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Elgohary MK, Elkotamy MS, Abdelrahman Alkabbani M, Abdel-Aziz HA. Fenamates and ibuprofen as foundational components in the synthesis of innovative, targeted COX-2 anti-inflammatory drugs, undergoing thorough biopharmacological assessments and in-silico computational studies. Bioorg Chem 2024; 147:107393. [PMID: 38691908 DOI: 10.1016/j.bioorg.2024.107393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 04/13/2024] [Accepted: 04/23/2024] [Indexed: 05/03/2024]
Abstract
Cyclooxygenase-2 plays a vital role in inflammation by catalyzing arachidonic acid conversion toward prostaglandins, making it a prime therapeutic objective. Selective COX-2 inhibitors represent significant progress in anti-inflammatory therapy, offering improved efficacy and fewer side effects. This study describes the synthesis of novel anti-inflammatory compounds from established pharmaceutically marketed agents like fenamates III-V and ibuprofen VI. Through rigorous in vitro testing, compounds 7b-c, and 12a-b demonstrated substantial in vitro selective inhibition, with IC50 values of 0.07 to 0.09 μM, indicating potent pharmacological activity. In vivo assessment, particularly focusing on compound 7c, revealed significant anti-inflammatory effects. Markedly, it demonstrated the highest inhibition of paw thickness (58.62 %) at the 5-hr mark compared to the carrageenan group, indicating its potency in mitigating inflammation. Furthermore, it exhibited a rapid onset of action, with a 54.88 % inhibition observed at the 1-hr mark. Subsequent comprehensive evaluations encompassing analgesic efficacy, histological characteristics, and toxicological properties indicated that compound 7c did not induce gastric ulcers, in contrast to the ulcerogenic tendency associated with mefenamic acid. Moreover, compound 7c underwent additional investigations through in silico methodologies such as molecular modelling, field alignment, and density functional theory. These analyses underscored the therapeutic potential and safety profile of this novel compound, warranting further exploration and development in the realm of pharmaceutical research.
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Affiliation(s)
- Mohamed K Elgohary
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Egyptian-Russian University, Badr City Cairo 11829, Egypt.
| | - Mahmoud S Elkotamy
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Egyptian-Russian University, Badr City Cairo 11829, Egypt
| | - Mahmoud Abdelrahman Alkabbani
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Egyptian-Russian University, Badr City, Cairo 11829, Egypt
| | - Hatem A Abdel-Aziz
- Applied Organic Chemistry Department, National Research Center, Dokki, Cairo 12622, Egypt
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2
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Synthesis, analgesic, anti-inflammatory, ulcerogenic evaluation, and docking study of (benzoylphenoxy)-N-{5-[2-methylphenyl-6-chlorobenzoxazole]} acetamides as COX/5-LOX inhibitor. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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3
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Abou Baker DH, Ibrahim BM, Abdel-Latif Y, Hassan NS, Hassan EM, El Gengaihi S. Biochemical and pharmacological prospects of Citrus sinensis peel. Heliyon 2022; 8:e09979. [PMID: 36039135 PMCID: PMC9418229 DOI: 10.1016/j.heliyon.2022.e09979] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 03/20/2022] [Accepted: 07/13/2022] [Indexed: 12/31/2022] Open
Abstract
Gastric ulcer and hepatotoxicity due to irrational drug overuse are two of the most serious conditions associated with inflammation and oxidative stress that affect the digestive system. This study aimed to experimentally evaluate the hepatoprotective/gastroprotective effects of aqueous and butanol citrus peel extracts and hesperidin in rat models of ulcer and hepatotoxicity. Acute toxicity study was performed for determining the safe dose of citrus extracts to analyze efficacy. In the experiments on hepatoprotective and gastroprotective effects, rats were classified into nine groups in each experiment: (1) negative control, (2) positive control hepatotoxic model with paracetamol (640 mg/kg)/gastric ulcer model:ethanol 70% (1 ml), (3)reference hepatoprotective:silymarin (25 mg/kg)/gastroprotective:ranitidine (50 mg/kg), and (4-9) groups treated for 2 weeks before induction of each disease with either citrus aqueous or butanol extracts or hesperidin (125-250 mg/kg). Drugs, ethanol, or tested compounds were administered orally. The levels of biochemical parameters, such as AST, ALT, NO, MDA, CRP, and ILβ6, were significantly reduced, but CAT level was increased. Postmortem examination of liver and stomach tissues of treated animals revealed marked improvement compared with positive control animals. Hesperidin exerted the best hepatoprotective, antioxidant, anti-inflammatory, and gastroprotective effects, followed by butanol and then aqueous citrus peel extracts.
