scholarly journals Mallotus philippensis (Lam.) Müll. Arg.: A review on its pharmacology and phytochemistry

2020 ◽  
Vol 10 (1) ◽  
pp. 31-50
Author(s):  
Abhishek Kumar ◽  
Meenu Patil ◽  
Pardeep Kumar ◽  
Ram Chand Bhatti ◽  
Rupinder Kaur ◽  
...  
Keyword(s):  
Drug Discovery ◽  
Present Article ◽  
Web Of Science ◽  
Biological Activities ◽  
Pharmacological Activities ◽  
Promising Candidate ◽  
Natural Origin ◽  
Different Types ◽  
Anti Oxidant

Kamala tree (Mallotus philippensis) is traditionally used by different ethnic groups to treat a variety of diseases and health ailments. However, these traditional uses need to be scientifically investigated and validated in order to develop drugs from this tree. Therefore, the present article is aimed to review the scientifically validated knowledge on the pharmacology and phytochemistry of the tree. To accomplish this, we extensively surveyed the available databases like Scopus, Web of Science, Google Scholar, ScienceDirect, NCBI including PubMed and PubChem, etc. by using keywords ‘Mallotus philippensis’, ‘Mallotus phillippinensis’ and ‘Mallotus philippinensis’. Our results indicated that the tree possesses more than 50 different types of important phytochemicals of natural origin. The wide array of phytochemicals possesses fascinating biological activities like anthelmintic, antibacterial, anti-inflammatory, anti-oxidant, anti-cancerous, anti-tuberculosis, anti-parasitic, analgesic, anti-urolithiatic and anti-viral activities. Thus, pharmacological activities and isolation of active phytochemicals make the tree a promising candidate for drug discovery. However, pharmacological activities such as antibacterial and anti-oxidant activities are often tested with crude extracts and in vitro rudimentary methods that can be sometimes misleading and non-specific. Thus, more sophisticated techniques may be applied for the isolation of active chemicals and elucidating their mechanism of actions.

scholarly journals Diplazium esculentum (Retz.) Sw.: Ethnomedicinal, Phytochemical, and Pharmacological Overview of the Himalayan Ferns

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Prabhakar Semwal ◽  
Sakshi Painuli ◽  
Kartik M. Painuli ◽  
Gizem Antika ◽  
Tugba Boyunegmez Tumer ◽  
...  
Keyword(s):  
Web Of Science ◽  
Biological Activities ◽  
Therapeutic Effects ◽  
Sustainable Utilization ◽  
Action Mechanism ◽  
Pharmacological Activities ◽  
Therapeutic Properties ◽  
Cns Stimulant

The genus Diplazium (family: Athyriaceae) comprises approximately 350 species of pteridophytes. Diplazium esculentum (Retz.) Sw. is an important member of this genus and commonly known as a wild vegetable in the Himalayan and sub-Himalayan communities. According to the literature analysis, D. esculentum was traditionally used for the prevention or treatment of several diseases such as diabetes, smallpox, asthma, diarrhea, rheumatism, dysentery, headache, fever, wounds, pain, measles, hypertension, constipation, oligospermia, bone fracture, and glandular swellings. Various extracts of D. esculentum were evaluated to elucidate their phytochemical and pharmacological activities. A wide array of pharmacological properties such as antioxidant, antimicrobial, antidiabetic, immunomodulatory, CNS stimulant, and antianaphylactic activities have been recognized in different parts of D. esculentum. The review covers a systematic examination of pharmacognosy, phytochemistry, and pharmacological applications of D. esculentum, but scientifically, it is not fully assessed regarding complete therapeutic effects, toxicity, and safety in the human body. The published literature on D. esculentum and its therapeutic properties were collected from different search engines including Wiley online, PubMed, Springer Link, Scopus, Science Direct, Web of Science, Google Scholar, and ACS publications by using specific terms such as “Diplazium esculentum, bioactive compounds, biological activities and health benefits” from 1984 to 2021 (March). Therefore, further studies are required to identify the detailed action mechanism of D. esculentum in vitro/in vivo, and also, more studies should focus on conservation, cultivation, and sustainable utilization of the species.

