Research Topic

Pharmacological Effects of Traditional Chinese Medicine on Cardiovascular Disease

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About this Research Topic

1. Background of diseases
Cardiovascular diseases include ischemic and hemorrhagic diseases involving the heart, brain, whole body tissue, and includes coronary heart disease, heart failure, arrhythmia, atherosclerosis and stroke. This particular group of diseases continue to be a leading cause of ...

1. Background of diseases
Cardiovascular diseases include ischemic and hemorrhagic diseases involving the heart, brain, whole body tissue, and includes coronary heart disease, heart failure, arrhythmia, atherosclerosis and stroke. This particular group of diseases continue to be a leading cause of death throughout the world with mortality rate remaining high. Currently, drugs administered orally and intravenously and surgical treatments are used to treat such diseases.

2. The applications and problems of TCM in the treating these diseases
Traditional Chinese medicine (TCM) refers to natural herbal medicines and their processed products used for preventing and treating disease under the guidance of traditional Chinese medicine's theory. The implementation of prevention and treatment programs of ischemic cardiovascular diseases with the use of TCM have been associated with positive outcomes; in terms of a reduction in the disability and mortality rate of some patients. Other studies have also shown that specific multi-component TCM preparations have therapeutic benefits based on multi-target and multi-pathway mechanisms, which may have advantages over the current single-component and single-target therapy. Based these characteristics, approved pharmaceutical drugs based in TCM, such as Compound Danshen Dripping Pills, Naoxintong Capsules, Tonxinluo Capsules, and Danhong Injection, are currently used to treat cardiovascular diseases.

However, there are a number of areas that still need further investigation. For example, the identification of effective components in herbal medicine is essential in furthering our understanding of what occurs at a pharmacological level; the metabolizing pharmacological pathways of such components; the cellular target of the components; and the lack of standardized guidelines to enhance clinical research.

3. Objectives
This Research Topic will include evidence-based studies that aim to

• Understand the pharmacological effects, efficacy and safety of TCM preparations on preventing and treating cardiovascular diseases
• Explore the pharmacology of isolated natural products for treating these diseases
• Investigate the possible mechanism of action of TCM preparations
• Evaluate the negative and potentially toxic effects of TCM in treating cardiovascular diseases.

This Research Topic will contribute to a more evidence-based use of TCM preparations and to a critical appraisal of the existing evidence in favour or in contra of using specific preparations.

4. Guidelines
(1). Pharmacological research
This Research Topic will focus on studies on the pharmacokinetics, pharmacodynamics, pharmacology and clinical trials of compound preparations, single medicine and active components. We also welcome Review articles.

(2) Clinical research
This Research Topic also welcomes clinical research, which, however, must follow best-practice guidelines in clinical research. Clinical case studies combined with pharmacological research are encouraged. We hope this will help in better understanding the potential and limitations of specific TCM preparations in preventing and reducing the harm caused by such diseases, as well as determining further the role and contribution of pharmacology to clinical applications.

The four pillars of best practice in ethnopharmacology

With these guidelines we define in detail what constitutes best practice for manuscripts submitted to Frontiers in Pharmacology; Section Ethnopharmacology. They provide a basis for the peer review and build on the general requirements of Frontiers in Pharmacology.

1) Pharmacology

a) The manuscript (MS) must report a substantive body of ethnopharmacological research, to be considered as an independent addition to the literature. In general, we expect that such studies are based on local / traditional uses of plants or other natural substances which need to be spelled out clearly.

b) For pharmacological studies, the model used must be one which is either generally accepted in the field as valid or a credible alternative whose general development, and application in the reported instance, has been justified.

Specifically antioxidant activity must be based on a pharmacologically relevant in vivo or cell based model. Simple in silico and pharmacologically irrelevant assays for antioxidant activity (e.g. the DPPH assay, FRAP (Ferric Reducing Ability of Plasma), ABTS (2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid)) are not acceptable as a main tool for assessing an extract or a compound for activity.

c) Similarly, simple screening for anti-microbial effects of crude extracts is no longer state-of-the-art. Authors must follow the widely accepted standards for microbiological testing (cf. Cos et al. 2006 Anti-infective potential of natural products: How to develop a stronger in vitro ‘proof-of-concept’ Journal of Ethnopharmacology 106: 290–302) and subsequent methods papers. Such research is only meaningful if it contributes to our mechanistic understanding of anti-microbial effects, its specificity or identifies novel leads.

d) The dose ranges must be therapeutically relevant. While it will be impossible to define an exact cut-off, the literature in the field is now replete with studies which test extracts at implausibly high doses. Single dose studies will only be of relevance in exceptional circumstances (e.g. in case of specific complex pharmacological models). And of course, positive and negative controls must be included.

e) In order to establish therapeutic benefits, selectivity data are essential. How specific is the effect? Many compounds have non-selective in vitro effects and research on common compounds must be justified in terms of the potential therapeutic benefits. While such research may be relevant and have potential applications, authors will need to assess the specificity of a single compound or an extract rich in a well-studied compound (like rutin, curcumin, or quercitin) and provide evidence for the relevance and novelty of the approach.

f) Docking studies must be justified with affinity experiments, or other well established experimental methods to support a proposed mechanism of action. Algorithmic docking studies will not be accepted; these indicate if a compound will "fit" into a binding site but do not indicate the binding affinity or the ability to induce a conformational change.


