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Gharehbagh HJ, Ebrahimi M, Dabaghian F, Mojtabavi S, Hariri R, Saeedi M, Faramarzi MA, Khanavi M. Chemical composition, cholinesterase, and α-glucosidase inhibitory activity of the essential oils of some Iranian native Salvia species. BMC Complement Med Ther 2023; 23:184. [PMID: 37270541 DOI: 10.1186/s12906-023-04004-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 05/19/2023] [Indexed: 06/05/2023] Open
Abstract
BACKGROUND The plants from Salvia genus contain widely distributed species which have been used in folk medicine as well as pharmaceutical and food industries. METHODS The chemical composition of 12 native Iranian Salvia species (14 plants) was identified using gas chromatography-mass spectrometry (GC-MS). Also, the inhibitory activity of all essential oils (EOs) was evaluated toward α-glucosidase and two types of cholinesterase (ChE) using spectrophotometric methods. The in vitro α-glucosidase inhibition assay was performed by the determination of p-nitrophenol (pNP) obtained from the enzymatic dissociation of p-nitrophenol-α-D-glucopyranoside (pNPG) as the substrate. In vitro ChE inhibitory assay was conducted based on the modified Ellman's procedure using the measurement of 5-thio-2-nitrobenzoic acid produced from the hydrolysis of thiocholine derivatives as the substrate, in the presence of acetylcholinesterase (AChE) and butyrylcholinesterase (BChE). RESULTS Totally, 139 compounds were detected and caryophyllene oxide and trans-β-caryophyllene were the most abundant compounds in all EOs. The yield of EOs extracted from the plants were also calculated in the range of 0.06 to 0.96% w/w. Herein, α-glucosidase inhibitory activity of 8 EOs was reported for the first time and among all, S. spinosa L. was found to be the most potent inhibitor (90.5 inhibition at 500 μg/mL). Also, the ChE inhibitory activity of 8 species was reported for the first time and our results showed that the BChE inhibitory effect of all EOs was more potent than that of AChE. The ChE inhibition assay indicated that S. mirzayanii Rech.f. & Esfand. collected from Shiraz was the most potent inhibitor (72.68% and 40.6% at the concentration of 500 μg/mL, toward AChE and BChE, respectively). CONCLUSIONS It seems that native Salvia species of Iran could be considered in the development of anti-diabetic and anti-Alzheimer's disease supplements.
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Affiliation(s)
- Houra Jazayeri Gharehbagh
- Department of Pharmacognosy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Masoud Ebrahimi
- Department of Pharmacognosy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Farid Dabaghian
- Department of Pharmacognosy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Somayeh Mojtabavi
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Roshanak Hariri
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mina Saeedi
- Medicinal Plants Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
- Persian Medicine and Pharmacy Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Ali Faramarzi
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahnaz Khanavi
- Department of Pharmacognosy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
- Faculty of Land and Food Systems, University of British Columbia, Vancouver, BC, Canada.
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2
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Saeedi M, Hariri R, Iraji A, Ahmadi A, Mojtabavi S, Golshani S, Faramarzi MA, Akbarzadeh T. Novel N'-substituted benzylidene benzohydrazides linked to 1,2,3-triazoles: potent α-glucosidase inhibitors. Sci Rep 2023; 13:8960. [PMID: 37268722 DOI: 10.1038/s41598-023-36046-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Accepted: 05/28/2023] [Indexed: 06/04/2023] Open
Abstract
Herein, various N'-substituted benzylidene benzohydrazide-1,2,3-triazoles were designed, synthesized, and screened for their inhibitory activity toward α-glucosidase. The structure of derivatives was confirmed using 1H- and 13C-NMR, FTIR, Mass spectrometry, and elemental analysis. All derivatives exhibited good inhibition with IC50 values in the range of 0.01 to 648.90 µM, compared with acarbose as the positive control (IC50 = 752.10 µM). Among them, compounds 7a and 7h showed significant potency with IC50 values of 0.02 and 0.01 µM, respectively. The kinetic study revealed that they are noncompetitive inhibitors toward α-glucosidase. Also, fluorescence quenching was used to investigate the interaction of three inhibitors 7a, 7d, and 7h, with α-glucosidase. Accordingly, the binding constants, the number of binding sites, and values of thermodynamic parameters were determined for the interaction of candidate compounds toward the enzyme. Finally, the in silico cavity detection plus molecular docking was performed to find the allosteric site and key interactions between synthesized compounds and the target enzyme.
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Affiliation(s)
- Mina Saeedi
- Medicinal Plants Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
- Persian Medicine and Pharmacy Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Roshanak Hariri
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Aida Iraji
- Stem Cells Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
- Central Research Laboratory, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ali Ahmadi
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Somayeh Mojtabavi
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran, 1417614411, Iran
| | - Shiva Golshani
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran, 1417614411, Iran
| | - Mohammad Ali Faramarzi
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran, 1417614411, Iran
| | - Tahmineh Akbarzadeh
- Persian Medicine and Pharmacy Research Center, Tehran University of Medical Sciences, Tehran, Iran.
