高效液相色谱法同时测定脂溢酊3号中2组分的含量

目的：研究HPLC法测定脂溢酊3号中氯霉素和水杨的酸的含量的方法及条件,方法：采用C18色谱柱,流动相为甲醇－0.025mol.L^-1磷酸二氢钠溶液（40：60,v/v）,检测波长为278nm,结果：氯霉素的线性范围为30－70ug.ml^-1,r=0.9999,回收率100．65％,RSD＝0．73％,水杨酸的线性范围为60－140ug.ml^-1,r=0.9996,回收率100．40％,RSD＝0．71％,结论：该方法简,准确,可同时测定溶液中氯霉素和水杨酸的含量。     

HPLC法同时测定痤疮擦剂中3种组份的含量

目的：研究测定痤疮擦中甲硝唑,水杨酸及氯霉素的含量,方法：采用反相高效应相法,外标法,shin-packCLC-ODS柱,流动相为甲醇－水（50：50）,检测波长280nm,结果：一次进样即可完成3种不同组分的含量分析,线性范围分别是：甲硝唑20.28-104.4ug.ml^-1,r=0.9999,水杨酸80．2－401ug.ml^-1,r=0.9998,氯霉素40－200ug.ml^-1,r=0.9998,平均回收率,甲硝唑96.05%,RSD=1.45％,RSD=0.98%,氯霉素97．34％,RSD＝1．20％,结论：本法快速,筒便,准确,分离度好,可用于该制剂中3种成分的含量测定。     

高效液相色谱法测定大鼠血清中艾司洛尔的含量

目的：建立高效液相色谱法（HPLC）测定因清中艾司洛尔浓度的方法。方法：以甲醇－冰醋酸－0．2％醋酸钠（60：1：40）为流动相，流速1．0ml/min，检测波长为280nm。结果：在10－600ug/ml^-1范围内样品色谱峰高与血清药物浓度呈良好的线性关系，r=0.9998，日内及日内RSD分别测得为3．05％,4．43％，平均加样回收率为100．45％，血清中药物最低检测浓度为13．3ug.L^-1。结论：本方法适于艾司洛尔的血药浓度监测。     

西咪替丁水分散片的制备及含量测定

目的：制备西咪替丁水分散片并进行含量测定以控制质量，方法：首先对外方中崩解剂与溶胀性辅助料的用量和原因进行考察，确定最优处方，制备西咪替丁水分散片，并建立含量测定方法，结果：西咪替丁浓度在2．0－16．0ug.ml^-1范围内，线性关系良好，回归方程为：A=0.07675C-0.9714*10^3,r=0.9998,回收率为99．81％，RSD为0．29％，n=6，结论：西咪替丁水分散片，组方合理，质量可控，适用于医院制剂。     

HPLC法测定复方替硝唑漱口液中替硝唑和呋喃西林的含量

目的：建立测定复方替硝唑嗽口液中替硝唑，呋喃西林含量的高效液相色谱法，方法：采用反相ODS色谱柱，水－乙腈－冰醋酸（85：15：0．1）为流动相，检测波长为317nm，结果：替硝唑和呋喃西林的线性范围分别为50－350ug.ml^-1(r=0.9996),10-70(ug.ml^-1)(r=0.9997)，加可咽收率分别为100．56％，RSD＝0.69%,100.64%,RSD=0.79%,日内RSD为0.12%-1.35%和0.66%-1.45%，n=6,日间RSD为0.28%-1.39%，和0.18%-1.23%,n=5，结论：HPLC法可用于复方替硝唑漱口液的含量定，方法准确，灵敏，专属性强。     

紫外分光光度法测定注射用甘氨双唑钠的含量

目的：测定注射用甘氨双唑钠中的甘氨双唑钠含量。方法：采用紫外分光光度法,检测波长为276nm。结果：甘氨双唑钠在5－30ug/ml^-1(r=0.9999)范围内,吸收度值与浓度呈良好的线性关系,平均回收率为99．55％,RSD为0．69％（n=6)。结论：方法稳定,简便易行,快速,准确,可做为该制剂的质量控制方法。     

