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Darlan, Dewi M.
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Biochemistry, Genetics & Molecular Biology Chemistry Health Professions Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Physics Public Health

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Prevalence and distribution of intestinal parasitic infections in taeniasis endemic area of North Sumatera, Indonesia Yulfi, Hemma; Darlan, Dewi M.; Panggabean, Merina; Andriyani, Yunilda; Rozi, Muhammad F.; Wandra, Toni
Narra J Vol. 4 No. 2 (2024): August 2024
Publisher : Narra Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52225/narra.v4i2.912

Abstract

A group of helminthic and intestinal protozoa causes intestinal parasitic infections (IPIs), affecting more than 2.5 billion people worldwide. IPIs are diseases closely associated with poor hygiene and sanitation, concentrated in underdeveloped regions and among populations with low socioeconomic status. Consequently, most prevalence is in Sub-Saharan Africa and Asia, with local habits or risk factors that could affect its prevalence. The aim of this study was to determine how hygienic practices, sanitation, and local behavior of eating raw meat (hinasumba) contributed to the prevalence of IPI. A cross-sectional study was conducted in the Simalungun District of North Sumatera Province, involving 428 people of Batak Simalungun. There were 15 villages randomly selected across the district based on the local registry, which consequently, non-purposive sampling was conducted. Face-to-face interviews assessed various risk factors, such as demographic characteristics, water source, traditional raw meat consumption, or hinasumba as local risk factors, hygienic practices, and sanitation. The findings indicated that an overall prevalence rate of IPI was 42.9%, consisting of 87.5% with helminthic infection and 12.5% with protozoal infection. More than half of IPI cases were associated with Taenia sp. infections (21.8%), followed by hookworms’ infections with a 6.1% positivity rate. Based on multivariate analysis, farming and consuming traditional delicacies, namely hinasumba, increased the likelihood of IPI occurrence among the population by 1.7 and 3 times, respectively. It can be concluded that the high prevalence of taeniasis in the study area was associated with local behavior and hinasumba consumption, which may contribute to determining the dominance of specific IPI species.
Mesenchymal stem cells for immune modulation in systemic lupus erythematosus: From bench research to clinical applications Ginting, Andi R.; Munir, Delfitri; Amin, Mustafa M.; Darlan, Dewi M.; Putra, Agung; Rusda, Muhammad; Mutiara, Erna; Mayasari, Evita; Rozi, Muhammad F.
Narra J Vol. 4 No. 3 (2024): December 2024
Publisher : Narra Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52225/narra.v4i3.994

Abstract

Systemic lupus erythematosus (SLE) is a prevalent autoimmune disease affecting multiple organ systems. Disease progression is inevitable as part of its natural course, necessitating aggressive therapeutic strategies, particularly with the use of immunosuppressants. Long-term use of steroids and other immunosuppressants is associated with significant adverse effects. Mesenchymal stem cells (MSCs) have been shown to modulate the immune response, leading to immunosuppressive effects against self-antigens. MSCs have demonstrated the ability to modulate several immune cell populations, contributing to favorable outcomes in controlling immune and inflammatory conditions. Recent evidence has shown an increase in Treg and Breg cell subsets following MSC administration, along with modulation of other immune cells, including dendritic cells, B cells, and T cells. However, the balance between MSC pro-inflammatory and anti-inflammatory phenotypic activation remains a critical factor in determining therapeutic outcomes. Various covariates also influence the efficacy of MSC therapy. The aim of this study was to provide a comprehensive overview of the utilization of mesenchymal stem cells (MSCs) in SLE treatment, leveraging their immunomodulatory and immunosuppressive capabilities. Understanding the fundamental preclinical effects of MSCs and recent findings from clinical studies may enhance the potential of MSC therapy in the management of SLE patients.
Community-based intervention in mosquito control strategy: A systematic review Yulfi, Hemma; Panggabean, Merina; Darlan, Dewi M.; Siregar, Irma SS.; Rozi, Muhammad F.
Narra J Vol. 5 No. 1 (2025): April 2025
Publisher : Narra Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52225/narra.v5i1.1015

Abstract

As part of the World Health Organization’s One Health Initiative, vector-borne disease control requires multidisciplinary and community involvement. This review examined community-based mosquito control intervention methods, their efficacy, and limitations. Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guideline, data were extracted from four medical databases: PubMed, Clinical Key, ProQuest, and ScienceDirect, covering the period from 2014 to 2023. The search used the keywords "community intervention," "vector control," and "mosquito." Filters were applied for full text, primary sources, scholarly journals, and publications within the last ten years (2014–2023). Studies without community intervention components were excluded. The initial search retrieved 1,035 articles, and 32 full-text articles were selected and assessed for eligibility, with 15 papers included in the final analysis. The included studies focused on arbovirus or malaria vectors and used randomized controlled trials (RCTs), pre- and post-intervention surveys, community-based implementation surveys, or qualitative research designs. Commonly applied interventions included community-driven vector population control and community education. Overall, the studies reported improvements in outcome measures such as entomological indices, community knowledge and practices, costs, and disease incidence or prevalence. However, some studies reported challenges with community perception and acceptance. In conclusion, this review consistently demonstrated a positive impact of community interventions on managing mosquito control.
Secretome from hypoxic mesenchymal stem cells as a potential therapy for ischemic stroke: Investigations on VEGF and GFAP expression Silvana, Sisca; Japardi, Iskandar; Rusda, Muhammad; Daulay, Rini S.; Putra, Agung; Mangunatmadja, Irawan; Darlan, Dewi M.; Sofyani, Sri; Andreas, Yana
Narra J Vol. 4 No. 3 (2024): December 2024
Publisher : Narra Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52225/narra.v4i3.1181

