Objective To study the pulmonary protective effect of large dose of ambroxol hydrochloride injection in postoperative patients with severe hypertensive intracerebral hemorrhage.Methods One hundred and sixty postoperative patients with hypertensive intracerebral hemorrhage were selected,and the patients were divided into conventional dose group and large dose group by random digits table method with 80 cases each.The therapeutic effect,partial pressure of oxygen,oxygenation index,acute physiology and chronic health evaluation Ⅱ score,antibiotic application time and hospitalization period in intensive care unit were compared between 2 groups.Results After treatment,the partial pressure of oxygen and oxygenation index in large dose group were significantly better than those in conventional dose group:(94.7 ± 7.2) mmHg (1 mmHg =0.133 kPa) vs.(86.5 ± 8.1) mmHg and (420.3 ± 35.5) mmHg vs.(356.0 ± 28.7) mmHg,the acute physiology and chronic health evaluation Ⅱ score was significantly lower than that in conventional dose group:(8.2 ± 3.4) scores vs.(11.6 ± 3.5) scores,the antibiotic application time and hospitalization period in intensive care unit were significantly shorter than those in conventional dose group:(8.5 ± 3.7) d vs.(13.4 ± 5.8) d and (7.3 ± 2.5) d vs.(9.7 ± 5.2) d,and there were statistical differences (P＜ 0.05).The total effective rate in large dose group was significantly higher than that in conventional dose group:92.5％ (74/80) vs.83.8％ (67/80),and there was statistical difference (P ＜ 0.05).Conclusion The pulmonary protective effect of large dose of ambroxol hydrochloride injection is significant in postoperative patients with hypertensive intracerebral hemorrhage.

AIM To investigate the effects of several 5-hydroxytryptamine(5-HT) subtype receptor antagonists on late slow excitatory postsynaptic potential(LS-EPSP) of the neurons of guinea pig inferior mesenteric ganglion(IMG). METHODS Intracellular recordings were made from neurons of the isolated guinea pig IMG. RESULTS Cyproheptadine and BRL 24924 suppressed LS-EPSP of 5-HT sensitive neurons reversibly, while mianserin, MDL 72222 and spiperone showed no significant effect. Continuous superfusion of IMG with MCPP suppressed LS-EPSP of 5-HT sensitive neurons by 5-HT 1P receptor desensitizated. CONCLUSION LS-EPSP of 5-HT sensitive neuron is mediated by 5-HT 1P subtype receptor.

Objective:To analyze the clinicopathological features, treatment and prognosis of Epstein -Barr virus(EBV) positive diffuse large B cell lymphoma(DLBCL) in children, so as to improve the knowledge of pediatricians on this disease.Methods:The data of 6 cases of EBV positive DLBCL who were initially diagnosed and regularly treated in Beijing Children′s Hospital from January 2016 to December 2019 were collected, including basic information (gender, age, first symptom, and course of disease), pathological results [immunohistochemistry, EBV encoded RNA(EBER), latent membrane protein(LMP), and C- MYC gene], immune function, EBV index, treatment group, treatment plan and prognosis. Results:There were 4 males and 2 females, with the average age of 6.67 years.The uric acid was 266.2 μmol/L, lactic dehydrogenase(LDH) was 346.5 U/L at early stage, and 1 patient had immunodeficiency.The immune function test before chemotherapy indicated that the proportion of auxiliary T cells decreased in 4 cases, and the humoral immune function was normal in all patients.There was no evidence of recent infection in 6 patients, and EBV-DNA increased in 3 patients.There were 2 cases of stage Ⅲ, 4 cases of stage Ⅳ, 1 case of giant tumor, 2 cases of symptom B, 6 cases of extranodal invasion, 4 cases of central invasion and 1 case of bone marrow invasion.Three patients died and three survived.Immunohistochemistry showed that: (1) CD 19, CD 20, and CD 79a were expressed in all patients, and CD 30 was expressed in 5 patients.(2) C- MYC gene was detected by immunofluorescence in situ hybridization method in all patients, and no MYC break, Bcl-2 and Bcl-6 break and amplification were found.(3) EBV: EBER and LMP-1 were expressed in all patients. Conclusions:The pathological changes of EBV positive DLBCL are similar to those adults.The origin of non-germinal center and extranodal and central invasion are more common.The prognosis of the patients with central nervous system invasion is very poor, and the recurrence and progress of the disease often occur in the treatment or in the early stage of drug withdrawal.At present, there is no effective and feasible treatment plan.It is suggested that the patients in the late stage should receive allogeneic hematopoietic stem cell transplantation as soon as possible after intensive treatment, so as to improve the survival rate.

