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Articles 451 - 480 of 2094

Full-Text Articles in Toxicology

Phytochemical Characterization, Antioxidant Potential, And Health Risk Assessment Of Radix Oryzae Glutinosae, Hai-Ping Liu, Jian-Feng Tang, Kai Ren, Tong-Jun Chen, Ping-Ping Zhu, Dong-Dong Sun, Wei-Yun Wang Sep 2022

Phytochemical Characterization, Antioxidant Potential, And Health Risk Assessment Of Radix Oryzae Glutinosae, Hai-Ping Liu, Jian-Feng Tang, Kai Ren, Tong-Jun Chen, Ping-Ping Zhu, Dong-Dong Sun, Wei-Yun Wang

Journal of Food and Drug Analysis

Radix Oryzae Glutinosae (ROG) has been used as a traditional anhidrotic agent in China. Ten samples were systematically assessed based on four aspects of their chemical profiles and antioxidant activity. The former was achieved using ultraviolet-visible spectra (UV), infrared absorption spectra (IR), proton nuclear magnetic resonance spectroscopy (1H NMR), and inductively coupled plasma-mass spectrometry (ICP-MS) fingerprints, and antioxidant activity was assessed using the 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay, the 2,2′-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) assay, and the ferric reducing antioxidant power (FRAP) assay. The presence of amino acids, flavonoids, organic acids, and sugars was indicated in all samples. A hierarchical …

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Exploring The Relationship Between Metabolite Composition And The Cold/Hot Properties Ascribed In Traditional Chinese Medicine By Mass Spectral Molecular Networking–A Pilot Study, Chun-Han Su, Yu-Chieh Cheng, Kuei-Hung Lai, Yu-Chia Chang, Chi-Hui Sun, Po-Wen Tu, Ching-Chih Lin, Tsong-Long Hwang, Yu-Liang Yang Sep 2022

Exploring The Relationship Between Metabolite Composition And The Cold/Hot Properties Ascribed In Traditional Chinese Medicine By Mass Spectral Molecular Networking–A Pilot Study, Chun-Han Su, Yu-Chieh Cheng, Kuei-Hung Lai, Yu-Chia Chang, Chi-Hui Sun, Po-Wen Tu, Ching-Chih Lin, Tsong-Long Hwang, Yu-Liang Yang

Journal of Food and Drug Analysis

Traditional Chinese medicine (TCM) has been applied to improve human health for millennia. In the TCM system, “medicinal property” (yao xing; hot and cold properties) is a core concept used to describe the influences of medicinal materials on human physiological conditions, and metabolites are believed to be one of the major ingredients of TCMs that affect their medicinal property. However, due to a lack of comprehensive analyses of TCM metabolomes, information about the relationships between TCM metabolite composition and medicinal property remains limited. In this pilot study, a mass spectral molecular networking-based platform was established and applied to …

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Quantification Of Anthocyanosides In Grapes By Quechers And Biphenyl-Uhplc Tandem Mass Spectrometry, Lun-Chi Yang, Sung-Fang Chen Sep 2022

Quantification Of Anthocyanosides In Grapes By Quechers And Biphenyl-Uhplc Tandem Mass Spectrometry, Lun-Chi Yang, Sung-Fang Chen

Journal of Food and Drug Analysis

In this study, the QuEChERS and UHPLC-MS/MS method using a biphenyl stationary phase was developed and applied for the rapid separation of 12 anthocyanosides in grapes. Efficient separation was achieved for a wide range of mono- and un-glycosylated anthocyanosides. The linear ranges of the target anthocyanosides were 0.5 to 500 ng mL−1. The intra- and inter-day precisions were both below 11.8%. Anthocyanosides in grapes from different sources were successfully quantified. Thus, the developed QuEChERS and UHPLC-MS/MS method provide an attractive alternative for the quantification of anthocyanosides in grapes.

