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Differential Effect of Fixed Ratio Magnitude on the Rate of Lever-Pressing and Interinjection Intervals of Cocaine Self-Administration in Rats 固定比值量级对大鼠可卡因自我给药杠杆按压率和注射间隔时间的差异影响
IF 1.9 Q3 MEDICINE, RESEARCH & EXPERIMENTAL Pub Date : 2023-01-01 DOI: 10.1016/j.curtheres.2023.100727
Jhanvi N. Desai , Abigail R. Muccilli , Luis E. Tron Esqueda , Jeffrey A. Welge PhD , Andrew B. Norman PhD

Background

Many features of self-administration behavior may be explained by reference to the properties of schedules of reinforcement. Schedules alter the probability of a behavior being reinforced and thereby increase, or decrease, the frequency of the behavior and fixed ratio (FR) magnitude reportedly alters the rate of responding to cocaine. A pharmacokinetic/pharmacodynamic interaction theory states that lever-pressing behavior is induced only when cocaine levels in the body are above the priming/remission threshold and below the satiety threshold—a range termed the compulsion zone. This theory successfully explains cocaine self-administration in rats on a progressive ratio and the FR1 schedule.

Objectives

To determine the effects of high FR magnitude on the rate of self-administration of cocaine and the rate of lever-pressing behavior when cocaine levels are within the compulsion zone.

Methods

Rats acquired cocaine self-administration on an FR1 schedule and then were switched to sessions that started with FR1 and then FR 5, 10, 20, or 50. An only FR1 session was run each week between FR1/FR50 sessions and then only FR1 sessions were conducted for several weeks.

Results

Interinjection intervals at a unit dose of 3 µmol/kg were regular at both FR1 and FR50 but were longer by the time required to complete the 50 presses. When responding by rats was maintained under an FR50 schedule of cocaine presentations, compared to baseline FR1 sessions, dramatic increases in the number of lever-presses were observed after access to cocaine was terminated, a previously unreported finding. However, lever-pressing occurred only when cocaine levels were in the compulsion zone, and this duration was unchanged. The increase in lever-pressing persisted for weeks. Interinjection intervals at FR1 were not altered after exposure to FR50.

Conclusions

Although previously considered key to understanding the regulation of cocaine self-administration behavior, FR magnitude simply increased interinjection intervals by the time required to complete 50 lever-presses. The dramatic increase in the rate of lever-pressing was caused by the high FR schedule rather than cocaine. The utility of the schedule-induced increase in the rate of lever-pressing is unclear. The compulsion zone theory provides a rational pharmacological basis for understanding cocaine self-administration behavior.

自我给药行为的许多特征可以通过参考强化时间表的特性来解释。时间表改变了一种行为被强化的可能性,从而增加或减少了这种行为的频率,据报道,固定比率(FR)的大小改变了对可卡因的反应率。药代动力学/药效学相互作用理论指出,只有当体内可卡因水平高于启动/缓解阈值,低于满足阈值(即强迫区)时,才会诱发杠杆按压行为。这一理论成功地解释了大鼠可卡因自我给药的递进比和FR1时间表。目的:探讨高FR值对可卡因自我给药率和可卡因处于强迫区时杠杆按压行为率的影响。大鼠按照FR1计划获得可卡因自我给药,然后切换到FR1开始,然后fr5、10、20或50的疗程。在FR1/FR50阶段之间每周只进行FR1阶段,然后连续几周只进行FR1阶段。:单位剂量3µmol/kg的注射间隔在FR1和FR50时均有规律,但完成50次按压所需的时间较长。当大鼠的反应维持在FR50的可卡因呈现时间表下时,与基线FR1时段相比,在停止获取可卡因后观察到杠杆按压次数的急剧增加,这是以前未报道的发现。然而,只有当可卡因水平处于强迫区时,才会出现按压杠杆的情况,而且这个持续时间是不变的。杠杆压力的增加持续了数周。暴露于FR50后,FR1的注射间隔时间没有改变。虽然先前被认为是理解可卡因自我给药行为调节的关键,但FR大小只是增加了完成50次杠杆按压所需的注射间隔时间。压杆率的急剧增加是由高FR时间表引起的,而不是可卡因。进度引起的杠杆压紧率增加的效用尚不清楚。强迫带理论为理解可卡因自我给药行为提供了合理的药理学基础。
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引用次数: 0
Optimization of Nasal Liposome Formulation of Venlafaxine Hydrochloride using a Box-Behnken Experimental Design Box-Behnken实验设计优化盐酸文拉法辛鼻脂质体制剂。
IF 1.9 Q3 MEDICINE, RESEARCH & EXPERIMENTAL Pub Date : 2023-01-01 DOI: 10.1016/j.curtheres.2023.100714
Sulekha Khute MPharm, Rajendra K. Jangde PhD, MPharm

Background

Intranasal administration is among the most effective alternatives to deliver drugs directly to the brain and prevent first-pass metabolism. Venlafaxine-loaded liposomes are biocompatible carriers that enhance transport qualities over the nasal mucosa.

Objective

This research aimed to develop, formulate, characterize, and observe the prepared formulation.

