Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Defense Against Bacterial Pathogens01:31

Defense Against Bacterial Pathogens

The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
Colonisation of Pathogens01:25

Colonisation of Pathogens

Pathogen colonization of host tissues is a critical step in the development of infectious diseases. Various pathogenic microorganisms, including bacteria, fungi, viruses, and protozoa, have evolved complex strategies to attach to, invade, and persist within host environments. These mechanisms enable pathogens to establish infections, evade immune responses, and resist antimicrobial treatments.Attachment to Host CellsIn bacteria, colonization typically begins with adherence to host epithelial...
Viral Replication: Lysogenic Cycle01:16

Viral Replication: Lysogenic Cycle

The lysogenic cycle is a crucial viral replication strategy that allows bacteriophages to persist within host cells without immediately destroying them. This process is primarily observed in temperate phages, such as bacteriophage lambda (λ), which infects Escherichia coli. The cycle allows the viral genome to persist across bacterial generations while keeping host cells viable.Integration of the Viral GenomeUpon infection, bacteriophage lambda attaches to the bacterial surface and injects its...
Determinants of Bacterial Pathogenicity and Virulence01:20

Determinants of Bacterial Pathogenicity and Virulence

Pathogenic bacteria employ a variety of strategies to establish infections, including the secretion of extracellular enzymes that act as potent virulence factors. These enzymes facilitate bacterial colonization of host tissues and help evade immune surveillance. By targeting structural components of host tissues and interfering with immune mechanisms, these enzymes play a pivotal role in disease progression.Extracellular Enzymes Facilitating Tissue Invasion: Several bacterial pathogens secrete...
Bacterial Growth Curve01:28

Bacterial Growth Curve

The bacterial growth curve is a fundamental concept in microbiology that describes the dynamics of bacterial population growth in a closed system with controlled environmental conditions, such as temperature and nutrient availability. This curve is divided into four distinct phases: lag, log (exponential), stationary, and death phases, each reflecting a unique stage of bacterial adaptation and growth. During the lag phase, bacteria acclimate to their surroundings by synthesizing essential...
Introduction to the Human Microbiota01:22

Introduction to the Human Microbiota

Microorganisms colonize various regions of the human body, including the mouth, nasal passages, throat, stomach, intestines, urogenital tract, and skin. The total number of microbial cells is estimated to range from 10¹³ to 10¹⁴—comparable to, or exceeding, the number of human somatic cells. This host–microbiome relationship has led to the conceptualization of humans as supraorganisms, wherein microbial communities perform vital roles in development, immunity, and disease...

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Group B Streptococcus antibiotics treatment during pregnancy and the risk of four neurodevelopmental outcomes in Swedish children.

Scientific reports·2026
Same author

Autologous fecal microbiota transplantation restores the infant gut microbiome and metabolome after antibiotics: a case report.

mBio·2026
Same author

Zearalenone exposure and the mammalian gut microbiome: a systematic review of the literature.

Toxicological sciences : an official journal of the Society of Toxicology·2026
Same author

<i>In vitro</i> dormancy models improve ability to predict treatment response in severe marmoset tuberculosis lesions.

bioRxiv : the preprint server for biology·2026
Same author

Rapid microbiome restructuring associated with medical exposure in remote Amazonian Indigenous communities.

Cell reports·2026
Same author

Epigenetic phase variation in the gut microbiome enhances bacterial adaptation.

Cell host & microbe·2026

Video Experimental Relacionado

Updated: Jul 10, 2026

ScanLag: High-throughput Quantification of Colony Growth and Lag Time
07:47

ScanLag: High-throughput Quantification of Colony Growth and Lag Time

Published on: July 15, 2014

Los equilibrios que permiten la persistencia bacteriana en los huéspedes humanos.

Martin J Blaser1, Denise Kirschner

  • 1Department of Medicine, New York University School of Medicine, New York, New York 10016, USA. martin.blaser@med.nyu.edu

Nature
|October 19, 2007
PubMed
Resumen

Los microbios asociados con los humanos evolucionan señal cruzada para relaciones estables y homeostáticas, similares a las comunidades de clímax ecológico. Este modelo predice el comportamiento del ecosistema microbiano bajo la dinámica cambiante de la población humana y la salud.

Más Videos Relacionados

Time-Lapse Epifluorescence Microscopy Imaging of Pseudomonas aeruginosa and Staphylococcus aureus Heterogeneous Phenotypes
07:44

Time-Lapse Epifluorescence Microscopy Imaging of Pseudomonas aeruginosa and Staphylococcus aureus Heterogeneous Phenotypes

Published on: February 14, 2025

High-throughput Screening of Chemical Compounds to Elucidate Their Effects on Bacterial Persistence
07:25

High-throughput Screening of Chemical Compounds to Elucidate Their Effects on Bacterial Persistence

Published on: February 23, 2021

Videos de Experimentos Relacionados

Last Updated: Jul 10, 2026

ScanLag: High-throughput Quantification of Colony Growth and Lag Time
07:47

ScanLag: High-throughput Quantification of Colony Growth and Lag Time

Published on: July 15, 2014

Time-Lapse Epifluorescence Microscopy Imaging of Pseudomonas aeruginosa and Staphylococcus aureus Heterogeneous Phenotypes
07:44

Time-Lapse Epifluorescence Microscopy Imaging of Pseudomonas aeruginosa and Staphylococcus aureus Heterogeneous Phenotypes

Published on: February 14, 2025

High-throughput Screening of Chemical Compounds to Elucidate Their Effects on Bacterial Persistence
07:25

High-throughput Screening of Chemical Compounds to Elucidate Their Effects on Bacterial Persistence

Published on: February 23, 2021

Área de la Ciencia:

  • Ecología microbiana Ecología microbiana.
  • Teoría del juego evolutivo Teoría del juego evolutivo.
  • Investigación del microbioma humano Investigación del microbioma humano.

Sus antecedentes:

  • Los microbios forman relaciones persistentes con los huéspedes humanos.
  • Comprender la estabilidad y la evolución de estas comunidades microbianas es crucial.

Objetivo del estudio:

  • Proponer un marco teórico para las interacciones entre microbios y huéspedes basado en la teoría de juegos.
  • Para modelar la evolución de la homeostasis en los ecosistemas microbianos asociados con el hombre.

Principales métodos:

  • Aplicación de conceptos de la teoría de juegos (equilibrios de Nash, estrategias evolutivamente estables) a la señalización microbiana.
  • Modelación de la dinámica de la comunidad microbiana en respuesta al cambio de los parámetros de la población humana.

Principales resultados:

  • Los microbios asociados con los humanos utilizan mecanismos de señalización cruzada para la homeostasis.
  • Estas relaciones se asemejan a comunidades de clímax ecológico con equilibrios anidados.
  • El modelo predice los estados del ecosistema bajo condiciones como inmunodeficiencia o cambios en la población.

Conclusiones:

  • Las interacciones entre microbios y huéspedes pueden entenderse a través de la teoría evolutiva de juegos.
  • Las estructuras comunitarias anidadas contribuyen a la homeostasis general.
  • El modelo ofrece poder predictivo para futuros cambios ecológicos y relacionados con la salud.