OBJECTIVETo investigate the effects of locking plate fixation through lateral deltoid approach for proximal humeral fracture combined with micro-invasive percutaneous plating (MIPPO) technique.

METHODSFrom April 2009 to March 2012,26 patients with proximal humeral fractures were treated with proximal humeral locking system plate fixation through lateral deltoid approach, including 17 males and 9 females with an average age of 58 years old ranging from 28 to 76 years old. The time from injury to operation was 3 to 10 days (averaged 5.6 days). According to Neer typing for the proximal humeral fractures, 7 cases had 2 parts of fracture,15 had 3 parts of fracture,and 4 had 4 parts of fracture. The Neer score for shoulder function was evaluated.

RESULTSAll patients were followed up,and the duration ranged from 10 to 21 months (averaged 13.6 months). All patients were achieved bony union,the average healing time was 12.5 weeks (ranged from 10 to 21 weeks). No humeral head necrosis and axillary nerve injury occurred. According to Neer scoring system,the total score was 88.36 +/- 7.82, pain 30.82 +/- 3.24, function 23.76 +/- 5.71, activity 17.59 +/- 5.36, anatomical position 7.03 +/- 2.39; the result was excellent in 18 cases, good in 5 cases, fair in 2 cases, poor in 1 case.

CONCLUSIONLateral deltoid approach combined with locking plate fixation for treatment of proximal humeral fracture has advantages of small invasion,less blood lossing, short operative time, stable fixation, high rate of fracture healing, and satisfactory functional recovery.

Adult ; Aged ; Bone Plates ; Female ; Fracture Fixation, Internal ; instrumentation ; methods ; Humans ; Humeral Fractures ; surgery ; Male ; Middle Aged ; Shoulder Fractures ; surgery ; Treatment Outcome

OBJECTIVETo explore the methods and therapeutic effects of trans-fibular anterior-lateral approach combined with external fixation in the treatment of Gustilo III distal tibiofibula fractures.

METHODSFrom 2007 to 2010,9 patients including 7 males and 2 females with the mean age of 40 years(ranging from 29 to 51 years). All patients received internal fixation of fibula after debridement on the first phase, external fixator were used to fix tibia across ankle joint, and removed after successful skin graft; The second phase tibia was used to fix through the lateral incision used in phase I. Early functional exercise was encouraged ,the union condition and functional results of the ankle joint was evealuated. The criteria of the AOFAS Foot and Ankle Surgery was used to evaluate the effects.

RESULTSAll patients were followed up,and the duration ranged for 8 to 37 months(averaged 21 months). Nine patients were achieved bony union, the average healing time was 24 weeks. No plate rupture or screw loosening was found. According to the AOFAS Foot and Ankle Surgery evaluation system, 3 cases got excellent results, 4 good cases and 2 fair.

CONCLUSIONTrans-fibular anterior-lateral approach combined with external fixation for Gustilo III distal tibiofibula fractures can receive satisfactory reset, debond ankle joint eralier and imporove the clinical effects.

Adult ; Female ; Fibula ; Fracture Fixation ; methods ; Fractures, Bone ; diagnostic imaging ; surgery ; Humans ; Male ; Middle Aged ; Radiography ; Tibia ; Treatment Outcome

AIM: To explore the frequency of drug injection of alloxan diabetes on the established model of rabbit.METHODS: Thirty-six healthy rabbits, weighing 2-2.5kg, were randomly divided into one time drug injection group (group A, n=12), two times drug injection group (group B, n=12) and three times drug injection group (group C, n=12). Each rabbit was injected with a total amount of 150mg/kg of alloxan. Fasting blood glucose was measured. The success rate and death rate of each group were also calculated.RESULTS: The success rate of diabetic rabbit model in group B was higher than that in group A (P<0.01) and its death rate was lower than that of group A (P<0.01); the success rate of diabetic rabbit model in group C was highest and the death rate was the lowest in three groups(P<0.01). CONCLUSION: Multiple administration of alloxan can improve success rate in establishing diabetic rabbit model with decreased death rate and increased stability.

AIMTo study the distributive character of safflor yellow A in mice.

METHODSA RP-HPLC method for the determination of safflor yellow A in tissues was established and applied to determine safflor yellow A in biological samples.

RESULTSAfter iv injection of Safflor yellow A in mice, the AUC of safflor yellow A was hightest in plasma, followed by kidney, liver, lung, heart, spleen. But it was not found in the brain.

CONCLUSIONThe distribution of safflor yellow A in the body is abroad and the speed of its process is swift.