Methods

The formulation was developed using the thin-film hydration technique. The response surface plot interrelationship between three independent variables are lipid, cholesterol and polymer and four dependent variables such as particle size, percentage entrapment efficiency, and percentage drug release were ascertained using the Box-Behnken design.

Results

The drug-release chitosan-coated liposomes were reported to have a particle size distribution, entanglement efficiency, and 84%, respectively, of 191 ± 34.71 nm, 94 ± 2.71% and 94 ± 2.71%. According to in vitro investigations, liposomes as a delivery system for the nasal route provided a more sustained drug release than the oral dosing form.

Conclusions

The intranasal administration of venlafaxine liposomal vesicles effectively enhanced the absolute bioavailability, retention time, and brain delivery of venlafaxine.

背景:鼻腔给药是将药物直接输送到大脑并防止首次代谢的最有效替代方案之一。载有文拉法辛的脂质体是一种生物相容性载体,可提高鼻粘膜的运输质量。目的:本研究旨在开发、配制、表征和观察所制备的制剂。方法:采用薄膜水化技术研制制剂。三个自变量(脂质、胆固醇和聚合物)之间的响应面图相互关系,四个因变量(如粒径、包封率和药物释放率)使用Box-Behnken设计确定。结果:壳聚糖包被脂质体的粒径分布为191±34.71nm,包被率为94±2.71%,包被效率为84%,与口服给药相比,脂质体作为鼻腔给药系统提供了更持久的药物释放。结论:文拉法辛脂质体囊泡的鼻内给药有效地提高了文拉法辛的绝对生物利用度、保留时间和脑给药。
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引用次数: 0
In Vitro Inhibition of Evaporation with Perfluorohexyloctane, an Eye Drop for Dry Eye Disease 干眼病滴眼液全氟己辛烷体外抑制蒸发作用的研究
IF 1.9 Q3 MEDICINE, RESEARCH & EXPERIMENTAL Pub Date : 2023-01-01 DOI: 10.1016/j.curtheres.2023.100704
Jason Vittitow Ph.D. , Robert Kissling M.D. , Heleen DeCory Ph.D. , Douglas Borchman Ph.D.

Objective

Perfluorohexyloctane (PFHO) MIEBOTM, formerly (NOV03) is a single component, water-free eye drop approved by the Food and Drug Administration in the United States for the treatment of dry eye disease. We evaluated the in vitro inhibitory effect of PFHO on the evaporation rate (Revap) of saline.

Methods

Evaporation rates were measured gravimetrically at 25°C or 35°C. The evaporation rate (Revap) of phosphate-buffered saline (PBS) was measured following the application of 11-200 µL PFHO or 100 µL artificial tears (Soothe XP [Bausch + Lomb, Bridgewater, New Jersey], Systane Balance [Alcon, Fort Worth, Texas], and Systane Ultra [Alcon]). The effect of PFHO on the Revap of PBS was further evaluated following the addition of 50 mg/mL mucin to PBS and compared with that of meibum lipid collected from a 68 year-old White volunteer.

Results

At 25°C the mean (SEM) Revap of PBS alone or PFHO alone was 4.06 (0.06) and 0.137 (0.004) µm/min, respectively. Layering 100 µL PFHO over PBS inhibited the Revap of PBS by 81% (P < 0.0001), whereas artificial tears had no effect. The presence of mucin attenuated the inhibition of the Revap of PBS by PFHO by 17% (P < 0.0001). At 35°C, the Revap of PBS was inhibited by 88% when layering 100 µL PFHO over PBS and 28% when applying a single 11 µL drop of PFHO (P value < 0.0001 for both). Meibum lipid inhibited the Revap of PBS by 8% at this temperature, whereas the combination of a drop of PFHO plus meibum inhibited the Revap of PBS by 34%.

Conclusions

PFHO significantly inhibited the Revap of saline in this in vitro model. The data support the idea that PHFO may form an antievaporative layer on the tear film surface and may be a functional substitute for the native tear-film lipid layer in patients with dry eye disease.

目的全氟己基辛烷(PFHO)MIEBOTM,原名(NOV03),是经美国食品药品监督管理局批准用于治疗干眼病的单组分无水滴眼液。我们评估了PFHO对盐水蒸发速率(Revap)的体外抑制作用。方法在25°C或35°C下用重力法测定蒸发率。在施用11-200µL PFHO或100µL人工泪液(Soothe XP[Bausch + Lomb,Bridgewater,New Jersey]、Systane Balance[Alcon,Fort Worth,Texas]和Systane Ultra[Alcon])。在向PBS中添加50mg/mL粘蛋白后,进一步评估PFHO对PBS Revap的影响,并与从68岁的白人志愿者收集的meibum脂质的影响进行比较。结果在25°C下,单独PBS或单独PFHO的平均(SEM)Revap分别为4.06(0.06)和0.137(0.004)µm/min。在PBS上分层100µL PFHO可将PBS的Revap抑制81%(P<;0.0001),而人工泪液没有效果。粘蛋白的存在使PFHO对PBS Revap的抑制作用减弱了17%(P<;0.0001)。在35°C下,当在PBS上分层100µL PFHO时,PBS的Revap抑制了88%,当单滴11µL PFHO时,抑制了28%(两者的P值均<;0.0001。在该温度下,Meibum脂质抑制PBS的Revap达8%,而一滴PFHO加Meibum的组合抑制了PBS的Revap达34%。结论sPFHO对生理盐水Revap有明显的抑制作用。该数据支持PHFO可能在泪膜表面形成抗蒸发层的观点,并可能在干眼症患者中作为天然泪膜脂质层的功能替代品。
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引用次数: 2
Preclinical Assessment of Tissue Effects by Gastrointestinal Endoscope Tip Temperature 胃肠道内窥镜尖端温度对组织效应的临床前评估
IF 1.9 Q3 MEDICINE, RESEARCH & EXPERIMENTAL Pub Date : 2023-01-01 DOI: 10.1016/j.curtheres.2023.100693
Luise Jäger MSc , Enrique Morales-Orcajo PhD , Anna Gager Mag. med. vet. , Anke Bader (Dr) , Anja Dillinger Dipl.-Ing. , Andreas Blutke (Prof Dr)

