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Molecular Dynamic Study and Synthesis of 1H-benzo[d]imidazole-5-carboxamide Derivatives as Inhibitors for Yellow Fever and Zika Virus Replication h -苯并[d]咪唑-5-羧酰胺衍生物抑制黄热病和寨卡病毒复制的分子动力学研究及合成
Pub Date : 2020-12-01 DOI: 10.21608/aps.2020.34690.1036
M. Mitry, Amr M. El-Araby, J. Neyts, S. Kaptein, Rabah A T Serya, N. Samir
Flaviviridae family comprises the flavivirus genotype that represents a significant world health problem as it includes the Yellow fever virus (YFV) and Zika virus (ZIKV) which are responsible for large outbreaks and for which novel therapies are in urgent demand. The benzimidazole scaffold has been widely reported for its antiviral activity, and hence a new series of 1H-benzo[d]imidazole-5-carboxamide derivatives (VIIa-x, VIIIa-h & IXa, b) was designed, synthesized, and biologically evaluated for their antiviral activity. 5 Compounds (VIId, VIIe, VIIh, VIIn and VIIt) showed antiviral activity against YFV in the low micromolar range using the human hepatoma Huh-7 cells and Vero cells. One compound (VIId) exhibited activity on both YFV (EC50=1.7 ± 0.8µM) and ZIKV (EC50=4.5 ± 2.1µM). Molecular docking and molecular dynamics simulation studies were conducted to understand the SAR of newly synthesized compounds, to explore the potential target of compound VIId and to investigate the possible binding mode to its target.
黄病毒科包括黄病毒基因型,它代表着一个重大的世界卫生问题,因为它包括黄热病病毒(YFV)和寨卡病毒(ZIKV),这两种病毒是造成大规模疫情的原因,迫切需要新的治疗方法。苯并咪唑支架因其抗病毒活性已被广泛报道,因此设计、合成了一系列新的h -苯并[d]咪唑-5-羧基酰胺衍生物(VIIa-x, viia -h和IXa, b),并对其抗病毒活性进行了生物学评价。5个化合物(VIId, VIIe, vih, VIIn和VIIt)在低微摩尔范围内对人肝癌Huh-7细胞和Vero细胞表现出抗病毒活性。其中一个化合物(VIId)对YFV (EC50=1.7±0.8µM)和ZIKV (EC50=4.5±2.1µM)均有活性。通过分子对接和分子动力学模拟研究,了解新合成化合物的SAR,探索化合物VIId的潜在靶点,并研究其与靶点的可能结合模式。
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引用次数: 2
Optimization of Culture Media for Halocnemum strobilaceum Associated Endophytes Bioactivity 草芥内生菌生物活性培养基的优化研究
Pub Date : 2020-07-10 DOI: 10.21608/aps.2020.2004.1044
M. Abdelrazek, Ashaimaa Y. Moussa, Mohamed Elshanawany, A. Singab
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引用次数: 2
The potential use of Endostatin and Angiopoietin-2 as valuable biomarkers for the prediction of Diabetic Nephropathy in Type 2 Diabetes Mellitus 内皮抑素和血管生成素-2作为预测2型糖尿病肾病的有价值的生物标志物的潜在应用
Pub Date : 2019-06-01 DOI: 10.21608/aps.2019.16465.1009
M. Salem, Al-Aliaa M Sallam, E. Amer, H. El-Mesallamy
Diabetic Nephropathy (DN) is considered a serious capillary complication of diabetes mellitus (DM) which leads to end-stage renal disease. Endostatin (EST) is considered as collagen XVIII fragment formed during extracellular matrix remodeling (ECMR). EST acts as an anti-angiogenic factor. Angiopoietin-2 (Ang II) is a growth factor that increases in several conditions, such as hyperglycemia. The present study was to scrutinize the association of EST and Ang II serum levels with nephropathy in patients with type 2 diabetes mellitus (T2DM). A total of 30 healthy individuals (control) and 120 T2DM patients classified into 60 patients with microalbuminuria and 60 patients without microalbuminuria), aged 45-65 years were included. Fasting Plasma Glucose (FPG), HbA1C%, lipid profile, urinary albumin/creatinine ratio of 30-300 mg/g (UACR), serum urea and creatinine levels were assessed. Both EST and Ang II were measured using the ELISA technique. Ang II and EST levels were elevated in patients with T2DM groups compared with the healthy control group (P<0.001). EST and Ang II were significantly correlated to UACR (r= 0.753, P<0.001) (r= 0.685, P<0.001) and therefore indicate progress to DN. Circulating EST and Ang II were significantly associated with T2DM and predict progression of DN and therefore can be used as biomarkers for the prediction of DN in such a group of patients.
