1
|
Zhou Z, Qi J, Wu Y, Li C, Bao W, Lin X, Zhu A. Nuciferine Effectively Protects Mice against Acetaminophen-Induced Liver Injury. Antioxidants (Basel) 2023; 12:antiox12040949. [PMID: 37107324 PMCID: PMC10136285 DOI: 10.3390/antiox12040949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/13/2023] [Accepted: 04/14/2023] [Indexed: 04/29/2023] Open
Abstract
Acetaminophen (APAP) overdose still poses a major clinical challenge and is a leading cause of acute liver injury (ALI). N-acetylcysteine (NAC) is the only approved antidote to treat APAP toxicity while NAC therapy can trigger side effects including severe vomiting and even shock. Thus, new insights in developing novel therapeutic drugs may pave the way for better treatment of APAP poisoning. Previous research has reported that nuciferine (Nuci) possesses anti-inflammatory and antioxidant properties. Therefore, the objective of this study was proposed to investigate the hepatoprotective effects of Nuci and explore its underlying mechanisms. Mice were intraperitoneally (i.p.) administered with APAP (300 mg/kg) and subsequently injected with Nuci (25, 50, and 100 mg/kg, i.p.) at 30 min after APAP overdose. Then, all mice were sacrificed at 12 h after APAP challenge for further analysis. Nuci-treated mice did not show any side effects and our results revealed that treating Nuci significantly attenuated APAP-induced ALI, as confirmed by histopathological examinations, biochemical analysis, and diminished hepatic oxidative stress and inflammation. The in silico prediction and mRNA-sequencing analysis were performed to explore the underlying mechanisms of Nuci. GO and KEGG enrichment of the predicted target proteins of Nuci includes reactive oxygen species, drug metabolism of cytochrome P450 (CYP450) enzymes, and autophagy. Furthermore, the mRNA-sequencing analyses indicated that Nuci can regulate glutathione metabolic processes and anti-inflammatory responses. Consistently, we found that Nuci increased the hepatic glutathione restoration but decreased APAP protein adducts in damaged livers. Western blot analysis further confirmed that Nuci effectively promoted hepatic autophagy in APAP-treated mice. However, Nuci could not affect the expression levels of the main CYP450 enzymes (CYP1A2, CYP2E1, and CYP3A11). These results demonstrated that Nuci may be a potential therapeutic drug for APAP-induced ALI via amelioration of the inflammatory response and oxidative stress, regulation of APAP metabolism, and activation of autophagy.
Collapse
Affiliation(s)
- Zixiong Zhou
- Department of Pathology and Institute of Oncology, School of Basic Medical Sciences, Fujian Medical University, Fuzhou 350122, China
| | - Jing Qi
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fujian Medical University, Fuzhou 350122, China
| | - Yajiao Wu
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, School of Basic Medical Sciences, Fujian Medical University, Fuzhou 350122, China
| | - Chutao Li
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, School of Basic Medical Sciences, Fujian Medical University, Fuzhou 350122, China
| | - Wenqiang Bao
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, School of Basic Medical Sciences, Fujian Medical University, Fuzhou 350122, China
| | - Xiaohuang Lin
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, School of Basic Medical Sciences, Fujian Medical University, Fuzhou 350122, China
| | - An Zhu
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, School of Basic Medical Sciences, Fujian Medical University, Fuzhou 350122, China
| |
Collapse
|
2
|
Nanoparticle-Mediated Dual Targeting: An Approach for Enhanced Baicalin Delivery to the Liver. Pharmaceutics 2020; 12:pharmaceutics12020107. [PMID: 32013203 PMCID: PMC7076551 DOI: 10.3390/pharmaceutics12020107] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 01/22/2020] [Accepted: 01/26/2020] [Indexed: 01/13/2023] Open
Abstract