Background

Endoscope tips are heated by their electrical and illuminating components. During the procedure, they might get in close or even direct contact with intestinal tissues.

Objective

To assess endoscope tip and tissue temperature as well as histopathologic changes of gastrointestinal (GI) tissues when exposed to the heated tip of GI endoscopes.

Methods

The endoscope tip temperatures of four GI endoscopes were measured for 30 minutes in a temperature-controlled chamber. The temperature of ex vivo porcine GI tissues was measured for 5-, 15-, and 120-minute exposure to endoscope tips within a climate chamber to control environmental factors (simulation of fever as worst-case). Exposed tissues were histopathologically examined afterward. Control samples included untreated mucosa, tissue samples exposed to endoscope tips for 120 minutes, as well as tissue samples thermally coagulated with a bipolar high-frequency probe.

Results

Actual endoscope tip temperatures of 59 to 86°C, dependent on the endoscope type, were measured. After 10 to 15 minutes, the maximum temperatures were reached. Maximum tissue temperatures of 44 to 46°C for 5 and 15 minutes, as well as up to 50°C for 120 minutes, were recorded dependent on tissue and endoscope type. No direct heat-induced histopathologic tissue alterations were observed in the 5- and 15-minute samples.

Conclusions

Both clinically relevant and a worst-case control were tested. Even though elevated temperatures were recorded, no heat-related tissue alterations were detected. This overall supports the safety profile of GI endoscopy; however, the study findings are limited by the ex vivo setting (no metabolic tissue alterations accessible, no blood flow) and small sample number.

背景内窥镜尖端由其电气和照明组件加热。在手术过程中,它们可能会与肠道组织密切接触,甚至直接接触。目的评价胃肠道(GI)内窥镜尖端受热后的组织温度和组织病理学变化。方法在温度控制室中对四个胃肠道内窥镜的内窥镜尖端温度进行30分钟的测量。测量离体猪胃肠道组织在气候室内暴露于内窥镜尖端5分钟、15分钟和120分钟的温度,以控制环境因素(最坏情况下模拟发烧)。随后对暴露的组织进行组织病理学检查。对照样品包括未经处理的粘膜、暴露于内窥镜尖端120分钟的组织样品,以及用双极高频探针热凝固的组织样品。结果根据内窥镜类型,测量到实际内窥镜尖端温度为59至86°C。10至15分钟后,达到最高温度。根据组织和内窥镜类型,记录了5分钟和15分钟内44至46°C的最高组织温度,以及120分钟内最高50°C的组织温度。在5分钟和15分钟的样本中没有观察到直接热诱导的组织病理学组织改变。结论测试了临床相关性和最坏情况对照。即使记录到温度升高,也没有检测到与热相关的组织变化。这总体上支持胃肠道内窥镜的安全性;然而,研究结果受到离体环境(无代谢组织改变,无血流)和少量样本的限制。
{"title":"Preclinical Assessment of Tissue Effects by Gastrointestinal Endoscope Tip Temperature","authors":"Luise Jäger MSc ,&nbsp;Enrique Morales-Orcajo PhD ,&nbsp;Anna Gager Mag. med. vet. ,&nbsp;Anke Bader (Dr) ,&nbsp;Anja Dillinger Dipl.-Ing. ,&nbsp;Andreas Blutke (Prof Dr)","doi":"10.1016/j.curtheres.2023.100693","DOIUrl":"10.1016/j.curtheres.2023.100693","url":null,"abstract":"<div><h3>Background</h3><p>Endoscope tips are heated by their electrical and illuminating components. During the procedure, they might get in close or even direct contact with intestinal tissues.</p></div><div><h3>Objective</h3><p>To assess endoscope tip and tissue temperature as well as histopathologic changes of gastrointestinal (GI) tissues when exposed to the heated tip of GI endoscopes.</p></div><div><h3>Methods</h3><p>The endoscope tip temperatures of four GI endoscopes were measured for 30 minutes in a temperature-controlled chamber. The temperature of ex vivo porcine GI tissues was measured for 5-, 15-, and 120-minute exposure to endoscope tips within a climate chamber to control environmental factors (simulation of fever as worst-case). Exposed tissues were histopathologically examined afterward. Control samples included untreated mucosa, tissue samples exposed to endoscope tips for 120 minutes, as well as tissue samples thermally coagulated with a bipolar high-frequency probe.</p></div><div><h3>Results</h3><p>Actual endoscope tip temperatures of 59 to 86°C, dependent on the endoscope type, were measured. After 10 to 15 minutes, the maximum temperatures were reached. Maximum tissue temperatures of 44 to 46°C for 5 and 15 minutes, as well as up to 50°C for 120 minutes, were recorded dependent on tissue and endoscope type. No direct heat-induced histopathologic tissue alterations were observed in the 5- and 15-minute samples.</p></div><div><h3>Conclusions</h3><p>Both clinically relevant and a worst-case control were tested. Even though elevated temperatures were recorded, no heat-related tissue alterations were detected. This overall supports the safety profile of GI endoscopy; however, the study findings are limited by the ex vivo setting (no metabolic tissue alterations accessible, no blood flow) and small sample number.</p></div>","PeriodicalId":10920,"journal":{"name":"Current Therapeutic Research-clinical and Experimental","volume":"98 ","pages":"Article 100693"},"PeriodicalIF":1.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/e3/c8/main.PMC9937900.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10774204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Review of the Categorizations of Mild, Moderate, and Severe Bacterial Keratitis Ulcers and Day-1 Treatment Regimen When Using the Topical Fluoroquinolones 0.3% Ciprofloxacin and 0.3% Ofloxacin 轻度、中度和重度细菌性角膜炎溃疡的分类及局部使用氟喹诺酮类药物0.3%环丙沙星和0.3%氧氟沙星第1天治疗方案的综述
IF 1.9 Q3 MEDICINE, RESEARCH & EXPERIMENTAL Pub Date : 2023-01-01 DOI: 10.1016/j.curtheres.2023.100729
John Graham Pearce PhD , Ozge Sarac MD , Ted Maddess PhD

