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Pharmacotherapy of Hematologic Malignancies with Tipifarnib 替法尼对血液恶性肿瘤的药物治疗
Pub Date : 2009-07-29 DOI: 10.4137/CMT.S1097
I. Kotsianidis, Evangelia Nakou, Irene Bouchliou
The illumination of cellular processes in cancer has revolutionized oncology drug development leading to a shift from non-specific chemotherapy to the selective targeting of tumorigenic signal transduction pathways. Farnesyltransferase inhibitors (FTIs) target proteins needing prenylation for functioning, thus inhibiting a wide variety of molecular targets crucial for cell proliferation and survival. Tipifarnib (R115777, Zarnestra®), a potent and specific inhibitor of Farnesyltransferase, can attain strong inhibition of tumor growth in preclinical models. As a single agent, tipifarnib has demonstrated activity in several hematologic malignancies, namely acute myeloid leukemia, myelodysplastic syndrome, chronic myeloid leukemia and multiple myeloma. However, considering the complexity of the molecular aberrations implicated in the pathogenesis of hematologic neoplasms, it is rather unlikely that monotherapy with tipifarnib will serve as a stand-alone treatment approach. Indeed, improved results have been achieved by combining tipifarnib with other anticancer agents, whereas the first efforts for the identification of molecular predictors of response are reporting intriguing results. Ongoing trials are anticipated to define the exact role of tipifarnib in the treatment of hematologic malignancies.
对癌症细胞过程的阐明已经彻底改变了肿瘤药物的开发,导致了从非特异性化疗到选择性靶向致瘤性信号转导途径的转变。法尼基转移酶抑制剂(FTIs)靶向需要戊酰化才能发挥功能的蛋白质,从而抑制对细胞增殖和存活至关重要的各种分子靶标。Tipifarnib (R115777, Zarnestra®)是一种有效的特异性法尼基转移酶抑制剂,在临床前模型中可以获得很强的肿瘤生长抑制作用。作为单一药物,tipifarnib已被证明对几种血液系统恶性肿瘤有活性,即急性髓性白血病、骨髓增生异常综合征、慢性髓性白血病和多发性骨髓瘤。然而,考虑到血液肿瘤发病机制中涉及的分子畸变的复杂性,用替法尼单药治疗不太可能作为一种独立的治疗方法。事实上,通过将tipfarnib与其他抗癌药物联合使用,已经取得了更好的结果,而鉴定反应的分子预测因子的首次努力正在报告有趣的结果。正在进行的试验预计将确定蒂法尼在血液系统恶性肿瘤治疗中的确切作用。
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引用次数: 0
Zolmitriptan and the Triptan Era 曲曲坦和曲曲坦时代
Pub Date : 2009-07-22 DOI: 10.4137/CMT.S2907
M. Marmura
Zolmitriptan is one of seven triptans available to treat acute migraine attacks. The introduction of these selective serotonin receptor agonists almost 20 years ago has revolutionized acute migraine treatment. Triptans are now first line migraine drugs, and provide acute treatment that is well-tolerated, safe and effective. This commentary reviews the use of zolmitriptan and other triptans, discusses how to maximize their effect, and examines the controversies surrounding this class of medication such as medication-overuse headache, use in migraine aura or prodrome, pediatric use, and important drug interactions.
佐米曲坦是治疗急性偏头痛发作的七种曲坦类药物之一。大约20年前,这些选择性血清素受体激动剂的引入彻底改变了急性偏头痛的治疗。曲坦类药物现在是一线偏头痛药物,提供耐受性良好、安全有效的急性治疗。这篇评论回顾了唑米曲坦和其他曲坦类药物的使用,讨论了如何最大化其效果,并检查了围绕这类药物的争议,如药物过度使用头痛,用于偏头痛先兆或前驱症状,儿科使用,以及重要的药物相互作用。
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引用次数: 0
Glimepiride-pioglitazone Hydrochloride in the Treatment of Type 2 Diabetes 格列美脲-盐酸吡格列酮治疗2型糖尿病
Pub Date : 2009-07-15 DOI: 10.4137/CMT.S2016
G. Derosa, S. Salvadeo
The purpose of this article is to review the effectiveness and tolerability of pioglitazone and glimepiride combination treatment for type 2 diabetes, particularly in the context of metabolic control and cardiovascular prevention. We reviewed studies of pioglitazone and glimepiride combination treatment through literature in the internet based Medline. The search was conducted using the search terms pioglitazone, glimepiride, glycemic control, combination therapy, and type 2 diabetes mellitus. The current evidence shows that pioglitazone in association with glimepiride is an effective option in the treatment of type 2 diabetes. Fixed dose combination permits a better compliance to therapy in patients with type 2 diabetes. More studies are needed to establish a role of pioglitazone and glimepiride in atherosclerosis and cardiovascular prevention beyond glycemic control.
