Gentamicin sulfate-loaded bone graft: development and optimization.
Journal name: World Journal of Pharmaceutical Research
Original article title: Development, characterization and optimization of gentamycin sulfate loaded bone graft
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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Prothibha Das, Arunima Aravind, Ajith Babu T. K. and Rahina A. S.
World Journal of Pharmaceutical Research:
(An ISO 9001:2015 Certified International Journal)
Full text available for: Development, characterization and optimization of gentamycin sulfate loaded bone graft
Source type: An International Peer Reviewed Journal for Pharmaceutical and Medical and Scientific Research
Doi: 10.20959/wjpr20222-22781
Copyright (license): WJPR: All rights reserved
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Summary of article contents:
Introduction
Bone defects, particularly those resulting from high-energy trauma, present significant challenges in both veterinary and human medicine. Traditional methods of bone reconstruction, such as autografts and allografts, come with various complications, including the need for additional surgeries, limited availability of donor tissue, and risks of disease transmission. This study explores an innovative approach to bone repair by developing a gentamicin sulfate-loaded bone grafting material using a dissolution method and optimizing its composition for enhanced mechanical strength and antibacterial properties.
Optimization of Bone Grafting Material
The preparation of the bone grafting material involved optimizing the concentrations of chitosan, citric acid, and Hydroxypropyl Methylcellulose (HPMC). A Box-Behnken design was employed for the formulation, which allowed for the evaluation of the effects of these variables on the material's porosity and mechanical strength. The study identified an optimal formulation with specific percentages of each component, resulting in a material that achieved 89.5% porosity and a mechanical strength of 6.8 kg/cm³. This optimization is crucial as it significantly impacts the graft’s efficacy in promoting bone regeneration.
Antibacterial Activity of the Graft
An essential feature of the developed bone grafting material is its antibacterial property, which was tested against Staphylococcus aureus using the well diffusion method. The incorporation of gentamicin sulfate proved effective, displaying a significant zone of inhibition, which was classified as excellent. This characteristic addresses the risk of infection in bone defects, enhancing the material's suitability for clinical applications where infection is a concern.
Mechanisms of Setting and Mechanical Properties
The study also detailed the hardening mechanisms of the calcium phosphate cement used in the graft material. The setting reaction consists of a three-stage dissolution-precipitation process, influenced by the materials’ compositions. An increase in citric acid and HPMC concentration resulted in quicker setting times and improved mechanical strength. The formulations indicated that the mechanical strength of the graft material is closely linked to its porosity, with reduced porosity enhancing strength—a critical factor for the stability and performance of the graft in clinical settings.
Conclusion
The development of gentamicin sulfate-loaded bone grafting material represents a promising advance in the field of orthopedic surgery and tissue engineering. By leveraging the properties of calcium phosphate cements and optimizing the formulation for both mechanical strength and antibacterial activity, this study contributes to the ongoing effort to create effective and safe bone substitutes. The findings underscore the importance of innovative synthetic materials that minimize the need for donor sites while providing effective solutions for bone regeneration and infection prevention.
FAQ section (important questions/answers):
What is the purpose of Gentamicin sulfate loaded bone graft?
The Gentamicin sulfate loaded bone graft is designed to reconstruct bone defects, providing mechanical integrity and preventing infection, especially in clinical situations following trauma or surgery.
How was the bone grafting material prepared?
The bone grafting material was prepared using a dissolution method, mixing chitosan, citric acid, HPMC, and tri-calcium phosphate powder to create a slurry, which was then allowed to self-set in molds.
What were the main factors optimized in the study?
The study optimized chitosan concentration, citric acid, and HPMC levels to evaluate their effects on properties like porosity and mechanical strength using Box–Behnken design.
How was the antibacterial activity of the material tested?
Antibacterial activity was assessed using the well diffusion method on agar plates seeded with Staphylococcus aureus, measuring the zone of inhibition after 24 hours of incubation.
What were the results regarding mechanical strength and porosity?
The optimized formulation exhibited 89.5% porosity and a mechanical strength of 6.8 kg/cm³, indicating a suitable balance for bone grafting applications.
What are the advantages of using calcium phosphate cements?
Calcium phosphate cements are biocompatible, self-setting, moldable, and mimic natural bone structure, making them effective and safe alternatives for bone substitutes.