Background

There are published suggestions that bacterial keratitis (BK) can be classified as mild, moderate, or severe and that the day-1 antibiotic drop regimen may differ for each category using the topical second-generation fluoroquinolones 0.3% ciprofloxacin and 0.3% ofloxacin (2FQ). The classification criteria are not consistently defined and the suggested regimens are often unreferenced and so here, the evidence base for applying such regimens in clinical practice is examined.

Objective

To examine the evidence base regarding the categorization criteria used for BK and determine whether any evidence exists to support suggestions that different day-1 treatment regimen using the 2FQ may be applied based on any assigned categorization.

Methods

The literature on BK treatment was reviewed, as were the clinical studies involving the commercially available 2FQ. All statements pertaining to classification and treatment paradigms involving BK were then collated and reviewed, as were the methodologies employed in the 2FQ clinical studies.

Results

There have been no clinical trials using the 2FQ, or indeed any other topical antibiotics, which have used different day-1 drop regimen depending on the size, depth, and location of the ulcer or for ulcers classified as mild, moderate, or severe. Thus, there is no evidence to support the suggestion that a lower number of drops on day 1 is as effective as a higher number on categorized BK ulcers.

Conclusions

No standardized method of categorizing BK was found, and there is no evidence to support the contention that mild, moderate, or smaller BK ulcers should be treated any differently to larger or severe ulcers on day 1. The manufacturers of 2FQ do not supply different treatment regimens for different ulcer sizes and severity categories. When using the 2FQ, all BK ulcers should be treated equally in line with the manufacturers’ recommended day-1 treatment regimen.