In this study, water-soluble chitosan lactate (CL) was reacted with lactobionic acid (LA), a disaccharide with remarkable affinity to hepatic asialoglycoprotein (ASGP) receptors, to form dual liver-targeting LA-modified-CL polymer for site-specific drug delivery to the liver. The synthesized polymer was used to encapsulate baicalin (BA), a promising bioactive flavonoid with pH-dependent solubility, into ultrahigh drug-loaded nanoparticles (NPs) via the ionic gelation method. The successful chemical conjugation of LA with CL was tested and the formulated drug-loaded LA-modified-CL-NPs were assessed in terms of particle size (PS), encapsulation efficiency (EE) and zeta potential (ZP) using full factorial design. The in vivo biodistribution and pharmacokinetics of the designed NPs were assessed using 99mTc-radiolabeled BA following oral administration to mice and results were compared to 99mTc-BA-loaded-LA-free-NPs and 99mTc-BA solution as controls. Results showed that the chemical modification of CL with LA was successfully achieved and the method of preparation of the optimized NPs was very efficient in encapsulating BA into nearly spherical particles with an extremely high EE exceeding 90%. The optimized BA-loaded-LA-modified-CL-NPs showed an average PS of 490 nm, EE of 93.7% and ZP of 48.1 mV. Oral administration of 99mTc-BA-loaded-LA-modified-CL-NPs showed a remarkable increase in BA delivery to the liver over 99mTc-BA-loaded-LA-free-CL-NPs and 99mTc-BA oral solution. The mean area under the curve (AUC0-24) estimates from liver data were determined to be 11-fold and 26-fold higher from 99mTc-BA-loaded-LA-modified-CL-NPs relative to 99mTc-BA-loaded-LA-free-CL-NPs and 99mTc-BA solution respectively. In conclusion, the outcome of this study highlights the great potential of using LA-modified-CL-NPs for the ultrahigh encapsulation of therapeutic molecules with pH-dependent/poor water-solubility and for targeting the liver.
Collapse
|
3
|
Statelova M, Goumas K, Fotaki N, Holm R, Symillides M, Reppas C, Vertzoni M. On the Design of Food Effect Studies in Adults for Extrapolating Oral Drug Absorption Data to Infants: an Exploratory Study Highlighting the Importance of Infant Food. AAPS JOURNAL 2019; 22:6. [DOI: 10.1208/s12248-019-0380-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 09/13/2019] [Indexed: 11/30/2022]
|
4
|
Stevens H, Voelker M, Gow L, MacDougall F, Bieri G. In-vivo disintegration and absorption of two fast acting aspirin tablet formulations compared to ibuprofen tablets using pharmacoscintigraphy. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.02.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
5
|
Lanza FL, Collaku A, Liu DJ. Endoscopic comparison of gastroduodenal injury with over-the-counter doses of new fast-dissolving ibuprofen and paracetamol formulations: a randomized, placebo-controlled, 4-way crossover clinical trial. Clin Exp Gastroenterol 2018; 11:169-177. [PMID: 29713191 PMCID: PMC5907787 DOI: 10.2147/ceg.s153231] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Background While gastrointestinal (GI) effects of standard ibuprofen and N-acetyl-p-aminophenol (APAP) have been reported, upper GI injury following treatment with fast-dissolving (FD) formulations of these analgesics has not been investigated. We evaluated upper GI effects of over-the-counter doses of 2 FD ibuprofen products and 1 FD-APAP product. Methods In a randomized, placebo-controlled, endoscopist-blinded, 4-way crossover study, 28 healthy subjects received FD ibuprofen 2×200 mg liquid capsules 3 times daily (TID), ibuprofen 2×200 mg tablets TID, FD-APAP 2×500 mg tablets 4 times daily (QID), and placebo 2×500 mg tablets QID for 7 days. The primary end point was gastric mucosal damage assessed by endoscopy using the Lanza scale: 0=normal stomach or proximal duodenum, 1=mucosal hemorrhages only, 2=1 or 2 erosions, 3=numerous (3-10) erosions, and 4=large number of erosions (>10) or ulcer. Secondary end points included duodenal mucosal damage (Lanza scale); gastroduodenal mucosal injury, classified as present (gastric and/or duodenal endoscopy score ≥2) or absent (gastric and/or duodenal endoscopy score <2); and number of hemorrhages, erosions, and ulcers counted separately in the stomach and duodenum. Results Significantly greater gastric mucosal injury was observed after treatment with both ibuprofen products vs FD-APAP (p<0.0001 and p=0.0095, respectively). FD-APAP showed no difference from placebo (p=0.4794). The odds of having an incidence of gastroduodenal mucosal injury were over 6 times greater from FD ibuprofen liquid capsule treatment (odds ratio [OR]=6.19, 95% confidence interval [CI]: 1.60, 23.97) and over 3 times greater from ibuprofen tablet treatment (OR=3.19, 95% CI: 0.8, 12.74) vs FD-APAP. Conclusion Treatment with 2 ibuprofen products was associated with significant gastric mucosal injury. Of the 4 treatments studied, FD ibuprofen liquid capsules had the highest risk of incidence of gastroduodenal mucosal injury. Treatment with FD-APAP did not induce any clinically or statistically significant gastroduodenal mucosal injury.
