Initial exploration of choice of the donor site of flap and its repair strategy / 中华烧伤杂志

Objective@#To explore the choice of the donor site of flap and the repair method of secondary wound of flap donor site in tissue repair and reconstruction operation.@*Methods@#From January 2014 to September 2018, 62 cases of scar contracture deformity, 15 cases of skin tumor, 20 cases of skin and soft tissue injury, and 25 cases of chronic wound were admitted to the Burn Center of People′s Liberation Army of First Affiliated Hospital of Air Force Medical University, with 84 males and 38 females, aged from 3 to 89 years. Four repair strategies adopted for tissue repair and reconstruction and good repair of the donor site of flap were as follows: designing the flap rationally according to the condition around the wound or the size and shape of wound, choosing pre-expanded technique of the donor site of flap for repair of scar deformity optimally, making full use of the surrounding condition of flap donor site, and repaired with the distal flap, i. e. replacing the important site with secondary site. The donor site of flap was repaired by direct suture or peripheral flap and distal flap. The wound size of patients ranged from 3.0 cm×2.0 cm to 20.0 cm×18.0 cm, and the flap area ranged from 3.5 cm×2.0 cm to 25.0 cm×22.0 cm. The survival condition of flap, healing condition of donor site and recipient site, and follow-up condition of donor site and recipient site were recorded.@*Results@#Wounds of 122 patients were repaired with a total of 148 flaps designed by the above four repair strategies. All the flaps survived well, and the wound and flap donor site healed well. Follow-up for 3 to 36 months showed that the shape and function of recipient site and flap donor site were satisfactory.@*Conclusions@#According to the specific condition of the wound and anatomical structure of the surrounding tissue of flap donor site, overall surgical design with flexibility and personalization can achieve effects of good repair of the wound and reduce the secondary damage of flap donor site.

Effects of free superficial temporal fascia flaps and skin grafts in repairing deep wounds in posterior ankle region of extensively burned patients / 中华烧伤杂志

Objective@#To observe the effects of the method of combining free superficial temporal fascia flaps with skin grafts in repairing deep wounds in posterior ankle region of extensively burned patients.@*Methods@#From September 2013 to February 2017, 11 extensively burned patients with deep tissue defects in posterior ankle region were treated in our unit. Two patients had tissue defects in bilateral posterior ankle regions. The wound sizes ranged from 5.8 cm×4.6 cm to 11.7 cm×5.2 cm. Free superficial temporal fascia flaps with the same sizes as the wounds were designed and resected to repair wounds in posterior ankle regions after debridement. The proximal end of superficial temporal veins and posterior tibial veins were performed with end-to-end anastomosis, and superficial temporal arteries and posterior tibial arteries were performed with end-to-side anastomosis. Skin grafts were resected to cover the superficial temporal fascia flaps according to patients′ condition of donor sites. The donor sites were sutured directly.@*Results@#All fascial flaps in 11 patients survived, while 2 skin grafts had partial necrosis, and they healed after secondary skin graft. All patients were followed up for 6 to 13 months, and the shape and function of the operation sites in all patients recovered well.@*Conclusions@#The method of combining free superficial temporal fascia flaps with skin grafts can repair deep wounds in posterior ankle regions of extensively burned patients. It has the advantages of good appearances in the recipient sites, strong resistances to infection of fascia flaps, minimal damages to the donor sites, short course of disease, and good prognosis of patients.