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
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3
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Rastegari A, Safavi M, Vafadarnejad F, Najafi Z, Hariri R, Bukhari SNA, Iraji A, Edraki N, Firuzi O, Saeedi M, Mahdavi M, Akbarzadeh T. Synthesis and evaluation of novel arylisoxazoles linked to tacrine moiety: in vitro and in vivo biological activities against Alzheimer's disease. Mol Divers 2021; 26:409-428. [PMID: 34273065 DOI: 10.1007/s11030-021-10248-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Accepted: 06/05/2021] [Indexed: 02/07/2023]
Abstract
Alzheimer's disease (AD) is now ranked as the third leading cause of death after heart disease and cancer. There is no definite cure for AD due to the multi-factorial nature of the disease, hence, multi-target-directed ligands (MTDLs) have attracted lots of attention. In this work, focusing on the efficient cholinesterase inhibitory activity of tacrine, design and synthesis of novel arylisoxazole-tacrine analogues was developed. In vitro acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) inhibition assay confirmed high potency of the title compounds. Among them, compounds 7l and 7b demonstrated high activity toward AChE and BChE with IC50 values of 0.050 and 0.039 μM, respectively. Both compounds showed very good self-induced Aβ aggregation and AChE-induced inhibitory activity (79.4 and 71.4% for compound 7l and 61.8 and 58.6% for compound 7b, respectively). Also, 7l showed good anti-BACE1 activity with IC50 value of 1.65 µM. The metal chelation test indicated the ability of compounds 7l and 7b to chelate biometals (Zn2+, Cu2+, and Fe2+). However, they showed no significant neuroprotectivity against Aβ-induced damage in PC12 cells. Evaluation of in vitro hepatotoxicity revealed comparable toxicity of compounds 7l and 7b with tacrine. In vivo studies by Morris water maze (MWM) task demonstrated that compound 7l significantly reversed scopolamine-induced memory deficit in rats. Finally, molecular docking studies of compounds 7l and 7b confirmed establishment of desired interactions with the AChE, BChE, and BACE1 active sites.
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Affiliation(s)
- Arezoo Rastegari
- Persian Medicine and Pharmacy Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Maliheh Safavi
- Department of Biotechnology, Iranian Research Organization for Science and Technology (IROST), Tehran, Iran
| | - Fahimeh Vafadarnejad
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Zahra Najafi
- Department of Medicinal Chemistry, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Roshanak Hariri
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Syed Nasir Abbas Bukhari
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jouf University, Aljouf, 2014, Sakaka, Saudi Arabia
| | - Aida Iraji
- Stem Cells Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
- Central Research laboratory, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Najmeh Edraki
- Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Omidreza Firuzi
- Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mina Saeedi
- Persian Medicine and Pharmacy Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Medicinal Plants Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Mahdavi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Tahmineh Akbarzadeh
- Persian Medicine and Pharmacy Research Center, Tehran University of Medical Sciences, Tehran, Iran.
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
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4
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Nazari M, Rezaee E, Hariri R, Akbarzadeh T, Tabatabai SA. Novel 1,2,4-oxadiazole derivatives as selective butyrylcholinesterase inhibitors: Design, synthesis and biological evaluation. EXCLI J 2021; 20:907-921. [PMID: 34121977 PMCID: PMC8192883 DOI: 10.17179/excli2021-3569] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Accepted: 05/10/2021] [Indexed: 11/17/2022]
Abstract
Alzheimer's disease (AD) is a progressive mental disorder that brings a huge economic burden to the healthcare systems. During this illness, acetylcholine levels in the cholinergic systems gradually diminish, which results in severe memory loss and cognitive impairments. Moreover, Butyrylcholinesterase (BuChE) enzyme participates in cholinergic neurotransmission regulation by playing a prominent role in the latter phase of AD. In this study, based on donepezil, which is an effective acetylcholinesterase (AChE) inhibitor, a series of 1,2,4-oxadiazole compounds were designed, synthesized and their inhibitory activities towards AChE and BuChE enzymes were evaluated. Some structures exhibited a higher selectivity rate towards BuChE in comparison to donepezil. Notably, compound 6n with an IC50 value of 5.07 µM and an SI ratio greater than 19.72 showed the highest potency and selectivity towards BuChE enzyme. The docking result revealed that compound 6n properly fitted the active site pocket of BuChE enzyme, and formed desirable lipophilic interactions and hydrogen bonds. Moreover, according to in silico ADME studies, these compounds have proper potential for being developed as new oral anti-Alzheimer's agents (Figure 1(Fig. 1)).
