Objective To explore the effect of DNA methylation inhibitor 5-aza-2'-deoxycytidine (5-Aza-CdR) on proliferation and tumor suppressor gene PRDM1α expression in Burkitt's lymphoma cell line NAMALWA. Methods MTT was used to study the impact of DNA methylation inhibitor on proliferation in NAMALWA cells,and comparative real-time reverse transcription-polymerase chain reaction (RQ-PCR) with SYBR Green assay was used to detect PRDM1α gene expression. Results MTT results showed that 5-AzaCdR inhibited proliferation of NAMALWA cells in a dose-dependent manner.After treated with 5-Aza-CdR for 72 h at 0.01,0.0625,0.1,0.125,0.25,0.5,1,2 and 4 μmol/L,the inhibition rates were 21.93 ％,39.23 ％,47.69 ％,50.37 ％,53.54 ％,57.72 ％,62.31％,65.68 ％,67.87 ％,respectively,and the differences of absorbance among the groups were also statistically significant (all P＜ 0.01). Meanwhile, 5-Aza-CdR could induce the re-expression of PRDM1α, and △Ct of 0.5, 1, 2 μmol/L groups showed significant differences compared with control group (all P ＜ 0.05). Conclusion DNA methylation inhibitor 5-Aza-CdR can significantly inhibit the proliferation of Burkitt' s lymphoma cell line NAM ALWA,and the possible mechanism of this inhibition may be induction of demethylation and re-expression of PRDM 1α.

Objective To observe the effect of porphyra yezoensis polysaccharide (PYP) on cerebrum tissue of diabetic rats and apoptosis. Methods 60 Wistar rats were randomly divided into normal control group, diabetic model group, and treated groups respectively with PYP (0.25 g/kg × d), PYP (0.5 g/kg × d), and PYP (1 g/kg × d). The cerebrum pathologic changes were observed by HE staining method, and the number of apoptotic cells was observed by electrophoresis and the mRNA expression of p53 and bcl-2 was confirmed by RT-PCR. Results PYP improved the cerebrum pathologic changes of diabetic rats. With comparison to the diabetic model group, the cerebrum pathologic change in the treated groups also improved. And the number of apoptotic cells, the expression of p53 in cerebrum tissue decreased and expressions of bcl-2 rose. Conclusion PYP can decrease the expression of p53 in cerebrum tissue and rise expressions of bcl-2 so as to protect brain tissues from cerebral ischemia.

Objective:To explore the effect of different doses of lidocaine on recovery quality of patients with iodine-deficiency goiter after general anesthesia resection.Methods:Using a prospective design, 108 patients who underwent iodine-deficiency goiter resection in Yantai Yeda Hospital from April 2018 to April 2020 were selected as the research subjects. The patients were divided into control group (normal saline), lidocaine group A (1 mg/kg) and lidocaine group B (2 mg/kg) by random number table method, 36 cases in each group. The corresponding dose of lidocaine or the equivalent dose of normal saline was pumped into the vein after anesthesia induction and intubation for 30 minutes. The changes in the diastolic blood pressure (DBP), systolic blood pressure (SBP) and blood glucose (GLU) levels of the three groups were observed before administration, immediately after the operation, immediately after opening the eyes, immediately after extubation, and 10 minutes after extubation; at the same time, arousal and restlessness score (RS), sedation score (Ramsay), visual analogue score (VAS) and adverse reactions(coughing, nausea and vomiting, respiratory depression) occurrence were recorded.Results:At the moment of eye opening, immediately after extubation and 10 minutes after extubation, DBP (mmHg: 77.26 ± 4.85, 73.45 ± 4.37, 70.94 ± 4.45, 83.53 ± 6.19, 77.86 ± 5.33, 74.14 ± 5.20, 73.86 ± 5.73, 68.41 ± 5.16, 63.09 ± 5.24), SBP (mmHg: 129.17 ± 6.54, 121.25 ± 6.07, 116.24 ± 5.86, 137.48 ± 6.62, 129.53 ± 6.38, 123.07 ± 6.25, 125.65 ± 6.13, 117.48 ± 6.09, 108.17 ± 6.04), GLU level (mmol/L: 5.83 ± 0.36, 5.37 ± 0.29, 5.12 ± 0.26, 6.69 ± 0.34, 5.84 ± 0.30, 5.57 ± 0.27, 5.61 ± 0.32, 5.25 ± 0.31, 4.97 ± 0.28) of lidocaine group A and lidocaine group B were significantly lower than those of control group, the difference were statistically significant ( F=17.520, 25.755, 36.034, 41.028, 45.525, 74.330, 10.397, 49.756, 52.348, P < 0.05); among them, the DBP, SBP and GLU levels of lidocaine group A and lidocaine group B were lower than those of control group, and lidocaine group B was lower than lidocaine group A ( P < 0.05). The RS and VAS of lidocaine group A and lidocaine group B were significantly lower than those of control group, and Ramsay was higher than that of control group ( P < 0.05); and the RS and VAS of lidocaine group B were lower than those of lidocaine group A, the Ramsay was higher than that of lidocaine group A ( P < 0.05). The incidence of coughing, nausea and vomiting in lidocaine group A and lidocaine group B were lower than those in the control group ( P < 0.05); and there was no respiratory depression in the three groups. Conclusions:Thrity minutes after induction of anesthesia, continuous pumping of 2 mg/kg lidocaine can maintain blood pressure and GLU of patients undergoing general anesthesia for iodine-deficiency goiter, and effectively reduce restlessness, pain and adverse reactions during the recovery period. It is a satisfactory dose for thyroid surgery patients to wake up and comfortably.

