scholarly journals Chemical structures of phenylethanoid glycosides from Pedicularis species, their biological and pharmacological activities

2019 ◽  
pp. 54-60
Author(s):  
Nyamsuren E ◽  
Odontuya G
Keyword(s):  
Functional Group ◽  
Antioxidant Effect ◽  
In Vivo Studies ◽  
Phenylethanoid Glycosides ◽  
Pharmacological Activities ◽  
Chemical Structures ◽  
Structure Specification ◽  
Biological And Pharmacological Activities

In this review, we summarized the molecular structure specification of a unique component named as phenylethanoid glycosides from the genus Pedicularis L. and their biological and pharmacological activities. Until now, 40 phenylethanoid glycosides have been isolated and identified from the genus Pedicularis L. We classified the compounds into 4 main groups based on the functional group located at the 4′ position. According to the results of in vitro and in vivo studies, the extract containing phenylethanoid glycosides possesses antioxidative, antibacterial, anti-tumor and anti-fatigue activities as well as the increase in physical ability, hepatoprotection, and other effects. The antioxidant effect is the main biological activity of phenylethanoid glycosides. Хувилангын зүйл ургамлуудын фенилэтаноид гликозидуудын химийн бүтэц, биолог, фармакологийн идэвх Хураангуй: Бид энэхүү тойм өгүүлэлдээ Хувилангын (Pedicularis L.) төрөлд хамаарах ургамлуудын өвөрмөц бүрэлдэхүүн болох фенилэтаноид гликозидийн молекулын бүтцийн онцлог, тэдгээрийн биолог, фармакологийн идэвхийн судалгааны дүнг нэгтгэн бичлээ. Өнөөг хүртэл Хувилангын зүйл ургамлуудаас 40 фенилэтаноид гликозидийг ялгаж, бүтэц байгууламжийг тогтоосон байна. Бид тэдгээр бодисын молекулын бүтцэд дүн шинжилгээ хийж 4′ байрлал дахь халагч бүлэгт үндэслэн 4 бүлэгт ангилав. Фенилэтаноид гликозид зонхилонагуулагддаг ханд нь исэлдэлтийн эсрэг, бактер, хорт хавдрын эсийн өсөлтийг дарангуйлах идэвхтэй, ядралт багасгах, булчингийн үйл ажиллагааг дэмжих, элэг, тархийг гэмтэхээс хамгаалах үйлдэл үзүүлж байгаа нь in vitro ба in vivo туршилт судалгааны дүн харуулж байна. Исэлдэлтийг дарангуйлах үйлдэл бол фенилэтаноид гликозидуудын гол биологийн идэвх юм.Түлхүүр үг: Хувиланга, фенилэтаноид гликозид, каффейны хүчил, исэлдэлт дарангуйлах идэвх.

Novel Phytochemical Constituents and their Potential to Manage Diabetes

2020 ◽  
Vol 26 ◽  
Author(s):  
Shaik Ibrahim Khalivulla ◽  
Arifullah Mohammed ◽  
Kokkanti Mallikarjuna
Keyword(s):  
Natural Products ◽  
Large Population ◽  
World Health ◽  
In Vivo Studies ◽  
Antidiabetic Activity ◽  
Therapeutic Drug ◽  
Pharmacological Activities ◽  
Chemical Structures

