A pharmacognostic and pharmacological review

amaranthus spinosus

| Posted in: Science

Journal name: World Journal of Pharmaceutical Research
Original article title: A pharmacognostic and pharmacological review
The WJPR includes peer-reviewed publications such as scientific research papers, reports, review articles, company news, thesis reports and case studies in areas of Biology, Pharmaceutical industries and Chemical technology while incorporating ancient fields of knowledge such combining Ayurveda with scientific data.
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Subtitle: amaranthus spinosus

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Author:

Rajendra M Kawade , Nitin B. Ghiware, Shrinivas K. Sarje, Sudhir M. Vadvalkar


World Journal of Pharmaceutical Research:

(An ISO 9001:2015 Certified International Journal)

Full text available for: A pharmacognostic and pharmacological review

Source type: An International Peer Reviewed Journal for Pharmaceutical and Medical and Scientific Research

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Summary of article contents:

Introduction

Amaranthus spinosus, commonly known as Pigweed, is an annual, monoecious herb widely cultivated in tropical countries and parts of India and Sri Lanka. This plant has been extensively used in traditional medicine for its diverse pharmacological properties, including treatments for diabetes, internal bleeding, and inflammatory conditions. The present review highlights various pharmacognostic and pharmacological studies on Amaranthus spinosus, aiming to unveil its potential scientific and clinical applications.

Anti-inflammatory Activity

The anti-inflammatory properties of the methanolic extract of Amaranthus spinosus leaves were investigated in several animal models. The extract significantly inhibited carrageenan-induced rat paw edema and reduced acetic acid-induced vascular permeability. When examined in a cotton pellet granuloma test, it was evident that the plant extract effectively reduced inflammation. However, it also caused severe gastric erosion at higher doses, likely due to its ability to inhibit prostaglandin synthesis, suggesting a dual role in treating inflammation associated with pain.

Hepatoprotective Activity

The hepatoprotective and antioxidant activities of 50% ethanolic extract of Amaranthus spinosus were evaluated against carbon tetrachloride-induced liver damage in rats. The extract significantly restored elevated serum enzyme levels toward normal and exhibited dose-dependent hepatoprotective effects. Histopathological examination of liver sections supported these findings, indicating that the plant's flavonoid and phenolic content might be responsible for its protective effects on the liver.

Antifertility Activity

The antifertility activity of Amaranthus spinosus roots was tested on pregnant rats using both aqueous and ethanolic extracts. The extracts, particularly in higher doses of the ethanolic form, significantly interrupted pregnancy when administered during early gestation. These findings suggest that the plant possesses potent antifertility properties, making it a subject of interest for developing natural contraceptives.

Conclusion

Amaranthus spinosus is a promising medicinal plant with diverse pharmacological activities including anti-inflammatory, hepatoprotective, and antifertility properties. Extensive phytochemical analysis reveals that it contains various bioactive compounds such as alkaloids, flavonoids, and phenolics. While traditional uses of the plant are supported by scientific evidence, further research is necessary to standardize its extracts and investigate potential toxicities to harness its full therapeutic potential.

FAQ section (important questions/answers):

What is Amaranthus spinosus used for traditionally?

Traditionally, Amaranthus spinosus is used to treat diabetes, diarrhea, toothaches, internal bleeding, and excessive menstruation, among other ailments. It is also employed for treating gonorrhea, as an emmenagogue, and for inducing abortion in some cultures.

What are the antioxidant properties of Amaranthus spinosus?

Amaranthus spinosus exhibits significant antioxidant properties due to components like betalain pigments. Studies have shown strong free radical scavenging capabilities, making it effective in combating air pollution-related oxidative stress.

Does Amaranthus spinosus have anti-inflammatory effects?

Yes, the methanolic extract of Amaranthus spinosus leaves has shown significant anti-inflammatory activity in animal models, including reducing carrageenan-induced paw edema and inhibiting acetic acid-induced vascular permeability.

Is Amaranthus spinosus effective against malaria?

Yes, studies indicate that aqueous and ethanolic extracts of Amaranthus spinosus bark exhibit dose-dependent antimalarial activity in mice inoculated with Plasmodium berghei, showcasing significant suppression of parasitic activity.

What toxicity concerns are there with Amaranthus spinosus?

Amaranthus spinosus has a relatively low toxicity in general, with an LD50 value of 1450 mg/kg. However, it has been implicated in spontaneous cattle poisoning during droughts, causing renal failure and other clinical symptoms.