Tuberculous meningitis is an important global medical problem which gives rise to high morbidity and mortality. It is the most severe form of extrapulmonary Mycobacterium tuberculosis. Comprehensive prevention effort, prompt diagnosis and rational treatment are all keys to improving treatment outcomes; yet many unsolved problems remain. On the other hand, the new problems, such as HIV co-infection and drug-resistance are posing important challenges. This review outlines the epidemiology, pathogenesis, diagnosis, management and prognosis of tuberculous meningitis. We mainly focus on research carried out in the recent decades, giving special attention to the work done among the Asian populations
Tuberculosis, Meningeal

Objective To introduce the clinical experience and investigate the significance and safety of harmonic scalpel combined with meticulous capsular dissection technique in thyroidectomy.Methods A retrospective analysis was performed on 275 patients who underwent thyroidectomy among which 135 patients were treated by capsular dissection technique and harmonic scalpel (harmonic scalpel group),the other 140 patients were treated by electric knife and traditional ligation (traditional group).The thyroidectomy operative time,intraoperative bleeding volume,postoperative drainage volume and surgical complications were compared between two groups.Results In harmonic scalpel group,the thyroidectomy operative time of total thyroidectomy and subtotal thyroidectomy was significantly shorter than that in traditional group [(50.0±6.9) min vs.(82.0± 14.4) min,(39.9±6.6) min vs.(73.1 ± 14.5) min](P＜0.01).The intraoperative bleeding volume of total thyroidectomy and subtotal thyroidectomy in harmonic scalpel group was significantly lower than that in traditional group [(18.7 ± 10.9) ml vs.(41.9 ± 15.6) ml,(17.7 ± 9.3) ml vs.(42.2 ± 14.6) ml] (P ＜ 0.01).The postoperative drainage volume of total thyroidectomy and subtotal thyroidectomy in harmonic scalpel group was significantly lower than that in traditional group [(40.7 ± 11.7) ml vs.(53.9 ± 17.5) ml,(42.7 ± 14.5) ml vs.(61.8 ±22.9) ml](P＜0.01).The rate of temporary hypoparathyroidism and temporary recurrent laryngeal nerve palsy had no significant difference between two groups (P ＞ 0.05).Conclusions Application of harmonic scalpel combined with meticulous capsular dissection technique in thyroidectomy can significantly reduce thyroidectomy operative time,intraoperative bleeding volume,postoperative drainage volume and surgical complications.Harmonic scalpel combined with meticulous capsular dissection technique in thyroidectomy should be widely used.

Aim: To study the effects of berberine( Ber) on the rapidly activating component( Ⅰ_(Kr)), the slowly activating component(Ⅰ_(Ks)) of the delayed rectifier potassium current and the inward rectifier potassium current(Ⅰ_(K1)) in cardiomyopathic guinea pig ventricular myocytes. Methods: After guinea pigs were ip L-thyroxine 0. 5 mg/kg for 10 d, their hearts were cardiomyopathic. Then whole cell patch-clamp recording technique was used to observe the effect of 30 μmol/L Ber on the Ⅰ_(Kr), Ⅰ_(Ks) and Ⅰ_(K1) in cardiomyopathic guinea pig ventricular myocytes. Results: In cardiomyopathic guinea pig ventricular myocytes, Ber 30 μmol/L markedly inhibited Ⅰ_(Kr) and Ⅰ_(Ks) by 22. 8% and 29. 5% at + 10 mV and + 80 mV, respectively. The effect of Ber on Ⅰ_(Ks) was greater than that on Ⅰ_(Kr). Ber 30 μmol/L also inhibited the inward component of Ⅰ_(K1) by 29. 1% at + 120 mV, but the reverse potential of Ⅰ_(K1) was unaffected. Ber( 1-300 μmol/L) was shown to inhibit Ⅰ_(Kr) and Ⅰ_(Ks) in a concentration-dependent manner. Their IC_(50), were 76. 74 μmol/L and 55. 37 μmol/L, respectively. Conclusion: Ber inhibited Ⅰ_(Kr),Ⅰ_(Ks) and Ⅰ_(K1) in cardiomyopathic guinea pig ventricular myocytes, which may be important in understanding the antiarrhythmic effects of this drug.