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Affiliation(s)
- Maryam Nazari
- Department of Pharmaceutical Chemistry, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Elham Rezaee
- Department of Pharmaceutical Chemistry, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Roshanak Hariri
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Tahmineh Akbarzadeh
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Sayyed Abbas Tabatabai
- Department of Pharmaceutical Chemistry, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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5
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He S, Gleason J, Mahlakoiv T, van der Touw W, Kang L, Hariri R, Zhang X. Human placental hematopoietic stem cell derived natural killer cells (CYNK-001) mediate protection against influenza a viral infection. Cytotherapy 2021. [DOI: 10.1016/s1465324921004321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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6
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Hariri R, Saeedi M, Akbarzadeh T. Naturally occurring and synthetic peptides: Efficient tyrosinase inhibitors. J Pept Sci 2021; 27:e3329. [PMID: 33860571 DOI: 10.1002/psc.3329] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 03/17/2021] [Accepted: 03/23/2021] [Indexed: 01/30/2023]
Abstract
Tyrosinase is a copper-containing enzyme involved in the biosynthesis of melanin pigment, which is the most important photo protective agent against skin photo carcinogenesis. Excess production of melanin causes hyperpigmentation leading to undesired browning in human skin, fruits, and vegetable as well as plant-derived foods. Moreover, the role of tyrosinase in the onset and progression of various diseases such as cancers, Alzheimer's, and Parkinson diseases has been well documented in the literature. In this respect, tyrosinase inhibitors have been in the center of attention particularly as the efficient skin whitening agents. Among a wide range of compounds possessing anti-tyrosinase activity, peptides both natural and synthetic derivatives have attracted attention due to high potency and safety.
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Affiliation(s)
- Roshanak Hariri
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mina Saeedi
- Medicinal Plants Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.,Persian Medicine and Pharmacy Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Tahmineh Akbarzadeh
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.,Persian Medicine and Pharmacy Research Center, Tehran University of Medical Sciences, Tehran, Iran
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7
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Saeedi M, Felegari P, Iraji A, Hariri R, Rastegari A, Mirfazli SS, Edraki N, Firuzi O, Mahdavi M, Akbarzadeh T. Novel N-benzylpiperidine derivatives of 5-arylisoxazole-3-carboxamides as anti-Alzheimer's agents. Arch Pharm (Weinheim) 2020; 354:e2000258. [PMID: 33226157 DOI: 10.1002/ardp.202000258] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 10/05/2020] [Accepted: 10/31/2020] [Indexed: 01/05/2023]
Abstract
The complex pathophysiology of Alzheimer's disease (AD) has prompted researchers to develop multitarget-directed molecules to find an effective therapy against the disease. In this context, a novel series of N-(1-benzylpiperidin-4-yl)-5-arylisoxazole-3-carboxamide derivatives were designed, synthesized, and evaluated against acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE). In vitro biological evaluation demonstrated that compound 4e was the best AChE (IC50 = 16.07 μM) and BuChE inhibitor (IC50 = 15.16 μM). A kinetic study of 4e was also conducted, which presented a mixed-type inhibition for both enzymes. Molecular docking studies revealed that compound 4e fitted well into the active sites of AChE and BuChE, forming stable and strong interactions with key residues Glu199, Trp84, Asp72, Tyr121, and Phe288 in AChE and His438, Trp82, Ala328, Tyr332, Phe329, Thr120, and Pro285 in BuChE. Besides, the inhibition of BACE1 by 4e and the biometal chelation activity of 4e were measured. The neuroprotective assessment revealed that 4e exhibited 23.2% protection at 50 µM toward amyloid-beta-induced PC12 neuronal cells. Overall, this study exhibited that compound 4e was a promising compound targeting multiple factors associated with AD.
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Affiliation(s)
- Mina Saeedi
- Medicinal Plants Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.,Persian Medicine and Pharmacy Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Peyman Felegari
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Aida Iraji
- Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Roshanak Hariri
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Arezoo Rastegari
- Persian Medicine and Pharmacy Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - S Sara Mirfazli
- Department of Medicinal Chemistry, School of Pharmacy-International Campus, Iran University of Medical Sciences, Tehran, Iran
| | - Najmeh Edraki
- Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Omidreza Firuzi
- Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Mahdavi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Tahmineh Akbarzadeh
- Persian Medicine and Pharmacy Research Center, Tehran University of Medical Sciences, Tehran, Iran.,Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
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8
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Saeedi M, Safavi M, Allahabadi E, Rastegari A, Hariri R, Jafari S, Bukhari SNA, Mirfazli SS, Firuzi O, Edraki N, Mahdavi M, Akbarzadeh T. Thieno[2,3-b]pyridine amines: Synthesis and evaluation of tacrine analogs against biological activities related to Alzheimer's disease. Arch Pharm (Weinheim) 2020; 353:e2000101. [PMID: 32657467 DOI: 10.1002/ardp.202000101] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 06/10/2020] [Accepted: 06/15/2020] [Indexed: 11/06/2022]
Abstract
In search of safer tacrine analogs, various thieno[2,3-b]pyridine amine derivatives were synthesized and evaluated for their inhibitory activity against cholinesterases (ChEs). Among the synthesized compounds, compounds 5e and 5d showed the highest activity towards acetylcholinesterase and butyrylcholinesterase, with IC50 values of 1.55 and 0.23 µM, respectively. The most active ChE inhibitors (5e and 5d) were also candidates for further complementary assays, such as kinetic and molecular docking studies as well as studies on inhibitory activity towards amyloid-beta (βA) aggregation and β-secretase 1, neuroprotectivity, and cytotoxicity against HepG2 cells. Our results indicated efficient anti-Alzheimer's activity of the synthesized compounds.
