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Ortiz-Morales AA, García-Vázquez JB, Fragoso-Vázquez MJ, Rosales-Hernández MC, Fragoso-Morales LG, Estrada-Pérez AR, Correa-Basurto J. PAMAM-G4 protect the N-(2-hydroxyphenyl)-2-propylpentanamide (HO-AAVPA) and maintain its antiproliferative effects on MCF-7. Sci Rep 2023; 13:3383. [PMID: 36854957 DOI: 10.1038/s41598-023-30144-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 02/16/2023] [Indexed: 03/02/2023] Open
Abstract
Our work group designed and synthesized a promissory compound N-(2-hydroxyphenyl)-2-propylpentanamide (HO-AAVPA). The HO-AAVPA is a HDAC1 inhibitor and antiproliferative in cancer cell lines. However, HO-AAVPA is poor water solubility and enzymatically metabolized. In this work, the fourth-generation poly(amidoamine) dendrimer (PAMAM-G4) was used as a drug deliver carrier of HO-AAVPA. Moreover, HO-AAVPA and HO-AAVPA-PAMAM complex were submitted to forced degradation studies (heat, acid, base, oxidation and sunlight). Also, the HO-AAVPA-PAMAM-G4 complex was assayed as antiproliferative in a breast cancer cell line (MCF-7). The HO-AAVPA-PAMAM-G4 complex was obtained by docking and experimentally using three pH conditions: acid (pH = 3.0), neutral (pH = 7.0) and basic (pH = 9.0) showing that PAMAM-G4 captureand protect the HO-AAVPA from forced degradation, it is due to sunlight yielded a by-product from HO-AAVPA. In addition, the PAMAM-G4 favored the HO-AAVPA water solubility under basic and neutral pH conditions with significant difference (F(2,18) = 259.9, p < 0.001) between the slopes of the three conditions being the basic condition which solubilizes the greatest amount of HO-AAVPA. Finally, the HO-AAVPA-PAMAM-G4 complex showed better antiproliferative effects on MCF-7 (IC50 = 75.3 μM) than HO-AAVPA (IC50 = 192 μM). These results evidence that PAMAM-G4 complex improve the biological effects of HO-AAVPA.
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Lee C, Hsiao Y, Chen P, Wu H, Lu C, Yang S, Wang P. CLEFMA induces intrinsic and extrinsic apoptotic pathways through ERK1/2 and p38 signalling in uterine cervical cancer cells. J Cell Mol Med 2023; 27:446-455. [PMID: 36645157 PMCID: PMC9889609 DOI: 10.1111/jcmm.17671] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 01/02/2023] [Indexed: 01/17/2023] Open
Abstract
Although concurrent chemoradiotherapy is the cornerstone of treatment for locally advanced or recurrent uterine cervical cancer, treatment fails at a high rate. Therefore, the development of novel targeting agents is critical. This study investigated the action of CLEFMA, a potent, synthetic curcumin derivative, on cervical cancer cells and its mechanism of action. We found that CLEFMA negatively regulated the viability of cervical cancer cells, involving induction of cell apoptosis. Cleaved caspase-3, cleaved poly(adenosine diphosphate-ribose) polymerase, cleaved caspase-8, and cleaved caspase-9 expression were increased by treatment with CLEFMA. After U0126 (ERK1/2 inhibitor) and SB203580 (p38 inhibitor) were applied as cotreatment with CLEFMA, the expression of cleaved caspase-8, -9, and -3 was reduced significantly. In conclusion, CLEFMA activates both extrinsic and intrinsic apoptotic pathways through ERK1/2 and p38 signal transduction in cervical cancer cells.