OBJECTIVE:To study the possible mechanism of Bushenshengsui I(BSSS I),a kind of compound Chinese herbs,in treatment of aplastic anaemiaMETHODS:The animal model of mice with aplastic anaemia was established by 60Co irradiationThe therapeutic effects of BSSS I on aplastic anaemia were observed with the changes of peripheral blood cell count,bone marrow GM-CFU-c and activities of blood IL-1,IL-2 and IL-6RESULTS:After treatment with BSSS I,the peripheral blood cell count,amount of bone marrow karyocyte and GM-CFU-c of bone marrow of the aplastic anaemia mice elevated markedly,and the blood IL-1 and IL-6 activities increased obviouslyThe levels of IL-6 increased to the level of normal and showed positive relationship with IL-1(r=0904)The levels of IL-2 of the treatment group showed a decrease but with no significant differencesCONCLUSION:The results showed that BSSS I may improve the function of hematopoiesis by elevating the peripheral blood cells and the amount of bone marrow karyocytes,accelerating GM-CFU-c of bone marrow,and through moderating the activities of IL-1,IL-2,IL-6

Objective To investigate the impact of human adipose-derived stem cells(hASCs) -plastelet-rich plasma(PRP) composite on the wound healing of radiation skin injury of nude mice.Methods ASCs were isolated from healthy adults after liposuction, conducted primary culture and subculture.PRP was prepared by two-step ultracentrifugation.The ASCs-PRP composite was prepared with ASCs (1 ×107cells/ml) at passage 6 and PRP.Twenty-four nude mice were randomly divided into 4 groups (n=6).A round shaped full-thickness skin defect (D=1cm) was made on the mice back after 20Gy (60Co) round shaped exposure (D=2cm).Right after radiation, wounds were treated as follows,in group A,there was ASCs+PRP, in group B, PRP,in group C, ASCs,in group D, sham group.The wounds were observed at postoperative 7 and 14 days.HE and CD31 stain were observed at 14th days after surgery.Results The wound healing of group A healed completely at 14th days.In group D,the wound healing were slowest and still filled with granulation tissue at 14th days.The wound healing of group B and group C were faster than that of group D, but they haven′t healed completely at 14th days.The inflammatory cells were significantly lower and the blood vessel density positive rate were significantly higher in ACSs+PRP group than in ACSs group,PRP group and sham group (P<0.05).Conclusion ASCs-PRP Composite can accelerate the wound healing of radiation skin injury by promoting wound angiogenesis.

[Objective] To study the effect of celecoxib on osteoblast apoptosis induced by titanium particle in neonatal rats. [Methods]The best in vitro celecoxib serum concentration for promoting proliferation of osteoblast in neonatal rats was obtained through MTT.One group of rat osteoblast in vitro was cultured with serum containing saline and titanium particle and the other was cultured with serum containing celecoxib and titanium particles.Concentrations of TNF-? and PGE-2 in cells collected after 24 hours were analyzed by ELLSIA,COX-2 mRNA and protein were indicated by FO-PCR and Westren blot.[Results]Some cellar factors such as COX-2,TNF-? and PGE-2 could be induced by titanium particle in in vitro,but celecoxib could inhibit expression of these factors by COX-2 pathway.[Conclusion]Celecoxib coule be a promising drug for treatment of aseptic loosening.

Objective To study the clinical characteristics of obstructive sleep apnea-hypopnea syndrome in the aged. Methods Forty-two over 60 patients with obstruction sleep apnea-hypopnea syndrome (OSAHS) diagnosed by polysomnography (PSG) and 42 matched but less than 60 years OSAHS patients were selected, who were admitted to our hospital from February 2003 to December 2005. The clinical presentations and the results of PSG monitoring were analyzed between the two groups. Results The apnea-hypopnea index (AHI) and microarousal index (MAI) in the aged group were significantly lower than that in the younger group (P0.05). The number of severe OSAHS in the aged group was less than in the younger group (P