Based on the requirement of biology education development,the article analyzes the approach to improve the teaching quality of medical biology from quality education,subjiect intercrossing or 'regression' and 'outspread',and offers new ideas for education reform and innovation of the medical biology.

Objective To study the feasibility of transperitoneal laparoscopic radical prostatectomy. Methods Laparoscopic radical prostatectomy was performed according to Montsouris technique. Results All the operations were successfully completed. The operating time was 330~540 min (mean, 433 min) and the estimated blood loss was 100~550 ml (mean, 274 ml). No patients required a blood transfusion. Bladder injury was found in 1 patient and was sutured promptly during the operation. The postoperative hospital stay was 15~23 days (mean, 17 days). The catheterization time was 14~23 days (mean, 16 days). In 2 patients presenting with urinary leakage, the catheter was removed at 20 and 23 days after surgery respectively, while in the remaining 8 patients, at 2 weeks after operation. Mild urinary incontinence occurred in 3 patients and disappeared after 4 weeks of supportive treatment. Pathological examinations revealed stage pT_ 1c) in 3 patients, stage pT_2 in 6, and stage pT_3 in 1. A follow-up for 3~21 months (mean, 7.5 months) was carried out. The postoperative prostate-specific antigen (PSA) level was 0~2.70 ?g/L(mean,0.05 ?g/L). Two patients returned a normal sexual function. Conclusions Strict following surgical indications, adequate preoperative preparation, improvement of surgical techniques, and proper application of surgical instruments and devices make transperitoneal laparoscopic radical prostatectomy feasible.

Objective To explore the role of CD4+CD25+CD127low/-regulatory T cells (Tregs) in the pathogenesis of psoriasis vulgaris(PV). Methods Flow cytometry analysis was used to detect the amount of Tregs in peripheral blood and ELISA to test the levels of IL-10 and TGF-β1 in blood serum; the suppressive function of Tregs on autologous CD4+CD25-T cells was determined by MTT method. Results No significant difference was found in the proportion of Tregs in PV patients and healthy controls(P>0.05). There was a diminished suppression of Tregs from patients on autologous CD4+CD25- responder T cell proliferation in PV patients when compared with that in controls (P < 0.01). The serum level of IL-10 in patients was lower than that in controls (P < 0.01) while that of TGF-β1 in PV patients was significantly higher than that in controls(P < 0.01). Conclusion Abnormal function of Tregs and low secretion of IL-10 in PV patients might be related to the pathogenesis of psoriasis.

Objective To investigate the clinical outcome of post-traumatic tibial osteomyelitis treated by induced membrane technique combined with the antibiotic cement-coated locking plate.Methods A restrospective case series analysis was made on 71 cases of post-traumatic tibial osteomyelitis treated by induced membrane technique from September 2014 to September 2014.There were 55 males and 16 females, aged 18-60 years(mean, 37.4 years).Mean length of bone defect following debridement was 4.5 cm(range, 4-11 cm).Antibiotic cement-coated locking plates were used to provide the stability of the bone defects after one-stage debridement.Bone grafting and exchanging the plates with ntramedullary nails were done during the second-stage surgery.Parameters were monitored dynamically after operation to evaluate infection recurrence and bone healing, including C-reactive protein (CRP), erythrocyte sedimentation rate (ESR), clinical features(sinus formation, redness and swelling, warmth and pain) and X-ray films of the involved limbs.Results All patients were followed up for 13-25 months (mean, 19.5 months).There was no sign of recurring infection and CRP and ESR were normal in all cases after the first stage surgery.However, four cases (6%) had recurrent infection with sinus exudates and their CRP and ESR were abnormal after the second stage surgery, and further treatments were carried out on these patients.Follow-up showed bony union in all patients within mean 5.5 months (range, 4-6 months).Conclusion Induced membrane technique with antibiotic cement-coated locking plates for treatment of post-traumatic tibial osteomyelitis can shorten bone healing time and decrease infection recurrent rate without obvious impact on osteogenic activity.