已有研究表明细菌性角膜炎(BK)可分为轻度、中度或重度,并且第1天的抗生素滴药方案可能因不同类别而不同,局部使用第二代氟喹诺酮类药物0.3%环丙沙星和0.3%氧氟沙星(2FQ)。分类标准没有一致的定义,建议的方案往往没有参考,因此在这里,在临床实践中应用这些方案的证据基础进行了检查。目的检查BK分类标准的证据基础,确定是否有证据支持根据任何指定的分类采用不同的第1天治疗方案使用2FQ。方法回顾有关BK治疗的文献,以及市售2FQ的临床研究。所有涉及BK的分类和治疗范例的陈述,以及在2FQ临床研究中使用的方法,随后被整理和审查。结果:目前尚无临床试验使用2FQ或任何其他局部抗生素,根据溃疡的大小、深度和位置或轻度、中度或重度溃疡使用不同的第1天滴药方案。因此,没有证据支持这样的建议,即第1天较少的滴剂数量与较多的滴剂数量对分类BK溃疡同样有效。结论:没有发现标准化的BK分类方法,也没有证据支持轻度、中度或较小的BK溃疡在第1天应与较大或严重溃疡区别对待的观点。2FQ的制造商不针对不同的溃疡大小和严重程度类别提供不同的治疗方案。使用2FQ时,所有BK溃疡应按照制造商推荐的第1天治疗方案进行平等治疗。
{"title":"A Review of the Categorizations of Mild, Moderate, and Severe Bacterial Keratitis Ulcers and Day-1 Treatment Regimen When Using the Topical Fluoroquinolones 0.3% Ciprofloxacin and 0.3% Ofloxacin","authors":"John Graham Pearce PhD ,&nbsp;Ozge Sarac MD ,&nbsp;Ted Maddess PhD","doi":"10.1016/j.curtheres.2023.100729","DOIUrl":"https://doi.org/10.1016/j.curtheres.2023.100729","url":null,"abstract":"<div><h3>Background</h3><p>There are published suggestions that bacterial keratitis (BK) can be classified as mild, moderate, or severe and that the day-1 antibiotic drop regimen may differ for each category using the topical second-generation fluoroquinolones 0.3% ciprofloxacin and 0.3% ofloxacin (2FQ). The classification criteria are not consistently defined and the suggested regimens are often unreferenced and so here, the evidence base for applying such regimens in clinical practice is examined.</p></div><div><h3>Objective</h3><p>To examine the evidence base regarding the categorization criteria used for BK and determine whether any evidence exists to support suggestions that different day-1 treatment regimen using the 2FQ may be applied based on any assigned categorization.</p></div><div><h3>Methods</h3><p>The literature on BK treatment was reviewed, as were the clinical studies involving the commercially available 2FQ. All statements pertaining to classification and treatment paradigms involving BK were then collated and reviewed, as were the methodologies employed in the 2FQ clinical studies.</p></div><div><h3>Results</h3><p>There have been no clinical trials using the 2FQ, or indeed any other topical antibiotics, which have used different day-1 drop regimen depending on the size, depth, and location of the ulcer or for ulcers classified as mild, moderate, or severe. Thus, there is no evidence to support the suggestion that a lower number of drops on day 1 is as effective as a higher number on categorized BK ulcers.</p></div><div><h3>Conclusions</h3><p>No standardized method of categorizing BK was found, and there is no evidence to support the contention that mild, moderate, or smaller BK ulcers should be treated any differently to larger or severe ulcers on day 1. The manufacturers of 2FQ do not supply different treatment regimens for different ulcer sizes and severity categories. When using the 2FQ, all BK ulcers should be treated equally in line with the manufacturers’ recommended day-1 treatment regimen.</p></div>","PeriodicalId":10920,"journal":{"name":"Current Therapeutic Research-clinical and Experimental","volume":"99 ","pages":"Article 100729"},"PeriodicalIF":1.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0011393X23000383/pdfft?md5=1edc409139e75389d761d6f97ccff393&pid=1-s2.0-S0011393X23000383-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138484381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Editorial: Publishing in 2023 and Beyond 社论:2023年及以后的出版
IF 1.9 Q3 MEDICINE, RESEARCH & EXPERIMENTAL Pub Date : 2023-01-01 DOI: 10.1016/j.curtheres.2023.100706
Catherine M. Sherwin PhD
{"title":"Editorial: Publishing in 2023 and Beyond","authors":"Catherine M. Sherwin PhD","doi":"10.1016/j.curtheres.2023.100706","DOIUrl":"10.1016/j.curtheres.2023.100706","url":null,"abstract":"","PeriodicalId":10920,"journal":{"name":"Current Therapeutic Research-clinical and Experimental","volume":"98 ","pages":"Article 100706"},"PeriodicalIF":1.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/ad/ab/main.PMC10293662.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9739884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hemoglobin and End-Organ Damage in Individuals with Sickle Cell Disease 镰状细胞病患者的血红蛋白和终末器官损伤
IF 1.9 Q3 MEDICINE, RESEARCH & EXPERIMENTAL Pub Date : 2023-01-01 DOI: 10.1016/j.curtheres.2023.100696
William B. Ershler MD , Laura M. De Castro MD, MHSc , Zahra Pakbaz MD , Aaron Moynahan MA , Derek Weycker PhD , Thomas E. Delea MSIA , Irene Agodoa MD , Ze Cong PhD

Background

Sickle cell disease (SCD) is an inherited, chronic, multifaceted blood disorder. Patients with SCD develop anemia, which has been associated with end-organ damage (EOD).

Objectives

This retrospective, observational, repeated-measures study systematically characterizes the relationship between hemoglobin (Hb) level and EOD in adolescent and adult patients with SCD.

Methods

The study population comprised patients with SCD aged ≥12 years with available Hb data from a US provider-centric health care database. For each patient, each Hb value over time was included as a separate observation. Study outcomes—the onset of any new EOD, including chronic kidney disease, pulmonary hypertension, stroke, and leg ulcer—were ascertained during the 1-year period after each Hb assessment. The association between Hb levels and risk of new EOD was estimated using multivariable generalized estimating equations.

Results

A total of 16,043 unique patients with SCD contributed 44,913 observations. Adjusted odds of any EOD during the 1-year follow-up were significantly lower with higher Hb level. Risk reductions with higher Hb levels for chronic kidney disease, pulmonary hypertension, and leg ulcer were comparable. The risk of new EOD was significantly lower among adolescent and adult patients with higher Hb levels.

