Publications by authors named "Jiun Yan Loh"

Article Synopsis
  • - This study investigates using defatted black soldier fly larvae as a substitute for fishmeal in the diet of juvenile Lates calcarifer, focusing on growth performance, feed efficiency, and economic factors.
  • - Five diets with varying percentages of black soldier fly larvae (0%, 5%, 10%, 15%, and 20%) were tested over 56 days, showing significant differences in weight gain and growth rates among the different treatments.
  • - The results indicated that while some nutritional components of the fish muscle were minimally affected, the groups fed with 5% and 10% BSFL had lower mortality rates when challenged with bacteria, suggesting better health outcomes.
View Article and Find Full Text PDF

The TBX1 gene plays a critical role in the development of 22q11.2 deletion syndrome (22q11.2DS), a complex genetic disorder associated with various phenotypic manifestations.

View Article and Find Full Text PDF
Article Synopsis
  • Streptococcus agalactiae infections in tilapia aquaculture lead to high mortality and significant economic losses, prompting farmers to use antibiotics, which fosters drug resistance.
  • A new live recombinant L. lactis vaccine expressing immunogenic proteins was developed and tested orally on juvenile tilapia, demonstrating that it can generate immune responses and significantly reduce mortality rates.
  • The tSIP version of the vaccine showed the best protection, with a relative percentage of survival of 89% against S. agalactiae, suggesting its potential as an effective oral vaccine for tilapia aquaculture.
View Article and Find Full Text PDF
Article Synopsis
  • - Rachycentron canadum (cobia) is a valuable fish in aquaculture but faces high mortality rates due to diseases, highlighting the need for improved understanding of their innate immunity.
  • - The study investigates the immune-boosting effects of Sarcodia suae water extracts (SSWE) on various mucosal-associated lymphoid tissues in cobia through immersion and oral ingestion methods.
  • - Results show that SSWE significantly upregulates important immune genes in the gills and gut, indicating its potential as a natural stimulant to enhance fish immunity against infections.
View Article and Find Full Text PDF

Aflatoxins (AFs) represent one of the main mycotoxins produced by Aspergillus flavus and Aspergillus parasiticus, with the most prevalent and lethal subtypes being AFB1, AFB2, AFG1, and AFG2. AFs are responsible for causing significant public health issues and economic concerns that affect consumers and farmers globally. Chronic exposure to AFs has been linked to liver cancer, oxidative stress, and fetal growth abnormalities among other health-related risks.

View Article and Find Full Text PDF
Article Synopsis
  • Utilization of calcium lignosulfonate (CaLS) has been shown to enhance shoot multiplication in plants, but the mechanisms behind this effect were previously unclear.
  • Research involving comparative proteomics, biochemical assays, and nutrient analysis revealed that CaLS treatment boosts key cellular processes, including photosynthesis and protein synthesis.
  • The study found that CaLS also improves nutrient uptake and maintains cellular balance by regulating signaling molecules, ultimately promoting shoot growth in the plant.
View Article and Find Full Text PDF

Vacuolar processing enzyme (VPE) is a cysteine protease responsible for vacuolar proteins' maturation and regulation of programmed cell death (PCD). Four isoforms of VPEs were identified previously, but only the functions of βVPE, γVPE, and δVPE were determined. The specific function of a gene is linked to the cis-acting elements in the promoter region.

View Article and Find Full Text PDF

Banana (Musa acuminata) is an important fruit crop and source of income for various countries, including Malaysia. To date, current agrochemical practice has become a disputable issue due to its detrimental effect on the environment. λ-carrageenan, a natural polysaccharide extracted from edible red seaweed, has been claimed to be a potential plant growth stimulator.

View Article and Find Full Text PDF

The Harvey rat sarcoma (HRAS) proto-oncogene belongs to the RAS family and is one of the pathogenic genes that cause cancer. Deleterious nsSNPs might have adverse consequences at the protein level. This study aimed to investigate deleterious nsSNPs in the HRAS gene in predicting structural alterations associated with mutants that disrupt normal protein-protein interactions.

View Article and Find Full Text PDF

Methicillin-resistant (MRSA) is an important cause of pneumonia in humans, and it is associated with high morbidity and mortality rates, especially in immunocompromised patients. Its high rate of multidrug resistance led to an exploration of novel antimicrobials. Metal nanoparticles have shown potent antibacterial activity, thus instigating their application in MRSA.

View Article and Find Full Text PDF

Ischemic heart disease (IHD) constitutes the leading global cause of mortality and morbidity. Although significant progress has been achieved in the diagnosis, treatment, and prognosis of IHD, more robust diagnostic biomarkers and therapeutic interventions are still needed to circumvent the increasing incidence of IHD. MicroRNAs (miRNAs) are critical regulators of cardiovascular function and are involved in various facets of cardiovascular biology.

View Article and Find Full Text PDF

Nile tilapia () is one of the most important food fish in the world. However, the farming industry has encountered significant challenges, such as pathogen infections. Toll-like receptors (TLRs) play an essential role in the initiation of the innate immune system against pathogens.