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Affiliation(s)
- Doha H. Abou Baker
- Medicinal and Aromatic Plants Research Department, Pharmaceutical and Drug Industries Research Institute, National Research Centre, Dokki, Giza, PO 12622, Egypt
| | - Bassant M.M. Ibrahim
- Pharmacology Department, Medicine and Clinical Studies Research Institute, National Research Centre, Dokki, Giza, PO 12622, Egypt
| | - Yasmin Abdel-Latif
- Pharmacology Department, Medicine and Clinical Studies Research Institute, National Research Centre, Dokki, Giza, PO 12622, Egypt,Faculty of Biotechnology, October University for Modern Sciences and Arts, 6th October, Giza, Egypt
| | - Nabila S. Hassan
- Pathology Department, Medical Research Institute, National Research Centre, Dokki, Giza, PO 12622, Egypt
| | - Emad M. Hassan
- Medicinal and Aromatic Plants Research Department, Pharmaceutical and Drug Industries Research Institute, National Research Centre, Dokki, Giza, PO 12622, Egypt
| | - Souad El Gengaihi
- Medicinal and Aromatic Plants Research Department, Pharmaceutical and Drug Industries Research Institute, National Research Centre, Dokki, Giza, PO 12622, Egypt,Corresponding author.
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4
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Nagesh KM, Prashanth T, Khamees HA, Khanum SA. Synthesis, analgesic, anti-inflammatory, COX/5-LOX inhibition, ulcerogenic evaluation, and docking study of benzimidazole bearing indole and benzophenone analogs. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132741] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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5
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Abdel‐Aziz SA, Taher ES, Lan P, El‐Koussi NA, Salem OIA, Gomaa HAM, Youssif BGM. New pyrimidine/thiazole hybrids endowed with analgesic, anti‐inflammatory, and lower cardiotoxic activities: Design, synthesis, and COX‐2/sEH dual inhibition. Arch Pharm (Weinheim) 2022; 355:e2200024. [DOI: 10.1002/ardp.202200024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 03/18/2022] [Accepted: 03/22/2022] [Indexed: 12/19/2022]
Affiliation(s)
- Salah A. Abdel‐Aziz
- Department of Pharmaceutical Medicinal Chemistry, Faculty of Pharmacy Al‐Azhar University Assiut Egypt
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy Deraya University Minia Egypt
| | - Ehab S. Taher
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy Al‐Azhar University Assiut Egypt
| | - Ping Lan
- Institute for Advanced and Applied Chemical Synthesis Jinan University Guangzhou China
| | - Nawal A. El‐Koussi
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy Deraya University Minia Egypt
- Department of Pharmaceutical Medicinal Chemistry, Faculty of Pharmacy Assiut University Assiut Egypt
| | - Ola I. A. Salem
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy Assiut University Assiut Egypt
| | - Hesham A. M. Gomaa
- Pharmacology Department, College of Pharmacy Jouf University Sakaka Saudi Arabia
| | - Bahaa G. M. Youssif
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy Assiut University Assiut Egypt
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6
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Martínez-Herrero S, Martínez A. Adrenomedullin: Not Just Another Gastrointestinal Peptide. Biomolecules 2022; 12:biom12020156. [PMID: 35204657 PMCID: PMC8961556 DOI: 10.3390/biom12020156] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 01/14/2022] [Accepted: 01/15/2022] [Indexed: 12/11/2022] Open
Abstract
Adrenomedullin (AM) and proadrenomedullin N-terminal 20 peptide (PAMP) are two bioactive peptides derived from the same precursor with several biological functions including vasodilation, angiogenesis, or anti-inflammation, among others. AM and PAMP are widely expressed throughout the gastrointestinal (GI) tract where they behave as GI hormones, regulating numerous physiological processes such as gastric emptying, gastric acid release, insulin secretion, bowel movements, or intestinal barrier function. Furthermore, it has been recently demonstrated that AM/PAMP have an impact on gut microbiome composition, inhibiting the growth of bacteria related with disease and increasing the number of beneficial bacteria such as Lactobacillus or Bifidobacterium. Due to their wide functions in the GI tract, AM and PAMP are involved in several digestive pathologies such as peptic ulcer, diabetes, colon cancer, or inflammatory bowel disease (IBD). AM is a key protective factor in IBD onset and development, as it regulates cytokine production in the intestinal mucosa, improves vascular and lymphatic regeneration and function and mucosal epithelial repair, and promotes a beneficial gut microbiome composition. AM and PAMP are relevant GI hormones that can be targeted to develop novel therapeutic agents for IBD, other GI disorders, or microbiome-related pathologies.
