Parallel-Group,Double-Blind,Double-Dummy,Superiority Study of Etoricoxib90mg/ Cyclobenzaprine15mg From Eurofarma Versus Etoricoxib90mg (Arcoxia®) and Cyclobenzaprine15mg (XL - Mitrul®) for Muscle Spasm After Third Molar Extraction in Brazil

Etoricoxib and cyclobenzaprine hydrochloride are active pharmaceutical ingredients (APIs) already registered in the country as mono-drugs. These products are widely used for the proposed indications, and their safety and efficacy profiles are known in daily clinical practice. Once the absence of a pharmacokinetic interaction between etoricoxib and cyclobenzaprine hydrochloride has been confirmed in relative bioavailability studies, this phase 3 study will be conducted for demonstrating the superiority of the new FDC over etoricoxib 90 mg (Arcoxia®) and cyclobenzaprine hydrochloride 15 mg (XL - Mitrul®) in the treatment of moderate to serious pain associated with muscle spasm. The purpose is to provide a new, effective, and safe therapeutic option to address these cases. Etoricoxib and cyclobenzaprine hydrochloride are active pharmaceutical ingredients (APIs) already registered in the country as mono-drugs. These products are widely used for the proposed indications, and their safety and efficacy profiles are known in daily clinical practice. Once the absence of a pharmacokinetic interaction between etoricoxib and cyclobenzaprine hydrochloride has been confirmed in relative bioavailability studies, this phase 3 study will be conducted for demonstrating the superiority of the new FDC over etoricoxib 90 mg (Arcoxia®) and cyclobenzaprine hydrochloride 15 mg (XL - Mitrul®) in the treatment of moderate to serious pain associated with muscle spasm. The purpose is to provide a new, effective, and safe therapeutic option to address these cases.

开始日期2026-05-30

申办/合作机构

Eurofarma Laboratórios SA

NCT05118672 / Not yet recruiting临床3期

A Multicenter, Randomized, Parallel-group, Double-blind, Comparative Trial of the Superiority of Paracetamol 500mg/Fexofenadine 60mg/Phenylephrine 20mg Fixed-dose Combination Versus Placebo in the Symptomatic Treatment of Flu and Cold

A Phase 3, multicenter, Randomized, Double-blind, comparative clinical trial to evaluate the association of paracetamol 500mg + Fexofenadine 60mg + Phenylephrine 20mg in the flu and common cold treatment.
⚠️Study will only be conducted in research centers in Brazil (please do not send e-mail if your center is outside brazil).

开始日期2024-11-30

申办/合作机构

Eurofarma Laboratórios SA

CTR20233937 / CompletedN/A

枸橼酸苯海拉明布洛芬片在健康受试者中单中心、开放、随机、单剂量、双周期、双交叉空腹和餐后状态下的生物等效性试验

比较空腹和餐后给药条件下，长春澜江医药科技有限公司提供的枸橼酸苯海拉明布洛芬片（每片含枸橼酸苯海拉明38mg、布洛芬200mg）与Glaxosmithkline Consumer Healthcare Holdings US LLC持证的枸橼酸苯海拉明布洛芬片（每片含枸橼酸苯海拉明38mg、布洛芬200mg，商品名：Advil®PM）在健康成年人群中吸收程度和速度的差异，评价其生物等效性。

开始日期2023-12-11

申办/合作机构

长春澜江医药科技有限公司

100 项与 H1 receptor x COX 相关的临床结果

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100 项与 H1 receptor x COX 相关的转化医学

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0 项与 H1 receptor x COX 相关的专利（医药）

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2024-02-01·Molecular Pharmacology

Pharmacological Characterization of the Zebrafish (Danio Rerio) Histamine H₁Receptor Reveals the Involvement of the Second Extracellular Loop in the Binding of Histamine

Article

作者: McNaught-Flores, Daniel A ; Kooistra, Albert J ; Arias-Montano, Jose-Antonio ; Chen, Yu-Chia ; Panula, Pertti ; Leurs, Rob

