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Marney LC, Choi J, Alcazar Magana A, Yang L, Techen N, Alam MN, Brandes M, Soumyanath A, Stevens JF, Maier CS. Liquid chromatography-mass spectrometry quantification of phytochemicals in Withania somnifera using data-dependent acquisition, multiple-reaction-monitoring, and parallel-reaction-monitoring with an inclusion list. Front Chem 2024; 12:1373535. [PMID: 39100918 PMCID: PMC11294917 DOI: 10.3389/fchem.2024.1373535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 05/27/2024] [Indexed: 08/06/2024] Open
Abstract
Characterization of botanical extracts by mass spectrometry-based metabolomics analysis helps in determining the phytochemical composition that underlies their bioactivity and potential health benefits, while also supporting reproducibility of effects in clinical trials. The quantification of seven withanolides in Withania somnifera using three mass-spectrometry methods was evaluated using Deming regression. Two high-resolution time-of-flight mass spectrometry methods were used, one operating in data-dependent acquisition mode and the other in parallel-reaction-monitoring mode with an inclusion list. The two high-resolution time-of-flight mass spectrometry methods were compared to a multiple-reaction-monitoring method. We evaluated in-source fragmentation of steroidal glycosides and optimized the methods accordingly. A novel software approach to integrating parallel-reaction-monitoring data acquired with an inclusion list was developed. Combining and comparing quantitative results allowed for quantitative specificity, good precision, and adjustment of instrument source conditions for optimal quantification by multiple-reaction-monitoring mass spectrometry, an analytical method that is widely accessible in analytical and phytochemical laboratories.
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Affiliation(s)
- Luke C. Marney
- Department of Chemistry, Oregon State University, Corvallis, OR, United States
- BENFRA Botanical Dietary Supplements Research Center, Oregon Health and Science University, Portland, OR, United States
| | - Jaewoo Choi
- Department of Chemistry, Oregon State University, Corvallis, OR, United States
- BENFRA Botanical Dietary Supplements Research Center, Oregon Health and Science University, Portland, OR, United States
| | - Armando Alcazar Magana
- Department of Chemistry, Oregon State University, Corvallis, OR, United States
- BENFRA Botanical Dietary Supplements Research Center, Oregon Health and Science University, Portland, OR, United States
- Linus Pauling Institute, Oregon State University, Corvallis, OR, United States
| | - Liping Yang
- Department of Chemistry, Oregon State University, Corvallis, OR, United States
- BENFRA Botanical Dietary Supplements Research Center, Oregon Health and Science University, Portland, OR, United States
| | - Natascha Techen
- BENFRA Botanical Dietary Supplements Research Center, Oregon Health and Science University, Portland, OR, United States
- National Center for Natural Products Research, University of Mississippi, University, MS, United States
| | - Md Nure Alam
- Department of Chemistry, Oregon State University, Corvallis, OR, United States
- BENFRA Botanical Dietary Supplements Research Center, Oregon Health and Science University, Portland, OR, United States
| | - Mikah Brandes
- BENFRA Botanical Dietary Supplements Research Center, Oregon Health and Science University, Portland, OR, United States
- Department of Neurology, Oregon Health and Science University, Portland, OR, United States
| | - Amala Soumyanath
- BENFRA Botanical Dietary Supplements Research Center, Oregon Health and Science University, Portland, OR, United States
- Department of Neurology, Oregon Health and Science University, Portland, OR, United States
| | - Jan F. Stevens
- BENFRA Botanical Dietary Supplements Research Center, Oregon Health and Science University, Portland, OR, United States
- Linus Pauling Institute, Oregon State University, Corvallis, OR, United States
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis, OR, United States
| | - Claudia S. Maier
- Department of Chemistry, Oregon State University, Corvallis, OR, United States
- BENFRA Botanical Dietary Supplements Research Center, Oregon Health and Science University, Portland, OR, United States
- Linus Pauling Institute, Oregon State University, Corvallis, OR, United States
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Gopalaiah SB, Jayaseelan K. Analytical Strategies to Investigate Molecular Signaling, Proteomics, Extraction and Quantification of Withanolides - A Comprehensive Review. Crit Rev Anal Chem 2024:1-25. [PMID: 38300174 DOI: 10.1080/10408347.2024.2307887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2024]
Abstract
Withanolides are the class of steroidal molecules getting greater emphasis in recent years. Quality control throughout the manufacturing and storage period is often one of the key problems that have restricted their broad use in India's indigenous and Ayurvedic medical systems for thousands of years. Because of their diverse clinical potential, withanolides have received a great deal of scientific attention. Analytical techniques are being devised for the automated isolation, identification, and estimation of every single protein within the cell as well as in herbal extracts of withanolides, due to which now researchers are interested in determining the effects of metabolism as well as various stimuli on protein expression, which made the study easier. This study discusses the potential use of hyphenated analytical methods that are reliable in understanding the molecular signaling features, proteome evaluation and characterization of withanolides, in addition to examining existing methodological limitations. The choice of analytical techniques for the withanolides analysis, however, relies on the nature of the sample matrix, the aim of the analysis, and the sensitivity of the technique.
