AIM: To study the effects of L-arginine on sebaceous gland hyperplasia in rats. METHODS: 10 mg?kg -1?d -11 of L-arginine was poured into the stomach in Sprague-Dawley rats for 7-14 d. The pathology phenomenon was observed in the rat skin. RESULTS: The backside skin of the male SD rats showed dewiness, greasiness and engrained yellow. The incidence was 100% for 7 d in the male SD rats, 80% in the female SD rats for 14 d, but 100% in the immature female SD rats for 14 d. CONCLUSION: L-arg nine can facilitate the hyperplasia of sebaceous gland in SD rats.

To improve the development of postgraduate and build up the consciousness of competition, we should assess the overall quality of postgraduate generally. The quality is about mentality and moral, science and culture, innovation, practice, physical and psychological health. The assessment system must have these points followed: overall, whole course, trendy, continuous, synthetic.

Objective To investigate the effect of dexmedetomidine on norepinephrine(NE)release in midbrain periaqueductal gray(PAG)in a rat model of incisional pain.Methods Twenty-four male Wistar rats in which microdialvsis catheter was successfully placed in the ventrolateral region of PAG without complications were randomly divided into 4 groups(n=6 each):group control(group C);group incisional pain(group IP);group dexmetomidine(group D)and group dexmedetomidine+yohimbine(group DY).Incisional pain was induced by an incision made into the plantar surface of left hindpaw in IP,D,DY groups.Dexmedetomidine 30 μg/kg and dexmedetomidine 30 μg/kg+yohimbine 0.5 mg/kg were given intraperitoneally at 15 min before plantar incision in group D and group DY respectively.Mechanical paw withdrawal threshold(MWT)to von Frey filament stimulation was measured at 30 min before(baseline)and 1,2,3,4 h after operation in C,IP,D groups,and at 30 min before(baseline),and 1 h after operation in group DY.Dialysate samples were collected at 30 min before(baseline)and at evcry 30 min after operation for 4 h via cerebral microdialysis catheter for determination of the NE concentration in C,IP,D groups,and at 30 min before(baseline),30,60 min after operation in group DY.Results Incisional pain significantly decreased MWT and increased the NE concentration in dialysate in group IP.Dexmedetomidine premedication significantly inhibited mechanical hyperalgesia and attenuated incisional pain-induced increase in the NE concentration in dialysate in group D.Yohimbine counteracted effects of dexmedetomidine.Conclusion Dexmedetomidine has analgesic effect though inhibition of NE release from PAG.

Objective To evaluate the efficacy and safety of sorafenib in the treatment of advanced renal cell carcinoma.Methods The clinical date of 33 patients with advanced renal cell carcinoma from September 2007 to April 2012 was reviewed retrospectively.26 were males and 7 were females,with an average age of 69 years.Pathological diagnosis showed 30 clear cell RCCs,2 papillary RCCs,and 1 unclassified RCC.These patients were treated by sorafenib 400 mg twice a day until intolerable toxicity or disease progression.The primary end points were objective response rate,clinical benefit rate,median survival time,median progression-free survival and the incidence of adverse reaction.Results All patients were evaluable for response and toxicity,with 8 patients (24％) of partial remission,19 cases (58％) of stable disease,and 6 cases (18％) of disease progression.The disease control rate was 82％,the median progression-free survival was 10.2 months,while the median survival time was 16.5 months.The common adverse reactions included hand-foot skin reaction (61％),diarrhea (46％),hypertension (21％).Most adverse reactions occurred around the second week after drug therapy,with the duration unequal.The majority of adverse reactions could be released by symptomatic treatment,which did not affect the medication.Conclusion Sorafenib has good short term efficacy for patients with advanced renal cell carcinoma,and most adverse reactions were tolerable.

Objective: To study the feasibility of percutaneous absorption of Compound Patch of Hyperosteogeny(CPH). Methods: The content of ferulic acid,an index composition in percutaneous receptor fluid and release receptor fluid were determined by HPLC.Results: The results of in vitro transdermal delivery experiment and in vitro release experiment showed that ferulic acid permeated at the constant speed of 0.2142?g?cm -2 ?h -1 in 24 hours and its release coincided with Higuchi Equation.Futhermore,the release rate was 14.53?g?cm -2 ?h -1/2 . Conclusion: CPH is a skeleton controlledtransdermal delivery system whose permeation speed is limited by skin.

Objective To investigate the pharmacodynamics of different local anesthetics administered intrathecally for elderly patients undergoing transurethral resection of the prostate (TURP). Methods Ninety ASA Ⅰ - Ⅲ elderly patients, aged 69-82 yr, with body mass index less than 30 kg/m2 , undergoing TURP under combined spinal-epidural anesthesia, were randomly divided into 3 groups ( n = 30 each): levobupivacaine group (group L), ropivacaine group (group R) and bupivacaine group (group B). Group L, R and B received intrathecai (IT) 0.5 % levobupivacaine, 0.5 % ropivacaine and 0.5 % bupivacaine respectively. The initial dose was 7,10 and 6 mg in group L, R and B respectively. The ratio of two successive doses was 0.9. If the upper sensory block reached T10 within the 20 min after IT injection, the IT analgesia was considered to be effective. The median effective dose (EDs0) and 95 % confidence interval (95 % CI) were calculated by Dixon. Results The ED50 and 95% CI of levobupivacaine, ropivacaine and bupivacaine were 6.781 (95% CI 6.561-7.024) mg, 9.135 (95%CI8.670-9.616) mg and 5.170 (95% CI 5.012-5.333) ng respectively. The relative potency ratio between levobupivacaine, ropivacaine and bupivacaine is 0.76∶0.57∶1.00. ConclusionThe relative potency ratio be tween levobupivacaine, ropivacaine and bupivacaine is 0.76∶0.57∶1.00.