Objective: To explore if conventional protein kinase C (cPKC: PKCα and PKCβ) contributes to paraquat (PQ) -induced abnormal permeability of mouse brain microvascular endothelial cells (BMECs) via the regulation of tight junction (TJ) proteins. Methods: The immortalized mouse brain endothelial cell line (bEnd.3) was used to establish a monolayer blood-brain barrier (BBB) model. In order to evaluate the function of the in vitro BBB model, the transendothelial electrical resistance (TEER) and permeability were measured by a Millicell-ERS volt-ohmmeter and sodium fluorescent (Na-FLU) , respectively. MTT assay was used to determine the relative survival rate of cells. The dose-response relationship was determined by treating cells with 0, 50, 100, 200, and 300 μmol/L PQ for 24 hours. The time-response relationship was determined by treating cells with 200 μmol/L PQ for 6, 12, 24, 48, and 72 hours. After the treatment of cells with 0, 100, 200, and 300 μmol/L PQ for 24 hours, the protein and mRNA expression levels of ZO-1, Occludin, and Claudin-5 were measured by immunofluorescence (IF) and quantitative real-time RT-PCR (qRT-PCR) , respectively; the expression of PKCα, PKCβ, phosphorylated (p) -PKCα, and p-PKCβ was determined by Western blot. After the treatment of cells with 200? mol/L PQ for 24 hours following the pretreatment with a classical PKC inhibitor (Go 6983, 1 μmol/L) for 1 hour, the protein expression of ZO-1, Occludin, Claudin-5, p-PKCα, and p-PKCβ was measured by Western blot. Results: The TEER of the bEnd. 3 cells increased gradually with the cell culture time, and reached a peak value of 114.3±6.9 Ω·cm² on day 6. According to the permeability analysis by Na-FLU, cell permeability gradually decreased with the cell culture time, and reached 1.7±0.2 cm/min on day 6, suggesting a well-behaved barrier function of cells. Compared with the control group, the survival rates of the bEnd.3 cells were significantly reduced after exposure to 100, 200, or 300 μmol/L PQ for 24 hours (P<0.05) , or after exposure to 200 μmol/L PQ for 6, 12, 24, 48, or 72 hours (P <0.05) , indicating a dose-and time-dependent relationship. The IF and qRT-PCR results showed that the protein and mRNA expression levels of ZO-1, Occludin, and Claudin-5 were significantly reduced with the increase in the concentration of PQ (P<0.05) . The Western blot analysis showed that compared with the control group, cells exposed to PQ had significantly higher protein expression of p-PKCα and p-PKCβ and significantly lower protein expression of ZO-1, Occludin, and Claudin-5 (P<0.05) . Compared with the PQ treatment group, the Go 6983 intervention group had significantly higher protein expression of ZO-1, Occludin, and Claudin-5 and significantly lower protein expression of p-PKCα and p-PKCβ (P<0.05) . Conclusion By activation of cPKC (PKCα and PKCβ) , PQ reduces the protein and mRNA expression of TJ proteins and enhances the permeability of murine BMECs.

One case of traumatic carotid-cavernous fistula (TCCF) with small fistula treated by transarterial detachable coil embolization was reported. The intermittent ipsilateral carotid compression was used to identify the final blocking of the residual fistula. The follow-up digital subtraction angiography showed that the TCCF was cured finally. From this case, we conclude that this method may be an effective way to treat TCCF with small fistula.
Adult ; Carotid-Cavernous Sinus Fistula ; therapy ; Embolization, Therapeutic ; methods ; Endovascular Procedures ; Female ; Fistula ; therapy ; Humans

OBJECTIVETo investigate the rationality of N3 classification and its sub-classification in the 7th UICC/AJCC TNM classification system.

METHODSClinicopathological data of 610 patients with stage N3 advanced gastric cancer who underwent standard D2 and D2+ radical surgery at the Department of Surgical Oncology, The First Hospital of China Medical University, from January 1980 to March 2010 were analyzed retrospectively. Patients were divided into N3a and N3b groups, and clinicopathological characteristics and prognosis were compared between N3a and N3b patients. Overall survival rate was determined using the Kaplan-Meier estimator. The log-rank test was used to identify differences between the survival curves of different groups. In multivariate analysis, Cox proportional hazard model was used to identify independent factors associated with prognosis.

