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All Journal Narra J
R. Tedjo Sasmono
Eijkman Institute for Molecular Biology, Jakarta, Indonesia
Biochemistry, Genetics & Molecular Biology Health Professions Immunology & microbiology Medicine & Pharmacology Public Health

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Decline of notified dengue infections in Indonesia in 2017: Discussion of the possible determinants Pandji Wibawa Dhewantara; Kurnia F. Jamil; Jonny Karunia Fajar; Panji Probo Saktianggi; Roy Nusa; Triwibowo Ambar Garjito; Samsul Anwar; Firzan Firzan; Dewi Megawati; R. Tedjo Sasmono; Mudatsir Mudatsir
Narra J Vol. 1 No. 1 (2021): April 2021
Publisher : Narra Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52225/narraj.v1i1.23

Abstract

This study was conducted to quantify the trend in dengue notifications in the country in 2017 and to explore the possible determinants. Annual nation-wide dengue notification data were obtained from the National Disease Surveillance of Ministry of Health of Indonesia. Annual incidence rate (IR) and case fatality rate (CFR) in 2017 and the previous years were quantified and compared. Correlations between annual larva free index (LFI), implementation coverage of integrated vector management (IVM), El Niño Southern Oscillation (Niño3.4), Dipole Mode Index (DMI), Zika virus seropositivity and the percent change in IR and CFR of dengue were examined. The change of dengue IR and CFRs were mapped. In 2017, dengue IR was declined by 71% (22.55 per 100,000 population) compared to 2016 (77.96 per 100,000 population) while the CFR was slightly reduced from 0.79% to 0.75%. Reduction in IR and CFR occurred in 94.1% and 70.1% out of 34 provinces, respectively. The trend of dengue IR seems to be influenced by Niño3.4 but there is no clear evidence that Niño3.4 is the main reason for dengue reduction in 2017. It is difficult to elucidate that the reduction of dengue in 2017 was associated with previous Zika outbreaks. In conclusion, there was a significant reduction on dengue notifications in Indonesia in 2017. Further investigation is needed to look at the role of climate on the decline of dengue IR at finer temporal scale. In addition, study on the role of cross-protective immunity generated by Zika infection on dengue incidence is also warranted.
Correlation of miR-150, hsa-let-7e, and miR-146a and gene expression of IL-6, IL-8, IP-10, and MIP-1β during dengue virus infection Sri Masyeni; Kuntaman Kuntaman; Aryati Aryati; Muchlis AU Sofro; Usman Hadi; Gondo Mastutik; Windu Purnomo; Agus Santosa; Benediktus Yohan; Erni Juwita Nelwan; R. Tedjo Sasmono
Narra J Vol. 1 No. 1 (2021): April 2021
Publisher : Narra Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52225/narraj.v1i1.31

Abstract

Growing evidence suggests that microRNAs (miRNAs) play a pivotal role in viral infection. The objective of this study was to assess the association between the expression of miR-150, hsa-let-7e, and miR-146a on cytokine expression during dengue infection. Dengue virus (DENV) strain SJN-006, a serotype 2 DENV strain of the Cosmopolitan genotype, isolated in Bali, Indonesia, was used to infect peripheral blood mononuclear cells (PBMCs) isolated from healthy individuals. The relative gene expressions of miR-150, hsa-let-7e, and miR-146a as well as the gene expression of cytokines (IL-6, IL-8, IP-10, and MIP-1β) were determined using quantitative real time - polymerase chain reaction (qRT-PCR) at 6, 12 and 24 hours post infection (hpi). Correlations between the microRNAs and cytokines were analyzed by means of causality tests. Our data suggests that miR-150 and hsa-let-7e were significantly higher in infected-PBMCs after 12 hpi compared to the uninfected-PBMCs (p<0.05). The causality tests demonstrated that miR-150 and hsa-let-7e were negatively correlated with IL-8 expression, meanwhile miR-146a was the contrast. DENV infection was negatively and positively correlated with miR-150 and hsa-let-7e, respectively, after 24 hpi. In conclusion, our data demonstrates the vital role of miR-150, hsa-let-7e, and miR-146a in regulating IL-8 expression with possible different pathways.
Co-Authors Agus Santosa Aryati Aryati Benediktus Yohan Dewi Megawati Erni Juwita Nelwan, Erni Juwita Fajar, Jonny Karunia Firzan Firzan Gondo Mastutik Kuntaman Kuntaman Kurnia F. Jamil Muchlis AU Sofro Mudatsir Mudatsir Pandji Wibawa Dhewantara Panji Probo Saktianggi Roy Nusa Samsul Anwar Sri Masyeni, Dewa Ayu Putri Triwibowo Ambar Garjito Usman Hadi Windu Purnomo