Aim To investigate the possible mechanism of antitumor in human lung cancer cell lines A549 and NCI-H460 induced by lumiracoxib.Methods The expression of COX-2 was detected by Western blot and the levels of PGE2 and cAMP was determined by radioimmunoassay (RIA).Results COX-2 protein was highly expressed in A549 and NCI-H460 cells.After treatment with 15~240 ?mol?L-1 LUM for 24 hrs,LUM significantly decreased the level of COX-2 in A549 cells,but not in NCI-H460 cells.Compared with the control,the PGE2 production was reduced and the level of cAMP was increased after the treatment with 15,30,60,120,240 ?mol?L-1 of LUM,respectively.Conclusion The effect of Lumiracoxib on antitumor is in COX-2-dependent or-independent manner. The antitumor effect of LUM may be related to inhibiting the COX-2 activities by decreasing its secretion,up-regulating the level of cAMP,and down-regulating the level of PGE2.

Objective To investigate the effects of phosphocreatine postconditioning on cerebral ischemia-reperfusion(IR)injury in rats.Methods Thirty-six SD rats were randomly divided into three groups:groups Sham,IR (treated with normal saline)and PCr.IR was induced by intraluminal middle cerebral artery occlusion (MCAO).All treatments were given intravenously at the begining of reperfusion.Twenty-four hours after the reperfusion, neurological deficit score and magnetic resonance scan were performed.serum concentrations of malonaldehyde and 4-hydroxynonenal,cere-bral infarct volume and destruction of cerebral cortex were estimated.Neuronal apoptosis was further assessed by immunohistochemistry and immunofluorescent staining of caspase-3 and NeuN. Results Compared with group IR,phosphocreatine significantly decreased neurological deficit score, infarct volume,malonaldehyde and 4-hydroxynonenal levels(P < 0.05 ).Cortex structure was more complete,as well as neuronal apoptotic index was smaller in group PCr (P <0.05).Conclusion PCr can reduce cerebral infarct volume,thereby promote neurofunctional recovery.The mechanism of Pcr is related to reduced oxidative stress and inhibitted apopotosis during IR.

AIM To determine the concentration of paeonol in the bulk drug and injection, a method of reversed-phase high performance liquid chromatography (RP-HPLC) was developed. METHODS Lichrospher C_ 18 column(4.6 mm?250 mm, 5 ?m)was used with methanol-acetonitrile-water(30∶40∶30)as mobile phase at a flow rate of 0.8 ml?min -1 . 20 ?l of sample was injected into the C_ 18 column where the temperature was 25℃. The detection wavelength was 274 nm. RESULTS The linear regression equation for paeonol was = 3 772.525 8 X- 0.747 4 (r = 1.000 0, n =5) under the linearity range from 0.02 mg?L -1 to 25.60 mg?L -1 . The average recovery was 99.87%. The relative standard deviations of the intra-day and inter-day were less than 4%. CONCLUSION The method is simple and rapid, which may be used for the determination of paeonol and its preparation for different purpose.

Aim To investigate the protective effects of MANF on human neuroblastoma SH-SY5 Y cells suf-fering from oxygen-glucose deprivation/reperfusion ( OGD/R) and the underlying mechanism. Methods SH-SY5Y cells were treated with OGD for 6 h, fol-lowed by reperfusion for 12 h. Meanwhile, the cells were incubated with 2 μmol · L-1 recombinant human protein MANF for 12 h during reperfusion. The cell morphology was observed under an optical microscope. The cell viability was determined by MTT assay. PI
staining was performed to detect the number of dead cells. Western blot was performed to determine the protein levels of endogenous MANF, glucose-related protein 78 ( GRP78/BiP) , phosphorylated inositol re-quiring enzyme 1 ( p-IRE1 ) , phosphorylated eukaryot-ic translation initiator factor 2α ( p-eIF2α) , cleaved caspase-3, and C/EBP-homologous protein (CHOP). Results The cells exposed to OGD/R became smaller and round, and the neurites of the cells were shortened or disappeared . Recombinant human protein MANF
improved the survival rate ( P <0. 05 ) and decreased the death rate ( P <0. 05 ) of SH-SY5 Y cells treated with by OGD/R. Western blot assay showed that the endoplasmic reticulum ( ER) stress-associated proteins GRP78/BiP, p-IRE1, p-eIF2α, and MANF were in-creased significantly after OGD/R treatment, compared with the untreated controls. However, the increases of secretion levels of apoptosis-associated proteins CHOP
and cleaved caspase-3 in SH-SY5 Y cells induced by OGD/R were significantly suppressed by MANF. Con-clusion OGD/R up-regulates the ER stress-associated proteins and causes apoptosis. MANF inhibits OGD/R-induced cell death, which may be related to attenua-ting ER stress-induced apoptosis.