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Affiliation(s)
- Chung‐Yuan Lee
- Department of Obstetrics and GynecologyChiayi Chang Gung Memorial HospitalChiayiTaiwan,Department of NursingChang Gung University of Science and TechnologyChiayiTaiwan
| | - Yi‐Hsuan Hsiao
- School of MedicineChung Shan Medical UniversityTaichungTaiwan,Department of Obstetrics and GynecologyChanghua Christian HospitalChanghuaTaiwan,Women's Health Research LaboratoryChanghua Christian HospitalChanghuaTaiwan
| | - Pei‐Ni Chen
- Institute of MedicineChung Shan Medical UniversityTaichungTaiwan,Department of Medical ResearchChung Shan Medical University HospitalTaichungTaiwan
| | - Heng‐Hsiung Wu
- Program for Cancer Biology and Drug DiscoveryChina Medical UniversityTaichungTaiwan
| | - Chih‐Yun Lu
- Institute of MedicineChung Shan Medical UniversityTaichungTaiwan
| | - Shun‐Fa Yang
- Institute of MedicineChung Shan Medical UniversityTaichungTaiwan,Department of Medical ResearchChung Shan Medical University HospitalTaichungTaiwan
| | - Po‐Hui Wang
- Institute of MedicineChung Shan Medical UniversityTaichungTaiwan,Department of Obstetrics and GynecologyChung Shan Medical University HospitalTaichungTaiwan
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Chen PN, Lin CW, Yang SF, Chang YC. CLEFMA Induces the Apoptosis of Oral Squamous Carcinoma Cells through the Regulation of the P38/HO-1 Signalling Pathway. Cancers (Basel) 2022; 14:cancers14225519. [PMID: 36428612 PMCID: PMC9688613 DOI: 10.3390/cancers14225519] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 10/28/2022] [Accepted: 11/07/2022] [Indexed: 11/12/2022] Open
Abstract
The purpose of this research was to evaluate the impact and the underlying molecular mechanism of CLEFMA-induced cell death in human OSCC. The anti-tumour properties of CLEFMA in oral cancer were explored using colony formation, flow cytometry, human apoptosis array, Western blot, and immunohistochemistry assays. The in vivo anti-tumour effect of CLEFMA administered by oral gavage was evaluated using SCC-9-derived xenograft-bearing nude mouse models. CLEFMA significantly suppressed colony formation and elicited cellular apoptosis in oral cancer cells. CLEFMA treatment remarkably increased phosphorylated p38 and HO-1 along with cleavage of poly ADP-ribose polymerase and activation of caspase-8, -9, and -3 in HSC-3 and SCC-9 cells. Administration of HO-1 small interfering RNA significantly protected the cells from CLEFMA-induced caspase-3, -8, and -9 activation. Attenuation of p38 activity by the pharmacologic inhibitor SB203580 dramatically reduced CLEFMA-induced caspase-3, -8, and -9 activation and HO-1 expression in OSCC. The subcutaneous murine xenograft models showed that CLEFMA in vivo suppressed tumour growth in implanted SCC-9 cells. All of these findings indicated that CLEFMA induced apoptosis through the p38-dependent rise in HO-1 signal transduction cascades in OSCC.
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Affiliation(s)
- Pei-Ni Chen
- Institute of Medicine, Chung Shan Medical University, Taichung 402, Taiwan
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung 402, Taiwan
| | - Chiao-Wen Lin
- Institute of Oral Sciences, Chung Shan Medical University, Taichung 402, Taiwan
- Department of Dentistry, Chung Shan Medical University Hospital, Taichung 402, Taiwan
| | - Shun-Fa Yang
- Institute of Medicine, Chung Shan Medical University, Taichung 402, Taiwan
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung 402, Taiwan
| | - Yu-Chao Chang
- Department of Dentistry, Chung Shan Medical University Hospital, Taichung 402, Taiwan
- School of Dentistry, Chung Shan Medical University, Taichung 402, Taiwan
- Correspondence:
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Tobeiha M, Rajabi A, Raisi A, Mohajeri M, Yazdi SM, Davoodvandi A, Aslanbeigi F, Vaziri M, Hamblin MR, Mirzaei H. Potential of natural products in osteosarcoma treatment: Focus on molecular mechanisms. Biomed Pharmacother 2021; 144:112257. [PMID: 34688081 DOI: 10.1016/j.biopha.2021.112257] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 08/03/2021] [Revised: 09/21/2021] [Accepted: 09/26/2021] [Indexed: 02/07/2023] Open
Abstract
Osteosarcoma is the most frequent type of bone cancer found in children and adolescents, and commonly arises in the metaphyseal region of tubular long bones. Standard therapeutic approaches, such as surgery, chemotherapy, and radiation therapy, are used in the management of osteosarcoma. In recent years, the mortality rate of osteosarcoma has decreased due to advances in treatment methods. Today, the scientific community is investigating the use of different naturally derived active principles against various types of cancer. Natural bioactive compounds can function against cancer cells in two ways. Firstly they can act as classical cytotoxic compounds by non-specifically affecting macromolecules, such as DNA, enzymes, and microtubules, which are also expressed in normal proliferating cells, but to a greater extent by cancer cells. Secondly, they can act against oncogenic signal transduction pathways, many of which are activated in cancer cells. Some bioactive plant-derived agents are gaining increasing attention because of their anti-cancer properties. Moreover, some naturally-derived compounds can significantly promote the effectiveness of standard chemotherapy drugs, and in certain cases are able to ameliorate drug-induced adverse effects caused by chemotherapy. In the present review we summarize the effects of various naturally-occurring bioactive compounds against osteosarcoma.