Conclusions

In patients with SCD, higher Hb levels are associated with a reduced risk of developing EOD. Therapeutic strategies that result in higher Hb levels may offer clinical and economic value for patients with SCD. (Curr Ther Res Clin Exp. 2023; 84:XXX–XXX)

镰状细胞病是一种遗传性、慢性、多方面的血液病。SCD患者会出现贫血,这与末端器官损伤(EOD)有关,重复测量研究系统地描述了青少年和成年SCD患者的血红蛋白(Hb)水平与EOD之间的关系。方法研究人群包括年龄≥12岁的SCD患者,其Hb数据来自美国以提供者为中心的医疗保健数据库。对于每个患者,随时间变化的每个Hb值都作为单独的观察结果。研究结果——任何新的EOD的发作,包括慢性肾脏疾病、肺动脉高压、中风和腿部溃疡——都是在每次Hb评估后的一年内确定的。使用多变量广义估计方程估计Hb水平与新EOD风险之间的相关性。结果16043例SCD患者共进行了44913次观察。Hb水平越高,1年随访期间任何EOD的调整后几率越低。Hb水平升高对慢性肾脏疾病、肺动脉高压和腿部溃疡的风险降低具有可比性。Hb水平较高的青少年和成年患者发生新EOD的风险明显较低。结论SCD患者血清Hb水平越高,发生EOD的风险越低。导致Hb水平升高的治疗策略可能为SCD患者提供临床和经济价值。(Curr Ther Res Clin Exp.2023;84:XXX–XXX)
{"title":"Hemoglobin and End-Organ Damage in Individuals with Sickle Cell Disease","authors":"William B. Ershler MD ,&nbsp;Laura M. De Castro MD, MHSc ,&nbsp;Zahra Pakbaz MD ,&nbsp;Aaron Moynahan MA ,&nbsp;Derek Weycker PhD ,&nbsp;Thomas E. Delea MSIA ,&nbsp;Irene Agodoa MD ,&nbsp;Ze Cong PhD","doi":"10.1016/j.curtheres.2023.100696","DOIUrl":"10.1016/j.curtheres.2023.100696","url":null,"abstract":"<div><h3>Background</h3><p>Sickle cell disease (SCD) is an inherited, chronic, multifaceted blood disorder. Patients with SCD develop anemia, which has been associated with end-organ damage (EOD).</p></div><div><h3>Objectives</h3><p>This retrospective, observational, repeated-measures study systematically characterizes the relationship between hemoglobin (Hb) level and EOD in adolescent and adult patients with SCD<em>.</em></p></div><div><h3>Methods</h3><p>The study population comprised patients with SCD aged ≥12 years with available Hb data from a US provider-centric health care database. For each patient, each Hb value over time was included as a separate observation. Study outcomes—the onset of any new EOD, including chronic kidney disease, pulmonary hypertension, stroke, and leg ulcer—were ascertained during the 1-year period after each Hb assessment. The association between Hb levels and risk of new EOD was estimated using multivariable generalized estimating equations.</p></div><div><h3>Results</h3><p>A total of 16,043 unique patients with SCD contributed 44,913 observations. Adjusted odds of any EOD during the 1-year follow-up were significantly lower with higher Hb level. Risk reductions with higher Hb levels for chronic kidney disease, pulmonary hypertension, and leg ulcer were comparable. The risk of new EOD was significantly lower among adolescent and adult patients with higher Hb levels.</p></div><div><h3>Conclusions</h3><p>In patients with SCD, higher Hb levels are associated with a reduced risk of developing EOD. Therapeutic strategies that result in higher Hb levels may offer clinical and economic value for patients with SCD. (<em>Curr Ther Res Clin Exp</em>. 2023; 84:XXX–XXX)</p></div>","PeriodicalId":10920,"journal":{"name":"Current Therapeutic Research-clinical and Experimental","volume":"98 ","pages":"Article 100696"},"PeriodicalIF":1.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/d8/74/main.PMC10025127.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9166593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effectiveness of Fortified Garlic Extract Oral Capsules as Adjuvant Therapy in Hospitalized Patients with Coronavirus Disease 2019: A Triple-Blind Randomized Controlled Clinical Trial 强化大蒜提取物口服胶囊辅助治疗2019冠状病毒病住院患者的有效性:一项三盲随机对照临床试验
IF 1.9 Q3 MEDICINE, RESEARCH & EXPERIMENTAL Pub Date : 2023-01-01 DOI: 10.1016/j.curtheres.2023.100699
Mohammad Reza Taghavi MD , Taraneh Tavanaei Tamanaei MD , Mohammad Bagher Oghazian PharmD, BCPS , Erfan Tavana MD , Samaneh Mollazadeh PhD , Parastoo Niloofar MSc , Sahar Oghazian MD , Amin Hoseinzadeh BSc , Amirmohammad Hesari BSc , Mohammad Ansari Mohseni PharmD , Sina Rezaei PharmD , Mahdi Haresabadi MSc, PhD

Background

Herbal medicines have been extensively used to treat coronavirus disease 2019 (COVID-19). Garlic, known to exert antiviral and anti-inflammatory effects, can be coadministered with standard treatments to combat COVID-19.

Objectives

The aim of the study was to evaluate the efficacy and safety profile of Gallecina oral capsules (Samisaz Pharmaceutical Company, Mashhad, Iran), a fortified garlic extract, as adjunctive therapy to improve the clinical status and symptoms in noncritically ill patients hospitalized for COVID-19.

