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991.
Rachel Morrison Chris Gardiner Antonio Evidente Robert Kiss Helen Townley 《Pharmaceutical research》2014,31(10):2904-2917
Purpose
To design and synthesize chemoembolization particles for the delivery of Ophiobolin A (OphA), a promising fungal-derived chemotherapeutic, directly at the tumour location. To investigate cell death mechanism of OphA on a Rhabdomyosarcoma cancer (RD) cell line. Rhabdomyosarcoma is the most common soft tissue sarcoma in children; with a 5-year survival rate of between 30 and 65%.Methods
Multimodal chemoembolization particles were prepared by sintering mesoporous silica nanoparticles, prepared by the sol-gel method, onto the surface of polystyrene microspheres, prepared by suspension copolymerisation. The chemoembolization particles were subsequently loaded with OphA. The effects of OphA in vitro were characterised by flow cytometry and nanoparticle tracking analysis (NanoSight).Results
High loading of OphA onto the chemoembolization particles was achieved. The subsequent release of OphA onto RD cells in culture showed a 70% reduction in cell viability. OphA caused RD cells to round up and their membrane to bleb and caused cell death via apoptosis. OphA caused both an increase in the number of microvesicles produced and an increase in DNA content within these microvesicles.Conclusions
The prepared chemoembolization particles showed good efficacy against RD cells in culture. 相似文献992.
社会、经济与环境因素对老年健康和死亡的影响——基于中国22省份的抽样调查 总被引:1,自引:0,他引:1
基于全国22省市886个县15 973位老人2002—2005年跟踪调查数据,本文应用多水平多元logit模型,对社会、经济和环境因素对老年健康和死亡的影响进行了分析。结果表明,控制了个人层面相关变量后,空气污染显著增加了老人ADL(日常生活自理能力)残障、认知功能差与累计健康亏损指数上升的可能性。降雨量的增加则显著降低了老人ADL残障和认知功能差的风险。极低的气温显著增加了老人ADL残障的风险与死亡风险,而极高的气温显著增加了老人认知功能差和累计健康亏损指数上升的可能性。居住在山区的老人ADL残障风险较低,累计健康亏损指数亦较低。此外,人均GDP、15~64岁人口的劳动参与率以及文盲率对中国老年人的生理健康、心理健康、整体健康水平以及死亡风险有显著的、作用方向不同的影响。最后,得出如下结论:保护自然环境、改善社会经济状况的干预措施将有利于改善老人健康、降低老人死亡风险。 相似文献
993.
Background
There has never been a single case report of any parasitic zoonosis in Ile-Ife while just a case of human Acanthocephalan infection in Nigeria is available.Methods
Fifty (house–rats) Rattus rattus (Linnaeus, 1758) were caught in houses and raw food sellers’ stalls in a market in Ile-Ife. A caught rat was removed from the cage and sacrificed by cervical jerking. A rat was weighed, measured, quickly following which thick and thin blood films on microscope slides were made from blood collected from the tail vein. The rat was examined for ectoparasites then dissected to check for endoparasites.Results
Two ectoparasites (Xenopsylla cheopis and Laelaptid mite) were recovered from 19 (38.0%) of the rats. Five genera of helminthes (Moniliformis, Hymenolepis, Taenia, Trichuris and Trichinella) were recovered from 29 (58.0%) of the rats while seven genera of protozoa organisms (Amoeba, Dientamoeba, Entamoeba, Retortamonas, Trichomonas, Chilomastix and Trypanosoma) were recovered from 48 (96.0%) of them. There was no correlation (Spearman’s correlation coefficient = -0.111) between the weight of the individual rat and the total number of alimentary canal acquired parasites.Conclusion
In relation to human health, implications of the rats serving as reservoir hosts for the different pathogens are highlighted. In view of the possibility of unexpected zoonosis arising from the parasites found in the peridomestic rats in this investigation and others not found, and in view of the difficulties that may be associated with diagnosing such ailment, especially by a clinician who trained locally, this report should be like raising awareness to these salient facts. 相似文献994.
Camila R Correa C-Y. Oliver Chen Giancarlo Aldini Helen Rasmussen Carlos F Ronchi Carolina Berchieri-Ronchi Soo-Muk Cho Jeffrey B Blumberg Kyung-Jin Yeum 《Nutrition Research And Practice》2014,8(5):550-557
BACKGROUND/OBJECTIVES
Angelica keiskei is a green leafy vegetable rich in plant pigment phytochemicals such as flavonoids and carotenoids. This study examined bioavailability of flavonoids and carotenoids in Angelica keiskei and the alteration of the antioxidant performance in vivo.SUBJECTS AND MATERIALS
Absorption kinetics of phytochemicals in Angelica keiskei were determined in healthy older adults (> 60 y, n = 5) and subjects with metabolic syndrome (n = 5). Subjects consumed 5 g dry Angelica keiskei powder encapsulated in gelatin capsules with a low flavonoid and carotenoid liquid meal. Plasma samples were collected at baseline, 0.5, 1, 2, 3, 4, 5, 6, 7, and 8 h. Samples were analyzed for flavonoids and carotenoids using HPLC systems with electrochemical and UV detection, respectively, and for total antioxidant performance by fluorometry.RESULTS
After ingestion of Angelica keiskei increases in plasma quercetin concentrations were observed at 1-3 and 6-8 hr in the healthy group and at all time points in the metabolic syndrome group compared to baseline (P < 0.05). Plasma lutein concentrations were significantly elevated in both the healthy and metabolic syndrome groups at 8 hr (P < 0.05). Significant increases in total antioxidant performance were also observed in both the healthy and the metabolic syndrome groups compared to baseline (P < 0.05).CONCLUSIONS
Findings of this study clearly demonstrate the bioavailability of phytonutrients of Angelica keiskei and their ability to increase antioxidant status in humans. 相似文献995.