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7
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Hendawy OM, Gomaa HAM, Alzarea SI, Alshammari MS, Mohamed FAM, Mostafa YA, Abdelazeem AH, Abdelrahman MH, Trembleau L, Youssif BGM. Novel 1,5-diaryl pyrazole-3-carboxamides as selective COX-2/sEH inhibitors with analgesic, anti-inflammatory, and lower cardiotoxicity effects. Bioorg Chem 2021; 116:105302. [PMID: 34464816 DOI: 10.1016/j.bioorg.2021.105302] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 08/14/2021] [Accepted: 08/18/2021] [Indexed: 12/20/2022]
Abstract
COX-2 selective drugs have been withdrawn from the market due to cardiovascular side effects, just a few years after their discovery. As a result, a new series of 1,5-diaryl pyrazole carboxamides 19-31 was synthesized as selective COX-2/sEH inhibitors with analgesic, anti-inflammatory, and lower cardiotoxic properties. The target compounds were synthesized and tested in vitro against COX-1, COX-2, and sEH enzymes. Compounds 20, 22 and 29 exhibited the most substantial COX-2 inhibitory activity (IC50 values: 0.82-1.12 µM) and had SIs of 13, 18, and 16, respectively, (c.f. celecoxib; SI = 8). Moreover, compounds 20, 22, and 29 were the most potent dual COX-2/sEH inhibitors, with IC50 values of 0.95, 0.80, and 0.85 nM against sEH, respectively, and were more potent than the standard AUDA (IC50 = 1.2 nM). Furthermore, in vivo studies revealed that these compounds were the most active as analgesic/anti-inflammatory derivatives with a good cardioprotective profile against cardiac biomarkers and inflammatory cytokines. Finally, the most active dual inhibitors were docked inside COX-2/sEH active sites to explain their binding modes.
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Affiliation(s)
- O M Hendawy
- Department of Pharmacology, College of Pharmacy, Jouf University, Sakaka, Aljouf 72341, Saudi Arabia; Department of Clinical Pharmacology, Faculty of Medicine, Beni-Suef University, Egypt
| | - Hesham A M Gomaa
- Department of Pharmacology, College of Pharmacy, Jouf University, Sakaka, Aljouf 72341, Saudi Arabia
| | - Sami I Alzarea
- Department of Pharmacology, College of Pharmacy, Jouf University, Sakaka, Aljouf 72341, Saudi Arabia
| | - Mutariah S Alshammari
- Department of Chemistry, College of Science, Jouf University, Sakaka, Aljouf 72341, Saudi Arabia
| | - Fatma A M Mohamed
- Clinical Laboratory Science Department, College of Applied Medical Sciences, Jouf University, Aljouf 72341, Saudi Arabia; Chemistry Department, Faculty of Science, Alexandria University, Alexandria 21321, Egypt
| | - Yaser A Mostafa
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
| | - Ahmed H Abdelazeem
- Department of Medicinal Chemistry, Faculty of Pharmacy, Beni-Suef University, Beni-Suef 62514, Egypt; Department of Pharmaceutical Sciences, College of Pharmacy, Riyadh Elm University, Riyadh 11681, Saudi Arabia
| | - Mostafa H Abdelrahman
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Al-Azhar University, Assiut 71524, Egypt
| | - Laurent Trembleau
- School of Natural and Computing Sciences, University of Aberdeen, Meston Building, Aberdeen AB24 3UE, United Kingdom.
| | - Bahaa G M Youssif
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt.
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8
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Design, synthesis and molecular docking of new pyrazole-thiazolidinones as potent anti-inflammatory and analgesic agents with TNF-α inhibitory activity. Bioorg Chem 2021; 111:104827. [PMID: 33798845 DOI: 10.1016/j.bioorg.2021.104827] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 03/07/2021] [Accepted: 03/09/2021] [Indexed: 12/14/2022]
Abstract
A new set of derivatives bearing pyrazole-methylenehydrazono-thiazolidinone scaffold 4-23 was designed, synthesized and confirmed by different spectroscopic means and elemental analyses. In-vivo anti-inflammatory and ulcerogenic evaluation was performed for all the newly synthesized derivatives using indomethacin, celecoxib and diclofenac as standard drugs. The compounds 5, 10, 15, 17, 21, 22 appeared to be the most promising candidates producing rapid onset and long duration of anti-inflammatory activity as well as promising GIT safety profile. Furthermore, analgesic evaluation revealed that the compounds 5, 10, 15 and 22 produced potent and long acting analgesia accompanied with significant inhibition of the inflammatory cytokine TNF-α level in comparison with the standard drugs. Molecular docking study of the latter derivatives was also carried out to rationalize their binding affinities and their modes of interactions with the active site of TNF-α.