α-Glucosidase Inhibition, Antioxidant and Docking Studies of Hydroxycoumarins and their Mono and Bis O-alkylated/acetylated Analogs

2018 ◽  
Vol 15 (2) ◽  
pp. 127-135 ◽  
Author(s):  
Parvesh Singh ◽  
Nomandla Ngcoya ◽  
Ramgopal Mopuri ◽  
Nagaraju Kerru ◽  
Neha Manhas ◽  
...  
Keyword(s):  
In Silico ◽  
Biological Activities ◽  
Wide Spectrum ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Catalytic Site ◽  
Docking Simulations ◽  
In Silico Docking ◽  
Anti Oxidant

Background: Diabetes Mellitus (DM) is a complex metabolic disease illustrated by abnormally high levels of plasma glucose or hyperglycaemia. Accordingly, several α-glucosidase inhibitors have been developed for the treatment of diabetes and other degenerative disorders. While, a coumarin ring has the privilege to represent numerous natural and synthetic compounds with a wide spectrum of biological activities e.g. anti-cancer, anti-HIV, anti-viral, anti-malarial, anti-microbial, anti-convulsant, anti-hypertensive properties. Besides this, coumarins have also shown potential to inhibit α-glucosidase leading to a generation of new promising antidiabetic agents. However, the testing of O-substituted coumarins for α-glucosidase inhibition has evaded the attention of medicinal chemists. Methods: For O-alkylation/acetylation reactions, the hydroxyl coumarins (A-B) initially activated by K2CO3 in dry DMF were reacted with variedly substituted haloalkanes at room temperature under nitrogen. The synthesized compounds were tested for their α-glucosidase (from Saccharomyces cerevisiae) inhibitory activity and anti-oxidant activity using DPPH radical scavenging activity. In silico docking simulations were conducted using CDocker module in DS (Accelrys) to explore the binding modes of the representative compounds in the catalytic site of α-glucosidase. Results: All the coumarin analogues (A1, B1, A2-A10, B2-B8) including their precursors (A-B) were evaluated for their in vitro α-glucosidase inhibition using acarbose as a standard inhibitor. All the mono O-alkylated coumarins (except A1) showed significant (p <0.05) α-glucosidase inhibition relative to the hydroxyl coumarin (A) with IC50 values ranging between 11.084±0.117 to 145.24± 29.22 µg/mL. Compound 7-(benzyloxy)-4, 5-dimethyl-2H-chromen-2-one (A9) bearing a benzyl group (Ph-CH2-) at position 7 showed a remarkable (p <0.05) increase in the activity (IC50 = 11.084±0.117 µg/mL), almost four-fold more than acarbose (IC50 = 40.578±5.999 µg/mL). The introduction of –NO2 group dramatically improved the anti-oxidant activity of coumarin, while the O-alkylation/acetylation decreased the activity. Conclusion: The present study describes the synthesis of functionalized coumarins and their evaluation for α-glucosidase inhibition and antioxidant activity under in vitro conditions. Based on IC50 data, the mono O-alkylated coumarins were observed to be stronger inhibitors of α-glucosidase with respect to their bis O-alkylated analogues. Coumarin (A9) bearing O-benzyloxy group displayed the strongest α-glucosidase inhibition, even higher than the standard inhibitor acarbose. The coumarin (A10) bearing –NO2 group showed the highest anti-oxidant activity amongst the synthesized compounds, almost comparable to the ascorbic acid. Finally, in silico docking simulations revealed the role of hydrogen bonding and hydrophobic forces in locking the compounds in catalytic site of α-glucosidase.

scholarly journals Melatonin in Cancer Treatment: Current Knowledge and Future Opportunities

Molecules ◽  
2021 ◽  
Vol 26 (9) ◽  
pp. 2506
Author(s):  
Wamidh H. Talib ◽  
Ahmad Riyad Alsayed ◽  
Alaa Abuawad ◽  
Safa Daoud ◽  
Asma Ismail Mahmod
Keyword(s):  
Clinical Trials ◽  
Current Knowledge ◽  
Biological Activities ◽  
Experimental Studies ◽  
Therapeutic Effects ◽  
Cell Proliferation Inhibition ◽  
Different Types ◽  
Solid Foundation