分光光度法测定复方醋酸曲安奈德搽剂中酯酸曲安奈德的含量

目的：测定复方醋酸曲安奈德搽剂中醋酸曲安奈德的含量，方法：采用分光光度法，测定波长为485nm，结果：醋酸曲安奈德在4．22－33.74ug.ml^-1(r=0.9998)范围内，吸收度值与其浓廑良好的线性关系，方法平均回收率为99．82％，RSD为0．84％，（n=6)。结论：方法简便易行，快速，准确，可做为该制剂的质量控制方法。     

RP-HPLC测定万通筋骨片中马兜铃酸A的含量

目的建立反相高效液相色谱法测定万通筋骨片中马兜铃酸A的含量。方法色谱柱：Kromasil C18（250mm×4.6mm,5μm）;流动相：甲醇-0.5%冰醋酸溶液（60∶40）;检测波长：250nm。结果马兜铃酸A在0.0808～0.4040μg·ml^-1范围内线性关系良好,回归方程：A=129913C＋68835,r=0.9999;平均回收率为99.1%,RSD为1.14%。结论本方法简便、灵敏、准确。     

HPLC法测定滴鼻灵中地塞米松磷酸钠的含量

目的：建立HPLC法测定滴鼻灵中地塞米松磷酸钠的含量,方法：以十八烷基硅烷键合硅胶为填充剂,0．01mol.L^-1磷酸二氢钾（KH2PO4）－甲醇－磷酸（48：52：0．4）为流动相,检测波长240nm。结果：地塞米松磷酸钠在1．26－10．08ug/ml^-1(r=0.9999)范围内线性关系良好。平均回收率为99．16％,RSD为0．65％（n=6)。结论：本方法快速,准确,可用于测定滴鼻灵中地塞米松磷酸钠的含量。     

复方氯霉素醇溶液含量测定方法的改进

目的 建立复方氯霉素醇溶液中水杨酸和氯霉素的含量测定方法.方法 采用反相高效液相色谱法,色谱柱：C18（250mm×4.6mm,5μm）;流动相：甲醇-水-冰醋酸（50∶50∶0.1）;流速：0.8ml/min;检测波长：295nm;柱温：30℃.结果 水杨酸在0.253 5～2.535 0 μg·ml^-1范围内呈良好线性关系,r=0.999 9,平均回收率99.75%,RSD为1.3%;氯霉素在0.255 0～2.550 0 μg·ml^-1范围内呈良好线性关系,r=0.999 9,平均回收率99.18%,RSD为1.3%.结论 方法简便、准确,重现性好.     

Physiologic and pathologic calcifications and ossifications in the face and neck

The aim was to give a systematic presentation of physiologic and pathologic calcifications and ossifications in the face and neck with a special emphasis on clinical relevance. In a sometimes subacute setting one should recognize specific calcifications which often lead to important diagnoses such as fungal sinusitis or sclerosing labyrinthitis. In a more chronic situation intraocular calcifications in small children are pathognomonic for retinoblastoma. Juxtatumoral sclerosis of the laryngeal cartilage in laryngopharyngeal carcinoma is usually caused by tumor infiltration of the cartilage resulting in a higher tumor stage and, this way, has a major impact on the therapeutical strategy. Calcified lymph nodes are mainly unspecific but can be the result of tuberculosis or metastases of thyroid cancer. Cross-sectional imaging methods, most of all computed tomography, are ideally suited to reveal head and neck calcifications and ossifications, especially those which are clinically relevant.     

Head and neck infection and inflammation

This article discusses the imaging manifestations of infectious and inflammatory conditions of the head and neck. Special attention is paid to the sites, routes of spread, and complications of neck infections. Because the clinical signs and symptoms and the complications of these conditions are often determined by the precise anatomic site involved, anatomic considerations are stressed. Familiarity with the fascial layers, spaces of the neck, and the contents of each space is helpful for this discussion. The fascial layers of the neck are important barriers to infection, and once infection is established, the fascial layers play a part in directing its spread.     