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Affiliation(s)
- Mina Saeedi
- Medicinal Plants Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.,Persian Medicine and Pharmacy Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Maliheh Safavi
- Department of Biotechnology, Iranian Research Organization for Science and Technology (IROST), Tehran, Iran
| | - Emad Allahabadi
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Arezoo Rastegari
- Persian Medicine and Pharmacy Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Roshanak Hariri
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Sanaz Jafari
- Department of Biotechnology, Iranian Research Organization for Science and Technology (IROST), Tehran, Iran
| | - Syed N A Bukhari
- Department of Pharmaceutical Chemistry, College of Pharmacy, Aljouf University, Aljouf, Saudi Arabia
| | - Seyedeh S Mirfazli
- Department of Medicinal Chemistry, Iran University of Medical Sciences, Tehran, Iran
| | - Omidreza Firuzi
- Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Najmeh Edraki
- Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Mahdavi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Tahmineh Akbarzadeh
- Persian Medicine and Pharmacy Research Center, Tehran University of Medical Sciences, Tehran, Iran.,Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
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9
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Omidpanah S, Vahedi-Mazdabadi Y, Manayi A, Rastegari A, Hariri R, Mortazavi-Ardestani E, Eftekhari M, Khanavi M, Akbarzadeh T, Saeedi M. Phytochemical investigation and anticholinesterase activity of ethyl acetate fraction of Myristica fragrans Houtt. seeds. Nat Prod Res 2020; 36:610-616. [PMID: 32640862 DOI: 10.1080/14786419.2020.1788555] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
In this work, n-hexane, chloroform, and ethyl acetate fractions of the methanol extract of Myristica fragrans Houtt. seeds were evaluated against acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) via Ellman's method. It was found that all fractions depicted no anti-AChE activity, however, they were active toward BChE with IC50 values of 361.8, 215.0, and 145.8 µg/mL, respectively comparing with donepezil as the reference drug (IC50 = 1.97 µg/mL). The ethyl acetate fraction which also showed high neuroprotectivity and metal chelating ability was selected for the phytochemical analysis. Our results confirmed the presence of trimyristin and 5,7-diacetyl chrysin (reported for the first time in M. fragrans) in the corresponding fraction.
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Affiliation(s)
- Sahar Omidpanah
- Faculty of Pharmacy, Medicinal Plants Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Yasaman Vahedi-Mazdabadi
- Persian Medicine and Pharmacy Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Azadeh Manayi
- Faculty of Pharmacy, Medicinal Plants Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Arezoo Rastegari
- Persian Medicine and Pharmacy Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Roshanak Hariri
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Elahe Mortazavi-Ardestani
- School of Pharmacy, International Campus (TUMS-IC), Tehran University of Medical Sciences, Tehran, Iran
| | - Mahdieh Eftekhari
- Department of Pharmacognosy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahnaz Khanavi
- Department of Pharmacognosy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Tahmineh Akbarzadeh
- Persian Medicine and Pharmacy Research Center, Tehran University of Medical Sciences, Tehran, Iran.,Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mina Saeedi
- Faculty of Pharmacy, Medicinal Plants Research Center, Tehran University of Medical Sciences, Tehran, Iran.,Persian Medicine and Pharmacy Research Center, Tehran University of Medical Sciences, Tehran, Iran
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10
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Saeedi M, Rastegari A, Hariri R, Mirfazli SS, Mahdavi M, Edraki N, Firuzi O, Akbarzadeh T. Design and Synthesis of Novel Arylisoxazole-Chromenone Carboxamides: Investigation of Biological Activities Associated with Alzheimer's Disease. Chem Biodivers 2020; 17:e1900746. [PMID: 32154628 DOI: 10.1002/cbdv.201900746] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Accepted: 03/09/2020] [Indexed: 12/17/2022]
Abstract
A novel series of hybrid arylisoxazole-chromenone carboxamides were designed, synthesized, and evaluated for their cholinesterase (ChE) inhibitory activity based on the modified Ellman's method. Among synthesized compounds, 5-(3-nitrophenyl)-N-{4-[(2-oxo-2H-1-benzopyran-7-yl)oxy]phenyl}-1,2-oxazole-3-carboxamide depicted the most acetylcholinesterase (AChE) inhibitory activity (IC50 =1.23 μm) and 5-(3-chlorophenyl)-N-{4-[(2-oxo-2H-1-benzopyran-7-yl)oxy]phenyl}-1,2-oxazole-3-carboxamide was found to be the most potent butyrylcholinesterase (BChE) inhibitor (IC50 =9.71 μm). 5-(3-Nitrophenyl)-N-{4-[(2-oxo-2H-1-benzopyran-7-yl)oxy]phenyl}-1,2-oxazole-3-carboxamide was further investigated for its BACE1 inhibitory activity as well as neuroprotectivity and metal chelating ability as important factors involved in onset and progress of Alzheimer's disease. It could inhibit BACE1 by 48.46 % at 50 μm. It also showed 6.4 % protection at 25 μm and satisfactory chelating ability toward Zn2+ , Fe2+ , and Cu2+ ions. Docking studies of 5-(3-nitrophenyl)-N-{4-[(2-oxo-2H-1-benzopyran-7-yl)oxy]phenyl}-1,2-oxazole-3-carboxamide and 5-(3-chlorophenyl)-N-{4-[(2-oxo-2H-1-benzopyran-7-yl)oxy]phenyl}-1,2-oxazole-3-carboxamide confirmed desired interactions with those amino acid residues of the AChE and BChE, respectively.
