Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Surface Membrane Barriers01:18

Surface Membrane Barriers

2.0K
The skin and mucous membranes serve as the primary line of defense against pathogens by providing both physical and chemical protection. These barriers are essential in preventing the entry and establishment of microbes, thereby maintaining the integrity of the host.
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
2.0K
Sputum Studies I: Gram Stain, cytology, and Acid-fast smear and culture01:26

Sputum Studies I: Gram Stain, cytology, and Acid-fast smear and culture

411
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.
Gram Stain
The Gram Stain is an integral part of sputum studies. It involves the staining of sputum, which permits...
411
Bacterial Phylum Spirochaetes01:30

Bacterial Phylum Spirochaetes

313
Spirochetes, unique bacteria in the phylum Spirochaetes, are gram-negative, motile, tightly coiled, slender, and flexible. They inhabit aquatic sediments and animals, with some causing diseases like syphilis. Spirochetes are classified into eight genera based on habitat, pathogenicity, phylogeny, and characteristics.Their distinctive motility arises from endoflagella, located within the cell’s periplasm. These endoflagella anchor at the cell poles and extend along the cell length, encased...
313

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Glymphatic system impairment in dysthyroid optic neuropathy: relation with ocular cerebrospinal fluid circulation and visual function.

Japanese journal of radiology·2026
Same author

Quantitative analysis of orbital soft tissue for the detection of dysthyroid optic neuropathy in patients with thyroid-associated ophthalmopathy, based on three-dimensional cube fast spin-echo Flex.

Quantitative imaging in medicine and surgery·2025
Same author

Surface d-Band Modulation via Biodirected Mineralization Enables Nanoenzymes to Inhibit Radiation-Induced T-Cell Exhaustion and Potentiate Immunoradiotherapy.

ACS nano·2025
Same author

Epac1 Inhibits Orbital Fibroblast Activation to Ameliorate Thyroid-Associated Orbitopathy-Like Features Through the JAK/STAT Signaling Pathway.

Investigative ophthalmology & visual science·2025
Same author

Real-Time Detection of Trace Breath Isoprene Based on Circular Domain Spectral Reconstruction Filtering Combined with Convolutional Neural Network.

Analytical chemistry·2025
Same author

Endocannabinoids disinhibit the ventral tegmental nucleus of Gudden to dorsal premammillary nucleus pathway to enhance escape behavior following learned threat experience.

Nature communications·2025

Related Experiment Video

Updated: Nov 21, 2025

Conjunctival Commensal Isolation and Identification in Mice
07:52

Conjunctival Commensal Isolation and Identification in Mice

Published on: May 1, 2021

4.7K

The microbiologic spectrum of dacryocystitis.

Ban Luo1, Mu Li1,2, Nan Xiang1

  • 1Department of Ophthalmology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 430030, Wuhan, China.

BMC Ophthalmology
|January 12, 2021
PubMed
Summary

Microbiologic profiles of dacryocystitis differ between adults and children. Gram-positive bacteria dominate pediatric infections, while acute pediatric cases show more virulent organisms than chronic ones.

Keywords:
Acute and chronicAdult and pediatricsDacryocystitisMicrobiologic spectrum

More Related Videos

Transcanalicular Diode Laser-assisted Dacryocystorhinostomy for the Treatment of Primary Acquired Nasolacrimal Duct Obstruction
07:30

Transcanalicular Diode Laser-assisted Dacryocystorhinostomy for the Treatment of Primary Acquired Nasolacrimal Duct Obstruction

Published on: October 13, 2017

11.3K
Nasolacrimal Lavage as a Treatment for Ocular Surface Toxic Soup Syndrome
03:40

Nasolacrimal Lavage as a Treatment for Ocular Surface Toxic Soup Syndrome

Published on: April 25, 2025

960

Related Experiment Videos

Last Updated: Nov 21, 2025

Conjunctival Commensal Isolation and Identification in Mice
07:52

Conjunctival Commensal Isolation and Identification in Mice

Published on: May 1, 2021

4.7K
Transcanalicular Diode Laser-assisted Dacryocystorhinostomy for the Treatment of Primary Acquired Nasolacrimal Duct Obstruction
07:30

Transcanalicular Diode Laser-assisted Dacryocystorhinostomy for the Treatment of Primary Acquired Nasolacrimal Duct Obstruction

Published on: October 13, 2017

11.3K
Nasolacrimal Lavage as a Treatment for Ocular Surface Toxic Soup Syndrome
03:40

Nasolacrimal Lavage as a Treatment for Ocular Surface Toxic Soup Syndrome

Published on: April 25, 2025

960

Area of Science:

  • Ophthalmology
  • Microbiology
  • Infectious Diseases

Background:

  • Dacryocystitis, an infection of the lacrimal sac, presents unique challenges in adult and pediatric populations.
  • Understanding the specific microbial causes is crucial for effective treatment, especially differentiating between chronic nasolacrimal duct obstruction (NLDO) and acute infections in children.

Purpose of the Study:

  • To investigate the microbiologic spectrum of dacryocystitis in adult and pediatric groups.
  • To identify specific microbiologic differences between chronic dacryocystitis with NLDO and acute dacryocystitis in the pediatric population.

Main Methods:

  • Retrospective study analyzing demographic and microbiologic data of dacryocystitis patients.
  • Review of culture results to identify causative organisms.

Main Results:

  • Sixty-four adults and 105 pediatric patients with dacryocystitis were analyzed.
  • Adults showed an equal distribution of Gram-positive and Gram-negative isolates (48.65% each), with Streptococcus pneumoniae being most common (14.86%).
  • Pediatric patients predominantly had Gram-positive isolates (58.68%), with Streptococcus pneumoniae (24.79%) most common overall. In acute pediatric dacryocystitis, Staphylococcus aureus (42.11%) was the leading isolate, contrasting with Streptococcus pneumoniae (28.43%) in chronic pediatric cases with NLDO.

Conclusions:

  • Gram-negative isolates are increasingly common in adult dacryocystitis.
  • Gram-positive bacteria remain the primary pathogens in pediatric dacryocystitis.
  • More virulent organisms are identified in acute pediatric dacryocystitis compared to chronic dacryocystitis with NLDO.