biological

Biological
  • 文章类型: English Abstract
    Given the ever-increasing number of approved therapies for the treatment of psoriasis (PsO) and psoriatic arthritis (PsA), head-to-head (H2H) comparative studies are essential. These are aimed primarily at a comparative analysis of treatment effectiveness. In both PsO and PsA, biological disease-modifying antirheumatic drugs (bDMARD) have been shown to be superior to conventional therapies in H2H studies. In PsO interleukin 17 (IL-17) and IL-23 inhibitors proved superiority compared to tumor necrosis factor (TNF) inhibitors (etanercept and adalimumab) in several studies. Ustekinumab was more effective than etanercept, but less effective than IL-17 and IL-23 inhibitors. Only a few H2H studies have been published on the treatment of PsA. In the Spirit H2H study ixekizumab was superior to adalimumab using a combined endpoint of arthritis and psoriasis response (ACR-50 and PASI-100). When looking at arthritic symptoms only (ACR-20), secukinumab was not significantly superior to adalimumab in the EXCEED study but was superior in terms of the effect on skin involvement (PASI90). Other H2H studies focused on the treatment of enthesitis (ECLIPSA study), the efficacy of Janus kinase (JAK) inhibition (SELECT-PSA-1) or the additional administration of methotrexate to bDMARD treatment (MUST study). The H2H data have been incorporated into the treatment guidelines and have led to IL-17 and IL-23 inhibition being preferred over TNF inhibition in cases of relevant skin involvement in PsA.
    UNASSIGNED: Angesichts einer immer größeren Auswahl zugelassener Therapien zur Behandlung der Psoriasis (PsO) und Psoriasisarthritis (PsA) sind direkte Vergleichsstudien unerlässlich. Diese zielen insbesondere auf eine vergleichende Analyse der therapeutischen Wirksamkeit ab. Sowohl bei der PsO als auch der PsA haben sich in Head-to-Head-Studien (H2H) biologische krankheitsmodifizierende antirheumatische Medikamente (bDMARDs) gegenüber den konventionellen Therapien überlegen gezeigt. Bei der PsO zeigten sich in mehreren Studien die IL-17- und IL-23-Inhibitoren den TNF-Inhibitoren (Etanercept und Adalimumab) überlegen. Ustekinumab war wirksamer als Etanercept, aber weniger wirksam als die IL-17- und IL-23-Inhibitoren. Zur Behandlung der PsA wurden bisher nur wenige H2H-Studien veröffentlicht. In der Spirit-H2H-Studie war bei einem kombinierten Endpunkt zum Ansprechen der Arthritis und der Psoriasis (ACR-50 und PASI-100) Ixekizumab gegenüber Adalimumab überlegen. Wenn nur die arthritischen Beschwerden betrachtet wurden (ACR-20), zeigte sich in der EXCEED-Studie Secukinumab gegenüber Adalimumab nicht signifikant überlegen, hinsichtlich der Wirkung auf die Hautbeteiligung (PASI-90) aber schon. Weitere H2H-Studien beschäftigten sich mit der Enthesitisbehandlung (ECLIPSA-Studie), der Wirksamkeit von JAK-Inhibition (SELECT-PSA-1) oder von zusätzlichem Methotrexat bei bDMARD-Therapie (MUST-Studie). Die H2H-Daten finden Eingang in die Therapieleitlinien und haben zu einer bevorzugten Empfehlung von IL-17- und IL-23-Inhibition gegenüber TNF-Inhibition bei relevanter Hautbeteiligung bei der PsA geführt.