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9
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El-Dash Y, Khalil NA, Ahmed EM, Hassan MSA. Synthesis and biological evaluation of new nicotinate derivatives as potential anti-inflammatory agents targeting COX-2 enzyme. Bioorg Chem 2021; 107:104610. [PMID: 33454504 DOI: 10.1016/j.bioorg.2020.104610] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 12/23/2020] [Accepted: 12/28/2020] [Indexed: 12/20/2022]
Abstract
Two novel series derived from nicotinic acid were synthesized and evaluated for their inhibitory activity against cyclooxygenases COX-1 and COX-2, and their selectivity indices were determined. Celecoxib, diclofenac and indomethacin were used as reference drugs. All compounds showed highly potent COX-2 inhibitory activity and higher selectivity towards COX-2 inhibition compared to indomethacin. In addition, these compounds except 3a showed clear preferential COX-2 over COX-1 inhibition compared to diclofenac. Compounds 3b, 3e, 4c and 4f showed COX-2 inhibitory activity equipotent to celecoxib. Compounds 4c and 4f demonstrated selectivity indices 1.8-1.9 fold higher than celecoxib. These two most potent and COX-2 selective compounds were further tested in vivo for anti-inflammatory activity by means of carrageenan induced rat paw edema method. Ulcerogenic activity with histopathological studies were performed. The results showed no ulceration, which implies their safe gastric profile. Compound 4f exhibited the most potent in vivo anti-inflammatory activity comparable to all reference drugs. Further, compounds 4c and 4f were investigated for their influence on certain inflammatory cytokines TNF-α and IL-1β in addition to PEG2. The findings revealed that these candidates could be identified as promising potent anti-inflammatory agents. Molecular docking of 4c and 4f in the COX-2 active site was performed to rationalize their COX-2 inhibitory potency. The results were found to be in line with the biological findings as they exerted more favorable interactions compared to that of celecoxib, explaining their remarkable COX-2 inhibitory activity.
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Affiliation(s)
- Yara El-Dash
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Cairo University, 33 Kasr El-Aini Street, Cairo 11562, Egypt.
| | - Nadia A Khalil
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Cairo University, 33 Kasr El-Aini Street, Cairo 11562, Egypt.
| | - Eman M Ahmed
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Cairo University, 33 Kasr El-Aini Street, Cairo 11562, Egypt
| | - Marwa S A Hassan
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Cairo University, 33 Kasr El-Aini Street, Cairo 11562, Egypt
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10
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Shaaban MA, Kamal AM, Faggal SI, Farag NA, Aborehab NM, Elsahar AE, Mohamed KO. Design, synthesis, and biological evaluation of new pyrazoloquinazoline derivatives as dual COX-2/5-LOX inhibitors. Arch Pharm (Weinheim) 2020; 353:e2000027. [PMID: 32696514 DOI: 10.1002/ardp.202000027] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 06/19/2020] [Accepted: 06/23/2020] [Indexed: 01/02/2023]
Abstract
A new series of pyrazoloquinazoline derivatives equipped with different chalcones was designed, synthesized, and identified through 1 H nuclear magnetic resonance (NMR), 13 C NMR, and infrared spectroscopic techniques. Our design strategy of the quinazolinone-privileged scaffold as a new scaffold was based on merging pharmacophores previously reported to exhibit cyclooxygenase-2 (COX-2)/5-lipoxygenase (5-LOX) inhibitory activity. All the newly synthesized derivatives were biologically evaluated for COX and 5-LOX inhibitory activity and COX-2 selectivity, using celecoxib and zileuton as reference drugs, as they exhibited promising anti-inflammatory activity. Compound 3j was found to be the most promising derivative, with IC50 values of 667 and 47 nM against COX-1 and COX-2, respectively, which are superior to that of celecoxib (IC50 value against COX-2 = 95 nM), showing an SI of 14.2 that was much better than celecoxib. Compounds 3f and 3h exhibited COX-1 inhibition, with IC50 values of 1,485 and 684 nM, respectively. The synthesized compounds showed a significant inhibitory activity against 5-LOX, with IC50 values ranging from 0.6 to 4.3 µM, where compounds 3f and 3h were found to be the most potent derivatives, with IC50 values of 0.6 and 1.0 µM, respectively, in comparison with that of zileuton (IC50 = 0.8 µM). These promising derivatives, 3f, 3h, and 3j, were further investigated in vivo for anti-inflammatory, gastric ulcerogenic effects, and prostaglandin production (PGE2) in rat serum. The molecular docking studies concerning the binding sites of COX-2 and 5-LOX revealed similar orientation, compared with reported inhibitors, which encouraged us to design new leads targeting COX-2 and 5-LOX as dual inhibitors, as a new avenue in anti-inflammatory therapy.