Clinical study of pulsed dye laser fine therapy for hypertrophic scar / 中国医师杂志

Objective To compare the efficacy and safety of pulsed dye laser with different parameters in the treatment of hypertrophic scar after burn.Methods From January 2016 to June 2016,122 patients with hypertrophic scar after burn were treated in our unit.The data were analyzed retrospectively.According to the pulse width and energy of pulsed dye laser treatment,there were 31 cases with 0.45 ms-low energy,28 cases with 0.45 ms-high energy,37 cases with 1.5 ms-low energy and 26 cases with 1.5 ms-high energy,which were treated once every 3-4 weeks.The Vancouver Scar Scale (VSS) was used to evaluate the scar condition before and after treatment,and the pain of patients was scored by VAS before and after treatment.The blood flow of scar site was monitored before and 12 months after treatment,and the blood perfusion was recorded.The patients'satisfaction was recorded 3 to 6 months after treatment,and the satisfaction rate was calculated.Results (1) The VSS scores of 0.45 ms-low energy,0.45 ms-high energy,1.5 ms-low energy and 1.5 ms-high energy groups after treatment were significantly lower than those before treatment in each group (t =11.3,9.0,14.1,12.7,P ＜ 0.05).After treatment,the VSS scores of each group decreased by (5.8 ± 1.1),(5.2 ± 1.4),(4.1 ±0.8) and (4.0 ±0.9),respectively,with significant differences among the four groups (F =4.2,P ＜ 0.05).Except for 1.5 ms pulse width,there was no significant difference in the effect of low-energy and high-energy treatment (P ＞ 0.05),but there was significant difference in the effect of other treatment groups(t =7.29,4.81,6.91,5.11,4.74,P ＜0.05).(2)The VAS scores of the 4 groups after treatment were significantly lower than those before treatment in each group (t =7.1,5.2,4.1,6.6,P ＜ 0.05);the VAS scores of each group after treatment decreased by 3.9 ± 1.3,5.1 ± 0.9,3.5 ± 0.6,4.9 ± 0.9,respectively,with significant statistical differences among the four groups (F =8.8,P ＜ 0.05).Regardless of the pulse width of 0.45 ms or 1.5 ms,the pain degree of scar improved more in the high energy group than in the low energy group (t =6.4,2.2,3.4,4.74,P ＜0.05).(3) Four groups of scar blood perfusion decreased.(4) The satisfaction of the four groups were 82.3％,79.1％,84.5％,77.7％,respectively.There was no significant difference in satisfaction evaluation among the four groups (P ＞ 0.05).Conclusions The therapeutic effect of pulsed dye laser on hypertrophic scar is very exact,and the treatment parameters of 0.45 ms pulse width and low energy 4-6 J/cm2 are recommended,which provide clinical basis for the prevention and treatment of scar and the application of pulsed dye laser.It is worthy of clinical application.

Effects of ultrathin abdomen flap on repairing deep electric burn wounds in finger of pediatric patients / 中华烧伤杂志

Objective@#To investigate the effects of ultrathin abdomen flap in repairing deep electric burn wounds in finger of pediatric patients.@*Methods@#A total of 14 pediatric patients with simple electric burns in finger were admitted to our unit from March 2013 to October 2017. Six patients had electric burns in one finger, 5 patients had electric burns in two fingers, and 3 patients had electric burns in three fingers. The size of wounds in single finger ranged from 2.0 cm×1.0 cm to 3.5 cm×2.0 cm. After complete preoperative examination, wounds debridement and ultrathin abdomen flap repair operation were performed on 3 to 6 days post injury. Six pediatric patients were treated with abdominal random flap, 4 patients were treated with inferior epigastric artery paraumbilical perforator bilobed flap, and the other 4 patients were treated with superficial circumflex iliac artery bilobed flap. The size of flaps ranged from 4.0 cm×2.0 cm to 8.0 cm×4.0 cm. The donor sites were sutured directly.@*Results@#The flaps of 14 pediatric patients survived well after operation, and no flap showed blood supplying disorder. During follow-up of 3 to 24 months, the appearance and function of fingers were good, and the donor sites recovered well, with no cicatrix contracture deformity.@*Conclusions@#The ultrathin abdomen flap is one of the good choices for repairing deep electric burn wounds in finger of pediatric patients.

A review of the 60 years of Department of Burns and Cutaneous Surgery in Xijing Hospital / 中华烧伤杂志

This article briefly introduces the development history of Department of Burns and Cutaneous Surgery in Xijing Hospital of Air Force Medical University (the former the Fourth Military Medical University) since its establishment more than 60 years ago. The medical staff of the department have been adhering to the treatment concept of the older generation of experts and professors, applying the principles and methods of plastic surgery to the treatment of deep burn wounds. Furthermore, the new techniques in the field of flap surgery, microsurgery, and minimally invasive surgery are applied to repair various complex wounds after burn/trauma and severe scar deformities. Our department has formed our own distinctive technical features and contributed to the development of burn cause in China.