Methods

This triple-blind randomized, placebo-controlled clinical trial was conducted on noncritically ill patients with COVID-19 hospitalized in the nonintensive care wards of Imam Hassan Hospital. Patients received remdesivir plus 90 mg Gallecina capsule or a placebo every 8 hours for 5 days or until discharge. The clinical status, respiratory symptoms, and laboratory parameters were recorded during the study period.

Results

Patients were enrolled between April 24 and July 18, 2021. Data from 72 patients in the Gallecina group and 69 patients in the placebo group were analyzed. Oxygen saturation, C-reactive protein levels, and the distribution of respiratory distress and cough were similar between groups on the day of discharge. Although body temperature was significantly lower in the Gallecina group than that in the placebo group on the day of discharge (P = 0.04), it was within the normal range for both groups. The proportion of patients requiring supplemental oxygen for at least 1 day during the study was significantly reduced in the Gallecina group on days 3 and 4 and the day of discharge (P < 0.05). Gastrointestinal complaints were more prevalent in the Gallecina group than in the placebo group but the difference was not statistically significant (P = 0.12).

Conclusions

There was no significant effect on the primary outcome of clinical status on study day 6. Although the proportion of Gallecina-treated patients who needed supplemental oxygen significantly decreased on days 3 and 4 and the day of discharge, there was no significant difference between the groups on other days. The possible beneficial effects on oxygen requirements in noncritically ill COVID-19 patients may warrant further investigation. (Curr Ther Res Clin Exp. 2023; 84:XXX–XXX). Clinical trial registration: IRCT20201111049347N1.

背景草药已被广泛用于治疗2019冠状病毒病(新冠肺炎)。众所周知,大蒜具有抗病毒和抗炎作用,可以与标准治疗方法联合使用以对抗COVID-19。目的本研究的目的是评估Gallecina口服胶囊(Samisaz Pharmaceutical Company,Mashhad,Iran)的疗效和安全性,方法对伊玛目哈桑医院非重症监护病房住院的新冠肺炎非危重症患者进行三盲随机、安慰剂对照临床试验。患者每8小时接受一次瑞德西韦加90 mg加列西纳胶囊或安慰剂治疗,持续5天或直至出院。在研究期间记录临床状态、呼吸道症状和实验室参数。结果患者入选时间为2021年4月24日至7月18日。对Gallecina组72名患者和安慰剂组69名患者的数据进行了分析。出院当天,各组之间的血氧饱和度、C反应蛋白水平以及呼吸窘迫和咳嗽的分布相似。尽管出院当天Gallecina组的体温明显低于安慰剂组(P = 0.04)均在正常范围内。Gallecina组在研究期间需要补充氧气至少1天的患者比例在第3、4天和出院当天显著降低(P<;0.05) = 0.12)。结论研究第6天对临床状态的主要结果没有显著影响。尽管Gallecina治疗的需要补充氧气的患者比例在第3天和第4天以及出院当天显著下降,但在其他日子,两组之间没有显著差异。新冠肺炎非危重患者对氧气需求可能产生的有益影响可能需要进一步调查。(Curr Ther Res Clin Exp.2023;84:XXX–XXX)。临床试验注册号:IRCT2020101111049347N1。
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引用次数: 2
Treatment of Chronic Constipation using Elobixibat in a Real-World Setting: A Retrospective Cohort Study using an Electronic Medical Records Database in Japan 在现实世界中使用依洛比昔巴治疗慢性便秘:一项使用日本电子病历数据库的回顾性队列研究
IF 1.9 Q3 MEDICINE, RESEARCH & EXPERIMENTAL Pub Date : 2023-01-01 DOI: 10.1016/j.curtheres.2023.100724
Hisanori Masaki MS , Koji Shimamoto MS , Shoichiro Inokuchi MD, PhD , Sonoko Ishizaki MS

Background

Chronic constipation is a common condition affecting people of all ages; therefore, the socioeconomic burden of chronic constipation is nonnegligible. Elobixibat (ELO), an ileal bail acid transport inhibitor, was launched in Japan in 2018. However, evidence of its use in diverse populations is limited.

Objectives

This study aimed to evaluate the prescription of ELO, risk factors associated with ELO discontinuation, and the continuation of stimulants or saline laxatives during ELO treatment in a real-world setting using an extensive electronic medical records database that primarily includes data from acute-care hospitals.

Methods

Data of patients prescribed for ELO from April 1, 2018, to March 31, 2022, were extracted from the database. The discontinuation of ELO and stimulant or saline laxatives during ELO treatment was evaluated using the Kaplan-Meier method. The Cox proportional hazards model evaluated risk factors associated with laxative discontinuation.

Results

In total, 11,062 patients were evaluated. The rate of ELO discontinuation within 360 days of initiation was 78.7%. Hospitalized at the ELO initiation, stage 5 chronic kidney disease, and diagnosis of constipation by departments of obstetrics and gynecology or by departments of malignant neoplasm were identified as risk factors for discontinuation. Diagnosis of constipation, diabetes mellitus, Parkinson's disease, and previous laxative treatment was associated with a lower risk of ELO discontinuation. The prescription rate of stimulants and saline laxatives markedly decreased after ELO initiation; furthermore, nearly half of patients who were continuously prescribed ELO discontinued these laxatives within 360 days.