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Affiliation(s)
- Mohamed A Shaaban
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Aliaa M Kamal
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Cairo University, Cairo, Egypt.,Department of Organic Chemistry, Faculty of Pharmacy, October University for Modern Science and Arts (MSA), Giza, Egypt
| | - Samar I Faggal
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Nahla A Farag
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Misr International University, Cairo, Egypt
| | - Nora M Aborehab
- Department of Biochemistry, Faculty of Pharmacy, October University for Modern Science and Arts (MSA), Giza, Egypt
| | - Ayman E Elsahar
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Khaled O Mohamed
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Cairo University, Cairo, Egypt
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11
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Shabaan MA, Kamal AM, Faggal SI, Elsahar AE, Mohamed KO. Synthesis and biological evaluation of pyrazolone analogues as potential anti‐inflammatory agents targeting cyclooxygenases and 5‐lipoxygenase. Arch Pharm (Weinheim) 2020; 353:e1900308. [DOI: 10.1002/ardp.201900308] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 01/15/2020] [Accepted: 01/16/2020] [Indexed: 12/20/2022]
Affiliation(s)
- Mohamed A. Shabaan
- Department of Pharmaceutical Organic Chemistry, Faculty of PharmacyCairo UniversityCairo Egypt
| | - Aliaa M. Kamal
- Department of Pharmaceutical Organic Chemistry, Faculty of PharmacyCairo UniversityCairo Egypt
- Department of Pharmaceutical Chemistry, Faculty of PharmacyOctober University for Modern Science and Arts (MSA)Giza Egypt
| | - Samar I. Faggal
- Department of Pharmaceutical Organic Chemistry, Faculty of PharmacyCairo UniversityCairo Egypt
| | - Ayman E. Elsahar
- Department of Pharmacology and Toxicology, Faculty of PharmacyCairo UniversityCairo Egypt
| | - Khaled O. Mohamed
- Department of Pharmaceutical Organic Chemistry, Faculty of PharmacyCairo UniversityCairo Egypt
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12
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Gedawy EM, Kassab AE, El Kerdawy AM. Design, synthesis and biological evaluation of novel pyrazole sulfonamide derivatives as dual COX-2/5-LOX inhibitors. Eur J Med Chem 2020; 189:112066. [PMID: 31982653 DOI: 10.1016/j.ejmech.2020.112066] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 01/11/2020] [Accepted: 01/11/2020] [Indexed: 12/13/2022]
Abstract
The current therapeutic demand focuses more on the discovery of safer NSAIDs rather than exploring more potent alternatives. The dual COX-2/5-LOX inhibition is a promising strategy for designing compounds with an enhanced efficacy, reduced side-effects and a broader anti-inflammatory spectrum in comparison to classical NSAIDs. In the present study, a hybridization strategy was adopted to combine the binding features of the non-selective COX inhibitor "sulindac" and the selective COX-2 inhibitor "celecoxib" which show 5-LOX inhibitory activity with that of licofelone and a celecoxib pyridone analogue which show dual COX-2/5-LOX inhibitory activity to design new series of pyrazole sulfonamide derivatives which, by design, should possess dual COX-2/5-LOX inhibitory activity. All the newly synthesized compounds were initially tested for their potential analgesic activity, then candidates that showed potential analgesic activity, were selected for the subsequent anti-inflammatory activity evaluation, as well as, ulcerogenicity testing. Moreover, in vitro assessment of their COX-1, COX-2 and 5-LOX inhibitory activities were performed. The benzothiophen-2-yl pyrazole carboxylic acid derivative 5b showed the most potent analgesic and anti-inflammatory activities surpassing that of celecoxib and indomethacin. It showed potent COX-1, COX-2 and 5-LOX inhibitory activity with IC50 of 5.40, 0.01 and 1.78 μM, respectively, showing a selectivity index of 344.56 that was much better than the used reference standards and its parent compounds, confirming its selectivity towards COX-2 over COX-1. The prodrug ester derivatives 6c and 6d showed equipotent activity to their parent compound 5b with no gastric ulcerogenicity. Molecular docking simulations confirmed that the newly synthesized compounds possess the structural features required for binding to the target enzymes COX-2 and 5-LOX.
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Affiliation(s)
- Ehab M Gedawy
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Cairo University, Kasr El-Aini Street, Cairo, P.O. Box 11562, Egypt; Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Pharmaceutical Industries, Badr University in Cairo BUC, Cairo, Egypt
| | - Asmaa E Kassab
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Cairo University, Kasr El-Aini Street, Cairo, P.O. Box 11562, Egypt.