Clinical comparative study of pulsed dye laser and ultra-pulsed fractional carbon dioxide laser in the treatment of hypertrophic scars after burns / 中华烧伤杂志

Objective@#To compare the efficacy and safety of pulsed dye laser (PDL) and ultra-pulsed fractional carbon dioxide laser (UFCL) in treating hypertrophic scars after burns.@*Methods@#Two hundred and twenty one patients with hypertrophic scar after burns conforming to the study criteria were admitted to our unit from February 2015 to October 2017, and their data were retrospectively analyzed. Patients were divided into group PDL (n=122) and group UFCL (n=99) according to the treatment method. Patients in group PDL were treated with PDL once every 3-4 weeks. Patients in group UFCL were treated with UFCL once every 6-12 weeks. Patients in both groups were treated until 12 months after having scar. Scars were scored by Vancouver Scar Scale (VSS) before and after treatment. Patients′ pain was evaluated by Visual Analogue Scale (VAS) method before and after treatment. Blood flow in scar was monitored and recorded before treatment and in treatment months 6 and 12. Satisfaction degree of patients was recorded 3-6 months after treatment, and the satisfaction rate was calculated. Adverse reactions including duration of erythema/purpura, VAS in treatment, and loss of working time were recorded. Data were processed with one-way analysis of variance, t test, and Chi-square test.@*Results@#(1) VSS scores of patients in groups PDL and UFCL after treatment were significantly lower than those before treatment in the same group (t=11.34, 12.77, P<0.05). The decreasing VSS scores of patients after treatment in groups PDL and UFCL were (5.8±1.1) and (6.0±1.4) points, respectively, and there was no statistically significant difference between the two groups (t=1.91, P>0.05). (2) VAS of patients in groups PDL and UFCL after treatment were significantly lower than those before treatment in the same group (t=7.12, 5.23, P<0.05). The decreasing VAS of patients after treatment in groups PDL and UFCL were (4.0±0.6) and (3.2±1.3) points, respectively, and there was no statistically significant difference between the two groups (t=1.93, P>0.05). (3) Scar blood flow of patients in group PDL in treatment months 6 had no obvious change compared with that before treatment (t=1.59, P>0.05), while that in treatment months 12 significantly decreased compared with that before treatment and that in treatment months 6 (t=3.17, 6.96, P<0.05). Scar blood flow of patients in group UFCL in treatment months 6 significantly increased compared with that before treatment (t=6.01, P<0.05), while that in treatment months 12 significantly decreased compared with that in treatment months 6 (t=4.52, P<0.05), but had no obvious change compared with that before treatment (t=0.92, P>0.05). (4) The satisfaction degree of patients in group PDL was 80.3% (98/122), which in group UFCL was 76.8% (76/99), and there was no statistically significant difference between the two groups (χ2=0.97, P>0.05). (5) The duration of erythema/purpura of patients in group PDL was (5.2±0.7) d, significantly shorter than (6.1±0.5) d in group UFCL (t=2.49, P<0.05). The VAS of patients in group PDL during treatment was (1.9±0.9) points, significantly lower than (4.7±0.4) points in group UFCL (t=4.85, P<0.05). Loss of working time of patients in group UFCL was (9.17±0.72) d, which was significantly longer than (3.96±0.23) d in group PDL (t=3.17, P<0.05).@*Conclusions@#PDL and UFCL have definite effects on hypertrophic scar, while PDL with light pain, minor wound, and fast recovery time, is safe and effective for treatment of early hypertrophic scar and worthy of clinical promotion and application, especially for children and patients with poor pain tolerance.

Application of superficial iliac island flap in wound repair after resection of mons pubis hypertrophic scar / 中国医师杂志

