Effects of Murraya koenigii on neuropathic pain in rats.

| Posted in: Science

Journal name: World Journal of Pharmaceutical Research
Original article title: Ameliorative effects of murraya koenigii in chronic constriction injury of sciatic nerve induced neuropathic pain in rats
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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Author:

Deepika Saini, Tapan Behl, Ishneet Kaur, Meenu Nagpal, Heena Goel,Rajesh K. Pandey


World Journal of Pharmaceutical Research:

(An ISO 9001:2015 Certified International Journal)

Full text available for: Ameliorative effects of murraya koenigii in chronic constriction injury of sciatic nerve induced neuropathic pain in rats

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


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Summary of article contents:

Introduction

Neuropathic pain is a complex condition resulting from lesions or dysfunction in the nervous system, characterized by abnormal sensory symptoms such as allodynia and hyperalgesia. This type of pain can arise from various diseases and injuries, and it is often resistant to standard analgesic treatments. As existing therapies like gabapentin and tricyclic antidepressants show limited efficacy and can produce significant side effects, alternative treatments are being explored. One such alternative is Murraya koenigii, a plant known for its traditional medicinal uses and potential neuroprotective properties.

Ameliorative Effects of Murraya koenigii on Neuropathic Pain

Studies indicate that Murraya koenigii possesses antioxidant, anti-inflammatory, and neuroprotective properties that might contribute to alleviating peripheral neuropathic pain. The current research utilized the chronic constriction injury (CCI) model in rats to analyze the efficacy of Murraya koenigii leaf extract on neuropathic pain symptoms. Results showed that oral administration of the extract significantly reduced thermal hyperalgesia and cold allodynia in a dose-dependent manner. Higher doses (200 mg/kg and 400 mg/kg) exhibited more substantial effects, indicating the extract's potential role in managing neuropathic pain.

Impact on Biochemical Parameters

The study measured various biochemical markers in the sciatic nerve, including lipid peroxidation (assessed through malondialdehyde levels), reduced glutathione levels, and calcium concentrations. Chronic constriction injury resulted in elevated lipid peroxidation and reduced antioxidant levels, conditions indicative of oxidative stress. Administration of Murraya koenigii extract significantly lowered the levels of malondialdehyde, restored glutathione levels, and decreased elevated calcium levels. These findings suggest the extract may mitigate the oxidative stress associated with neuropathic pain.

Comparison with Pregabalin

Pregabalin was used as a positive control in this study, known for its effectiveness in treating neuropathic pain. It demonstrated a significant reduction in hyperalgesia and allodynia similar to that seen with Murraya koenigii. This comparison underscores the need for alternative therapies like Murraya koenigii, which may offer similar benefits while potentially circumventing the side effects associated with synthetic medications.

Conclusion

The research establishes that Murraya koenigii leaf extract effectively alleviates neuropathic pain induced by chronic constriction injury in rats. Its ability to improve behavioral outcomes and normalize biochemical disturbances related to oxidative stress highlights the extract's therapeutic potential in managing peripheral neuropathic pain. Given the limitations of current pharmacological treatments, Murraya koenigii may offer a promising alternative for pain relief.

FAQ section (important questions/answers):

What is neuropathic pain and its characteristics?

Neuropathic pain is caused by damage or dysfunction in the nervous system. It is often characterized by sensations like allodynia (pain from non-painful stimuli) and hyperalgesia (increased pain response), leading to chronic and severe pain.

What are the limitations of current neuropathic pain treatments?

Many first-line drugs like gabapentin and pregabalin are not fully effective for all patients. They can also have severe side effects, prompting the need for alternative treatments and research into the efficacy of herbal remedies.

How is Murraya koenigii related to neuropathic pain treatment?

Murraya koenigii, or curry-leaf tree, possesses anti-inflammatory and antioxidant properties. The study investigates its potential to alleviate neuropathic pain symptoms through its effects on oxidative stress and inflammation.

What experimental model was used to study neuropathic pain?

The chronic constriction injury (CCI) model of the sciatic nerve was employed. This method mimics human neuropathic pain conditions and allows for assessment of associated alterations in sensory thresholds and biochemical markers.

What were the effects of Murraya koenigii on pain symptoms?

Murraya koenigii significantly reduced thermal hyperalgesia and cold allodynia in rats after CCI. The effects were dose-dependent, showing improved nociceptive thresholds and biochemical markers, indicating potential therapeutic benefits.