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Fluorescence Detection Of Malachite Green In Fish Based On Aptamer And Sybr Green I, Jia Wang, Chengyi Hong, Zhengzhong Lin, Zhi-Yong Huang Sep 2022

Fluorescence Detection Of Malachite Green In Fish Based On Aptamer And Sybr Green I, Jia Wang, Chengyi Hong, Zhengzhong Lin, Zhi-Yong Huang

Journal of Food and Drug Analysis

A simple fluorescence method to quantitatively monitor malachite green (MG) was introduced based on the conformation switch effect of MG-aptamer (Apt) and the fluorochrome of SYBR Green I (SGI). SGI can embed in the stem–loop structure of Apt to produce fluorescence. However, the fluorescence will be quenched when MG is introduced because of the specific binding of Apt to MG. Under the optimal conditions, the fluorescence method displayed excellent linear relationship between the fluorescence quenching efficiencies and the MG concentrations ranging from 0.02 μmol L−1 to 1.0 μmol L−1. The detection limit of the method was 0.67 …

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Bromelain Activates The Amp-Activated Protein Kinase-Autophagy Pathway To Alleviate Hepatic Lipid Accumulation, Po-An Hu, Man-Chen Hsu, Szu-Han Chen, Chia-Hui Chen, Yu Ru Kou, Jenq-Wen Huang, Tzong-Shyuan Lee Sep 2022

Bromelain Activates The Amp-Activated Protein Kinase-Autophagy Pathway To Alleviate Hepatic Lipid Accumulation, Po-An Hu, Man-Chen Hsu, Szu-Han Chen, Chia-Hui Chen, Yu Ru Kou, Jenq-Wen Huang, Tzong-Shyuan Lee

Journal of Food and Drug Analysis

Bromelain, a cysteine protease found in pineapple, is known to exert protective effects against non-alcoholic fatty liver disease (NAFLD); however, the underlying mechanism is unclear. In this study, we aimed to investigate the molecular mechanisms underlying the beneficial effects of bromelain using in vivo and in vitro models. C57BL/6 mice were fed a high-fat diet (HFD) with or without bromelain (20 mg/kg/day) for 12 weeks. We found that treatment with bromelain alleviated hepatic lipid accumulation accompanied by the activation of AMP-activated protein kinase (AMPK) and autophagy flux, as evidenced by the elevated levels of phosphorylated AMPK, ATG5, ATG7, LC3-II, and …

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Metabolism-Involved Drug Interactions With Traditional Chinese Medicines In Cardiovascular Diseases, Ren-Jong Liang, Shu-Hao Hsu, Tien-Yu Chang, Tzu-Yi Chiang, Hong-Jaan Wang, Yune-Fang Ueng Sep 2022

Metabolism-Involved Drug Interactions With Traditional Chinese Medicines In Cardiovascular Diseases, Ren-Jong Liang, Shu-Hao Hsu, Tien-Yu Chang, Tzu-Yi Chiang, Hong-Jaan Wang, Yune-Fang Ueng

Journal of Food and Drug Analysis

Herbal medicines have been widely used for the past millennia. Traditional Chinese medicine (TCM) is a major modality in Chinese medical care and has garnered global attention owing to its pharmacological effects and multi-targeted actions. The increased incidence of sequential or concurrent use of herbs and drugs in patients forces us to consider herb-drug interactions (HDIs) in this modern era. One of the main causes of HDIs is modulation of drug metabolism, in which cytochrome P450 (CYP), UDP-glucuronosyltransferase (UGT), and transporters play primary roles. In this review, we focus on in vivo studies of HDIs, particularly in the treatment of …

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Real-World Evidence Of The Herb-Drug Interactions, Hsueh-Yi Pan, Li-Wei Wu, Pin-Chun Wang, Ping-Hung Chiu, Meng-Ting Wang Sep 2022

Real-World Evidence Of The Herb-Drug Interactions, Hsueh-Yi Pan, Li-Wei Wu, Pin-Chun Wang, Ping-Hung Chiu, Meng-Ting Wang

Journal of Food and Drug Analysis

Herbal medicine (HM) is a type of medicine that uses active ingredients made from plants to treat diseases and maintain health and wellbeing. Due to its increasing worldwide usage, the possibility of HMs and conventional drugs being concurrently used is high, potentially leading to adverse events resulting from herb-drug interactions. Despite the safety concerns regarding such interactions, few studies have been conducted for assessing clinical consequences of using HMs with conventional drugs in real-world settings. As clinical trials are not forthcoming rapidly enough to provide the evidence for herb-drug interactions, observational studies are considered as an alternative approach. The present …

