Publications by authors named "Siregar P"

Background And Objective: Hypertension is a major health issue worldwide, with primary schoolteachers possessing several lifestyle risks of the disease. There have not been any health promotion programs yet for primary school-teachers in Indonesia, especially for blood pressure control. A school-based model of workplace wellness program for teachers was developed.

View Article and Find Full Text PDF

Pesticides are substances used for controlling, preventing, and repelling pests in agriculture. Among them, neonicotinoids have become the fastest-growing class of insecticides because of their efficiency in targeting pests. They work by strongly binding to nicotinic acetylcholine receptors (nAChRs) in the central nervous system of insects, leading to receptor blockage, paralysis, and death.

View Article and Find Full Text PDF

Areca palm nut (Areca catechu) has been listed as one of the most addictive substances, along with tobacco, alcohol, and caffeine. It belongs to the family Arecaceae and is widely used in Asia. Areca nut contains seven psychoactive alkaloids; however, the effects of these alkaloids on behaviors are rarely to be addressed in zebrafish.

View Article and Find Full Text PDF

Background: The prevalence of cigarette smoking among adults is persistently high, and among youth is increasing in Indonesia.

Objective: This study aims to examine the association between youth smoking behavior and outdoor tobacco adverts near home in Indonesia.

Methods: We conducted a cross-sectional survey of 3,557 students in North Sumatera during September-November 2020.

View Article and Find Full Text PDF

Objective: To describe the reproductive health practices of immigrant Indonesian women working in Malaysia and their accessibility to health services.

Methods: A cross-sectional study using a validated self-administered questionnaire was conducted with 593 immigrant Indonesian workers who stayed in Malaysia for at least six months and within the reproductive age group.

Results: About 13.

View Article and Find Full Text PDF

Background: Indonesia has an estimated 61.4 million current smokers, and the smoking prevalence among adults is persistently high while that among youth is increasing. In 2014, Medan city enacted the smoke-free policy (SFP) to protect community members against the adverse effects of smoking.

View Article and Find Full Text PDF
Article Synopsis
  • The study investigates kidney damage in indoor heat-exposed workers at a shoe-making factory in West Java, Indonesia, focusing on the potential of urine specific gravity as a predictive measure for kidney injury.
  • A total of 119 healthy subjects were analyzed, where a small percentage showed decreased kidney function and signs of kidney injury despite generally preserved renal function.
  • Findings revealed that a urine specific gravity cut-off of ≥1.018 effectively predicts increased urinary nephrin levels, indicating potential kidney damage in these workers.
View Article and Find Full Text PDF

Fullerene molecules are composed of carbon in the form of a hollow sphere, tube, or ellipsoid. Since their discovery in 1985, they have gained a lot of attention in many science fields. The unique carbon cage structure of fullerene provides immense scope for derivatization, rendering potential for various industrial applications.

View Article and Find Full Text PDF

Recently, medaka has been used as a model organism in various research fields. However, even though it possesses several advantages over zebrafish, fewer studies were done in medaka compared to zebrafish, especially with regard to its behavior. Thus, to provide more information regarding its behavior and to demonstrate the behavioral differences between several species of medaka, we compared the behavioral performance and biomarker expression in the brain between four medaka fishes, , , , and .

View Article and Find Full Text PDF

Arecoline is one of the nicotinic acid-based alkaloids, which is found in the betel nut. In addition to its function as a muscarinic agonist, arecoline exhibits several adverse effects, such as inducing growth retardation and causing developmental defects in animal embryos, including zebrafish, chicken, and mice. In this study, we aimed to study the potential adverse effects of waterborne arecoline exposure on zebrafish larvae locomotor activity and investigate the possible mechanism of the arecoline effects in zebrafish behavior.

View Article and Find Full Text PDF

Antidepressants are well-known drugs to treat depression and major depressive disorder for humans. However, the misuse and abuse of antidepressants keep increasing with several side effects reported. The aim of this study was to assess the potential adverse effects of 18 antidepressants by monitoring zebrafish larval locomotor activity performance based on the total distance traveled, burst movement count, and total rotation count at four dark-light intercalated phases.

View Article and Find Full Text PDF

As a nicotinoid neurotoxic insecticide, imidacloprid (IMI) works by disrupting nerve transmission via nicotinic acetylcholine receptor (nAChR). Although IMI is specifically targeting insects, nontarget animals such as the freshwater shrimp, , could also be affected, thus causing adverse effects on the aquatic environment. To investigate IMI toxicity on nontarget organisms like , their physiology (locomotor activity, heartbeat, and gill ventilation) and biochemical factors (oxidative stress, energy metabolism) after IMI exposure were examined.

View Article and Find Full Text PDF
Article Synopsis
  • Graphene (GR) and graphene oxide (GO) are potential materials for biomedical uses, but their safety and toxicity require careful evaluation.
  • Adult zebrafish were exposed to different concentrations of GR and GO for 14 days, and their behaviors were assessed through various tests.
  • The study found that exposure to GR and GO altered zebrafish behaviors and neurotransmitter levels, indicating potential toxicity and contributing to the understanding of these materials' biosafety.
View Article and Find Full Text PDF

DNA methylation plays several roles in regulating neuronal proliferation, differentiation, and physiological functions. The major de novo methyltransferase, DNMT3, controls the DNA methylation pattern in neurons according to environmental stimulations and behavioral regulations. Previous studies demonstrated that knockout of induced mouse anxiety; however, controversial results showed that activation of causes anxiolytic behavior.

