Anti-ulcer and analgesic activity of Annona reticulata leaves extract.

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Journal name: World Journal of Pharmaceutical Research
Original article title: Evaluation of anti-ulcer and analgesic activity of methanolic extract of leaves of annona reticulata linn.
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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Original source:

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Author:

Kashikant Yadav, Nagarathna P.K.M., Diana Moria Martin Lou andGyamcho Tshering Bhutia


World Journal of Pharmaceutical Research:

(An ISO 9001:2015 Certified International Journal)

Full text available for: Evaluation of anti-ulcer and analgesic activity of methanolic extract of leaves of annona reticulata linn.

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

Doi: 10.20959/wjpr20196-14841


Download the PDF file of the original publication


Summary of article contents:

Introduction

The study evaluates the anti-ulcer and analgesic activities of the methanolic extract of Annona reticulata leaves (MEAR) on albino rats. This plant, commonly referred to as Bullock’s heart or Custard apple, is known for its numerous medicinal properties, including anthelmintic, analgesic, and anti-inflammatory effects. Peptic ulcers, affecting millions worldwide, highlight the need for effective treatments that are safe and affordable. The research aimed to determine the potential benefits of MEAR in treating gastric ulcers and pain relief through various experimental models.

Evaluation of Anti-Ulcer Activity

The study investigated MEAR's anti-ulcer properties using different induced ulcer models: ethanol, indomethacin, stress, and pylorus ligation in rats. The animals were divided into control, standard, and test groups. The results showed a significant reduction in the ulcer index and an increase in ulcer protection percentage at both 100 mg/kg and 200 mg/kg doses. Notably, the higher dose (200 mg/kg) displayed more potent gastroprotective effects, successfully lowering gastric juice volume, increasing pH, and reducing free and total acidity. These findings suggest that the phytoconstituents present in the extract contribute to its cytoprotective, antisecretory, and antioxidant properties, making it a promising candidate for anti-ulcer therapy.

Analgesic Effects of MEAR

In addition to anti-ulcer activity, the analgesic effects of MEAR were assessed using the tail flick and hot plate methods. Both methods indicated significant pain relief at doses of 100 mg/kg and 200 mg/kg. MEAR-treated rats exhibited increased reaction times to thermal pain stimuli, with the higher dose showcasing greater efficacy than the standard analgesic, diclofenac. This suggests that MEAR’s analgesic mechanism may involve central nervous system pathways, which is crucial as it may provide a safer alternative to conventional pain relief medications that often have adverse effects.

Phytochemical Analysis

Phytochemical assays revealed the presence of various bioactive compounds in MEAR, including steroids, alkaloids, flavonoids, and tannins. These phytochemicals are believed to play a significant role in the extract's therapeutic activities, supporting its traditional use in folk medicine. The safety profile of MEAR was also validated through acute toxicity studies, which indicated no mortality at doses up to 2000 mg/kg. This reinforces the potential of Annona reticulata leaves as a non-toxic and effective remedy for ulcer and pain management.

Conclusion

In conclusion, the study demonstrated that the methanolic extract of Annona reticulata possesses significant anti-ulcer and analgesic properties in a dose-dependent manner. The findings underline the potential of this traditional medicinal plant as an alternative treatment option for peptic ulcers and pain relief, advocating for further research into the isolation and characterization of the bioactive compounds responsible for these therapeutic activities. This research supports the growing interest in phytotherapy as a safe and effective means of addressing gastrointestinal disorders and pain management.

FAQ section (important questions/answers):

What is the primary focus of this study on Annona reticulata?

This study evaluates the antiulcer and analgesic activities of the methanolic extract of Annona reticulata leaves on albino rats.

What types of ulcers were induced in the study?

The study induced ulcers using ethanol, indomethacin, stress, and pylorus ligation models to evaluate the antiulcer activity.

What significant findings did the study report regarding the extract?

The methanolic extract showed significant antiulcer activity and analgesic effects in a dose-dependent manner at concentrations of 100 mg/kg and 200 mg/kg.

Which methods were used to measure analgesic activity?

The analgesic activity was measured using the tail flick and hot plate methods, demonstrating the extract's central nervous system effects.

