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"Resistensi insulin adalah penurunan kemampuan jaringan (otot, hati, dan jaringan adiposa) untuk merespon insulin yang bersirkulasi secara normal dalam darah yang berisiko berkembang menjadi penyakit diabetes melitus tipe 2. Rasio tinggi asupan asam lemak omega-6/omega-3 diduga berperan dalam menurunkan sensitivitas insulin. Penelitian ini bertujuan untuk mengetahui hubungan antara rasio asupan omega-6/omega-3 dan HOMA-IR pada perempuan usia reproduktif. Studi potong lintang ini dilakukan di Jakarta, pada bulan Juli sampai Oktober 2021. Pengambilan sampel menggunakan metode consecutive sampling dan diperoleh 79 subjek perempuan yang memenuhi kriteria penelitian. Pengumpulan data dilakukan melalui wawancara 24-hours food recall sebanyak 3 kali, pengukuran antropometri untuk menilai status gizi, dan pengambilan serum untuk mengukur kadar glukosa darah puasa dan insulin. Rerata asupan omega-6 pada subjek adalah 9.43 ± 3.69 gram/hari, median asupan omega-3 pada subjek adalah 0.79 (0.23–3.53) gram/hari, dan rerata rasio asupan omega-6/omega-3 adalah 12.32 ± 4.32. Rerata HOMA-IR pada subjek adalah 3.04 ± 1.24. Terdapat korelasi positif lemah antara rasio asupan omega-6/omega-3 dan HOMA-IR, namun tidak signifikan (r=0.161, p=0.157). Ditemukan hubungan signifikan antara DHA dan HOMA-IR setelah mengontrol faktor perancu (p=0.014). Tidak ada hubungan antara rasio asupan asam lemak omega-6/omega-3 dan HOMA-IR pada perempuan usia reproduktif. Namun, ditemukan hubungan antara asupan DHA dan HOMA-IR yang menunjukkan bahwa peningkatan asupan asam lemak tidak jenuh dapat mencegah terjadinya resistensi insulin.

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Insulin resistance is a decrease in the ability of tissues (muscle, liver, and adipose tissue) to respond to insulin that circulates normally in the blood which is at risk of developing type 2 diabetes mellitus. A high ratio of omega-6/omega-3 fatty acid intake is thought to play a role in reducing insulin sensitivity. This study aims to determine the association between the ratio of omega-6/omega-3 intake and HOMA-IR in reproductive-aged women. This cross-sectional study was conducted in Jakarta, from July to October 2021. Sampling used the consecutive sampling method and obtained 79 women subjects who met the research criteria. Data was collected through 24-hour food recall interviews 3 times, anthropometric measurements to assess nutritional status, and serum sampling to measure fasting blood glucose and insulin levels. The mean omega-6 intake in the subjects was 9.43 ± 3.69 grams/day, the median omega-3 intake in the subjects was 0.79 (0.23–3.53) grams/day, and the mean ratio of omega-6/omega-3 intake was 12.32 ± 4.32. The mean HOMA-IR in the subjects was 3.04 ± 1.24. There was weak positive correlation between the ratio of omega-6/omega-3 intake and HOMA-IR, but not significant (r=0.161, p=0.157). A significant relationship was found between DHA and HOMA-IR after adjusted confounding factors (p=0.014). There was no association between the ratio of omega-6/omega-3 fatty acid intake and HOMA-IR in reproductive-aged women. However, it was found that there was a assocation between DHA intake and HOMA-IR which indicated that increasing intake of unsaturated fatty acids could prevent insulin resistance"