AIM: To investigate the changes of bcl-2, bax expression and neuron apoptosis of cerebral cortex in lymphostatic encephalopathy of rats. METHODS: The model of lymphostatic encephalopathy was established by occluding and removing both the shallow and deep cervical lymph nodes in rats. The animals were sacrificed at 1, 2, 3, 5, 7 and 14 days after operation. HE staining was used to observe the structure of brain tissues and TUNEL staining was used to detect in situ cell apoptosis. The expressions of bcl-2 and bax were examined by RT-PCR. RESULTS: Cerebroedema appeared at the second day and was the most serious at the 5th day after blockage of cervical lymphatics. The number of TUNEL positive cells and the expression of bax began to increase at the 2nd day, reached a peak at the 5th day and dropped to control level at the 14th day. The expression of bcl-2 began to increase at the 1st day, reached a peak at the 5th day and dropped to control level at the 7th day. The increasing extent of bax was higher than that of bcl-2. CONCLUSION: The blockage of cervical lymphatics can lead to lymp[JP2]hostatic encephalopathy. Apoptosis is the main form of neuron death in the cortex and has relation to the increasing expression of bcl-2 and bax. [JP]

AIM To study immunomodulation and antitumor activity of paeonol. METHODS Paeonol was administered singlely to HepA bearing mice. 14 d later, the inhibition of tumor weight were observed. IL-2 and TNF-? content in serum, IL-2 secretion by splencytes, TNF-? production by PM? were measured by RIA. RESULTS Paeonol possess markedly inhibitory activity on the growth of HepA tumor in mice, and IL-2 and TNF-? were induced signficantly. CONCLUSION Paeonol has the effects of antitumor. This effect may be derived from inducing IL-2 and TNF-? production.

AIM To investigate the effect of paeonol on proliferation and apoptosis of K 562. METHODS The inhibitory effect of paeonol on K 562 cells proliferation was assayed by MTT dye reduction. HE staining were used to observe the morphology of apoptotic cells, and Flow cytometric analysis were also used to analyze the K 562 apoptosis. RESULTS Pae at the concentration of 7.81～250 mg?L -1 significantly inhibited proliferation of K 562 cells in dose-dependent manner. Typical apoptotic changes were observed in K 562 cells under the light microscope. By FCM methods, the apoptotic rates of K 562 cells were increased from 10.01% to 34.16% after treatment of Pae at concentrations from 7.81 to 125 mg?L -1 for 24 h, which showed obvious concentration-effect relationship. The apoptotic rates of K 562 cells were also increased when Pae (6.25, 25 and 100 mg?L -1) was treated for 6, 12 and 24 h, which showed obvious time-effect relationship. CONCLUSION Paeonol may inhibit K 562 cell proliferation and induce its apoptosis.

Objective To study the anatomic data of the first metatarsal dorsal artery and to provide anatomical basis for clinical tissue transplantation based on the first metatarsal dorsal artery.Methods The 16 adult cadaver specimens with 32 feet were dissected and meas-ured by vernier caliper.Then the anatomic data of the first metatarsal dorsal artery were analyzed.Results Through the examinations of 32 feet sample,the first metatarsal dorsal artery were classified into 5 types.Type Ⅰ:the first metatarsal dorsal artery runs at the surface of the first dorsal interosseous muscle (13 sides,40.6%).Type Ⅱ:the first metatarsal dorsal artery runs in the interior of the first dorsal interosse-ous muscle (11sides,34.4%).Type Ⅲ:the first metatarsal dorsal artery runs underneath the first dorsal interosseous muscle (6 sides, 18.8%).Type Ⅳ:the first metatarsal dorsal artery is slender (1 side,3.1%).TypeⅤ:the first metatarsal dorsal artery is absent (1 side, 3.1%).Distance relationship was measured between the first metatarsal bone and the first metatarsal dorsal artery:the vertical distance be-tween the origin of the posterior branch of the first metatarsal dorsal artery and base of the first metatarsal bone was (2.4 ±0.3)mm,the ver-tical distance between the origin of the posterior branch of the first metatarsal dorsal artery and head of the first metatarsal bone was (10.1 ±1.0)mm;the vertical distance between the origin of the anterior branch of the first metatarsal dorsal artery and the first metatarso-phalangeal joint was (7.6 ±2.7)mm.Conclusion The first metatarsal dorsal artery has clinical reference significance for the hands and feet’s trauma and skin flap transplantation such as thumb reconstruction.