How does Annona reticulata extract compare to standard drugs?

The extract demonstrated stronger analgesic effects compared to the conventional drug diclofenac, particularly in the hot plate method.

What safety assessment was performed for the extract?

An acute toxicity study found that the methanolic extract is safe up to 2000 mg/kg, indicating a potential for safe therapeutic use.

Glossary definitions and references:

Scientific and Ayurvedic Glossary list for “Anti-ulcer and analgesic activity of Annona reticulata leaves extract.”. 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) Ulcer:
Ulcers, particularly peptic ulcers, are the primary focus of the research, causing considerable morbidity worldwide. Understanding their prevalence and underlying mechanisms is essential for developing effective treatment options. The study's findings on the methanolic extract's impact on ulcers may lead to novel therapeutic strategies.

2) Animal:
The term animals in the research indicates the use of live subjects, specifically Wistar albino rats, for testing the extract's effects. Using animals allows researchers to study the biological responses to treatments in a controlled environment, which is essential for understanding drug action before human trials.

3) Activity:
Activity refers to the pharmacological effects observed in the study, specifically the antiulcer and analgesic properties of the methanolic extract from Annona reticulata. These activities indicate how well the extract performs in alleviating ulcers and reducing pain, underscoring the medicinal potential of the plant.

4) Drug:
Drugs encompass both synthetic and natural substances used to modify physiological functions. The study contrasts conventional analgesics and antiulcer medications with those derived from herbal extracts, emphasizing the potential role of natural compounds in creating safer alternatives to treat gastrointestinal disorders.

5) Water:
Water is used in various methods throughout the research to prepare drug dosages or facilitate testing procedures. The extraction methods often require water as a solvent or diluent. Additionally, controlling hydration in animal studies is essential for their wellbeing and consistency in experimental results.

6) Study (Studying):
The study entails a comprehensive exploration of the antiulcer and analgesic effects of Annona reticulata extracts. It follows a well-organized methodology, encompassing various experimental procedures and analyses to assess efficacy and safety, ultimately contributing to the field of pharmacognosy and natural medicine.

7) Table:
Table refers to the data presentation format where results, such as ulcer indices and protective percentages, are summarized for easy comparison. Tables enhance clarity in conveying experimental outcomes, facilitating easier understanding and assessment of treatment efficacy among different groups of test subjects.

8) Pain:
Pain is a crucial element in understanding the analgesic properties of the extract. It represents a significant symptom managed by the researched drugs. The study evaluates the effectiveness of Annona reticulata in relieving pain, potentially offering insights into herbal alternatives to conventional pain relievers.

9) Toxicity:
Toxicity refers to the adverse effects that substances can cause at certain doses. In this study, acute toxicity tests were performed to ensure the safety of the methanolic extract of Annona reticulata, establishing its viability for therapeutic use without causing harm to the subjects.

10) Observation:
Observation is a critical component of experimental research. It involves monitoring the responses of the subjects to the administered treatments. Detailed observations help in gathering essential data that supports conclusions regarding the effectiveness and safety of the extract in alleviating ulcers and pain.

11) Flavonoid:
Flavonoids are a group of phytochemicals with well-known health benefits, often exhibiting antioxidant properties. The presence of flavonoids in the methanolic extract of Annona reticulata may contribute significantly to its therapeutic effects, including its potential to protect gastric mucosa from damage.

12) Blood:
Blood plays a fundamental role in systemic circulation, delivering nutrients and removing waste. In the context of the study, assessing changes in blood properties can indicate the physiological impact of treatments, particularly in relation to gastrointestinal health and potential systemic side effects.

13) Phytochemical:
Phytochemicals are bioactive compounds derived from plants, possessing various health benefits. The study identifies several phytochemicals present in Annona reticulata, which may be responsible for the extract's beneficial antiulcer and analgesic properties, promoting the exploration of herbal remedies in modern medicine.

14) Karnataka:
Karnataka is a state in India where the study was conducted at the Karnataka College of Pharmacy. The geographical location is relevant as it suggests the local usage of Annona reticulata in traditional medicine and the potential for discovering unique phytochemical properties in regional plant varieties.