Background: Diabetes is a chronic disease affecting a large population worldwide and stands as one of the major global health challenges to be tackled. According to World Health Organization, about 400 million are having diabetes worldwide and it is the seventh leading cause of deaths in 2016. Plant based natural products had been in use from ancient time as ethnomedicine for the treatment of several diseases including diabetes. As a result of that, there are several reports on plant based natural products displaying antidiabetic activity. In the current review, such antidiabetic potential compounds reported from all plant sources along with their chemical structures are collected, presented and discussed. This kind of reports are essential to pool the available information to one source followed by statistical analysis and screening to check the efficacy of all known compounds in a comparative sense. This kind of analysis can give rise to few numbers of potential compounds from hundreds, whom can further be screened through in vitro and in vivo studies, and human trails leading to the drug development. Methods: Phytochemicals along with their potential antidiabetic property were classified according to their basic chemical skeleton. The chemical structures of all the compounds with antidiabetic activities were elucidated in the present review. In addition to this, the distribution and their other remarkable pharmacological activities of each species is also included. Results: The scrutiny of literature led to identification of 44 plants with antidiabetic compounds (70) and other pharmacological activities. For the sake of information, the distribution of each species in the world is given. Many plant derivatives may exert antidiabetic properties by improving or mimicking the insulin production or action. Different classes of compounds including sulfur compounds (1-4), alkaloids (5-11), phenolic compounds (12-17), tannins (18-23), phenylpropanoids (24-27), xanthanoids (28-31), amino acid (32), stilbenoid (33), benzofuran (34), coumarin (35), flavonoids (36-49) and terpenoids (50-70) were found to be active potential compounds for antidiabetic activity. Of the 70 listed compounds, majorly 17 compounds are from triterpenoids, 13 flavonoids and 7 are from alkaloids. Among all the 44 plant species, maximum number (7) of compounds are reported from Lagerstroemia speciosa followed by Momordica charantia (6) and S. oblonga with 5 compounds. Conclusion: This is the first paper to summarize the established chemical structures of phytochemicals that have been successfully screened for antidiabetic potential and their mechanisms of inhibition. The reported compounds could be considered as potential lead molecules for the treatment of type-2 diabetes. Further, molecular and clinical trials are required to select and establish the therapeutic drug candidates.

scholarly journals Synthesis and Biochemical Evaluation of Baicalein Prodrugs

Pharmaceutics ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1516
Author(s):  
Sang-Hyun Son ◽  
Jinhong Kang ◽  
Myunghwan Ahn ◽  
Soyeon Nam ◽  
Yong Woo Jung ◽  
...  
Keyword(s):  
Atopic Dermatitis ◽  
Animal Studies ◽  
Functional Group ◽  
In Vivo Studies ◽  
Clinical Use ◽  
Plasma Exposure ◽  
Pharmacological Activities ◽  
Biochemical Evaluation

Baicalein (5,6,7-trihydroxy-2-phenyl-4H-1-benzopyran-4-one), a flavonoid analog from Scutellaria baicalensis, possesses several pharmacological activities including antioxidant, antiproliferative, and anti-inflammatory activities. We previously reported that baicalein inhibits the thymic stromal lymphopoietin (TSLP)/TSLP receptor (TSLPR) signaling pathways and can be used as an active ingredient in the treatment of asthma and atopic dermatitis. However, baicalein is rapidly metabolized to baicalin and baicalein-6-O-glucuronide in vivo, which limits its preclinical and clinical use. In this study, we designed, synthesized, and evaluated baicalein prodrugs that protect the OH group at the 7-position of the A ring in baicalein with the amino acid carbamate functional group. Comprehensive in vitro and in vivo studies identified compound 2 as a baicalein prodrug candidate that improved the plasma exposure of baicalein in mouse animal studies. Our results demonstrated that this prodrug approach could be further adopted to discover oral baicalein prodrugs.

scholarly journals Phenolic Composition and Antioxidant Activity of Plants Belonging to the Cephalaria (Caprifoliaceae) Genus

Plants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 952
Author(s):  
Małgorzata Chrząszcz ◽  
Barbara Krzemińska ◽  
Rafał Celiński ◽  
Katarzyna Szewczyk
Keyword(s):  
Antioxidant Activity ◽  
Lung Diseases ◽  
Antioxidative Activity ◽  
Biological Activities ◽  
Natural Antioxidants ◽  
Antioxidant Effect ◽  
In Vivo Studies ◽  
Phenolic Composition