幽门螺杆菌分泌与重组表达的VacA蛋白的分离纯化及其致细胞空泡效应与凋亡的对比研究

目的：分离纯化幽门螺杆菌分泌和重组表达的细胞空泡毒素抗原（ VacA）蛋白,并评价其致细胞空泡效应及致细胞凋亡效应。方法分别从幽门螺杆菌ATCC26695菌株培养上清和重组表达VacA蛋白的pQE30-VacA-E．coliM15基因工程菌中分离纯化VacA蛋白,经酸化后,以不同终浓度（5,10 ng／ml）分别与人胃腺癌AGS细胞共孵24 h,观察致空泡效应,并通过流式细胞术检测细胞凋亡。结果成功分离纯化出幽门螺杆菌分泌和重组表达的VacA蛋白;幽门螺杆菌分泌的VacA蛋白能显著引起AGS细胞的空泡样改变及凋亡（P＜0．01）,而重组表达的VacA蛋白致细胞空泡样改变及凋亡不显著（ P＞0．05）。结论幽门螺杆菌分泌的VacA蛋白有良好的空泡毒性及致凋亡效应,而重组表达的VacA蛋白无致空泡及凋亡效应,幽门螺杆菌分泌的VacA蛋白可用于VacA作用机制的研究。     

化学和生物学融合对国际武器公约履约的影响

化学武器公约（ CWC）和生物武器公约（ BWC）是为禁止生产、发展、储存和使用化学武器和生物武器而制定的国际公约。近年来,科学技术快速发展,知识交叉渗透,学科之间出现整合和融合,促进了科技进步和经济发展。其中化学和生物学融合在有力促进制药、健康卫生、绿色化学和环境保护等产业进步的同时,也对化学和生物武器公约的履约产生了重要的影响。该文综述了与化学武器和生物武器公约相关的化学和生物学融合进展,并分析其对公约履约的影响。     

Oxygen uptake and ventilation during rowing and running in females and males

This study evaluated if the ventilatory response to exercise is impaired by the cramp position of rowing. Maximal oxygen uptake (VO2max), maximal expiratory volume (VEmax), and maximal heart rate (HRmax) during rowing and running were compared in 55 males (age, mean +/- SD, 21 +/- 3 years; height 176 +/- 5 cm; body mass 72 +/- 6 kg) and 18 females (age 20 +/- 2 years; height 164 +/- 5 cm; body mass 61 +/- 4 kg). VEmax was larger during rowing than during running (males, 157 +/- 16 vs. 147 +/- 13 L min(-1); 114 +/- 9 vs. 105 +/- 11 L min(-1), P<0.01). Also VO2max was larger during rowing than during running (males, 4.5 +/- 0.5 vs. 4.3 +/- 0.4 L min(-1); females, 3.3 +/- 0.4 vs. 3.2 +/- 0.4 L min(-1), P<0.01). However, HRmax was lower during rowing than during running (males, 194 +/- 8 vs. 198 +/- 11 beats min(-1); females, 192 +/- 6 vs. 196 +/- 8 beats min(-1), P<0.05). VEmax was correlated to body mass and fat-free mass, as was VO2max. Thus, the oxygen pulse (VO2max/HRmax) was larger during rowing than during running, while the ventilatory equivalent for oxygen (VEmax/VO2max) was similar. We showed that bending the body during rowing does not seem to impair ventilation either in males or in females. The results indicate that VEmax and VO2max relate to body size and fat-free mass for both females and males. The findings indicate that the involvement of more muscles, the entrainment, and the body position during rowing facilitates ventilation and venous return and lowers maximal heart rate.     

