Chemometrics in Pharmaceutical Research

A special issue of Pharmaceuticals (ISSN 1424-8247). This special issue belongs to the section "Pharmaceutical Technology".

Deadline for manuscript submissions: closed (30 November 2023) | Viewed by 2131

Special Issue Editor


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Guest Editor
1. School of Pharmacy, Second Military Medical University, Shanghai 200433, China
2. Shanghai Key Laboratory for Pharmaceutical Metabolite Research, School of Pharmacy, Second Military Medical University, Shanghai 200433, China
Interests: similarity evaluation (SA); principal components analysis (PCA); hierarchical clustering analysis (HCA); fingerprint; quality evaluation; gut–liver axis; gut–brain axis; metabolism

Special Issue Information

Dear Colleagues,

Chemometrics is based on computer technology and establishes a relationship between the measured value and the state of a chemical system through statistical or mathematical methods. It can be used to achieve data dimension reduction, identification and classification for complex measurement data, such that multivariate information can be fully integrated and the differences in substances may be reflected correctly, truly and completely. Therefore, it is often combined with metabolomics and fingerprinting methods to extract valuable information.

Chemometrics can be divided into two types: unsupervised pattern and supervised pattern. Unsupervised pattern is a classification method with unknown sample categories and no training process. It only projects the similarity and difference in the data structure to a two-dimensional or three-dimensional space through dimensionality reduction, which is convenient for directly observing the classification of samples. PCA is arguably one of the most useful and extensive unsupervised methods used in chemometrics for exploratory data analyses. Supervised pattern needs to use computer algorithms to learn the classified training samples to build a mathematical model, and use the established model to classify and predict the validation samples. The degree of conformity between the predicted results and the actual classification results is used as an index of model prediction accuracy. The methods commonly used in supervised pattern include linear discriminant analysis (LDA), partial least squares discriminant analysis (PLS-DA), orthogonal partial least squares discriminant analysis (OPLS-DA) and artificial neural networks (ANNs).

In this Special Issue, we invite authors to contribute articles focusing on chemometrics in pharmaceutical research. The collected articles in this Special Issue will further bring new ideas and new directions to the development of the field of pharmaceutical analytical chemistry.

Dr. Tingting Zhou
Guest Editor

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Keywords

  • chemometrics
  • metabolomics
  • fingerprint
  • principle component analysis (PCA)
  • linear discriminant analysis (LDA)
  • partial least squares discriminant analysis (PLS-DA)
  • orthogonal partial least squares discriminant analysis (OPLS-DA)
  • artificial neural networks (ANNs)

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Published Papers (1 paper)

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Research

29 pages, 20132 KiB  
Article
A Systematic Study of Yiqi Qubai Standard Decoction for Treating Vitiligo Based on UPLC-Q-TOF/MS Combined with Chemometrics, Molecular Docking, and Cellular and Zebrafish Assays
by Lijun Cui, Cui Ma, Wenqing Shi, Chen Yang, Jiangping Wu, Zhenghua Wu, Yuefen Lou and Guorong Fan
Pharmaceuticals 2023, 16(12), 1716; https://doi.org/10.3390/ph16121716 - 11 Dec 2023
Cited by 1 | Viewed by 1658
Abstract
The Yiqi Qubai (YQ) formula is a hospital preparation for treating vitiligo in China that has had reliable efficacy for decades. The formula consists of four herbs; however, the extraction process to produce the formula is obsolete and the active ingredients and mechanisms [...] Read more.
The Yiqi Qubai (YQ) formula is a hospital preparation for treating vitiligo in China that has had reliable efficacy for decades. The formula consists of four herbs; however, the extraction process to produce the formula is obsolete and the active ingredients and mechanisms remain unknown. Therefore, in this paper, fingerprints were combined with the chemometrics method to screen high-quality herbs for the preparation of the YQ standard decoction (YQD). Then, the YQD preparation procedure was optimized using response surface methodology. A total of 44 chemical constituents, as well as 36 absorption components (in rat plasma) of YQD, were identified via UPLC-Q-TOF/MS. Based on the ingredients, the quality control system of YQD was optimized by establishing the SPE-UPLC-Q-TOF/MS identification method and the HPLC quantification method. Network pharmacological analysis and molecular docking showed that carasinaurone, calycosin-7-O-β-d-glucoside, methylnissolin-3-O-glucoside, genkwanin, akebia saponin D, formononetin, akebia saponin B, and apigenin may be the key active components for treating vitiligo; the core targets associated with them were AKT1, MAPK1, and mTOR, whereas the related pathways were the PI3K-Akt, MAPK, and FoxO signaling pathways. Cellular assays showed that YQD could promote melanogenesis and tyrosinase activity, as well as the transcription and expression of tyrosinase-associated proteins (i.e., TRP-1) in B16F10 cells. In addition, YQD also increased extracellular tyrosinase activity. Further efficacy validation showed that YQD significantly promotes melanin production in zebrafish. These may be the mechanisms by which YQD improves the symptoms of vitiligo. This is the first systematic study of the YQ formula that has optimized the standard decoction preparation method and investigated the active ingredients, quality control, efficacy, and mechanisms of YQD. The results of this study lay the foundations for the clinical application and further development of the YQ formula. Full article
(This article belongs to the Special Issue Chemometrics in Pharmaceutical Research)
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