Logo Medical Science Monitor

Call: +1.631.470.9640
Mon - Fri 10:00 am - 02:00 pm EST

Contact Us

Logo Medical Science Monitor Logo Medical Science Monitor Logo Medical Science Monitor

The changes of alpha-amylase activity in serum and different tissues of female rat during sex cycle - isoelectrofocusing studies of alpha-amylase

Sławomir Kasperczyk, Zenon Brzoza, Aleksandra Kasperczyk, Brygida Beck, Hanna Duliban, Anna Mertas

Med Sci Monit 2001; 7(1): BR49-53 :: ID: 510770


Background: It has been suggested that hormonal changes may influence alpha-amylase activity during sex cycle. The aim of this study was to evaluate these changes in serum and different tissues during sex cycle in female rats.
Material/Methods: The animals were assigned to proestrus, estrus, and diestrus groups depending on vaginal smears. We measured the activities of alpha-amylase in the serum, liver, salivary glands, pancreas and ovary of female rats, serum level of calcium, rat luteinising hormone (rLH) and rat follicle stimulating hormone (rFSH). The serum and tissue amylases were also characterized by wide-range polyacrylamide gel isoelectrofocusing.
Results: Statistically significant changes of alpha-amylase activity were found only in the ovary. The activity of alpha-amylase raised from proestrus (mean 303&plusm;124 IU/g) through estrus (mean 157&plusm;123 IU/g) and declined in diestrus (mean 81.9&plusm;51.6 IU/g). There were no statistically significant changes in the serum, liver, salivary glands and pancreas. We found two isoenzymes of alpha-amylase: one peak of amylase, present in the serum, liver, salivary gland and ovary with the mean isoelectric point of ca 5.34 and another present in ovary and pancreas with mean isoelectric point of ca 8.32. The only tissue found to contain both isoamylases was the ovary. We did not find any correlation between serum calcium level and alpha-amylase activity in the serum and ovary.
Conclusions: The pattern of changes of alpha-amylase activity does not depend on the type of isoamylase in the tissue, but probably on the tissue influenced by the sex cycle. The changes of alpha-amylase activity are not mediated by calcium, they seem to result primarily from the profile of sex hormones affecting directly the target tissues.

Keywords: alpha-Amylase, sex cycle, female rats, polyacrylamide gel isoelectrofocusing

Add Comment 0 Comments


01 June 2024 : Editorial  

Editorial: Concerns as Highly Pathogenic Avian Influenza (HPAI) Virus of the H5N1 Subtype is Identified in Dairy Cows and Other Mammals

Dinah V. Parums

DOI: 10.12659/MSM.945315

Med Sci Monit 2024; 30:e945315


In Press

Clinical Research  

Functional Outcomes of Therapeutic Selective Nerve Root Block for Single-Segment Lumbar Spinal Stenosis: A ...

Med Sci Monit In Press; DOI: 10.12659/MSM.943634  

Clinical Research  

Shortening Oral Simethicone-to-Colonoscopy Interval Increases Bowel Preparation Quality

Med Sci Monit In Press; DOI: 10.12659/MSM.943972  

Clinical Research  

Comparative Evaluation of Digital Cephalometric Tracing Applications on Mobile Devices and Manual Tracing

Med Sci Monit In Press; DOI: 10.12659/MSM.944628  

Clinical Research  

Impact of COVID-19-Induced Academic Stress on Insomnia and Suicidal Ideation among Taiwanese Health Trainee...

Med Sci Monit In Press; DOI: 10.12659/MSM.944932  

Most Viewed Current Articles

17 Jan 2024 : Review article   1,801,647

Vaccination Guidelines for Pregnant Women: Addressing COVID-19 and the Omicron Variant

DOI :10.12659/MSM.942799

Med Sci Monit 2024; 30:e942799


14 Dec 2022 : Clinical Research   1,532,330

Prevalence and Variability of Allergen-Specific Immunoglobulin E in Patients with Elevated Tryptase Levels

DOI :10.12659/MSM.937990

Med Sci Monit 2022; 28:e937990


16 May 2023 : Clinical Research   690,353

Electrophysiological Testing for an Auditory Processing Disorder and Reading Performance in 54 School Stude...

DOI :10.12659/MSM.940387

Med Sci Monit 2023; 29:e940387


01 Jan 2022 : Editorial   50,289

Editorial: Current Status of Oral Antiviral Drug Treatments for SARS-CoV-2 Infection in Non-Hospitalized Pa...

DOI :10.12659/MSM.935952

Med Sci Monit 2022; 28:e935952


Your Privacy

We use cookies to ensure the functionality of our website, to personalize content and advertising, to provide social media features, and to analyze our traffic. If you allow us to do so, we also inform our social media, advertising and analysis partners about your use of our website, You can decise for yourself which categories you you want to deny or allow. Please note that based on your settings not all functionalities of the site are available. View our privacy policy.

Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750