RESULTSAmong 610 patients, 426 were men and 184 were women, 394 were N3a and 216 were N3b, with a mean age of(57±11) years old (range 23 to 83). A total of 19 842 lymph nodes were examined, in which 9 575 nodes were positive, with the metastatic ratio of 48.3%. The 5-year overall survival rate was 20.0%. Univariate analysis of prognostic factors suggested that tumor location (P=0.000), tumor size (P=0.003), Borrmann type (P=0.000), pathologic type (P=0.043), lymphatic vessel invasion (P=0.000), growth pattern (P=0.019), invasion depth (P=0.000), resection extent (P=0.000) and N3 sub-classification (P=0.000) were significantly associated with the prognosis of N3 patients. Further analysis showed that tumor size (P=0.028), invasion depth (P=0.000) and gastric resection extent (P=0.002) were significantly associated with the prognosis of N3a patients, while Borrmann type (P=0.034), lymphatic vessel invasion (P=0.002), invasion depth (P=0.008) and resection extent (P=0.003) were significantly associated with the prognosis of N3b patients. Multivariate analysis revealed that lymphatic vessel invasion (P=0.009), resection extent (P=0.001), invasion depth (P=0.000) and N3 sub-classification (P=0.000) were independent prognostic factors of N3 patients; resection extent (P=0.004) and invasion depth (P=0.001) were independent prognostic factors of N3a patients; lymphatic vessel invasion (P=0.006) and invasion depth (P=0.009) were independent prognostic factors of N3b patients. Comparison of 5-year survival rate revealed that there was significant difference between T2-4N3a and T2-4N3b patients (P=0.000), while there was no significant difference between T2N3a and T2N3b patients (P=0.140). On the contrary, there were significant differences between T3N3a and T3N3b patients, T4aN3a and T4aN3b patients, T4bN3a and T4bN3b patients, respectively (all P<0.05). Further comparison demonstrated that there were significant differences between T4aN3a and T4bN3a patients, T4aN3b and T4bN3b patients, respectively (P=0.000, P=0.041). Besides, there were no significant differences in 5-year survival rate between T2N3 (at present, staged as III(A), T3N3a (III(B) and T4aN3a (III(C) patients(P=0.506), and T3N3b (III(B), T4aN3b (III(C) and T4bN3a (III(C) patients(P=0.283), respectively.

CONCLUSIONSN3 sub-classification should be included in the final TNM classification system. It is suggested that T2N3, T3N3a and T4aN3a may be categorized into III(A stage, T3N3b, T4aN3b and T4bN3a may be categorized into III(B stage,T4bN3b may be categorized into III(C stage or IIII( stage.

Adult ; Aged ; Aged, 80 and over ; Female ; Gastrectomy ; Humans ; Lymph Nodes ; Lymphatic Metastasis ; Male ; Middle Aged ; Neoplasm Staging ; Prognosis ; Proportional Hazards Models ; Retrospective Studies ; Stomach Neoplasms ; classification ; Surgical Oncology ; Survival Rate ; Young Adult

Objective: To investigate the regulation of AMPK-mTOR signal transduction pathway in paraquat-induced autophagy of pheochromocytoma cells (PC12) . Methods: The PC12 cell were treated with terminal concentrations of 0, 25, 50, 100, 200, 300 and 400 μmol/L PQ for 24 hours, and the cells were induced by 300 μmol/L PQ for different time (6, 12, 24, 48 h) . MTT was used to detect the relative survival rate of cells, and the dose/time-effect relationship was determined respectively. The cells were treated with PQ at concentrations of 0, 100, 200 and 300 μmol/L PQ for 24 hours, the lactate dehydrogenase (LDH) activity in the culture supernatant was detected by spectrophotometry. The expression and distribution of autophagic lysosomes were observed by MDC staining. The intracellular reactive oxygen species (ROS) was detected by dichlorofluorescein diacetate (DCFH-DA) . The expression of microtubule-related protein 1 light chain 3 (LC3) was measured by immunofluorescence. The protein level of LC3Ⅱ, p62, Beclin1 and p-AMPK, p-mTOR were detected by Western blot. Results: Compared with the control group, the cell survival rate of the 100, 200, 300, 400 μmol/L PQ group decreased significantly, and showed a dose-dependent pattern (P<0.05) . The survival rate of cells treated with 300 μmol/L PQ decreased significantly with the prolongation of exposure time (12, 24, 48 h) (P<0.05) . Compared with the control group, the activity of LDH in 100, 200, 300 μmol/L PQ-treated group were significantly higher while The fluorescence intensity of ROS was significantly increased (P<0.05) . MDC staining showed the density of autophagic lysosomes and fluorescence intensity in PQ-treated group significantly decreased (P<0.05) . Immunofluorescence results showed the LC3 fluorescence intensity of PQ-treated group decreased which was consistent with MDC staining results. Western blot showed that compared with the control group, the expression levels of autophagy related proteins LC3Ⅱand Beclin1 in PQ-treated group were significantly lower, while the expression level of p62 protein was higher (P<0.05) . p-AMPK protein level decreased and p-mTOR protein expression increased in 200 and 300μmol/L PQ-treatd groups, with statistically significant difference (P<0.05) . Conclusion AMPK-mTOR signaling pathway played a regulatory role in PQ-induced decreased autophagy of PC12 cell.