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Affiliation(s)
- Mina Saeedi
- Medicinal Plants Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, 14155, Tehran, Iran.,Persian Medicine and Pharmacy Research Center, Tehran University of Medical Sciences, 14155, Tehran, Iran
| | - Arezoo Rastegari
- Persian Medicine and Pharmacy Research Center, Tehran University of Medical Sciences, 14155, Tehran, Iran.,Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, 14155, Tehran, Iran
| | - Roshanak Hariri
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, 14155, Tehran, Iran
| | - Seyedeh Sara Mirfazli
- Department of Medicinal Chemistry, School of Pharmacy-International Campus, Iran University of Medical Sciences, 14665, Tehran, Iran
| | - Mohammad Mahdavi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, 14155, Tehran, Iran
| | - Najmeh Edraki
- Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences, 71348, Shiraz, Iran
| | - Omidreza Firuzi
- Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences, 71348, Shiraz, Iran
| | - Tahmineh Akbarzadeh
- Persian Medicine and Pharmacy Research Center, Tehran University of Medical Sciences, 14155, Tehran, Iran.,Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, 14155, Tehran, Iran
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Mahdavi M, Hariri R, Mirfazli SS, Lotfian H, Rastergari A, Firuzi O, Edraki N, Larijani B, Akbarzadeh T, Saeedi M. Synthesis and Biological Activity of Some Benzochromenoquinolinones: Tacrine Analogs as Potent Anti-Alzheimer's Agents. Chem Biodivers 2019; 16:e1800488. [PMID: 30720917 DOI: 10.1002/cbdv.201800488] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 02/04/2019] [Indexed: 12/25/2022]
Abstract
Alzheimer's disease (AD) is a well-known neurodegenerative disorder affecting millions of old people worldwide and the corresponding epidemiological data emphasize the importance of the disease. As AD is a multifactorial illness, various single target directed drugs that have reached clinical trials have failed. Therefore, various factors associated with outset of AD have been considered in targeted drug discovery. In this work, various benzochromenoquinolinones were synthesized and evaluated for their cholinesterase and BACE1 inhibitory activities as well as neuroprotective and metal-chelating properties. Among the synthesized compounds, 14-amino-13-(3-nitrophenyl)-2,3,4,13-tetrahydro-1H-benzo[6,7]chromeno[2,3-b]quinoline-7,12-dione (6m) depicted the best inhibitory activity toward acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) with IC50 s of 0.86 and 6.03 μm, respectively. Also, the compound could inhibit β-secretase 1 (BACE1) with IC50 =19.60 μm and showed metal chelating ability toward Cu2+ , Fe2+ , and Zn2+ . In addition, docking study demonstrated desirable interactions of compound 6m with amino acid residues characterizing AChE, BChE, and BACE1.