What biochemical changes were observed in CCI-induced rats?

CCI induced increases in lipid peroxidation markers, decreased levels of reduced glutathione, and elevated calcium levels. Murraya koenigii administration helped restore GSH levels and reduce lipid peroxidation, suggesting neuroprotective effects.

Glossary definitions and references:

Scientific and Ayurvedic Glossary list for “Effects of Murraya koenigii on neuropathic pain in rats.”. 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) Pain (Paiṇ):
Pain is the unpleasant sensory and emotional experience often associated with tissue damage. It serves as a protective mechanism for the body, initiating reflexes to manage harmful stimuli. The study addresses neuropathic pain as a complex condition resulting from nerve dysfunction, demonstrating its relevance in understanding chronic conditions.

2) Animal:
Animal refers to the use of laboratory rats in this study, a common practice in biomedical research. The chronic constriction injury model employs rats to simulate neuropathic pain, providing insights into the mechanisms of pain and potential treatments. Animal studies are crucial for preliminary efficacy and safety evaluations.

3) Sam (Sām, Sham, Śam):
Sham refers to control procedures where animals undergo surgery without inducing actual treatment effects, serving as a baseline for comparison. In this study, sham-operated rats help in understanding the physiological and behavioral changes resulting from actual nerve injury versus those due to surgical stress or recovery.

4) Study (Studying):
The study investigates the effects of Murraya koenigii on neuropathic pain induced by chronic constriction injury in rats. It contributes valuable data to the scientific understanding of potential alternative treatments for conditions that currently have limited effective therapies, emphasizing the need for innovative approaches in pain management.

5) India:
India is significant as the geographic origin of Murraya koenigii, a plant widely used in traditional medicine. The study reflects India's rich herbal medicinal knowledge while also illustrating the global interest in exploring natural substances for therapeutic purposes, particularly in treating neuropathic pain.

6) Hind (Hiṇḍ):
Hind refers to the portion of the rats used in the study, specifically their hind paws, which were examined for effects of thermal hyperalgesia and cold allodynia following nerve injury. This part of the anatomy is crucial for assessing sensory responses relevant to neuropathic pain models.

7) Drug:
Drug in this context refers to various substances administered to test their efficacy in alleviating neuropathic pain. The study compares traditional medications like pregabalin with herbal alternatives like Murraya koenigii, highlighting the exploration of both synthetic and natural drugs to improve neurological health.

8) Water:
Water is mentioned as part of the laboratory environment for rats, and also in the preparation of extracts for testing. Clean drinking water and controlled conditions are necessary for maintaining animal welfare and ensuring that experimental results are not confounded by environmental variables.

9) Medium:
Medium refers to the doses of Murraya koenigii used in the study, specifically 200 mg/kg. This term is significant as it delineates the dosage range tested for effectiveness in treating neuropathic pain, allowing the study to assess dose-response relationships critical in pharmacological research.

10) Delhi:
Delhi is relevant as the location of Vallabhbhai Patel Chest Institute, where part of the research is conducted. The institute's reputation supports the credibility of the study, and it highlights the contribution of Indian research institutions toward advancements in pharmaceutical and neurological studies.

11) Table:
Table in this context refers to the data summaries presented in the study, organizing results of biochemical and behavioral assessments. Tables facilitate the clear communication of complex data, helping readers to quickly understand the effects of treatments and the relationships between various experimental groups.

12) Blood:
Blood samples were collected during the study to evaluate biochemical parameters post-surgery. Analysis of blood is crucial in understanding systemic responses to nerve injury and treatment, offering insights into how therapies affect overall health, particularly in relation to oxidative stress and inflammatory markers.

13) Post:
Post refers to the timeframe after the chronic constriction injury surgery. The term is significant for describing the longitudinal assessment of pain symptoms and biochemical changes over several days, essential for understanding the progression of neuropathic pain and the efficacy of treatments.

14) Patel (Paṭel, Pāṭel):
Patel refers to Vallabhbhai Patel Chest Institute in Delhi. This institute is a critical center for medical research, contributing to the validation of findings in the study. The association with a respected institution enhances the credibility of the experimental approach and results.

15) Cage (Cāge):
Cage pertains to the housing conditions of the experimental rats. Proper caging is necessary to maintain controlled environments that minimize stress and variability, ensuring that behavioral tests accurately reflect the effects of interventions such as Murraya koenigii on neuropathic pain.