| | - Ahmed M El Kerdawy
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Cairo University, Kasr El-Aini Street, Cairo, P.O. Box 11562, Egypt; Department of Organic and Pharmaceutical Chemistry, Faculty of Pharmacy, New Giza University, Newgiza, km 22 Cairo-Alexandria Desert Road, Cairo, Egypt
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13
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Ahmed EM, Hassan MS, El-Malah AA, Kassab AE. New pyridazine derivatives as selective COX-2 inhibitors and potential anti-inflammatory agents; design, synthesis and biological evaluation. Bioorg Chem 2020; 95:103497. [DOI: 10.1016/j.bioorg.2019.103497] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 10/22/2019] [Accepted: 12/05/2019] [Indexed: 01/12/2023]
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14
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Synthesis and biological evaluation of pyridazinone derivatives as selective COX-2 inhibitors and potential anti-inflammatory agents. Eur J Med Chem 2019; 171:25-37. [PMID: 30904755 DOI: 10.1016/j.ejmech.2019.03.036] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 02/19/2019] [Accepted: 03/14/2019] [Indexed: 11/27/2022]
Abstract
A series of pyridazinone derivatives, bearing an aryl or pyridyl moiety linked through an ethenyl spacer to position-6 was designed and synthesized. The newly synthesized compounds were screened for preferential inhibition of COX-2 over COX-1 isoforms. Compounds 2c, 2d, 2e, 2f, 3a, 3b, 3c, 3d and 3e are highly potent COX-2 inhibitors with IC50 values in nano-molar range. Moreover, they showed clear preferential COX-2 over COX-1 inhibition with selective indices (SIs) ranging from 4 to 38. Of particular interest, compounds 2d, 2f, 3c and 3d exhibited the most prominent COX-2 inhibitory activity with IC50 values range of 15.56-19.77 nM. They showed SIs of 24, 38, 35 and 24, respectively which were 1.4-2.2 fold higher than celecoxib (SI 17). These four compounds were further investigated in vivo for anti-inflammatory activity using the carrageenan induced rat paw edema method and ulcerogenic liability. Compounds 2f, 3c and 3d demonstrated superior anti-inflammatory activity relative to both indomethacin and celecoxib. None of these compounds showed gastric ulcerogenic effect. On the other hand, compound 2d was found equipotent to celecoxib at the second hour of oral administration. At the fourth hour, it exhibited more potent anti-inflammatory activity than celecoxib, becoming equipotent to indomethacin. It showed mild hyperemia in vivo compared to indomethacin and celecoxib. The molecular docking study of compounds 2d, 2f, 3c and 3d into COX-2 active site revealed a similar binding mode to celecoxib, explaining their remarkable COX-2 inhibitory activity. Taken together, these results indicated that these derivatives are good leads for potential COX-2 inhibitors to be used as potent and safe anti-inflammatory agents.
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15
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Ibrahim TH, Loksha YM, Elshihawy HA, Khodeer DM, Said MM. Synthesis of Some Novel 2,6-Disubstituted Pyridazin-3(2H
)-one Derivatives as Analgesic, Anti-Inflammatory, and Non-Ulcerogenic Agents. Arch Pharm (Weinheim) 2017; 350. [DOI: 10.1002/ardp.201700093] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2017] [Revised: 06/29/2017] [Accepted: 07/04/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Tamer H. Ibrahim
- Department of Pharmaceutical Chemistry; Faculty of Pharmacy and Pharmaceutical Industries; Sinai University; Al-Arish North Sinai Egypt
| | - Yasser M. Loksha
- Department of Pharmaceutical Chemistry; Faculty of Pharmacy and Pharmaceutical Industries; Sinai University; Al-Arish North Sinai Egypt
| | - Hosam A. Elshihawy
- Department of Pharmaceutical Organic Chemistry; Faculty of Pharmacy; Suez Canal University; Ismailia Egypt
| | - Dina M. Khodeer
- Department of Pharmacology and Toxicology; Faculty of Pharmacy; Suez Canal University; Ismailia Egypt
| | - Mohamed M. Said
- Department of Pharmaceutical Organic Chemistry; Faculty of Pharmacy; Suez Canal University; Ismailia Egypt
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Martínez-Herrero S, Martínez A. Adrenomedullin regulates intestinal physiology and pathophysiology. Domest Anim Endocrinol 2016; 56 Suppl:S66-83. [PMID: 27345325 DOI: 10.1016/j.domaniend.2016.02.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 02/11/2016] [Accepted: 02/15/2016] [Indexed: 02/08/2023]
Abstract
Adrenomedullin (AM) and proadrenomedullin N-terminal 20 peptide (PAMP) are 2 biologically active peptides produced by the same gene, ADM, with ubiquitous distribution and many physiological functions. Adrenomedullin is composed of 52 amino acids, has an internal molecular ring composed by 6 amino acids and a disulfide bond, and shares structural similarities with calcitonin gene-related peptide, amylin, and intermedin. The AM receptor consists of a 7-transmembrane domain protein called calcitonin receptor-like receptor in combination with a single transmembrane domain protein known as receptor activity-modifying protein. Using morphologic techniques, it has been shown that AM and PAMP are expressed throughout the gastrointestinal tract, being specially abundant in the neuroendocrine cells of the gastrointestinal mucosa; in the enterochromaffin-like and chief cells of the gastric fundus; and in the submucosa of the duodenum, ileum, and colon. This wide distribution in the gastrointestinal tract suggests that AM and PAMP may act as gut hormones regulating many physiological and pathologic conditions. To date, it has been proven that AM and PAMP act as autocrine/paracrine growth factors in the gastrointestinal epithelium, play key roles in the protection of gastric mucosa from various kinds of injury, and accelerate healing in diseases such as gastric ulcer and inflammatory bowel diseases. In addition, both peptides are potent inhibitors of gastric acid secretion and gastric emptying; they regulate the active transport of sugars in the intestine, regulate water and ion transport in the colon, modulate colonic bowel movements and small-intestine motility, improve endothelial barrier function, and stabilize circulatory function during gastrointestinal inflammation. Furthermore, AM and PAMP are antimicrobial peptides, and they contribute to the mucosal host defense system by regulating gut microbiota. To get a formal demonstration of the effects that endogenous AM and PAMP may have in gut microbiota, we developed an inducible knockout of the ADM gene. Using this model, we have shown, for the first time, that lack of AM/PAMP leads to changes in gut microbiota composition in mice. Further studies are needed to investigate whether this lack of AM/PAMP may have an impact in the development and/or progression of intestinal diseases through their effect on microbiota composition.
