|Abstract: ||研究背景：情感性疾患主要是重度憂鬱症(MDD)和躁鬱症(BPD，包括BPI和BP II)，在一般人群中是常見的。然而，很少有人知道他們的臨床特點和MAPK8IP1基因的單一核苷酸多型性關係。
結果：使用匹茲堡睡眠品質量表來評估在過去一個月的睡眠情況，在個案、家屬及健康對照組間進行比較，除睡眠時間不顯著外(P= 0.274)，其他項目都有統計上的顯著性，包括睡眠品質(P <0.001)、睡眠潛伏期(P<0.001)、睡眠效率(P <0.001)、睡眠困擾(P <0.001)、使用藥物(P <0.001)和白天功能障礙(P <0.001)等。探討基因變異與情緒障礙行為之間的關係時發現，各種情緒障礙與MAPK8IP1基因單一核苷酸多型性(SNP) rs1554338位點沒有顯著相關。但自殺行為在病患組AA/AG與GG比較，接近顯著性(P= 0.059)。探討rs1554338位點與身體質量指數(BMI)及糖尿病的關係，發現並無顯著的影響。在啟動子分析實驗上，比較rs1554338位點A與G對MAPK8IP1基因啟動子的影響，發現沒有顯著差異，為進一步探討這位點對基因表現的重要性，將之突變為T則明顯降低啟動子活性。
Backgrounds: Affective disorders, mainly depressive (MDD) and bipolar disorders (BPD, including BP I and BP II), are common in the general population. However, little is known about the correlation of genetic variation and clinical features.
Objectives: The objectives of this study are to correlate SNP of MAPK8IP1 gene with clinical features and to study the effects of this SNP on promoter activity.
Materials and Methods: There were 1242 participants, including 464 probands, 522 relatives and 256 controls ascertained from six regional hospitals or clinics in the Southern and Northern Taiwan from 2008 to 2012. Participants were interviewed by well-trained interviewers using Composite International Diagnostic Interview (CIDI) to collect data on demographic and clinical features. The data were collected from the interviews of patients with depression or bipolar disorder, their families and healthy people. Then we cloned the promoter of MAPK8IP1 gene, which is associated with mental diseases or responding to environmental factors, and compared the promoter activities between the promoters containing different variations. We also studied the correlation of these alleles with performance of patients suffered by mental diseases.
Results: Pittsburgh Sleep Quality Index, PSQI, was used to assess the past month sleep situation. There were significant differences among probands, relatives and controls in six items, including sleep quality (p<0.001), sleep latency (p<0.001), sleep efficiency (p<0.001), sleep disturbances (p<0.001), use of medications (p<0.001) and day-life dysfunction (p<0.001). However, sleep duration was not significant (p=0.274). We then analyze the correlation of mood disorders and SNP (rs1554338) of MAPK8IP1 gene and found that there was no significance.
However, it is more significant in suicide between MAPK8IP1 genotypes, AA/AG vs GG in patients (P=0.059). In addition, rs1554338 does not correlate to BMI or diabetics. We also found that promoter activities of MAPK8IP1 gene on A and G alleles are similar. However this site is important for MAPK8IP1 gene expression, because mutation of allele A or G to T decreased promoter activity significantly.
Conclusion: Mood disorder is associated with sleep quality, including quality, latency, efficiency, disturbances, medications and dysfunction. Except for suicide, mood disorders are not associated with SNP on MAPK8IP1 promoter. The site of MAPK8IP1 rs1554338 is important for promoter activity.