Objective To explore the repair effect of the superficial iliac island flap for the hypertrophic scar of mons pubis after burned.Methods From July 2013 to July 2016,the author had treated 26 patients with mons pubis hypertrophic scar after burned.There were 19 males and 7 females among them.The age was from 1 year and 5 months to 10 years old.The scar area was of 6 cm ×5 cm-15 cm ×8 cm.Some of the patients had external genital malformations caused by scar contracture.Surgery removed the scar and completely released the basic shape of the vulva.It had to expand the superficial iliac island flap of 1 cm according to the size of the wound,and sufficient length of vascular pedicle according to the distance from the wound to the flap.The flap was cut in the superficial of the deep fascia,and reserved about 2cm wide fat along the superficial iliac artery.The superficial vein was located in the fat.The wound was covered by the flap,which was rotated directly or through a subcutaneous tunnel.Results Twenty six patients were treated with a single operation and no vascular crisis occurred.All the flaps survived.One patient delayed incision healing due to the high incision tension,and the remaining patients were in primary healing.The postoperative follow-up found that all the flaps had thin thickness,similar color to the surrounding skin,soft texture and feeling.Conclusions There are obvious signs of scarring in the mons pubis area after deep burns,and scar contracture can cause vulvar deformity.The superficial iliac island flap,which has a thin thickness,soft texture,similar color,and can be sutured directly for the donor site,is a good choice to repair the mons pubis hypertrophic scar.

Clinical efficacy of pre-expanded deltopectoral flap on repairing post-burn faciocervical scars / 中华医学美学美容杂志

Objective To explore the method of pre expanded deltopectoral flap for repairing post burn faciocervical scars.Methods Anterior axillary incisions were made and appropriate expanders were implanted above anterior chest wall at the first stage.After a 4 6 months' expanding,the flaps based on perforating branches of the internal mammary artery,branches from the thoracoacromi al area,or perforating branches from deltoid muscle,were designed and raised according to scars and dominant vessels.The donor sites were closed at same time without skin graft.Results 43 patients with 51 flaps were operated for reconstruction of post burn faciocervical scars.All flaps and donor sites survived well.Conclusions Pre expanded deltopectoral flap is an ideal donor site for repairing post-burn faciocervical scars.

Effects of activating silent information regulator 1 on early kidney damage in rats with severe burn / 中华烧伤杂志

Objective@#To investigate the effects of activating silent information regulator 1 (SIRT1) on the early kidney damage in rats with severe burn.@*Methods@#Thirty healthy male SD rats were divided into sham injury group (SI), pure burn group (PB), and SIRT1 activator group (SA) according to the random number table, with 10 rats in each group. Rats in groups PB and SA were inflicted with 30% total body surface area full-thickness scald (hereinafter referred to as burn) on the back. Immediately after injury, rats in group PB were intraperitoneally injected with normal saline in the dosage of 50 mL/kg, and those in group SA with 1 mg/mL (final mass concentration) resveratrol in the dosage of 50 mL/kg. Rats in group SI were sham injured and intraperitoneally injected with normal saline in the dosage of 50 mL/kg immediately after injury. Kidney tissue and abdominal aorta blood of rats in the three groups were collected at 24 hours after injury. The morphology of kidney tissue was observed after HE staining. The serum content of creatinine and urea nitrogen was determined with enzyme-linked immunosorbent assay. Protein expressions of SIRT1, Bax, and Bcl-2 in kidney tissue were determined with Western blotting. mRNA expressions of tumor necrosis factor-alpha (TNF-α), interleukin-1 beta (IL-1β), and IL-10 in kidney tissue were determined with real-time fluorescent quantitative reverse transcription polymerase chain reaction. Data were processed with one-way analysis of variance and LSD-t test.@*Results@#(1) In rats of group SI, structures of kidney tubules and glomeruli were intact. In rats of group PB, structures of kidney tubules were not clear with casts in them, and glomeruli showed pyknosis. In rats of group SA, structures of kidney tubules were relatively intact, and the pyknosis of glomeruli were slighter as compared with that of group PB with fewer glomeruli showing pyknosis. (2) The serum content of creatinine and urea nitrogen in rats of group PB was (67±14) μmol/L and (22.0±4.4) mmol/L, respectively, which was significantly higher than that of group SI [(28±7) μmol/L and (5.5±1.2) mmol/L respectively, with t values respectively 6.07 and 11.53, P values below 0.01]. The serum content of creatinine and urea nitrogen in rats of group SA was (39±9) μmol/L and (14.1±1.7) mmol/L, respectively, significantly lower than that of group PB (with t values respectively 4.09 and 4.17, P values below 0.01). (3) Compared with those of group SI, protein expressions of SIRT1 and Bcl-2 in kidney tissue of rats in group PB were significantly decreased (with t values respectively 16.32 and 19.58, P values below 0.01), while the protein expression of Bax was significantly increased (t=5.98, P<0.01). Compared with those of group PB, protein expressions of SIRT1 and Bcl-2 in kidney tissue of rats in group SA were significantly increased (with t values respectively 6.94 and 5.37, P values below 0.01), while the protein expression of Bax was significantly decreased (t=3.44, P<0.01). (4) mRNA expressions of TNF-α, IL-1β, and IL-10 in kidney tissue of rats in group PB were 17.0±4.0, 2.27±0.59, and 2.5±0.9, respectively, significantly higher than those of group SI (1.0, 1.00, and 1.0, respectively, with t values from 3.27 to 8.93, P<0.05 or P<0.01). mRNA expressions of TNF-α and IL-1β in kidney tissue of rats in group SA were 6.8±1.2 and 1.18±0.26, respectively, significantly lower than those of group PB (with t values respectively 4.59 and 4.32, P values below 0.01). mRNA expression of IL-10 in kidney tissue of rats in group SA was 5.0±1.0, significantly higher than that of group PB (t=5.51, P<0.01).@*Conclusions@#Activating SIRT1 on early stage of severe burn in rats can decrease levels of creatinine and urea nitrogen, thus improving the kidney function. It can down-regulate the protein expression of Bax and up-regulate the protein expression of Bcl-2, thus reducing the apoptosis in kidney tissue. Meanwhile, it can inhibit expressions of TNF-α and IL-1β and promote the expression of IL-10, thus alleviating the inflammatory response in kidney.