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Affiliation(s)
- Mohammad Tobeiha
- School of Medicine, Kashan University of Medical Sciences, Kashan, Iran; Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
| | - Ali Rajabi
- School of Medicine, Kashan University of Medical Sciences, Kashan, Iran; Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
| | - Arash Raisi
- School of Medicine, Kashan University of Medical Sciences, Kashan, Iran; Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
| | - Mahshad Mohajeri
- School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Amirhossein Davoodvandi
- Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran; Cancer Immunology Project (CIP), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Fatemeh Aslanbeigi
- School of Medicine, Kashan University of Medical Sciences, Kashan, Iran; Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
| | - MohamadSadegh Vaziri
- Student Research Committee, Hormozgan University of Medical Sciences, Bandar Abbas, Iran.
| | - Michael R Hamblin
- Laser Research Centre, Faculty of Health Science, University of Johannesburg, Doornfontein 2028, South Africa.
| | - Hamed Mirzaei
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran.
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Satyavarapu EM, Sinha PK, Mandal C. Preclinical Development of Mahanine-Enriched Fraction from Indian Spice Murraya koenigii for the Management of Cancer: Efficacy, Temperature/pH stability, Pharmacokinetics, Acute and Chronic Toxicity (14-180 Days) Studies. Biomed Res Int 2020; 2020:4638132. [PMID: 32851075 DOI: 10.1155/2020/4638132] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 06/23/2020] [Indexed: 12/18/2022]
Abstract
Murraya koenigii is well documented in the Indian ancient medical text “Charaka Samhita.” The carbazole alkaloid “mahanine” from this plant exhibited anticancer activity against several cancers. Here, we have taken a comprehensive study to standardize the method for the preparation of a mahanine-enriched fraction (MEF) with the highest yield and defined markers. Our optimized method produced MEF having the highest amount of mahanine, a major marker, with excellent in vitro antiproliferative activity against ovarian and breast cancer cells as evidenced by decreased cell viability by MTT assay. Moreover, it exhibited condensed and fragmented nuclei by DAPI staining and increased annexin V-/PI-stained cells after MEF treatment, indicating apoptosis. It also exhibited good efficacy in ovarian and breast cancer syngeneic mice models, with an ED50 of 300 mg/kg body weight (BW). MEF is stable up to 40°C for ≥3 months. Its biological activity remains unchanged at a wide range of pH (1-10) for up to ~3 hours, indicating a safe oral route of administration. Additionally, the comparative pharmacokinetics of MEF and mahanine in rats showed a 31% higher bioavailability of mahanine in MEF-fed rats compared to rats fed with mahanine alone. Furthermore, mice fed with MEF at 5000 mg/kg BW single dose, 300-1500 mg/kg BW/day for 14 days, and 300 mg/kg BW/day for 28, 90, and 180 days for subacute, subchronic, chronic studies, respectively, did not show any significant clinical signs of toxicity, behavioral changes, mortality, organ weights, serum biochemistry, and hematological parameters indicating no/minimum toxicity for up to 180 days. To the best of our knowledge, this is the first report showing the pH/temperature stability and chronic toxicity studies of MEF along with in vivo efficacy against breast cancer. Taken together, our study will enhance the commercial value of this highly potential medicinal plant and will be helpful as a reference material for its clinical development.