Animals ; Carthamus tinctorius ; chemistry ; Chalcone ; analogs & derivatives ; blood ; isolation & purification ; pharmacokinetics ; Chromatography, High Pressure Liquid ; Female ; Flowers ; chemistry ; Male ; Mice ; Plants, Medicinal ; chemistry ; Quinones ; blood ; isolation & purification ; pharmacokinetics ; Tissue Distribution

OBJECTIVE: To observe cardiac ultrastructure and the expression of heat shock protein 70 (HSP70) and hypoxia inducible factor-lα (HIF-lα) in electric shock death rats and to explore the application of these indexes as the basis of medical identification in electric shock death. METHODS: Seventy-two SD rats were randomly divided into electric shock death group, postmortem electric shock group and the control group. The changes of myocardial ultrastructure were observed by transmission electron microscope, and the expressions of myocardial HSP70 and HIF-1α were observed by immunohistochemical technology. RESULTS: Myocardial myofibril fracture, mitochondrial cristae and membrane dissolution, and disordered arrangement of Z lines and M lines were observed in electric shock rats. HSP70 and HIF-lα were strong positive expressions in the electric shock death group, significantly compared with the control and postmortem electric shock groups (P < 0.05). CONCLUSION The expressions of HSP70 and HIF-lα were obviously increased in electric shock death group, which may be used as the diagnostic indicator of electric shock death.
Animals ; Death ; HSP70 Heat-Shock Proteins/metabolism* ; Hypoxia-Inducible Factor 1, alpha Subunit/metabolism* ; Myocardium/pathology* ; Rats ; Rats, Sprague-Dawley

OBJECTIVETo develop a rapid and reproducible method for the culture of human fetal hair follicle bulge cells, and observe the plasticity of its differentiation into sebaceous gland in vitro.

METHODSThe bulge cells isolated from fetal human hair follicles by enzymatic digestion (digestion method) and manual microdissection (conventional method) were cultured and passaged respectively, the efficiency and biological features of cells were investigated , the clone forming efficiency was assayed by MTT, and the expression of K19 was further compared by immunocytochemistry (ABC). The morphological change and the expression of EMA of bulge cells were also observed after induction.

RESULTSBy conventional method, 8-10 bulges were harvested in one hour, 40%-50% of their cells were found to adhere to the culture plate after culturing for 48h, and they became confluent after 14 days. In comparison, about 100 bulges were harvested in one hour by digestion method, the adherence efficiency of their cells was 30% after cultivation for 12h and became confluent after 7 days. The cells grew larger with time, with irregular shape and droplets of lipid around the nucleus. The clone forming efficiency of bulge cells cultured by digestion method was (18.2 +/- 2.1) %, which was much higher than that of cells obtained by conventional method[ (12.7 +/- 3.4) %, P < 0.05]. Immunocytochemistry staining showed that positive staining of K19 was observed in most of the bulge cells, with a large amount of brown granules in the cytoplasm.

CONCLUSIONHuman hair follicle bulge cells can be efficiently cultured and multiplied in vitro, and they retained the characteristics of stem cells. And they have the potential to differentiate into sebaceous glands by induction in vitro.

Cell Culture Techniques ; Cell Differentiation ; Cells, Cultured ; Fetal Stem Cells ; cytology ; Hair Follicle ; cytology ; Humans ; Sebaceous Glands ; cytology

OBJECTIVETo investigate the influence of non-peptide neuro-kinase 1 (NK1) receptor antagonist L-703, 606 on the early tissue edema formation in rats with deep partial-thickness scald.

METHODSOne hundred and fifty-two SD rats were enrolled in the study and were randomly divided into normal control (NC, n = 8), scald control (SC, n = 48, with 20% TBSA deep partial thickness scald), L-703, 606 treatment (LT, n = 48, with 20% TBSA deep partial-thickness scald 20 minutes after caudal vein injection of 250 nmol/kg L-703, 606) and beta-aescin treatment (AT, n = 48, with 20% TBSA deep-partial-thickness scald 30 minutes after caudal vein injection of 1.8 mg/kg beta-aescin) groups. The rats were sacrificed at 1, 4, 8, 24, 48 and 72 post scald hours (PSHs), with 8 rats at each time point. The peri-wound tissue and jejunum samples were harvested for the detection of vascular permeability and tissue water content with modified Evans blue extravasation method and average water content assay.

RESULTSThe vascular permeability was significantly higher in the peri-wound tissue and jejunum in SC, LT an AT groups than that in NC group (P < 0.01) at 1 PSH, and it decreased gradually at 4 PSH. The vascular permeability in the peri-wound tissue in LT and AT group was significantly lower than that in SC group (P < 0.01), and that in LT group was markedly higher than that in AT group (P < 0.01) at 48 and 72 PSHs. The vascular permeability of jejunum tissue in LT group was lower than that in SC group within 24 PSH (P < 0.01), while that in AT group was lower than that in LT group at the early postscald stage (P < 0.01), but no obvious difference was found between the two groups after 72 PSH (P > 0.05). The change in the tissue water content was as follows: Dehydration was observed in peri-wound tissue in SC, LT and AT groups at 1 PSH. The tissue water content increased gradually thereafter and reached the peak at 8 and 24 PSH. Certain degree of dehydration was observed in jejunum tissue in SC, LT and AT groups at early postscald stage. The water content in jejunum tissue in LT group was evidently higher than that in SC and AT groups (P < 0.05 or 0.01), edema was evident at 8 PSH, and it became more obvious at 48 PSH, then it subsided gradually. Edema was less evident in LT group.