本文的目的是回顾吡格列酮和格列美脲联合治疗2型糖尿病的有效性和耐受性,特别是在代谢控制和心血管预防方面。我们通过基于互联网的Medline文献回顾了吡格列酮和格列美脲联合治疗的研究。检索词为吡格列酮、格列美脲、血糖控制、联合治疗和2型糖尿病。目前的证据表明,吡格列酮联合格列美脲是治疗2型糖尿病的有效选择。固定剂量联合治疗使2型糖尿病患者的依从性更好。需要更多的研究来确定吡格列酮和格列美脲在控制血糖之外的动脉粥样硬化和心血管预防中的作用。
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引用次数: 7
Pregabalin and Fibromyalgia Syndrome: A Treatment Option 普瑞巴林和纤维肌痛综合征:一种治疗选择
Pub Date : 2009-07-15 DOI: 10.4137/CMT.S1094
K. Lawson
Fibromyalgia (FM) is a chronic complex pain disorder that is multidimensional and exhibits heterogeneity requiring a long-term multidisciplinary approach to management. Many of the drugs used in the treatment of FM have been focused to the management of single symptoms; often such drugs fail to demonstrate acceptable efficacy in the majority of the patient population. Pregabalin is an α2-δ ligand that regulates the release and postsynaptic actions of neurotransmitters related to analgesic, anticonvulsant and anxiolytic properties. In randomized, double-blind, placebo-controlled studies, pregabalin has demonstrated an improvement in pain, sleep and fatigue symptoms associated with FM, as well as offering an improvement in parameters related to quality of life. Although the positive outcomes obtained with pregabalin support its use as an option for the management of FM, the efficacy was restricted to a selected patient population outside of the usual care setting. Current data do not allow an explanation where there are any limitations of pregabalin as a treatment of patients with FM, as to whether this is a deficiency of the drug or the process of assessment (e.g. assessment tools of FM, clinical trial design).
纤维肌痛(FM)是一种慢性复杂疼痛障碍,是多维的,表现出异质性,需要长期的多学科方法来管理。许多用于治疗FM的药物一直专注于单一症状的管理;通常这类药物在大多数患者群体中不能显示出可接受的疗效。普瑞巴林是一种α2-δ配体,调节与镇痛、抗惊厥和抗焦虑特性相关的神经递质的释放和突触后作用。在随机、双盲、安慰剂对照的研究中,普瑞巴林已证明可改善与FM相关的疼痛、睡眠和疲劳症状,并可改善与生活质量相关的参数。尽管使用普瑞巴林获得的积极结果支持其作为FM管理的一种选择,但其疗效仅限于常规护理环境之外的选定患者群体。目前的数据不允许解释普瑞巴林作为FM患者治疗的任何局限性,以及这是药物缺陷还是评估过程(例如FM评估工具,临床试验设计)的缺陷。
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引用次数: 1
Pharmacotherapy of Complicated Urinary Tract and Intra-abdominal Infections with Doripenem 多利培南治疗复杂性尿路及腹腔感染
Pub Date : 2009-07-15 DOI: 10.4137/CMT.S2062
Anthony M. Nicasio, J. Kuti, D. Nicolau
Due to the growing rate of multi-drug resistant bacteria in complicated infections, the need for new broad-spectrum antimicrobials is paramount. Doripenem, a new addition to the intravenous carbapenem class, has recently been approved for the treatment of complicated lower urinary tract infections and/or pyelonephritis (cUTI) and complicated intra-abdominal infections (cIAI) in adult patients. Doripenem exhibits potent in vitro and in vivo bactericidal activity against an assortment of Gram-positive and Gram-negative aerobic and anaerobic organisms, including Pseudomonas aeruginosa, Acinetobacter baumannii, and Enterobacteriaceae that produce extended spectrum beta-lactamases (ESBL). Relative to other available carbapenems, doripenem typically displays MICs that are 1–2 dilutions lower than meropenem and 2–4 dilutions lower than imipenem against P. aeruginosa. Since the kidneys primarily excrete doripenem as whole drug, dose adjustments are needed in patients with renal impairment. Doripenem 500 mg q8 h demonstrated non-inferiority to levofloxacin 250 mg q24 h in clinical trials of patients with cUTI; it was non-inferior to meropenem 1000 mg q8 h in patients with cIAI. Doripenem’s broad spectrum of activity, in vitro potency against particularly difficult to treat organisms, and desirable safety profile make it an attractive option in the treatment of cUTI and cIAI.