996.
997.
Jose Paulo P. Lorenzo Ma. Hanna Monica Z. Sollano Evelyn O. Salido Julie Li-Yu Sandra A. Tankeh-Torres Ida Ayu Ratih Wulansari Manuaba Md Mujibur Rahman Binoy J. Paul Mo Yin Mok Monika De Silva Prasanta Padhan Ai Lee Lim Melvin Marcial Jennifer Jeanne Vicera Syed Atiqul Haq Sami Salman Chiranthi K. Liyanage Helen I. Keen Cheng Yew Kuang James Cheng-Chung Wei Rakhma Yanti Hellmi Charlie E. Chan Worawit Louthrenoo 《International journal of rheumatic diseases》2022,25(1):7-20
998.
ObjectivesTo explore the patients’ experiences of participating in an exercise group following anterior cruciate ligament reconstruction (ACLR).DesignHermaneutic phenomenological qualitative study of two focus groups.SettingOutpatient care, private rehabilitation centre.ParticipantsNine adults who had participated in an exercise group led by a physiotherapist following ACLR.ResultsThree major themes emerged from the data: psychosocial factors, physical outcomes and identity of the exercise group. The most significant perception of engaging in an exercise group following ACLR was its influence on psychosocial factors, especially motivation, self-confidence and social support. The group influenced the participants’ motivation, enjoyment and commitment to exercise during their rehabilitation. Social support, self-confidence and reassurance were mostly gained. The participants taking part in sport experienced the ACLR group as a substitute for sport trainings. The group was perceived to help enhance speed of recovery and facilitate the return to normal life, especially for participants with lower reported motivation and adherence to home-exercises. The authors interpreted that the subjective physical outcomes’ improvements described by all the participants was potentially an increased level of self-efficacy.The challenging role of the physiotherapist was highlighted as well as the promotion of shared accountability between patients and the group’s leader. The exercise group’s identity was questioned within the rehabilitation process, and the need for more knowledge of its existence in order to promote exercise group therapy was suggested.ConclusionParticipating in an exercise group therapy influences psychosocial factors such as motivation, self-confidence, social support, potentially self-efficacy and helps enhance a faster successful recovery following ACLR. Our findings indicate that participants with a lower reported adherence to home-exercises may especially benefit from it. 相似文献
999.
1000.
Vivian F. Derpa Raphael Koch Mareike Möllers Kerstin Hammer Kathrin Oelmeier de Murcia Helen A. Köster Maria K. Falkenberg Janina Braun Walter Klockenbusch Ralf Schmitz 《Ultrasound in medicine & biology》2019,45(1):233-245
The aim of our prospective pilot study with exploratory analysis was to compare longitudinal and apical foetal speckle tracking echocardiography (STE) using tissue motion annular displacement (TMAD) and segmental longitudinal strain (SLS). We compared two different STE quantification tools in a longitudinal and apical four-chamber view in 57 normal foetuses between 20 and 40 wk of gestation. Myocardial mechanical dyssynchrony and strain were assessed using offline quantification software (QLab Version 10.3, Philips Medical Systems, Andover, MA, USA). We compared the dyssynchrony measurements with TMAD and SLS in longitudinal and apical four-chamber views. Furthermore, we examined the segmental strain values of both ventricles with SLS and compared the differences between longitudinal and apical measurements. Dyssynchrony measurements with TMAD and SLS and strain measurements with SLS were feasible in all cases. In the apical view, the dyssynchrony measurements with TMAD were systematically greater than those achieved with SLS (p < 0.001). For the longitudinal view, no differences were observed between tools (p?=?0.153). The application of SLS provided similar results for dyssynchrony in both views (intra-class correlation coefficient [ICC]?=?0.281, p?=?0.623), but the strain measurements in the left and right ventricles differed significantly between views (ICC?=?–0.082, p?=?0.011, and ICC?=?–0.061, p?=?0.024, respectively). For TMAD, we found large differences in the dyssynchrony values between longitudinal and apical assessment (ICC?=?–0.060, p?=?0.03). Furthermore, TMAD exhibited reduced accuracy in the system's automatic tracking algorithm, limiting the data quality. The dyssynchrony assessment is affected less by the foetal position in SLS than in TMAD. The strain readings in SLS varied depending on the view in which they were assessed. The application of TMAD cannot be recommended for foetal STE. 相似文献