Pharmacodynamic study of polymerized porcine hemoglobin (pPolyHb) in a rat model of exchange transfusion.

نویسندگان

  • Hongli Zhu
  • Xiaodong Dang
  • Kunping Yan
  • Penggao Dai
  • Chao Luo
  • Jun Ma
  • Yan Li
  • Thomas Ming Swi Chang
  • Chao Chen
چکیده

The objective of the present study is to evaluate the pharmacodynamic properties of polymerized porcine hemoglobin (pPolyHb) in an exchange transfusion model. Each of two groups of rats received a volume of pPolyHb or hetastarch that equalled 120-140% of estimated total blood volume (70 ml/kg) exchange transfusion. The results showed pPolyHb retained hemodynamic stability and exhibited superior volume expansion capability. Furthermore, pPolyHb effectively reverse anaerobic metabolism caused by a large amount of volume exchange. In comparison with hetastarch, pPolyHb increased blood oxygen content and tissue oxygenation. All these properties contribute to a higher effectiveness in sustaining the lives of rats in pPolyHb group.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Immune safety evaluation of polymerized porcine hemoglobin (pPolyHb): a potential red blood cell substitute.

Polymerized Porcine Hemoglobin (pPolyHb), a hemoglobin-based oxygen carrier (HBOC), was developed as a potential red blood substitute for clinical applications. Assessment of its effects on the immune system is an important component of the overall safety evaluation of HBOC. For this purpose, we assessed three inflammation indicators, including complement C3a, IL-6, and TNF-? in cultured cells ...

متن کامل

Effects of ultra-purified polymerized bovine hemoglobin on local tissue oxygen tension in striated skin muscle -- an efficacy study in the hamster.

The development of hemoglobin-based oxygen carriers has been propagated for replacement of the oxygen carrying properties of red blood cells for almost one century. Using a Clark-type multi-wire oxygen surface electrode and the dorsal skin fold chamber model of the awake Syrian golden hamster, local tissue pO(2) was analyzed in the thin striated skin muscle before and after administration of an...

متن کامل

Increased tissue PO2 and decreased O2 delivery and consumption after 80% exchange transfusion with polymerized hemoglobin.

The O2-carrying blood substitute based on polymerized bovine hemoglobin (PBH) was used to determine efficacy in maintaining tissue Po2 after an 80% isovolemic blood exchange leading to a hematocrit of 19% [5.4 g Hb/dl from red blood cells (RBCs) and 6.3 g Hb/dl from PBH]. Effects were studied in terms of O2 delivery, O2 extraction, and tissue Po2 at the microcirculatory level at 1, 12, and 24 h...

متن کامل

Hyperbilirubinemia Following Exchange Transfusion with G-6-PD Deficient Donor Blood

Background: The incidence of glucose-6-phosphate dehydrogenase (G-6-PD) deficiency in Iran is estimated at 10-14.9%.  The donor blood in blood banks is not screened routinely for this enzyme deficiency and such blood may be used for neonatal exchange transfusion.Objective: To study the effect of G-6-PD deficient blood in neonatal exchange blood transfusion.Methods: In a prospective study, serum...

متن کامل

Transcriptional Suppression of Renal Antioxidant Enzyme Systems in Guinea Pigs Exposed to Polymerized Cell-Free Hemoglobin

Hemoglobin-based oxygen carriers (HBOCs) are being developed as oxygen and plasma volume-expanding therapeutics though their potential to promote oxidative tissue injury has raised safety concerns. Using a guinea pig exchange transfusion model, we examined the effects of polymerized bovine hemoglobin (HbG) on the transcriptional regulation, activity, and expression of the renal antioxidant enzy...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Artificial cells, blood substitutes, and immobilization biotechnology

دوره 39 3  شماره 

صفحات  -

تاریخ انتشار 2011