Kinetics of drug release from a biodegradable delivery system: in vitro study

| Posted in: Science Health Sciences

Journal name: Journal of Indian Society of Periodontology
Original article title: Kinetics of drug release from a biodegradable local drug delivery system and its effect on Porphyromonas gingivalis isolates: An in vitro study
The Journal of Indian Society of Periodontology (JISP) publishes original scientific articles on periodontology (the study of supporting structures of teeth) and oral implantology. It is a bimonthly open-access journal with special issues for specific occasions.
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Original source:

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Author:

Ranganathan Vijayalashmi, Sabitha Manhalore Ravindranath, Nadathur Doraiswamy Jayakumar, Padmalatha, Sheeja H. Vargheese, Kikkeri Laxminarayana Kumaraswamy


Journal of Indian Society of Periodontology:

(A bimonthly open-access journal)

Full text available for: Kinetics of drug release from a biodegradable local drug delivery system and its effect on Porphyromonas gingivalis isolates: An in vitro study

Year: 2013 | Doi: 10.4103/0972-124X.118311

Copyright (license): CC BY-NC-SA


Summary of article contents:

Introduction

Periodontal disease arises from specific bacterial organisms, primarily gram-negative pathogens, with Porphyromonas gingivalis being a significant contributor. Traditional systemic antimicrobial therapies have been used to combat these pathogens but come with various drawbacks. To address these issues, local drug delivery systems have been explored, particularly the use of resorbable devices made from fibrillar collagen. This study focused on evaluating a bioresorbable collagen fiber device impregnated with tetracycline, assessing its drug release patterns and antibacterial efficacy against P. gingivalis.

Sustained Drug Release and Antibacterial Activity

The study examined the in vitro release of tetracycline from the collagen fiber over a period of 10 days, testing it in two environments: water and serum inoculated with P. gingivalis. Results indicated a significant release of tetracycline in both environments, with a notable presence on all test days. In the serum inoculated group, drug levels fluctuated but remained above therapeutic concentrations required to inhibit bacterial growth. Furthermore, the antibacterial activity was confirmed through a zone of inhibition observed around the residual material, demonstrating effective suppression of P. gingivalis throughout the study duration.

Conclusion

The findings suggest that the bioresorbable collagen fiber device not only facilitates a controlled release of tetracycline over a therapeutic period but also successfully inhibits the growth of P. gingivalis in a culture environment. Given its ability to deliver sustained antibiotic levels and its potential for clinical application, this innovative device could serve as a valuable adjunct to mechanical therapy in the management of chronic periodontitis, improving clinical outcomes and enhancing local antimicrobial efficacy.

FAQ section (important questions/answers):

What was the purpose of the study on tetracycline collagen fibers?

The study aimed to investigate the release patterns of tetracycline from bioresorbable collagen fibers and its antibacterial activity against Porphyromonas gingivalis, a primary pathogen in chronic periodontitis.

How was Porphyromonas gingivalis isolated for the study?

Porphyromonas gingivalis was isolated from plaque samples of chronic periodontitis patients by culturing in a CO2 incubator. DNA isolation and PCR amplification were performed to confirm the presence of the bacteria.

What were the two groups used to assess tetracycline release?

The study involved two groups: Group I used water, and Group II used serum inoculated with Porphyromonas gingivalis to evaluate the release pattern and antibacterial activity of tetracycline.

What did the results indicate about tetracycline's antibacterial activity?

The results showed that tetracycline maintained significant antibacterial activity against Porphyromonas gingivalis for the duration of the study, with consistent zones of inhibition observed for both groups.

What conclusion was drawn regarding the collagen fiber device?

The study concluded that the collagen fiber demonstrated controlled tetracycline release and effectively inhibited growth of Porphyromonas gingivalis, suggesting its potential as an adjunct treatment for chronic periodontitis.

Glossary definitions and references:

Scientific and Ayurvedic Glossary list for “Kinetics of drug release from a biodegradable delivery system: in vitro study”. 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) Drug:
The term 'Drug' refers to tetracycline in this study, which is crucial for treating periodontal diseases. Its controlled release from the collagen fiber enables localized antibiotic therapy, overcoming systemic side effects, and targeting specific pathogens like Porphyromonas gingivalis, thus enhancing clinical outcomes in periodontal treatment.

2) Study (Studying):
'Studying' encompasses the systematic investigation undertaken in this research. It signifies a methodical approach to analyzing tetracycline release and antibacterial activity, which is vital for producing credible, evidence-based findings that contribute to the scientific discourse surrounding periodontal disease treatment.

3) Water:
'Water' is used as a medium in the study to assess the release kinetics of tetracycline. It serves as a comparative control against serum inoculated with bacteria, helping to determine how the drug behaves in a non-pathological environment, which is essential for understanding its therapeutic potential.

4) Activity:
The term 'Activity' relates to the antibacterial effect of tetracycline against Porphyromonas gingivalis. Assessing this activity involves measuring the zone of inhibition around the drug-impregnated collagen fibers, which demonstrates the efficacy of the localized drug delivery system in diminishing pathogenic bacterial growth.