The zebrafish (Danio rerio) histamine H₁ receptor gene (zfH₁R) was cloned in 2007 and reported to be involved in fish locomotion. Yet, no detailed characterization of its pharmacology and signaling properties have so far been reported. In this study, we pharmacologically characterized the zfH₁R expressed in HEK-293T cells by means of [³H]-mepyramine binding and G protein-signaling assays. The zfH₁R [dissociation constant (K_D), 0.7 nM] displayed similar affinity for the antagonist [³H]-mepyramine as the human histamine H₁ receptor (hH₁R) (K_D, 1.5 nM), whereas the affinity for histamine is 100-fold higher than for the human H₁R. The zfH₁R couples to Gα_q/11 proteins and activates several reporter genes, i.e., NFAT, NFϰB, CRE, VEGF, COX-2, SRE, and AP-1, and zfH₁R-mediated signaling is prevented by the Gα_q/11 inhibitor YM-254890 and the antagonist mepyramine. Molecular modeling of the zfH₁R and human H₁R shows that the binding pockets are identical, implying that variations along the ligand binding pathway could underly the differences in histamine affinity instead. Targeting differentially charged residues in extracellular loop 2 (ECL2) using site-directed mutagenesis revealed that Arg210^45x55 is most likely involved in the binding process of histamine in zfH₁R. This study aids the understanding of the pharmacological differences between H₁R orthologs and the role of ECL2 in histamine binding and provides fundamental information for the understanding of the histaminergic system in the zebrafish. SIGNIFICANCE STATEMENT: The use of the zebrafish as in vivo models in neuroscience is growing exponentially, which asks for detailed characterization of the aminergic neurotransmitter systems in this model. This study is the first to pharmacologically characterize the zebrafish histamine H₁ receptor after expression in HEK-293T cells. The results show a high pharmacological and functional resemblance with the human ortholog but also reveal interesting structural differences and unveils an important role of the second extracellular loop in histamine binding.

2023-04-01·Journal of Ethnopharmacology

Investigations of plausible pharmacodynamics supporting the antispasmodic, bronchodilator, and antidiarrheal activities of Berberis lycium Royle. Via in silico, in vitro, and in vivo studies

Article

作者: Aleem, Ambreen ; Hussain Shah, Syed Adil

ETHNOPHARMACOLOGICAL RELEVANCEBerberis lycium Royle, a member of the Berberidaceae family, is a high-value medicinal plant with a documented history of usage in traditional medicine and has demonstrated significant therapeutic results among local populations throughout the globe. It is used traditionally in many parts of Pakistan to treat diarrhea, abdominal spasms, coughs, and chest problems.AIM OF THE STUDYTo investigate the antispasmodic, bronchodilator, and antidiarrheal effects of B. lycium and its possible underlying mechanisms through in silico, in vitro, and in vivo studies.MATERIALS AND METHODSLC ESI-MS/MS analysis was used to identify bioactive components within the hydromethanolic extract of B. lycium. In silico studies, including network pharmacology and molecular docking, were utilized to investigate the antispasmodic and bronchodilator properties of the extract's bioactive components. In vitro pharmacological studies were conducted using isolated rabbit jejunum, trachea, urinary bladder, and rat ileum preparations. In vivo antidiarrheal activities were conducted in mice, including castor oil-induced diarrhea, intestinal transit, and castor oil-induced enteropooling.RESULTSThe LC ESI-MS/MS analysis of the hydromethanolic extract of B. lycium identified 38 bioactive compounds. Network pharmacology study demonstrated that the mechanism of BLR for the treatment of diarrhea might involve IL1B, TLR4, PIK3R1, TNF, PTPRC, IL2, PIK3CD, and ABCB1, whereas, for respiratory ailments, it may involve PIK3CG, TRPV1, STAT3, ICAM1, ACE, PTGER2, PTGS2, TNF, MMP9, NOS2, IL2, CCR5, HRH1, and VDR. Molecular docking research revealed that chlorogenic acid, epigallocatechin, isorhamnetin, quinic acid, gallic acid, camptothecin, formononetin-7-O-glucoside, velutin, caffeic acid, and (S)-luteanine exhibited a higher docking score than dicyclomine with validated proteins of smooth muscle contractions such as CACB2_HUMAN, ACM3_HUMAN, MYLK_HUMAN, and PLCG1_HUMAN. In vitro investigations demonstrated that Blr.Cr, Blr.EtOAc, and Blr.Aq relaxed spontaneously contracting jejunum preparations; carbachol (1 μM)-induced and K⁺ (80 mM)-induced jejunum, trachea, and urinary bladder contractions in a concentration-dependent manner, similar to dicyclomine. Moreover, Blr.Cr, Blr.EtOAc, and Blr.Aq exhibited a rightward shift in Ca⁺² and carbachol cumulative response curves, similar to dicyclomine, demonstrating the coexistence of antimuscarinic and Ca⁺² antagonistic mechanisms due to the presence of alkaloids and flavonoids. In vivo antidiarrheal activities showed that the hydromethanolic extract was significantly effective against castor oil-induced diarrhea and castor oil-induced enteropooling, similar to loperamide, and charcoal meal intestinal transit, similar to atropine, in mice at doses of 50, 100, and 200 mg/kg body weight, which supports its traditional use in diarrhea.CONCLUSIONThe dual blocking mechanism of muscarinic receptors and Ca⁺² channels behind the smooth muscle relaxing activity reveals the therapeutic relevance of B. lycium in diarrhea, abdominal spasms, coughs, and chest problems.