Objective To investigate the dynamic expression of nitric oxide synthase(NOS) in the apoptosis of primary cultured rat cortical neruons following hypoxia/reoxygenation(H/R) and the protective role of extract of ginkgo biloba(EGB). Methods The cortical neurons of E16-17 days fetal rat were primarily cultured.The apoptosis model of primary cultured cortical nurons following H/R was established by using W-G staning,electromicroscopy,TUNEL staining.The dynamic expression of NOS different H/R times was investigated with NADPH-diaphorase histochemical method. Results H/R can cause apoptosis of primary cultured rat cortical neurons.In the experiment of H-2R-0,H-4R-0, H-6R-0,H-8R-0 and H-2R 18,H-4R 18,H-6R 18 H-8R 18,the apoptosis cells occurred after 4 hour hypoxia.The increasing of apoptosis cell acted as time-dependence and the peak value was at H-8R 18.The expression of NOS increased both after 2 hour hypoxia and reoxygenation 18 hour after 8 hour hypoxia compared with the normal control group.EGB could inhibit the increasing and decrease the percentage of apoptosis.Conclusion The apoptosis of primary cultured rat cortical neurons could be induced by H/R.The increasing of NO might be one of the mechannisms of apoptosis.EGB could singnificantly inhibit the apoptosis by means of inhibiting the expression of NOS and reducing the production of NO.;

With the development of translational medicine,medical equipment has become a booster of clinical and basic research,and the visualization of the Chinese traditional pulse diagnosis apparatus,NX-8-type pulse information acquisition and analysis system achieved the digital pulse diagnosis and sublimated the method of diagnosis.By using the visual sensing technology and image acquisition and processing technology,NX-8 displays the B-type ultra-sound images.With the parameter set and added,not only the pulse beat can be seen clearly,as well as border,thickness and deformation,and hens to perform direct analysis of the blood vessel elasticity,but also the objective observing and study of the dual diagnostic pulse,Anti-off pulse and other special physiological structure can be realized.By measuring pulse wave velocity (PWV) and other indicators,NX-8-type pulse information acquisition and analysis system provides diagnosis and significant prevention of arteriosclerosis,hypertension,high cholesterol,angina and other cardiovascular diseases,and is expected to achieve a digital auxiliary diagnostic equipment of traditional Chinese medicine (TCM) Sizhen,and be applied to telemedicine and the field of space science and technology.It is like a milestone in the development of TCM diagnostic techniques.

Hematopoietic Stem Cell Transplantation ; methods ; Humans ; Leukemia, Myelogenous, Chronic, BCR-ABL Positive ; therapy ; Protein Kinase Inhibitors ; therapeutic use ; Protein-Tyrosine Kinases ; antagonists & inhibitors

Objective:To explore the effect of different head elevation angle on intracranial pressure and cerebral blood flow of patients with hypertensive cerebral hemorrhage in a resting state, to provide scientific basis for nursing development.Methods:A total of 72 hypertensive cerebral hemorrhage patients were selected as research subject, at the resting state, head elevation was raised up with 0°, 5°, 10°, 15°, 20°, 25°, 30° in the supine position with 5 minutes interval between different positions. The levels of intracranial pressure, cerebral perfusion pressure, regional oxygen saturation, blood pressure, heart rate, pulse oxygen saturation were recorded.Results:With head elevation from 0° to 5°, 10°, 15°, 20°, 25°, 30°, the levels of intracranial pressure were (12.39±3.32), (10.64±3.19), (9.84±2.58), (9.09±1.76), (8.33±2.51), (7.13±1.81), (6.81±1.67) mmHg(1 mmHg=0.133 kPa); mean arterial pressure were (106.06±10.17), (104.45±10.77), (105.87±6.73), (106.82±10.36), (105.78±10.27), (106.77±6.15), (100.30±10.92) mmHg; cerebral perfusion pressure were (93.67±10.36), (93.82±10.81), (96.03±7.26), (97.73±10.63), (97.45±10.38), (99.65±6.62), (93.49±10.99) mmHg; regional oxygen saturation were (65.91±6.70)%, (66.89±6.52)%, (67.12±8.04)%, (69.33±13.26)%, (69.31±8.47)%, (68.94±9.82)%, (66.12±6.78)%. Intracranial pressure was increased gradually with head elevation from 0° to 5°, 10°, 15°, 20°, 25°, 30°, the difference was statistically significant ( F value was 45.380, P<0.01). Mean arterial pressure was significantly decreased at 30° head elevation compared to the 0°, 5°, 10°, 15°, 20°, 25° head elevation ( t values were 2.331-2.997, P<0.05). Cerebral perfusion pressure and regional oxygen saturation showed an increased trend, however, those index was decreased at 30° head elevation, the levels of cerebral perfusion pressure and regional oxygen saturation was significantly increased at 15°, 20°, 25° head elevation compared to the 0° and 30° head elevation ( t values were 2.554-3.331 and 2.378-3.091, P<0.05). However, there was no significant difference between 0°, 5°, 10°, 15°, 20°, 25°, 30° head elevation in systolic pressure, diastolic pressure, heart rate, pulse oxygen saturation ( P>0.05). Conclusions:15°-25° head elevation is a relatively appropriate position in patients with hypertensive cerebral hemorrhage.