metabolism of arachidonic acid and aminopyrine by cytochrome P450 monooxygenases in rat liver microsomes. Now, we report that P450-mediated para-hydroxylation of aniline is m...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0926-6917(95)00022-4
更新日期：1995-10-06 00:00:00
abstract：:Rosmarinic acid (RA) is a polyphenolic compound with various pharmacological properties, including, anti-inflammatory, immunomodulatory, and neuroprotective, as well as having antioxidant and anticancer activities. This study evaluated the effects and mechanisms of RA in two racially different triple-negative breast c...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2020.173419
更新日期：2020-10-15 00:00:00
abstract：:Nerve growth factor (NGF) is known to regulate the development and survival of select populations of neurons via its binding/activation of the TrkA and p75(NTR) receptors. However, in some physiological circumstances NGF dysregulation can result in debilitating pathologies, including diabetic neuropathies, interstitia...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2013.03.029
更新日期：2013-05-15 00:00:00