Glossary definitions and references:
Scientific and Ayurvedic Glossary list for “Gentamicin sulfate-loaded bone graft: development and optimization.”. 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) Grafting:
Grafting refers to the process of transplanting tissue to repair or replace damaged or diseased areas in the body. In the context of bone grafting, it involves using biological or synthetic materials to restore mechanical integrity and promote healing in bone defects, overcoming the limitations of autografts and allografts.
2) Powder:
Powder in this context refers to finely ground materials used in the formulation of bone grafts. The tri-calcium phosphate powder is crucial as it serves as the solid phase in the preparation of bone grafting material, contributing to its bioactivity and mechanical properties necessary for bone repair.
3) Swelling:
Swelling is a property of materials indicating their ability to absorb water, leading to an increase in volume. In bone grafting contexts, swelling behavior impacts the performance and stability of graft materials, playing a significant role in ensuring optimal mechanical integrity and biocompatibility once implanted.
4) Aureus:
Aureus refers to *Staphylococcus aureus*, a common bacterium known to cause infections, especially in surgical wounds and bone injuries. In this study, the antibacterial effect of gentamicin sulfate-loaded bone grafts was assessed against *S. aureus*, highlighting the importance of infection control in orthopedic applications.
5) Drug:
Drugs refer to pharmaceutical compounds utilized for therapeutic effects, particularly in preventing infections. In this research, the focus is on the application of gentamicin as a drug integrated into bone grafts, showcasing the intersection of pharmacology and material science in treatment strategies.
6) Study (Studying):
Study refers to the systematic investigation conducted to evaluate the formulation, characterization, and performance of gentamicin sulfate-loaded bone graft materials. It involves various methodologies, including statistical analysis and antibacterial effectiveness, aimed at enhancing treatments for bone defects and improving patient outcomes.
7) Antibiotic (Antibacterial):
Antibiotic pertains to substances that inhibit bacterial growth or kill bacteria. The use of gentamicin sulfate as an antibiotic in the study focuses on synergizing bone graft materials with antibacterial properties to prevent infections, enhancing the healing of bone defects post-surgery.
8) Activity:
Activity refers to the biological effects or actions of a substance. In this study, it relates to the antibacterial activity of the gentamicin sulfate-loaded bone graft material, assessed through its effectiveness in inhibiting growth of *Staphylococcus aureus*, a key factor for clinical success.
9) Surface:
Surface refers to the outer layer of the bone graft material, which plays a crucial role in cellular interactions. The properties of the surface morphology influence cell attachment, proliferation, and differentiation, thereby impacting the overall effectiveness of bone grafts in stimulating healing.
10) Water:
Water is essential to the formulation and performance of bone graft materials. It is used in the preparation phases and significantly influences the hydration, setting time, and bioactivity of calcium phosphate cements, thereby affecting the material's efficacy and suitability for bone repair applications.
11) Table:
Table in the document serves as a structured representation of data, summarizing critical experimental results, such as the formulation details and effectiveness of the bone graft materials. Tables are instrumental in conveying complex information clearly, aiding in comparison and interpretation of results.
12) Hand:
Hand represents a manual method of applying force, particularly in the context of measuring injectability and setting time of cement paste. This emphasizes the importance of evaluating the practical applications of bone graft materials in clinical practice using both manual and mechanical methods.
13) Transmission:
Transmission refers to the transfer of pathogens, such as through allografts. In the context of bone grafting, understanding disease transmission risks associated with donor materials highlights the importance of developing synthetic alternatives that minimize such risks, contributing to safer surgical outcomes.
14) Surrounding:
Surrounding refers to the environment around the implanted bone graft material, which is essential for its performance. The interactions between the graft material and the surrounding biological tissues affect the integration, healing process, and overall success of the graft in orthopedic applications.
15) Measurement:
Measurement pertains to quantifying various parameters that assess the properties and efficacy of bone grafts. Accurate measurement of factors like porosity, mechanical strength, and setting time are crucial to optimize formulations and ensure they meet clinical requirements for bone repair.
16) Kasaragod:
Kasaragod is a geographical reference indicating the location of Malik Deenar College of Pharmacy, where the study was conducted. The local context underscores the importance of advancing pharmaceutical research and developing innovative treatment options in specific regions to address community healthcare challenges.