16) Pharmacology:
Pharmacology is the branch of medicine that studies drug action, relevant to this research due to its examination of Murraya koenigii as a potential treatment for neuropathic pain. Understanding pharmacodynamics and pharmacokinetics is essential for evaluating the effectiveness and safety of new medications.

17) Observation:
Observation denotes the systematic recording of changes in pain response and biochemical markers in the study. It is crucial for establishing evidence of the efficacy of Murraya koenigii, enabling researchers to draw conclusions regarding its potential therapeutic benefits in treating neuropathic pain.

18) Medicine:
Medicine symbolizes the overarching domain of healthcare that includes research into plant-based treatments. The study contributes to the field of alternative medicine, exploring how traditional remedies can be effective in managing contemporary health issues like chronic neuropathic pain.

19) Activity:
Activity refers to the biochemical and physiological actions assessed in response to treatments with Murraya koenigii and pregabalin. Understanding these activities is vital for illustrating how treatments modulate neuropathic pain mechanisms, contributing to the broader field of pharmacological research.

20) Disease:
Disease contextually refers to neuropathic pain resulting from nerve injury, as explored in the study. Characterizing the disease state is crucial for investigating possible treatments and understanding the complexities involved in pain mechanisms and the body's responses to injury.

21) Surface:
Surface in this study may relate to the hot plate used for assessing thermal hyperalgesia, which requires a controlled surface temperature. This detail is important as it underlines the methodological rigor necessary to produce reliable behavioral data in pain research.

22) Kangra (Kāṅgrā):
Kangra is relevant as the location where the Murraya koenigii leaves were sourced and authenticated. Geographic sourcing often influences the biochemical constituents of medicinal plants, making it vital for ensuring the quality and consistency of herbal treatments studied in pharmacological research.

23) Cancer:
Cancer is characterized as a pathological condition that can result in neuropathic pain as a secondary symptom. The acknowledgment of cancer alongside other diseases demonstrates the multifaceted impact of neuropathic pain and emphasizes the necessity for effective pain management strategies in oncology.

24) Ayus (Āyus, Ayush):
Ayush represents traditional Indian systems of medicine, including Ayurveda, which emphasizes herbal remedies for health. The study's exploration of Murraya koenigii aligns with Ayush principles, aiming to validate the efficacy of traditional medicines through scientific research, contributing to integrative healthcare.

25) Inflammation:
Inflammation refers to the body's response to injury that is often associated with pain conditions. The study examines the anti-inflammatory properties of Murraya koenigii in alleviating neuropathic pain, underscoring the importance of managing inflammation in therapeutic strategies for pain relief.

26) Discussion:
Discussion within the research often contextualizes findings, compares them with existing literature, and suggests implications for future research and clinical practices. This section is essential for interpreting data and emphasizing the significance of results in advancing knowledge of neuropathic pain treatments.

27) Developing:
Developing refers to the ongoing process of identifying effective treatments for neuropathic pain. The study contributes to the development of alternative medicinal strategies, especially in light of the limitations and side effects of current pharmaceutical options used to manage pain.

28) Substance:
Substance here refers to the various extracts and compounds tested for their effects on neuropathic pain. Understanding the specific substances involved, such as Murraya koenigii, is crucial in pharmacological research to determine their therapeutic efficacy and safety profiles.

29) Fragrance:
Fragrance pertains to the aromatic properties of Murraya koenigii leaves, commonly used in culinary contexts. While this aspect is secondary to the medicinal properties studied, it emphasizes the multifaceted roles of plants in health, nutrition, and sensory experiences.

30) Obsession:
Obsession in this context refers to the prevalent reliance on synthetic drugs for pain management. The study reflects a shift toward exploring natural and holistic remedies, indicating a growing recognition of the potential benefits of traditional medicine to complement or replace conventional therapies.

31) Flavonoid:
Flavonoid represents a class of compounds found in Murraya koenigii that may contribute to its medicinal properties. The study could explore how flavonoids exert protective effects against oxidative stress, emphasizing their potential role in neuroprotection and pain modulation.

32) Ayurveda (Āyurveda, Ayus-veda):
Ayurveda signifies an ancient system of medicine from India that utilizes herbal remedies to promote health. The study's investigation of Murraya koenigii illustrates the relevance of Ayurvedic practices in contemporary research, potentially validating traditional remedies through scientific inquiry.