糖尿病肾病(DN)被认为是糖尿病(DM)的严重毛细血管并发症,可导致终末期肾脏疾病。内皮抑素(EST)被认为是在细胞外基质重塑(ECMR)过程中形成的胶原XVIII片段。EST是一种抗血管生成因子。血管生成素-2 (angii)是一种生长因子,在一些情况下,如高血糖,会增加。本研究旨在探讨EST和Ang II血清水平与2型糖尿病(T2DM)患者肾病的关系。本研究共纳入30例健康人(对照组)和120例T2DM患者,年龄45 ~ 65岁,分为微量白蛋白尿患者60例和无微量白蛋白尿患者60例。评估空腹血糖(FPG)、糖化血红蛋白(HbA1C) %、血脂、尿白蛋白/肌酐比值30-300 mg/g (UACR)、血清尿素和肌酐水平。采用ELISA技术检测EST和Ang II。与健康对照组相比,T2DM组Ang II和EST水平升高(P<0.001)。EST和Ang II与UACR显著相关(r= 0.753, P<0.001) (r= 0.685, P<0.001),提示DN进展。循环EST和Ang II与T2DM显著相关,可预测DN的进展,因此可作为这类患者预测DN的生物标志物。
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引用次数: 0
Non alcoholic fatty liver disease: pathogenesis, role of (TNF-α, IL-6) in hepatic inflammation and future potential nutraceutical treatment 非酒精性脂肪性肝病:发病机制,(TNF-α, IL-6)在肝脏炎症中的作用和未来潜在的营养治疗
Pub Date : 2019-06-01 DOI: 10.21608/aps.2019.17201.1012
Safaa A. Faheem, Noha M Saeed, R. N. El-Naga, S. Azab
Non-alcoholic fatty liver disease (NAFLD) is a pathological condition characterized by the accumulation of triglycerides (TGs) in the hepatocytes and has usually been associated with hyperlipidemia, obesity, and insulin resistance. Besides, it is a progressive condition that has become one of the most common liver disorder in developed countries and is usually accompanied by increased cardiovascular and land liver disease mortality. NAFLD is a spectrum of liver disorders, progressing from simple steatosis to non-alcoholic steatohepatitis which is characterized by inflammation and hepatocellular injury then fibrosis which finally results in cirrhosis and even hepatocellular cancer. However, the molecular mechanism contributing to NAFLD progression is not fully understood. Its pathogenesis has usually been recognized by the "double-insult" hypothesis. the "first insult" includes accumulation of TGs in the hepatocyte, followed by a "second insult" where inflammatory mediators convince hepatocellular injury, inflammation, and fibrosis. In NAFLD, insulin resistance initiates the hepatic steatosis by different mechanisms. Furthermore, it was shown that NAFLD is associated with an inhibition of fatty acid oxidation in the mitochondria and an increase in the release of very-low-density lipoproteins. This review discusses the pathophysiology of NAFLD and the role of insulin resistance, obesity and inflammatory markers in the initiation of NAFLD. in addition to the different Therapeutic approaches for NAFLD.
