Endotoxin induces the apoptosis ofdegenerated human intervertebral disc nucleus pulposus cells / 基础医学与临床

Objective To find the relationship between nuclear factor kappB (NF-κB) activation and cell apoptosis.Methods Degenerative human nucleus pulposus cells were cultured in vitro.Useing CCK-8 to observe the proliferative effect of LPS on the nucleus pulposus cells in vitro, in the concentration of 100, 200, 500 and 1 000 μg/mL and choose the most apropriate concentration.The experiment was divided into blank control group, LPS(500 μg/mL)groups, and NF-κB inhibitor(BAY11-7082)plus LPS(500 μg/mL)group,Annexin V-FITC/PI flow cytometry and Hoechest33258 staining was used to analyze apoptosis.The expression of cleaved caspase-3,PARP,P65,P-P65 proteins were detected by Western blot respectively.Results When LPS was 500 μg/mL, the cell vitality was obviously declined.Compared with the blank control group, cell apoptosis rate of the LPS group is increasing (P<0.05), and the expression of P-P65,cleaved caspase-3, cleaved PARP were alsohigher (P< 0.05).Compared with the LPS group, cell apoptosis rate of the NF-κB inhibitor plus LPS group is significantly lower (P<0.05) and the expression of P-P65,cleaved caspase-3,cleaved PARP were also lower (P< 0.05).Conclusions NF-κB signaling pathway may be associated with the nucleus pulposus cell apoptosis in disc degeneration.

NF-κB inhibitor reduces the expression of zincfinger protein A20 in rabbit lumbar intervertebral disc nucleus pulposuscells induced by lipopolysaccharide / 基础医学与临床

Objective To observe the expression of zinc finger protein A20(A20), NF-κB and related inflammatory factors before and after lipopolysaccharide (LPS) stimulates degeneration of rabbit intervertebral disc nucleus pulposus cells.Methods The normal and degenerative nucleus pulposus cells were isolated and cultured, then divided into normal group,degenerative group,LPS stimulation group and NF-κB inhibition group.HE staining observe the morphological changes of nucleus pulposus and annulus fibrosus,immunohistochemistry was used to detect the expression of A20,NF-κB/p65 and COL-Ⅱ.Real-time PCR was employed to analyze the expression of A20,IL-1β,TNF-α,NF-κB and COL-Ⅱ,Western blot was used to observe the A20 protein,p65 and COL-Ⅱexpression in the four groups, and TNF-α, IL-1β in cell supernatant was determined by ELISA.Results The number of nucleuspulposus cells significantly decreased, aggregation occured in the degenerative group.COL-Ⅱ was obvious lower and A20, p65 significantly higher than that in normal group by immunohistochemical staining.Compared with the normal group,A20,TNF-α,IL-1β,p65 expression was significantly increased and COL-Ⅱ decreased in the mRNA and protein levels in degenerative group.Above indexes changed more significant in LPS stimulation group than in degenerative group.The expression of A20, TNF-α, IL-1β, p65 in the NF-κB inhibitor group was lower than that in the LPS group, and the expression of type Ⅱ collagen increased(P<0.05).Conclusions Intervertebral disc inflammatory response is closely related to the development of intervertebral disc degeneration, A20 may play an important role.

Clinical effect of interventional embolization for patients with ruptured anterior communicating artery aneurysm and their cognitive function / 局解手术学杂志