Abstract

Ischemic stroke is a sudden onset of neurological deficit resulting from a blockage in cerebral blood vessels, which can lead to brain tissue damage, chronic disability, and increased risk of mortality. Secretome from hypoxic mesenchymal stem cells (SH-MSC) is a potential therapy to improve neurological deficit by increasing the expression of vascular endothelial growth factor (VEGF) and reducing glial fibrillary acidic protein (GFAP). These effects can reduce the infarction area of ischemic stroke. Therefore, the aim of this study was to analyze the effect of 150 μL and 300 μL SH-MSC injection on VEGF and GFAP expression as well as the improvement of infarction area in ischemic stroke animal model. A post-test-only experimental design with consecutive sampling was used, with Rattus norvegicus as subjects. Stromal mesenchymal stem cells (S-MSCs) were isolated from the umbilical cords of rats at 21 days of gestation. Secretome production by the S-MSCs was induced under a hypoxic condition, and subsequently isolated. The resultant secretome was administered to rats subjected to middle cerebral artery occlusion (MCAO) at doses of 150 μL (P1 group) and 300 μL (P2 group). The results showed that the infarction area was reduced in P1 (p<0.001) and P2 groups (p<0.001). SH-MSC at a dose of 300 μL increased the expression of VEGF (p=0.028) and reduced the expression of GFAP (p=0.001). In conclusion, secretome from hypoxic S-MSC could potentially improve ischemic stroke by upregulating VEGF expression and downregulating GFAP expression.
Hypoxic mesenchymal stem cell secretome upregulates IL-10 and STAT3 gene expressions in mice model with polycystic ovary syndrome Lusiana, Lusiana; Darlan, Dewi M.; Trisnadi, Setyo; Putra, Agung; Amalina, Nur D.; Husain, Sofian A.
Narra X Vol. 2 No. 3 (2024): December 2024
Publisher : Narra Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52225/narrax.v2i3.176

Abstract

Polycystic ovary syndrome (PCOS) is a condition characterized by chronic anovulation and hyperandrogenism, which often leads to infertility. It is closely associated with chronic inflammation triggered by glucose and saturated fat, contributing to hyperandrogenism and negatively impacting a patient’s quality of life. Effective therapeutic approaches are essential to address these issues. The secretome of mesenchymal stem cells (MSCs) have demonstrated the ability to suppress pro-inflammatory cytokine secretion and regulate growth factors. The aim of this study was to investigate the effect of hypoxic mesenchymal stem cell secretome (MHSSCs) on the expression of interleukin-10 (IL-10) and signal transducer and activator of transcription 3 (STAT3) genes in a PCOS-induced mouse model. An in vivo experimental study was conducted using a post-test-only control group design. A total of 24 female C57BL/6 mice were divided into four groups: healthy control, negative control (PCOS mice injected with 0.9% NaCl), T1 (PCOS mice administered 200 μL of MHSSCs), and T2 (PCOS mice administered 400 μL of MHSSCs) for 33 days. Gene expression of IL-10 and STAT3 were quantified using quantitative reverse transcription polymerase chain reaction (qRT-PCR), normalized to the expression of the housekeeping β-actin gene. Statistical analysis using one-way ANOVA followed by the least significant difference (LSD) post-hoc test was then performed. The results showed a significant increase in IL-10 expression in the T2 group compared to the negative control group (p<0.001). STAT3 expression was also significantly higher in the T2 group compared to the negative control group (p=0.035). A dose-dependent effect was observed, with the T2 group demonstrating the highest upregulation of both IL-10 and STAT3 expression levels. The study highlights that the administration of MHSSCs effectively increased IL-10 and STAT3 gene expression, suggesting their potential as a therapeutic strategy to alleviate inflammation in PCOS.
Co-Authors Agung Putra Amalina, Nur D. Amin, Mustafa M. Andreas, Yana Andriyani, Yunilda Daulay, Rini S. Delfitri Munir Erna Mutiara Evita Mayasari Ginting, Andi R. Husain, Sofian A. Irawan Mangunatmadja Iskandar Japardi Lusiana Lusiana Merina Panggabean Rozi, Muhammad F. Rusda, Muhammad Setyo Trisnadi Siregar, Irma SS. Sisca Silvana, Sisca Sri Sofyani, Sri Toni Wandra Yulfi, Hemma