The design and clinical application of anterior branch of subcostal artery perforator flap / 中华整形外科杂志

Objective@#To investigate the anterior branch of subcostal artery perforator flap for defects at the lower abdomen or distal sites.@*Methods@#Ten patients were treated, including 6 males and 4 females, aged 25 to 62 years, mean (38.2 ± 6.5) years old. The anterior branch of subcostal artery perforator flap was designed in 10 cases, of which 1 case was free flap carrying the accompanying nerve. 9 cases had defects at abdomen and 1 case at the foot. The flaps size was 4 cm×8 cm-7 cm ×15 cm.@*Results@#All the 10 flaps survived completely with no vascular crisis. The abdominal shape was good with only linear scar. The free flap was used for plantar wound with nerve anastomosis of accompanying nerve with the medial plantar nerve. During the follow-up period of 6 months, the flap sensory recovery area reached more than 60% with two-point discrimination as 20-25 mm.@*Conclusions@#The anterior branch of subcostal artery perforator flap has a stable vascular pedicle with reliable vascular network and sensory nerve.

Comparative Study on Analgesic Effect of Simiao Junyi Ointment with Different Extraction Process / 中国药师

Objective:To screen the best extraction process of four medicinal materials in Simiao Junyi ointment by analgesic ex-periments. Methods:The analgesic experiments were performed by the hot-plate test and writhing test in mice to select the best extrac-tion process of four medicinal materials in Simiao Junyi ointment. Results:According to the results of level consistency check, the data of hot-plate test in mice in different groups had no significant difference, and the pesticide effect of Simiao Junyi ointment prepared by different extraction process was similar. However, the data of writhing test had significant difference. The extraction process of the oint-ment with the best analgesic activity was as follows:pepper and rhizoma corydalis were extracted by SFE-CO2 , myrrha and pseudo-gin-seng was extracted by 95% and 50% ethanol, respectively. Conclusion: The optimal extraction process tested by analgesic experi-ments is scientific, reasonable and feasible, and suitable for the research and development of modern traditional Chinese medicine preparations.

