Aim To investigate the effects of K + channel blockers on arsenic trioxide-induced HeLa cell death. Methods Viability of HeLa cells was assessed by mitochondrial dehydrogenase activity using colorimetric MTT assay and the voltage-dependent K+ currents were recorded by using patch-clamp rest living cells after As2 O3 24 h-incubation showed significant increase of K + currents densities. At + 80mV, the densities of K+ currents (61 ± 18) pA/10 pF (n = 8) in As2O3 24 h-incubation group were significantly more than that in the control group (38 ± 10) pA/10 pF (n = 8, P ＜ 0. 05 ). The HeLa cells were prevented partially from As2 O3-induced cell death by co-application for 24 h with typical voltageeffects on HeLa cells. Conclusion Chronic treatment with As2 O3 increased voltage-dependent K+currents in HeLa cells and the cell death induced by As2O3 was reduced partially by voltage-dependent K +channel blockers, 4-aminopyridine or tetraethylammonium.

The origin of nerves innervating the small intestine and oral part of the colon of the cat was studied by means of the retrograde axonal transport of HRP. Twelve adult cats were used in this experiment. The proximal cut end of the superior mesenteric plexus was immersed in HRP solution, in order to localize the neurons which contribute fibers to this plexus. Neurohistochemical procedures were processed according to Mesulam's tetramethylbenzidine (TMB) method. HRP labeled cells or fibers can be identified bilaterally in the following places: 1. The dorsal motor nucleus of the vagus nerve; about 80% of the labeled cells were found in a region from 0.4mm below to 2.0 mm above the obex, approximately at the rostral two-thirds of the middle segment of this nucleus. 2. The reticular formation of medulla; only a few cells labeled and 92% of them were located in an area from 0.2, mm to 2.7 mm above the obex. 3. The coeliac-superior mesenteric ganglion complex; almost all of the labeled cells were concentrated in the caudal part of it, near the origin of the superior mesenterie plexus. 4. The nodose ganglion; most of the oval or round labeled cells were of medium or small size, their diameters vary from 30 to 40?m, and the average total numbers of the labeled cells were 661 in the left and 695 in the right ganglion respectively. 5. The spinal ganglia; small round or oval labeled cells (25～45 ?m in diameter) were found in the left T_2 to L_5 and right T_2 to L_4 ganglia, with the most heavily labeled segments at T_(13) and L_1 (left, mean 365; right, mean 34% of all labeled cells). The average total number of the labeled Cells were 1872 in the left and 1698 in the right side. 6. Transganglionic labeled fibers were seen in the gracile nuclei of one cat, suggesting that HRP molecules are transported retrogradely in the peripheral process and anterogradely in the centrally projecting process of the same neuron of spinal ganglia.

Objective To explore the diagnostic consistency and correlation between MR discography (MRD) and CT discography (CTD) in diagnosing chronic low back pain. Methods Guided by C - arm fluoroscopy the mixed solution of gadoterate meglumine (GD-DOTA) and Iohexol (GD-DOTA at a dilution of 1 ∶ 400 with Iohexol) was injected into 96 lumbar intervertebral discs of the 36 patients. CT scanning was performed at 15 minutes after the injection of contrast, and axial together with sagittal SE T1WI MR scanning was carried out one hour after the injection. CTD and MRD images were randomly numbered and were independently evaluated by two experienced radiologists according to Dallas discogram scale in order to assess the diagnostic consistency and correlation between (MRD) and (CTD). In addition the diagnostic value of MRD was evaluated. Results The results revealed that in determining disc degeneration grade CTD and MRD were highly consistent with each other(Kappa = 0.836, P < 0.01), and the diagnostic results judged by the two reviewers were essentially in agreement (ICC = 1.00, P < 0.01; r = 0.997, P < 0.01). Higher consistency (Kappa = 0.836, P < 0.01) and correlation(ICC = 0.90, P < 0.01; r = 0.869, P < 0.01; Kappa =0.836, P < 0.01) in determining annulus rupture extent were also obtained. Conclusion MRD is an accurate diagnostic method for the determination of disc degeneration and the severity of annulus rupture, and this technique has greater consistency and correlation with CTD in diagnosing chronic low back pain.