"Latar belakang: Enzim methylenetetrahydrofolate reductase (MTHFR) terlibat dalam metabolism asam folat dan tipe allele mempengaruhi aktivitas enzim. Memberikan suplementasi asam folat kepada ibu hamil dapat mempengaruhi perubahan dalam derajat metilasi gen tertentu yang mempengaruhi kesehatan janin. Walaupun sudah banyak penelitian yang mempelajari peran asam folat sebagai donor dalam mekanisme epigenetik, namun penelitian pengaruh suplementasi besi-asam folat pada luaran kehamilan melalui pendekatan interaksi zat gizi-gen dalam desain penelitian longitudinal masih jarang. Penelitian ini bertujuan untuk mengetahui hubungan antara kadar serum asam folat pada ibu dan anak, dan derajat metilasi pada gen pencetak insulin-like growth factor (IGF2) yang dikenal terlibat dalam tumbuh kembang anak dan dapat digunakan sebagai penanda kemunculan penyakit Metode: Di tahun 2018, penelitian longitudinal dilakukan dengan mengunjungi 127 subyek termasuk anak yang dilahirkan dan mengikutsertakannya dalam penelitian. Enam puluh tujuh serum asam folat ibu selama hamil dan pasca melahirkan diperiksa, sementara serum asam folat anak dikumpulkan sebanyak 44 spesimen untuk pemeriksaan penanda darah. Pemeriksaan serum asam folat dengan menggunakan the liquid chromatography-mass spectrometry/mass spectrometry. Untuk pemeriksaan biomolekuler, tipe allele enzim MTHFR 677C>T and 1298A>C menggunakan Taqman polymerase chain reaction. Sementara metode pyrosequencing digunakan untuk menghitung DNA metilasi pada IGF2 pada anak. Hubungan antar variabel dianalisis menggunakan analisis regresi linier multivariat. Hasil:Tidak ada hubungan yang signifikan antara asupan asam folat dan serum asam folat ibu selama hamil, tiga tahun pasca melahirkan dan anak yang dilahirkan (p>0.05). Penelitian ini tidak dapat menunjukkan hubungan antara tipe allel dari MTHFR 677 C>T dan 1298 A>C dan serum asam folat (p>0.05). Serum asam folat selama hamil juga mempengaruhi status serum asam folat tiga tahun pasca melahirkan (p<0.05) dan status serum asam folat anak (p<0.05). Namun penelitian ini tidak dapat menunjukkan pengaruh status serum asam folat anak dengan DNA metilasi IGF2 pada anak (p>0.05). Simpulan: Serum asam folat selama hamil berkontribusi pada serum asam folat tiga tahun pasca melahirkan dan anak. Genotipe dari MTHFR gene at 677C>T and 1298 A>C kemungkinan tidak terlibat dalam metabolism asam folat pada ibu. Serum asam folat selama kehamilan tidak memiliki dampak pada status metilasi dari IGF2 pada wilayah differentially methylated region (DMR) untuk subyek anak. Namun, beberapa hal harus menjadi perhatian karena, secara statistik, jumlah subyek penelitian tidak memadai. Saran: Perlu dilakukan penelitian lanjutan yang melibatkan subyek lebih banyak dan metode yang lebih canggih dalam menentukan MTHFR dan metilasi DNA.