Effects of reactive by burn rat serum oxygen species on apoptosis of pulmonary microvascular endothelial cells induced / 中华烧伤杂志

<p><b>OBJECTIVE</b>To observe the level of intracellular reactive oxygen species (ROS) in rats with severe burn and pulmonary microvascular endothelial cells (PMVECs) treated with serum of rat with burn injury, and to investigate the relationship between ROS and apoptosis of PMVECs.</p><p><b>METHODS</b>(1) Twenty-four SD rats were divided into sham injury group ( n = 3) and burn group (n = 21) according to the random number table (the same grouping method below). Rats in burn group were inflicted with 30% TBSA full-thickness scald on the back, and rats in sham injury group were sham injured. Blood samples were collected from abdominal aorta at post injury hour 6, 12, 24, 36, 48, 60, 72 respectively from 3 rats of burn group. The serum content of ROS was assayed by ELISA. The same determination was performed in rats of sham injury group. (2) Five rats were subjected to scald injury as above, and burn serum was prepared 24 hours after injury. Another 5 rats without receiving any treatment were used to prepare normal serum. (3) Marginal pulmonary tissue was harvested from 20 SD young rats. Cells were cultured with tissue block method and indentified with immunohistochemical staining. The third passage of PMVECs in logarithmic phase were inoculated in 6-well plates and 12-well plates. PMVECs in both plates were divided into 4 groups: normal serum group, burn serum group, normal serum + MnTBAP group, and burn serum + MnTBAP group, with 3 wells in each group. Cells in the former 2 groups were respectively cultured with special nutrient solution of endothelial cells without serum added with 15% healthy rat serum or 15% burn rat serum. Cells in the latter 2 groups were cultured with the same culture conditions as in the former two groups correspondingly with addition of 100 µmol/L MnTBAP in the nutrient solution. After being cultured for 24 h, the content of ROS in PMVECs in 6-well plates was detected with flow cytometry. The apoptosis of PMVECs in 12-well plates was observed with acridine orange-ethidium bromide staining, and the apoptosis rate was calculated. Data were processed with one-way analysis of variance and LSD-t test.</p><p><b>RESULTS</b>(1) The serum contents of ROS in rats of burn group were respectively (187 ± 21), (235 ± 22), (231 ± 25), (291 ± 20), (315 ±23) nmol/mL at post injury hour 24, 36, 48, 60, 72, which were significantly higher than that in sham injury group [(141 ± 19) nmol/mL, with t values respectively 7. 86, 9. 57, 13. 87, 14.98, 18.40, P values below 0.01]. (2) Primary cells grew slowly and showed a cobblestone appearance. After passages, cells grew with orderly distribution. The positive rate of coagulation factor VIII of cells was (96 ± 5)% , and thus they were identified as PMVECs. (3) In normal serum group, burn serum group, normal serum + MnTBAP group, and burn serum + MnTBAP group, the contents of ROS in PMVECs were respectively 798 ± 40, 1 294 ± 84, 763 ± 59, 926 ± 42 ( F =93.01, P <0.01), and the apoptosis rates of PMVECs were respectively (6.2 ± 1.3)%, (57.3 ± 6. 7)%, (3.7 ± 0. 8)%, (28.7 ± 5. 7)% (F = 224.50, P <0.01) after being cultured for 24 h. Compared with those of normal serum group, the content of ROS and apoptosis rate of PMVECs in burn serum group increased significantly (with t values respectively 10.40 and 49.06, P values below 0.01). The content of ROS and apoptosis rate of PMVECs in burn serum + MnTBAP group were significantly lower than those in burn serum group (with t values respectively 7.48 and 23.94, P values below 0.01).</p><p><b>CONCLUSIONS</b>Serum content of ROS was increased in severely burned rats. Burn rat serum stimulation on PMVECs can lead to the increase of the intracellular ROS and induce apoptosis. However application of MnTBAP can scavenge ROS and reduce the apoptosis induced by burn rat serum.</p>

Screening of DOC-2 interactive proteins and identification of the interaction between DOC-2 and TGF?Ⅲ receptor / 中国癌症杂志

