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2017 ; 25
(4
): 564-569
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The effects of low-molecular-weight heparin on lung and pulmonary artery injuries
in acute pulmonary embolism rat model via platelet-derived growth factor-?
#MMPMID28579892
Zhou B
; Sun G
; Mei F
; Xu H
Saudi Pharm J
2017[May]; 25
(4
): 564-569
PMID28579892
show ga
OBJECTIVE: To evaluate the effects of anticoagulant agent (low-molecular-weight
heparin, LMWH) on the pulmonary artery intima hyperplasia of rats with acute
pulmonary embolism (APE) by assaying platelet-derived growth factor-? (PDGF-?).
METHODS: A total of 90 Sprague-Dawley rats were randomly assigned into the sham,
APE, and LMWH groups with 30 rats in each group. The APE rat models were
established by injecting autologous blood clots via external jugular veins. In
each group, six mice were sacrificed at the 1st day (D1), 4th day (D4), 7th day
(D7), 14th day (D14), and 28th (D28) subsequent to the induction of APE to
collect the lungs. Right ventricle pressure (RVP) and mean pulmonary arterial
pressure (mPAP) were measured. Western blot and RT-PCR analyses were used to
assess PDGF-? expression at various time points. In addition, changes in lung
pathology were evaluated using hematoxylin and eosin (H&E) staining and electron
microscope. RESULTS: The overall success rate of establishing APE rat models was
85.7% (60/70). There was no difference in mPAP between the sham group and the APE
group at the D1, D4, D7, and D14. However, at the D28, mPAP in the APE group was
significantly higher than that in the sham group. There was no difference among
the three groups regarding RVP. PDGF-? expression were decreased in the LMWH
group at all time points compared with the sham and APE groups (P < 0.01).
Furthermore, pulmonary embolism, alveolar wall necrosis and hemorrhage, and
inflammation were significantly attenuated in the LMWH group compared with the
sham and APE groups subsequent to the induction of APE. CONCLUSION: LMWH
attenuates lung and pulmonary artery injuries and improves prognosis. Decreased
PDGF-? in the lungs may be the important factor in the effects observed.