Role of α2Plasmin Inhibitor in Fibrinolytic Therapy by Urokinase and the Optimal Urokinase Dosage

1979 ◽  
Author(s):  
S. Hayashi ◽  
K. Yamada

A novel plasmin inhibitor, namely α2plasmin inhibitor (α2PI), was found to be more efficient than other plasmin inhibitors but its clinical role in fibrinolytic therapy by urokinase (UK) was not examined. We injected UK into 9 patients with thrombotic diseases at several different doses (2-180×l04 IU/day) in order to estimate the optimal dosage inducing fibrinolysis, ahd to evaluate the role of α2PI in fibrinolysis during UK administration. The correlation coefficients(CE) between UK/day and α2PI, plasminogen (PIg), ulantitrypsin (UIAT) and α2macroglobulin(α2MC) were-0.75, -0.54, 0.39 and -0.37, respectively. Above50×104 of UK/day, the α2PI level fell below 60%, and above 150×10 4 IU of UK/day it fell below 30%. The CE between lysis area on fibrin plate (FPL) and α2PI, α2AT, α2MC, UK/day and PIg were -0.69, 0.51, -0.31, 0.30 and -0.26, respectively. When the level of α2PI fell below 60%, EPL was observed in 13 of 20 samples (65%) , whereas above 60% of α2PI it was observed in only 4 of 35 samples (11%). The above results suggest that α2PI is most important in regUlating fibrinolysis during UK administration and about 50xl0 4IU/day of UK should be infused in order to lower the level of α2PI to below 60%, so inducing prominent fibrinolysis.

1996 ◽  
Vol 51 (3) ◽  
pp. 216-218 ◽  
Author(s):  
Rachel G. Klein
Keyword(s):  

1969 ◽  
Vol 21 (02) ◽  
pp. 294-303 ◽  
Author(s):  
H Mihara ◽  
T Fujii ◽  
S Okamoto

SummaryBlood was injected into the brains of dogs to produce artificial haematomas, and paraffin injected to produce intracerebral paraffin masses. Cerebrospinal fluid (CSF) and peripheral blood samples were withdrawn at regular intervals and their fibrinolytic activities estimated by the fibrin plate method. Trans-form aminomethylcyclohexane-carboxylic acid (t-AMCHA) was administered to some individuals. Genera] relationships were found between changes in CSF fibrinolytic activity, area of tissue damage and survival time. t-AMCHA was clearly beneficial to those animals given a programme of administration. Tissue activator was extracted from the brain tissue after death or sacrifice for haematoma examination. The possible role of tissue activator in relation to haematoma development, and clinical implications of the results, are discussed.


2012 ◽  
Vol 2 (2) ◽  
pp. 345-350
Author(s):  
Dr. Girish.L Dandagi ◽  
◽  
Venkat kalyana kumar. P ◽  
Dr. Dr.Isaac Mathew ◽  
Dr. Dr.G S Gaude Dr. Dr.G S Gaude

2020 ◽  
Vol 44 (1) ◽  
Author(s):  
Marian Nabil ◽  
Entesar E. Hassan ◽  
Neven S. Ghaly ◽  
Fawzia A. Aly ◽  
Farouk R. Melek ◽  
...  

Abstract Background The genus Albizia (Leguminoseae) is used in folk medicine for the treatment of a wide range of ailments. Recently, saponins from plant origin have attracted much attention. Saponins are recorded to have a broad range of biological and pharmacological activities. This study was performed to evaluate the protective role of Albizia chinensis bark methanolic extract (MEAC) against the genotoxicity induced by cyclophosphamide (CP) using different mutagenic parameters. Results The results showed that MEAC induced an inhibitory effect against chromosomal aberrations of CP in mouse bone marrow and spermatocytes. Such effect was found to be significant (p < 0.01) with a dose of 100 mg/kg treated once for 24 h and also after repeated treatment at a dose of 25 mg/kg for 7 days. In sperm abnormalities, the protective effect of Albizia extract showed a dose-related relationship. Different doses of MEAC (25, 50, and 100 mg/kg) significantly (p < 0.01) ameliorated sperm abnormalities induced by CP dose-dependently. The percentage of sperm abnormalities was decreased to 5.14 ± 0.72 in the group of animals treated with CP plus MEAC (100 mg/kg) indicating an inhibitory effect of about 50%. Conclusion MEAC at the doses examined was non-genotoxic compared to control (negative) and exhibited a protective role against CP genotoxicity.


2021 ◽  
Vol 14 (6) ◽  
pp. 593
Author(s):  
Sandra Fernández-Rodríguez ◽  
Claudia Esposito-Zapero ◽  
Teodoro Zornoza ◽  
Ana Polache ◽  
Luis Granero ◽  
...  

N-acetylcysteine (NAC) is a prodrug that is marketed as a mucolytic agent and used for the treatment of acetaminophen overdose. Over the last few decades, evidence has been gathered that suggests the potential use of NAC as a new pharmacotherapy for alcohol use disorder (AUD), although its mechanism of action is already being debated. In this paper, we set out to assess both the potential involvement of the glutamate metabotropic receptors (mGluR) in the possible dual effect of NAC administered at two different doses and NAC’s effect on ethanol-induced activation. To this aim, 30 or 120 mg/kg of NAC was intraperitoneally administered to rats with the presence or absence of the negative allosteric modulator of mGluR5 (MTEP 0.1 mg/kg). Thereafter, the cFOS IR-cell expression was analyzed. Secondly, we explored the effect of 120 mg/kg of NAC on the neurochemical and behavioral activation induced by intra-VTA ethanol administration (150 nmol). Our results showed that the high NAC dose stimulated cFOS expression in the NAcc, and that this effect was suppressed in the presence of MTEP, thus suggesting the implication of mGluR5. Additionally, high doses could attenuate the ethanol-induced increase in cFOS-expression in the NAcc, probably due to a phenomenon based on the long-term depression of the MSNs. Additional experiments are required to corroborate our hypothesis.


2021 ◽  
pp. 001857872110323
Author(s):  
Jessica Mazzone ◽  
Krysta Shannon ◽  
Richard Rovelli ◽  
Racha Kabbani ◽  
Angel Amaral ◽  
...  

The second wave of COVID-19 emerged in the late fall months in the state of Massachusetts and inadvertently caused a rise in the number of cases requiring hospitalization. With a field hospital previously opened in central Massachusetts during the Spring of 2020, the governor decided to reimplement the field hospital. Although operations were effectively accomplished during the first wave, the reimplementation of the field hospital came with its new set of challenges for operating a satellite pharmacy. Experiences gathered include new pharmacy operation workflows, the clinical role of pharmacy services, introduction of remdesivir treatment, and pharmacy involvement in newly diagnosed diabetes patients requiring insulin teaching. Pharmacy services were successful in adapting to the rapidly growing number in patients with a total of over 600 patients served in a course of 2 months.


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