Oncogene and antioncogene play contrary effects on the cell growth and proliferation controlling process, and cancer occurs when the presence of imbalance expression between them. That means there is yin-yang relationship between oncogene (yang) and antioncogene (yin), and also inside both of them. Taking the oncogene myc and antioncogene p53 for example, the yin gene p53 acts, in the yin side, to promote cell apoptosis and inhibit cell growth, while in the yang side, it facilitates for repairing the injured DNA to keep cell survival; the yang gene myc, promoting cell growth and proliferation in the yang side and inducing cell apoptosis in the yin side. To elucidate the yin-yang reactions between oncogene and antioncogene would be of important significance in the all-round and profound research of cancer.
Genes, Tumor Suppressor ; Humans ; Medicine, Chinese Traditional ; Neoplasms ; genetics ; Oncogenes ; genetics ; Proto-Oncogene Proteins c-myc ; metabolism ; Tumor Suppressor Protein p53 ; metabolism ; Yin-Yang

Objective To investigate the diagnosis and treatment of primary hyperparathyroidism (PHPT) with urolithiasis.Methods The clinical data of 9 PHPT patients who were evaluated with simple metabolic evaluation in 881 urolithiasis from 2000 to 2005 were summarized and the references were reviewed.Results The level of serum calcium was (2.96±0.48)mmol/L before operation, (1.94±0.42) mmol/L after operation.The level of parathyroid hormone(PTH) was(1133.53±788.21)pmol/L before op-eration,(74.52±49.17)pmol/L after operation.The level of serum calcium and PTH changed significantly after the parathyroidectomy (P<0.01).Follow-up for 14 months to 6 years.the ureteral stones fragments with lithotripsy were clear after 3 months and followed without recurrence,although the renal stones without lithotripsy were followed with no significant change.Conclusions Increase of serum calcium or increase of PTH above double with normal serum calcium may be helpful for diagnosis of PHPT with urolithiasis.Ureteral stone with PHPT should be treated together.Renal stone with PHPT may be followed up after the parathv-roidectomy,and be treated until the complications were occurred.It suggests that the maidend diagnosed pa-tient with urolithiasis should be added with simple metabolic evaluation,including serum calcium, phospho-nium and PTH.

Objective To study correlation between MRI signal intensity of the lumbar intervertebral disc and collagen content in the nucleus pulposus.Methods Thirty-one cases with lumbar intervertebral disc herniation(male 21,female 10)received percutaneous lumbar disketetomy.Thirty-one specimens of nucleous pulposus were obtained from percutaneous lumbar disketctomy procedure and collagen content in them was measured with reformed hydroxyproline measurement method.The signal intensity(SI) of lumbar intervertebral disc and cerebrospinal fluid was measured in T_2 WI sagittal image and then ratio of disc SI to cerebrospinal fluid SI was calculated.The Pearson analysis was used to analyze the correlation between the collagen content and SI ratio and disc SI on T_2 WI.Results Collagen content and SI ratio were (231.0?63.5)mg/g and 0.19?0.07,respectively.There was negative correlation between them (r=-0.61,P

There exists a remarkably progress in molecular modification and artificial evolution of microbial enzymes in recent years. Error-prone polymerase chain reaction and DNA shuffling have been developed and successfully applied and a lot of startling achievements have been obtained in artificial evolution of enzymes.

Objective To report the microsurgical outeome of the meningiomas located in the eranio- cervical junction.Methods Seven eases of meningiomas arising from the craniocervical junction operated with microsurgical technique by use of the posterior approaehes including the suboccipital approach,the lower lateral suhoecipital approach and for lateral approach.Reviewed the related ariieales and were analysed relative to their approach selection and outcomes were analysed.Results The tumors ranged in size from 0.8 to 4.8 cm and the tumors location with 2 cases posterior,3 cases anterior and 2 cases lateral to the brain stem.3 in 7 cases were operated by use of the suboccipital approach,2 in 7 cases with the lower lateral suboccipital ap- proach and 2 in 7 cases with farlateral approach.Total excisions were got in 6 of 7 cases,4 in 6 cases with Simpson gradeⅠand 2 in 6 cases withⅡ.The subtotal excision was got in 1 of 7 cass.Follow-up with 6 ca- ses between 6 to 36 months,the occupied symptoms in 6 cases improved good.No remnant tumor and recur- rent were found in the MRI follow-up.Conclusion By using of the proper posterior approaches,the micro- surgical outonmes of the meningiomas arising from craniocervical junction are good.