非酒精性脂肪性肝病(NAFLD)是一种以肝细胞中甘油三酯(tg)积累为特征的病理状况,通常与高脂血症、肥胖和胰岛素抵抗有关。此外,它是一种进行性疾病,已成为发达国家最常见的肝脏疾病之一,通常伴有心血管和陆地肝病死亡率增加。NAFLD是一系列肝脏疾病,从单纯脂肪变性发展到非酒精性脂肪性肝炎,其特征是炎症和肝细胞损伤,然后纤维化,最终导致肝硬化甚至肝细胞癌。然而,促进NAFLD进展的分子机制尚不完全清楚。其发病机制通常被认为是“双重侮辱”假说。“第一次损伤”包括肝细胞中tg的积累,随后是“第二次损伤”,炎症介质导致肝细胞损伤、炎症和纤维化。在NAFLD中,胰岛素抵抗通过不同的机制引发肝脏脂肪变性。此外,研究表明NAFLD与线粒体中脂肪酸氧化的抑制和极低密度脂蛋白释放的增加有关。本文综述了NAFLD的病理生理学以及胰岛素抵抗、肥胖和炎症标志物在NAFLD发病中的作用。除了NAFLD不同的治疗方法。
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引用次数: 1
An expert review on current approaches for endotoxin detection in various biological products 专家综述了目前各种生物制品中内毒素检测的方法
Pub Date : 2019-06-01 DOI: 10.21608/aps.2019.13058.1000
M. Elkhateeb, W. Elkhatib, M. Aboulwafa
Endotoxin is heat-stable lip polysaccharide (LPS) present in the outer membrane of the cell wall of Gram-negative bacteria. All parenteral preparations, as well as tissue implants, must be with no pyrogenic level of endotoxin or other related materials because of their associated health hazards and serious clinical effects. Accordingly, detection and limiting endotoxin in various pharmaceutical and biological products represent crucial issues. Rabbit pyrogen test (RPT) and Limulus Amebocyte Lysate (LAL) test are two methods used for endotoxin detection and quantification. Endotoxin detection is one of the most critical quality control tests required by the Food and Drug Administration (FDA) for all parenteral drugs in their final stage. Both in vitro LAL test and in vivo RPT can complement and reinforce each other but in certain cases, they are not interchangeable and they together provide a comprehensive picture of any potential contamination whether by endotoxin or any other pyrogenic matters.
内毒素是存在于革兰氏阴性菌细胞壁外膜的热稳定性唇多糖。所有肠外制剂以及组织植入物必须不含热原性内毒素或其他相关物质,因为它们会危害健康和产生严重的临床影响。因此,检测和限制各种药物和生物制品中的内毒素是至关重要的问题。兔热原试验(RPT)和鲎试剂(LAL)试验是内毒素检测和定量的两种方法。内毒素检测是美国食品和药物管理局(FDA)对所有肠外药物在其最后阶段所要求的最关键的质量控制测试之一。体外LAL测试和体内RPT都可以相互补充和加强,但在某些情况下,它们是不可互换的,它们一起提供了任何潜在污染的全面图像,无论是内毒素还是任何其他热原物质。
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引用次数: 3
Macrolide resistance pattern of staphylococci collected from hospitalized patients in Egypt 埃及住院患者葡萄球菌大环内酯类耐药模式分析
Pub Date : 2019-06-01 DOI: 10.21608/aps.2019.17921.1015
Amr S. Bishr, K. Aboshanab, M. Yassien, N. Hassouna
Macrolide resistance of staphylococci has risen dramatically in recent years generating a real challenge for their treatment as therapeutic options have become very limited. In this study, an antibiogram analysis of one hundred and fifty Staphylococcus sp. isolates collected from various clinical specimens, against erythromycin, azithromycin, spiramycin, and clindamycin was carried out. Out of the 150 collected Staphylococcus sp. isolates, 54 isolates (36%) showed resistance to two or more of the tested macrolides. Inducible macrolide, lincosamides and streptogramin type B resistance phenotype (iMLS) using D-test was identified in 15 of the resistant isolates (27.8%). Molecular detection of major genes coding for macrolide resistance, including erythromycin ribosomal methylase (ermA and ermC), and macrolide-streptogramin resistance gene (msrA) was carried out using PCR. It was found that 51.8, 37.1 and 11.1% of the resistant isolates carried one, two and three types of the resistance genes, respectively. However, ermC was the most frequently occurring gene (81.5%), followed by the msrA gene (42.6%), then the ermA gene (35.2%). In conclusion, the genotypic analysis revealed that the majority of the tested isolates harbored two or more macrolide resistance-coding genes where 36% displayed resistance to at least two of the most common macrolide antibiotics used in the treatment of such important pathogens particularly in patients exhibiting hypersensitivity to penicillins according to several international guidelines. Therefore, it is crucial to carry out more epidemiologic studies to clearly understand the problem of increasing macrolide resistance among Staphylococci and to implement new guidelines for the treatment of such important pathogens, particularly in Egypt.