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Mesures À Haute Sensibilité Du Passage De Contaminants Nanométriques À Travers Les Gants De Protection Par Imagerie Médicale, Mahmoud Mohamed Omar, Amélie Augé, Myriam Laprise-Pelletier, Ludovic Tuduri, Marc-André Fortin Sep 2022

Mesures À Haute Sensibilité Du Passage De Contaminants Nanométriques À Travers Les Gants De Protection Par Imagerie Médicale, Mahmoud Mohamed Omar, Amélie Augé, Myriam Laprise-Pelletier, Ludovic Tuduri, Marc-André Fortin

Rapports de recherche scientifique

Les gants de polymère sont utilisés comme équipements de protection individuels dans de nombreux secteurs d’activité professionnelle où les risques chimiques sont présents. Leur efficacité à bloquer le passage de certains contaminants doit être mesurée par des méthodes d’essais précises et standardisées. Les mesures de résistance chimique sont généralement effectuées en utilisant une cellule de perméation, un petit appareil contenant deux réservoirs séparés par la membrane dont on veut mesurer le potentiel-barrière : l’un contient le contaminant, l’autre contient un milieu collectant le contaminant après que celui-ci ait passé à travers la membrane. Au fur et à mesure de l’expérience, …

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Evaluating The Potential Effect Of Nitrogen And Toxicological Responses Of Juvenile Lampsilis Reeveiana (Mollusca: Unionidae) In The Buffalo National River, Anna Marie Pieri Aug 2022

Evaluating The Potential Effect Of Nitrogen And Toxicological Responses Of Juvenile Lampsilis Reeveiana (Mollusca: Unionidae) In The Buffalo National River, Anna Marie Pieri

Student Theses and Dissertations

The Buffalo National River (BUFF) was established as the first national river in 1972 and later designated as an Extraordinary Resource Water and Natural and Scenic Waterway. This thesis seeks to address the potential threat of elevated nutrients and its association with freshwater mussel declines in the BUFF through laboratory and in situ exposures. Water and sediment chemistry data were collected, and relevant thresholds were used to extrapolate lab-to-field toxicity during low-flow events. Acute toxicity was not observed; however, low-concentration chronic toxicity may be influencing mussel assemblages with rising temperatures. Water quality degradation is likely the result of combined sources …

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Metal Accumulation In Soils, Invertebrates, And Whiptail Lizards In The Northern Chihuahuan Desert, Allyson Benson-Pedraza Aug 2022

Metal Accumulation In Soils, Invertebrates, And Whiptail Lizards In The Northern Chihuahuan Desert, Allyson Benson-Pedraza

Open Access Theses & Dissertations

Smelting activities by the American Smelting and Refining Company (ASARCO) lead to the substantial release of metal pollution into the El Paso, Texas, and border cities region. To-date few studies have examined metal accumulation within vertebrate taxa in these areas. As reptiles are currently experiencing population declines globally for a variety of reasons including pollution, lizards were chosen to be evaluated for trace element (As, Cu, Cr, Cd, Pb, and Zn) concentrations. These metals were measured within soils, invertebrate prey items, and the livers of three species of whiptail lizards (Aspidoscelis) from the un-remediated University of Texas at El Paso …

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Roles Of Oxidative Stress And Dna Methylation In Cigarette Smoking-Induced Accelerated Acute Myeloid Leukemia Progression, Mary Figueroa Aug 2022

Roles Of Oxidative Stress And Dna Methylation In Cigarette Smoking-Induced Accelerated Acute Myeloid Leukemia Progression, Mary Figueroa

Dissertations and Theses (Open Access)

Acute myeloid leukemia (AML) is a commonly diagnosed cancer in smokers. When current or former smokers have AML, they have worse survival compared to never smoking patients. This has been observed clinically for decades, but then it is unknown how smoking leads to worsened AML survival. Smoking causes oxidative stress and altered DNA methylation that persists for decades in peripheral blood mononuclear cells, but these changes from smoking have not been evaluated in the context of AML. We hypothesize that smoking-induced molecular changes, including altered DNA methylation associated with poor AML prognosis, promote AML. We developed a novel model to …

