Humans ; Influenza A virus ; Influenza Vaccines ; Influenza, Human ; epidemiology ; prevention & control ; virology

Objective:To optimize the clarification process of total flavonoids extract from Geum aleppicum with ZTC1+1-Ⅱtype clarifying agent. Methods:With the solid removal rate, retention rate of the total flavonoids and clearance rate of protein as the indi-ces, single factor tests were adopted to study the effects of extract concentration, amount of clarifying agent, reaction temperature and reaction time on the clarification results. Results:The optimal clarification process was as follows:the extract concentration was 0. 5 g ·ml-1 , the amount of clarifying agent was 4% component B and 2% component A, the reaction temperature was at 60℃, and the soaking time was 60 min. The retention rate of total flavonoids was 91. 32%, the clearance rate of protein was 35. 82%, and the solid removal rate was 8. 1%. Conclusion:ZTC1+1-Ⅱ type clarifying agent has good effect on the clarification of total flavonoids extract from Geum aleppicum with promising feasibility and stability.

A BBB co-culture cell model consisting of rat brain microvascular endothelial cells (BMEC) and astrocytes (AS) was established to study the effect of Angelica dahurica coumarins on the transport behavior of puerarin across blood-brain barrier (BBB) in vitro and in vivo. The barrier function of this model was evaluated by measuring the transendothelial resistance, phenol red permeability and BBB related protein expression. The permeability assay and western blot methods were performed to study the effects of Angelica dahurica coumarins on the BBB permeability and the expression of BBB related protein. The animal experiment protocols in this study were approved by the Animal Ethics Committee of Xi'an Jiaotong University (Animal Ethics No.: 2021-1329). The results showed that the established BMEC/AS co-culture model could be used to evaluate drug transport across BBB in vitro. After combined with Angelica dahurica coumarins, the transport capacity of puerarin was significantly increased in vitro and in vivo. Additionally, Angelica dahurica coumarins enhanced BBB permeability and inhibited the protein expression of P-glycoprotein (P-gp), zonula occludens-1 (ZO-1) and occludin. Angelica dahurica coumarins might increase BBB permeability by inhibiting the expression of P-gp and tight junction protein, thereby increasing the content of puerarin in brain tissue.

OBJECTIVETo study the effect of Jingui Shenqi Pill (JSP) on morphology of spinal cell apoptosis in rats injured by 192Ir irradiation.

METHODSOne hundred and twenty rats were randomly divided into four groups: the model group, the JSP group, the prednisone group and the normal group. Corresponding pharmaceutics were given to rats once a day for 14 days respectively. Then except rats in the normal group, the others received 192Ir interstitial irradiation with the dosage of 22 Gy using back-fixing technology. The injured segments of spinal cord were taken out for HE staining, TUNEL examination and observation with electron microscope 8 hrs, 24 hrs and 4 weeks after irradiation.

RESULTSHE staining examination showed no obvious histological change in rats 8 and 24 hrs after irradiation, but pathological changes, as tissue rarefaction and hemorrhage did found in white matter of spinal cord shown by TUNEL 4 weeks later. Electron microscopic examination and TUNEL staining showed that as compared with the model group, the apoptotic index in the JSP and predinisone treated groups was significantly lower (P < 0.01) 8 hrs after radiation, but it showed insignificant difference between groups at the time points of 24 hrs and 4 weeks after radiation (P > 0.05).

CONCLUSIONJSP could act against apoptosis of gliocyte in spinal cord of rats in early stage after brachytherapy, indicating that JSP possessing a prednisone-like action.

Animals ; Apoptosis ; drug effects ; radiation effects ; Brachytherapy ; adverse effects ; Drugs, Chinese Herbal ; therapeutic use ; Iridium Radioisotopes ; Male ; Phytotherapy ; Radiation Injuries ; pathology ; Radiation-Protective Agents ; therapeutic use ; Rats ; Rats, Sprague-Dawley ; Spinal Cord ; pathology ; radiation effects

The study is aimed to distinguish morphological characteristics of Dalbergiae Lignum collected from crude drug's markets and establish a identification methods and the quality standard for Dalbergiae Lignum. The macroscopic and microscopic features of Dalbergiae Lignum from crude drug's market were observed, analyzed and compared according to Hongmu specification issued by the People's Republic of China in 2000, and by the characteristics recorded in domestic monograph of Mucai Shibie (wood identification). The redwood of Dalbergiae Lignum cut into small pieces as medicinal material are dry heart wood of mahogany (trees from Dalbergia sp.), which characteristics of the small pieces as crude drug are different. There are differences in macroscopic and microscopic features about texture of wood and color, odor, taste, transverse section, radial section, tangential section. The results can provide basis for identification, application and improment of the quality standard of Dalbergiae Lignum as medicinal material.
China ; Dalbergia ; anatomy & histology ; chemistry ; classification ; Herbal Medicine ; economics ; Plants, Medicinal ; chemistry ; classification ; Quality Control ; Xylem ; anatomy & histology ; chemistry

Objective To discuss the surgical treatment of spinal injury, and provide insights on key points and related issues for operations. Methods Two hundred and five cases of spinal fracture were treated through posterior surgical treatment. Under C-arm X-ray monitoring, surgeries had been operated on pedicle screws insertion, vertebral canal decompression, over-extending reduction position, and placed the connecting rod, knocked in the bone graft and finally transplanted the paraspinal bone. Results After operations , the height and morphology of vertebral bodies and spinal physiological curvature were basically recovered analyzed by X ray examination. The follow-up results (in the average of 14 to 36 months) indicated that there were 4 cases of delayed infection, 7 cases of loosen screw, 6 cases of broken screw (14 screws)and 1 case of broken stick, with no secondary nerve injury or other syndromes. Conclusion The vertebral pedicle screw internal fixation manipulated easily, which could sufficiently enlarge vertebral canal in order to decompression. In addition, during the operation, together with over-extending reduction position is beneficial to regain the height of fractured vertebral bodies.