OBJECTIVE:To compare the contents of loganic acid,swertiamarin,6′-O-β-D-glucosyl gentiopicroside,gentiopi-croside,sweroside,isoorientin and isovitexin in wild and cultivated Gentiana officinalis,and to provide basis for rational use of G. officinalis. METHODS:UPLC method was adopted. The separation was performed on ACQUITY UPLC? BEH C18 column (50 mm × 2.1 mm,1.7 μm) with mobile phase consisted of methanol-0.04% phosphoric acid (gradient elution) at the flow rate of 0.3 ml/min. The detection wavelength was set at 242 nm,and column temperature was 30 ℃. RESULTS:For loganic acid,swertiama-rin,6′-O-β- D-glucosyl gentiopicroside,gentiopicroside,sweroside,isoorientin and isovitexin,a good linearity was obtained in the range of 2.1-537.1 μg,1.05-270 μg,0.92-236 μg,11.1-2 830 μg,0.75-192 μg,0.167-102 μg,0.216-52.80 μg(r≥0.999 5), respectively. Their average recoveries were 97.72%-99.84%(RSD≤3.39%,n=6). The contents of loganic acid,swertiamarin, 6′-O-β-D-glucosyl gentiopicroside,gentiopicroside,sweroside and isoorientin in the wild sample were higher than in the cultivat-ed;the content of isovitexin was lower than the cultivated,but there was no statistical significance(P>0.05). The sum of gentiopi-croside and loganin acid content were all higher than 2.5% in both wild and cultivated samples,and met the requirements of 2015 edition of Chinese Pharmacopoeia(first part). CONCLUSIONS:The content difference of 7 indicative constituents in wild and cul-tivated G. officinalis is not statistically significant,and the indicative constituents of the pharmacopoeia is qualified.

[ABSTRACT]OBJECTIVETo assess the sleep body position's effects on AHI and ODI during sleep in obstructive sleep apnea hypopnea syndrome (OSAHS) patients with different severity.METHODSThe clinical data of 113 subjects who had been diagnosed OSAHS or normal by polysomnography (PSG) between 2013 and 2014 in our department were retrospectively studied. They were divided into normal control group (AHI<5/h, 41 patients), mild to moderate OSAHS group (5/h30/h, 40 patients). PSG data of AHI and ODI in different body position in each group were further analyzed.RESULTSIn normal group, The AHI and ODI in supine position were significantly higher than that in the left or right lateral position, and the difference between the left and right lateral position was not significant. In the mild to moderate OSAHS group, the AHI and ODI in supine were higher than that in the left lateral position slightly, while the data in supine was higher than that in the right lateral position significantly. In the severe group, the data between the supine and the left lateral position was not statistically different, while the supine position data was higher compared with that of the right lateral position. CONCLUSIONAHI and ODI were higher in supine position than that in lateral position, while the AHI and ODI in right lateral position is higher than that in left lateral position in OSAHS patients with different severity. The ODI and AHI are consistent in reflecting the severity of the OSAHS.

OBJECTIVE: To evaluate the curative effect of continuous positive airway pressure(CPAP) combined with modified oral appliance (MOA) in the treatment of severe OSAHS. METHOD: The research chose 120 male patients with severe OSAHS. They were treated with CPAP and MOA (30 cases), CPAP (30 cases), and MOA (30 cases) respectively. At the same time, the rest 30 cases without any treatment were in control group (matching factors: age, gender, IBM). After 3 months treatment, the characteristics of PSG and respiratory machine wear condition were observated in four groups. RESULT The ESS score in CPAP and MOA group was significantly lower than that in other groups (P < 0.05); After 3 months treatment, the AHI, awake index (AI), and Ni (non-rapid eyemovement sleep1, N1) and N2 (non-rapid eye movement sleep2, N2) period of total sleep time (TST) percentage in CPAP assisted MOA group and CPAP group were significantly lower than that in MOA group and control group (P < 0.05); Sleep efficiency, ESS score, average blood oxygen saturation (MSaO₂), the lowest oxygen saturation (LSaO₂), slow wave sleep phases (SWS) and rapid eyemovement sleep (REM) accounted for the proportion of TST increased significantly (P < 0.05); There was no significant difference between CPAP assisted MOA group and CPAP group in AHI, MSaO₂, AI, sleep efficiency, N1, N2, SWS and REM percentage of TST and ESS score. The LSaO₂ and average machine time in CPAP assisted MOA group were significantly greater than that in CPAP group (P < 0.05), but 90% pressure and average air leakage were significantly lower in the CPAP group (P < 0.05) CONCLUSION: The curative effect of CPCR combined with modified oral appliance was better than CPCR or MOA alone in the treatment of severe OSAHS.
Continuous Positive Airway Pressure ; Humans ; Male ; Oximetry ; Sleep ; Sleep Apnea, Obstructive ; therapy