Objective:To investigate imaging characteristics of papulopustular rosacea (PPR) by high-frequency ultrasound combined with color Doppler flow imaging.Methods:From August 2021 to August 2022, 30 patients with PPR were enrolled from the Department of Dermatology, the First Affiliated Hospital of Baotou Medical College in the Inner Mongolia Autonomous Region, and 30 healthy volunteers served as controls. The 22-MHz high-frequency ultrasound combined with color Doppler blood flow imaging was performed to measure the skin thickness, echo and blood flow parameters at the cheek, and the ultrasound results were compared between the two groups. Comparisons between groups were conducted by using t test or chi-square test. The diagnostic value was analyzed using the area under the curve (AUC) in the receiver operating characteristic (ROC) curve. Results:In the case group, there were 12 males and 18 females, and their ages ranged from 22 to 65 years (42.3 ± 12.8 years) ; in the control group, there were 10 males and 20 females, and their ages ranged from 24 to 62 years (41.0 ± 8.4 years) . The epidermal and dermal thicknesses at the cheek were significantly higher in the case group (132.64 ± 12.29 μm, 1 812.29 ± 85.52 μm, respectively) than in the control group (104.34 ± 14.45 μm, 1 671.77 ± 146.55 μm, respectively, both P < 0.05) . High-frequency ultrasound images showed that the case group was mainly characterized by irregular hypoechoic areas in the cheek dermis (80%) , while banded moderately echoic areas were common in the cheek dermis in the control group (90%) ; subepidermal low-echogenic bands and dermal irregular hypoechoic areas were more likely to appear in the case group than in the control group (93.33% vs. 43.33%, 80% vs. 10%, respectively, both P < 0.001) . Compared with the control group, the case group showed a significantly increased proportion of patients with abundant blood flow signals (93.3% vs. 10%, P < 0.05) , and significantly increased blood vessel diameters (1.60 ± 0.42 mm vs. 0.95 ± 0.32 mm, P < 0.05) ; there was no significant difference in peak systolic blood flow velocity and vascular resistance index between the two groups (both P > 0.05) . The AUC of high-frequency ultrasound combined with color Doppler flow imaging quantitative parameters (including epidermal thicknesses, dermal thicknesses, and blood vessel diameters) was 0.989 (95% CI: 0.970 - 1.000) for the diagnosis of PPR, and the sensitivity and specificity were both 96.7%, which were higher than those of single parameter-based diagnostic model. Conclusion:High-frequency ultrasound combined with color Doppler flow imaging can help improve the accuracy of the diagnosis of PPR, by accurately and non-invasively measuring skin thickness and blood flow parameters.

OBJECTIVETo observe the effects of increased-intensity conditioning regimen with FBCA (Fludarabine, Busulfan, Cyclophosphamide, and Antithymocyte globulin) for allogeneic hematopoietic stem cell transplantation (allo-HSCT) in acquired severe aplastic anemia (SAA).

METHODSFrom January 2000 to June 2011, twenty-two patients (male 12, female 10) with SAA underwent allo-HSCT with FBCA conditioning regimen which consisted of fludarabine (30 mg·m⁻²·d⁻¹×5 d), busulfan (3 mg/kg×2 d), cyclophosphamide (60 mg·kg⁻¹·d⁻¹×2 d) and ATG (2.5 mg·kg⁻¹·d⁻¹×5 d). GVHD prophylaxis was performed by cyclosporine and short-term course methotrexate. Nine patients received mobilized peripheral blood stem cells transplantation and 13 patients underwent mobilized peripheral blood combined with bone marrow stem cells. Fourteen cases were human leukocyte antigen (HLA)-matched related donors, while the other 8 cases were HLA-haploidentical transplantation. Engraftment was documented by short tandem repeats with polymerase chain reaction (STR-PCR) on approximately day + 30, + 90, + 180, + 1 year and + 2 year, respectively. Long-term survival and transplantation-related complications were analyzed.

RESULTSAll patients obtained prompt and sustained hematopoietic reconstitution. Median time for neutrophil and PLT engraftment was 15 (range: 11-22) days and 16 (range: 12-27) days, respectively. All patients were full donor chimerism identified by STR-PCR. 2 of the total 22 cases (9.1%) had grade I-III acute GVHD and 3 (15.8%) was chronic GVHD. Three patients (13.6%) died of transplantation related mortality and the other 19 cases were disease-free survival with a median time of 24 (range: 0.5-140.5) months. The causes of death were cytomegalovirus pneumonia (n=1), acute GVHD (n=1) and severe pulmonary infection (n=1).

CONCLUSIONIncreased-intensity of FBCA conditioning regimen could favor donor stem cell sustained engraftment for allo-HSCT in SAA.

Adolescent ; Adult ; Anemia, Aplastic ; therapy ; Child ; Child, Preschool ; Female ; Graft Survival ; Hematopoietic Stem Cell Transplantation ; methods ; Humans ; Male ; Middle Aged ; Tissue Donors ; Transplantation Conditioning ; methods ; Transplantation, Homologous ; Vidarabine ; analogs & derivatives ; Young Adult