Objective: To explore the effect of suberoylanilide hydroxamic acid (SAHA) improving cardiac hypertrophy via inhibiting histone deacetylases (HDAC) in experimental mice and to provide a new idea for prevention and treatment of cardiac hypertrophy. Methods: Cardiac hypertrophy mice model was established by thoracic aorta ligation. A total of 60 Kunming mice were randomly divided into 4 groups: Normal control group, Sham operation group, Cardiac hypertrophy (CH) group and CH+SAHA group. There were 6 mice used in each group. Myocardial cell morphology was observed by HE staining, cardiac function was assessed by echocardiography, mRNA and protein expressions of HDAC5 (the isoform of HDAC) and β-MHC were examined by RT-PCR and Western blot analysis. Results: The mice in CH group had myocardial cell hypertrophy, disordered arrangement and hyperchromatic nucleus. Compared with Sham operation group, CH group showed decreased left ventricular end diastolic diameter (LVEDD), left ventricular end diastolic volume (LVEDV) and increased thickness of inter-ventricular septum (IVS), allP<0.05; CH group presented elevated mRNA and protein expressions of HDAC5 and β-MHC,P<0.05. SAHA obviously decreased HDAC5 expression, down regulated cardiac hypertrophy related β-MHC gene expression, improved cardiac function and hypertrophy, all P<0.05. Conclusion: HDAC were involved in myocardial hypertrophy; SAHA could inhibit HDAC expression and therefore,improved myocardial hypertrophy in experimental mice.

Hexanes ; adverse effects ; Humans ; Occupational Injuries ; chemically induced ; Pyrroles ; adverse effects ; Trauma, Nervous System ; chemically induced

Objective Glucose metabolism trend was dynamicly mornitored following liver transplantation, and its affecting factors were assessed. Methods The glucose metabolism status were assessed at four time points respectively after liver transplants, then they were divided into two groups:normal glucose metabolism (NGM) and abnormal glucose metabolism (AGM). The clinical data were univariate analyzed and multivariate analyzed to screen the risk factors. Results At 1 month, 3 months, 1 year and 3 years post-transplantation, the incidence of AGM were 74.0%, 43.9%, 29.4%, 24.1% respectively Between these two groups, age > 45 y had a significant difference at 1 month, 3 months, 1 year and 3years post-transplantation; the use of tacrolimus had a significant difference at 3 months, 1 year and 3years post-transplantation, but the dose of tacrolimus or tacrolimus blood concentration showed no significant difference; high dose of glucocorticoid had significant difference at 1 month , 3 months post-transplantation; high BMI and acute rejection had significant difference at 1 month post-transplantation. Conclusions There is a high incidence of abnormal glucose metabolism (AGM) in the early stage post-transplantation, and a considerable number of patients' glucose metabolism improved in the later period. Age>45 y and tacrolimus affect glucose metabolism for a longer period post-transplants. High BMI and acute rejection have an impact on glucose metabolism only in the early stage post-transplantation. Large dose of glucocorticoid affect glucose metabolism for at least 3 months post-transplantation , and there is no significant difference after 1 year.

Objective To investigate the diagnosis and treatment of cystic renal cell carcinoma.Methods The clinical data of 67 cases of cystic renal cell carcinoma treated from January 2005 to April 2013 were analyzed retrospectively.Preoperative imaging procedures indicated masses of renal cysts in 67 cases,including malignant tumors in 59 cases.Intraoperative pathological examination was performed in 59 cases and the pathological results showed malignant tumors in 56 cases,renal cyst in 2 cases and multilocular cyst of kidney in 1 case.The surgical procedures included radical nephrectomy (n=19),partial nephrectomy (n =12),retroperitoneal laparoscopic radical nephrectomy (n =9),retroperitoneal laparoscopic partial nephrectomy (n =20),retroperitoneal laparoscopic cyst unroofed then transferred to radical nephrectomy (n =6),and retroperitoneal laparoscopic partial nephrectomy transferred to radical nephrectomy (n =1).Results The 67 cases were diagnosed as renal carcinoma,including clear renal cell carcinoma with cystic changes in 31 cases and multilocular renal cell carcinoma in 36 cases.Sixty-two cases were followed up for 10-110 months (median 56 months),and there was no recurrence or metastasis,among which 7 cases diagnosed as benign pre-operation or intra-operation but malignant by pathological examination after surgery were followed up for 61-103 months (median 82 months).Conclusions Imaging plays an important role in the early diagnosis of cystic renal cell carcinoma.Intraoperative pathological examination should be performed in suspected cases.Nephron-sparing surgery is preferred with good outcome.