The genus Cephalaria, belonging to the Caprifoliaceae family, is a rich source of interesting secondary metabolites, including mainly saponins which display a variety of biological activities, such as immunomodulatory, antimicrobial and hemolytic effects. Besides these compounds, flavonoids and phenolic acids were identified in Cephalaria species. Cephalaria is employed in traditional medicine e.g., to cure cardiac and lung diseases, rheumatism, and regulate menstruation. In this review we focus on the phenolic compound composition and antioxidative activity of Cephalaria species. The antioxidant effect can be explained by flavonoids present in all parts of these plants. However, future efforts should concentrate more on in vitro and in vivo studies and also on clinical trials in order to confirm the possibility of using these plants as natural antioxidants for the pharmacology, food or cosmetic industries.

scholarly journals Evidence for the role of high density lipoproteins in mediating the antioxidant effect of estrogens

2000 ◽  
pp. 79-83 ◽  
Author(s):  
W Abplanalp ◽  
MD Scheiber ◽  
K Moon ◽  
B Kessel ◽  
JH Liu ◽  
...  
Keyword(s):  
Density Lipoprotein ◽  
Antioxidant Effect ◽  
High Density ◽  
In Vivo Studies ◽  
Ldl Oxidation ◽  
High Density Lipoproteins ◽  
Oh Groups

Estrogens possess strong antioxidant effects in vitro, but in vivo studies in humans have yielded conflicting results. Little is known regarding factors that mediate the antioxidant effect of estrogens in vivo. In this study the potential role of high density lipoprotein (HDL) was examined. The antioxidant effect of estradiol-17beta (E2) added to low density lipoprotein (LDL) was lost after dialysis. In contrast, the antioxidant effect of E2 added to HDL was conserved after dialysis, suggesting that E2 was bound to HDL. Binding of E2 to LDL increased after esterification (especially to long chain fatty acids). In the presence of HDL, an increased amount of E2 was transferred to LDL. E2-17 ester was as potent as E2 in preventing LDL oxidation in vitro, but 3,17-diesters were not as effective (E2=E2-17 ester>E2-3 ester>E2-3,17 diester). This was also supported by experiments which showed that estrogens with masked 3-OH groups were not effective as antioxidants. These studies provide evidence that HDL could facilitate the antioxidant effect of E2 through initial association, esterification and eventual transfer of E2 esters to LDL. Therefore it is critical that HDL peroxidation parameters be evaluated in subjects receiving estrogen replacement therapy.

scholarly journals Phytosterols: Potential Metabolic Modulators in Neurodegenerative Diseases

2021 ◽  
Vol 22 (22) ◽  
pp. 12255
Author(s):  
Niti Sharma ◽  
Mario A. Tan ◽  
Seong Soo A. An
Keyword(s):  
Natural Products ◽  
Neurodegenerative Diseases ◽  
Plant Species ◽  
Biological Activities ◽  
Herbal Medicines ◽  
Pharmacological Activities ◽  
Isolated Structures ◽  
Biological And Pharmacological Activities

Phytosterols constitute a class of natural products that are an important component of diet and have vast applications in foods, cosmetics, and herbal medicines. With many and diverse isolated structures in nature, they exhibit a broad range of biological and pharmacological activities. Among over 200 types of phytosterols, stigmasterol and β-sitosterol were ubiquitous in many plant species, exhibiting important aspects of activities related to neurodegenerative diseases. Hence, this mini-review presented an overview of the reported studies on selected phytosterols related to neurodegenerative diseases. It covered the major phytosterols based on biosynthetic considerations, including other phytosterols with significant in vitro and in vivo biological activities.

scholarly journals Nanomedicine Based on Natural Products: Improving Clinical Application Potential

2022 ◽  
Vol 2022 ◽  
pp. 1-11
Author(s):  
Zhe Li ◽  
Tingting Zhao ◽  
Jiaxin Li ◽  
Qingying Yu ◽  
Yu Feng ◽  
...  
Keyword(s):  
Natural Products ◽  
Clinical Application ◽  
Medical Application ◽  
In Vivo Studies ◽  
Research Progress ◽  
Pharmacological Activities ◽  
Application Potential ◽  
Clinical Transformation

