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Relationship between homocysteine and non-dipper pattern in patients with type 2 diabetes mellitus
Serdal Korkmaz1, Abdulkerim Yilmaz, Gürsel Yildiz
1Division of Hematology, Cumhuriyet University School of Medicine, Sivas, Turkey.
Insights
Higher homocystein levels were observed in non-dipper patients with type 2 diabetes mellitus and in the control group. However, no significant difference was found between dipper and non-dipper groups regarding homocystein levels.
Area of Science:
- Cardiology
- Endocrinology
- Vascular Biology
Background:
- Type 2 diabetes mellitus (type 2 DM) is associated with a reduced rate of nocturnal blood pressure (NBP) reduction.
- Hyperhomocysteinemia (HHC) negatively impacts vascular structure and function.
- Diabetic patients with HHC face an elevated risk of vascular disease.
Purpose of the Study:
- To investigate potential differences in homocystein levels between dipper and non-dipper patients with type 2 DM.
- To explore the relationship between nocturnal blood pressure patterns and homocystein levels in type 2 DM.
Main Methods:
- A comparative study involving 50 patients with type 2 DM and 35 healthy controls.
- Ambulatory blood pressure monitoring (ABPM) was conducted for all participants.
- Homocysteine levels were measured in all subjects.
Main Results:
- The non-dipper pattern was more prevalent in type 2 DM patients (72%) compared to controls (57%).
- Homocysteine levels were higher in non-dipper individuals (13.4 ± 8.1 µmol/L in type 2 DM, 11.8 ± 5 µmol/L in controls) than in dipper individuals (11.8 ± 5.8 µmol/L in type 2 DM, 10.1 ± 4.2 µmol/L in controls).
- No statistically significant difference in homocystein levels was observed between dipper and non-dipper groups in either type 2 DM patients (p = 0.545) or controls (p = 0.294).
Conclusions:
- While homocystein levels trended higher in non-dippers, this difference was not statistically significant in either group.
- Both high homocystein levels and the non-dipper blood pressure pattern are recognized contributors to increased cardiovascular risk.
- Further research with larger cohorts is warranted to elucidate the relationship between nocturnal blood pressure variations and homocystein levels.
Objective:
The rate of reduction of nocturnal blood pressure (NBP) is lesser than normal in patients with type 2 diabetes mellitus (type 2 DM). Hyperhomocysteinemia (HHC) disrupts vascular structure and function, no matter the underlying causes. The risk of development of vascular disease is greater in diabetic patients with hyperhomocysteinemia than in patients with normal homocystein levels. The aim of the study was to investigate whether there are differences of homocystein levels in dipper and non-dippers patients with type 2 DM.
Subjects And Methods:
We compared 50 patien-ts (33 females, 17 males) with type 2 DM and 35 healthy individuals (18 females, 17 males ) in a control group. Ambulatory blood pressure monitoring (ABPM) was performed and homocysteine levels were measured in all patients.
Results:
We found that the percentage of non-dipper pattern was 72% in patients with type 2 DM and 57% in control group. In diabetic and control individuals, homocystein levels were higher in non-dipper (respectively 13.4 ± 8.1 µmol/L and 11.8 ± 5 µmol/L) than in dipper subjects (respectively, 11.8 ± 5.8 µmol/L and 10.1 ± 4.2 µmol/L), but there was no significant difference between the two groups (respectively, p = 0.545, p = 0.294).
Conclusion:
In both groups, homocystein levels were higher in non-dipper than in dipper participants, but there was no significant difference between the groups. High homocystein levels and the non-dipper pattern increases cardiovascular risk. Therefore, the relationship between nocturnal blood pressure changes and homocystein levels should be investigated in a larger study.
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