Glycemic Fluctuations in Newly Diagnosed Growth Hormone-Secreting Pituitary Adenoma and Cushing Syndrome Subjects

Study Overview
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Brief Summary
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Glucose fluctuations present not only in patients with diabetes mellitus but also in subjects with normal glucose tolerance or impaired glucose regulation. People with Growth Hormone-Secreting Pituitary Adenoma and Cushing Syndrome are at risk of impaired glucose metabolism. Glycemic variability is poorly studied in the nondiabetic individuals. The aim of the study is to investigate the characteristics of glucose fluctuations in the newly diagnosed Growth Hormone-Secreting Pituitary Adenoma and Cushing Syndrome individuals.

Detailed Description
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Glucose fluctuations present not only in patients with diabetes mellitus but also in subjects with normal glucose tolerance or impaired glucose regulation. Compared with traditional monitoring methods, continuous glucose monitoring system(CGMS) techniques provides a much more detailed understanding of shifting blood glucose levels throughout the day.It is considered reliable to evaluate glucose variability not only in patients with diabetes but also in nondiabetic individuals. People with Growth Hormone-Secreting Pituitary Adenoma and Cushing Syndrome are at risk of impaired glucose metabolism and developing diabetes mellitus.Some researchers have shown that 15-30% Growth Hormone-Secreting Pituitary Adenoma are suffering from diabetes, 15-36% impaired glucose regulation. The rate of Cushing Syndrome individuals is 10-30% and 40-45% separately. Glycemic variability is poorly studied in the nondiabetic individuals and has not been studied in the newly diagnosed Growth Hormone-Secreting Pituitary Adenoma and Cushing Syndrome individuals. In this study CGM was used to dynamically monitor patients being newly diagnosed with Growth Hormone-Secreting Pituitary Adenoma and Cushing Syndrome.

Official Title
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Characteristics of Glycemic Fluctuations in Newly Diagnosed Growth Hormone-Secreting Pituitary Adenoma and Cushing Syndrome Subjects

Conditions
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Pituitary Adenoma

Intervention / Treatment
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* Device: continuous glucose monitoring


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: •newly diagnosed GH-releasing pituitary adenoma •newly diagnosed Cushing Syndrome Exclusion Criteria: •history of diabetes mellitus and being treated with drugs •being treated with drugs which affect glucose metabolism in the lately 3 months •with other hormones affecting glucose metabolism secreted abnormally by pituitary •serious comorbidity like malignant tumour, severe hepatosis or nephropathy, serious hypertension(blood pressure> 180/110mmhg) •pregnant or breastfeeding women •patients allergic to patches or metal
Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Intervention/Treatment |
| --- |
|Device: continuous glucose monitoring|Patients newly diagnosed GH-releasing pituitary adenoma or Cushing Syndrome in our department will be monitored blood glucose by CGMS Gold.|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Continuous glucose profiles of mean data of 24-hour continuous glucose monitoring by the CGMS Gold | The monitoring results consisted of one curve and 5 parameters | 3 days | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| The mean amplitude of glycemic excursion of newly diagnosed GH adenoma patients | The mean amplitude of glycemic excursion of newly diagnosed GH adenoma patients during the 3 days monitored by CGMS Gold | 3 days | 
| The mean amplitude of glycemic excursion of newly diagnosed Cushing Syndrome patients during the 3 days monitored by CGMS Gold | The mean amplitude of glycemic excursion of newly diagnosed Cushing Syndrome patients during the 3 days monitored by CGMS Gold | 3 days | 
| The correlation of MAGE and IGF-1 in newly diagnosed GH adenoma patients | By compared with the outcomes after treated by SSAs or surgery we want to get weather there is a correlation between MAGE and IGF-1 in GH adenoma patients | 6 months | 
| The correlation of MAGE and cortison in newly diagnosed Cushing Syndrome patients | By compared with the outcomes after treated by surgery we want to get weather there is a correlation between MAGE and cortison in Cushing Syndrome patients | 6 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Glucose Fluctuation, GH-Secreting Adenoma, Cushing Syndrome