由于复杂感染中多重耐药细菌的比例不断增长,对新型广谱抗菌素的需求至关重要。多利培南是静脉注射碳青霉烯类药物的新成员,最近被批准用于治疗成人患者的复杂性下尿路感染和/或肾盂肾炎(cUTI)和复杂性腹腔内感染(cIAI)。多利培南在体外和体内对多种革兰氏阳性和革兰氏阴性的好氧和厌氧生物,包括铜绿假单胞菌、鲍曼不动杆菌和产生广谱β -内酰胺酶(ESBL)的肠杆菌科细菌,都显示出强有力的杀菌活性。相对于其他可用的碳青霉烯类,多利培南对铜绿假单胞菌的mic值通常比美罗培南低1-2倍,比亚胺培南低2-4倍。由于肾脏主要将多利培南作为全药排出,因此在肾功能损害患者中需要调整剂量。在cUTI患者的临床试验中,多利培南500 mg q8 h比左氧氟沙星250 mg q24 h无劣效性;在cIAI患者中,其疗效不逊于美罗培南1000 mg q8 h。多利培南的广谱活性,对特别难以治疗的生物体的体外效力以及理想的安全性使其成为治疗cUTI和cIAI的有吸引力的选择。
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引用次数: 0
Safety and Efficacy of the bi-Sulfydryl ACE-Inhibitor Zofenopril in the Management of Cardiovascular Disease 双巯基ace抑制剂佐非诺普利治疗心血管疾病的安全性和有效性
Pub Date : 2009-07-15 DOI: 10.4137/CMT.S2796
C. Napoli
In the 1970s, pharmacological therapy interrupting the renin-angiotensin system was considered beneficial for patients with high-renin hypertension. Angiotensin-converting enzyme (ACE) inhibitors proved to be effective not only in patients with high renin and elevated blood pressure, but also in many hypertensive patients with normal levels of plasma renin activity. ACE inhibitors are used in a wide range of chronic illnesses such as atherosclerosis, hypertension, myocardial infarction, heart failure, diabetic complications, and stroke. To date, more than ninety controlled clinical trials evaluating the beneficial effects of 14 different ACE inhibitors were conducted. Moreover, data from experimental studies showed that ACE inhibitors can attenuate the development of atherosclerosis, oxidative stress, and vascular inflammation in a wide range of species indicating that ACE inhibition also favourably affects the vasculature. More than fifteen years ago, the bi-sulfydryl ACE-inhibitor zofenopril has shown an excellent clinical safety and efficacy in patients with hypertension and in those with myocardial infarction. More recently, this compound exhibited a potent antioxidant and antiatherosclerotic effect indicating a clinical useful vasoprotective action.
