Navigation Links
An emerging candidate for protecting patients from liver injury after abdomen surgery
Date:1/16/2008

Many patients worldwide are going to receive major abdomen surgery or intestine transplantation every year and expect to be afflicted with liver injury afterwards. The finding of a research group headed by Professor Han Jing-Yan in China and reported in January 7, 2008 of the World Journal of Gastroenterology (volume 14, issue 1) may prove good news for them.

The study by Han Jing-Yan et al discovered Ginsenosaide Rb1 (R1) is able to prevent hepatic microcirculatory disturbance and subsequent liver injury in mice induced by intestine ischemia and reperfusion (I/R). R1 is one of the major effective ingredients of Panax notoginseng (PN), a traditional Chinese herb medicine frequently included in various compound Chinese medicines for treatment of liver injury and numerous other diseases in China and other Asian countries.

In 2005, Dr. Han was working on the effect and underlying mechanism of cardiotonic pills (CP) in cooperation with Prof. Toshifumi Hibi and Dr Yoshinori Horie in the Department of Internal Medicine, School of Medicine, Keio University, Japan. They revealed the beneficial effect of CP for improving gut I/R induced liver injury (Horie Y, Han JY, Mori S, Konishi M, Kajihara M, Kaneko T, Yamagishi Y, Kato S, Ishii H, Toshifumi Hibi. Herbal cardiotonic pills prevent gut ischemia/reperfusion-induced hepatic microvascular dysfunction in rats fed ethanol chronically. World J Gastroenterol 2005; 11(4): 511-515). However, CP is a compound Chinese medicine preparation that contains PN, and salvia miltiorrhiza and Borneol additionally. It was not clear at that time which one among the three ingredients is actually responsible for this action. The present report of Dr. Hans group shows R1, one of the major compounds of PN, protects against the gut I/R induced liver injury impressively.

In this study, the animal model is established by ligation of the superior mesenteric artery (SMA) in C57/BL mice for 15 min followed by 30 min reperfusion. The researchers apply several techniques to address the issue concerned. First, they take advantage of an inverted intravital microscope assisted by a 3CCD color camera and high speed video camera and laser confocal microscope. This enables a dynamic examination of the hepatic microcirculatory parameters under investigation in mouse subjected to gut I/R and observes the gut I/R imposed impairment in vascular diameter, red blood cell velocity, sinusoid perfusion and leukocyte rolling and adhesion is obviously alleviated or completely abolished by pretreatment with R1.

Secondly, immunofluorescent staining is used to examine the endothelial adhesion molecules E-selectin and ICAM-1. Finally, blood is collected for detecting the expression of adhesion molecules in leukocyte and the activity of hepatic enzymes, including LDH, ALT, and AST, and the concentration of pro-inflammatory mediators such as TNF-, IL-6 and monocyte chemotactic protein-1 (MCP-1). After careful evaluation, the researchers concluded R1 prevents I/R-induced hepatic microcirculation disturbance and hepatocyte injury by inhibition of leukocyte rolling and adhesion, through depressing the expression of E-selectin in endothelium and CD18 in neutrophils. This result is of significance not only for better understanding the mechanism of the effect of PN and PN containing preparations, but also for R1 to be used to prevent liver injury originated from gut I/R.


'/>"/>

Contact: Jing Zhu
wjg@wjgnet.com
0086-105-908-0039
World Journal of Gastroenterology
Source:Eurekalert

Related medicine news :

1. Computers help chemists fight emerging infections
2. Expert on Emerging Infectious Zoonotic Diseases Joining K-State as a Regents Distinguished Professor
3. iCAD to Present at Americas Growth Capital 4th Annual Emerging Growth Conference
4. GlycoMark Blood Test Included in Global Diabetes Care Guidelines as Emerging Technology
5. Plastic Surgery 2007: Where Truth Behind Emerging Cosmetic Treatments Meets Amazing Reconstructive Advances
6. HealthShares(TM) Announces Change to the HealthShares(TM) Emerging Cancer Index
7. Targets on the horizon: Emerging therapies and novel targets
8. Emerging therapies with a focus on Asian populations mark the AACR Centennial Conference
9. Food and Drug Law Institute, Project on Emerging Nanotechnologies Co-Sponsor Major Conference on Nanotechnology Law, Regulation and Policy
10. OneMedPlace Emerging Healthcare Technologies Finance Forum Jan 7, 8th
11. QED International Associates Announces Changes to the HealthShares(TM) Emerging Cancer Index
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/23/2017)... ... February 23, 2017 , ... The Lymphoma Research ... lymphoma research and serving the lymphoma community through a comprehensive series of education ... Country Club in Miami Beach to host its Swirl: Miami Wine Tasting Event ...
(Date:2/23/2017)... NC (PRWEB) , ... February 23, 2017 , ... The ... Sponsor for ACPA’s 74th Annual Meeting. KLS is a longtime supporter of the ... as an exhibitor and Platinum Sponsor," said Dr. Bob Havlik, 2017 ACPA President. "KLS ...
(Date:2/23/2017)... ... February 23, 2017 , ... Hamlin Dental Group and Dr. Hamid Reza, ... raffle. Throughout the month of February, patients who visit Hamlin Dental Group will receive ... dinner for two at the Cheesecake Factory. , Tickets are available for routine ...
(Date:2/23/2017)... ... 23, 2017 , ... EBSCO Information Services (EBSCO) ... for Health and Care Excellence (NICE) framework. The agreement allows purchasers from ... to search, order and purchase medical and healthcare-related content through GOBI ®, ...
(Date:2/23/2017)... ... 23, 2017 , ... Dr. David Mahon leads Siena Dental, a comprehensive dental ... named a 2017 Top Patient Rated Henderson Dentist by Find Local Doctors ... local physicians and dentists who have earned high ratings and superior patient reviews from ...
Breaking Medicine News(10 mins):
(Date:2/24/2017)... Feb. 24, 2017 Juan Monteverde , ... PC , a boutique securities firm headquartered at the ... , announces that a class action lawsuit has ...  against Inotek Pharmaceuticals Corporation (NASDAQ:  ITEK)("Inotek" or ... securities between July 23, 2015 and December 30, 2016, inclusive ...
(Date:2/24/2017)... MELBOURNE , Australien, 24. Februar 2017 /PRNewswire/ ... innovatives, diversifiziertes Unternehmen des Gesundheitsbereiches, ist erfreut, für ... Vergleich mit dem entsprechenden Vorjahreszeitraum exzellente Ergebnisse vorlegen ... BioMedical und Aktualisierung zum Wachstum" finden Sie ... Gewinn nach Steuern 2,12 Millionen USD (Dez. 2015: ...
(Date:2/24/2017)... Feb. 23, 2017  This report analyzes the worldwide ... following Products: Intermediates, Analytical, and Others. ... include Pharmaceuticals, and Agrochemicals. The report provides separate comprehensive ... Europe , and Rest of World. ... 2015 through 2022. Also, a six-year historic analysis is ...
Breaking Medicine Technology: