Objective To evaluate the clinical and pathological features of drug-associated acute interstitial nephritis. Methods Clinical presentations and pathological features were investigated in 14 patients with drug-associated acute interstitial nephritis. Lymphocyt; stimulation test was performed to confirm, the offending drugs. Results All patients presented with acute renal failure, but typical clinical features were often absent. Renal biopsy was therefore needed to establish the diagnosis. Conclusion Lymphocyte stimulation test is a very useful means in the determination of offending drugs.

Objective Research the correlation between expression of MMP-2 in colorectal cancer and patho- logical factors,or biological behaviors in colorectal cancer.Methods The expression of MMP-2 in 68 cases with col- orectal cancer were detected by immunohistochemical staining.Results The expression of MMP-2 in colorectal can- cer was not correlated with tumor region and histologic type,but related with depth of tumor invasion and metasta- sis.The frequency of positive cases in patients with colorectal cancer with of lymph,node metastasis was significantly higher than that in patients without lymph node metastasis(P

BACKGROUND: Bone marrow mesenchymal stem cells (BMSCs) are conveniently cultured and separated in vitro because theirimmunogenicity is low. Therefore, BMSCs are suitable for cell transplantation. Research has shown that BMSCs are potential to repair neurological defect. OBJECTIVE: To determine whether in vitro cultured BMSCs can be transplanted to repair peripheral nerve injury or not, and to investigate its mechanisms. DESIGN, TIME AND SETTING: Randomized controlled animal study This study was performed in Department of Toxicology, Public Health College of Jilin University from March 2006 to March 2007.MATERIALS: Fifty healthy female Wistar rats aging 2 months and six 1-week-old female Wistar rats were used for extraction of BMSCs. Rabbit-anti-nerve growth factor (NGF) monoclonal antibody was provided by Santa Cruz Company. METHODS:BMSCs were separated and cultured with adherent method. In the 3rd generation, BMSCs were preiabeled with bromodeoxyuridine (BrdU) 48 hours before transplantation. Fifty healthy Wistar rats were selected to prepare sciatic nerve crush injury models with clamping method.Subsequently, rats were randomly divided into transplantation group and control group, with 25 rats in each group. Rats in the transplantation group underwent transplantation of BrdU-labeied BMSCs at nerve injured sites; while, the same volume DMEM was injected into rats in the control group. MAIN OUTCOME MEASURES: Injured nerve in the transplantation group suffered from anti-BrdU staining 1, 2, 4, and 6 weeks after surgery. Distal injured nerve in both groups suffered from NGF immunohistochemical staining 1, 2, 4, and 6 weeks after surgery. Image analysis system was adopted to analyze integrated absorbance of positive expression. Gait analysis was performed every week after surgery to measure sciatic nerve function index, and it was also adopted to measure regenerated nerve conduction velocity 6 weeks after surgery. Subsequently, amount and inner diameter of medullated nerve fibers were calculated after luxol fast blue staining, while wet weight of experimental-lateral gastrocnemius muscle and cross section area of muscle fiber were measured at the same time. RESULTS: Fifty rats were included in the final analysis. BrdU-labeled positive cells could be found at injured nerve in the transplantation group 1, 2, and 4 weeks after surgery. Integrated absorbance of NGF protein expression in the transplantation group was significantly higher than that in the control group 1 and 2 weeks after surgery (P < 0.01), but there were no significant differences between the two groups 4 and 6 weeks after surgery (P > 0.05). Sciatic nerve function index in the transplantation group superiorly recovered to that in the control group 3-6 weeks after surgery. Furthermore, 6 weeks after surgery, nerve conduction velocity, amount and diameter of medullated nerve fibers, wet weight and cross section area of gastrocnemius muscle in the transplantation group were significantly higher than those in the control group (P < 0.05-0.01). CONCLUSION: BMSCs can be transplantated into injuried nerve tissue, and promote the recovery of nerve function in the micro-enviroment, improve NGF expression in an early phase may be one of its mechanisms.

Objective To explore the early diagnosis and treatment of acute superior mesenteric arterial embolism (ASMAE).Methods The clinical data of 25 patients with acute superior mesenteric arterial embolism were retrospectively analyed.Results All 25(100%) patients had severe abdominal pain with abdominal signs,21(84%) patients had history of valvular heart disease or atrial fibrillation,and 17(68%) patients had hematochezia.All the cases were misdiagnosed preoperatively,including 11 patients were misdiagnosed as abdominal pain of unknown causes,3 patients as acute pancreatitis,3 patients as acute gastroenteritis,2 patients as necrotizing enteritis.1 patient as acute appenditis,1 patient as acute myocardial infarction,and 1 patient as acute cholecystitis;but 3 patients were preoperatively suspected to have impairment of mesenteric blood flow.All of the 25 patients underwent necrotic bowel resection,6 patients died,and 7 patients abandoned treatment because of serious complications such as short bowel syndrome etc.Mortality rate was 51%(13/25).Conclusions Early diagnosis of patients with acute superior mesenteric arterial embolism is difficult;the main cause of misdiagnosis is lack of recognition of its clinical signs.Fully grasping the characteristics of patients with early stage disease and effective early intervention are the fundamental measures for reducing mortality.