在20世纪70年代,阻断肾素-血管紧张素系统的药物治疗被认为对高肾素高血压患者有益。血管紧张素转换酶(ACE)抑制剂不仅对高肾素和血压升高的患者有效,而且对许多血浆肾素活性正常的高血压患者也有效。ACE抑制剂广泛用于慢性疾病,如动脉粥样硬化、高血压、心肌梗死、心力衰竭、糖尿病并发症和中风。迄今为止,进行了超过90项对照临床试验,评估了14种不同的ACE抑制剂的有益效果。此外,实验研究数据表明,ACE抑制剂可以减轻多种物种动脉粥样硬化、氧化应激和血管炎症的发展,这表明ACE抑制也有利于血管系统。早在15年前,双巯基ace抑制剂zofenopril就在高血压和心肌梗死患者中显示出良好的临床安全性和有效性。最近,该化合物显示出有效的抗氧化和抗动脉粥样硬化作用,表明临床有用的血管保护作用。
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引用次数: 0
Bevacizumab: Its Place in the Treatment of Advanced Non-small Cell Lung Cancer 贝伐单抗:在晚期非小细胞肺癌治疗中的地位
Pub Date : 2009-07-13 DOI: 10.4137/CMT.S1949
V. Agarwal, R. Prasad, M. Butt
Lung cancer is the most common cause of cancer mortality worldwide and even with current advances in chemotherapy the outcome is disappointing. The advances in molecular biology have enabled us to identify various targets for anticancer treatments. The VEGF-VEGFR signalling pathway plays a significant role in tumor angiogenesis and has been a major target for the development of various anticancer drugs. Bevacizumab is a recombinant humanized monoclonal antibody, which binds to VEGF and has shown efficacy in various tumors. Bevacizumab has been licensed in first line treatment of non-small cell lung cancer (NSCLC) in combination with chemotherapy. We are reviewing the evidence of the benefit and toxicity of Bevacizumab in combination with chemotherapy and other targeted agents in advanced NSCLC.
肺癌是世界范围内最常见的癌症死亡原因,即使在目前的化疗进展中,结果也令人失望。分子生物学的进步使我们能够确定各种抗癌治疗的靶点。VEGF-VEGFR信号通路在肿瘤血管生成中起着重要作用,已成为各种抗癌药物开发的主要靶点。贝伐单抗是一种重组人源化单克隆抗体,与VEGF结合,对多种肿瘤均有疗效。贝伐单抗已被批准用于非小细胞肺癌(NSCLC)联合化疗的一线治疗。我们正在审查贝伐单抗联合化疗和其他靶向药物治疗晚期NSCLC的益处和毒性的证据。
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引用次数: 0
Management of Transfusional chronic Iron Overload: Focus on Deferasirox 输注慢性铁超载的管理:重点是去铁铁
Pub Date : 2009-07-09 DOI: 10.4137/CMT.S1970
F. Pilo, A. Tucci, Laura Dessì, E. Angelucci
Most patients with hereditary or chronic acquired anemias are dependent on regular red cell transfusions. Untreated iron overload from transfusions is responsible for morbidity and mortality in patients with thalassemia major. However, clinical consequences of parenchymal iron overload have been reported not only in thalassemia major but also in patients with myelodysplastic syndrome. The current standard in iron chelation therapy is deferoxamine mesylate (Desferal®). Deferasirox is the first oral iron chelator approved in the Europe Union for use in patients with transfusional iron overload with different diseases. The aim of this review is to examine the properties and management of Deferasirox.
大多数遗传性或慢性获得性贫血患者依赖于常规红细胞输注。输血中未经治疗的铁超载是导致地中海贫血患者发病率和死亡率的原因。然而,脑实质铁超载的临床后果不仅在地中海贫血中有报道,在骨髓增生异常综合征患者中也有报道。目前铁螯合治疗的标准是甲磺酸去铁胺(Desferal®)。deasirox是欧盟批准的第一个口服铁螯合剂,用于不同疾病的输血铁超载患者。本文综述的目的是探讨去菌清的性质和处理方法。
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引用次数: 7
Tipranavir: A Review of its Use in Therapy of HIV Infection 替普那韦治疗HIV感染的研究进展
Pub Date : 2009-07-09 DOI: 10.4137/CMT.S2668
R. Winzer, P. Langmann
Tipranavir (TPV) is a selective nonpeptidic HIV-1 protease inhibitor (PI) which is used in the treatment of treatment-experienced adults with HIV-1 infection. Tipranavir is administered orally twice daily in combination with low-dose ritonavir. The durable efficacy of tipranavir, in combination with low-dose ritonavir (tipranavir/ritonavir 500 mg/200 mg twice daily), has been demonstrated in well designed trials in treatment-experienced adults infected with multidrug-resistant strains of HIV-1. In treatment-experienced adults with HIV-1 infection receiving an optimized background regimen, viral suppression was greater and immunological responses were better with regimens containing tipranavir/ritonavir than with comparator ritonavir-boosted PI-containing regimens. The efficacy appeared to be more marked in patients receiving two fully active drugs in the regimen, with the combination of tipranavir/ritonavir and enfuvirtide (for the first time) appearing to be the most successful. Although tipranavir is generally well tolerated, clinical hepatitis and hepatic decompensation, and intracranial hemorrhage have been associated with the drug. Tipranavir also has a complex drug interaction profile. Thus, tipranavir, administered with ritonavir, is an effective treatment option for use in the combination therapy of adults with HIV-1 infection who have been previously treated with other antiretroviral drugs.