2023-02-01·Heliyon

Supplementation of syringic acid-rich Phrynium pubinerve leaves imparts protection against allergic inflammatory responses by downregulating iNOS, COX-2, and NF-κB expressions

Article

作者: Uddin, Shaikh Jamal ; Dev, Shrabanti ; Ahmed, Khondoker Shahin ; Huq Atanu, Md Samiul ; Islam, Md Arman ; Siraj, Md Afjalus ; Das, Asish Kumar ; Acharyya, Rabindra Nath

BackgroundThe present study was designed to characterize the role of ethanolic leaf extract of Phrynium pubinerve Blume (EPP) supplement in attenuating allergic inflammation, encouraged by the presence of syringic acid in it, as this phenolic acid is reportedly promising in suppressing serum immunoglobulin E (IgE) and inflammatory cytokine levels.Materials and methodsHPLC-DAD dereplication analysis was performed to determine the presence of the vital polyphenolic metabolites. The efficacy of EPP against lipopolysaccharide (LPS)-induced inflammation in RAW 264.7 cells was evaluated by measuring its inhibitory effects on NO and ROS/RNS production. The expressions of major inflammation-associated molecules (iNOS, COX-2, NF-κB, IL-6, and TNF-α) in RAW 264.7 cells were assessed through Western blot. Physiological and behavioral changes, BMI, and different biochemical parameters in mice blood serum were investigated in the toxicological assays. Formaldehyde-induced paw edema test in mice was conducted using established animal model. TDI-induced allergic model in mice was carried out to determine different allergy-like symptoms, and differential white blood cell (WBC) counts in blood and bronchoalveolar lavage (BAL) fluid. The intermolecular interaction analysis of the identified major metabolite of EPP with H1R and iNOS was studied by molecular docking.ResultsHPLC-DAD analysis showed the presence of syringic acid (89.19 mg/100 g EPP) and a few other compounds. LPS-induced NO generation was reduced by EPP in a concentration-dependent manner, showing IC₅₀ of 28.20 ± 0.27 μg/mL. EPP exhibited a similar inhibitory effect on ROS/RNS production with IC₅₀ of 29.47 ± 2.19 μg/mL. Western blotting revealed that EPP significantly downregulated the expressions of iNOS, COX-2, NF-κB, IL-6, and TNF-α in RAW 264.7 cells when challenged with LPS. The toxicological assays confirmed the dosage and organ-specific safety of EPP. In the formaldehyde-induced paw edema test, EPP caused a 66.41% reduction in mice paw volume at 500 mg/kg dose. It ameliorated TDI-induced allergy-like symptoms and decreased different inflammatory WBCs in mice's blood and BAL fluid in a dose-dependent manner. Finally, syringic acid demonstrated mentionable intermolecular binding affinity towards H1R (-6.6 Kcal/moL) and iNOS (-6.7 Kcal/moL).ConclusionsCollectively, considerable scientific reasoning was obtained in favor of the suppressive potential of EPP against allergic inflammatory responses that are proposed to be exerted via the downregulation of iNOS, COX-2, and NF-κB expressions, H1R antagonism and suppression of cytokines, such as IL-6, and TNF-α.