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Affiliation(s)
- Sinchana B Gopalaiah
- Department of Pharmaceutical Analysis, SRM College of Pharmacy, SRM Institute of Science and Technology, Kattankulathur, India
| | - Kavitha Jayaseelan
- Department of Pharmaceutical Analysis, SRM College of Pharmacy, SRM Institute of Science and Technology, Kattankulathur, India
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Srivastava S, Sharma S, Deep S, Khare SK. Screening of Multitarget-Directed Natural Compounds as Drug Candidates for Alzheimer's Disease Using In Silico Techniques: Their Extraction and In Vitro Validation. ACS OMEGA 2023; 8:38118-38129. [PMID: 37867692 PMCID: PMC10586450 DOI: 10.1021/acsomega.3c04261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 08/18/2023] [Indexed: 10/24/2023]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder that impairs neurocognitive function. Acetylcholinesterase (AChE) and β-site APP cleaving enzyme 1 (BACE1) are the two main proteins implicated in AD. Indeed, the major available commercial drugs (donepezil, rivastigmine, and galantamine) against Alzheimer's are AChE inhibitors. However, none of these drugs are known to reverse or reduce the pathophysiological condition of the disease since there are multiple contributing factors to AD. Therefore, there is a need to develop a multitarget-directed ligand approach for its treatment. In the present study, plant bioactive compounds were screened for their AChE and BACE1 inhibition potential by conducting molecular docking studies. Considering their docking score and pharmacokinetic properties, limonin, peimisine, serratanine B, and withanolide A were selected as the lead compounds. Molecular dynamics simulations of these protein-ligand complexes confirmed the conformational and energetically stabilized enzyme-inhibitor complexes. The inhibition potential of the lead compounds was validated by in vitro enzyme assay. Withanolide A inhibited AChE (IC50 value of 107 μM) and showed mixed-type inhibition. At this concentration, it inhibited BACE1 activity by 57.10% and was stated as most effective. Both the compounds, as well as their crude extracts, were found to have no cytotoxic effect on the SH-SY5Y cell line.
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Affiliation(s)
- Sukriti Srivastava
- Enzyme
and Microbial Biochemistry Laboratory, Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Shilpa Sharma
- Biophysical
Chemistry Laboratory, Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Shashank Deep
- Biophysical
Chemistry Laboratory, Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Sunil Kumar Khare
- Enzyme
and Microbial Biochemistry Laboratory, Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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Jin Z, Cao Y, Zou H, Hao P, Xue Y. A New Method for Breath and Blood Alcohol Determination in Rats Using a Breath Alcohol Meter: An Experimental Study. IRANIAN JOURNAL OF PHARMACEUTICAL RESEARCH : IJPR 2022; 21:e129483. [PMID: 36937209 PMCID: PMC10016125 DOI: 10.5812/ijpr-129483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 08/19/2022] [Accepted: 08/31/2022] [Indexed: 11/16/2022]
Abstract
Background The use of police breath alcohol detectors in rat breath alcohol detection experiments has always been a challenge because of the small lung capacity and inability of rats to actively inhale. However, the method of using gas chromatography to detect blood alcohol concentration is time-consuming, complex, relatively expensive, and cannot achieve on-site detection and multi-point unlimited non-invasive detection. Objectives In this study, a laboratory method was validated for rat breath ethanol concentration (BrAC) measurement to estimate blood ethanol concentration (BAC) in rats. Methods The rats were placed in a gas collection bottle, the breath sample was drawn out with a syringe, and injected into the mouthpiece of the breath alcohol detector through a rubber tube. The results were immediately detected and automatically converted to BAC. Male rats were randomly divided into three groups. The control group received an intraperitoneal injection of normal saline, the liver injury group received an intraperitoneal injection of 50% Carbon tetrachloride (CCL4 1 mL.kg-1), and the induction group received an intraperitoneal injection of phenobarbital sodium (75 mg.kg-1). Western blot analysis was used to detect the protein expression of CYP2E1. Similar grouping and experimental methods were used for female rats. Results This method was reproducible. The metabolic activity of CYP2E1 was downregulated in the injury group and upregulated in the induction group, which was consistent with the results obtained for CYP2E1 protein expression. Conclusions Our results confirmed that the rat gas cylinder breath alcohol assay can be used for multiple detections with immediate and non-invasive determination of alcohol metabolizing capacity. This is important for studies that require repeated assessment of blood alcohol levels.