Collapse
Affiliation(s)
- Frank L Lanza
- Department of Gastroenterology, Houston Institute for Clinical Research, Houston, TX, USA
| | - Agron Collaku
- Biostatistics Department, GlaxoSmithKline Consumer Healthcare, Parsippany, NJ, USA
| | - Dongzhou J Liu
- Global Clinical Development, GlaxoSmithKline, Collegeville, PA, USA
| |
Collapse
|
6
|
Van Den Abeele J, Brouwers J, Deloose E, Tack J, Augustijns P. The Effect of Sparkling Water on Intraluminal Formulation Behavior and Systemic Drug Performance. J Pharm Sci 2017; 106:2472-2482. [DOI: 10.1016/j.xphs.2017.03.039] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 03/28/2017] [Accepted: 03/30/2017] [Indexed: 12/22/2022]
|
7
|
Hens B, Corsetti M, Spiller R, Marciani L, Vanuytsel T, Tack J, Talattof A, Amidon GL, Koziolek M, Weitschies W, Wilson CG, Bennink RJ, Brouwers J, Augustijns P. Exploring gastrointestinal variables affecting drug and formulation behavior: Methodologies, challenges and opportunities. Int J Pharm 2017; 519:79-97. [DOI: 10.1016/j.ijpharm.2016.11.063] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 11/28/2016] [Accepted: 11/29/2016] [Indexed: 12/16/2022]
|
8
|
Almukainzi M, Jamali F, Aghazadeh-Habashi A, Löbenberg R. Disease specific modeling: Simulation of the pharmacokinetics of meloxicam and ibuprofen in disease state vs. healthy conditions. Eur J Pharm Biopharm 2016; 100:77-84. [PMID: 26752427 DOI: 10.1016/j.ejpb.2015.12.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Revised: 11/01/2015] [Accepted: 12/14/2015] [Indexed: 01/13/2023]
Abstract
PURPOSE Studies have shown altered pharmacokinetic patterns (PK) in patient suffering from acute pain. Thus, we aimed to simulate pharmacokinetics of meloxicam and ibuprofen in pain and pain-free states using a physiological based software program to identify the underlining mechanistic changes for the observed differences. METHOD Published in vivo data of meloxicam and ibuprofen were used for the simulations. Two drug formulations were studied: a fast dissolving (FD) and regular release (RR) tablet formulation. The oral bioavailability was compared between these formulations in vagally suppressed rats (gastric dysfunction) and a control group. For ibuprofen additional human data of a control and post dental surgery group were used. All simulations were performed using GastroPlus™. The in vivo drug release and PK of all formulations were estimated for both drugs using the software's immediate release (IR) or gastric release (GR) models. RESULT For meloxicam, the IR model predicted the in vivo absorption in the control group after administration of the FD and RR formulations. When gastric dysfunction was induced, the IR model did not predict absorption while the GR model did for both formulations, FD and RR. For ibuprofen, the predictions were also very close for both formulations, using the IR model for the control group and the GR model for the vagally suppressed condition in rats and humans. CONCLUSIONS Gastric control of the drug release in pain/disease state was identified as the major factor causing the observed differences in the pharmacokinetics. Computer simulations of disease states can be employed to optimize drug release from dosage forms to overcome the reported shortfalls in the drug absorption.
