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EFFECTS OF DOSE, PH AND OSMOLARITY ON INTRANASAL ABSORPTION OF RECOMBINANT-HUMAN-ERYTHROPOIETIN IN RATS
被引:0
作者:
SHIMODA, N
[1
]
MAITANI, Y
[1
]
MACHIDA, Y
[1
]
NAGAI, T
[1
]
机构:
[1] CHUGAI PHARMACEUT CO LTD, DEPT BUSINESS COORDINAT, DIV DEV & TECHNOL, KITA KU, TOKYO 115, JAPAN
关键词:
ERYTHROPOIETIN;
INTRANASAL ADMINISTRATION;
GLYCOPROTEIN CIRCULATING RETICULOCYTE;
BIOAVAILABILITY;
D O I:
暂无
中图分类号:
R9 [药学];
学科分类号:
1007 ;
摘要:
The effects of dose, pH and osmolarity on the intranasal absorption of a recombinant human erythropoietin (rEPO) solution were studied in male Wistar rats, The intranasal administration of rEPO was evaluated by measuring percentage circulating reticulocytes of red blood cells on a stained blood smear (smear method), and also by measuring residual circulating reticulocyte counts using a microcell counter (sysmex method), Both results suggest that rEPO solution was absorbed through the nasal mucosa of rats without enhancers after a single intranasal administration, The pharmacological availabilities of rEPO after intranasal administration compared with intravenous administration were about 7% and 4%, when estimated by smear method and sysmex method, respectively, The pharmacological activity was enhanced in low pH and hypotonic mannitol solution.
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页码:734 / 739
页数:6
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