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Related Concept Videos

History of Microbiology01:28

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Microbiology, a scientific field dedicated to the study of microorganisms, has undergone profound development since its inception in the 17th century. Its history is marked by key discoveries and technological advancements that have shaped our understanding of life at the microscopic level and transformed medicine, agriculture, and industry.Early Foundations of MicrobiologyThe early foundations of microbiology were built on groundbreaking observations and the development of pioneering...
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Aseptic techniques prevent contamination, ensure experimental accuracy, and protect researchers and microbial cultures. These techniques are essential in clinical, industrial, and research settings where sterility is required.Maintaining Sterility in Laboratory PracticesScientists maintain sterility by sterilizing tools with heat or chemicals, disinfecting work surfaces, and handling cultures in controlled environments. Working near an open flame or within a laminar flow hood reduces the risk...
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Sputum studies are a critical part of diagnosing and treating numerous respiratory conditions. These studies involve obtaining sputum samples for analysis to identify pathogenic organisms and assess the presence of abnormal cells indicative of malignant conditions. This lesson will delve into three fundamental sputum studies: Gram Stain, Cytology, and Acid-fast Smear and Culture.
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Microbiology and postmortem interval: a systematic review.

Bruna Moitas1, Inês Morais Caldas2,3,4, Benedita Sampaio-Maia5,6,7

  • 1Departamento de Ciências da Saúde Pública e Forenses e Educação Médica, Faculdade de Medicina, Universidade do Porto, Porto, Portugal.

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The human microbiome can help estimate the time after death. Microbial changes on a body offer predictable markers for determining the postmortem interval (PMI).

Keywords:
Bacterial DNAForensic microbiologyMicrobiomeMicroorganismPostmortem interval

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Area of Science:

  • Forensic Science
  • Microbiology
  • Postmortem Interval Estimation

Background:

  • Accurate postmortem interval (PMI) estimation is crucial in forensic investigations.
  • Current PMI methods have limitations, necessitating novel approaches.
  • The human microbiome represents a dynamic biological system influenced by environmental factors.

Purpose of the Study:

  • To systematically review the scientific literature on the utility of the human microbiome for estimating the postmortem interval (PMI).
  • To explore the potential of microbial community dynamics in predicting the time elapsed since death.

Main Methods:

  • A systematic literature search was conducted on the PubMed database.
  • Predefined data fields and keywords were utilized for article selection.
  • Exclusion criteria included reviews, systematic reviews, and meta-analyses, resulting in 14 selected papers.

Main Results:

  • Microorganisms in the cadaveric island exhibit predictable successional patterns over time.
  • Specific microbial markers correlate with different decomposition stages.
  • These microbial shifts show potential as innovative tools for PMI estimation.

Conclusions:

  • The human microbiome holds significant potential for PMI estimation.
  • Microbial communities offer advantages due to their presence in diverse environments and predictable responses to changes.
  • This approach could provide a reliable and versatile method for determining time since death.