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Affiliation(s)
- S Martínez-Herrero
- Oncology Area, Center for Biomedical Research of La Rioja (CIBIR), Logroño, La Rioja 26006, Spain
| | - A Martínez
- Oncology Area, Center for Biomedical Research of La Rioja (CIBIR), Logroño, La Rioja 26006, Spain.
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Saeed MM, Khalil NA, Ahmed EM, Eissa KI. Synthesis and anti-inflammatory activity of novel pyridazine and pyridazinone derivatives as non-ulcerogenic agents. Arch Pharm Res 2012; 35:2077-92. [DOI: 10.1007/s12272-012-1205-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2011] [Revised: 11/27/2011] [Accepted: 12/06/2011] [Indexed: 10/27/2022]
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Design, synthesis, and evaluation of anti-inflammatory and ulcerogenicity of novel pyridazinone derivatives. Med Chem Res 2011. [DOI: 10.1007/s00044-011-9895-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Plank C, Hartner A, Klanke B, Geissler B, Porst M, Amann K, Hilgers KF, Rascher W, Dötsch J. Adrenomedullin reduces mesangial cell number and glomerular inflammation in experimental mesangioproliferative glomerulonephritis. Kidney Int 2006; 68:1086-95. [PMID: 16105039 DOI: 10.1111/j.1523-1755.2005.00501.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Adrenomedullin (ADM) is a vasodilator peptide that is abundantly expressed in the kidney. ADM has antiproliferative effects on glomerular mesangial cells (MC) in vitro. Whether or not treatment with ADM can reduce MC proliferation in vivo [i.e., in mesangioproliferative glomerulonephritis (GN)] is unknown. We tested the hypothesis that ADM substitution reduces MC proliferation in GN. METHODS GN in rats was induced by injection of an anti-Thy-1.1 antibody. Rats received osmotic minipumps, which continuously delivered rat ADM (500 ng/hour, N = 11), or vehicle (N = 13) from day 3 to day 6 after GN induction. Rats were sacrificed 6 days after induction of GN. On kidney sections, cells staining positive for proliferating cell nuclear antigen, mesangial cells, monocytes, and apoptotic cells were counted. Parameters of inflammation and fibrosis were measured in renal cortex and sieved glomeruli by real-time polymerase chain reaction (PCR). RESULTS Systolic blood pressure, diuresis, albuminuria, creatinine clearance, microaneurysm formation, and mesangial matrix expansion were not influenced by ADM infusion. However, ADM treatment significantly reduced the number of MC, showed a tendency to reduce total glomerular cell proliferation, and significantly increased apoptosis. ADM-treated GN animals showed significantly less glomerular monocyte infiltration. ADM treatment normalized transforming growth factor (TGF)-beta1 mRNA expression and reduced monocyte chemoattractant protein-1 (MCP-1), osteopontin, plasminogen activator inhibitor-1 (PAI-1), collagen I, and collagen III mRNA expression significantly. CONCLUSION Exogenous ADM infusion reduces MC number and glomerular monocyte infiltration in the state of mesangial proliferation during acute experimental mesangioproliferative GN. These findings indicate that ADM can influence the course of mesangioproliferative GN.
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Affiliation(s)
- Christian Plank
- Department of Pediatrics, University Erlangen-Nuremberg, Germany.