33) Toxicity:
Toxicity pertains to the safety evaluation of Murraya koenigii. Understanding the toxicity profile of potential treatments is essential to ensure that herbal remedies do not cause adverse effects, fostering the development of safe and effective therapeutic options for neuropathic pain.

34) Channel:
Channel likely refers to ion channels involved in pain signaling. Pregabalin, a standard treatment in the study, acts on calcium channels to relieve neuropathic pain, highlighting the relevance of detailed understanding of ion channel dynamics in pain management.

35) Leprosy:
Leprosy is addressed as one of the conditions that can induce neuropathic pain. Its inclusion contextualizes the broader range of diseases associated with neuropathic pain, underscoring the need for effective treatment strategies across different pathological conditions.

36) Siddha (Siddhā):
Siddha is another traditional Indian medical system that utilizes natural substances for healing. The study reflects the growing interest in Siddha practices as part of the holistic approach toward healthcare, suggesting that research might validate historical knowledge in treating pain.

37) Thomas:
Thomas could refer to Thomas Baker, a supplier of some drugs used in the study. Its mention emphasizes the critical role of reliable suppliers in ensuring the quality and availability of substances necessary for rigorous scientific research.

38) Punjab:
Punjab is significant as the region where the Chandigarh College of Pharmacy is located. This connection highlights the contribution of local educational institutions to pharmaceutical research aimed at addressing health challenges faced in the region and beyond.

39) Family:
Family refers to the botanical classification of Murraya koenigii within the Rutaceae family. Understanding the plant's classification is important as it provides insights into its related species and potential shared medicinal properties based on phylogenetic relationships.

40) Insect:
Insect might refer to the traditional medicinal uses of Murraya koenigii for treating insect bites. This highlights the versatility of the plant in folk medicine as well as the need to explore both ancient and modern uses of botanical substances in healthcare.

41) Powder:
Powder signifies the form in which herbal extracts are often processed for use in treatments, ranging from culinary to medicinal applications. Understanding this aspect is crucial for the preparation and effective administration of herbal products studied for their therapeutic impacts.

42) Indian:
Indian denotes the geographic and cultural context of the research, as Murraya koenigii has significant cultural and medicinal importance in India. This association highlights the importance of ethnobotanical knowledge in the exploration and validation of traditional remedies.

43) Lanka (Laṅkā, Laṅka, Lamka, Lànkà):
Lanka, referring to Sri Lanka, highlights the geographic range of Murraya koenigii. Understanding the plant's cultivation in neighboring countries emphasizes the shared cultural and medicinal heritage regarding the use of herbal medicines across South Asian regions.

44) House:
House refers to the housing conditions provided for the experimental rats. The design and management of animal housing play a crucial role in minimizing stress and ensuring reliable behavioral outcomes in scientific research.

45) Tree:
Tree signifies Murraya koenigii's classification as an aromatic shrub or small tree. This aspect underscores the importance of botanical knowledge in identifying and utilizing plants with potential medicinal applications in treating conditions like neuropathic pain.

46) Sign:
Sign pertains to the observable symptoms of pain or neurological dysfunction in the observational components of the study. Monitoring these signs is critical for assessing the effectiveness of treatments and understanding the dynamics of neuropathic pain.

47) Hair:
Hair refers to the process of shaving the lower back of rats to expose the sciatic nerve during surgical procedures. This operational detail is important for ensuring that procedures are clean, minimizing contamination, and focusing on the area of interest for nerve injury.

48) Rich (Ṛch):
Rich describes the abundance of bioactive compounds present in Murraya koenigii. The study focuses on how these compounds contribute to the plant's medicinal properties, emphasizing the potential of herbal medicines as effective treatments for various health conditions.

Other Science Concepts:

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Discover the significance of concepts within the article: ‘Effects of Murraya koenigii on neuropathic pain in rats.’. Further sources in the context of Science might help you critically compare this page with similair documents:

Ayurvedic medicine, Animal husbandry, Anti-inflammatory activity, Neuroprotective activity, Oxidative stress, Analgesic activity, Lipid peroxidation, Pathophysiology, Reduced glutathione, Institutional animal ethics committee, Experimental animals, Behavioral parameters, Positive control, Experimental protocol, Murraya koenigii.

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