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  • 文章类型: Journal Article
    有机发光材料使分子在广泛的应用中更加热情。发光有机材料受到研究人员的青睐,和聚集诱导发射(AIE)归因于特定发色团(通常是荧光团)在单分子可溶状态下显示非常低或几乎没有发射,但在溶液或固体状态下形成聚集体时变得高度发射。与许多其他传统荧光团相比,这种现象相对异常。AIE研究抑制聚集引起的猝灭(ACQ)。然而,碳点(CD)和量子点已显示出具有典型的荧光特性,因此,近年来,许多研究人员也吸引了他们的发展。CD,发光,和AIE材料不仅用于生物医学应用和有机发光二极管,还用于传感,自组装,和其他领域。应该将有希望的材料引入到具有AIE特征的设计框架中,以确保AIE的道德结果。最大的,AIE活性四苯基乙烯(TPE)由于其简单的合成策略而成为有吸引力的荧光团。本文讨论了TPE的合成性能,CD,和发光材料具有广泛的应用。我们已经概述了线性,分支形超分子,和杂化大分子由于其在未来的潜力。
    Organic luminescence materials makes the molecule more enthusiastic in wide  variety of  applications. The luminescent organic materials are in a attraction of the researchers, and the  Aggregation-Induced Emission (AIE) is attributed to the occurrence that particular chromophores (typically fluorophores) display very low or nearly no emission in the monomolecular soluble state but become highly emissive when forming aggregates in solution or in solid state.  This phenomenon is relatively abnormal when compared with many other traditional fluorophores. AIE research suppresses aggregation-caused quenching (ACQ). Nevertheless, the carbon dots (CDs) and quantum dots have shown to have tyical florescence properties, therefore, recent years many researchers have also attracted for their developments.  The CDs, luminescent, and AIE materials are not only used in biomedical applications and organic light-emitting diodes but also in sensing, self-assembly, and other areas. One should introduce promising material to a designed framework that exhibits AIE characteristics to ensure moral results in AIE. Amongest, AIE-active tetraphenylethylene (TPE) is attractive fluorophores due to its easy synthesis strategy. This review article discusses the synthesis properties of TPE, CDs, and luminescent materials with a broad range of applications. We have outlined linear, branched-shaped supramolecular, and hybrid macromolecules due to its potential in the future.
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  • 文章类型: Case Reports
    胃肠道毛霉菌病,在免疫功能低下的宿主中罕见的致命真菌感染,主要影响胃。结肠毛霉菌病很少见,并伴有高死亡率。近三分之一的克罗恩病患者出现肛周受累。肛周克罗恩病是一种特别使人衰弱的疾病,这需要多学科护理。它还可能需要用生物制剂进行深度免疫抑制以控制疾病活动。机会性感染可使这些患者的病程复杂化。我们介绍了一例在阿达木单抗上患有肛周克罗恩病的中年女性,该患者发展为结肠毛霉菌病,导致其疾病活动爆发。该患者强调需要提高对真菌感染的认识,因为真菌感染是炎症性肠病中疾病发作的原因。
    Gastrointestinal mucormycosis, a rare fatal fungal infection in an immunocompromised host, affects mainly the stomach. Colonic mucormycosis is infrequent and is associated with high mortality. Perianal involvement is seen in almost one-third of patients with Crohn\'s disease. Perianal Crohn\'s disease is a particularly debilitating form of the disease, which requires multidisciplinary care. It may also require profound immunosuppression with biological agents to control disease activity. Opportunistic infections can complicate the disease course in these patients. We present a case of a middle-aged female with perianal Crohn\'s disease on adalimumab who developed colonic mucormycosis causing a flare in her disease activity. This patient highlights the need to increase awareness about fungal infections as a cause of disease flare in inflammatory bowel disease.
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  • 文章类型: Case Reports
    背景:我们介绍了一例罕见的病例,一例28岁的风湿病男性患者,他在先接受依那西普治疗,然后接受戈利木单抗治疗时出现了嗜酸性粒细胞增多症。
    方法:尽管文献中很少报道嗜酸性粒细胞增多是各种肿瘤坏死因子-α[TNF-α]拮抗剂的副作用,它代表了这些患者未来治疗的一个谜,因为持续治疗可能导致此类患者出现皮肤或内脏嗜酸性粒细胞并发症.
    结论:此外,嗜酸性粒细胞增多的发病机制尚不清楚,所有提出的假设都不能解释某些受试者的嗜酸性粒细胞增殖。
    BACKGROUND: We present an unusual case of a 28-year-old rheumatologic male patient who developed eosinophilia while he was on etanercept therapy first and then on golimumab.