Objective:To study the anatomical correlation between dental arch and the volume of upper airway in patients with obstruc-tive sleep apnea hypoventilation syndrome(OSAHS). Methods: Dental arch architecture and upper airway volume were measured by cone beam CT(CBCT) in the subjects with OSAHS(n=22) and without OSAHS(n=19). The correlation between dental arch and the supper airway volume in OSAHS patients was analyzed. Results:The length of the upper dental arch and the height of palate in OSAHS patients were larger than those of the controls(All, P<0. 05). Cross-sectional area of nasopharynx and retropalatal and the total volume of upper airway were negatively correlated with the palatal height and upper dental arch length(P<0. 05), while positively correlated with upper dental arch of molar regions(P<0. 05). Conclusion:The abnormal shape of upper dental arch is related to the airway vol-ume of nasopharynx and retropalatal region in patients with OSAHS.

Through detailed investigation of the market circulation of Ligustici Rhizoma et Radix, at the same time, this article collected relevant articles, conducted comparative study on genuine and conventionally used Ligustici Rhizoma et Radix from the aspects of textual research, functions, chemical composition and pharmacological effect, and discussed the results of the study.

OBJECTIVE: To explore the changes of serum interleukin-6 (IL-6) level in patients with obstructive sleep apnea hypopnea syndrome (OSAHS) and OSAHS associated type 2 diabetes mellitus (T2DM) and their significance. METHOD: All observed subjects were divided into 3 groups: 20 cases of normal subjects, 35 cases of simple OSAHS patients, 48 cases of OSAHS associated T2DM patients, IL-6 concentrations of serum were measured by the enzyme-linked immunosorbent. RESULT: IL-6 level was higher in the group of OSAHS with T2DM than the group of OSAHS and the healthy control group (P < 0.05); IL-6 level was higher in the simple OSAHS group than the healthy controls. CONCLUSION IL-6 and other inflammatory factors may involved pathological physiological process in OSAHS patients sugar metabolic abnormalities; and is associated with the development of OSAHS associated with type 2 diabetes.
Case-Control Studies ; Diabetes Mellitus, Type 2 ; blood ; complications ; Humans ; Interleukin-6 ; blood ; Sleep Apnea, Obstructive ; blood ; complications

OBJECTIVE: To observe the clinical effect of nasal surgical expansion as basical surgical treatment of patients with OSAHS. METHOD: A total of 320 patients with OSAHS were retrospectively analyzed. The patient was diagnosed by PSG. The electronic nasopharyngolarygnoscope exam airway CT, and MRI were applied to determining the nasal plane block. According to the concrete reasons, the nasal endoscopic nasal septum corrective surgery and open surgery were carried out, respectively. Nasal sinus neoplasm resection of off shoring, inferior turbinate fracture surgery or inferior turbinate back-end 1/3 line expansion and low temperature plasma ablation of nasal surgery, respectively. Pittsburgh sleep quality index (PSQI), snore outcome survey (SOS), epworth sleepiness score (ESS), the lowest arterial oxygen saturation (LSaO2) and AHI, time and ratio of slow wave sleep (SWS) stage and rapid eye movement (REM) stage were applied to comparing the curative effect between pre-operation and post-operation periods. RESULT: Snoring, sleep apnea, subjective mental symptoms of all patients with OSAHS were improved after operation; PSQI, SOS and ESS score were improved compared to pretreatment (P < 0.05); according to the 2009 OSAHS diagnosis and curative effect evaluation standard, 38 cases cured, 189 cases had obvious effect, 93 cases effective, and the total effective rate was 100%; there was statistical difference between the pre-operative period and 6 months post-operative in PSQI, SOS and ESS, LSaO2, AHI and proportion of REM (P < 0.05); sleep structure was improved, time and proportion of SWS were increased after the operation (P < 0.05). CONCLUSION Solving the problem of nasal airway obstruction is the first step in surgical treatment of patients with OSAHS.
Endoscopy ; Humans ; Nasal Obstruction ; Nasal Septum ; surgery ; Nasal Surgical Procedures ; Oximetry ; Paranasal Sinus Neoplasms ; surgery ; Paranasal Sinuses ; pathology ; Reconstructive Surgical Procedures ; Retrospective Studies ; Sleep Apnea, Obstructive ; surgery ; Sleep Stages ; Sleep, REM ; Snoring ; Turbinates ; surgery