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Fraguas-Sánchez AI, Fernández-Carballido A, Martin-Sabroso C, Torres-Suárez AI. Stability characteristics of cannabidiol for the design of pharmacological, biochemical and pharmaceutical studies. J Chromatogr B Analyt Technol Biomed Life Sci 2020; 1150:122188. [PMID: 32506012 DOI: 10.1016/j.jchromb.2020.122188] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [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: 01/23/2020] [Revised: 05/09/2020] [Accepted: 05/20/2020] [Indexed: 11/17/2022]
Abstract
Cannabidiol (CBD) is one of the most promising cannabinoids in therapeutics. Nevertheless, the reported stability testing has been carried out with plant extracts and not with CBD as a drug substance. The aim of this work was to evaluate the stability of CBD in solution. A High-Performance Liquid Chromatography (HPLC) analytical method, with CBD in ethanol, was previously validated for these stability studies. The resulting method was linear and proportional in a range of concentrations from 1 to 150 µg CBD/mL, as well as precise. It was also considered suitable to quantify CBD in aqueous medium as reported in accuracy studies. The stability of CBD was influenced by multiple factors. Temperature was one of the most critical parameters, with an activation energy of 92.19KJ/mol. At room temperature, CBD was highly unstable (t95 = 117.13 days). However, at 5 °C it was stable for at least 12 months. CBD was also sensitive to oxidation, with a short t95 of 1.77 days in oxidizing environments, as well as to light. The photolytic reaction seems to be oxidative. The solvent influences CBD stability, and the latter is more stable in ethanol than in aqueous medium. In fact, in simulated physiological conditions (pH 7.4 and 37 °C) 10% of CBD was degraded within 24 h. These studies indicate that CBD is highly unstable, and this should be taken into account in the development of in vitro and in vivo studies of CBD activity and in the pharmaceutical development of dosage forms.
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Affiliation(s)
- A I Fraguas-Sánchez
- Department of Pharmacy and Pharmaceutical Technology, School of Pharmacy, Complutense University of Madrid, Pl Ramón y Cajal s/n., 28040 Madrid, Spain
| | - A Fernández-Carballido
- Department of Pharmacy and Pharmaceutical Technology, School of Pharmacy, Complutense University of Madrid, Pl Ramón y Cajal s/n., 28040 Madrid, Spain; Institute of Industrial Pharmacy, School of Pharmacy, Complutense University of Madrid, Pl Ramón y Cajal s/n., Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - C Martin-Sabroso
- Department of Pharmacy and Pharmaceutical Technology, School of Pharmacy, Complutense University of Madrid, Pl Ramón y Cajal s/n., 28040 Madrid, Spain
| | - A I Torres-Suárez
- Department of Pharmacy and Pharmaceutical Technology, School of Pharmacy, Complutense University of Madrid, Pl Ramón y Cajal s/n., 28040 Madrid, Spain; Institute of Industrial Pharmacy, School of Pharmacy, Complutense University of Madrid, Pl Ramón y Cajal s/n., Universidad Complutense de Madrid, 28040 Madrid, Spain.
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Gala UH, Miller DA, Williams RO 3rd. Harnessing the therapeutic potential of anticancer drugs through amorphous solid dispersions. Biochim Biophys Acta Rev Cancer 2020; 1873:188319. [PMID: 31678141 DOI: 10.1016/j.bbcan.2019.188319] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 10/28/2019] [Accepted: 10/28/2019] [Indexed: 12/19/2022]
Abstract
The treatment of cancer is still a major challenge. But tremendous progress in anticancer drug discovery and development has occurred in the last few decades. However, this progress has resulted in few effective oncology products due to challenges associated with anticancer drug delivery. Oral administration is the most preferred route for anticancer drug delivery, but the majority of anticancer drugs currently in product pipelines and the majority of those that have been commercially approved have inherently poor water solubility, and this cannot be mitigated without compromising their potency and stability. The poor water solubility of anticancer drugs, in conjunction with other factors, leads to suboptimal pharmacokinetic performance. Thus, these drugs have limited efficacy and safety when administered orally. The amorphous solid dispersion (ASD) is a promising formulation technology that primarily enhances the aqueous solubility of poorly water-soluble drugs. In this review, we discuss the challenges associated with the oral administration of anticancer drugs and the use of ASD technology in alleviating these challenges. We emphasize the ability of ASDs to improve not only the pharmacokinetics of poorly water-soluble anticancer drugs, but also their efficacy and safety. The goal of this paper is to rationalize the application of ASD technology in the formulation of anticancer drugs, thereby creating superior oncology products that lead to improved therapeutic outcomes.