What are the immuno-modulatory properties?

The aqueous extract of Amaranthus spinosus leaves stimulates splenocyte proliferation and B lymphocyte activation, indicating effective immuno-modulatory properties that may enhance immune responses.

Glossary definitions and references:

Scientific and Ayurvedic Glossary list for “A pharmacognostic and pharmacological review”. This list explains important keywords that occur in this article and links it to the glossary for a better understanding of that concept in the context of Ayurveda and other topics.

1) Activity:
Activity in this context refers to the various pharmacological actions exhibited by Amaranthus spinosus, such as its antiprotozoal, anti-inflammatory, antioxidant, antimalarial, and analgesic properties. Each activity highlights a specific beneficial interaction the plant extract has on biological systems, studied through different experimental models.

2) Water:
Water is significant as a solvent used to prepare extracts from Amaranthus spinosus for various pharmacological studies. For example, water extracts are used in assessing immuno-modulatory properties, antioxidant activities, and other therapeutic potentials, illustrating the importance of water in its pharmacognostic preparation.

3) Medicine:
Medicine is pivotal here as Amaranthus spinosus is traditionally used in various forms to treat multiple ailments including diabetes, inflammation, malaria, and as a diuretic. Its ethnopharmacologic applications underline its importance in folk medicine across different cultures and regions.

4) Blood:
Blood is mentioned in studies evaluating the effects of Amaranthus spinosus on haematological parameters such as red blood cell (RBC) and white blood cell (WBC) counts, packed cell volume (PCV), and haemoglobin (Hb) concentration, showcasing its potential in affecting blood-related health conditions.

5) Post:
Post refers to various post-treatment evaluations in the experimental studies. For instance, post-inflammation and post-diabetes assessments help in measuring the efficacy of Amaranthus spinosus extracts in controlling these health conditions, thus confirming their therapeutic actions.

6) Drug:
Drug refers to Amaranthus spinosus being likened to, or compared with, conventional drugs in the studies. For example, chloroquine was used as a reference drug in antimalarial assays to benchmark the efficacy of Amaranthus spinosus bark extract, reinforcing its potential as an alternative or complementary medicine.

7) Pharmacology:
Pharmacology is the central theme of the paper, emphasizing the systematic study of Amaranthus spinosus' bioactive compounds and their effects on biological systems. The term encompasses the research on its pharmacognostic profile and various pharmacological activities like anti-inflammatory and antidiabetic properties.

8) Inflammation:
Inflammation is a significant concern examined in the studies, where Amaranthus spinosus extracts were tested for their anti-inflammatory properties. The research findings underscore the plant's potential in reducing inflammation, a common symptom in many chronic diseases, making it a valuable therapeutic candidate.

9) Flavonoid:
Flavonoid refers to a class of phytoconstituents present in Amaranthus spinosus. These compounds, such as quercetin and kaempferol glycosides, are noted for their strong antioxidant and anti-inflammatory properties, playing a crucial role in the plant's pharmacological activities.

10) Edema (Oedema):
Edema is cited in both the toxicological effects (such as subcutaneous oedema in animals) and therapeutic applications of Amaranthus spinosus. This duality underscores its importance in studying both potential adverse effects and health benefits.

11) Toxicity:
Toxicity refers to the adverse effects observed in extensive toxicity studies of Amaranthus spinosus. These studies are crucial for establishing safe dosage levels and understanding potential side effects, such as renal failure in animals, ensuring its medicinal use is both effective and safe.

12) Swelling:
Swelling is a symptom targeted by the therapeutic use of Amaranthus spinosus. The plant's application in reducing swelling around the stomach and its diuretic properties demonstrate its role in managing fluid accumulation and inflammatory conditions.

13) Cancer:
Cancer is relevant here as some constituents of Amaranthus spinosus, like betalains, have been cited for their anticancer properties. The plant's potential in combating cancerous cells positions it as a candidate for further oncological research and potential therapeutic use.

14) Snake poison (Snake venom):
Snake poison refers to traditional uses of Amaranthus spinosus as an antidote for snake bites. This ethnomedicinal application highlights the plant's potential in neutralizing toxins and underscores its historical significance and therapeutic versatility.