2) Composition:

a) Botanical:

The identification of the study material must be described well. All species are fully validated using Kew MPNS portal or The Plant List initiative or Plants of the World Online Of course, full botanical documentation is essential (i.e. a voucher specimen deposited in a recognised herbarium). A scan of the voucher(s) is welcome as supplementary material and encourage authors to include the coordinates of the location where the material had been collected.

b) Chemical

- The composition of the study material must be described in sufficient detail. Chromatograms with a characterisation of the dominating compound(s) are preferable. If preparations are used which are available commercially quality parameters provided in pharmacopoeia must be provided. The material under study must be characterised using the methods of the relevant monograph

- If ‘pure’ compounds are used sufficient information on the level of purity must be included. Especially in in vitro models, the authors must be confident that the compounds are stable under the conditions used (for example, they do not degrade due to high concentrations of DMSO). A critical aspect that should be considered is how these assays and extraction protocols are linked to local and traditional uses. In this way, variables such as the solubility of the compound in the traditional preparation and in the analytical extraction protocol should be taken into consideration

- All chemical line structures must be drawn using a internationally accepted structure drawing programme, must be consistent and - if possible and relevant - the stereochemistry needs to be given.

c) Multiherbal preparations:

Very often multiherbal preparations are used. Full information on their composition (in terms of the botanical drugs / species included) and information on the rationale for studying this preparation needs to be included. It is essential that in these cases sufficient details are provided on the botanical (2a) and chemical (2b) characterisation.

3) Basic requirements and research ethics

Frontiers has very well developed guidelines relating to ethical aspects of a MS. Specifically, for Frontiers in Pharmacology (Ethnopharmacology) the following key requirements are essential:

a) The objectives of the research reported must be spelled out clearly and in detail. All MS must critically assess the scientific basis of the work and provide meaningful conclusions, which are based on a clear hypothesis / research question as defined in the introduction. Ethnopharmacological research must assess whether a compound or plant extract has a certain effect and it cannot be about ‘confirming an extract’s or compound’s effects or efficacy’.

b) Research must add new and scientifically substantive knowledge to our understanding of the pharmacology and use of medicinal plants. A key basis for this is a review of literature relevant to the pharmacological activity already reported on the species including possibly related taxa or compounds. This must be up-to-date, and clearly demonstrate the substantive addition to the literature the MS submitted represents. Simply using advanced measurements/techniques/protocols reproducing previous studies of the same plant product will only be accepted in exceptional circumstances (e.g. previously unknown, highly active components are discovered).

c) Compliance with all international ethical standards is essential. In the context of ethnopharmacology, the Convention on Biological Diversity and, most recently, the Nagoya Protocol are of particular relevance (https://www.cbd.int/abs/).

d) Research in ethnopharmacology is based on local and traditional knowledge often passed on orally over generations. Ultimately, research in this field must therefore benefit those populations who are or were the original keeper of this knowledge.

e) The use of animals must be justified in the context of novelty (see also part 1). It is ethically not acceptable to have yet another in vivo study on an already well-studied species, demonstrating some common activity (e.g. an anti-inflammatory effect studied in the rat-paw edema). The same is true for species which are chemically very similar (and generally are rich in common ingredient) to ones already studied pharmacologically. Such studies must ‘meet(s) the standards of rigor’ we expect in ethnopharmacology as defined in the Frontiers’ guidelines.

4) Other specific requirements

a) Studies focusing on local and traditional uses of plants (ethnopharmacological field studies) must be based on substantial, original data. The relevance of the MS in the context of previous studies in the geographical region must be spelled out clearly and it must contribute to the understanding of the therapeutic uses of plant species and inform experimental or clinical studies This includes an adequate presentation and discussion of the data. Also, social science centered studies (e.g. ethnobotanical studies or health system research of local and traditional medical systems) are welcome. This journal subscribes to the ConSEFS standards including any updates.

b) In case of reviews, we expect clearly defined scientific aims (objectives), a comprehensive, critical and specific assessment of the relevant information linking local and other medical uses to the biomedical and bioscientific evidence. Reviews need to define future research needs and priorities. It is essential that the scientific quality of the original articles cited is assessed. If pharmacological studies are reviewed, particular attention must be paid to assessing the quality of the studies.

c) Food plants are commonly reported to have pharmacological effects. Frontiers in Ethnopharmacology focuses on therapeutic benefits of such species and not on the general food/nutritional properties.


Keywords: pharmacology, cardiovascular disease, clinical research disease, ddi\cerebrovascular, diseases, neurodegenerative diseases, Traditional Chinese Medicine


Important Note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.

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