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Affiliation(s)
- Ziqi Jin
- Institute of Pharmacokinetics and Liver Molecular Pharmacology, Department of Pharmacology, Baotou Medical College, Baotou, Inner Mongolia, China
| | - Yingying Cao
- Institute of Pharmacokinetics and Liver Molecular Pharmacology, Department of Pharmacology, Baotou Medical College, Baotou, Inner Mongolia, China
| | - Huiqiong Zou
- Institute of Pharmacokinetics and Liver Molecular Pharmacology, Department of Pharmacology, Baotou Medical College, Baotou, Inner Mongolia, China
| | - Peipei Hao
- Institute of Pharmacokinetics and Liver Molecular Pharmacology, Department of Pharmacology, Baotou Medical College, Baotou, Inner Mongolia, China
| | - Yongzhi Xue
- Institute of Pharmacokinetics and Liver Molecular Pharmacology, Department of Pharmacology, Baotou Medical College, Baotou, Inner Mongolia, China
- Corresponding Author: Institute of Pharmacokinetics and Liver Molecular Pharmacology, Department of Pharmacology, Baotou Medical College, Baotou, Inner Mongolia, China.
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Singh SK, Valicherla GR, Bikkasani AK, Cheruvu SH, Hossain Z, Taneja I, Ahmad H, Raju KSR, Sangwan NS, Singh SK, Dwivedi AK, Wahajuddin M, Gayen JR. Elucidation of plasma protein binding, blood partitioning, permeability, CYP phenotyping and CYP inhibition studies of Withanone using validated UPLC method: An active constituent of neuroprotective herb Ashwagandha. JOURNAL OF ETHNOPHARMACOLOGY 2021; 270:113819. [PMID: 33460762 DOI: 10.1016/j.jep.2021.113819] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 10/01/2020] [Accepted: 01/11/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Withanone (WN), an active constituent of Withania somnifera commonly called Ashwagandha has remarkable pharmacological responses along with neurological activities. However, for a better understanding of the pharmacokinetic and pharmacodynamic behavior of WN, a comprehensive in-vitro ADME (absorption, distribution, metabolism, and excretion) studies are necessary. AIM OF THE STUDY A precise, accurate, and sensitive reverse-phase ultra-performance liquid chromatographic method of WN was developed and validated in rat plasma for the first time. The developed method was successfully applied to the in-vitro ADME investigation of WN. MATERIAL AND METHODS The passive permeability of WN was assayed using PAMPA plates and the plasma protein binding (PPB) was performed using the equilibrium dialysis method. Pooled liver microsomes of rat (RLM) and human (HLM) were used for the microsomal stability, CYP phenotyping, and inhibition studies. CYP phenotyping was evaluated using the specific inhibitors. CYP inhibition study was performed using specific probe substrates along with WN or specific inhibitors. RESULTS WN was found to be stable in the simulated gastric and intestinal environment and has a high passive permeability at pH 4.0 and 7.0 in PAMPA assay. The PPB of WN at 5 and 20 μg/mL concentrations were found to be high i.e. 82.01 ± 1.44 and 88.02 ± 1.15%, respectively. The in vitro half-life of WN in RLM and HLM was found to be 59.63 ± 2.50 and 68.42 ± 2.19 min, respectively. CYP phenotyping results showed that WN was extensively metabolized by CYP 3A4 and1A2 enzymes in RLM and HLM. However, the results of CYP Inhibition studies showed that none of the CYP isoenzymes were potentially inhibited by WN in RLM and HLM. CONCLUSION The in vitro results of pH-dependent stability, plasma stability, permeability, PPB, blood partitioning, microsomal stability, CYP phenotyping, and CYP inhibition studies demonstrated that WN could be a better phytochemical for neurological disorders.