近年来,葡萄球菌对大环内酯类药物的耐药性急剧上升,由于治疗选择非常有限,对其治疗构成了真正的挑战。本研究对从不同临床标本中采集的150株葡萄球菌进行了对红霉素、阿奇霉素、螺旋霉素和克林霉素的抗菌谱分析。在收集到的150株葡萄球菌分离株中,54株(36%)对两种或两种以上的大环内酯类耐药。经d检验,15株耐药菌株(27.8%)存在诱导型大环内酯类、林肯胺类和链霉素B型耐药表型(iMLS)。采用PCR技术检测大环内酯类耐药基因,包括红霉素核糖体甲基化酶(ermA)和ermC,以及大环内酯-链状gramin耐药基因(msrA)。结果显示,51.8%、37.1和11.1%的耐药菌株分别携带1、2和3种耐药基因。然而,ermC是最常见的基因(81.5%),其次是msrA基因(42.6%),然后是ermA基因(35.2%)。总之,基因型分析显示,大多数测试分离株含有两个或更多大环内酯类耐药编码基因,其中36%对至少两种最常见的大环内酯类抗生素耐药,这些抗生素用于治疗这些重要病原体,特别是根据一些国际指南,对青霉素过敏的患者。因此,开展更多的流行病学研究以清楚地了解葡萄球菌中大环内酯类药物耐药性增加的问题,并实施治疗这类重要病原体的新指南至关重要,特别是在埃及。
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引用次数: 2
Biological and phytochemical review on the genus Coccoloba (Polygonaceae) 球藻属植物生物学及化学研究进展
Pub Date : 2019-06-01 DOI: 10.21608/aps.2019.17343.1013
Fatma Abdel Hakim, Haidy A. Gad, R. Radwan, N. Ayoub, M. El‐Shazly
Polygonaceae is one of the largest medicinal plant families, vastly distributed worldwide, containing around 1,200 species from 48 genera. Most of the species are located in the northern temperate region, while the other species are allocated from the tropics to the arctic. The prime genera in Polygonaceae are Eriogonum which includes 240 species, Rumex with 200 species, Coccoloba with 120 species, Persicaria with 100 species, and Calligonum with 80 species. Coccoloba is one of the most interesting genera of the family Polygonaceae in terms of biological activities and secondary metabolites. Plants of this genus are used worldwide in traditional folk medicine. The review is a comprehensive literature survey on different Coccoloba species regarding their biological activities and their isolated phytochemicals. Different classes of secondary metabolites were isolated from this genus including flavonoids, phenolic acids, tannins, triterpenes, diterpenes, anthraquinones, isochromene, and volatile oils. Crude extracts and isolated compounds of various Coccoloba species displayed diversity in biological activities. Further investigations are required to explore new bioactive compounds and their pharmacological activities.
蓼科是最大的药用植物科之一,分布在世界各地,约有48属1200种。大多数物种分布在北温带地区,而其他物种分布在热带到北极。蓼科植物的主要属是蓼属(240种)、蓼属(200种)、蓼属(120种)、桃属(100种)和蓼属(80种)。可可属是蓼科植物中生物活性和次生代谢产物最有趣的属之一。该属植物在世界各地的传统民间医学中都有使用。本文对不同种类球藻的生物活性及其分离的植物化学物质进行了综述。从该属植物中分离出黄酮类、酚酸类、单宁类、三萜类、二萜类、蒽醌类、异色胺类和挥发油等次生代谢产物。不同种类球藻的粗提物和分离物在生物活性方面表现出多样性。需要进一步的研究来探索新的生物活性化合物及其药理活性。
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引用次数: 5
Detection of Medication Errors in Primary Care Units through Passive Voluntary Reporting Forms 通过被动自愿报告表发现基层医疗单位用药错误
Pub Date : 2019-06-01 DOI: 10.21608/aps.2019.45300
Rowan W. Ahmed, N. Sabri, M. E. Hamamsy, Amr A. Saad
The lack of a universally accepted terminology of what constitutes a Medication Error (ME), makes it difficult to report, detect, categorize and prevent MEs. Methodologically, there isn't a complete picture of the incidence and prevalence of MEs. The broad range of ME rates in literature reflects heterogeneity in the study designs and detection methods used. The current study aimed to detect MEs in reports received from Primary Care Units. A retrospective analysis was applied on such reports dated from March to November 2013 and some fatal cases are taken from 2014. All voluntary reports were included, excluded were errors not associated with drug use and pharmaceutical company reports. Eligible reports underwent assessment using predetermined criteria to pick up MEs. The criteria were applicable on 115 reports, in which MEs were detected. 60% (69/ 115) of ME cases were error cluster while 40% (46/115) were unknown due to either underreporting, lack of data or poor observation and correlation (p< 0.05). Only 7% (8/115) p<0.001 of the reports were pregnancy cases. Moreover, errors associated with vaccine use accounted for 7% (8/115) of the cases while 93% accounted for errors from other drug use at p<0.001. Long-term follow-up was needed but not done by the assessors in 41% (47 of 115) of ME cases at p-value=0.05. Attachments were provided with the reports in 9% (10 /115) of the cases while the majority 91% (105/115) were not (p<0.001). In conclusion, voluntary reporting is a major strategy to prevent MEs by learning from errors reported.