    METHODS: Although eosinophilia is rarely reported in the literature as a side-effect of various Tumor Necrosis Factor-alpha [TNF-alpha] antagonists, it represents a riddle about the future treatments of these patients since the persistence of therapy might lead to the onset of dermatologic or visceral eosinophilic complications in such patients.
    CONCLUSIONS: Furthermore, the pathogenesis of eosinophilia is still unknown, and all the proposed hypotheses do not explain the eosinophilic proliferation in certain subjects.
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  • 文章类型: Journal Article
    背景:进食障碍(ED)中的神经垂体(NH)功能尚不清楚。关于加压素和催产素的研究显示,关于它们的水平以及与ED心理并发症的关系尚无定论。阿片样物质的轮廓,一个至关重要的NH活性调节剂,也是未知的。
    目的:使用正电子发射断层扫描/MRI(PET/MRI)成像来表征ED患者与健康对照组的NH激素和NH阿片样物质张力的昼夜节律特征。
    方法:和肽素和催产素的十二点血浆昼夜节律谱,除了营养和心理评分,在年龄匹配的女性参与者中进行评估:13例神经性厌食症限制性型(ANR)患者,12名患者从AN(ANrec)康复,神经性贪食症患者14例,对照组12例。在AN中评估了神经垂体PET/MRI[11C]双丙诺芬结合电位(BPND),ANrec和控制。
    结果:结果显示,与对照组相比,ANR和ANrec中的和肽素昼夜节律水平较低,没有催产素差异。神经性贪食症表现出与肽素升高和催产素水平低。[11C]双丙诺芬垂体结合完全位于NH。神经性厌食症限制性型表现出比对照组更低的NH[11C]diprenorphinBPND(表明阿片类药物含量更高)和体积。在ANR中,和肽素与渗透压成反比。神经垂体[11C]双丙诺芬BPND与和肽素或催产素无关。
    结论:和肽素表现出显著的组间差异,强调其潜在的诊断和预后价值。催产素水平表现出相互矛盾的结果,质疑外周血评估的可靠性。神经性厌食症中NH阿片样物质的增加可能会影响血管加压素或催产素的释放,建议潜在的治疗应用。
    BACKGROUND: Neurohypophysis (NH) function in eating disorders (ED) remains poorly elucidated. Studies on vasopressin and oxytocin display inconclusive findings regarding their levels and associations with psychological complications in ED. The profile of opioid tone, a crucial NH activity regulator, is also unknown.
    OBJECTIVE: To characterise the circadian profile of NH hormones and NH opioid tone using positron emission tomography/MRI (PET/MRI) imaging in patients with ED compared to healthy controls.
    METHODS: Twelve-point plasma circadian profiles of copeptin and oxytocin, alongside nutritional and psychological scores, were assessed in age-matched female participants: 13 patients with anorexia nervosa restrictive-type (ANR), 12 patients recovered from AN (ANrec), 14 patients with bulimia nervosa and 12 controls. Neurohypophysis PET/MRI [11C] diprenorphin binding potential (BPND) was evaluated in AN, ANrec and controls.
    RESULTS: Results revealed lower copeptin circadian levels in both ANR and ANrec compared to controls, with no oxytocin differences. Bulimia nervosa exhibited elevated copeptin and low oxytocin levels. [11C] diprenorphin pituitary binding was fully localised in NH. Anorexia nervosa restrictive-type displayed lower NH [11C] diprenorphin BPND (indicating higher opioid tone) and volume than controls. In ANR, copeptin inversely correlated with osmolarity. Neurohypophysis [11C] diprenorphin BPND did not correlated with copeptin or oxytocin.
    CONCLUSIONS: Copeptin demonstrated significant group differences, highlighting its potential diagnostic and prognostic value. Oxytocin levels exhibited conflicting results, questioning the reliability of peripheral blood assessment. Increased NH opioid tone in anorexia nervosa may influence the vasopressin or oxytocin release, suggesting potential therapeutic applications.