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Affiliation(s)
- Sandeep K Singh
- Pharmaceutics & Pharmacokinetics Division, CSIR-Central Drug Research Institute, Lucknow, 226031, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Guru R Valicherla
- Pharmaceutics & Pharmacokinetics Division, CSIR-Central Drug Research Institute, Lucknow, 226031, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Anil K Bikkasani
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (R), Lucknow, 226301, India
| | - Srikanth H Cheruvu
- Pharmaceutics & Pharmacokinetics Division, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | - Zakir Hossain
- Pharmaceutics & Pharmacokinetics Division, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | - Isha Taneja
- Pharmaceutics & Pharmacokinetics Division, CSIR-Central Drug Research Institute, Lucknow, 226031, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Hafsa Ahmad
- Pharmaceutics & Pharmacokinetics Division, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | - Kanumuri S R Raju
- Pharmaceutics & Pharmacokinetics Division, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | - Neelam S Sangwan
- CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, 226015, India
| | - Shio K Singh
- Pharmaceutics & Pharmacokinetics Division, CSIR-Central Drug Research Institute, Lucknow, 226031, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Anil K Dwivedi
- Pharmaceutics & Pharmacokinetics Division, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | - Mohammad Wahajuddin
- Pharmaceutics & Pharmacokinetics Division, CSIR-Central Drug Research Institute, Lucknow, 226031, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Jiaur R Gayen
- Pharmaceutics & Pharmacokinetics Division, CSIR-Central Drug Research Institute, Lucknow, 226031, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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Tetali SD, Acharya S, Ankari AB, Nanakram V, Raghavendra AS. Metabolomics of Withania somnifera (L.) Dunal: Advances and applications. JOURNAL OF ETHNOPHARMACOLOGY 2021; 267:113469. [PMID: 33075439 DOI: 10.1016/j.jep.2020.113469] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 07/30/2020] [Accepted: 10/10/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Withania somnifera L. (Solanaceae), commonly known as Ashwagandha or Indian ginseng, is used in Ayurveda (Indian system of traditional medicine) for vitality, cardio-protection and treating other ailments, such as neurological disorders, gout, and skin diseases. AIM OF THE REVIEW We present a critical overview of the information on the metabolomics of W. somnifera and highlight the significance of the technique for use in quality control of medicinal products. We have also pointed out the use of metabolomics to distinguish varieties and to identify best methods of cultivation, collection, as well as extraction. MATERIAL AND METHODS The relevant information on medicinal value, phytochemical studies, metabolomics of W. somnifera, and their applications were collected from a rigorous electronic search through scientific databases, including Scopus, PubMed, Web of Science and Google Scholar. Structures of selected metabolites were from the PubChem. RESULTS The pharmacological activities of W. somnifera were well documented. Roots are the most important parts of the plant used in Ayurvedic preparations. Stem and leaves also have a rich content of bioactive phytochemicals like steroidal lactones, alkaloids, and phenolic acids. Metabolomic studies revealed that metabolite profiles of W. somnifera depended on plant parts collected and the developmental stage of the plant, besides the season of sample collection and geographical location. The levels of withanolides were variable, depending on the morpho/chemotypes within the species of W. somnifera. Although studies on W. somnifera were initiated several years ago, the complexity of secondary metabolites was not realized due to the lack of adequate and fool-proof technology for phytochemical fingerprinting. Sophistications in chromatography coupled to mass spectrometry facilitated the discovery of several new metabolites. Mutually complementary techniques like LC-MS, GC-MS, HPTLC, and NMR were employed to obtain a comprehensive metabolomic profile. Subsequent data analyses and searches against spectral databases enabled the annotation of signals and dereplication of metabolites in several numbers without isolating them individually. CONCLUSIONS The present review provides a critical update of metabolomic data and the diverse application of the technique. The identification of parameters for standardization and quality control of herbal products is essential to facilitate mandatory checks for the purity of formulation. Such studies would enable us to identify the best geographical location of plants and the time of collection. We recommend the use of metabolomic analysis of herbal products based on W. somnifera for quality control as well as the discovery of novel bioactive compounds.