ObjectiveTo investigate the changes of high resolution computerized tomography (HRCT) of chest and quality of life and the main correlated factors of HRCT for interstitial lung disease(ILD) in patients with rheumatoid arthritis(RA).MethodsTwenty-six initial treatment patients with RA-ILD were enrolled.The following parameters were noted at baseline,12 and24 weeks for each patient:clinical features,HRCT,quality of life.ANOVA was used for repeated measurement data and stepwise multiple regression analysis were used to analyze the relativity between HRCT and other parameters.ResultsTwentysix patients were included.Twelve male(46％) patients were followed up for 24 weeks and pulmonary infection occurred in 11 patients,so the frequency rate was 42％.After being treated with prednisone and cyclophosphamide for 24 weeks,the HRCT scores were lower than before [(8+6) vs(12±5),respectively] and 16 patients' condition were improved,6 were in stable and 4 had deteriorated disease.For quality of life,the impact scores,symptom scores,activity scores,and total scores of St.George's respiratory questionnaire (SGRQ) were significantly decreased(F=3.783,6.362,4.217,4.426,P＜0.05) and all domains of the short form-36 health survey questionnaire(SF-36) had significant improvement after treatment.Stepwise multiple regression analysis showed that the impact scores(P=0.000) and symptom scores(P=0.001) of SGRQ,vitality (P=0.012) of questionnaire,globulin (P=0.027) in prior treatment and symptom scores (P--0.001 ) of SGRQ,course of disease (P=0.002),MRC score (P=0.011),vitality (P=0.036) of SF-36 questionnaire in post-treatment were the main correlated factors with HRCT features.ConclusionMale RA patients are prone to develop ILD and RA-ILD is susceptible to pulmonary infection.After early treatment,HRCT and quality of life in most patients can be improved.Respiratory symptoms,severity of dyspnea,globulin level,course of disease and vitality of patients are significantly correlated with HRCT.

To look for a more stable and convenient way of constructing short hairpin RNA expression vectors targeting the latent membrane protein-1(LMP-1) encoded by Epstein-Barr virus(pshLMP1), and to study the inhibition function of pshLMP1 expression vectors in HNE1 cells, we designed the pshLMP1 expression cassette and pshLMP1 expression vectors by both the annealing method and PCR method and then co-transfected with pEGFP-N1-1158 into HNE1 cells to observe the mRNA and protein levels of LMP-1 genes by green fluorescence analysis, RT-PCR and western blot. pshLMP1 expression vectors were successfully obtained by both methods but better cloning efficiency was achieved and fewer deletions and mutations of nucleotides were achieved with the PCR method. Furthermore, the mRNA and protein levels of LMP-1 genes were down-regulated by pshLMP1 expression vectors. According to our research, we found that the PCR method provides a more efficient way to construct pshLMP1 expression vectors which have the ability to inhibit the function of LMP-1 genes expressed in HNE1 cells, and also provides a novel application of RNA interference technology against-EBV.

Objective: To observe the clinical efficacy of tendon-regulating and bone-setting manipulation combined with endurance resistance exercises in treating female with chronic neck pain, and explore the mechanism. Methods: A total of 57 female patients with chronic neck pain who met the inclusion criteria were randomly divided into a manipulation group (29 cases) and a medium-frequency electrotherapy group (28 cases). Patients in both groups received the same endurance exercise therapy, while those in the manipulation group received additional tendon-regulating and bone-setting manipulation, and those in the medium-frequency electrotherapy group received additional medium-frequency electrotherapy. Both groups were treated for 5 weeks. Before and after treatment, the neck function of patients was evaluated by visual analog scale (VAS), Analgesy-Meter, Northwick Park questionnaire (NPQ), root mean square (RMS) and median frequency (MF) of surface electromyography of sternocleidomastoid muscle and posterior cervical extensor muscle, and the patients were followed up at a month after treatment. Results: All patients completed the treatment and were followed up. Compared with the same group before treatment, the VAS scores of both groups decreased, the tenderness values increased, the RMS and MF values increased, and the NPQ scores decreased after treatment (all P<0.05). The improvement of manipulation group was more notable than that of medium-frequency electrotherapy group (all P<0.05). At one-month follow-up, the VAS and NPQ scores of the manipulation group were lower than those before and after treatment, and the VAS and NPQ scores of the medium-frequency electrotherapy group were only lower than those before treatment; the two scores of the manipulation group were lower than those of the medium-frequency electrotherapy group (both P<0.05). Conclusion: Tendon-regulating and bone-setting manipulation combined with endurance resistance exercises can relieve neck pain and cervical dysfunction in female patients with chronic neck pain. The efficacy of this method is more durable and better than that of medium-frequency electrotherapy combined with endurance exercises.

Head and Neck Neoplasms ; surgery ; Hemangioma, Cavernous ; surgery ; Humans ; Infant ; Thoracic Neoplasms ; surgery