缺乏普遍接受的药物错误(ME)术语,使得难以报告,检测,分类和预防ME。从方法上讲,MEs的发病率和流行率并没有一个完整的图景。文献中ME率的广泛范围反映了研究设计和使用的检测方法的异质性。目前的研究旨在检测从初级保健单位收到的报告中的MEs。对2013年3月至11月的此类报告进行了回顾性分析,其中一些死亡病例来自2014年。纳入所有自愿报告,排除与药物使用和制药公司报告无关的错误。使用预先确定的标准对合格的报告进行评估,以挑选MEs。这些标准适用于115份报告,其中发现了微型企业。60%(69/ 115)的ME病例为错误聚类,40%(46/115)的ME病例因少报、缺乏资料或观察及相关性差而未知(p< 0.05)。仅7% (8/115)p<0.001为妊娠病例。此外,与疫苗使用相关的错误占7%(8/115),而与其他药物使用相关的错误占93% (p<0.001)。有41%(115例中的47例)的ME病例需要长期随访,但评估人员没有进行随访(p值=0.05)。9%(10 /115)的病例报告有附件,91%(105/115)的病例报告没有附件(p<0.001)。总而言之,自愿报告是通过从报告的错误中学习来防止MEs的主要策略。
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引用次数: 1
Wogonin a Promising Component of Scutellaria baicalensis: A Review on its Chemistry, Pharmacokinetics and Biological Activities 黄芩中有潜力的化学成分乌根苷:化学、药代动力学及生物活性研究进展
Pub Date : 2019-06-01 DOI: 10.21608/aps.2019.18854.1016
M. Hassanin, M. Tolba, Marianne G. Tadros, M. Elmazar, A. Singab
Scutellaria baicalensis Georgi (Huang-Qin or Chinese skullcap) is a native medicinal plant in China that is commonly used for the treatment of seizures, viral infections, and cancer. The numerous pharmacodynamics of this plant is referred to as its rich content of flavones (baicalin and wogonoside) and their corresponding aglycones (baicalein and wogonin). Wogonin is one of the most extensively investigated active components of Scutellaria baicalensis. A multitude of preclinical studies indicated that wogonin possesses many pharmacological activities including anti-inflammatory, antioxidant, cytotoxic, neuroprotective, antidiabetic and antiviral effects. However, studies regarding the toxicity profile of wogonin are lacking. This review focuses on the recently published data regarding the chemistry and the pharmacokinetic profile of wogonin. Moreover, it highlights some of wogonin's well documented biological activities such as cytotoxic, neuroprotective, antidiabetic and antiviral activities. The information in this review encourages further investigations to elucidate the wogonin's full toxicological profile for verification of the safety of wogonin and the determination of the maximal tolerable dose (MTD) to be able to extrapolate wogonin's benefits to the clinical setting.
