OBJECTIVETo explore the feasibility of the transdiferentiation of human breast adipose-derived stem cells (hbASCs) into mammary epithelial-like cells after co-culturing in Transwell in vitro.

METHODSThe third passage hbASC and the HBL-100 cell line were co-cultured in a Transwell culture system for 15 days. The hbASCs were observed and identified by inverted phase contrast microscope and transmission electron microscopy, and immunocytochemistry staining in the induced and control groups.

RESULTSBoth the third passage hbASCs and the HBL-100 cell line cells could adhere and grow rapidly after co-culture in the Transwell system. After co-culture for 15 days, the morphology of some induced hbASCs changed into epithelial-like cells. Some induced hbASCs showed positive expression of CK18, CK19 by immunocytochemistry staining, and typical epithelium cells with microvilli, desmosomes and tonofilaments observed under TEM. The positive rate of CK18 and CK19 was (24.4 +/- 12.0)% and (21.6 +/- 16.4)% in experimental group, and (1.8 +/- 1.7)% and (1.1 +/- 0.6)% in control group.

CONCLUSIONThe data suggests that hbASCs may have the potential to transdifferentiate into human mammary epithelial-like cells after co-culturing in Transwell in vitro.

Adipose Tissue ; cytology ; Breast ; cytology ; Cell Differentiation ; Cells, Cultured ; Coculture Techniques ; Epithelial Cells ; cytology ; Female ; Humans ; Stem Cells ; cytology

Objeetive To discuss a reasonable postoperative management of breast augmentation by polyacrylamide hydrogel (PAHG) injection.Methods The retrospective study was used to analyze 157 cases which received breast augmentation by PAHG injection.MRI was used in all of cases preoperatively.Among these patients,23 were located by three-dimensional (3D) reconstruction,the content of mono acrylamide in the serum of 71 cases were examined in the hydrogel of 23 cases and in the tissue around the hydrogel of 12 cases,respectively.The silicone gel implants were planted after the removal of PAHG in 7 cases.Results MRI-3D could show the injectants location,scope,layer and integrality more intuitional and more detailed.The momo acrylamide was found in the serum with 7 cases,in the hydrogel with 5 cases,in the tissue around the hydrogel with 3 cases.131 cases gained satisfactory results.All the cases received 3 to 6 months follow-up.The scleroma was not found after the palpation of breast.In the 7 cases that were planted with the silicone gel implants immediately,the shape and texture of the breast were both great.Conclusions The preoperative MRI examination is a first-choice,and if possible,3D reconstruction is better.With the detecting methods so far,there is no strong evidence to support the possibility of PAHG resolving into poisonous acrylamide inside the human body.During the operation,the injectant,the integument around the hydrogel and degenerative tissue should be orthoptically cleared-up as much as possible.Sucking the injectant blindly is not commended.The silicon gel prosthesis is planted to reconstruct the shape of breast immediately,but the prerequisite is that the patients have this demand and that the muscle is intact without inflammation.

OBJECTIVE: To discuss using expanded forehead flap to repair defects around nasal tip and to find a standard and rational repairing method. METHOD: Three-staged operations were adopted. The first stage is to implant expander. The second stage is to reconstruct defects around nasal tip using the expanded forehead flap with the supra trochlear vessels as its pedicle. If necessary, the autogenous cartilage was harvested from ribs and used as a nasal framework, which reestablished the projection of the tip. The third stage is to conduct the pedicle resection and repairing. RESULT: Seventeen patients who suffered from defects around nasal tip were cured using the expanded forehead flap. These flaps survived well. The appearance of nasal tips and ventilation function were very nice. CONCLUSION The expanded forehead flap is an ideal method to reconstruct defects around nasal tip. The advantages of this method are safety, good appearance, matched colour and luster, and covert scar of donor site.
Adolescent ; Adult ; Dilatation ; Female ; Forehead ; surgery ; Humans ; Male ; Nose ; injuries ; surgery ; Rhinoplasty ; methods ; Skin Transplantation ; Surgical Flaps ; Young Adult

Objective: To report the effect of the free anterolateral thigh flap with KISS technique in reconstruction of scalp defect. Methods: 11 patients with scalp tumor were treated with radical resection and free transfer of the anterolateral thigh flap with KISS technique from March 2016 to June 2017. The flap was designed carrying two skin pedals according to preoperative detection of perforators, then the flap was dissected to carry one main pedicle or two different pedicles, after that two skin pedals were assembled with the KISS technique to cover the wound. Results: No total failure of flap was observed. No donor-site complication was observed. The contour of reconstructed scalp was satisfactory. Conclusions The free anterolateral thigh flap with KISS technique is reliable in reconstruction of scalp defect. It features low donor site morbidity, high reconstructive efficiency and reliable perfusion.