Natural products have antitumor, anti-inflammatory, antioxidant, and other pharmacological activities and are an important source of drugs for prevention and treatment of various diseases. However, the inherent defects of natural products in physiological media such as poor solubility and stability and short biological half-life limit their clinical application. In recent years, more and more attention has been paid to the science of drug delivery by nanoscale materials. A large number of in vitro and in vivo studies have further confirmed the efficacy and safety of nanomedicine based on natural products in preclinical models of various diseases. In this review, we summarized the achievements of nanomaterials in improving the efficacy of natural products, introduced the research progress in several key fields of natural product-based nanomedicine in medical application, and discussed the challenges and prospects of clinical transformation of nanomedicine.

Biological Effects of Licochalcones

2019 ◽  
Vol 19 (8) ◽  
pp. 647-656 ◽  
Author(s):  
Gatta Daniela Maria Pia ◽  
Franceschelli Sara ◽  
Felaco Mario ◽  
Speranza Lorenza
Keyword(s):  
Biological Effects ◽  
Biologically Active ◽  
Bioactive Molecules ◽  
Licorice Root ◽  
In Vivo Studies ◽  
Perennial Plant ◽  
Chemical Structures ◽  
Mediterranean Countries

Medicinal plants and their natural bioactive molecules, are evaluated as the foundation for health preservation and care of humanity. The licorice root, known as “Radix Glycyrrhizae”, is a perennial plant that comes from Mediterranean countries, central to southern Russia, Asia, Turkey, Iraq and Iran. The licorice root has been used in traditional Chinese medicines for centuries and has been defined as "the progenitor of herbs". The name 'Licorice' is derived from the ancient Greek word Glukurrhiza, meaning 'sweet root'. It consists of approximately 30 species, however, the most common ones consist of Glycyrrhiza glabra L., Glycyrrhiza uralensis Fisch and Glycyrrhiza Inflata. In addition, the licorice root contains chalcones, which are a part of an important class of natural products and are precursors of flavonoids. Chemically, chalcones are composed of two aromatic rings associated with α, β-unsaturated α-carbon ketone, representing the prima nucleus of the structure. They have been classified, according to chemical structures, in Licochalcone A, B, C, D, E, F and G. This review aims to highlight all the in vitro and in vivo studies that have been conducted on the licochalcones, extracted from Glycyrrhiza species. The main effects are as follows: anti-inflammatory, antioxidant, anticancer, antimicrobial, antiviral, antiallergic, antidiabetic, hepatotoxic and osteogenic. It is important to implement the introduction of biologically active natural molecules from the bench (research) to the bedside (clinical practice). However, in the future, it is required to conduct additional studies to validate these biological effects.

scholarly journals A Review on Ethnopharmacological Applications and Pharmacological Activities of Leea macrophylla

2021 ◽  
pp. 58-61
Keyword(s):  
Medicinal Plants ◽  
Modern Medicine ◽  
In Vivo Studies ◽  
Pharmacological Activities ◽  
Plant Parts ◽  
Synthetic Drugs ◽  
Research Activities ◽  
Anti Oxidant

Plants are used as a potential source of medicines since the prehistoric period. Medicinal plants are the richest bio-resource of drugs of a number of traditional systems of medicines. Medicinal plants can also be used as nutraceuticals, food supplements, folk medicines, pharmaceutical intermediates, and chemical entities for synthetic drugs. A good number of researches on medicinal plants have enriched the science of modern medicine over the last decades. Leea macrophylla (Leeaceae) locally known as ‘Hastikarna palasa’ is a shrub that has been used in herbal medicine as a cure for a number of disorders. Several studies have proven that the plant possesses potential antimicrobial, anti-oxidant, anti-inflammatory, analgesic, neuropharmacological and anti-diabetic activities. Tribal communities used the plant parts as a remedy for a number of ailments as well as nutritional products. Established in-vitro and in-vivo studies were conducted to get evidence of pharmacological activities of the plant parts. This review paper focuses on the phytopharmacological activities and traditional uses of the plant which may help further research activities on L. macrophylla by giving up-to-date information about the plant.