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Bioaccumulation Of As, Cd, Cr, Cu, Pb, Zn In Ambrosia Artemisiifolia L. In The Polluted Area By Enterprise For The Production And Processing Of Batteries, Ryzhenko Nataliia, El Amrani Abdelhak, Michelle Giltrap, Furong Tian, Volodymyr Laptev Jul 2022

Bioaccumulation Of As, Cd, Cr, Cu, Pb, Zn In Ambrosia Artemisiifolia L. In The Polluted Area By Enterprise For The Production And Processing Of Batteries, Ryzhenko Nataliia, El Amrani Abdelhak, Michelle Giltrap, Furong Tian, Volodymyr Laptev

Articles

In this paper, the concentration of As, Cd, Cr, Cu, Pb, Zn was investigated in soil and Ambrosia artemisiifolia L. sampling from polluted cite near the enterprises for the production and processing of batteries in the city of Dnipro in Ukraine. The obtained results of the study provided to assess plants regarding bio-monitoring and phytoremediation. Although Ambrosia artemisiifolia L. is a weed that causes serious allergic reactions in humans, this species can also have a high bioaccumulative capacity regarding metals. The metals’ concentration in roots was scientifically higher than in inflorescence part. Zn and Cu had the highest …

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Phytochemicals, Acute Toxicity And Genotoxicity Of Chewing Sticks From Zanthoxylum Zanthoxyloides Root And Distemonanthus Benthamianus Stem, Chinwe S. Alaribe, Akolade R. Oladipupo, Anjola T. Adebesin, Omolayomi Kaska, Emuejevoke T. Toye Jul 2022

Phytochemicals, Acute Toxicity And Genotoxicity Of Chewing Sticks From Zanthoxylum Zanthoxyloides Root And Distemonanthus Benthamianus Stem, Chinwe S. Alaribe, Akolade R. Oladipupo, Anjola T. Adebesin, Omolayomi Kaska, Emuejevoke T. Toye

Bulletin of Faculty of Pharmacy Cairo University

Dental caries has been reported to touch almost half of the world’s population, making it one of the most prevalent disease conditions in the world. Studies have shown that chewing sticks could be useful in cleaning of teeth and could offer protection against dental conditions, including caries. Given the increasing usage of chewing sticks and their unstandardized nature, in this study we investigated the acute toxicity, genotoxic effects on liver and kidney, and phytochemical constituents of chewing sticks from Zanthoxylum zanthoxyloides root and Distemonanthus benthamianus stem, widely used in West Africa. Chemical tests showed the presence of saponins, alkaloids, flavonoids, …

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Toxicity Assessment Of The Crude Ethanolic Pod Extract Of Swartzia Madagascariensis Desv. In Rats, Adelina A. Mwakalila, Saada M. Mbepera, Shaabani A. Mshamu, Amina Msonga, Washa B. Washa Jun 2022

Toxicity Assessment Of The Crude Ethanolic Pod Extract Of Swartzia Madagascariensis Desv. In Rats, Adelina A. Mwakalila, Saada M. Mbepera, Shaabani A. Mshamu, Amina Msonga, Washa B. Washa

Tanzania Journal of Science

This study assessed toxicity of the crude ethanolic pod extracts of Swartzia madagascariensis Desv in Wistar rats. Forty (40) Wistar rats aged 8–10 weeks were orally administered with crude extracts from pods of S. madagascariensis. Chemical analysis of serum and histopathology of liver and kidney from test animals were performed to determine the levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST), and creatinine in serum. In addition, serum albumin levels were also determined. The levels of ALT, AST and creatinine were found to be high in groups treated with crude extracts compared to the control group, suggesting some damage in …

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Corrigendum To “The Impact Of The Rare Disease And Orphan Drug Act In Taiwan” [J Food Drug Anal 29 (2021) 717-725] Jun 2022

Corrigendum To “The Impact Of The Rare Disease And Orphan Drug Act In Taiwan” [J Food Drug Anal 29 (2021) 717-725]

Journal of Food and Drug Analysis

No abstract provided.

