Related Experiment Video
Updated: Feb 2, 2026

Working with Human Tissues for Translational Cancer Research
Published on: November 26, 2015
Human Papillomavirus Subtype 16 and the Pathologic Characteristics of Laryngeal Cancer
Mohammed Abdel Motaal Gomaa1, Khalid Elsayed El Gindy1, Usama Galal Abdel Nabi1
1Department of Otorhinolaryngology, Minia University, Minia, Egypt.
Objective:
Laryngeal cancer is the most common type of cancer in the head and neck. Human papillomavirus (HPV) represents a group of >150 related viruses. Infection with certain types of HPV can cause some types of cancer. This study aimed to evaluate the sociodemographic and histopathologic characters of squamous cell carcinoma of the larynx and its relationship to HPV subtype 16 (HPV-16).
Study Design:
Cross-sectional.
Setting:
Tertiary university hospitals at 5 districts in Egypt (Minia, Cairo, Giza, Qaluobia, and Bani Seuif).
Subjects And Methods:
This cross-sectional study was conducted on 50 adult patients with laryngeal cancer who were admitted at 5 tertiary care hospitals in Egypt from January 2014 through December 2014. All patients were subjected to a comprehensive preoperative assessment, histopathologic assessments of tumor biopsies, and immunohistochemical staining for HPV-16.
Results:
HPV-16 immunostaining was positive in 9 patients (18%). A significant correlation between HPV-16 immunoreactivity and tumor grade (P < .001) was detected, with no significant correlation between HPV-16 immunoreactivity and other clinical and pathologic variables.
Conclusion:
The frequency of HPV-16 in laryngeal carcinoma is 18%, and there is significant correlation between HPV-16 and tumor grade.
Related Concept Videos
Cattell's 16 Personality Factors
In contrast, source traits are the...
Characteristics of Life
Adrenergic Receptors: ɑ Subtype
Adrenaline ≥ Noradrenaline >> Isoprenaline
α-adrenoceptors are further divided into α1 and α2-adrenoceptors.
α1-Adrenoceptors: These receptors are located postsynaptically on the effector organs and cause constriction of smooth muscle mediated by activation of phospholipase...
Adrenergic Receptors: β Subtype
Isoprenaline > Adrenaline > Noradrenaline
Neurotransmitter binding to these receptors causes activation of adenylyl cyclase resulting in increased concentrations of cAMP and modulation of calcium ion channels within the cell. They are further classified into β1, β2, and β3 subtypes.
β1-adrenoceptors: β1-adrenoceptors...
Characteristics of Fluids
Characteristics of BJT
For input characteristics, the base-emitter voltage is varied, maintaining a constant collector-emitter voltage. This setup reveals a Shockley-type dependence of the collector current on...