15) Purification:
Purification is mentioned in the context of obtaining specific active compounds from Amaranthus spinosus, such as the immuno-stimulatory protein GF1. This process is crucial for isolating and identifying bioactive molecules, facilitating detailed pharmacological studies and therapeutic application development.

16) Science (Scientific):
Scientific refers to the rigorous, evidence-based approach employed in the studies of Amaranthus spinosus. The research integrates traditional knowledge with modern scientific methods to validate and understand the plant's medicinal properties and pharmacological effects.

17) Ayurveda (Āyurveda, Ayus-veda):
Ayurveda is the traditional Indian system of medicine that utilizes Amaranthus spinosus for treating liver diseases and other conditions. This highlights the plant's longstanding role in herbal medicine and its significance in cultural and medicinal practices in South Asia.

18) Lakshmi (Lakṣmī):
Lakshmi likely refers to one of the researchers or authors associated with the studies on Amaranthus spinosus. The reference underscores the collaborative efforts and contributions of various scientists in the pharmacological research of this plant.

19) Allergy:
Allergy is significant as the levels of immunoglobulin E (IgE) are an indicator of allergic responses. The research into Amaranthus spinosus includes studying its immunomodulatory effects, which could have implications for managing allergic conditions through modulation of immune responses.

20) Castor:
Castor oil is used in pharmacological studies as an inducer of diarrhea to test the anti-diarrheal efficacy of Amaranthus spinosus extracts. This establishes baselines for evaluating the plant's therapeutic effects on gastrointestinal conditions.

21) Paniya (Paṇiya, Pānīya, Pāṇiyā):
Paniya refers to one of the tribes in Kerala, India, that traditionally use Amaranthus spinosus. This highlights the ethnobotanical relevance and the importance of preserving indigenous knowledge regarding the medicinal uses of local flora.

22) Sharman (Śarma, Sarmā, Sarma, Sharma, Śarman):
Sharma likely refers to a researcher or author cited in the document. Their contributions to studying Amaranthus spinosus and related pharmacological phenomena underscore the collaborative and cumulative nature of scientific research.

23) Hema (Hemā, Heman):
Hema likely refers to a researcher or author contributing to the studies of Amaranthus spinosus. This underscores the role of individual researchers in advancing the understanding of this medicinal plant's properties and applications.

24) Diet:
Diet is relevant in the context of the nutritional analysis of Amaranthus spinosus, which is consumed as a vegetable. The plant's high nutritive value, rich in essential amino acids, vitamins, and minerals, demonstrates its dual role as both food and medicine.

25) Hand:
Hand is mentioned in various contexts, likely metaphorically indicating the human intervention involved in cultivating, harvesting, and preparing Amaranthus spinosus for medicinal and nutritional uses, highlighting the plant's role in agriculture and folk medicine.

26) Worm:
Worm is relevant in the context of anthelmintic activity studies. Amaranthus spinosus extracts were tested for their effectiveness in paralyzing and killing worms, showcasing its potential in treating parasitic worm infestations.

27) Salt (Salty):
Salt is mentioned in traditional uses of Amaranthus spinosus. For example, leaves boiled without salt were traditionally consumed to cure jaundice, illustrating seasonal and regional variations in its medicinal preparations and uses.

28) Wolf:
Wolf refers to the author, P.L. Wolf, who is cited in the context of biochemical diagnosis of liver diseases. The reference underscores the importance of biochemical studies in validating the hepatoprotective properties of Amaranthus spinosus.

Other Science Concepts:

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Discover the significance of concepts within the article: ‘A pharmacognostic and pharmacological review’. Further sources in the context of Science might help you critically compare this page with similair documents:

Toxicity, Medicinal preparation, Large intestine, Traditional medicine, Decoction of the root, Clinical study, Anti-inflammatory activity, Nutritional value, Antioxidant properties, Pharmacognostic study, Anti hyperlipidemic, Hepatoprotective activity, Antiprotozoal activity, Hepatoprotective properties, Ethnopharmacology, Antioxidant activities, Anthelmintic activity, Antifertility activity, Active constituent, Renal failure, Analgesic properties, Anthelminthic activity, Emmenagogue, Clinical sign, Inflammatory reaction, Acute Poisoning, Anti diabetic, Mucosal lesion, Anti-malarial activity, Immuno-modulatory properties, Anti diabetic effect, Anti-hyperlipidemic effect, Hyperkalemia, High nutritive value, Coagulative necrosis.

Concepts being referred in other categories, contexts and sources.

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