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Background: Methylenetetrahydrofolate reductase, (MTHFR) enzyme is involved in folic acid metabolism, and their allele types affected its activity. Providing folic acid supplementation to pregnant mothers may influence the change in methylation level in specific genes that affect the susceptibility of disease of their offspring. Although folic acid's role as a donor in the epigenetic mechanism has been investigated, a longitudinal study exploring the influence of iron-folic acid supplementation on maternal dan birth outcome by the nutrient-gene interaction approach is lacking. Therefore, we investigated the relationship of serum folic acid level among the mothers and the children, and the imprinted insulin-like growth factor 2 (IGF2) methylation level that is known actively involved in growth and development in children and possibly utilized as a surrogate marker for the disease Methods: In 2018, the follow-up study conducted by re-visited 67 subjects and put the mother and their children included in the study. For each group, sixty-seven serums were collected for folic acid measurement for mothers during gestation and three-year post-partum. Furthermore, forty-four serums for children were gathered for biomarker measurement. Serum folics were measured by using liquid chromatography-mass spectrometry/mass spectrometry. Determining the genotype of the MTHFR enzyme in position 677C>T and 1298 A>C was used Taqman Polymerase Chain Reaction (PCR) method. The pyrosequencing method was utilized to quantify the methylation level of the IGF-2 of the children. The relationship analysis between variables using multivariate linear regression. Results: There was no relationship between the folic acid intake during gestation and serum folic acid of the mothers during pregnancy, three-year post-partum, and the children (p>0.05). There was no relationship between the allele type of MTHFR 677C>T and 1298A>C and serum folic acid status of the mother (p>0.05). The serum folic acid during pregnancy had a significant relationship to the serum folic acid three-year post-partum (p<0.05) as well as the serum folic acid of the children (p<0.05). There was no significant relationship between the serum folic acid of the children, serum homocysteine, and the methylation status of IGF2 of the children (p>0.05). Conclusion: The serum folic acid during pregnancy contributed to the serum folic acid three-year post-partum of mother and the children. The genotype of the MTHFR gene at 677C>T and 1298 A>C was possibly not involved in folic acid metabolism in the mother. Serum folic acid during pregnancy could not have an effect on the methylation status of the IGF2 in the differentially methylated region (DMR) area of the children. However, this conclusion needs to be taken in caution due to lack of study power Recommendation: Further cohorts studies with a large sample size and more advanced methods in determining the MTHFR enzyme and DNA methylation. Keyword: serum folic acid, genotyping MTHFR 677 C>T, MTHFR 1298 A>C, DNA methylation, IGF2."

"Kekuatan otot adalah salah satu tanda vital yang dapat menentukan risiko fungsi fisik serta risiko mortalitas. Laju penurunan kekuatan otot terjadi lebih cepat dibandingkan dengan laju penurunan massa otot. Kami menghubungkan salah satu faktor yang dapat memengaruhi penurunan kekuatan otot dengan fase awal diabetes, yang juga terkait dengan resistensi insulin. Tujuan penelitian ini untuk mengetahui hubungan nilai HOMA-IR dengan kekuatan relatif genggaman tangan pada wanita dewasa di Jakarta. Kami menggunakan metode cross sectional dan diperoleh 68 subjek. Data diperoleh melalui handgrip dynamometry, sampel darah, food recall 3 x 24 jam, pengukuran antropometri, dan kuesioner aktivitas fisik. Median nilai HOMA-IR 2,765 (0,62 – 6,12). Rerata kekuatan absolut genggaman tangan 25,32 ± 2,27 kg. Hasil kekuatan relatif genggaman tangan melalui perhitungan kekuatan absolut genggaman tangan dibagi berat badan diperoleh median 0,39 (0,22 – 0,61). Hasil uji statistik regresi linier dengan metode Enter menunjukkan tidak ada asosiasi yang signifikan antara HOMA-IR dengan kekuatan relatif genggaman tangan setelah dikontrol dengan IMT sebagai faktor perancu.

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Muscle strength is one of the vital signs that can determine the risk of physical function and overall mortality. The rate of decline in muscle strength occurs faster than the rate of decline in muscle mass. We relate one of the factors that can influence the decrease in muscle strength to the early phase of diabetes, which is also associated with insulin resistance. We aim to determine the association between HOMA-IR value and relative hand grip strength in adult women in Jakarta. We used a cross-sectional method and obtained 68 subjects. Data were obtained through handgrip dynamometry, blood samples, 3 x 24 hours food recall, anthropometric measurements, and IPAQ-SF questionnaires. The HOMA-IR value was obtained with a median of 2.765 (0.62 - 6.12). An average of 25.32 ± 2.27 kg resulted from absolute hand grip strength. While the results of the relative handgrip strength are dividing the absolute handgrip strength by body weight, a median of 0.39 (0.22 - 0.61) was obtained. The linear regression statistical test using the Enter method showed no significant relationship between HOMA-IR and relative hand grip strength after controlling for BMI as a confounding factor."