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  • 文章类型: Journal Article
    已知白蚁丘土具有独特的物理化学和生化特性,使它们高度肥沃。考虑到它们丰富的营养成分,当前实验的目的是评估基于白蚁丘的盆栽介质的理化性质和酶活性,并评估其性能,以进一步探索花卉栽培。由地下白蚁的白蚁丘土(TS)组成的灌封介质,Odontotermesobesus与花园土壤(GS)以7种不同的组合制备,砂(S)和农家肥(FYM)和对照(无白蚁土堆),即,T1(TS,GS,S,FYM(v:v:v:v/1:2:1:1)),T2(TS,GS,S,FYM(v:v:v:v/2:1:1:1)),T3(TS,S,FYM(v:v:v/2:1:1)),T4(TS,GS,FYM(v:v:v/2:1:1)),T5(TS,GS,S(v:v:v/2:1:1)),T6(TS,S,FYM(v:v:v/3:1:1)),T7(TS,S,FYM(v:v:v/1:1:2))和控制(GS,S,FYM(v:v:v/2:1:1))。然后在实验室中分析样品。对物理化学和生物学参数的实验分析揭示了T7(TS,S,FYM(v:v:v/1:1:2))以pH(7.15)表示,有机碳(2.13%),有效氮(526.02kgha-1),有效磷(56.60千克ha-1),有效钾(708.19千克ha-1),脱氢酶活性(18.21μgTTFg-1土壤第1天),磷酸单酯酶(PME)活性(46.6854μg对硝基苯酚/gsoil/h)和脲酶活性(3.39μgNH4-Ng-1土壤h-1)。而T4(TS,GS,FYM(v:v:v/2:1:1))在PME活性方面的优势(50.54μg对硝基苯酚/gsoil/h),荧光素二乙酸酯(FDA)活性(11.01μg荧光素/gsoil/h)和土壤微生物生物量碳(SMBC)(262.25μg/g)。在实验室分析之后,选择了两种最佳的盆栽混合物(T7和T4),并通过种植测试作物来评估其性能,万寿菊cv。印加橙.考虑到生长参数,灌封介质:T7被发现在植物传播方面显着优越(39.64厘米),叶面积指数(4.07),鲜重(37.72克),产量(317.81克/株),和花的直径(9.38厘米)超过T4和对照。确定了收益:成本(B:C)比率,这意味着净收益与种植总成本的比率。在T7中作为盆栽植物饲养万寿菊花的B:C比为1.10,而T7的盆栽混合物的B:C比为2.52。这表明T7灌封介质对于商业目的也是经济上可行的选择。
    Termite mound soils are known to possess unique physico-chemical and biochemical properties, making them highly fertile. Considering their rich nutrient content, the objective of the current experiment is to assess the physico-chemical properties and enzyme activities of termite mound based potting media and evaluate theirperformance for further exploration in floriculture. Potting media consisting of termite mound soil (TS) of a subterranean termite, Odontotermes obesus were prepared in 7 different combinations with garden soil (GS), sand (S) and farmyard manure (FYM) and a control (without termite mound soil), i.e., T1 (TS, GS, S, FYM (v:v:v:v /1:2:1:1)), T2 (TS, GS, S, FYM (v:v:v:v / 2:1:1:1)), T3 (TS, S, FYM (v:v:v / 2:1:1)), T4 (TS, GS, FYM (v:v:v / 2:1:1)), T5 (TS, GS, S (v:v:v / 2:1:1)), T6 (TS, S, FYM (v:v:v / 3:1:1)), T7 (TS, S, FYM (v:v:v / 1:1:2)) and control (GS, S, FYM (v:v:v / 2:1:1)). The samples were then analysed in laboratory. Experimental analysis on physico-chemical and biological parameters revealed superiority of T7 (TS, S, FYM (v:v:v / 1:1:2)) in terms of pH (7.15), organic carbon (2.13%), available nitrogen (526.02 kg ha-1), available phosphorus (56.60 kg ha-1), available potassium (708.19 kg ha-1), dehydrogenase activity (18.21 μg TTF g-1 soil day-1), Phosphomonoesterase (PME) activity (46.68 54 μg p-nitrophenol/gsoil/h) and urease activity (3.39 μg NH4-N g-1 soil h-1). Whereas T4 (TS, GS, FYM (v:v:v /2:1:1)) registered superiority in terms of PME activity (50.54 μg p-nitrophenol/gsoil/h), Fluorescein diacetate (FDA) activity (11.01 μgfluorescein/gsoil/h) and Soil Microbial Biomass Carbon (SMBC) (262.25 μg/g). Subsequent to the laboratory analysis, two best potting mixtures (T7 & T4) were selected and their performance was assessed by growing a test crop, Tagetes erecta cv. Inca Orange. Considering the growth parameters, the potting media: T7 was found to be significantly superior in terms of plant spread (39.64 cm), leaf area index (4.07), fresh weight (37.72 g), yield (317.81 g/plant), and diameter (9.38 cm) of flower over T4 & control. The Benefit:Cost (B:C) ratio meaning the ratio of net returns to total cost of cultivation was determined. The B:C ratio of raising marigold flower as potted plant in T7 was 1.10 whereas the B:C ratio of the potting mixture of T7 was 2.52. This shows that T7 potting media is also economically viable choice for commercial purposes.