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Affiliation(s)
- Sarada D Tetali
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, 500 046, Telangana State, India.
| | - Satyabrata Acharya
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, 500 046, Telangana State, India
| | - Aditya B Ankari
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, 500 046, Telangana State, India
| | - Vadthyavath Nanakram
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, 500 046, Telangana State, India
| | - Agepati S Raghavendra
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, 500 046, Telangana State, India.
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Ankad GM, Pai SR, Hiremath J, Hegde HV. Traditional Horticulture Practices Increase the Production of Selected Withanolides in Withania Somnifera (L.) Dunal—A RP-UFLC Analysis. J Chromatogr Sci 2020; 58:899-906. [DOI: 10.1093/chromsci/bmaa057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 02/19/2020] [Accepted: 08/08/2020] [Indexed: 12/07/2022]
Abstract
Abstract
The study evaluates the effect of two traditional horticulture treatments mentioned in Vrikshayurveda, a text from ancient India on the science of plant life, namely Kunapa jala (KJ) and Pancha gavya (PG) on the production of Withaferin A (WFA), withanolide A (WIA) and Withanolide B (WIB) in Withania somnifera (L) Dunal. Leaves and roots of W. somnifera were collected from different treated groups viz. control, KJ, PG, farmyard manure (FYM) and inorganic fertilizer (NPK). Reverse phase ultra-flow liquid chromatography (RP-UFLC) method was developed, validated for simultaneous detection of WFA, WIA and WIB. Statistical analysis of data was performed by ANOVA and tested for significance by the Dunnett multiple comparison test and data were expressed as mean ± standard deviation (SD). Results revealed, leaves possessed highest WFA content and roots possessed highest content of WIA and WIB. PG treated leaves were observed highest WFA (18.29 mg/g) and roots were observed highest WIA (19.63 mg/g) and WIB (1.36 mg/g). Conclusively, RP-UFLC method for simultaneous detection of withanolides has been developed and validated to evaluate the effect of traditional horticulture treatments. It is concluded that the enhanced production of withanolides can be achieved by the application of PG when compared to NPK application.
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Affiliation(s)
- Gireesh M Ankad
- ICMR—National Institute of Traditional Medicine, Nehru Nagar, Belgaum 590010, India
| | - Sandeep R Pai
- Department of Botany, Rayat Shikshan Sansthas, Dada Patil Mahavidyalaya, Karjat 414402, India
| | - Jagadishchandra Hiremath
- Department of Spices, Medicinal and Aromatic plants, Kittur Rani Chennamma of Horticulture, Arabhavi 591218, India
| | - Harsha V Hegde
- ICMR—National Institute of Traditional Medicine, Nehru Nagar, Belgaum 590010, India
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Mulabagal V, Annaji M, Kurapati S, Dash RP, Srinivas NR, Tiwari AK, Babu RJ. Stability-indicating HPLC method for acyclovir and lidocaine in topical formulations. Biomed Chromatogr 2019; 34:e4751. [PMID: 31756271 DOI: 10.1002/bmc.4751] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 10/24/2019] [Accepted: 11/14/2019] [Indexed: 11/11/2022]
Abstract
A simple, rapid and accurate stability-indicating HPLC assay was developed for the determination of acyclovir and lidocaine in topical formulations. Chromatographic separation of acyclovir and lidocaine was achieved using a reversed-phase C18 column and a gradient mobile phase (20 mm ammonium acetate pH 3.5 in water and acetonitrile). The degradation products of acyclovir and lidocaine in the samples were analyzed by ultra performance liquid chromatography-time of flight mass spectrometry. The HPLC method successfully resolved the analytes from the impurities and degradation products in the topical formulation. Furthermore, the method detected the analytes from the human skin leachables following the extraction of the analytes in the skin homogenate samples. The method showed linearity over wide ranges of 5-500 and 10-200 μg/ml for acyclovir and lidocaine in the topical product, respectively, with a correlation coefficient (r2 ) >0.9995. The relative standard deviations for precision, repeatability, and robustness of the method validation assays were <2%. The skin extraction efficiency for acyclovir and lidocaine was 92.8 ± 0.7% and 91.3 ± 3.2%, respectively, with no interference from the skin leachables. Thus, simultaneous quantification of acyclovir and lidocaine in the topical formulations was achieved.