Conclusions

The discontinuation of ELO was associated with various factors and using ELO may be beneficial in the withdrawal of concurrent stimulants and saline laxatives. These findings may help effectively manage chronic constipation.

背景:慢性便秘是一种影响所有年龄段人群的常见疾病;因此,慢性便秘的社会经济负担是不可忽视的。Elobixibat (ELO)是一种回肠bail酸转运抑制剂,于2018年在日本上市。然而,它在不同人群中使用的证据有限。本研究旨在评估ELO的处方、与ELO停药相关的风险因素,以及在ELO治疗期间继续使用兴奋剂或生理盐水泻药的情况,该研究使用了一个广泛的电子病历数据库,主要包括来自急诊医院的数据。方法从数据库中提取2018年4月1日至2022年3月31日ELO处方患者的数据。使用Kaplan-Meier法评估ELO治疗期间ELO和兴奋剂或生理盐水泻药的停药情况。Cox比例风险模型评估了与停药相关的危险因素。结果共评估11,062例患者。起始治疗360天内ELO停药率为78.7%。ELO开始时住院、5期慢性肾脏疾病、妇产科或恶性肿瘤部门诊断为便秘被确定为停药的危险因素。诊断为便秘、糖尿病、帕金森病和既往泻药治疗的患者,其ELO停药的风险较低。ELO开始后,兴奋剂和生理盐水泻药的处方率明显降低;此外,近一半持续服用ELO的患者在360天内停用了这些泻药。结论ELO的停药与多种因素有关,使用ELO可能有利于同时停用兴奋剂和生理盐水泻药。这些发现可能有助于有效地控制慢性便秘。
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引用次数: 0
A Combination of Gamma-Aminobutyric Acid, Glutamic Acid, Calcium, Thiamine, Pyridoxine, and Cyanocobalamin vs Ginger Extract in the Management of Chronic Motion Sickness: A Clinical Evaluation γ -氨基丁酸、谷氨酸、钙、硫胺素、吡哆醇和氰钴胺与生姜提取物联合治疗慢性运动病的临床评价
IF 1.9 Q3 MEDICINE, RESEARCH & EXPERIMENTAL Pub Date : 2023-01-01 DOI: 10.1016/j.curtheres.2023.100719
Carlos P. Nunes MD , Claudio Rodrigues MD , Mendel Suchmacher MD , Claudia Regina Esteves MD , Karin Gonçalves PhD , Hélio Rzetelna MD , Rafael V. Rodrigues MD , Luciana Regina de Vasconcelos MD , Spyros G.E. Mezitis MD, PhD , Heros Rabelo MSc , Renato Kaufmann MD, PhD , Fernanda Schwarz MChem , Henrique Goldberg (In Memoriam) MD , Aline Sintoveter MD , Mauro Geller MD, PhD

Background

Motion sickness (kinetosis) is a common and temporarily incapacitant ailment, manageable with behavioral as well as pharmacological measures.

Objective

To assess the effectiveness and safety of a combination of gamma-aminobutyric acid, glutamic acid, calcium, thiamine, pyridoxine, and cyanocobalamin (Group A) (n = 170) and extract of Zingiber officinale (ginger) (Group B) (n = 165) in the management of chronic complaints consistent with motion sickness.

Methods

Both groups were tested according to the following end points, under self-paired as well as comparative study designs: reduction of ≥20 score points in the total motion sickness assessment questionnaire (MSAQ) score, percentage of patients presenting a reduction of the total MSAQ score, absolute MSAQ score reduction, physician's assessment scores, final overall assessment of study medication, and willingness to continue treatment. Safety was also evaluated.

Results

There was a statistically significant better performance under both study designs for Group A (P = 0.05 using different statistical tests) in all end points. Both regimens were safe, with different neurological and gastrointestinal tolerability outcomes.

Conclusions

Group A and Group B regimens were effective and safe in the management of chronic complaints consistent with motion sickness and the Group A regimen was more effective than Group B.

运动病是一种常见的暂时性失能性疾病,可通过行为和药物措施加以控制。目的评价γ -氨基丁酸、谷氨酸、钙、硫胺素、吡哆醇和氰钴胺素(a组)(n = 170)和姜提取物(B组)(n = 165)联合治疗运动病慢性主症的有效性和安全性。方法两组均采用自配对和比较研究设计,根据以下终点进行测试:总晕动病评估问卷(MSAQ)评分降低≥20分、总MSAQ评分降低的患者百分比、绝对MSAQ评分降低、医生评估评分、最终研究药物总体评估和继续治疗的意愿。安全性也进行了评估。结果两种研究设计下,a组在各终点的疗效均有统计学意义上的提高(P = 0.05,采用不同的统计学检验)。两种方案都是安全的,只是神经和胃肠道耐受性结果不同。结论A组和B组治疗运动病慢性主诉有效、安全,且A组治疗效果优于B组。
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引用次数: 0
期刊
Current Therapeutic Research-clinical and Experimental
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