黄芩(Scutellaria baicalensis Georgi)是中国的一种天然药用植物,通常用于治疗癫痫、病毒感染和癌症。该植物的众多药效学是指其丰富的黄酮(黄芩苷和枸杞苷)及其相应的苷元(黄芩苷和枸杞苷)含量。黄芩苷是黄芩中研究最广泛的活性成分之一。大量临床前研究表明,枸杞子素具有抗炎、抗氧化、细胞毒、神经保护、抗糖尿病和抗病毒等药理作用。然而,关于沃戈宁毒性的研究还很缺乏。本文综述了最近发表的有关沃戈甙的化学和药代动力学方面的研究数据。此外,它还强调了一些已被证明的生物活性,如细胞毒性、神经保护、抗糖尿病和抗病毒活性。本综述中的信息鼓励进一步研究阐明沃戈宁的完整毒理学特征,以验证沃戈宁的安全性,并确定最大耐受剂量(MTD),从而能够推断沃戈宁对临床环境的益处。
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引用次数: 5
Implications of Direct Healthcare Professional Communication in Egypt: barriers and preferences of Health Care Professionals 直接医疗保健专业沟通的含义在埃及:障碍和卫生保健专业人员的偏好
Pub Date : 2019-06-01 DOI: 10.21608/aps.2019.15297.1007
Mai A. Faied, L. E. Wakeel, Amr A. Saad, N. Sabri
Direct Healthcare Professional Communication (DHPC) is essentially distributed for fast communication of new serious drug safety information to healthcare professionals (HCPs). However, the use of this tool concerning the knowledge and preferences of HCPs has never been evaluated in Egypt. This study aimed to evaluate the HCPs' knowledge, preferences, and barriers to the use of DHPC in Egypt. A cross-sectional study of a random sample of 254 HCPs surveyed via face-to-face interviews to assess the Egyptian HCPs' awareness of DHPC, the preferences, and barriers that affect its use. Among the 297 approached HCPs, only 254 accepted to participate with a response rate of 85.5%, including (50% internists, 22.83% cardiologists, 11.02% neurologists, 11.02% pediatricians, and 5.12% from other specialties). Most HCPs were not familiar with DHPC (N= 254, 61.8%). One-third of the visited HCPs who were aware of concerned drugs' risk(s) got their information from DHPC (N= 149, 36.9%). HCPs preference for communication channel was highest for meetings (N= 254, 65.7%) and least for newsletters (N= 254, 28%). HCPs reported barriers to reading DHPC included; busy schedule (N= 254, 47.6%), mistrusted source (N= 254, 24.4%), view as a marketing tool (N= 254, 21.7%), invaluable information (N= 254, 9.8%) and disbelief (N= 254, 7.5%). The DHPC did not reach the target HCPs most of the time, but when received, it was successful in conveying the required message to the target HCPs. Multiple barriers were identified that negatively impacted the success of DHPC. It is recommended to use other electronic communication methods to enhance the reachability of the current method (DHPC).
直接医疗保健专业人员通信(DHPC)主要用于向医疗保健专业人员(HCPs)快速传播新的严重药物安全信息。然而,埃及从未对这一工具的使用情况进行过评估,该工具涉及卫生保健提供者的知识和偏好。本研究旨在评估埃及HCPs的知识、偏好和使用DHPC的障碍。通过面对面访谈对254名医务人员随机抽样进行横断面研究,以评估埃及医务人员对DHPC的认识、偏好和影响其使用的障碍。在297名接触的HCPs中,只有254名接受参与,反应率为85.5%,其中内科医生占50%,心内科医生占22.83%,神经科医生占11.02%,儿科医生占11.02%,其他专科占5.12%。大多数HCPs不熟悉DHPC (N= 254, 61.8%)。三分之一的受访医务人员通过DHPC了解相关药品风险(N= 149, 36.9%)。HCPs对沟通渠道的偏好最高的是会议(N= 254, 65.7%),最低的是通讯(N= 254, 28%)。HCPs报告的阅读DHPC的障碍包括;繁忙的日程安排(N= 254, 47.6%)、不可信的来源(N= 254, 24.4%)、将其视为营销工具(N= 254, 21.7%)、宝贵的信息(N= 254, 9.8%)和不相信(N= 254, 7.5%)。DHPC在大多数情况下不会到达目标hcp,但当收到时,它会成功地将所需的消息传递给目标hcp。多重障碍被确定为负面影响DHPC的成功。建议使用其他电子通信方法来增强当前方法(DHPC)的可达性。
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引用次数: 1
期刊
Archives of Pharmaceutical Sciences Ain Shams University
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