OBJECTIVETo investigate the toxic effects of decabromodiphenyl ethane (DBDPE), used as an alternative to decabromodiphenyl ether in vitro.

METHODSHepG2 cells were cultured in the presence of DBDPE at various concentrations (3.125-100.0 mg/L) for 24, 48, and 72 h respectively and the toxic effect of DBDPE was studied.

RESULTSAs evaluated by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide and lactate dehydrogenase assays and nuclear morphological changes, DBDPE inhibited HepG2 viability in a time- and dose-dependent manner within a range of 12.5 mg/L to 100 mg/L and for 48 h and 72 h. Induction of apoptosis was detected at 12.5-100 mg/L at 48 h and 72 h by propidium iodide staining, accompanied with overproduction of reactive oxygen species (ROS). Furthermore, N-acetyl-L-cysteine, a widely used ROS scavenger, significantly reduced DBDPE-induced ROS levels and increased HepG2 cells viability.

CONCLUSIONDBDPE has cytotoxic and anti-proliferation effect and can induce apoptosis in which ROS plays an important role.

Apoptosis ; drug effects ; Bromobenzenes ; toxicity ; Cell Survival ; drug effects ; Dose-Response Relationship, Drug ; Environmental Pollutants ; toxicity ; Hep G2 Cells ; Humans ; Reactive Oxygen Species ; Time Factors

OBJECTIVEto investigate the pattern of the blood supply and the nerve distribution of breast, in order to find a way for short-scar reduction mammaplasty.

METHODSTwelve adult women cadavers were investigated for the vascularture of the anterior thorax and the nerve distribution of the breasts by using the blood vessel casting, specimen transparency technique and the autopsy. Based on the anatomical study, a modified double-circle reduction mammaplasty technique was designed to treat 28 patients with hypertrophical breasts.

RESULTSThere existed two- or three-layers vasculature in the anterior thorax. The extensive vertical vascular anastomoses were found among the three layers. The cutaneous perforators, penetrated out of the pectoralis major muscle, were formed a dense vessel network in the retromammary space. The vertical vessels thereafter emerged from the network, passed through gland and linked to the subcutaneous vessels. These vertical vessels were smaller and denser above the fourth intercostal space, but they were larger and sparser below the fourth intercostal space. The innervation of the nipple-areola mainly came from the lateral deep branches of the 4th intercostal nerve. It appeared S-shape running into the dropped breasts. The 28 patients were successfully treated with the modified technique, except one case with the loss of the nipple-areola sense.

CONCLUSIONThe modified double-circle reduction mammaplasty could maximally fulfill the blood supply to the remained gland and the innervations to the nipple-areola, by keeping the advantages of the traditional technique such as invisible scar, good projection and the long lasting results. It could also be a safe and reliable technique.

Adolescent ; Adult ; Aged ; Blood Vessels ; anatomy & histology ; Breast ; blood supply ; innervation ; surgery ; Cadaver ; Female ; Humans ; Mammaplasty ; methods ; Models, Anatomic ; Nervous System ; anatomy & histology ; Treatment Outcome

OBJECTIVEThe purpose of this study was to search for a perfect treatment for the complications after polyacrylamide hydrogel injection for augmentation mammaplasty.

METHODS48 patients who accepted polyacrylamide hydrogel injection for augmentation mammaplasty were included in this study. Operations were performed for the complications of polyacrylamide hydrogel injection. The clinical data were analyzed and the experience in the treatment of the complications was summarized.

RESULTSAll patients were satisfied with the result of the operation. The B-ultrasonic examination showed that no visible polyacrylamide hydrogel remained in the cavity.

CONCLUSIONThe best therapy for the complications of polyacrylamide hydrogel injection was removing of the polyacrylamide hydrogel and the pathologic tissue and irrigation of the cavity.

Acrylic Resins ; administration & dosage ; Adult ; Female ; Humans ; Infection ; etiology ; surgery ; Injections ; Mammaplasty ; adverse effects ; methods ; Pain ; etiology ; surgery ; Postoperative Care ; Postoperative Complications ; etiology ; surgery ; Surgical Procedures, Operative ; standards ; Treatment Outcome

Adolescent ; Adult ; Dust ; analysis ; Female ; Health Status ; Humans ; Industry ; Male ; Middle Aged ; Occupational Exposure ; analysis ; Quartz ; Young Adult

OBJECTIVETo observe clinical therapeutic effect of scalp-acupuncture combined with exercise therapy on spastic cerebral palsy.