5) Antibiotic (Antibacterial):
The word 'Antibacterial' highlights the primary function of tetracycline in combating bacterial pathogens, specifically Porphyromonas gingivalis, associated with periodontal disease. This characteristic is crucial for the success of local drug delivery systems aimed at effectively controlling microbial colonization in periodontal pockets.

6) Disease:
'Disease' refers to periodontal diseases, which this study aims to address through localized antimicrobial therapy. Understanding the etiology and microbial involvement in periodontal disease underscores the necessity for effective treatment modalities that target specific pathogens, leading to improved patient outcomes and oral health.

7) Table:
The 'Table' refers to organized data representations in the study, providing statistical analysis results for tetracycline concentration and zones of inhibition. Tables facilitate clear comparisons, allowing readers to interpret findings effectively regarding drug release kinetics and antibacterial efficacy over the study period.

8) Biodegradable:
'Biodegradable' signifies the property of the collagen fiber used as a drug delivery vehicle, indicating that it can break down naturally in the body. This feature enhances patient safety and allows for sustained drug delivery without the need for surgical removal, maximizing therapeutic benefits.

9) Inflammation:
'Inflammation' is a key pathological feature of periodontal disease that the study indirectly addresses. By utilizing tetracycline, which has anti-inflammatory properties, the research aims to not only combat infections but also mitigate inflammation associated with periodontal conditions, thus improving overall healing.

10) Calculation:
'Calculation' pertains to the spectrophotometric analysis used to determine tetracycline concentrations during the study. Accurate calculations are crucial for interpreting the data on drug release and assessing whether the concentrations remain within effective therapeutic ranges, ensuring the validity of the research findings.

11) Measurement:
The term 'Measurement' is critical in evaluating the study's results, particularly in assessing tetracycline concentrations and zones of inhibition. Accurate measurements ensure that the antibacterial efficacy of the drug can be quantified, providing a scientific basis for its potential clinical applications in periodontal therapy.

12) Developing:
'Developing' refers to the process of creating and refining the bioresorbable collagen fiber impregnated with tetracycline. This aspect is fundamental as it outlines the innovation of the study, which aims to improve local antimicrobial treatment methods in periodontal disease management, emphasizing advancement in therapeutic technologies.

13) Ramaswamy (Ramaswami):
'Ramaswamy' is mentioned as a key contributor to the study, pinpointing an individual recognized for their expertise and guidance in the research process. Highlighting their role acknowledges the collaborative effort in developing and validating the drug delivery system in the context of periodontology.

14) Knowledge:
The word 'Knowledge' reflects the understanding gained from previous studies regarding the role of specific bacteria in periodontal disease. This context is crucial for the current research, informing the rationale behind using tetracycline as an effective therapeutic agent against identified pathogens.

15) Chennai:
'Chennai' is significant as it is mentioned as the location of the Advanced Biotech Products Private Limited, the manufacturer of Periodontal Plus AB™. This geographic reference situates the study within a specific context, highlighting local innovation in developing therapeutic solutions for periodontal disease.

16) Surface:
'Surface' pertains to the root surface area where the study's local drug delivery systems aim to exert their therapeutic effects. Effective treatment in periodontal therapy often focuses on the root surfaces, where bacterial colonization occurs, reinforcing the necessity for targeted drug release mechanisms.

17) Science (Scientific):
'Science' denotes the discipline within which this study is situated, emphasizing the application of scientific principles in examining drug delivery systems. This term reflects the systematic and empirical nature of research aimed at addressing health-related issues, particularly in the context of periodontal disease management.

18) India:
'India' references the country where the study was conducted and where the local drug delivery system was developed. This context underscores the importance of regional contributions to the global body of dental research and innovation in treating periodontal diseases effectively.

19) Ruci (Rucī):
'Ruchi' is acknowledged as a contributor in the context of previous studies referenced in the research. Her mention highlights the collaborative nature of scientific inquiry and recognizes the importance of building upon existing research to inform future studies in periodontal therapy.

20) Anna (Aṇṇa, Aññā, Añña, Ānna, Aṉṉa, Aṉṉā):
'Anna' refers to Anna University, associated with key contributors to the study. This mention reflects the academic institution's involvement, emphasizing the role of universities in fostering research initiatives that advance clinical practices in dentistry and periodontal disease management.

Other Health Sciences Concepts:

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Discover the significance of concepts within the article: ‘Kinetics of drug release from a biodegradable delivery system: in vitro study’. Further sources in the context of Health Sciences might help you critically compare this page with similair documents:

Antibacterial activity, Polymerase chain reaction, Zone of inhibition, Clinical application, Porphyromonas gingivalis, Chronic periodontitis, Chemical modification, Local Drug Delivery, Therapeutic concentration, Bacterial inoculum, Matrix metalloproteinase, Spectrophotometric Absorbance, Degradation process, Anti-microbial therapy, Collagen fiber.

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