15) India:
India is the country where the research takes place and has a rich heritage of using medicinal plants in traditional practices. Its diverse flora offers numerous opportunities for scientific exploration of herbal remedies, paving the way for developing new treatments aligned with age-old practices.

16) Pharmacology:
Pharmacology is the branch of science dedicated to studying drug action and interactions with biological systems. This study falls under pharmacology by systematically assessing the effects of Annona reticulata extracts on ulcers and pain, contributing to the field with valuable insights about herbal pharmacotherapy.

17) Medicine:
Medicine refers to the science of diagnosing, treating, and preventing diseases. This study underscores the relevance of exploring plant-based medicine as a means to develop new therapeutic options, highlighting the importance of integrating traditional knowledge with modern scientific inquiry in health care.

18) Surface:
Surface refers to the gastric mucosa, which is critical in the context of ulcers. The study investigates how the extract protects this surface from damage caused by excessive gastric acid and other irritants, emphasizing the extract's gastroprotective qualities through various mechanisms.

19) Food:
Food is essential for energy and health but can exacerbate gastrointestinal conditions like ulcers. The interaction between food and medications, as well as its role in managing ulcer symptoms, is likely a consideration in the study which aims to provide holistic treatment options for affected individuals.

20) Bullock:
Bullock refers to a common name used for Annona reticulata, also known as Bullock's heart or custard apple. This name emphasizes the cultural and regional significance of the plant, often linked to traditional healing practices and potential therapeutic benefits as demonstrated in the studies.

21) Disease:
Diseases encompass a range of health conditions that require effective management. The study focuses on diseases like peptic ulcers and their implications for public health, demonstrating the relevance of herbal research in contributing to the treatment of widespread health issues.

22) Powder:
Powder refers to the processed form of the plant material used to create the methanolic extract. The preparation of the plant into powder is a crucial step in the extraction process, ensuring maximum yield of phytochemicals, which contributes to the efficacy of the final extract in testing.

23) Cage:
A cage serves the same purpose as cages, providing a secure environment for laboratory animals during experiments. Consistent and humane treatment of animals in cages is critical for ethical research practices and influences the results and reproducibility of scientific findings.

24) Mast:
Mast refers to mast cells, which are involved in the immune response and can play a role in inflammation and pain perception. Understanding the function of mast cells in relation to the analgesic effects observed in the study underlines the biological complexity of pain management.

25) Worm:
Worms highlight the traditional medicinal uses of Annona reticulata in treating parasitic infections. By referencing worm infestations, the study signifies the broader therapeutic applications of the plant beyond ulcers and pain relief, showcasing its potential as a multifaceted herbal remedy.

26) Pharmacological:
Pharmacological relates to the study of how drugs operate within biological systems. This term encapsulates the primary focus of the research, which aims to evaluate the pharmacological properties of plant extracts, especially their antiulcer and analgesic activities, contributing to potential new treatments.

27) Discussion:
Discussion is a critical section in research that interprets results and provides insight into their implications. It offers a platform to connect findings with existing literature, explore potential mechanisms behind observed effects, and suggest future research directions based on the study's outcomes.

28) Developing:
Developing refers to the process of creating new treatments or therapies. In this study, it pertains to the exploration of Annona reticulata for potential use in new antiulcer or analgesic drugs, emphasizing the need for innovative approaches in addressing global health challenges.

29) Accumulation (Accumulating, Accumulate):
Accumulate refers to the build-up of substances, such as reactive oxygen species in the context of ulcers. The term underscores the importance of managing oxidative stress in ulcerogenesis, and the study examines how Annona reticulata may help prevent or reduce this accumulation.

30) Irritation:
Irritation is a key factor in ulcer formation, occurring due to imbalances in protective and harmful factors in the stomach. Understanding the role of irritation aids in evaluating how the studied extract can alleviate symptoms and promote mucosal healing in gastric ulcers.

31) Substance:
Substance refers to the active components present in the methanolic extract of Annona reticulata. Identifying and characterizing these substances is essential for understanding their therapeutic effects and potential applications in medicine, particularly for ulcers and pain relief.