OBJECTIVETo analyze the radiological parameters of the conservatively in treating distal radius fracture and investigate whether the final re-displacement can be predicted after primary reduction.

METHODSFrom January 2013 to June 2014,212 patients with distal radial fracture conservatively were treated in our hospital, 107 patients of them were excluded because of their incomplete radiological parameters;the remaining 105 patients were available for radiological were assessed after injury, there were 56 male patients and 49 female patients in this study, the average age of the patients was 51 years old (ranged from 22 to 80 years). According to AO classification, there were 47 cases of type A2 and C1, and 58 cases of type A3, C2, C3. All patients were treated by closed reduction and below-elbow cast immobilization for 4 to 6 weeks. All patients were followed up for 3 to 6 months (means 4.5 months) by X-ray, all fractures were healed. Standard AP and lateral radiographic examination was conducted before reduction and after reduction and bony consolidation,the dorsal angulation and the radial angle were measured at each time point. The linear regression was used for the analysis to find out whether the final re-displacement can be predicted after primary reduction.

RESULTSAmong 105 patients,the significant correlations were found for the dorsal angulation between the reduction time and the end time (r = 0.82) and for the radial angulation between the reduction time and end time (r = 0.85).

CONCLUSIONThe dorsal angulation and the radial angulation after complete healing can be predicted from linear the regression functions. Due to the possibility of predicting the end result, whether the fracture should receive further conservative treatment or surgical treatment can be decided immediately.

Adult ; Aged ; Aged, 80 and over ; Female ; Humans ; Male ; Middle Aged ; Predictive Value of Tests ; Radiography ; Radius Fractures ; diagnostic imaging ; therapy

OBJECTIVETo assess the safety of hyperbaric oxygen in the treatment of radiation-induced hemorrhagic cystitis in patients with prostate cancer, and to investigate its effect on the growth of indolent prostate cancer in vivo.

METHODSThirty severe combined-immunodeficient mice received subcutaneous injection of human prostate cancer LNCaP cells. Then they were randomized to an experimental and a control group and exposed to 20 sessions of hyperbaric oxygen and normobaric air, respectively, followed by a 4-week observation on the growth of the transplanted tumors and analyses of their histopathological features at 28 days, including the volume, microvessel density (CD34), apoptosis markers (p53 and p27 proteins) and the proliferation index (Ki-67) of the LNCaP tumors.

RESULTSOn the 28th day after tumor vaccination, the tumor volume was (120 +/- 7.9) mm3 in the HBO and (122 +/- 8.2) mm3 in the control group; the microvessel density and the expressions of Ki-67, p53 and p27 were 39.3 +/- 5.2, (78.1 +/- 7.6)%, (40.4 +/- 6.2)% and (63.7 +/- 5.1)% in the former, and 36.2 +/- 4.9, (75.3 +/- 8.4)%, (44.2 +/- 5.7)% and (61.5 +/- 5.5)% in the latter. There were no significant differences in all the indexes above between the two groups (P > 0.05).

CONCLUSIONHyperbaric oxygen did not promote the growth of indolent prostate cancer in the murine model, nor did it have any significant effect on the new vessels.

Animals ; Cell Line, Tumor ; Humans ; Hyperbaric Oxygenation ; Male ; Mice ; Mice, SCID ; Prostatic Neoplasms ; Xenograft Model Antitumor Assays

OBJECTIVETo observe the therapeutic effect of acupoint magnetic medicated plaster therapy on cirrhosis after hepatitis.

METHODSOne hundred and twenty patients with cirrhosis after hepatitis were randomly divided into 2 groups. The control group (n=60) were treated by the hepatic protective therapy (diammonium glyeyrrhiznate, Silymarin, compound Tanshin, vitamin E), and the treatment group were treated by the liver-protective therapy and acupoint magnetic medicated plaster therapy, for 2-6 therapeutic courses. Clinical symptoms, hepatic function, serum markers of hepatitis B virus and indexes of hepatic fibrosis were investigated.