ObjectiveTo investigate the characteristics of attentional blink (AB) in the patients with depression.MethodsThirty-five antidepressant-free, non-elderly patients with depression diagnosed according to CCMD-Ⅲ as well as thirty-five health control subjects matched for education, age and sex were tested with the rapid serial visual presentation (RSVP) paradigm.ResultsAll cases of two groups showed an AB, and AB for depressive participants was larger and longer.ConclusionThe patients with depression have attentional impairments.

ObjectiveTo investigate whether subjects with major depression display attention deficits.Methods35 antidepressant-free,non-elderly patients with unipolar depression diagnosis according to ICD-10 and CCMD-Ⅲ as well as 35 health control subjects matched for education,age and sex were administered three tests for attention(sustained attention,Selective attention and Attention Blink).ResultsOn the Continuous Performance Test(CPT),depressed participants needed more reaction time and made more mistake than nondepressed participants.There were no differences between two block in reaction time in the CPT of patients and control subjects.The performance on the Stroop Color-Word Test was impaired in depression.Compared with normal subjects,depressed participants presented increased choice reaction times(CRT).Stroop interference was higher in depressed patients than in controls.On Attention Blink(AB) paradigm,both groups performed equally well at reporting the first target appearing in a rapidly presented stream of stimuli.All groups showed an AB,and AB for depressive participants were larger and longer.Correlations were observed between the HAMD score and the reaction time in CPT.ConclusionThe depressive participants showed a decrement tendency in vigilance,a higher Stroop interference and a larger and longer AB.

One new neolignan identified as 2, 3-( trans) -dihydro-2-(4-hydroxy-3-methoxyphenyl) -3-[(beta-D-glucopyranosyloxy) methyl]-7-methoxybenzofuran-5-propenoic acid (1) and five known steroidal glycosides namely torvoside A(2), torvoside C(3), torvoside H(4), solanolactoside A (5), (25S)-6alpha-hydroxy-5alpha-spirostan-3-one-6-0-[alpha-L-rhamnopyranosyl-(1-->3-beta3)-beta-D-D-quinovopyr-anoside] (6) were isolated from the fruits of Solanum torvum. Their structures were elucidated on the basis of 1D, 2D NMR and MS spectroscopic analysis.
Fruit ; chemistry ; Isomerism ; Lignans ; chemistry ; isolation & purification ; Solanum ; chemistry

Objective To study the antidepression action of curcumin and to explore its mechanism. Methods Mouse reserpine-induced depression model and mouse tetrabenazine-induced acquired despair model were used to observe the effect of curcumin on relieving depression. According to the hypothesis of monoamine, the effect of curcumin on activating monoamine, and inhibiting reuptake of monoamine neurotransmitters and monoamine oxidase inhibitor (MAOI) were observed. Results Curcumin in the dose of 50 mg/kg and more can relieve melancholic symptoms in mice induced by reserpine and tetrabenazine. Curcumin had no direct activation on monoamine either had no obvious inhibition on reuptake of monoamine neurotransmitters of noradrenalin, 5-hydroxytriptamine and dopamine . However, Curcumin had an obvious effect on improving rat forelimb spasm induced by tryptamine hydrochloride. Conclusion Curcumin acts like a kind of monoamine oxidase inhibitor, which exerts antidepression action by inhibiting monoamine oxidase activity and increasing the concentration of monoamine neurotransmitter in brain.

AIM: To evaluate the efficacy of combined therapy for amblyopia in children by making use of pattern visual evoked potential ( P-VEP) game.
METHODS: This was a prospective case control study. These asthenopic children were divided into two groups. The control group ( 66 eyes of 49 patients ): occlusive therapy with glasses, cover, precision work, red light treatment and so on, later the stereo vision training was added. The experimental group (72 eyes of 52 patients):conventional methods mentioned above with P - VEP games.
RESULTS: The total effective rate and cure rate of experimental group in 6mo were higher than those of control group. The overall effective rate was 94. 4% in the experimental group and 83. 3% in the control group. There was a statistically significant difference between them (P<0. 05).
CONCLUSION: The comprehensive therapy by making use of P-VEP game is an individualized effective new way in treating amblyopia.

ObjectiveTo observe the effect of progesterone on progesterone receptor in brain tissue with hypoxia-ischemia brain da-mage(HIBD) in neonatal rats,and discuss the protective mechanism of progesterone on HIBD of neonatal rats.MethodsTwenty-four 7-day-old neonatal rats were randomly divided into 3 groups:sham-operated group,hypoxia-ischemia group and pretreatment group.Rats in hypoxia-ischemia group and pretreatment group were subjected to left common carotid artery ligation,then were exposed to 80 mL/L oxygen and 920 mL/L nitrogen gas in 37 ℃ closed container for up to 2.5 h to establish hypoxia-ischemia encephalopathy(HIE) model.Progestero-ne was injected intraperitoneally into pretreatment group rats respectively at 30 minutes before hypoxia,solution was injected into the first 2 groups.All rats were killed at the 24 hour after operation,immunohistochemistry staining was used to examine the expression of progesterone receptor in brain.ResultsTotally 24 neonatal rats entered the result analysis without loss.Progesterone receptor was expressed in both endochylema and nucleus in every group rat.The amount of the positive cell of progesterone receptor in hypoxia-ischemia group significantly decreased compared with that in sham-operated group(P