32) Container:
A container is used for storing the powdered plant material prior to extraction. Proper storage is critical to maintain the stability and efficacy of plant materials, ensuring that the extraction processes yield potent active constituents for testing in pharmacological studies.

33) Tirupati (Thirupati, Tiruppati):
Tirupati is a city in India where the plant material was collected. The local biodiversity of the region may contribute to the specific phytochemical profile of Annona reticulata, highlighting the significance of geographical origin in herbal research and the discovery of unique medicinal properties.

34) Relative:
Relative is a term that can refer to the comparative assessment of results, such as the effectiveness of the extract compared to standard medications. Understanding relative efficacy is essential for determining the potential impact of new treatments in the clinical landscape.

35) Epilepsy:
Epilepsy points to one of the traditional uses of Annona reticulata. By acknowledging its applications for epilepsy, the study suggests the plant's historical role in managing neurological conditions, reflecting on the breadth of therapeutic potential for traditional herbal remedies.

36) Incision:
Incision refers to the surgical procedure performed on the rats to access the stomach during the experimental phase. It is critical for assessing the effects of treatments on the internal structures and functions, allowing researchers to gather data on ulceration and healing.

37) Mineral:
Mineral, in this context, synonymously pertains to the essential nutrients derived from the plant that support health. The research highlights the significance of minerals present in Annona reticulata, linking suitable nutrient composition to potential therapeutic effects.

38) Raising:
Raising refers to the increase in pain threshold or sensory perception in pain management. The research explores how the extract raises pain thresholds in animal models, offering insights into potential underlying mechanisms of analgesic activity through natural products.

39) Species:
Species indicates the different forms of organisms within the genus Annona. Understanding the variety of species is crucial in herbal studies as each may have distinct properties and effects, influencing the selection of species for specific pharmacological research.

40) Forest:
Forest refers to the natural habitat where the plant Annona reticulata may be found. Understanding its ecological background can provide insights into its traditional uses and applications in herbal medicine, emphasizing the plant's role in biodiversity and conservation efforts.

41) Family:
Family indicates the classification group in botanical taxonomy to which Annona reticulata belongs (Annonaceae). Recognizing the family is important for understanding the characteristics shared among related plants, which may lead to discovering similar beneficial properties in other species.

42) Insect:
Insect points to pests that are often targeted by plant extracts in traditional medicine. In the research, it underscores the greater utility of Annona reticulata beyond therapeutic applications for humans, highlighting its potential in controlling insect populations and agricultural pests.

43) Glass:
Glass refers to the materials used in laboratory equipment, such as glass containers for experimental setups. Proper use of glass apparatus is essential in ensuring accuracy in experiments, maintaining hygiene, and preventing contamination during sample preparation and analysis.

44) Fever:
Fever highlights another potential traditional use of Annona reticulata in herbal medicine. The ability of the plant to manage fever suggests its antipyretic properties and indicates the spectrum of illnesses it may help address within a holistic treatment framework.

45) Rich (Rch):
Rich describes the abundance of beneficial compounds found in Annona reticulata. This term emphasizes the significant diversity of phytochemicals that contribute to the plant's therapeutic potential, suggesting its prominence as a valuable source of natural medicines.

46) Hand:
Hand could refer to the process of manual preparation and handling of plant materials within the context of the study. This aspect underlines the importance of careful human intervention in extracting and utilizing the medicinal properties of herbs for practical application.

47) Soil:
Soil refers to the medium where Annona reticulata grows, influencing its nutrient uptake and phytochemical profile. Analyzing soil composition and characteristics can provide valuable insights into how environmental factors affect the plant's growth and medicinal efficacy.

Other Science Concepts:

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Discover the significance of concepts within the article: ‘Anti-ulcer and analgesic activity of Annona reticulata leaves extract.’. Further sources in the context of Science might help you critically compare this page with similair documents:

Gastric juice, Pain relief, Gastrointestinal Tract, Phytochemical analysis, Acute toxicity, Reactive oxygen species, Analgesic activity, Acute toxicity study, Ulcer index, Non steroidal anti inflammatory drug, Dose-dependent manner, Anti-ulcer activity, Antioxidant potential, Methanolic extract, Helicobacter pylori.

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