Collapse
Affiliation(s)
- May Almukainzi
- Faculty of Pharmacy & Pharmaceutical Science, University of Alberta, Edmonton, AB, Canada
| | - Fakhreddin Jamali
- Faculty of Pharmacy & Pharmaceutical Science, University of Alberta, Edmonton, AB, Canada
| | - Ali Aghazadeh-Habashi
- Faculty of Pharmacy & Pharmaceutical Science, University of Alberta, Edmonton, AB, Canada
| | - Raimar Löbenberg
- Faculty of Pharmacy & Pharmaceutical Science, University of Alberta, Edmonton, AB, Canada.
| |
Collapse
|
9
|
Selen A, Dickinson PA, Müllertz A, Crison JR, Mistry HB, Cruañes MT, Martinez MN, Lennernäs H, Wigal TL, Swinney DC, Polli JE, Serajuddin AT, Cook JA, Dressman JB. The Biopharmaceutics Risk Assessment Roadmap for Optimizing Clinical Drug Product Performance. J Pharm Sci 2014; 103:3377-3397. [DOI: 10.1002/jps.24162] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Revised: 08/20/2014] [Accepted: 08/22/2014] [Indexed: 02/06/2023]
|
10
|
Hodges LA, Hughes A, Targett D, Durcan MJ. Does a hot drink provide faster absorption of paracetamol than a tablet? A pharmacoscintigraphic study in healthy male volunteers. Pharm Res 2014; 31:2078-85. [PMID: 24558011 PMCID: PMC4153977 DOI: 10.1007/s11095-014-1309-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Accepted: 01/14/2014] [Indexed: 11/29/2022]
Abstract
PURPOSE To investigate the hypothesis that paracetamol is absorbed faster from a hot drink than from a standard tablet using simultaneous scintigraphic imaging and pharmacokinetic sampling. METHODS Twenty-five healthy male volunteers received both paracetamol formulations in a randomised manner. The formulation administered in the first treatment arm was radiolabelled to allow scintigraphic monitoring. In both treatment arms, blood samples were taken for assessing paracetamol absorption. RESULTS Following the hot drink, paracetamol absorption was both significantly faster and greater over the first 60 min post-dose compared with the tablet, as evidenced by the median time to reach t0.25 μg/mL of 4.6 and 23.1 min, respectively, and AUC0-60 of 4668.00 and 1331.17 h*ng/mL, respectively. In addition, tmax was significantly shorter for the hot drink (median time = 1.50 h) compared with the tablet (1.99 h). However, Cmax was significantly greater following the tablet (9,077 ng/mL) compared with the hot drink (8,062 ng/mL). Onset of gastric emptying after the hot drink was significantly faster than after the standard tablet (7.9 versus 54.2 min), as confirmed scintigraphically. CONCLUSIONS Compared with a standard tablet, a hot drink provides faster absorption of paracetamol potentially due to more rapid gastric emptying.