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  • 文章类型: Journal Article
    目的:外科主动脉瓣置换术(SAVR)患者瓣膜假体的选择仍存在争议。在这项研究中,我们比较了接受主动脉瓣置换术和生物或机械主动脉瓣假体的患者的长期结局.
    方法:我们评估了1989年至2019年在四个医疗中心接受生物或机械主动脉瓣置换术伴或不伴冠状动脉搭桥术的5,762例45-74岁患者的晚期结果。Cox比例风险模型用于比较晚期生存率;通过年龄和假体类型之间的相互作用项评估假体类型对长期生存率的年龄依赖性影响。中风的发生率,大出血,比较了造影术后主动脉瓣的再手术。
    结果:总体而言,61%(n=3,508)的患者接受了生物假体。生物假体组30天死亡率为1.7%(n=58),机械组为1.5%(n=34)(P=0.75)。在平均9.0年的随访中,生物假体组的校正后死亡风险较高(HR=1.30,P<0.001).与机械假体相关的长期生存益处持续到70岁。生物假体(相对于机械假体)与中风的风险相似(P=0.20),大出血风险较低(P<0.001),再次手术风险较高(P<0.001)。
    结论:与生物假体相比,在70岁及以下的患者中,机械主动脉瓣与较低的调整后长期死亡风险相关.应告知<70岁接受SAVR的患者机械瓣膜替代品的潜在生存益处。
    OBJECTIVE: The selection of valve prostheses for patients undergoing surgical aortic valve replacement remains controversial. In this study, we compared the long-term outcomes of patients undergoing aortic valve replacement with biological or mechanical aortic valve prostheses.
    METHODS: We evaluated late results among 5762 patients aged 45 to 74 years who underwent biological or mechanical aortic valve replacement with or without concomitant coronary artery bypass from 1989 to 2019 at 4 medical centers. The Cox proportional hazards model was used to compare late survival; the age-dependent effect of prosthesis type on long-term survival was evaluated by an interaction term between age and prosthesis type. Incidences of stroke, major bleeding, and reoperation on the aortic valve after the index procedure were compared between prosthesis groups.
    RESULTS: Overall, 61% (n = 3508) of patients received a bioprosthesis. The 30-day mortality rate was 1.7% (n = 58) in the bioprosthesis group and 1.5% (n = 34) in the mechanical group (P = .75). During a mean follow-up of 9.0 years, the adjusted risk of mortality was higher in the bioprosthesis group (hazard ratio, 1.30, P < .001). The long-term survival benefit associated with mechanical prosthesis persisted until 70 years of age. Bioprosthesis (vs mechanical prosthesis) was associated with a similar risk of stroke (P = .20), lower risk of major bleeding (P < .001), and higher risk of reoperation (P < .001).
    CONCLUSIONS: Compared with bioprostheses, mechanical aortic valves are associated with a lower adjusted risk of long-term mortality in patients aged 70 years or less. Patients aged less than 70 years undergoing surgical aortic valve replacement should be informed of the potential survival benefit of mechanical valve substitutes.