Background and purpose:DOC-2 serves as one of the tumor suppressing genes in human ovarian cancer and plays a role in the process of cell growth and differentiation.This study was to investigate the role of DOC-2 in the TGF? signal pathway and verification of the interaction between DOC-2 and TGF?Ⅲ receptor.Methods:The bait vector was constructed by inserting the PID domain of DOC-2(nDOC-2)into yeast express vector pGBKT7.pGBKT7-nDOC2 was transformed into the yeast AH109 and confirmed to be expressed.After the human foetus brain cDNA library had been transformed,the positive clones was screened by both nutrition defect medium and X-?-gal.The putative positive clones were sequenced and analyzed to get the DOC-2 interactive proteins.Furthermore,after the DOC-2 cDNA and TGF?Ⅲ receptor cDNA had been co-transfected into the human ovarian cancer cell line HO-8910 together,the interaction between DOC-2 and TGF?Ⅲ receptor was investigated by immunoprecipitation and Western blot.Results:21 putative positive clones were picked after being screened and sequenced.Three of them were identified as Homo sapiens partial mRNA for betaglycan(TBR Ⅲ gene),homo sapiens protocadherin gamma subfamily C3(PCDHGC3)and APLP1(amyloid beta precursor-like protein 1).The analysis by immunoprecipitation and Western blot showed that the interaction between DOC-2 and TGF?Ⅲ receptor could form protein complex.Conclusions:The three encoding proteins might participate in the DOC-2 signal pathway.DOC-2 might play as an essential role in the TGF?signal pathway by interacting with TGF?Ⅲ receptor.

The impact of DOC-2 expression on the tumorigenesis of human ovarian cancer cell line(HO-8910) / 中国癌症杂志

Background and purpose:Studies have shown that DOC-2 could work as a potential tumor suppressor geue,and the role of DOC-2 in terms of the inhibition of cell growth and its mechanism remain unknown.Our paper is to investigate the effect and mechanism of DOC-2 expression on the tumorigenesis viability of ovarian cancer cell line HO-8910 from the aspects of clone efficiency,cell cycle and animal model test.Methods:Three cell lines were used including HO-8910,8910-P93(transfected with DOC-2 gene) and 8910-pcDNA3.1(transfected with the vector pcDNA3.1).Firstly,soft agar method was used to measure the clone efficiency.The cell cycle were analyzed by flow cytometer.The tumorigenesis viability was compared by athymic mouse test.Results:After being transfected with DOC-2 gene,the clone efficiency of 8910-P93 was markedly reduced.There was no difference between the 8910-pcDNA3.1 and HO-8910.G1 and G2 arrest were observed for 8910-P93.The athymic mouse test showed that the neoplasm derived from 8910-P93 was much smaller than that in the controls.Conclusions:DOC-2 could iniibit the tumorigenesis viability of human ovarian cancer line HO-8910.

Senescence of human keloid fibroblasts induced by wild p16 gene in vitro / 中华创伤杂志

Objective To investigate the biological effect of wild p16 gene on senescence of human keloid fibroblasts (HKFb) and discuss the feasibility of gene therapy on keloid. Methods Firstly, the HKFb was transfected with pcDNA3-p16 and the positive clones selected by G418. Then, the fibroblast changes were investigated by determining growth curve, cycle profile and ultrastructure of the transfected HKFb. Meanwhile, morphological changes of the transfected HKFb were identified by senescence associated-?-galactosidase staining. Results After HKFb was transfected by p16, the morphology of HKFb changed obviously from the third passage on. The cell proliferation was inhibited markedly and the cell cycle profile analysis showed that about 96.7% cells were trapped in stage G1. The electroscopic analysis of HKFb also showed that the lysosomes were overloaded. Senescence associated-?-galactosidase staining identified the senescence of HKFb. Conclusions The wild p16 gene can induce the HKFb into senescence in advance, as may provide experimental basis for gene therapy on human keloid.

Studies on Quality Standard of Wanbile Wan / 中药新药与临床药理

Objective To set up the quality standard of Wanbile Wan. Method s Fructus Psoraleae, Radix Puerariae, Radix paeoniae Alba and Radix Glycyrrhiza e Preparatae in Wanbile Wan were identified by TLC .Isopsoralen was determined b y TLC scanning. The chromatographic conditions were: high performance silica gel G plate as lamellated plate, n- hexane - ethyl acetate (8 ∶ 2)being the exp ander, serrated scanning with single- wavelength reflection, beam stricture of 0.4? 0.4 mm, linear parameter SX=3 and scanning wavelength at 300 nm. Results The TLC spots were highly specific, clear and concentrated without interferen ce of the presence of negative controls. Isopsoralen showed a good linearity wit hin the range of 0.064～ 1.536 ? g, r=0.9980, average recovery rate was 100.7 % , and RSD was 2.0% .Conclusion This method can be used for the quality co ntrol of Wanbile Wan.