Collapse
Affiliation(s)
- Lee Ann Hodges
- Bio-Images Research Ltd, Within Glasgow Royal Infirmary, 84 Castle Street, Glasgow, G4 0SF, UK,
| | | | | | | |
Collapse
|
11
|
Szałek E, Karbownik A, Murawa D, Połom K, Urbaniak B, Grabowski T, Wolc A, Więckiewicz A, Grześkowiak E, Kokot ZJ, Murawa P, Burchardt P, Cieśla S. The pharmacokinetics of the effervescent vs. conventional tramadol/paracetamol fixed-dose combination tablet in patients after total gastric resection. Pharmacol Rep 2014; 66:159-64. [PMID: 24905322 DOI: 10.1016/j.pharep.2013.06.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Revised: 05/26/2013] [Accepted: 06/13/2013] [Indexed: 12/21/2022]
Abstract
BACKGROUND Tramadol/paracetamol is a fixed-dose combination prescribed for the relief of moderate to severe pain. The combination acts synergistically and guarantees the rapid onset of paracetamol and the prolonged analgesic effect of tramadol with good tolerability. These drugs are often used in various formulations in the treatment of patients with postoperative pain, e.g. after stomach resection. Gastrectomy leads to pathophysiological changes within the alimentary tract, which may affect the process of drug absorption. The aim of the research was an analysis of the pharmacokinetics of tramadol/paracetamol from effervescent and conventional tablets in patients after total gastrectomy. METHODS The research was carried out on patients after gastrectomy with Roux-en-Y reconstruction. The patients received two tramadol/paracetamol fixed-dose combination tablets in a single orally administered dose of 75/650 mg (2 × 37.5/325 mg). The patients were subjected to one of the two study drug group with: I. effervescent tablet (ET) (n = 14; mean [SD] age, 63.4 [10.1] years; weight, 75.5 [15.3]kg; and BMI, 26.0 [4.6]kg/m(2)) and II. conventional tablet (CT) (n = 12; mean [SD] age, 66.8 [7.7] years; weight, 79.8 [17.8]kg; and BMI, 27.4 [5.3]kg/m(2)). Blood samples were collected within 10 h after the drug administration. The plasma concentrations of tramadol and paracetamol were measured with validated HPLC (high-performance liquid chromatography) method with UV detection. RESULTS The comparison of the paracetamol and tramadol C(max) ratio for the ET group with that of the CT group gave ratios of 1.16 [90% confidence interval (CI) 1.06, 1.27] and 0.86 (90% CI 0.72, 1.02), respectively. The comparison of the paracetamol and tramadol AUC(0-t) ratio for the ET group with that of the CT group showed ratios of 0.99 (90% CI 0.88, 1.10) and 1.00 (90% CI 0.82, 1.22), respectively. The comparison of the difference for the effervescent and conventional formulation gave an estimated decrease in t(max) of 0.5 h for paracetamol and 0.13 h for tramadol. CONCLUSIONS In view of the changes in the pharmacokinetics of paracetamol and tramadol in the patients after gastric resection for both formulations compared the conventional tablet seems to be more appropriate due to the comparable rate of absorption of both substances, higher concentrations of tramadol and comparable exposure to paracetamol.
Collapse
Affiliation(s)
- Edyta Szałek
- Department of Clinical Pharmacy and Biopharmacy, Karol Marcinkowski University of Medical Sciences Poznań, Poland.
| | - Agnieszka Karbownik
- Department of Clinical Pharmacy and Biopharmacy, Karol Marcinkowski University of Medical Sciences Poznań, Poland
| | - Dawid Murawa
- 1st Department of Surgical Oncology and General Surgery Department, Wielkopolska Cancer Centre, Poznań, Poland
| | - Karol Połom
- 1st Department of Surgical Oncology and General Surgery Department, Wielkopolska Cancer Centre, Poznań, Poland
| | - Bartosz Urbaniak
- Department of Inorganic and Analytical Chemistry, Karol Marcinkowski University of Medical Sciences, Poznań, Poland
| | | | - Anna Wolc
- Department of Animal Science, Iowa State University, IA, USA
| | - Aleksandra Więckiewicz
- Department of Clinical Pharmacy and Biopharmacy, Karol Marcinkowski University of Medical Sciences Poznań, Poland
| | - Edmund Grześkowiak
- Department of Clinical Pharmacy and Biopharmacy, Karol Marcinkowski University of Medical Sciences Poznań, Poland
| | - Zenon J Kokot
- Department of Inorganic and Analytical Chemistry, Karol Marcinkowski University of Medical Sciences, Poznań, Poland
| | - Paweł Murawa