Melatonin is a pleotropic molecule with numerous biological activities. Epidemiological and experimental studies have documented that melatonin could inhibit different types of cancer in vitro and in vivo. Results showed the involvement of melatonin in different anticancer mechanisms including apoptosis induction, cell proliferation inhibition, reduction in tumor growth and metastases, reduction in the side effects associated with chemotherapy and radiotherapy, decreasing drug resistance in cancer therapy, and augmentation of the therapeutic effects of conventional anticancer therapies. Clinical trials revealed that melatonin is an effective adjuvant drug to all conventional therapies. This review summarized melatonin biosynthesis, availability from natural sources, metabolism, bioavailability, anticancer mechanisms of melatonin, its use in clinical trials, and pharmaceutical formulation. Studies discussed in this review will provide a solid foundation for researchers and physicians to design and develop new therapies to treat and prevent cancer using melatonin.

Steroidal pyrazolines as a promising scaffold in drug discovery

2020 ◽  
Vol 12 (10) ◽  
pp. 949-959
Author(s):  
Ranju Bansal ◽  
Ranjit Singh
Keyword(s):  
Drug Discovery ◽  
Broad Spectrum ◽  
Chemical Reactivity ◽  
Biological Activities ◽  
Antimicrobial Activities ◽  
Review Article ◽  
Pharmacological Activities ◽  
Neuroprotective Effects ◽  
Wide Range

Steroidal pyrazolines constitute an interesting and promising scaffold for drug discovery as they display diverse chemical reactivity and a wide range of biological activities. Literature reports indicate potent anticancer potential of steroidal pyrazolines along with broad-spectrum antimicrobial activities. Strong neuroprotective effects with steroids possessing pyrazoline moiety have also been observed. Among all the therapeutically active steroidal pyrazolines, D-ring-substituted derivatives are highly potent and the least toxic. The current and futuristic research approaches in this area are focused towards the exploration of this promising scaffold to develop molecules with widespread pharmacological activities. This review article mainly covers the synthetic and pharmacological aspects of steroidal pyrazolines, which will assist the medicinal chemists working in this area in their scientific endeavors.

scholarly journals Further Evidence of Possible Therapeutic Uses of Sambucus nigra L. Extracts by the Assessment of the In Vitro and In Vivo Anti-Inflammatory Properties of Its PLGA and PCL-Based Nanoformulations

Pharmaceutics ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 1181
Author(s):  
Ana Henriques Mota ◽  
Noélia Duarte ◽  
Ana Teresa Serra ◽  
António Ferreira ◽  
Maria Rosário Bronze ◽  
...  
Keyword(s):  
Oleic Acid ◽  
Encapsulation Efficiency ◽  
Biological Activities ◽  
Sambucus Nigra ◽  
Therapeutic Uses ◽  
Solvent Displacement ◽  
Different Types ◽  
Anti Inflammatory

Sambucus nigra L. is widely used in traditional medicine with different applications. However, confirmative studies are strongly required. This study aimed to assess the biological activities of the S. nigra flower’s extract encapsulated into two different types of nanoparticles for optimizing its properties and producing further evidence of its potential therapeutic uses. Different nanoparticles (poly(lactide-co-glycolide, PLGA) and poly-Ɛ-caprolactone (PCL), both with oleic acid, were prepared by emulsification/solvent diffusion and solvent-displacement methods, respectively. Oleic acid was used as a capping agent. After the nanoparticles’ preparation, they were characterized and the biological activities were studied in terms of collagenase, in vitro and in vivo anti-inflammatory, and in vitro cell viability. Rutin and naringenin were found to be the major phenolic compounds in the studied extract. The encapsulation efficiency was higher than 76% and revealed to have an impact on the release of the extract, mainly for the PLGA. Moreover, biochemical and histopathological analyses confirmed that the extract-loaded PLGA-based nanoparticles displayed the highest anti-inflammatory activity. In addition to supporting the previously reported evidence of potential therapeutic uses of S. nigra, these results could draw the pharmaceutical industry’s interest to the novelty of the nanoproducts.