METHODSEighty children of spastic cerebral palsy were randomly divided into a scalp-acupuncture plus exercise therapy group and a exercise therapy group, 40 cases in each group. The scalp-acupuncture plus exercise therapy group were treated with scalp-acupuncture and exercise therapy, with Yundongqu (the motor area), Pinghengqu (the balance area), Ganjuequ (the sensory area), etc. selected for scalp-acupuncture, and puncture at main points Baihui (GV 20) and Sishencong (EX-HN 1) and exercise therapy. The exercise therapy group were treated by exercise therapy. Changes of GMFM scores and WeeFIM scores before and after treatment were compared.

RESULTSThere were significant differences in GMFM scores and WeeFIM scores before and treatment in the scalp-acupuncture plus exercise therapy group (P < 0.001) and in the exercise therapy group (P < 0.05), the former being better than the later (P < 0.05); the total effective rate was 92.5% in the scalp-acupuncture plus exercise therapy group and 72.5% in the exercise therapy group with a significant difference between the two groups (P < 0.05), the former being significantly higher than the later.

CONCLUSIONThe scalp-acupuncture combined with exercise therapy can improve motor function of limits of children with spastic cerebral palsy, with therapeutic effect better than that of simple exercise therapy.

Acupuncture Therapy ; Cerebral Palsy ; physiopathology ; rehabilitation ; therapy ; Child ; Child, Preschool ; Combined Modality Therapy ; Exercise Therapy ; Female ; Humans ; Male ; Meridians ; Motor Activity

OBJECTIVETo analysis various complications of 30 patients of breast augmentation by injected polyacrylamide hydrogel and discuss the treatment through periareolar incision.

METHODSAll patients were classified according to the different complications. Open suction technique and partial mastectomies via periareolar incisions were performed in all patients, Only one patient had immediately breast reconstruction with prosthesis, five patients received secondarily breast prostheses implantation via a axillary incision.

RESULTAll the symptoms were relieved after remove of polyacrylamide hydrogel.

CONCLUSIONSPolyacrylamide hydrogel should be prohibited for injected breast augmentation at present. A double-blinded randomized clinical study, controlled animal experiments and a large sample questionnaire survey for complications are necessary. The periareolar approach is valuable technique and can remove polyacrylamide hydrogel as completely as possible.

Acrylic Resins ; administration & dosage ; Adolescent ; Adult ; Female ; Humans ; Mammaplasty ; adverse effects ; Mammary Glands, Human ; surgery ; Postoperative Complications ; surgery ; Young Adult

OBJECTIVETo investigate the oxidative damage to lung tissue and peripherial blood in PM2.5-treated rats.

METHODSPM2.5 samples were collected using an auto-sampling instrument in summer and winter. Treated samples were endotracheally instilled into rats. Activity of reduced glutathione peroxidase (GSH-Px) and concentration of malondialdehyde (MDA) were used as oxidative damage biomarkers of lung tissue and peripheral blood detected with the biochemical method. DNA migration length (microm) and rate of tail were used as DNA damage biomarkers of lung tissue and peripheral blood detected with the biochemical method.

RESULTSThe activity of GSH-Px and the concentration of MDA in lung tissue significantly decreased after exposure to PM2.5 for 7-14 days. In peripheral blood, the concentration of MDA decreased, but the activity of GSH-Px increased 7 and 14 days after experiments. The two indicators had a dose-effect relation and similar changing tendency in lung tissue and peripheral blood. The DNA migration length (microm) and rate of tail in lung tissue and peripheral blood significantly increased 7 and 14 days after exposure to PM2.5. The two indicators had a dose-effect relation and similar changing tendency in lung tissue and peripheral blood.

