Extracorporeal shock wave therapy and Lymphedema

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Extracorporeal shock wave therapy and Lymphedema

Postby patoco » Sat Dec 15, 2012 1:48 pm

Extracorporeal shock wave therapy and Lymphedema.

Information Resources

Extracorporeal Shock Wave Therapy Combined with Vascular Endothelial Growth Factor-C Hydrogel for Lymphangiogenesis.

Nov 2012

Kim IG, Lee JY, Lee DS, Kwon JY, Hwang JH.

Source

Department of Urology, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea.

Abstract

Key Words: Extracorporeal shock wave therapy, VEGF-C, Hydrogel, Lymphedema, Lymphangiogenesis

Background/Aims: Lymphedema is a clinically incurable disease that occurs commonly after lymph node dissection and/or irradiation. Several studies have recently demonstrated that extracorporeal shock wave therapy (ESWT) could promote lymphangiogenesis associated with expression of vascular endothelial growth factor (VEGF)-C. This research concerned primarily the synergistic effect of ESWT combined with VEGF-C incorporated hydrogel (VEGF-C hydrogel) combination therapy for promoting lymphangiogenesis and ultimately alleviating lymphedema. Methods: The VEGF-C hydrogel was applied to the injury site in a mouse model of lymphedema and then regularly underwent ESWT (0.05 mJ/mm(2), 500 shots) every 3 days for 4 weeks. Results: Four weeks after the treatment, mice treated with VEGF-C hydrogel and ESWT showed signs of the greatest decrease in edema/collagenous deposits when compared with the other experimental group. LYVE-1-positive vessels also revealed that the VEGF-C/ESWT group had significantly induced the growth of new lymphatic vessels compared to the other groups. Western blot analysis showed that expression of VEGF-C (1.24-fold) and VEGF receptor-3 (1.41-fold) was significantly increased in the VEGF-C/ESWT group compared to the normal group. Conclusion: These results suggested that VEGF-C and ESWT had a synergistic effect and were very effective in alleviating the symptoms of lymphedema and promoting lymphangiogenesis.

[url]=http://content.karger.com/produktedb/produkte.asp?DOI=10.1159/000343699]Vascular Research[/url]

Extracorporeal shock wave therapy induces therapeutic lymphangiogenesis in a rat model of secondary lymphedema.

Aug 2011

Serizawa F, Ito K, Matsubara M, Sato A, Shimokawa H, Satomi S.

Source

Division of Advanced Surgical Science and Technology, Tohoku University Graduate School of Medicine, 1-1 Seiryomachi, Aoba-ku, Sendai 980-8574, Japan.

Abstract

Keywords: Shock wave therapy, Lymphangiogenesis, Lymphoedema

OBJECTIVE:
Lymphoedema is a common complication after cancer treatment. We have reported that low-energy extracorporeal shock wave (SW) therapy up-regulates vascular endothelial growth factor (VEGF) in ischaemic myocardium. As VEGF plays an important role in lymphangiogenesis, we investigated whether our low-energy SW therapy enhances lymphangiogenesis in rats.

METHODS:
We created a tail model of lymphoedema in rats. The tail was treated with or without low-energy SW therapy (0.25 mJ mm(-2), 500 impulses) four times (days 3, 5, 7, and 9). The tail volume and the fluorescence intensity of indocyanine green (ICG) were measured. The expression of VEGF-C and basic fibroblast growth factor (bFGF) were evaluated by RT-PCR, and the lymphatic vessel density was assessed histochemically.

RESULTS:
The tail volume increased significantly in the control group and was significantly improved in the SW group. The lymphatic system function (evaluated with fluorescence intensity of ICG), the lymphatic vessel density, and the expression of VEGF-C and bFGF were all enhanced by the SW therapy (all P < 0.05).

CONCLUSIONS:
The low-energy SW therapy induces therapeutic lymphangiogenesis by up-regulating VEGF-C and bFGF, and improves lymphoedema in a rat-tail model, suggesting that low-energy SW therapy could be a non-invasive and effective strategy for lymphoedema in humans.

Journal of Vascular & Endovascular Surgery

Extracorporeal shock wave therapy ameliorates secondary lymphedema by promoting lymphangiogenesis.

Aug 2010

Kubo M, Li TS, Kamota T, Ohshima M, Shirasawa B, Hamano K.

Source

Department of Surgery and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan.

Abstract

OBJECTIVE:
Although secondary lymphedema is a common complication after surgical and radiation therapy for cancer, the treatment options for lymphedema remain limited and largely ineffective. We thus studied the effect of extracorporeal shock wave therapy on promoting lymphangiogenesis and improving secondary lymphedema.

METHODS:
A rabbit ear model of lymphedema was created by disruption of lymphatic vessels. Two weeks after surgery, the lymphedematous ear was treated with or without low-energy shock waves (0.09 mJ/mm(2), 200 shots), three times per week for 4 weeks.

RESULTS:
Western blot analysis showed that the expression of vascular endothelial growth factor (VEGF)-C (1.23-fold, P < .05) and VEGF receptor 3 (VEGFR3; 1.53-fold, P < .05) was significantly increased in the ears treated with shock wave than in the untreated lymphedematous ears. Compared with the control group, shock wave treatment led to a significant decrease in the thickness of lymphedematous ears (3.80 +/- 0.25 mm vs 4.54 +/- 0.18 mm, P < .05). Immunohistochemistry for VEGFR3 showed the density of lymphatic vessels was significantly increased by shock wave treatment (P < .05).

CONCLUSION:
Extracorporeal shock wave therapy promotes lymphangiogenesis and ameliorates secondary lymphedema, suggesting that extracorporeal shock wave therapy may be a novel, feasible, effective, and noninvasive treatment for lymphedema.

Journal of Vascular Surgery
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