Coracoclavicular and coracoacromial ligament calcification and ossification

Thirty-six patients with calcification or ossification at or around the coracoclavicular and coracoacromial regions were analyzed with regard to type, location, and configuration of the deposits and related clinical history. Calcification or ossification in the coracoclavicular region resulted largely from trauma (36%) or renal failure (28%). Trauma patients may develop punctate calcification or ossification but do not develop the tumoral type of calcification. About 5% of the renal failure patients had coracoclavicular ligament calcifications, one-half of which were of the tumoral type. Renal failure patients may have punctate or tumoral calcifications but do not develop ossification.     

CLIP相关技术的研究进展

在真核生物基因表达的转录后调节中,RNA结合蛋白（ RBP）起着关键作用,很多RBP的异常与人类疾病的发生密切相关。自2000年的RNA免疫沉淀和芯片分析方法（ RNA immunoprecipitation with differential display or microarray analysis , RIP-ChIP）出现以来,人们开始就RBP与RNA相互作用进行了系统而广泛的研究。经过改良和发展,基于体内实时紫外交联免疫沉淀法（ ultraviolet crosslinking and immunoprecipitation , CLIP ）、交联免疫沉淀cDNA文库高通量测序法（ high-throughput sequencing of CLIP cDNA library , HITS-CLIP）、光催化核糖核苷增强交联和免疫沉淀法（ photoactivatable-ribonucleoside-enhanced crosslinking and immunprecipitation , PAR-CLIP）以及提高个别核苷酸分辨率交联和免疫共沉淀法（ individual nucleotide resolution CLIP , iCLIP）等RIP-ChIP衍生方法相继产生,使用这些方法,可以解析RBP的RNA识别特异性,而且通过与高通量测序技术结合,可以实现转录组尺度的RBP的靶序列的鉴定,分辨率也得到极大提高。该文就RNA与蛋白的相互作用的基本原理及其研究进展、相关技术存在的问题以及发展趋势进行简要综述。     

Cross-sectional and longitudinal comparisons of self-reported and device-assessed physical activity and sedentary behaviour

ObjectivesTo examine the longitudinal associations and differences between self-reported and device-assessed physical activity (PA) and sedentary behaviour (SB), using a multifaceted statistical approach.DesignLongitudinal measurement burst.MethodsIn total, 52 university students (78% female) aged 18–38 years (mean = 21.94 ± 4.57 years) participated. The study consisted of three blocks of six days of measurement, during which participants wore an accelerometer on their wrist for the entire block, and self-reported their PA over the 6 days at the end of each block.ResultsMeaningful latent differences between methods were observed for moderate PA and SB across all three assessment periods, such that participants underreported the time spent in each activity. Bland–Altman plots revealed a positive mean difference for vigorous PA, with over-reporting increasing as mean levels increased. Negative mean differences were observed for all other intensities. Underreporting of moderate PA increased as the mean level increased, whereas for light PA and SB, underreporting decreased at high levels. Repeated measures correlations revealed a meaningful association for vigorous PA only, suggesting that as self-reported minutes increase so too do device-measured minutes.ConclusionsWe found evidence of cross-sectional and longitudinal differences and weak associations between self-reported and device-assessed PA and SB. Future work is needed to enhance the quality of self-reported methods to assess PA and SB (e.g., face and content validity), and consider improvements to the processing of device-based data.     

Old and dangerous: Prison and dementia

Older prisoners are the fastest growing group of prisoners in many countries. The purpose of this study is to explore the phenomenon of detention of persons suffering from dementia. Medline searches were conducted for relevant articles, chapters and books published until August 2016. Search terms included dementia, elderly, prison and criminal. Publications found through this indexed search were reviewed for further relevant references. As results, there is a lack of data about elderly with dementia in prisons. Given the rise in the average age, it is reasonable to hypothesize that the number of older prisoners is growing. Moreover, some elderly are imprisoned with a concomitant cognitive impairment or psychiatric disorder while others will develop such diseases once incarcerated. At the present time, legal and social systems seem unprepared to handle the phenomenon of dementia in prison. As proposal, health assessments for older first time offenders should become a practice inside the correctional facilities and include an evaluation for specific health issues, such as psychiatric comorbidity and cognitive impairment.