ZAMANI Z, ZOLFAGHARIAN H, TOWFIGHI H, KHATAMI S, ANSARI A. CHARACTERIZATION OF AN ANTICOAGULANT AGENT IN THE VENOM OF IRANIAN COBRA (NAJA NAJA OXIANA).. Med J Islam Repub Iran 2000; 13 (4) :291-295
URL:
http://mjiri.iums.ac.ir/article-1-925-en.html
From the Biochemistry Dept., Pasteur Institute of Iran, Tehran, and the Poisonous Animals Dept., Razi Institute of Serology, Hesarak, Karaj, I.R. Iran
Abstract: (4417 Views)
Snake venoms contain a rich variety of factors which affect blood coagulation.
There have been few reports on the anticoagulant activity of the venom of different
cobras, but no such observations have been made on the Iranian cobra, although a
procoagulant factor has been described.
In this study an anticoagulant factor has been purified from the venom of Naja
naja oxiana using gel filtration followed by isopycnic ultracentrifugation with
30% KBr. The factor was a glycoprotein with a molecular weight of 45.36 kDa and
increased plasma recalcification time by 224 sec which was 7.7 times greater than
the activity of crude venom.