Effects of the Human Pulmonary Surfactant Protein-C (SP-C), SP-CL16(6-28) on Surface Activities of Surfactants with Various Phospholipids(Pharmacology)
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概要
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We previously reported that a human analogue of pulmonary surfactant protein-C (SP-C), SP-CL16(6-28), with 23 residues was the most active analogue in a reconstituted lipid mixture and had the shortest chain among the poly-leucine-analogues examined. There has been little research on the chemical components of synthetic lung surfactants (SLSs). In the present study, we attempted to compare SLS with various phospholipids in surface activity. That is, SP-CL16(6-28) plus various phosphatidylglycerols (PG) were tested for surface activity in a Langmuir-Wilhelmy surface balance (WSB) apparatus and pulsating bubble surfactmeter (PBS). Further, SLSs were examined for biological properties using an animal model of surfactant deficiency, infant respiratory distress syndrome (IRDS), in vivo. Palmitoyl-oleoyl-phosphatidylglycerol (POPG)-SLS exhibited minimum and maximum surface tensions of 1.7 mN/in and 28.6 mN/in in WSB and 8.5 mN/in and 36.2 mN/in in PBS, respectively. Moreover, in the IRDS model, POPG-SLS remarkably improved the lung volume (LV) of a premature lagomorph fetus at LV30 cmH_2O and LV5 cmH_2O. That is, a significant improvement equal to the LV of a fullterm fetus was observed. The level of LV exhibited respiratory improvement equivalent to surfactant-TA. SLS seemed comparable in surface activity with Surfacten○!R (Surfactant-TA), a modified surfactant preparation which has been used for the treatment of RDS.
- 公益社団法人日本薬学会の論文
- 2002-10-01
著者
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OTSUBO Eiji
Research Center, Mitsubishi Pharma Corporation
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TAKEI Tsunetomo
Research Center, Mitsubishi Pharma Corporation
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Otsubo Eiji
Research Center Mitsubishi Pharma Inc.
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Takei Tsunetomo
Research Center Mitsubishi Pharma Inc.
関連論文
- Characterization of Synthetic Lung Surfactant Activity against Proinflammatory Cytokines in Human Monocytes
- Synthesis, Purification and Surface Activities of the Human Pulmonary Surfactant Protein-C(SP-C)Analogue, SP-CL16(6-28)
- Effects of the Human Pulmonary Surfactant Protein-C (SP-C), SP-CL16(6-28) on Surface Activities of Surfactants with Various Phospholipids(Pharmacology)
- Characterization of Poly-Leucine Substituted Analogues of the Human Surfactant Protein SP-C
- The Surface Properties of Chemically Synthesized Peptides Analogous to Human Pulmonary Surfactant Protein SP-C
- Characterization of the Surface Activity of a Synthetic Surfactant with Albumin