RESULTSThe markedly effective rate and the total effective rate were 65.0% and 95.0% in the treatment group, and 43.3% and 91.7% in the control group, and the serum indexes of hepatic fibrosis decreased signficantly, with significantly diferences (all P < 0.05).

CONCLUSIONAcupoint magnetic medicated plaster therapy can improve clinical symptoms, rapidly restore hepatic function, decrease serum indexes of hepatic fibrosis in the patient of cirrhosis after hepatitis.

Acupuncture Points ; Biomarkers ; Digestion ; Hepatitis ; Humans ; Liver Cirrhosis ; drug therapy

OBJECTIVETo study the filtration efficiency of a positive pressure powered air purifying medical protective equipment and the effect of the flow rate on the microenvironment of the equipment.

METHODSThe filtration efficiency of high efficiency particulate air (HEPA) filter was measured with the biologic aerosol of simulating virus (Escherichia coli bacteriophage f(2)). The simulation work was done at the walk rate of 4 km/h in summer. The effect of the flow rate on the oxygen content, the carbon dioxide content, the temperature and the humidity of the microenvironment of the equipment was investigated. The clinical experiments were conducted in three appointed hospital for fighting against SARS.

RESULTSThe HEPA filter could filtrate 99.99% simulating viruses in the air. When the flow rate ranged from 75 to 125 L/min, the microenvironment parameters of the equipment were: the oxygen content was between 19.6% and 20.1% (the physiological safety limit is more than 14.6%); the carbon dioxide content ranged from 0.43% to 0.57% (the physiological safety limit is less than 1.0%); the temperature was between 32.0 degrees C to 32.2 degrees C; the humidity ranged from 49.7% to 59.4% (the physiological safety limit is the temperature 31 degrees C and the humidity 85% or temperature 38 degrees C and humidity 50%). Each microenvironment parameter met the demand of a healthy person under the normal workload. In the clinical experiments, the doctors wearing the equipment who performed the tracheotomy for a SARS patient in a deep coma were not infected.

CONCLUSIONThe medical protective equipment can protect the doctor and nurse in SARS contaminated areas effectively and improve their work conditions.

Air ; analysis ; Air Microbiology ; Carbon Dioxide ; analysis ; Colony Count, Microbial ; Humans ; Humidity ; Occupational Medicine ; instrumentation ; Oxygen ; analysis ; Protective Devices ; Respiratory Protective Devices ; Temperature ; Ventilation

OBJECTIVETo prepare the alpha-asarone reservoir patch and investigate its release and transdermal absorption characteristics in vitro. The efficient enhancers were chosen to improve the drug's permeation rate.

METHODThe alpha-asarone reservoir patch was prepared using 1% hydroxypropyl methylcellulose (HPMC) of ethanol solution as medium and ethylene vinyl acetate (EVA) membrane to control the release of drug. The Franz diffusion cells were used and several permeation enhancers were evaluated. High performance liquid chromatorgraphy (HPLC) was used to determine alpha-asarone's content and permeation rate.

RESULTThe release mechanisms of alpha K-asarone patch in vitro coincided with zero-order kinetic. 30% ethanol cooperates with 1% Isopropyl Myristate (IPM) have the best effect on permeation of the patch. The permeation rate reaches (20.67 +/- 1.33) microg x cm(-2) h(-1).

CONCLUSIONEthanol combined with IPM is good permeation enhancer, which facilitated the permeation of alpha K-asarone to fit the clinical requirements. However, the further studies of the skin's stimulation and bioavailability are needed.

Acorus ; chemistry ; Administration, Cutaneous ; Anisoles ; administration & dosage ; isolation & purification ; pharmacokinetics ; Delayed-Action Preparations ; administration & dosage ; pharmacokinetics ; Ethanol ; pharmacology ; Humans ; Hypromellose Derivatives ; In Vitro Techniques ; Methylcellulose ; analogs & derivatives ; chemistry ; Myristates ; pharmacology ; Plants, Medicinal ; chemistry ; Polyvinyls ; chemistry ; Skin ; drug effects ; metabolism ; Skin Absorption ; drug effects