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Yang JS, Lin RC, Hsieh YH, Wu HH, Li GC, Lin YC, Yang SF, Lu KH. CLEFMA Activates the Extrinsic and Intrinsic Apoptotic Processes through JNK1/2 and p38 Pathways in Human Osteosarcoma Cells. Molecules 2019; 24:molecules24183280. [PMID: 31505816 PMCID: PMC6767181 DOI: 10.3390/molecules24183280] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 09/01/2019] [Accepted: 09/05/2019] [Indexed: 12/19/2022] Open
Abstract
Due to the poor prognosis of metastatic osteosarcoma, chemotherapy is usually employed in the adjuvant situation to improve the prognosis and the chances of long-term survival. 4-[3,5-Bis(2-chlorobenzylidene)-4-oxo-piperidine-1-yl]-4-oxo-2-butenoic acid (CLEFMA) is a synthetic analog of curcumin and possesses anti-inflammatory and anticancer properties. To further obtain information regarding the apoptotic pathway induced by CLEFMA in osteosarcoma cells, microculture tetrazolium assay, annexin V-FITC/PI apoptosis staining assay, human apoptosis array, and Western blotting were employed. CLEFMA dose-dependently decreased the cell viabilities of human osteosarcoma U2OS and HOS cells and significantly induced apoptosis in human osteosarcoma cells. In addition to the effector caspase 3, CLEFMA significantly activated both extrinsic caspase 8 and intrinsic caspase 9 initiators. Moreover, CLEFMA increased the phosphorylation of extracellular signal-regulated protein kinases (ERK)1/2, c-Jun N-terminal kinases (JNK)1/2 and p38. Using inhibitors of JNK (JNK-in-8) and p38 (SB203580), CLEFMA’s increases of cleaved caspases 3, 8, and 9 could be expectedly suppressed, but they could not be affected by co-treatment with the ERK inhibitor (U0126). Conclusively, CLEFMA activates both extrinsic and intrinsic apoptotic pathways in human osteosarcoma cells through JNK and p38 signaling. These findings contribute to a better understanding of the mechanisms responsible for CLEFMA’s apoptotic effects on human osteosarcoma cells.
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Affiliation(s)
- Jia-Sin Yang
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung 402, Taiwan.
- Institute of Medicine, Chung Shan Medical University, Taichung 402, Taiwan.
| | - Renn-Chia Lin
- Institute of Medicine, Chung Shan Medical University, Taichung 402, Taiwan.
- Department of Orthopedics, Chung Shan Medical University Hospital, Taichung 402, Taiwan.
- School of Medicine, Chung Shan Medical University, Taichung 402, Taiwan.
- Division of Hyperbaric Oxygen Therapy and Wound Medicine, Chung Shan Medical University Hospital, Taichung 402, Taiwan.
| | - Yi-Hsien Hsieh
- Institute of Biochemistry, Microbiology and Immunology, Chung Shan Medical University, Taichung 402, Taiwan.
| | - Heng-Hsiung Wu
- Graduate Institute of Biomedical Science, China Medical University, Taichung 404, Taiwan.
- Research Center of Tumor Medical Science, China Medical University, Taichung 404, Taiwan.
- Center for Molecular Medicine, China Medical University Hospital, Taichung 404, Taiwan.
| | - Geng-Chung Li
- Institute of Biochemistry, Microbiology and Immunology, Chung Shan Medical University, Taichung 402, Taiwan.
| | - Ya-Chiu Lin
- Institute of Medicine, Chung Shan Medical University, Taichung 402, Taiwan.
| | - Shun-Fa Yang
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung 402, Taiwan.
- Institute of Medicine, Chung Shan Medical University, Taichung 402, Taiwan.
| | - Ko-Hsiu Lu
- Department of Orthopedics, Chung Shan Medical University Hospital, Taichung 402, Taiwan.