View Article and Find Full Text PDF

Donepezil (DPZ) is an acetylcholinesterase inhibitor used for the clinical treatment of mild cognitive impairment. However, DPZ has been reported to have adverse effects, including causing abnormal cardiac rhythm, insomnia, vomiting, and muscle cramps. However, the existence of these effects in subjects without Dementia is unknown.

View Article and Find Full Text PDF

Common solvents are frequently used as carriers to dissolve chemicals with a hydrophobic property that is extensively applied in the industrial and biomedical fields. In this study, we aimed to systematically study the sub-chronic effect of ten common solvents at low concentration exposure in adult zebrafish and perform neurobehavioral assessments for mechanistic exploration. After exposed to ten common solvents, including methanol, ethanol (EtOH), dimethyl sulfoxide (DMSO), isopropanol, acetone, polyethylene glycol-400 (PEG-400), glycerol, butanol, pentane, and tetrahydrofuran for continuous 10 day at 0.

View Article and Find Full Text PDF

Graphene and its oxide are nanomaterials considered currently to be very promising because of their great potential applications in various industries. The exceptional physiochemical properties of graphene, particularly thermal conductivity, electron mobility, high surface area, and mechanical strength, promise development of novel or enhanced technologies in industries. The diverse applications of graphene and graphene oxide (GO) include energy storage, sensors, generators, light processing, electronics, and targeted drug delivery.

View Article and Find Full Text PDF

The zebrafish has a tetrachromatic vision that is able to distinguish ultraviolet (UV) and visible wavelengths. Recently, zebrafish color preferences have gained much attention because of the easy setup of the instrument and its usefulness to screen behavior-linked stimuli. However, several published papers dealing with zebrafish color preferences have contradicting results that underscore the importance of method standardization in this field.

View Article and Find Full Text PDF

Wild-type (WT) zebrafish are commonly used in behavioral tests, however, the term WT corresponds to many different strains, such as AB, Tübingen long fin (TL), and Wild Indian Karyotype (WIK). Since these strains are widely used, there has to be at least one study to demonstrate the behavioral differences between them. In our study, six zebrafish strains were used, which are AB, absolute, TL, golden, pet store-purchased (PET), and WIK zebrafishes.

View Article and Find Full Text PDF

The available arable land is unable to fulfill the food production need of rapidly the exponentially growing human population in the world. Pesticides are one of those different measures taken to meet this demand. As a plant growth regulator to block gibberellin, paclobutrazol (PBZ) is used excessively throughout the world to promote early fruit setting, and to increase seed setting which might be harmful because PBZ is a very stable compound; therefore, it can bioaccumulate into the food chain of an ecosystem.

View Article and Find Full Text PDF

Recently, magnetic nanoparticles (MNPs) have gained much attention in the field of biomedical engineering for therapeutic as well as diagnostic purposes. Carbon magnetic nanoparticles (C-MNPs) are a class of MNPs categorized as organic nanoparticles. C-MNPs have been under considerable interest in studying in various applications such as magnetic resonance imaging, photothermal therapy, and intracellular transportof drugs.

View Article and Find Full Text PDF

Lysophosphatidic acid (LPA) is a small lysophospholipid molecule that activates multiple cellular functions through pathways with G-protein-coupled receptors. So far, six LPA receptors (LPAR1 to LPAR6) have been discovered and each one of them can connect to the downstream cell message-transmitting network. A previous study demonstrated that LPA receptors found in blood-producing stem cells can enhance erythropoietic processes through the activation of LPAR3.

View Article and Find Full Text PDF

Lead and lead-derived compounds have been extensively utilized in industry, and their chronic toxicity towards aquatic animals has not been thoroughly addressed at a behavioral level. In this study, we assessed the risk of exposure to lead at a waterborne environmental concentration in adult zebrafish by behavioral and biochemical analyses. Nine tests, including three-dimension (3D) locomotion, novel tank exploration, mirror biting, predator avoidance, social interaction, shoaling, circadian rhythm locomotor activity, color preference, and a short-term memory test, were performed to assess the behavior of adult zebrafish after the exposure to 50 ppb PbCl for one month.

View Article and Find Full Text PDF
Article Synopsis
  • Plastic pollution, particularly in the form of nanoplastics, poses severe health risks due to their ability to infiltrate biological systems and cause neurobehavioral changes.
  • Research on polystyrene nanoplastics (PS-NPs) in adult zebrafish showed significant accumulation in key tissues, including the gonads and brain, with variations based on particle size and shape.
  • Exposure to high concentrations of PS-NPs led to notable behavioral disturbances and alterations in biochemical markers, highlighting the toxic potential of these materials on aquatic life and possibly extending to broader implications for human health.
View Article and Find Full Text PDF

There is an imperative need to develop efficient whole-animal-based testing assays to determine the potential toxicity of engineered nanomaterials. While previous studies have demonstrated toxicity in lung and skin cells after C nanoparticles (NPs) exposure, the potential detrimental role of C NPs in neurobehavior is largely unaddressed. Here, we evaluated the chronic effects of C NPs exposure on behavior and alterations in biochemical responses in adult zebrafish.

View Article and Find Full Text PDF