Publications by authors named "Siregar N"

Article Synopsis
  • This study investigates the effectiveness of intercostal nerve transfer combined with either umbilical cord-derived mesenchymal stem cells (UC-MSC) or secretome therapy in patients with total brachial plexus injury.
  • Using a randomized controlled method, the research evaluates pre- and post-operative outcomes in muscle strength, quality of life, and histological assessments in 15 patients over 8 months.
  • Results indicate significant functional improvements across both treatment groups, with the UC-MSC group showing better health changes, though no notable differences in histological recovery measures were observed.
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Burn injury remains a health problem, specifically in Indonesia. In major burns, xenograft has been proved to be useful as temporary wound coverage. However, some xenografts are not widely available due to cultural, financial and religious backgrounds, or have an unesthetic appearance, such as the scaly appearance of tilapia fish xenograft.

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  • Lumbar intrathecal administration is an effective way to deliver drugs directly to the central nervous system, particularly for targeting dorsal root ganglions in chronic pain research using rat models.
  • There are two main methods for this administration: chronic catheter implantation, which is more invasive and can induce inflammation, and acute needle puncture, which is less invasive but technically challenging.
  • In a study with rat cadavers, ultrasound-guided lumbar intrathecal injections were successful, demonstrating that ultrasound is a valuable tool for improving the accuracy of needle insertion in acute intrathecal procedures.
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Introduction: Colorectal cancer has emerged as a concerning health problem, ranking the third most common form of cancer in both men and women. The phosphatase and tensin homologue (PTEN) protein is widely known for its role as an inhibitor of the phosphatidylinositol 3-kinase/protein kinase-B/mammalian target of rapamycin (PI3K/Akt/mTOR) pathway, playing a major role inhibiting tumor development. Previous studies investigated the role of this protein in the PI3K pathway and how it affected colorectal cancer.

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: Preeclampsia has been linked to an inflammatory response that may be brought on by endothelial cell dysfunction. This paper investigates the pathomechanism of syncytiotrophoblast basement membrane (STBM) damage and Placental Protein 13 (PP13) release, which may have a role in systemic endothelial dysfunction in preeclampsia. : This comparative cross-sectional study involves 54 preeclampsia patients (27 early-onset preeclampsia and 27 late-onset preeclampsia) and 27 pregnant women with normal blood pressure.

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Purpose: The high recurrence rate of idiopathic orbital inflammation (IOI) has been reported. This study aims to determine existing predictive factors for the recurrence of IOI.

Methods: This was an 11-year retrospective study with at least a 12-month follow-up.

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  • Mesenchymal stem cells (MSCs), particularly adipose-derived MSCs (AD-MSCs), are being studied for their potential to differentiate into cardiac pacemaker-like cells (CPLCs) through the upregulation of the TBX3 transcription factor and the inhibition of the nodal signal pathway.
  • TBX3 expression significantly increased in treated groups, resulting in higher expression of pacemaker-specific markers (like Cx30 and HCN genes) compared to control groups, with some gap junction genes showing lower expression.
  • The study concludes that manipulating TBX3 and the nodal pathway effectively promotes the transformation of AD-MSCs into CPLCs, suggesting a promising approach for cardiac treatments.
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  • Breast cancer is a significant health issue in Indonesia, prompting a study to explore potential biomarkers, specifically mitochondrial DNA copy number (mtDNA-CN) and relative telomere length (RTL), which are linked to oxidative stress.
  • Researchers conducted a case-control study comparing blood samples from 175 breast cancer patients to 181 healthy individuals, utilizing quantitative real-time PCR for analysis.
  • Results showed that younger breast cancer patients (under 48) had higher mtDNA-CN and RTL compared to healthy individuals, indicating these biomarkers might be useful for early breast cancer risk assessment.
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  • Despite advancements in lung cancer treatment, many cases are diagnosed late, and biomarkers like microRNA10b (miR-10b), suPAR, and PAI-1 show potential for assessing disease progression and treatment response in advanced non-small cell lung cancer (NSCLC).
  • A study involving 40 advanced stage NSCLC patients revealed that high levels of miR-10b may be protective against disease progression, while elevated suPAR levels served as a risk factor for worse outcomes, and increased PAI-1 levels indicated a protective effect against poor treatment response.
  • Ultimately, the results highlighted suPAR as a significant independent risk factor for the progression and poor response in NSCLC, while miR-10b was not reliable
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  • Splenomegaly, or spleen enlargement, is commonly found in patients with malarial anemia caused by Plasmodium falciparum or P. vivax, but the reasons for this connection are not fully understood.
  • A study in Papua, Indonesia measured red blood cell (RBC) concentrations in the spleens of 37 patients, discovering that spleen size correlated positively with the amount of red-pulp and negatively with white-pulp, indicating a relationship between spleen composition and size.
  • The research revealed that retained RBCs, primarily uninfected, accounted for significant blood loss in P. falciparum infections, and this retention correlated negatively with hemoglobin levels and circulating RBC counts, highlighting the impact
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  • Topical keloid therapy often uses triamcinolone acetonide (TA) injections, but it has a high recurrence rate and side effects.
  • Mesenchymal stem cells (MSCs) can lower fibroblast activity in keloids, and this study evaluates the effectiveness of umbilical cord MSCs (UC-MSC) and their conditioned medium (UC-CM) compared to TA.
  • Results showed the UC-MSC group had the most significant reduction in keloid volume and improvement in symptoms, indicating that UC-MSC and UC-CM are more effective alternatives to TA for treating keloids.
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Burn wound conversion describes the process by which superficial-partial thickness burns convert into deeper burns within 3-7 days after burn. Autophagy, inflammation, ischemia, infection and reactive oxygen species are thought to have a role in pathogenesis of burn wound conversion. This study aims to assess risk factors for burn conversion and develop a scoring system to predict it.