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  • 文章类型: Journal Article
    当一个人走向一群行人时,处理他们的生物运动,同时控制自己的自我运动是一个困难的感知任务。助行器的肢体关节自然地与助行器在场景中的平移耦合,并允许将自运动产生的光流与其他行人的生物运动分离。最近的研究表明,如果肢体发音和翻译不匹配,比如在原地行走,自我运动感知变得有偏见。这种偏见可能反映了由于行人人群的四肢关节而产生的虚幻运动。为了研究这个假设,我们向观察者提供了向横向移动的点光步行者人群向前自我运动的模拟,并要求他们报告感知到的人群横向速度。为了研究人群速度感知对生物运动的依赖性,我们还包括了助行器的点在空间上被打乱以破坏身体形态和肢体关节的条件。我们观察到与生物运动的衔接率有关的虚幻人群速度感知。乱七八糟的步行者也产生了虚幻的运动,但与衔接率无关。我们得出的结论是,肢体关节会引起人群运动的感知,可用于解释对人群的自我运动。
    When one walks toward a crowd of pedestrians, dealing with their biological motion while controlling one\'s own self-motion is a difficult perceptual task. Limb articulation of a walker is naturally coupled to the walker\'s translation through the scene and allows the separation of optic flow generated by self-motion from the biological motion of other pedestrians. Recent research has shown that if limb articulation and translation mismatch, such as for walking in place, self-motion perception becomes biased. This bias may reflect an illusory motion attributed to the pedestrian crowd from the articulation of their limbs. To investigate this hypothesis, we presented observers with a simulation of forward self-motion toward a laterally moving crowd of point-light walkers and asked them to report the perceived lateral speed of the crowd. To investigate the dependence of the crowd speed percept on biological motion, we also included conditions in which the points of the walker were spatially scrambled to destroy body form and limb articulation. We observed illusory crowd speed percepts that were related to the articulation rate of the biological motion. Scrambled walkers also produced illusory motion but it was not related to articulation rate. We conclude that limb articulation induces percepts of crowd motion that can be used for interpreting self-motion toward crowds.
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  • 文章类型: Letter
    暂无摘要。
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  • 文章类型: Journal Article
    目的:进食障碍(ED)是主要的公共卫生负担。越来越多,研究表明,心理健康(MH)领域未能提高治疗的有效性,必须考虑替代护理模式。精准心理健康(PMH)旨在根据个人需求定制治疗方法,并依赖于对精神疾病的神经生物学和生理基础的全面了解。
    方法:在这篇叙述性综述中,回顾并总结了已发表的文献,重点是针对ED的PMH策略的生物学应用。
    结果:本综述共保留了39篇文章,涵盖了与PMH相关的各种主题。许多具有PMH适用性的生物标记的研究集中在神经性厌食症上。尽管已经确定了各种潜在的PMH研究应用,审查未能发现任何实施常规ED实践的证据.
    结论:尽管PMH在ED治疗中的生物学应用具有理论价值,缺乏标准实践的临床应用。有必要进一步投资于寻求识别生物学标志物和研究疾病的神经生物学基础的研究,以期靶向和开发可以更好地适应患者个性化需求的治疗方法。
    OBJECTIVE: Eating disorders (EDs) represent a major public health burden. Increasingly, studies suggest mental health (MH) fields are failing to improve the effectiveness of treatments and that alternative models of care must be considered. Precision mental health (PMH) seeks to tailor treatment to individual needs and relies on a comprehensive understanding of the neurobiological and physiological underpinnings of mental illness.
    METHODS: In this narrative review, published literature with focus on biological application of PMH strategies for EDs is reviewed and summarised.
    RESULTS: A total of 39 articles were retained for the review covering a variety of themes with relevance to PMH. Many studies of biological markers with PMH applicability focused on anorexia nervosa. Although a variety of potential PMH research applications were identified, the review failed to identify any evidence of implementation into routine ED practice.
    CONCLUSIONS: Despite the theoretical merit of biological application of PMH in ED treatment, clinical applications for standard practice are lacking. There is a need to invest further in studies that seek to identify biological markers and investigate neurobiological underpinnings of disease in hopes of targeting and developing treatments that can be better tailored to the individualised needs of patients.
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