Objective To investigate the effect of interventional embolization on the clinical outcome and cognitive function of patients with anterior communicating artery aneurysm rupture .Methods The data of 120 patients with anterior communicating artery aneurysm rup-ture in our hospital from January 2016 to January 2017 were retrospectively analyzed ,in which 71 cases were treated by the spring coil emboli-zation,21 cases received balloon-assisted coiling,23 cases received stent-assisted coil embolization .At the same time,50 healthy people were collected as control group .The preoperative , postoperative cognitive function and the clinical effect of the patients were evaluated .Results Coil embolization group completed embolism in 29 cases,40 cases of most embolism ,2 cases of partial embolization;balloon-assisted coiling group completed embolism in 16 cases,4 cases of most embolism ,1 cases of partial embolization;17 cases of stent assisted coil embolization group completed embolism ,3 cases of most embolism ,3 cases of partial embolism .There was statistically significant difference in embolization rate of coil embolization group(χ2 =6.8862,P=0.0320),balloon-assisted coiling group(χ2 =15.900,P=0.0004) and stent assisted coil embolization group(χ2 =7.280,P=0.0262).After the treatment,the difference in cognitive function of coil embolization group (24.0 ± 0.2) and balloon-assisted coiling group(24.3 ±0.2) was statistically significant (t=86.0386,P=0.0000);the difference between coil embolization group(24.0 ±0.2) and balloon-assisted coiling group(24.3 ±0.2) was statistically significant(t=46.3848,P=0.0000);the difference between balloon-assisted coiling group(24.3 ±0.2) and stent assisted coil embolization group (21.5 ±0.2) points was statisti-cally significant(t=52.1002,P=0.0000).Conclusion Different interventional embolization techniques can improve the cognitive func-tion of patients with ruptured anterior communicating artery aneurysm ,which has more obviously effect on the cognitive function of patients with stent assisted coil embolization .

Direct measurement of blood nickel using compound matrix modifier-graphite furnace atomic absorption spectrometry / 中国职业医学

OBJECTIVE: To establish a methodology to dilute blood sample with compound matrix modifier,and to determine the blood level of nickel using improved graphite furnace atomic absorption spectrometry( GFAAS). METHODS: The blood samples( 100. 00 μL) were diluted 5 times in 0. 12 g / L mass concentration of palladium chloride combined with 1. 00 %(V /V) Triton X-100 and 0. 10%(V /V) nitric acid,and the blood level of nickel was detected by GFAAS. RESULTS: The good linearity range of nickel mass concentration in blood was 0. 30-25. 00 μg / L,the correlation coefficient was 0. 999 7,the detection limit was 0. 30 μg / L,the minimum detectable mass concentration was 1. 50 μg / L,the recovery rate was99. 00 %-102. 75 %. The within-run and between-run relative standard deviations were 1. 43 %-3. 70 % and 2. 20 %-5. 03 %,respectively. Blood samples can be stored for at least 7 days at 4 ℃. CONCLUSION: This method is simple for operation,with high accuracy and precision,which is suitable for determination of nickel in blood in normal individuals and workers with occupational exposed to nickel.

In Vivo and In Vitro Inhibitory Effects of Icariin on Angiogenesis / 中国医学科学院学报

<p><b>OBJECTIVE</b>To investigate the inhibitory effects of icariin(ICA),an active ingredient of Herb Epimedii,on angiogenesis.</p><p><b>METHODS</b>The chick chorioallantoic membrane(CAM)assay was adopted to evaluate the effects of various doses of the ICA on the angiogenesis. The cell growth inhibitory effect of ICA on human umbilical vein endothelial cells(HUVEC)was measured by MTT assay. Cell cycle arrest and the induction of apoptosis were evaluated by flow cytometry. The effect of ICA on the migration of HUVEC cells was measured on Transwell model.</p><p><b>RESULTS</b>ICA remarkably inhibited angiogenesis in CAM in a concentration-dependent manner. The proliferation of HUVEC cells was inhibited by ICA, and the effect was time-and concentration-dependent. ICA-treated HUVEC cells showed cell cycle arrest;180 μg/ml of ICA decreased the percentage of migrating HUVEC cells by 78.0%.</p><p><b>CONCLUSION</b>ICA can effectively suppress angiogenesis;however,its in vivo inhibitory effect on angiogenesis warrants further investigations.</p>

Infect of pingshen decoction on serum HGF, Cys C and TGF-beta1 diabetic nephropathy in early stage / 中国中药杂志