CONCLUSIONPM2.5 has a definite oxidative effect on lung tissue and peripheral blood. The activity of GSH-Px and the concentration of MDA are valuable biomarkers of oxidative lung tissue damage induced by PM2.5. The DNA migration length (microm) and rate of tail are simple and valuable biomarkers of PM2.5-induced DNA damage in lung tissues and peripheral blood. The degree of DNA damage in peripheral blood can predict the degree of DNA damage in lung tissue.

Animals ; DNA Damage ; drug effects ; Drug Administration Routes ; Drug Administration Schedule ; Lung ; drug effects ; pathology ; Lung Diseases ; blood ; chemically induced ; pathology ; Male ; Oxidative Stress ; Particle Size ; Particulate Matter ; administration & dosage ; toxicity ; Rats ; Rats, Wistar ; Seasons

OBJECTIVETo investigate the effect of recombinant adenovirus (phosphatidylinositol-3-kinases(PI3K)(I()-RNAi-AD which blocks the class I( PI3K signaling pathway on gastric carcinoma cells xenografts in nude mice.

METHODSSubcutaneous tumor models of nude mice were established with SGC7901 cells and randomly divided into PI3K(I()-RNAi-AD group, NC-RNAi-GFP-AD group and control group. The tumor size and the inhibitory rate of tumor growth on days 3, 6, and 9 after cell transplantation were measured. The expression of TNF-α, COX2, P53, PCNA, E-cadherin and nm23/DNPK in tumor tissues were detected by immunohistochemistry.

RESULTSTumor growth was significantly inhibited in the PI3K(I()-RNAi-AD group(14.2%, 21.0%, and 28.1%) on days 3, 6, 9 compared with NC-RNAi-GFP-AD group(1.3%, 1.9%, and 2.0%, all P<0.05). The expressions of TNF-α, P53, E-cadherin and nm23/DNPK were up-regulated, and the expressions of COX2 and PCNA were down-regulated in the PI3K(I()-RNAi-AD group by immunohistochemical staining(all P<0.05).

CONCLUSIONSPI3K(I()-RNAi-AD can inhibit the growth of SGC7901 cell transplantation tumor in vivo in nude mice by inhibiting cell growth, reducing the capacity of tumor invasion and inhibiting tumor angiogenesis.

Adenoviridae ; Animals ; Cell Line, Tumor ; Cell Proliferation ; Class I Phosphatidylinositol 3-Kinases ; Heterografts ; Humans ; Mice ; Mice, Inbred BALB C ; Mice, Nude ; Phosphatidylinositol 3-Kinases ; Phosphatidylinositols ; Stomach Neoplasms

OBJECTIVETo introduce a operation method of repairing the abdominal defect with abdominoplasty and polypropylene.

METHODS27 patients were treated with abdominoplasty and polypropylene.

RESULTSFollow up 3 - 20 months, the focus in inferior abdominal wall were removed thoroughly. The incision is cure with A level. No weakness, bulk, hernia and complication occur in the abdominal wall.

CONCLUSIONSThe method of repairing the abdominal defect with abdominoplasty and polypropylene is a good method. It is a simple method. Its' result is relied.

Abdominal Wall ; pathology ; surgery ; Adult ; Aged ; Female ; Follow-Up Studies ; Humans ; Middle Aged ; Polypropylenes ; Reconstructive Surgical Procedures ; methods ; Surgery, Plastic ; methods

OBJECTIVETo introduce a new method for enlarging the survival area of an expanded flap.

METHODSAfter the skin expander was inflated with enough injection, the first delaying was performed. In the operation, two incisions were made in the skin and subcutaneous tissue superficial to the expander capsule on both sides of the long axis of the expanded flap. After 10 to 14 days, the second delaying followed, in which one pedicle was divided to form a unilateral-pedicled, super-long random flap. When the flap was transferred to the recipient Since 2000,this technique has been used in 16 patients. All the area, the door site was closed directly.

RESULTSflaps survived completely.

CONCLUSIONSThe technique of twice delaying can enlarge the survival area of the expanded skin flap.

Adolescent ; Adult ; Child ; Cicatrix ; surgery ; Female ; Follow-Up Studies ; Humans ; Male ; Reconstructive Surgical Procedures ; methods ; Skin Transplantation ; methods ; Surgical Flaps