scholarly journals PHYTOCHEMICAL CONSTITUENTS AND PHARMACOLOGICAL ACTIVITIES OF Kigelia africana AND Mansoa alliacea - A COMPREHENSIVE REVIEW

2018 ◽  
Vol 11 ◽  
Author(s):  
Sowmyalakshmi Venkataraman ◽  
Gunda Srilakshmi
Keyword(s):  
Rural Areas ◽  
Biological Activities ◽  
Chemical Constituents ◽  
Reproductive Organ ◽  
Human Beings ◽  
Pharmacological Activities ◽  
Phytochemical Constituents ◽  
Athlete’S Foot ◽  
Collective Information

Context: The focus of the present review is to compile the different phytochemical constituents and pharmacological activities of bignoniaceous plants, namely Kigelia africana and Mansoa alliacea. Objective: Medicinal plants are routinely used in clinical practice for the treatment of various diseases of human beings over thousands of years across the world. In rural areas of the developing countries, they are still used in practice due to the easy availability of the medication. The main objective of this work is to explore the phytochemical studies and biological activities of plants belonging to Bignoniaceae family. Methods: The present study also discusses about the different phytochemical constituents of K. africana and M. alliacea that were isolated and characterized using various analytical methods. Different extracts of these plants were subjected to different in vitro anticancer, analgesic, antimicrobial, and antimalarial activities using earlier reported methods were also discussed. Results: K. africana is commonly referred to as sausage or cucumber tree due to its huge sausage or cucumber-like fruit. These plants find application as traditional medicine for treating several ailments such as malignant tumor, ulcer, aging, and malaria among others. It is conjointly used for the treatment of reproductive organ infections, renal ailments, dizziness, epilepsy, sickle cell disease, depression, metabolism disorders, skin grievance, leprosy, impetigo, helminthic infections, athlete’s foot, tumors, etc. These plant extracts have also been used as a cosmetic by enhancing the collagen action and thus exhibit antiaging properties. Conclusion: The present study attempts to provide collective information on various phytochemical constituents and pharmacological actions of K. africana and M. alliacea belonging to Bignoniaceae. This review in its present form is believed to help the researchers to provide adequate information about the chemical constituents and biological uses of these plants.

scholarly journals Biochemistry, Safety, Pharmacological Activities, and Clinical Applications of Turmeric: A Mechanistic Review

2020 ◽  
Vol 2020 ◽  
pp. 1-14 ◽  
Author(s):  
Rabia Shabir Ahmad ◽  
Muhammad Bilal Hussain ◽  
Muhammad Tauseef Sultan ◽  
Muhammad Sajid Arshad ◽  
Marwa Waheed ◽  
...  
Keyword(s):  
Clinical Research ◽  
Biological Activities ◽  
Curcuma Longa ◽  
Clinical Applications ◽  
Pharmacological Activities ◽  
Neuroprotective Effects ◽  
Wide Range ◽  
Different Types ◽  
Safety And Toxicity ◽  
Anti Inflammatory

Turmeric (Curcuma longa L.) is a popular natural drug, traditionally used for the treatment of a wide range of diseases. Its root, as its most popular part used for medicinal purposes, contains different types of phytochemicals and minerals. This review summarizes what is currently known on biochemistry, safety, pharmacological activities (mechanistically), and clinical applications of turmeric. In short, curcumin is considered as the fundamental constituent in ground turmeric rhizome. Turmeric possesses several biological activities including anti-inflammatory, antioxidant, anticancer, antimutagenic, antimicrobial, antiobesity, hypolipidemic, cardioprotective, and neuroprotective effects. These reported pharmacologic activities make turmeric an important option for further clinical research. Also, there is a discussion on its safety and toxicity.

scholarly journals The Multifunctional Effects of Nobiletin and Its MetabolitesIn VivoandIn Vitro