Study the serum level of HGF, Cys C and TGF-beta1 in type 2 diabetic nephropathy (DN), the infect of Pingshen decoction on those index. Selected 69 cases of 2 type DN and randomly divided into therapy group (36 cases) and control group (33 cases). The therapy group were treated with Pingshen decoction 1 dose/d, bid po. The control group were treated with NephritisShu tablet, 6 tablet, tid po. 8 weeks was a course. Before and after treatment, we examine the serum level of HGF, Cys C and TGF-beta1 by ELISA and immunonephelometry, and compare with 30 cases of healthy control group. The study demonstrates that before treatment, the serum level of HGF in both groups were significantly lower than healthy control group (P < 0.01), but Cys C, TGF-beta1 were significantly higher (P < 0.01). After treatment, the serum level of HGF of both groups were increased. The serum level of HGF of therapy group were significantly higher than of control group (P < 0.01), but the serum level of Cys C and TGF-beta1 were significantly lower than control group (P < 0.01). The serum level of HGF was correlated negatively with Cys C,TGF-beta1. In control group, the UAER, urine beta2-MG and quantity of 24-hour urine protein were significantly decreased after treatment (P < 0.01). The index of urine of therapy group were significantly lower than control group (P < 0.01). Results indicate that test of serum level of HGF and Cys C,TGF-beta1 of diabetic nephropathy have important clinical significance. Pingshen decoction can effectively intervene in the serum level of HGF and Cys C, TGF-beta1 and index of urine.

Effect of Ginkgo leaf extract on vascular endothelial function in patients with early stage diabetic nephropathy / 中国结合医学杂志

<p><b>OBJECTIVE</b>To explore the effect of ginkgo leaf extract (GLE) on vascular endothelial function (VEF) in patients with early stage diabetic nephropathy (DN).</p><p><b>METHODS</b>Sixty-four patients were randomized equally by a randomzing digital table into two groups, the treated group and the control group. They were all treated for 8 weeks with conventional therapy for diabetes, but GLE tablets were given to the treated group additionally. Changes in VEF were estimated before and after treatment by ultrasonic examination of the brachial artery. In the meantime, changes in plasma levels of the von Willebrand factor (vWF), nitric oxide (NO) and endothelin-1 (ET-1) were observed as well.</p><p><b>RESULTS</b>The brachial arterial endothelium dependent dilating function in the treated group increased from 4.91+/-2.31% before treatment to 6.78+/-3.89% after treatment (P<0.05), while the level of vWF decreased from 182.05+/-64.13% to 128.56+/-48.98%, and that of NO increased from 50.16+/-24.64 micromol/L to 70.65+/-28.71 micromol/L (P<0.01). However, these indexes were not significantly changed in the control group after treatment (P>0.05).</p><p><b>CONCLUSION</b>GLE could decrease the plasma level of vWF, raise the plasma NO level and improve the endothelium dependent vascular dilating function in DN patients.</p>

Effect of the all trans retinoic acid and Ara-c on the telomerase activity of HL-60 cells / 中国临床药理学与治疗学

Aim To investigate the possible mechanism of human promyelocytic leukemia cells differentiation and apoptosis induced by all trans_retinoic acid (ATRA) and Ara_c. Methods The effects of ATRA and Ara_c on the tolomerase activity of HL_60 cells were detected by PCR_ELISA. Results The tolomerase activity of HL_60 cells declined during the course of differentiation and apoptosis induced by ATRA and Ara_c. Conclusion These findings suggest that ATRA and Ara_c can inhibit tolomerase activity of HL_60 cells. It may be one of the important mechanisms of human promyelocytic leukemia cells differentiation and apoptosis induced by ATRA and Ara_c.