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Affiliation(s)
- Mohammad Mahdavi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Research Institute, Tehran University of Medical Sciences, Tehran, 1416753955, Iran
| | - Roshanak Hariri
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran, University of Medical Sciences, Tehran, 1416753955, Iran
| | - Seyedeh Sara Mirfazli
- Department of Medicinal Chemistry, School of Pharmacy-International Campus, Iran University of Medical Sciences, Tehran, 1449614535, Iran
| | - Hania Lotfian
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran, University of Medical Sciences, Tehran, 1416753955, Iran
| | - Arezoo Rastergari
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran, University of Medical Sciences, Tehran, 1416753955, Iran
| | - Omidreza Firuzi
- Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences, Shiraz, 71345-1978, Iran
| | - Najmeh Edraki
- Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences, Shiraz, 71345-1978, Iran
| | - Bagher Larijani
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Research Institute, Tehran University of Medical Sciences, Tehran, 1416753955, Iran
| | - Tahmineh Akbarzadeh
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran, University of Medical Sciences, Tehran, 1416753955, Iran.,Persian Medicine and Pharmacy Research Center, Tehran University of Medical Sciences, Tehran, 1416753955, Iran
| | - Mina Saeedi
- Persian Medicine and Pharmacy Research Center, Tehran University of Medical Sciences, Tehran, 1416753955, Iran.,Medicinal Plants Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, 1416753955, Iran
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Saeedi M, Mohtadi-Haghighi D, Mirfazli SS, Mahdavi M, Hariri R, Lotfian H, Edraki N, Iraji A, Firuzi O, Akbarzadeh T. Design and Synthesis of Selective Acetylcholinesterase Inhibitors: Arylisoxazole-Phenylpiperazine Derivatives. Chem Biodivers 2019; 16:e1800433. [DOI: 10.1002/cbdv.201800433] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 11/19/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Mina Saeedi
- Medicinal Plants Research Center, Faculty of Pharmacy; Tehran University of Medical Sciences; 14155 Tehran Iran
- Persian Medicine and Pharmacy Research Center; Tehran University of Medical Sciences, 14155 Tehran, Iran
| | - Dorrin Mohtadi-Haghighi
- Department of Medicinal Chemistry, Faculty of Pharmacy; Tehran University of Medical Sciences; 14176 Tehran Iran
| | - Seyedeh Sara Mirfazli
- Department of Medicinal Chemistry, School of Pharmacy-International Campus; Iran University of Medical Sciences; 14665 Tehran Iran
| | - Mohammad Mahdavi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute; Tehran University of Medical Sciences; 14155 Tehran Iran
| | - Roshanak Hariri
- Persian Medicine and Pharmacy Research Center; Tehran University of Medical Sciences, 14155 Tehran, Iran
| | - Hania Lotfian
- Department of Medicinal Chemistry, Faculty of Pharmacy; Tehran University of Medical Sciences; 14176 Tehran Iran
| | - Najmeh Edraki
- Medicinal and Natural Products Chemistry Research Center; Shiraz University of Medical Sciences; 71348 Shiraz Iran
| | - Aida Iraji
- Medicinal and Natural Products Chemistry Research Center; Shiraz University of Medical Sciences; 71348 Shiraz Iran
| | - Omidreza Firuzi
- Medicinal and Natural Products Chemistry Research Center; Shiraz University of Medical Sciences; 71348 Shiraz Iran
| | - Tahmineh Akbarzadeh
- Persian Medicine and Pharmacy Research Center; Tehran University of Medical Sciences, 14155 Tehran, Iran
- Department of Medicinal Chemistry, Faculty of Pharmacy; Tehran University of Medical Sciences; 14176 Tehran Iran
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Mahdavi M, Saeedi M, Nadri H, Eghtedari M, Gholizadeh S, Hariri R, Akbarzadeh T. Synthesis of Thiazolone Derivatives as Novel Soybean 15-LOX Inhibitors. LETT ORG CHEM 2017. [DOI: 10.2174/1570178614666170227143902] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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14
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Hariri R, Afshar Z, Mahdavi M, Safavi M, Saeedi M, Najafi Z, Sabourian R, Karimpour-Razkenari E, Edraki N, Moghadam FH, Shafiee A, Khanavi M, Akbarzadeh T. Novel Tacrine-Based Pyrano[3’,4’:5,6]pyrano[2,3-b]quinolinones: Synthesis and Cholinesterase Inhibitory Activity. Arch Pharm (Weinheim) 2016; 349:915-924. [DOI: 10.1002/ardp.201600123] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 10/12/2016] [Accepted: 10/13/2016] [Indexed: 11/05/2022]
Affiliation(s)
- Roshanak Hariri
- Faculty of Pharmacy, Department of Medicinal Chemistry; Tehran University of Medical Sciences; Tehran Iran
| | - Zahra Afshar
- Faculty of Pharmacy, Department of Medicinal Chemistry; Tehran University of Medical Sciences; Tehran Iran
| | - Mohammad Mahdavi
- Drug Design and Development Research Center; Tehran University of Medical Sciences; Tehran Iran
| | - Maliheh Safavi
- Department of Biotechnology; Iranian Research Organization for Science and Technology; Tehran Iran
| | - Mina Saeedi
- Medicinal Plants Research Center; Faculty of Pharmacy; Tehran University of Medical Sciences; Tehran Iran
- Persian Medicine and Pharmacy Research Center; Tehran University of Medical Sciences; Tehran Iran
| | - Zahra Najafi
- Faculty of Pharmacy, Department of Medicinal Chemistry; Hamadan University of Medical Sciences; Hamadan Iran
| | - Reyhaneh Sabourian
- Persian Medicine and Pharmacy Research Center; Tehran University of Medical Sciences; Tehran Iran