scholarly journals Chemical Compounds and Pharmacological Activities of Mangosteen (Garcinia mangostana L.) – Updated Review

2021 ◽  
Vol 12 (2) ◽  
pp. 2503-2516
Keyword(s):  
Research Field ◽  
In Vivo Studies ◽  
Future Research ◽  
Drug Candidate ◽  
Garcinia Mangostana ◽  
Pharmacological Activities ◽  
Tropical Fruit ◽  
Wide Range

Mangosteen (Garcinia mangostana L.) is a tropical fruit belonging to Guttiferae (syn. Clusiaceae) family. Research on mangosteen has been widely conducted. Also, numerous in vitro and in vivo studies related to mangosteen have been published, indicating its significance and potential usefulness in the research field. This review was constructed by collecting and analyzing more than 50 research articles to explore the phytochemical contents and the medicinal benefits of mangosteen. A significant level of xanthones greatly contributes to the extensive pharmacological activities of mangosteen. Apart from xanthones, mangosteen also contained benzophenones, flavonoids, and anthocyanins. Mangosteen had a wide range of pharmacological effects, including antioxidant, anti-acne, anti-aging, anti-hyperpigmentation, antibacterial, antidiabetic, anti-obesity, anti-inflammatory, antimalarial, antiparasitic, and antitumor. Additionally, mangosteen has shown an advantageous activity toward pathological conditions such as Alzheimer's, bipolar disorder, schizophrenia, neuropathic pain, and pulmonary fibrosis. This literature review indicated that xanthone in mangosteen had potential and promising to be developed as a drug candidate. More extensive explorations, especially in pharmacokinetic, pharmacodynamic, and xanthone targeting effects, are widely open to be carried out for future research.

A Review on Phytochemistry, Pharmacological Action, Ethanobotanical Uses and Nutritional Potential of Kedrostis foetidissima (Jacq.) Cogn.,

2020 ◽  
Vol 18 (1) ◽  
pp. 5-20 ◽  
Author(s):  
Kalaiseziyen Pavithra ◽  
Ganapathy Saravanan
Keyword(s):  
Biological Activities ◽  
Research Work ◽  
Pharmacological Action ◽  
Biologically Active ◽  
In Vivo Studies ◽  
Traditional Medicines ◽  
Chemical Structures ◽  
Medicinal Properties

Nature is an amazing source for food, shelter, clothing and medicine. An impressive number of modern drugs are isolated from many sources like plants, animals and microbes. The development of natural products from traditional medicines is of great importance to society. Modern concepts and methodologies with abundant clinical studies, unique diversity of chemical structures and biological activities aid the modern drug discovery process. Kedrostis foetidissima (Jacq.) Cogn., a traditional medicinal plant of the Cucurbitaceae family, is found in India, Sri Lanka, Ethiopia and Western Malaysia. Almost all parts of the plant are used in traditional systems of medicines and reported having medicinal properties in both in vitro and in vivo studies. In the last few years, extensive research work had been carried out using extracts and isolated phytoconstituents from Kedrostis foetidissima to confirm its pharmacology and biological activities. Many scientific reports show that crude extracts and extensive numbers of phytochemical constituents isolated from Kedrostis foetidissima have activities like antimicrobial, antioxidant, anticancer, gastroprotective, anti-inflammatory and various other important medicinal properties. The therapeutic properties of the plants are mainly attributed to the existence of phytoconstituents like phenols, alkaloids, flavonoids, tannins, terpenoids and steroids. This comprehensive review in various aspects gave a brief overview of phytoconstituents, nutritional values and medicinal property of the plant and might attract the researchers to explore its medicinal activity by discovering novel biologically active compounds that can serve as a lead compound in pharmaceutical and food industry.

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