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International Society of Nephrology. Kidney Int 2004. [DOI: 10.1111/j.1523-1755.2004.90662.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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López J, Martínez A. Cell and molecular biology of the multifunctional peptide, adrenomedullin. INTERNATIONAL REVIEW OF CYTOLOGY 2003; 221:1-92. [PMID: 12455746 DOI: 10.1016/s0074-7696(02)21010-4] [Citation(s) in RCA: 112] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Adrenomedullin (AM) is a recently discovered regulatory peptide involved in many functions including vasodilatation, electrolyte balance, neurotransmission, growth, and hormone secretion regulation, among others. This 52-amino acid peptide is expressed by specific cell types in many organs throughout the body. A complex receptor system has been described for AM; it requires at least the presence of a seven-transmembrane-domain G-protein-coupled receptor, a single-transmembrane-domain receptor activity modifying protein, and a receptor component protein needed to establish the connection with the downstream signal transduction pathway, which usually involves cyclicAMP. In addition, a serum-binding protein regulates the biological actions of AM, frequently by increasing AM functional attributes. Changes in levels of circulating AM correlate with several critical diseases, including cardiovascular and renal disorders, sepsis, cancer, and diabetes. Whether AM is a causal agent, a protective reaction, or just a marker for these diseases is currently under investigation. New technologies seeking to elevate and/or reduce AM levels are being investigated as potential therapeutic avenues.
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Affiliation(s)
- José López
- Cell Biology Unit, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
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Clementi G, Caruso A, Cutuli VMC, Mangano NG, Salomone S, Lempereur L, Prato A, Matera M, Amico-Roxas M. Gastroprotective effect of adrenomedullin administered subcutaneously in the rat. Peptides 2002; 23:1149-53. [PMID: 12126744 DOI: 10.1016/s0196-9781(02)00048-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Subcutaneous injections of adrenomedullin prevented reserpine-induced gastric mucosal damage in a dose-dependent manner (1-1000 ng/kg), but did not interfere with the lesions produced by ethanol administration. In pylorus-ligated rats adrenomedullin significantly reduced gastric volume, total and free acid output as well as ulcer formation. The gastroprotective activity of adrenomedullin was not present in rats pretreated with cysteamine. These results suggest that adrenomedullin exerts its antiulcer effect, when it is administered subcutaneously (s.c.), probably by a mechanism which involves somatostatin related transmission.
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Affiliation(s)
- Giuseppe Clementi
- Department of Experimental and Clinical Pharmacology, School of Medicine, University of Catania, Catania, Italy.
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Abstract
Since the discovery of adrenomedullin in 1993 several hundred papers have been published regarding the regulation of its secretion and the multiplicity of its actions. It has been shown to be an almost ubiquitous peptide, with the number of tissues and cell types synthesizing adrenomedullin far exceeding those that do not. In Section II of this paper we give a comprehensive review both of tissues and cell lines secreting adrenomedullin and of the mechanisms regulating gene expression. The data on circulating adrenomedullin, obtained with the various assays available, are also reviewed, and the disease states in which plasma adrenomedullin is elevated are listed. In Section III the pharmacology and biochemistry of adrenomedullin binding sites, both specific sites and calcitonin gene-related peptide (CGRP) receptors, are discussed. In particular, the putative adrenomedullin receptor clones and signal transduction pathways are described. In Section IV the various actions of adrenomedullin are discussed: its actions on cellular growth, the cardiovascular system, the central nervous system, and the endocrine system are all considered. Finally, in Section V, we consider some unresolved issues and propose future areas for research.
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Affiliation(s)
- J P Hinson
- Department of Molecular and Cellular Biology, St. Bartholomew's and the Royal London School of Medicine and Dentistry, Queen Mary and Westfield College, University of London, United Kingdom.
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Clementi G, Caruso A, Cutuli VM, Prato A, Mangano NG, Amico-Roxas M. Antiinflammatory activity of adrenomedullin in the acetic acid peritonitis in rats. Life Sci 1999; 65:PL203-8. [PMID: 10574227 DOI: 10.1016/s0024-3205(99)00406-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The antiinflammatory effect of ADM was studied in different models of inflammation and compared to the one of CGRP. Peptides were active against acetic acid-induced peritonitis in the rats. ADM and CGRP exerted the antiinflammatory effect at different doses, 400 and 20 ng/kg respectively, but with different efficacy (ADM >CGRP). This effect was blocked by pretreatment with CGRP (8-37) fragment or with L-NAME. No antiinflammatory activity was evidenced against serotonin- or carrageenin-induced rat paw edema. Our data suggest that ADM exerts antiinflammatory activity in the model characterized by a vascular component. This effect involves CGRP receptors and appears to be mediated by nitric oxide system.
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Affiliation(s)
- G Clementi
- Institute of Pharmacology, University of Catania, School of Medicine, Italy
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