| | | | - Najmeh Edraki
- Medicinal and Natural Products Chemistry Research Center; Shiraz University of Medical Sciences; Shiraz Iran
| | - Farshad Homayouni Moghadam
- Department of Cellular Biotechnology at Cell Science Research Center, Royan Institute for Biotechnology; ACECR; Isfahan Iran
| | - Abbas Shafiee
- Faculty of Pharmacy, Department of Medicinal Chemistry; Tehran University of Medical Sciences; Tehran Iran
| | - Mahnaz Khanavi
- Faculty of Pharmacy, Department of Pharmacognosy; Tehran University of Medical Sciences; Tehran Iran
| | - Tahmineh Akbarzadeh
- Faculty of Pharmacy, Department of Medicinal Chemistry; Tehran University of Medical Sciences; Tehran Iran
- Persian Medicine and Pharmacy Research Center; Tehran University of Medical Sciences; Tehran Iran
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Mahdavi M, Hariri R, Saeedi M, Foroumadi A, Shafiee A, Akbarzadeh T. Synthesis of new benzo[f]imidazo[1,2-d][1,4]oxazepines: AgNO3-mediated intramolecular hydroamination. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.11.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Borlongan C, Zeitlin A, Hariri R, Pal A. Cell therapy for stroke: towards clinical application of Celgene human placenta-derived cells. Placenta 2011. [DOI: 10.1016/j.placenta.2011.07.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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17
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Kabbani SS, Jamil H, Hammoud A, Nabhani F, Hariri R, Sabbagh N, Ross DN. Use of the pulmonary autograft for mitral replacement: short- and medium-term experience. Eur J Cardiothorac Surg 2001; 20:257-61. [PMID: 11463541 DOI: 10.1016/s1010-7940(01)00814-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVES In an effort to find a suitable mitral substitute for our young rheumatic patients who cannot follow a proper anticoagulation regimen for life, we resorted to an old concept reported by one of the authors (D.N.R.) in 1967. This report summarizes our experience with the Ross-mitral operation to date. METHODS Between 19 June 1997 and 27 June 2000, 43 patients with rheumatic valve disease underwent the Ross-mitral operation. Two patients were excluded because of graft stenosis detected at the end of the procedure for which the autograft had to be sacrificed. Of the remaining 41 patients 29 were female, and the age range was 12--57 years (median 39 years). The autograft was incorporated within a Dacron tubing, with a pericardial collar attached to its proximal end. The conduit was sutured distally to the excised mitral annulus; the pericardium was attached proximally to the atrial wall in 36 patients, and was used simply to cover the Dacron tubing in five patients. The pulmonary artery was replaced with a pulmonary or aortic homograft, or with a pulmonary xenograft. RESULTS There were two hospital fatalities from a cerebrovascular accident and a lung injury, and two postoperative myocardial infarctions. There were five late deaths, two due to bacterial endocarditis, one due to excessive bleeding at reoperation for a paravalvular leak, and two not related to the procedure. A phenomenon of 'autograft stenosis' occurred intraoperatively in four recent consecutive patients that probably resulted from our use, for the first time, of softer Dacron tubing material. This was repaired in two of the four patients. Echocardiography confirmed excellent functioning of all 34 autografts of surviving patients up to 36 months postoperatively (mean follow-up 18.2 months). Two patients remain in functional Class III status, one due to left heart failure following myocardial infarction, and the other due to recurrent tricuspid insufficiency. CONCLUSIONS We believe that the mitral pulmonary autograft is a worthwhile alternative to mechanical prostheses in developing countries.
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Affiliation(s)
- S S Kabbani
- Damascus University Cardiovascular Surgical Center, Damascus, Syria.
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Kabbani SS, Jamil H, Hammoud A, Nabhani F, Hariri R, Sabbagh N. The mitral pulmonary autograft: a follow up cautionary report. J Heart Valve Dis 2000; 9:801-4. [PMID: 11128788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
BACKGROUND AND AIM OF THE STUDY The study aim was to alert surgeons embarking on mitral replacement with the pulmonary autograft to the possibility of graft stenosis resulting from kinking of the Dacron tube support. METHODS AND RESULTS After having used old-style Dacron tubing for pulmonary autograft support in 32 patients, a change was made to a softer variety. This, together with routine retention of the posterior subvalvular apparatus, resulted in Dacron tube angulation and autograft stenosis detected at intraoperative echocardiography in four consecutive patients, This sequela was corrected in one patient by re-adjusting the pericardial collar, and in another by severing the retained chordae. However, in two patients it was necessary to sacrifice the autograft and replace it with a mechanical prosthesis. When the reason for the complication was identified, and a return to the use of a firmer Dacron material instigated, this phenomenon disappeared and surgery was completed in the final three patients, without mishap. CONCLUSION The use of a newer soft Dacron tubing to support the pulmonary autograft in mitral replacement might result in autograft stenosis. Thus, a firm-type Dacron should be used for this operation.