替普那韦(TPV)是一种选择性非肽性HIV-1蛋白酶抑制剂(PI),用于治疗有治疗经验的成人HIV-1感染。替普那韦每日口服两次,与低剂量利托那韦联合使用。替普那韦与低剂量利托那韦(替普那韦/利托那韦500毫克/200毫克,每日两次)联合使用的持久疗效已在精心设计的治疗经验丰富的成人HIV-1耐多药菌株感染试验中得到证实。在接受优化背景方案的有治疗经验的HIV-1感染成人中,含有替普那韦/利托那韦的方案比比较物利托那韦增强的含有pi的方案对病毒的抑制更大,免疫反应更好。在该方案中接受两种完全有效药物治疗的患者中,疗效似乎更为明显,其中替普那韦/利托那韦和恩福韦肽的联合治疗(首次)似乎最成功。虽然替普那韦一般耐受性良好,但临床肝炎和肝功能失代偿以及颅内出血与该药有关。替普那韦也有复杂的药物相互作用。因此,替普那韦与利托那韦联合使用是一种有效的治疗选择,可用于以前曾接受过其他抗逆转录病毒药物治疗的成人HIV-1感染患者的联合治疗。
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引用次数: 1
Safety and Efficacy of Lamotrigine in Older Adults with Epilepsy and Co-Morbid Depressive Symptoms: 拉莫三嗪治疗老年癫痫合并抑郁症状的安全性和有效性
Pub Date : 2009-07-09 DOI: 10.4137/CMT.S2165
Y. Schiller, N. Krivoy
Lamotrigine is an oral well absorbed antiepileptic medication (AED) from the phenyltriazine class approved by the FDA in 1994 for the treatment of epilepsy and in 2003 for the treatment of bipolar disorder. For epilepsy it is used to treat partial seizures, primary and secondary tonic–clonic seizures, and seizures associated with Lennox-Gastaut syndrome. Lamotrigine is the only AED that treats the depressive as well as the maniac phases of bipolar disorders. It is important to consider lamotrigine adverse reactions and drug-drug interactions such as with other AED’s, psychiatric medications, estrogens, and complementary-alternative medicines. Lamotrigine induces skin reactions as part of the hypersensitivity response (HSR), the actual incidence of skin rash is low (1.8%) providing slow escalation regimens are used when introducing this medication. An especially appealing indication for lamotrigine treatment is elderly epilepsy with depression. The main advantage of lamotrigine for the treatment of this indication in the elderly lies in its favorable and predictive adverse event profile and drug-drug interactions in comparison to other AEDs. Lamotrigine can serve in the elderly as both an antiepileptic and an antidepressant drug with a relatively favorable profile.
拉莫三嗪是一种口服吸收良好的抗癫痫药物(AED),属于苯基三嗪类,1994年被FDA批准用于治疗癫痫,2003年被FDA批准用于治疗双相情感障碍。对于癫痫,它用于治疗部分性癫痫发作、原发性和继发性强直阵挛性癫痫发作以及与lenox - gastaut综合征相关的癫痫发作。拉莫三嗪是唯一一种既能治疗抑郁又能治疗躁郁症躁狂期的AED。重要的是要考虑拉莫三嗪的不良反应和药物-药物相互作用,如与其他AED,精神药物,雌激素和补充-替代药物。拉莫三嗪作为超敏反应(HSR)的一部分诱导皮肤反应,如果在引入该药时使用缓慢升级方案,皮疹的实际发生率很低(1.8%)。拉莫三嗪治疗的一个特别吸引人的适应症是老年癫痫伴抑郁症。与其他aed相比,拉莫三嗪治疗老年人这一适应症的主要优势在于其有利和可预测的不良事件和药物-药物相互作用。拉莫三嗪在老年人中既可作为抗癫痫药,也可作为抗抑郁药,具有较好的应用前景。
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引用次数: 12
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