Publications by authors named "Samuel Herianto"

4 Publications

  • Page 1 of 1

The effects of phthalate ester exposure on human health: A review.

Sci Total Environ 2021 Sep 28;786:147371. Epub 2021 Apr 28.

Department of Food Safety/Hygiene and Risk Management, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan; Research Center of Environmental Trace Toxic Substances, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan. Electronic address:

Phthalate esters (PAEs) are one of the most widely used plasticizers in polymer products and humans are increasingly exposed to them. The constant exposure to PAEs-contained products has raised some concerns against human health. Thus, the impacts of PAEs and their metabolites on human health require a comprehensive study for a better understanding of the associated risks. Here, we attempt to review eight main health effects of PAE exposure according to the most up-to-date studies. We found that epidemiological studies demonstrated a consistent association between PAE exposure (especially DEHP and its metabolites) and a decrease in sperm quality in males and symptom development of ADHD in children. Overall, we found insufficient evidence and lack of consistency of the association between PAE exposure and cardiovascular diseases (hypertension, atherosclerosis, and CHD), thyroid diseases, respiratory diseases, diabetes, obesity, kidney diseases, intelligence performance in children, and other reproductive system-related diseases (anogenital distance, girl precocious puberty, and endometriosis). Future studies (longitudinal and follow-up investigations) need to thoroughly perform in large-scale populations to yield more consistent and powerful results and increase the precision of the association as well as enhance the overall understanding of potential human health risks of PAEs in long-term exposure.
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http://dx.doi.org/10.1016/j.scitotenv.2021.147371DOI Listing
September 2021

Nonthermal plasma-activated water: A comprehensive review of this new tool for enhanced food safety and quality.

Compr Rev Food Sci Food Saf 2021 Jan 23;20(1):583-626. Epub 2020 Nov 23.

Department of Food Safety/Hygiene and Risk Management, College of Medicine, National Cheng Kung University, Tainan, 701, Taiwan.

Nonthermal plasma (NTP) is an advanced technology that has gained extensive attention because of its capacity for decontaminating food from both biological and chemical sources. Plasma-activated water (PAW), a product of NTP's reaction with water containing a rich diversity of highly reactive oxygen species (ROS) and reactive nitrogen species (RNS), is now being considered as the primary reactive chemical component in food decontamination. Despite exciting developments in this field recently, at present there is no comprehensive review specifically focusing on the comprehensive effects of PAW on food safety and quality. Although PAW applications in biological decontamination have been extensively evaluated, a complete analysis of the most recent developments in PAW technology (e.g., PAW combined with other treatments, and PAW applications in chemical degradation and as curing agents) is nevertheless lacking. Therefore, this review focuses on PAW applications for enhanced food safety (both biological and chemical safeties) according to the latest studies. Further, the subsequent effects on food quality (chemical, physical, and sensory properties) are discussed in detail. In addition, several recent trends of PAW developments, such as curing agents, thawing media, preservation of aquatic products, and the synergistic effects of PAW in combination with other traditional treatments, are also presented. Finally, this review outlines several limitations presented by PAW treatment, suggesting several future research directions and challenges that may hinder the translation of these technologies into real-life applications.
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http://dx.doi.org/10.1111/1541-4337.12667DOI Listing
January 2021

Systematic Analysis of Phosphatidylinositol-5-phosphate-Interacting Proteins Using Yeast Proteome Microarrays.

Anal Chem 2021 01 11;93(2):868-877. Epub 2020 Dec 11.

Department of Food Safety/Hygiene and Risk Management, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan.

We used yeast proteome microarrays (∼5800 purified proteins) to conduct a high-throughput and systematic screening of PI5P-interacting proteins with PI5P-tagged fluorescent liposomal nanovesicles. Lissamine rhodamine B-dipalmitoyl phosphatidylethanol was incorporated into the liposome bilayer to provide the nanovesicles with fluorescence without any encapsulants, which not only made the liposome fabrication much easier without the need for purification but also improved the chip-probing quality. A special chip assay was washed very gently without the traditional spin-dry step. Forty-five PI5P-interacting proteins were identified in triplicate with this special chip assay. Subsequently, we used flow cytometry to validate these interactions, and a total of 41 PI5P-interacting proteins were confirmed. Enrichment analysis revealed that these proteins have significant functions associated with ribosome biogenesis, rRNA processing, ribosome binding, GTP binding, and hydrolase activity. Their component enrichment is located in the nucleolus. The InterPro domain analysis indicated that PI5P-interacting proteins are enriched in the P-loop containing nucleoside triphosphate hydrolases domain (P-loop). Additionally, using the MEME program, we identified a consensus motif (IVGPAGTGKSTLF) that contains the Walker A sequence, a well-known nucleotide-binding motif. Furthermore, using a quartz crystal microbalance, both the consensus motif and Walker A motif showed strong affinities to PI5P-containing liposomes but not to PI5P-deprived liposomes or PI-containing liposomes. Additionally, the glycine (G6) and lysine (K7) residues of the Walker A motif (-GPAGTGKS-) were found to be critical to the PI5P-binding ability. This study not only identified an additional set of PI5P-interacting proteins but also revealed the strong PI5P-binding affinity ( = 1.81 × 10 M) of the Walker A motif beyond the motif's nucleotide-binding characteristic.
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http://dx.doi.org/10.1021/acs.analchem.0c03463DOI Listing
January 2021

Protein Microarrays and Liposome: A Method for Studying Lipid-Protein Interactions.

Methods Mol Biol 2019 ;2003:191-199

Department of Pharmacology and Molecular Sciences/High-Throughput Biology Center, School of Medicine, Johns Hopkins University, Baltimore, MD, USA.

Interactions between specific lipids and proteins can provide important information regarding the functions of proteins and lipids. One of the novel and powerful methods to identify lipid-protein interactions is using protein microarrays and liposomes. Liposomes are spherical vesicles that are surrounded by phospholipid bilayers in which the lipid of interest can be incorporated. Thus, liposomes can be used to detect lipid-protein interactions and to analyze interactions between thousands of proteins and a small number of lipids with a single experiment. This chapter presents the methods and procedures for using protein microarray assays and liposome fabrication to analyze protein-lipid interactions. Up-to-date research reports are also reviewed briefly.
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http://dx.doi.org/10.1007/978-1-4939-9512-7_10DOI Listing
March 2020