BACKGROUND:According to the core functional zone of amino acid sequence of the osteoinduction in bone morphogenetic proteins, our research group synthesized bone morphogenetic protein (BMP) active polypeptides Ⅰ and Ⅱ by artificial solid-state synthesis method. OBJECTIVE: To evaluate the osteoinductive ability of BMP active polypeptides Ⅰ and Ⅱ in animals. METHODS:Forty-two Sprague-Dawley rats were randomly divided into seven groups, and respectively implanted with hydroxyapatite/polylactic acid carrying 0.2, 0.4, 0.8 g/L BMP active polypeptides I, hydroxyapatite/polylactic acid carrying 0.2, 0.4, 0.8 g/L BMP active polypeptides Ⅱ, and hydroxyapatite/polylactic acid alone. At 3 and 5 weeks postoperatively, X-ray, CT and histological detection were conducted to evaluate osteoinductive conditions in the seven groups. RESULTS AND CONCLUSION:At 3 and 5 weeks postoperatively, there were better local osteoinductive effects in the groups hydroxyapatite/polylactic acid carrying BMP active polypeptides Ⅰ and Ⅱ than the group of hydroxyapatite/polylactic acid, indicating both two kinds of BMP active polypeptides possessed a certain osteoinductive ability. Moreover, this osteoinductive ability became stronger with time. At 5 weeks postoperatively, the osteoinductive effect in the 0.4 and 0.8 g/L BMP active polypeptides I groups was better than that in the 0.2 g/L BMP active polypeptides I group and the 0.2, 0.4 and 0.8 BMP active polypeptides Ⅱ groups (P < 0.05). In addition, there was no difference in the osteoinductive effect of 0.4 and 0.8 g/L BMP active polypeptides I groups. These results indicate that BMP active polypeptides I has a stronger osteoinductive ability than BMP active polypeptides Ⅱ.

Objective To analyze the clinical features of patients with prostate adenocarcinoma under 50 years.Methods Between January 2008 and April 2014,we reviewed 21 cases with prostate cancer under 50 years old.The mean age in those patients was 48 years old (ranged 42-49 years old).Their tPSA level was elevated,including＞10 μg/L in 17 cases,4-10 μg/L in 4 cases.21 cases were all confirmed by pathology.The results Gleason score showed 6 scores in 3 cases,7 scores in 6 cases (3+4 scores in 5 cases and 4+3 scores in one case),8 scores in 7 cases and 9 scores in 5 cases.In the study,clinical stage was for T2N0M0 in 16 cases,T3N0M0 in 1 case,T4NxM0 in 1 case and T3-4N1M1 in 3 cases.The treatments were hormonal therapy was chosen in 5 cases and radical prostatectomy was performed in 16 cases,including 16 cases with T2N0M0 stage and one case with T3N0M0.Results In those patients who accepted the radical prostatectomy,the duration of follow-up ranged from 3 to 65 months (mean 23 months).During the follow-up,14 patients had a lower incidence of biochemical recurrence.1 patient (T2,PSA 82.8 μg/L,GS 9) had external beam radiotherapy one month after the radical prostatectomy because of tumor invasion into the prostatic capsule.Then his PSA level returned to the 0.2 μg/L.1 patient (T3,PSA 38.9 μg/L,GS 8) had external beam radiotherapy 18 months after the radical prostatectomy because of biochemical recurrence and the tPSA level returned to the 4.0 μg/L.All patients who underwent radical prostatectomy had favourable recovery of urinary continence.In 5 patients who had androgen deprivation therapy,2 patients died after 63 or 65 months and one patient was lost to follow-up.The PSA level in one patient decreased from 71.8 μg/L to 2 μg/L after four months treatment.One patient had castration resistant prostate cancer and the adjuvant external beam radiotherapy was considered,subsequently.Conclusions Men under the 50 years old,who are diagnosed with localised prostate cancer,usually demonstrated the early clinic stage and high Gleason scores.It should not be discouraged from RP.Young men with metastatic prostate cancer have a poor prognosis.