Evaluation of the Relationship Between Serum Selenium Level and Glycemic Control in Pregnant Patients*

Study Overview
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Brief Summary
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Gestational diabetes mellitus (GDM) occurs in approximately 15% of all pregnancies worldwide.GDM can lead to the development of type 2 diabetes mellitus (T2DM) later in a woman's life. Babies of mothers with GDM have a greater risk of developing T2DM and cardiovascular disease than infants of women without GDM. The degree of insulin resistance is directly proportional to the accumulated free radicals. Selenium functions as an active site component of an antioxidant enzyme, glutathione peroxidase, and helps scavenge free radicals. In addition, an experimental study has shown that selenium provides activation by binding to insulin receptors and lowers blood sugar by increasing glucose uptake by cells. According to all this information, we aimed to evaluate the effect of selenium on blood sugar regulation in pregnant patients.

Detailed Description
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Pregnant patients with no known chronic disease / drug use and who had an oral glucose tolerance test between 24 and 28 weeks of gestation will be included in our study. The presence of one or more of the fasting blood glucose values ≥ 92, 1st Hour ≥ 180 and 2nd Hour ≥ 153 will be considered as gestational diabetes. Our patients diagnosed with gestational diabetes in the second step will be divided into two groups. The first group will be started with diet only, the second group diet + 200 mcg selenium supplement per day. Patients will continue these treatments for 4 weeks, and at the end of 4 weeks, they will follow their fingertip blood sugar for 5 days (fasting, 1st hour satiety and 2nd hour satiety) while the treatment continues. In patients with gestational diabetes diagnosis, our targets for fingertip blood glucose follow-ups at home are fasting <95, 1st hour <140, 2nd hour <120. The 5-day measurements of both groups will be averaged for fasting, 1st Hour and 2nd Hour, and it will be evaluated whether there is a significant difference in blood sugar regulation between the groups that take selenium supplements and those that do not.

Official Title
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Evaluation of the Relationship Between Serum Selenium Level and Glycemic Control in Pregnant Patients*

Conditions
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Gestational Diabetes, Pregnancy Related

Intervention / Treatment
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* Dietary Supplement: selenium+ diet
* Dietary Supplement: only diet


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Presence of one or more of the values of fasting blood glucose ≥ 92, 1st hour ≥ 180 and 2nd hour ≥ 153 among pregnant patients for whom we had an oral glucose tolerance test between 24 and 28 weeks of gestation single pregnancy 18 to 45 years old Exclusion Criteria: chronic disease (thyroid dysfunction, acute/chronic liver disease, acute/chronic kidney disease, hypertension ) Patients with a diagnosis of insulin resistance or diabetes Those who use drugs other than iron, vitamin D and multivitamin support multiple pregnancy patients under 18 years old Patients over 45 years old

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 45 Years

Sexes Eligible for Study
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Female

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: only given diet therapy<br>only diet theraphy | Dietary Supplement: only diet<br>* diet suitable for pregnancy<br>|
| Experimental: given diet therapy and selenium<br>diet theraphy and 200 mcg selenium | Dietary Supplement: selenium+ diet<br>* Selenium functions as an active site component of an antioxidant enzyme, glutathione peroxidase, and helps scavenge free radicals.<br>* Other names: diet;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| five day fasting glucose average | five-day fasting glucose average during treatment after one month of treatment | four weeks | 
| five-day first hour postprandial glucose average | five-day first hour postprandial glucose average during treatment after one month of treatment | four weeks | 
| five-day second hour postprandial glucose average | five-day second hour postprandial glucose average during treatment after one month of treatment | four weeks | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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selenium, gestational diabetes mellitus, glycemic control