View Article and Find Full Text PDF

Dysregulation of fibroblast growth factors is linked to the pathogenesis of bladder cancer. The role of FGF1 and FGF3 is evident in bladder cancer; however, the role of FGF4 is vague. Despite being reported that FGF4 interacts with FGF1 and FGF3 in MAPK pathways, its pathogenesis and mechanism of action are yet to be elucidated.

View Article and Find Full Text PDF

Cardiovascular disease (CVD) remains the leading cause of death globally, with unhealthy lifestyles today greatly increasing the risk. Over the decades, scientific investigation has been carried out on reactive oxygen species (ROS) and their resultant oxidative stress based on their changes made on biological targets such as lipids, proteins, and DNA. Since the existing clinical studies with antioxidants failed to provide relevant findings on CVD prediction, the focus has shifted towards recognition of oxidised targets as biomarkers to predict prognosis and response to accurate treatment.

View Article and Find Full Text PDF

Essential oils (EOs) are intricate combinations of evaporative compounds produced by aromatic plants and extracted by distillation or expression. EOs are natural secondary metabolites derived from plants and have been found to be useful in food and nutraceutical manufacturing, perfumery and cosmetics; they have also been found to alleviate the phenomenon of antimicrobial resistance (AMR) in addition to functioning as antibacterial and antifungal agents, balancing menstrual cycles and being efficacious as an immune system booster. Several main aldehyde constituents can be found in different types of EOs, and thus, aldehydes and their derivatives will be the main focus of this study with regard to their antimicrobial, antioxidative, anti-inflammatory and immunomodulatory effects.

View Article and Find Full Text PDF

Despite culturing the fastest-growing animal in animal husbandry, fish farmers are often adversely economically affected by pathogenic disease outbreaks across the world. Although there are available solutions such as the application of antibiotics to mitigate this phenomenon, the excessive and injudicious use of antibiotics has brought with it major concerns to the community at large, mainly due to the rapid development of resistant bacteria. At present, the use of natural compounds such as phytocompounds that can be an alternative to antibiotics is being explored to address the issue of antimicrobial resistance (AMR).

View Article and Find Full Text PDF

The gastrointestinal immune system plays an important role in immune homeostasis regulation. It regulates the symbiotic host-microbiome interactions by training and developing the host's innate and adaptive immunity. This interaction plays a vital role in host defence mechanisms and at the same time, balancing the endogenous perturbations of the host immune homeostasis.

View Article and Find Full Text PDF

Toll-like receptors (TLRs) are evolutionarily conserved proteins of pattern recognition receptors (PRRs) and play a crucial role in innate immune systems recognition of conserved pathogen-related molecular samples (PAMPs). We identified and characterized TLR18 from Nile tilapia (Oreochromis niloticus), OnTLR18, to elucidate its role in tissue expression patterns, modulation of gene expression after microbial challenge and TLR ligands, subcellular localization in fish and human cells, and the possible effectors TLR18 induces in a melanomacrophage-like cell line (tilapia head kidney (THK) cells). OnTLR18 expression was detected in all tissues examined, with the highest levels in the intestine and the lowest in the liver.

View Article and Find Full Text PDF

Marine sponges are sessile invertebrates that can be found in temperate, polar and tropical regions. They are known to be major contributors of bioactive compounds, which are discovered in and extracted from the marine environment. The compounds extracted from these sponges are known to exhibit various bioactivities, such as antimicrobial, antitumor and general cytotoxicity.

View Article and Find Full Text PDF

Climate warming and low pH environment are known to negatively impact all levels of aquatic organism from cellular to organism and population levels. For ammonotelic freshwater species, any abiotic factor fluctuation will cause disturbance to the fish, specifically at the gills which act as a multifunctional organ to support all biological processes. Therefore, this study was designed to investigate the effect of temperature (28 vs.

View Article and Find Full Text PDF

Lignosulfonate (LS) is a commonly used to promote plant growth. However, the underlying growth promoting responses of LS in plant remain unknown. Therefore, this study was undertaken to elucidate the underlying growth promoting mechanisms of LS, specifically calcium lignosulfonate (CaLS).

View Article and Find Full Text PDF

The giant freshwater prawn/giant river prawn, Macrobrachium rosenbergii is one of the high market value crustaceans cultured worldwide. The intensified aquaculture of the species has led to the outbreak of infectious diseases, prominently, the white tail disease (WTD). It is caused by the infection of Macrobrachium rosenbergii nodavirus (MrNV), which was classified in the family of Nodaviridae.

View Article and Find Full Text PDF

Natural products such as essential oils (EOs) are secondary metabolites that can be obtained from either plant or animal sources or produced by microorganisms. Much attention has been given to exploring the use of secondary metabolites as natural antibacterial agents. This study investigates the antibacterial activity and mechanism of β-caryophyllene, a compound that can be found in various EOs, against .

View Article and Find Full Text PDF

Predominance of beneficial bacteria helps to establish a healthy microbiota in fish gastrointestinal system and thus to reduce emerging pathogen. In this study, the colonization efficacy of Lactococcus lactis subsp. lactis CF4MRS in Artemia franciscana and its potential as a probiotic in suppressing Edwardsiella sp.

View Article and Find Full Text PDF