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Affiliation(s)
- S S Kabbani
- Damascus University Cardiovascular Surgical Center, Syria
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Kabbani SS, Ross DN, Jamil H, Hammoud A, Nabhani F, Hariri R, Kabbani LS. Mitral valve replacement with a pulmonary autograft: initial experience. J Heart Valve Dis 1999; 8:359-66; discussion 366-7. [PMID: 10461234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
BACKGROUND AND AIM OF THE STUDY For long-term substitution of the mitral valve, mechanical prostheses require life-long anticoagulation which is impractical in developing countries, xenografts degenerate early in our young population, and mitral homografts have not yet been established as being suitable. We therefore returned to an original concept first reported by one of the authors (D.N.R.) in 1967. METHODS Between July 1997 and November 1998, 22 patients (mean age 40.3 years; range: 28 to 57 years) with rheumatic mitral valve disease unsuitable for reconstruction were subjected to excision of their pulmonary valve in the standard fashion of the Ross procedure. The inverted autograft was incorporated in a 2.5 cm-long Dacron conduit, with a pericardial collar attached to its proximal end. The distal end of the autograft-conduit was sutured to the annulus of the excised mitral valve, and the proximal end incorporating the pericardial collar was attached to the adjacent atrial wall. In this way all prosthetic material was covered. The right ventricular outflow was reconstructed with a pulmonary homograft in 17 patients, with an aortic homograft in two, and with a porcine pulmonary xenograft in three. RESULTS One patient developed a fatal cerebrovascular accident, probably related to an incorrectly placed pericardial collar with rough surface exposed to the blood flow. In a second patient the autograft had to be replaced six weeks after operation due to bacterial endocarditis contracted in the operating room. Echocardiography confirmed excellent function of the remaining autografts up to 16 months postoperatively (mean follow up 8.3 months). CONCLUSIONS We believe the pulmonary autograft to be a valid option for mitral valve replacement in our patients.
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Affiliation(s)
- S S Kabbani
- Damascus University Cardiovascular Surgical Center, Syria
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Abstract
BACKGROUND Home parenteral nutrition (HPN) requires intensive medical case management by practitioners with expertise in the provision of nutrition support. There is expenditure of considerable time and resources for management of these patients not covered by any of the traditional reimbursement mechanisms. The costs associated with this unreimbursed input and follow-up are most often borne by the Nutrition Support Team or individual practitioners. Reimbursement by home care agencies to physicians for management of patients after discharge cannot be done because this may be construed as a "kick-back" for referral of patients to particular home care agencies. METHODS Time and costs associated with management of HPN patients after discharge from the hospital were assessed using a cost-identification analysis of 24 different factors. Daily activity logs were kept by the Nutrition Support Team members over a 2-week period. Costs of space and furnishings were calculated. RESULTS On average, a total of 25 h/d was spent by members of the Nutrition Support Team on our HPN patients. Variable activities accounted for 5640.1 hours of time with fixed support at 890.3 hours. This computes to a total annual personnel cost of $168,482 ($1982 per patient). If costs of furnishings and space are also included, the overall cost of all resources was $175,989 per year or $2070 per patient. CONCLUSION Significant and currently nonreimbursed costs are involved in HPN patient management. These costs are most often absorbed by the Nutrition Support Team and should be considered when evaluating total costs of HPN.
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Affiliation(s)
- S Curtas
- Cleveland Clinic Foundation, OH 44195-5278, USA
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Cohen JR, Perry MO, Hariri R, Holt J, Alvarez O. Aortic collagenase activity as affected by laparotomy, cecal resection, aortic mobilization, and aortotomy in rats. J Vasc Surg 1984; 1:562-5. [PMID: 6092729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Recent biochemical evidence that aneurysm formation may be related to higher activated collagenase levels within aneurysmal aortic walls in association with reports of asymptomatic aneurysm rupture after laparotomy has led to speculation that operative trauma unrelated to direct aortic injury may increase the chance of aneurysm rupture by inducing collagenase activation within the aortic wall. The purpose of this study was to determine whether aortic collagenase can be activated by distant operative trauma and the kinetics of activation after injury. Ninety-six rats were divided into four groups: group 1--laparotomy alone; group 2--cecal resection; group 3--aortic mobilization; and group 4--aortotomy and repair. Animals within each group were sacrificed 1,3, and 6 hours and 1,2,3,4, and 5 days after surgery. The abdominal aortas were removed and assayed for collagenase activity by incubation with and digestion of tritium-labeled collagen. Collagenase activity was significantly elevated up to 6 hours after direct aortic injury (p less than 0.05) and decreased to normal levels within 2 days. Laparotomy, colon resection, and aortic mobilization had no significant effect on aortic collagenase activity compared to the controls. These data suggest that collagenase activity is a local phenomenon related to wound healing at the site of initial injury. Operative trauma without direct aortic injury had no effect on aortic collagenase activity.
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