2016 ◽  
Vol 2016 ◽  
pp. 1-14 ◽  
Author(s):  
Hao Huang ◽  
Linfu Li ◽  
Weimei Shi ◽  
Hai Liu ◽  
Jianqiong Yang ◽  
...  
Keyword(s):  
Biological Activities ◽  
Signaling Cascades ◽  
Pharmacological Effects ◽  
Pharmacological Activities ◽  
Promising Candidate ◽  
Beneficial Effects ◽  
Pharmaceutical Agent ◽  
Intracellular Targets ◽  
Anti Inflammation

Nobiletin (NOB) chemically known as 5,6,7,8,3′,4′-hexamethoxyflavone is a dietary polymethoxylated flavonoid found inCitrusfruits. Recent evidences show that NOB is a multifunctional pharmaceutical agent. The various pharmacological activities of NOB include neuroprotection, cardiovascular protection, antimetabolic disorder, anticancer, anti-inflammation, and antioxidation. These events may be underpinned by modulation of signaling cascades, including PKA/ERK/MEK/CREB, NF-κB, MAPK, Ca2+/CaMKII, PI3K/Akt1/2, HIF-1α, and TGFβsignaling pathways. The metabolites may exhibit stronger beneficial effects than NOB on diseases pathogenesis. The biological activities of NOB have been clarified on many systems. This review aims to discuss the pharmacological effects of NOB with specific mechanisms of actions. NOB may become a promising candidate for potential drug development. However, further investigations of NOB on specific intracellular targets and clinical trials are still needed, especially forin vivomedical applications.

scholarly journals An Updated Review on Synthesis and Biological Activities of Thiosemicarbazide Analogs

2021 ◽  
Vol 33 (9) ◽  
pp. 1957-1975
Author(s):  
Akhalesh Kumar ◽  
Rakhi Mishra ◽  
Avijit Mazumder ◽  
Rupa Mazumder ◽  
Arun Kumar
Keyword(s):  
Drug Discovery ◽  
Review Paper ◽  
Biological Activities ◽  
Reaction Scheme ◽  
Review Article ◽  
Pharmacological Activities ◽  
Thiosemicarbazide Derivative ◽  
Synthetic Methodologies ◽  
Thiosemicarbazide Derivatives

This review paper focuses on the different synthetic methodologies that researchers have adopted to synthesize various thiosemicarbazide derivatives with different biological activities of synthesized compounds in the last 20 years. Most of the investigations available in the literature are directed to the biological activities of thiosemicarbazide derivatives with less discussion on its synthetic schemes. This review article presents various reaction scheme, which has been adopted for thiosemicarbazide derivative synthesis along with the reported pharmacological activities of synthesized analogs. The available literature in the article aims to encourage more studies on the synthesis of thiosemicarbazide derivatives, which will help for drug discovery having thiosemicarbazide nucleus.

scholarly journals Impact of Seaweed-derived Xanthophyll Carotenoid on Obesity Management: Overview of the Last Decade

2020 ◽  
Author(s):  
Oyindamola Vivian Ojulari ◽  
Seul Gi Lee ◽  
Ju-Ock Nam
Keyword(s):  
Biological Activities ◽  
Antioxidant Properties ◽  
In Vivo Studies ◽  
Health Issues ◽  
Major Health ◽  
Chemical Treatments ◽  
Anti Oxidant ◽  
Published Research

Present-day lifestyles associated with high calorie-fat intake and accumulation, as well as energy imbalance, has led to the development of obesity and its comorbidities, which have emerged as some of the major health issues globally. To combat the disease, many studies have reported the anti-obesity effects of natural compounds in foods, with some advantages over chemical treatments. Carotenoids, particularly xanthophyll derived from seaweeds, have attracted the attention of researchers due to their notable biological activities, which are associated mainly with their antioxidant properties. Their involvement in oxidative stress modulation, regulation of major transcription factors and enzymes as well as their antagonistic effects on various obesity parameters have been examined in both in-vitro and in-vivo studies. The present review is a collation of published research over the last decade on the anti-oxidant properties of seaweed xanthophyll carotenoids, with a focus on fucoxanthin and astaxanthin and their mechanisms of action in obesity prevention and treatment.

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