- 1st Department of Surgical Oncology and General Surgery Department, Wielkopolska Cancer Centre, Poznań, Poland; Cancer Pathology Department, Clinic of Oncology, University of Medical Sciences, Poznań, Poland
| | - Paweł Burchardt
- Division of Cardiology-Intensive Care, University of Medical Sciences, Poznań, Poland
| | - Sławomir Cieśla
- Department of General Surgery, Leszno Regional Hospital, Leszno, Poland
| |
Collapse
|
12
|
Yue Y, Collaku A, Brown J, Buchanan WL, Reed K, Cooper SA, Otto J. Efficacy and speed of onset of pain relief of fast-dissolving paracetamol on postsurgical dental pain: two randomized, single-dose, double-blind, placebo-controlled clinical studies. Clin Ther 2013; 35:1306-20. [PMID: 23972577 DOI: 10.1016/j.clinthera.2013.07.422] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Revised: 07/12/2013] [Accepted: 07/19/2013] [Indexed: 11/24/2022]
Abstract
BACKGROUND Paracetamol (APAP), also known as acetaminophen, is the most commonly used over-the-counter analgesic for the treatment of mild-to-moderate pain. However, the speed of onset of pain relief is limited mainly to the standard, immediate-release formulation. Efficacy and speed of onset of pain relief are critical in acute pain situations such as postsurgical dental pain, because reducing pain can improve clinical outcome and reduce the risk of transition from acute pain to more chronic pain. Efficacy and rapid onset also reduce the risk of excessive dosing with the analgesic. OBJECTIVE We sought to investigate the dose-response efficacy and speed of onset of pain relief of a fast-dissolving APAP formulation compared with lower doses of APAP and placebo in dental patients after impacted third molar extraction. METHODS Two single-center, single-dose, randomized, placebo-controlled, double-blind, double-dummy, parallel-group studies (Study I and Study II) were conducted to evaluate the efficacy and speed of onset of pain relief of different doses of a fast-dissolving APAP tablet (FD-APAP), standard APAP, and placebo in patients with postsurgical dental pain following third molar extraction. In Study I, a single dose of FD-APAP 1000 mg, FD-APAP 500 mg, or placebo was given to 300 patients; in Study II, a single dose of FD-APAP 1000 mg, standard APAP 650 mg, or placebo was given to 401 patients. All 701 patients from both studies were included in the analysis and safety assessment. RESULTS FD-APAP 1000 mg demonstrated significantly greater effect compared with FD-APAP 500 mg, APAP 650 mg, and placebo for all efficacy measurements, including sum of pain relief and pain intensity difference, total pain relief, sum of pain intensity difference, pain intensity difference, and pain relief score during 6 hours after the dose. Onset of confirmed first perceptible relief in subjects treated with FD-APAP 1000 mg was 15 minutes, which was 32% and 25% significantly shorter than onset of pain relief of FD-APAP 500 mg (22 minutes) and standard APAP 650 mg (20 minutes), respectively. FD-APAP 500 mg and APAP 650 mg demonstrated efficacy over placebo for most of the measurements; however, their effects were significantly lower and lasted for a shorter period of time than for FD-APAP 1000 mg. All study treatments were well tolerated. CONCLUSIONS FD-APAP 1000 mg tablets demonstrated efficacy over placebo. Also, FD-APAP 1000 mg had significantly superior effect, faster onset, and longer duration of pain relief compared with FD-APAP 500 mg and APAP 650 mg tablets.
Collapse
Affiliation(s)
- Yong Yue
- Medical Affairs, GlaxoSmithKline Consumer Healthcare, Parsippany, New Jersey.
| | | | | | | | | | | | | |
Collapse
|
13
|
Gamma scintigraphy in the analysis of ketoprofen behaviour from matrix tablets. Int J Pharm 2013; 448:298-304. [DOI: 10.1016/j.ijpharm.2013.03.043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2012] [Revised: 03/16/2013] [Accepted: 03/19/2013] [Indexed: 11/23/2022]
|
14
|
Smith S, Collaku A, Heaslip L, Yue Y, Starkey YY, Clarke G, Kronfeld N. A new rapidly absorbed paediatric paracetamol suspension. A six-way crossover pharmacokinetic study comparingthe rate and extent of paracetamol absorption from a new paracetamol suspension with two marketed paediatric formulations. Drug Dev Ind Pharm 2011; 38:372-9. [DOI: 10.3109/03639045.2011.605141] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|