17) Disease:
Disease refers to any disruption of normal bodily functions, often leading to health complications. In the study, managing the risk of infection and disease transmission during bone grafting procedures is significant, as bone health is crucial for overall rehabilitation and recovery in patients.
18) Harvesting (Harvest):
Harvest refers to the process of obtaining graft materials, notably autologous bone. The challenges related to harvesting, including donor site morbidity and complications, highlight the importance of developing alternative graft materials that require less invasive methods and minimize patient risk.
19) Repair:
Repair denotes the process of restoring damaged tissue, particularly in the context of orthopedic surgery. The study aims to enhance strategies for bone repair using gentamicin sulfate-loaded graft materials, emphasizing the need for effective materials that support healing while preventing infections.
20) Nature:
Nature refers to the inherent characteristics and properties of substances. In the context of the study, understanding the natural properties of calcium phosphate cements and their interaction with biological tissues aids in developing effective bone graft substitutes that mimic natural bone behavior.
21) Reason:
Reason refers to the justification behind decisions made in the study. For example, the incorporation of gentamicin in grafts is based on the reason of preventing bacterial infections, which is critical for successful bone healing and minimizing complications during recovery.
22) Malik:
Malik refers to Malik Deenar College of Pharmacy, the institution where the research is conducted. This association emphasizes the college's contribution to pharmaceutical research and education, and its role in advancing healthcare solutions in the local region and beyond.
23) Noise:
Noise refers to random variability in data and measurements that can obscure true results. In the study, minimizing noise is essential for ensuring that the statistical evaluations and conclusions drawn from the experimental data are reliable and valid.
24) Performance:
Performance in this context refers to the effectiveness of the gentamicin sulfate-loaded bone grafts in achieving desired outcomes, including mechanical properties, porosity, antibacterial activity, and ultimately, the success of healing processes in treatment of bone defects.
25) Observation:
Observation pertains to the process of measuring and recording findings during experiments. In the study, careful observation of parameters like antibacterial activity, swelling, and mechanical strength is crucial for assessing the effectiveness of the bone graft materials under investigation.
26) Discussion:
Discussion refers to the section in which the results of the study are interpreted and contextualized within existing research. This critical analysis helps in understanding the implications and potential applications of the findings in clinical settings and future research directions.
27) Substance:
Substance refers to the materials and components used to prepare bone grafts, including chitosan, calcium phosphates, and gentamicin. Understanding the properties and interactions of these substances is vital for developing effective bone grafting strategies for clinical applications.
28) Fixation:
Fixation denotes a surgical procedure intended to stabilize bones or joints. In the context of the study, understanding fixation techniques is essential for developing graft materials that effectively support healing and integrate with bone structures following injury or surgery.
29) Relative:
Relative refers to the comparison of various factors in the study, such as the mechanical strength or porosity of different formulations. Comparing these relative values is crucial for defining optimal conditions for creating effective bone graft materials in research and clinical practice.
30) Field:
Field denotes a specific area of research or practice. In this study, the field of orthopedics is emphasized, underscoring the significance of advancing bone grafting techniques to enhance surgical outcomes and patient recovery in orthopedic procedures.
31) Babu:
Babu refers to Ajith Babu T. K., one of the contributors to the research. This acknowledgment highlights the collaborative nature of the study and the diverse expertise combined to investigate and develop effective bone grafting materials for clinical applications.
32) Pain:
Pain refers to the physical discomfort that can arise from surgical procedures or bone injuries. Addressing pain management is an essential consideration in any treatment plan, emphasizing the need for effective interventions and materials that support healing while minimizing patient discomfort.
33) Gold (Golden):
Gold often symbolizes the highest standard or the best quality. In this context, the term could relate to autologous bone grafts being considered the 'gold standard' for bone repair and regeneration, thus setting a benchmark for alternative synthetic materials under investigation.
Other Science Concepts:
Discover the significance of concepts within the article: ‘Gentamicin sulfate-loaded bone graft: development and optimization.’. Further sources in the context of Science might help you critically compare this page with similair documents:
Anti bacterial activity, Mechanical strength, Therapeutic approaches, Bone grafting material, Autologous bone.