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Related Experiment Video

Updated: May 12, 2026

Measuring Intracellular Ca2+ Changes in Human Sperm using Four Techniques: Conventional Fluorometry, Stopped Flow Fluorometry, Flow Cytometry and Single Cell Imaging

Measuring Intracellular Ca²⁺ Changes in Human Sperm using Four Techniques: Conventional Fluorometry, Stopped Flow Fluorometry, Flow Cytometry and Single Cell Imaging

Published on: May 24, 2013

Shedding light on sperm pHertility.

Harvey M Florman¹, Melissa K Jungnickel, Keith A Sutton

¹Department of Cell Biology, University of Massachusetts Medical School, Worcester, MA 01655, USA. harvey.florman@umassmed.edu

|February 11, 2010

Summary

This summary is machine-generated.

Human sperm fertilization capacity relies on intracellular pH regulation. The voltage-sensitive proton channel Hv1 is crucial for sperm maturation and fertilization.

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Last Updated: May 12, 2026

Measuring Intracellular Ca2+ Changes in Human Sperm using Four Techniques: Conventional Fluorometry, Stopped Flow Fluorometry, Flow Cytometry and Single Cell Imaging

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Flow Cytometric Analysis of Biomarkers for Detecting Human Sperm Functional Defects

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Published on: April 21, 2022

Area of Science:

Reproductive biology
Ion channel physiology
Spermatozoa function

Background:

Sperm fertilization capacity is pH-dependent.
Proton transport mechanisms regulating sperm intracellular pH (pH(i)) are not fully elucidated.
Understanding pH(i) regulation is key to understanding sperm maturation.

Discussion:

Hv1, a voltage-sensitive proton channel, is identified in human sperm.
Hv1 plays a significant role in regulating sperm intracellular pH.
This finding sheds light on the molecular mechanisms of sperm functional maturation.

Key Insights:

Hv1 is present and functional in human sperm.
Hv1 activity is critical for achieving fertilization capacity.
The study identifies a novel regulator of sperm maturation.

Outlook:

Further research into Hv1's role in male fertility.
Potential therapeutic targets for infertility based on Hv1 modulation.
Exploring Hv1 function in other species' sperm.