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Affiliation(s)
- Vanisree Mulabagal
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA
| | - Manjusha Annaji
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA
| | - Sharmila Kurapati
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA
| | - Ranjeet Prasad Dash
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA
| | - Nuggehally R Srinivas
- Department of Innovation and Technology, Jubilant Life Sciences, Noida, Uttar Pradesh, India
| | - Amit K Tiwari
- Department of Pharmacology and Experimental Therapeutics, College of Pharmacy & Pharmaceutical Sciences, University of Toledo, Toledo, OH, USA
| | - R Jayachandra Babu
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA
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Singh SK, Valicherla GR, Joshi P, Shahi S, Syed AA, Gupta AP, Hossain Z, Italiya K, Makadia V, Singh SK, Wahajuddin M, Gayen JR. Determination of permeability, plasma protein binding, blood partitioning, pharmacokinetics and tissue distribution of Withanolide A in rats: A neuroprotective steroidal lactone. Drug Dev Res 2018; 79:339-351. [DOI: 10.1002/ddr.21463] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 08/13/2018] [Accepted: 08/14/2018] [Indexed: 01/13/2023]
Affiliation(s)
- Sandeep K. Singh
- Division of Pharmaceutics & Pharmacokinetics; CSIR-Central Drug Research Institute; Lucknow Uttar Pradesh India
- Academy of Scientific and Innovative Research (AcSIR); New Delhi India
| | - Guru R. Valicherla
- Division of Pharmaceutics & Pharmacokinetics; CSIR-Central Drug Research Institute; Lucknow Uttar Pradesh India
- Academy of Scientific and Innovative Research (AcSIR); New Delhi India
| | - Pankaj Joshi
- Division of Pharmaceutics & Pharmacokinetics; CSIR-Central Drug Research Institute; Lucknow Uttar Pradesh India
| | - Sudhir Shahi
- Division of Pharmaceutics & Pharmacokinetics; CSIR-Central Drug Research Institute; Lucknow Uttar Pradesh India
| | - Anees A. Syed
- Division of Pharmaceutics & Pharmacokinetics; CSIR-Central Drug Research Institute; Lucknow Uttar Pradesh India
| | - Anand P. Gupta
- Division of Pharmaceutics & Pharmacokinetics; CSIR-Central Drug Research Institute; Lucknow Uttar Pradesh India
| | - Zakir Hossain
- Division of Pharmaceutics & Pharmacokinetics; CSIR-Central Drug Research Institute; Lucknow Uttar Pradesh India
| | - Kishan Italiya
- Department of Pharmaceutics; National Institute of Pharmaceutical Education and Research; Raibareli Uttar Pradesh India
| | - Vishal Makadia
- Department of Pharmaceutics; National Institute of Pharmaceutical Education and Research; Raibareli Uttar Pradesh India
| | - Shio K. Singh
- Division of Pharmaceutics & Pharmacokinetics; CSIR-Central Drug Research Institute; Lucknow Uttar Pradesh India
| | - Mohammad Wahajuddin
- Division of Pharmaceutics & Pharmacokinetics; CSIR-Central Drug Research Institute; Lucknow Uttar Pradesh India
- Academy of Scientific and Innovative Research (AcSIR); New Delhi India
| | - Jiaur R. Gayen
- Division of Pharmaceutics & Pharmacokinetics; CSIR-Central Drug Research Institute; Lucknow Uttar Pradesh India
- Academy of Scientific and Innovative Research (AcSIR); New Delhi India
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