Inhibitory effect of D3 dopamine receptors on neuropeptide Y‑induced migration in vascular smooth muscle cells.

Abnormal migration of vascular smooth muscle cells (VSMCs) serves an important role in hypertension, atherosclerosis and restenosis following angioplasty, which is regulated numerous hormonal and humoral factors, including neuropeptide Y (NPY) and dopamine. Dopamine and NPY are both sympathetic neurotransmitters, and a previous study reported that NPY increased VSMC proliferation, while dopamine receptor inhibited it. Therefore, the authors wondered whether or not there is an inhibitory effect of dopamine receptor on NPY‑mediated VSMC migration.

[Clinical study of laparoscopic rectal surgery without abdominal scar].

Objective: To assess the feasibility and safety of laparoscopic rectal surgery without abdominal scar.

Methods: A total of 23 patients of rectal cancer were operated by laparoscopy with the assistance of PPH (procedure for prolapse and hemorrhoids) anal expander and TEM (transanal endoscopic microsurgery) outer-shell according to the principle of TME (total mesorectal excision).

Results: All operations were successfully accomplished laparoscopically.

[Clinical application of mastoscopic axillary sentinel lymph node biopsy].

Objective: To evaluate the technique and significance of mastoscopic axillary sentinel lymph node biopsy.

Methods: Sixty-two patients with breast cancer use methylene blue to test axillary sentinel lymph node. Sentinel lymph node was moved with endoscopy, and endoscopic axillary lymph nod dissection was performed.