- School of Medicine, Chung Shan Medical University, Taichung 402, Taiwan.
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Stępniowska A, Sztanke M, Tuzimski T, Korolczuk M, Sztanke K. Square-wave adsorptive stripping voltammetric approaches at two in situ modified electrodes as first analytical methods for the quantitative determination of a new anticancer drug candidate. J IRAN CHEM SOC 2019. [DOI: 10.1007/s13738-019-01735-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Ioele G, Tavano L, Luca M, Muzzalupo R, Mancuso A, Ragno G. Light-sensitive drugs in topical formulations: stability indicating methods and photostabilization strategies. Future Med Chem 2017; 9:1795-808. [PMID: 28925725 DOI: 10.4155/fmc-2017-0105] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Photostability tests applied on commercial specialties for topical use have demonstrated a greater vulnerability of several drugs, due to greater exposure to light than other pharmaceutical forms. Photodegradation of a drug can considerably modify its pharmacokinetic behavior by varying the therapeutic index. The evaluation of the degradation profile of a drug, according to the ICH rules, is of primary importance in developing an appropriate topical formulation. Advanced strategies have been proposed to increase the protection from the light of the photolabile drugs. Supramolecular systems have been investigated to improve both pharmacokinetic profile and photostability. In this review, the more recent stability-monitoring methods for the analysis of drugs in topical formulations are collected and the main approaches for the drug photostabilization are discussed.
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Bisht R, Rupenthal ID, Sreebhavan S, Jaiswal JK. Development of a novel stability indicating RP-HPLC method for quantification of Connexin43 mimetic peptide and determination of its degradation kinetics in biological fluids. J Pharm Anal 2017; 7:365-373. [PMID: 29404061 PMCID: PMC5790747 DOI: 10.1016/j.jpha.2017.06.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 06/20/2017] [Accepted: 06/21/2017] [Indexed: 11/30/2022] Open
Abstract
Connexin43 mimetic peptide (Cx43MP) has been intensively investigated for its therapeutic effect in the management of inflammatory eye conditions, spinal cord injury, wound healing and ischemia-induced brain damage. Here, we report on a validated stability–indicating reversed-phase high performance liquid chromatography (RP-HPLC) method for the quantification of Cx43MP under stress conditions. These included exposure to acid/base, light, oxidation and high temperature. In addition, the degradation kinetics of the peptide were evaluated in bovine vitreous and drug-free human plasma at 37 °C. Detection of Cx43MP was carried out at 214 nm with a retention time of 7.5 min. The method showed excellent linearity over the concentration range of 0.9–250 µg/mL (R2 ≥ 0.998), and the limits of detection (LOD) and quantification (LOQ) were found to be 0.90 and 2.98 μg/mL, respectively. The accuracy of the method determined by the mean percentage recovery at 7.8, 62.5 and 250 µg/mL was 96.79%, 98.25% and 99.06% with a RSD of < 2.2%. Accelerated stability studies revealed that Cx43MP was more sensitive to basic conditions and completely degraded within 24 h at 37 °C (0% recovery) and within 12 h at 80 °C (0.34% recovery). Cx43MP was found to be more stable in bovine vitreous (t1/2slow= 171.8 min) compared to human plasma (t1/2slow = 39.3 min) at 37 °C according to the two phase degradation kinetic model. These findings are important for further pre-clinical development of Cx43MP.
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Affiliation(s)
- Rohit Bisht
- Buchanan Ocular Therapeutics Unit (BOTU), Department of Ophthalmology, New Zealand National Eye Centre, Faculty of Medical and Health Sciences, University of Auckland, Auckland 1142, New Zealand
| | - Ilva D Rupenthal
- Buchanan Ocular Therapeutics Unit (BOTU), Department of Ophthalmology, New Zealand National Eye Centre, Faculty of Medical and Health Sciences, University of Auckland, Auckland 1142, New Zealand
| | - Sreevalsan Sreebhavan
- Auckland Cancer Society Research Centre, Faculty of Medical and Health Sciences, University of Auckland, Auckland 1142, New Zealand
| | - Jagdish K Jaiswal
- Auckland Cancer Society Research Centre, Faculty of Medical and Health Sciences, University of Auckland, Auckland 1142, New Zealand
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