CONCLUSIONNonpeptide NK1-receptor antagonist L-703, 606 was able to mitigate the vascular permeability and reduce tissue water content in peri-wound and jejunal tissues.

Animals ; Burns ; metabolism ; Capillary Permeability ; Disease Models, Animal ; Edema ; drug therapy ; Neurokinin-1 Receptor Antagonists ; Quinuclidines ; therapeutic use ; Rats ; Rats, Sprague-Dawley

OBJECTIVETo investigate the feasibility of fabricating tissue engineering skin with human hair follicle bulge cells (HFBCs) to repair full-thickness skin wound.

METHODSHFBCs and dermal papilla cells (DPCs) isolated from human fetal hair follicles by collagenase digestion were cultured, purified and passaged. PGA-collagen scaffolds as bioengineered dermis were randomly divided into A and B groups. The HFBCs and DPCs (1 : 2) were seeded in scaffolds of group A and the equal amount of DPCs was seeded in scaffolds of group B as control. Then the keratinocyte sheets were seeded onto the surfaces of the scaffolds as bioengineered epidermis. The tissue engineering skins were then transplanted to repair the full-thickness wound on the back of nude mice. The wound healing process was observed and the plant histological changes of the transplanted engineered skin was observed with light microscope on 2, 4, 6 post-operation weeks (POW).

RESULTSThe full-thickness defect of nude mice in A and B groups could be effectively repaired by bioengineered skins. On 2 POW, integral epidermal and dermal structures were observed in the wounds in A and B groups, with thin epithelial layer and basement membrane. On 4 POW, epithelial layer became thickening and rete pegs formation was observed in basement membrane in A group, but only thickening of epithelial layer was observed in B group. On 6 POW, rete pegs structure was seen to descend and hair-follicle-like structure was formed, while only thickened epithelial layer with flat basement membrane were formed in B group.

CONCLUSIONFrom the composite skin engineered with PGA-collagen hybrid scaffolds and keratinocytes, HFBCs and DPCs could effectively repair the full-thickness skin defect of nude mice. The hair follicle stem cells participate in the process of anatomic repair of wound, and might be able to induce the repair of skin structure and function.

Animals ; Cell Culture Techniques ; Cells, Cultured ; Dermis ; cytology ; Fetus ; cytology ; Hair Follicle ; cytology ; Humans ; Male ; Mice ; Mice, Nude ; Skin Transplantation ; Skin, Artificial ; Tissue Engineering ; methods

OBJECTIVETo compare clinical outcomes of superior labrum from anterior to posterior (SLAP) repair and biceps tenodesis in treating type I SLAP injury.

METHODSFrom March 2009 to March 2012, 38 patients with type II SLAP injury were treated with SLAP repair and biceps tenodesis, and all patients were unilateral SLAP injury. Sixteen patients treated with biceps tenodesis included 8 males and 7 females with an average age of (49.3±3.7) years old (ranged, 45 to 54); 10 cases were on the left side and 6 cases on the right side; 10 cases were caused by falling down, 2 cases were caused by throwing damage and 4 cases were caused by daily life damage; the time from injury to operation were from 3 to 8 weeks. Twenty-two patients treated with SLAP repair included 14 males and 8 females with an average age of (49.0±2.8) years old (ranged, 44 to 56); 13 cases were on the left side and 9 cases were on the right side; 14 cases were caused by falling down, 5 cases were caused by throwing damage and 3 cases were caused by daily life damage; the time from injury to operation were from 3 to 7 weeks. Preoperative, postoperative at 6 months, 1 year and 2 years' UCLA and SST score were compared between two groups.

RESULTSThere was no significant differences in UCLA and SST score between two groups before operation. At 6 months after operation, UCLA and SST score in biceps tenodesis group was higher than SLAP group, and action,range of anteflexion, strength of anteflexion, degree of satisfaction in biceps tenodesis group was higher than SLAP group. There was no significant meaning in SST and UCLA score between two groups at 1 and 2 years after operation.

CONCLUSIONShort-term efficacy of biceps tenodesis for SLAP injury is better than SLAP repair, but long-term efficacy is fairly.

Aged ; Case-Control Studies ; Female ; Humans ; Male ; Middle Aged ; Retrospective Studies ; Shoulder Joint ; injuries ; surgery ; Tendon Injuries ; surgery ; Tenodesis

Autopsy ; Coxsackievirus Infections ; Enterovirus ; isolation & purification ; Enterovirus B, Human ; isolation & purification ; Enterovirus Infections ; Hand, Foot and Mouth Disease ; pathology ; virology ; Humans ; Infant ; Male