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Objective: Several studies have shown the role of statin added to the patient's chemotherapy regimen and the role of Hydroxymethylglutaryl-CoA Reductase (HMGCR) expression in predicting breast cancer patient outcomes. In our previous study, adding statins improved clinical and pathological responses in LABC patients. Furthermore, we planned to study statin's role as a combination to neoadjuvant chemotherapy (NAC) in treating locally advanced breast cancers on the basis of HMGCR expression.

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Background: Physical exercise is a systematic exercise to increase muscle strength achieve goals such as improving the athlete's physical and preventing injury. Athletes must do is massage therapy to prevent muscle fatigue and pain due to physical exercise or during competition. The increase of lactic acid levels affects the maximum working ability of muscle fibers, decreases physical performance, and is fatigue in which the onset of pain.

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The radiation response of cervical cancer is thought to be enhanced by the levels of melatonin due to its roles in the circadian cycle and cancer growth. In the present study, the roles of circadian rhythms and melatonin levels as prognostic factors for predicting the radiation response in patients with cervical cancer were examined. In this nested case‑control study, patients with good and poor responses to radiotherapy were assessed in terms of the time‑of‑day radiation treatment was administered and further influencing factors.

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  • Streptococcus pneumoniae is a harmful bacterium causing severe infections, and there is limited research on the antibacterial effects of medicinal plants against it.
  • This study investigates the antibacterial properties of 13 Indonesian medicinal plants, identifying Lawsonia inermis Linn. as the most effective against S. pneumoniae, with a minimum inhibitory concentration (MIC) of 0.16 mg/ml.
  • The research also explores the mechanisms of action, revealing that L. inermis causes bacterial lysis, disrupts cell walls, and alters gene expression, particularly increasing lytA while decreasing peZA and peZT expression.
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Ethambutol therapy in certain doses and period can cause bilateral ocular intoxication. There is no definitive therapy that has been found to prevent damage to retina neuronal cells in ethambutol optic neuropathy (EON) cases. Citicoline is thought to have a potential effect to maintain retinal neuron cells.

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Pulmonary fibrosis causes scar tissue formation that disrupts the functioning of the lungs. (Hunter) Roxb (hereafter gambir)-a plant native to West Sumatra in Indonesia-contains flavonoid (+)-catechin, which has strong antioxidant activity and can be used to combat pulmonary fibrosis. This random in vivo experimental study analyzed the antifibrotic effect of gambir on the lungs of rats with bleomycin-induced fibrosis.

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Earth-abundant mineral limestone obtained from North Sumatera, Indonesia, has been utilized to synthesize nano-hydroxyapatite (HAp). Although HAp is biocompatible to the human bone, its antibacterial activity is still very low. Herein, different metal ions (, Ag, Cu, Zn, and Mg) were doped into HAp to improve the antibacterial activity.

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Improving the antibacterial activity to avoid infections and keeping the biocompatibility at a safe level of HAp-based materials is highly important for biomedical applications. In this work, we investigate the antibacterial activity of 2.5Ag/2.

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  • This study investigates the link between the triglyceride-glucose (TyG) index and breast cancer risk among individuals aged 19 and older in Indonesia, using a case-control design.
  • The findings showed that the TyG index was significantly higher in breast cancer patients compared to controls, with higher quartiles of the TyG index indicating increased odds of developing breast cancer.
  • The study concluded that a higher TyG index is associated with breast cancer risk in a nonlinear manner, along with other factors like smoking and contraceptive use.
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This study aims to evaluate the effect of citicoline administration in suppressing retinal damage due to methanol intoxication. This study hypothesizes that citicoline will minimize the loss of retinal ganglion cells (RGCs), minimize disruption of photoreceptors, suppress ganglion layer edema, increase expression of bcl-2 as the antiapoptotic protein, and decrease expression of caspase-3 as the proapoptotic protein. Fifteen Sprague-Dawley rats were divided into 5 groups, including the control group (A); methanol groups, observed on day 3 (B1) and day 7 (B2); and methanol+citicoline groups, observed on day 3 (C1) and day 7 (C2).

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Objective: To evaluate bone regeneration in alveolar defects treated with human umbilical cord-derived mesenchymal stem cells (hUCMSCs), hydroxyapatite/chitosan/gelatin (HA/CS/Gel) scaffold, and bone morphogenic protein-2 (BMP-2) in models.

Design: Randomized posttest-only control group design.

Setting: Animal Hospital at Bogor Agricultural Institute.

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Background: A very large biomass of intact asexual-stage malaria parasites accumulates in the spleen of asymptomatic human individuals infected with Plasmodium vivax. The mechanisms underlying this intense tropism are not clear. We hypothesised that immature reticulocytes, in which P.

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