Objective To study the method and therapeutic effect of microsurgical treatment by unilateral subfrontal approach in patients with large olfactory groove meningiomas. Methods The clinical data of 16 patients with large olfactory groove meningiomas who had underwent microsurgical treatment by unilateral subfrontal approach from January 2010 to December 2017 were analyzed retrospectively. Results Total removal of tumor (Simpson Ⅰ and Ⅱ grade) was achieved in 14 cases and subtotal removal of the tumor (Simpson Ⅲ) was in 2 cases. No patient died from the microsurgery. The treatment effect was satisfactory in all patients during the follow- up. Conclusions The microsurgical treatment by unilateral subfrontal approach in patients with large olfactory groove meningiomas conforms to the concept of minimal invasive surgery, which provides enough surgical space, and the effect of surgery is satisfactory. So the approach is a good choice for the removal of large olfactory groove meningiomas.

Objective To investigate the influence of Tai Chi posture on knee joint load and the strategy of coordinated muscle contraction. Methods Twenty Tai Chi practitioners with more than 3 years of Tai Chi practice was recruited. By using high-speed motion capture system andthree-dimensional force plate, the adduction angle, tibial angle, joint force, joint torque of the supporting leg during the Tai Chi step lunge movement were collected, and the quadriceps and gastrocnemius muscle strength were obtained through simulation method. The muscle strength performance, recruitment mode and activation method of baseline step, toe-out step and toe-in step were compared. ResultsThe tibial angle and adduction force increased in the toe-out step but those parameters in the toe-in step remained unchanged; the strength of the medial femoris, semimembranosus, semitendinosus and lateral gastrocnemius muscle increased in the toe-out step; the external femoral muscle and medial gastrocnemius muscle increased in the toe-in step. The gastrocnemius muscle was preferentially activated than the quadriceps muscle, and the way of muscle recruitment changed. Conclusions Tai Chi posture will change the way of muscle force recruitment and affect the knee joint function. Standardized movements can be used as the reference for osteoarthritis exercise therapy and have some significance in clinical application.

Objective: To review the clinical-pathology characteristics of 19 relapsed pediatric mature B cell lymphoma and to find the risk factors for recurrence and the feasible treatment after relapse. Method: Data of 212 pediatric B cell lymphomas cases in Beijing Children′s Hospital from January 2006 to June 2015 were collected retrospectively. All the patients were treated according to the B cell lymphoma regimen of Beijing Children′s Hospital. During the study period, 19 of 212 cases were relapsed; the clinio-pathological characteristics of relapsed patients before treatment and after relapse were analyzed retrospectively, the treatment outcomes after relapse were summarized and the patients were followed-up. Result: Nineteen of 212 cases had relapsed disease, for these relapsed patients: the median age at initial diagnosis was 5.5 years old, the median level of uric acid was 384(range, 121-713)μmol/L, the median level of lactate dehydrogenase(LDH) was 1 323(range, 146-6 370)U/L. Among 19 relapsed patients, 10 had local relapse and 9 had multiple relapses; 17 were Burkitt′s lymphoma and 2 were diffuse large B cell lymphoma. Staging: 2 cases were stageⅡ, 3 cases were stage Ⅲ and 14 cases were stage Ⅳ. Risk group: 6 cases were group B and 13 cases were group C. Nine cases had bone marrow involvement and 10 cases had central nervous system(CNS) involvement. Acute tumor lysis syndrome was seen in 6 cases during the early treatment and 13 cases had delayed treatment. Treatment after relapse: 10 cases received further treatment after relapse (rituximab + 1-4 courses high intensity second-line chemotherapy), 3 cases received autologous stem cell transplantation. There was no chemotherapy or infection related death, 3 cases achieved complete remission (CR). For all the 212 patients, the median follow-up time was 47 (range, 1-131)months and the 5-year event free survival(EFS)rate was (89.4±0.2)%. For the 19 relapse cases, the 5-year overall survival (OS) rate was (21.1±0.1)%, CR rate after relapse was 30%, patients died of the progression of the primary disease, no treatment related death occurred. Univariate analyses showed that bulky disease, stage Ⅳ, maxillofacial and CNS involvement, LDH>1 000 U/L, delay treatment, day 7 evaluation shrink <25%, residual diseases after 3 months treatment are relapse risk factors (all P<0.01). Conclusion Patients relapse during the treatment or at the early stage after the end of all chemotherapy have poor prognosis. So far there is no effective method for early relapse patients; the late relapse patients had the possibility of CR if they are sensitive to salvage treatment. In conclusion, to improve the outcome, the key point is to reduce the relapse.