Effects of different extracts from Hippocampus japonicus on kidney-yang deficiency mice induced by extradiol / 中草药

Objective To observe effects of four extracts (water, n-butanol, acetoacetate and petro-leum benzine extracts) from Hippocampus japonicus on kidney-yang deficiency mice induced by extradiol, and reveal the modern scientific connotation about sweet-flavor, warm-nature, meridian tropism in liver and kidney. Methods Kidney-yang deficiency mice was induced by intraperitoneal injection of estradiol benzoate. Effects of four extracts from H. japonicus were observed by measuring physical signs, rectal temperature, grip strength, swimming time, autonomic mobility, creatinine (Cr) and urea (UR) level in serum, haematological indexes, testis index and seminal vesicle index. Results All the four extracts from H. japonicus could markedly improve physical signs and increase seminal vesicle index, RBC, Hb and PLT in blood, and decrease UR level in serum of kidney-yang deficiency mice, water extract and petoleum benzine extract could increase rectal temperature, grip strength, swimming time, autonomic mobility, testis index, WBC, lymphocyte (LY), monocyte (MO), and neutrophilic granulocyte (NE), n-butanol extract could increase autonomic mobility and NE, acetoacetate extract could enhance grip strength and prolong swimming time. Conclusion All above effects of extracts from H. japonicus could be as the basic of improving kidney-yang deficiency, could be an important part of the modern scientific connotation about sweet-flavor, warm-nature, meridian tropism in liver and kidney. Effects of water extract and petroleum ether extract were closer and stronger, which offer enlightenment for searching the common effective substance groups of H. japoniacs.

A dopamine receptor antagonist modulates or enhances the analgesia of morphine and analysis of their synergetic analgesic mechanism / 中国病理生理杂志

AIM: To observe the synergetic analgesic effects of low dose of haloperidol, a dopamine antagonist and under-threshold dose of morphine on mice induced by thermal and acetic acid, and to analyze the major mechanism of their synergetic actions. METHODS: To examine the analgesic synergetic effect of haloperidol (0.315 mg/kg, 0.625 mg/kg, 1.25 mg/kg, ip respectively), morphine (3.125 mg/kg, 6.25 mg/kg, 12.5 mg/kg ip, respectively) or combining effect of haloperidol (0.3125 mg/kg) with morphine (3.125 mg/kg) on mice, we compared the change of pain threshold stimulated by thermal, latent period of twisting, the number of times of twisting by acetic acid, and we also estimated the antagonistic effect of d -amphetamine (10 mg/kg) and naloxone (5 mg/kg) on haloperidol and morphine group. RESULTS: Combination of haloperidol with morphine significantly enhanced pain threshold of mice induced by thermal, prolonged latent period of twisting and decreased the number of times of twisting. Naloxone markedly antagonized the combination of analgesic action of haloperidol and morphine and not d -amphetamine. CONCLUSION: Combination of haloperidol with morphine have synergetic analgesic effect and morphine is the dominant factor.

The anti-tumor molecular mechanisms of non-steroid anti-inflammatory drugs / 中国药理学通报

This review introduced the anti-tumor effects of non-steroid anti-inflammatory drugs (NSAIDs) and summarized their possible molecular mechanisms according to recent abroad literatures and our research results. Some evidence showed that the anti-tumor mechanisms of NSAIDs were different in various tumors.NSAIDs decreased the biosynthesis of PGE_2 and regulated the expressions of downstream correlated genes and proteins through restraining abnormal expression of COX-2 in certain neoplasms,which resulted in the inhibition of tumor angiogenesis and proliferation as well as induced apoptosis. But in other cancer cells, NSAIDs, as activators of peroxisome proliferator-activated receptor ? (PPAR?), induced COX-2 expression, promoted the biosynthesis of cyclopentenone prostaglandins (cyPGs). cyPGs further induced tumor cell apoptosis with PPAR? dependently or PPAR? independently. Since their special mechanisms of anti-proliferation and pro-apoptosis, NSAIDs revealed significant synergistic effects with other anti-tumor treatments.