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The Study Of Distribution Of Ingested Terbinafine On Skin With Ambient Ionization Tandem Mass Spectrometry, Yi-Tzu Cho, Hung Su, Ching-Ying Wu, Jingyueh Jeng, Chi-Wei Lee, Deng‐Chyang Wu, Tiao-Lai Huang, Jentaie Shiea Jun 2022

The Study Of Distribution Of Ingested Terbinafine On Skin With Ambient Ionization Tandem Mass Spectrometry, Yi-Tzu Cho, Hung Su, Ching-Ying Wu, Jingyueh Jeng, Chi-Wei Lee, Deng‐Chyang Wu, Tiao-Lai Huang, Jentaie Shiea

Journal of Food and Drug Analysis

We aim to develop an efficient and non-invasive strategy for monitoring of drugs and their metabolites via human skin. Probe sampling was combined with thermal desorption-electrospray ionization tandem mass spectrometry (TD-ESI/MS/MS) to characterize trace terbinafine, which was secreted on patient’s skin after ingesting terbinafine tablets. The terbinafine ion signals were directly detected in the samples collected from different skin regions and the signals were monitored for 8 weeks. The detection and location of terbinafine via the skin suggest that the methods are useful in rapidly and noninvasively collecting the molecular information of the ingested drug on skin for pharmacokinetic studies.

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Chemiluminescence Of Lucigenin-Tetracycline And Itsapplication For Sensitive Determination Of Procyanidin, Shuai Quan, Kaixiang Ji, Fangshuo Liu, Tesfaye Hailemariam Barkae, Mohamed Ibrahim Halawa, Saima Hanif, Baohua Lou, Jianping Li, Guobao Xu Jun 2022

Chemiluminescence Of Lucigenin-Tetracycline And Itsapplication For Sensitive Determination Of Procyanidin, Shuai Quan, Kaixiang Ji, Fangshuo Liu, Tesfaye Hailemariam Barkae, Mohamed Ibrahim Halawa, Saima Hanif, Baohua Lou, Jianping Li, Guobao Xu

Journal of Food and Drug Analysis

Tetracycline was reported to trigger intense lucigenin chemiluminescence (CL). Based on its significant quenching to lucigenin-tetracycline CL, procyanidin was detected. The mechanism of the lucigenin-tetracycline CL and its quenching by procyanidin were proposed. Under the optimum conditions, the calibration curve is linear in the range of 10-1000 nM for procyanidin with a detection limit of 4.4 nM. The RSD for nine replicate determinations of procyanidin was less than 1.7%. Moreover, this method was satisfactorily applied to the determination of procyanidin in human urine samples and health food capsule of grape seed.

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Quantitation Of Mycophenolic Acid And Metabolites By Uplc-Ms/Ms In Renal Transplant Patients, Yun-Fen Huang, Ya-Ching Huang, Hsiao-Chen Ning, Chia-Ni Lin Jun 2022

Quantitation Of Mycophenolic Acid And Metabolites By Uplc-Ms/Ms In Renal Transplant Patients, Yun-Fen Huang, Ya-Ching Huang, Hsiao-Chen Ning, Chia-Ni Lin

Journal of Food and Drug Analysis

Mycophenolate mofetil (MMF) and enteric-coated mycophenolate sodium (EC-MPS), specific inhibitors of lymphocyte proliferation, are commonly used as adjuvant therapy with calcineurin inhibitor agents after kidney transplantation. After administration, MMF and EC-MPS are hydrolyzed to mycophenolic acid (MPA), the active form of the drug, which must be monitored due to its narrow therapeutic window, drug–drug interactions, and large intra-and inter-individual pharmacokinetic variability despite a fixed dose. Monitoring plasma MPA level is recommended to maintain the drug within the therapeutic window, optimize its efficacy, and minimize side effects. This study aims to develop a method for quantifying MPA and its major metabolites …

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Camphorataimide B Suppresses The Metastasis Of Human Colorectal Cancer Cell By Inhibiting Smad/Fak/Akt Axis And Promoting Degradation Of Snail/Bmp4 Complex, Chi-Chou Huang, Chia-Hung Hung, Yi-Ju Lee, Tsui-Hwa Tseng, Yean-Jang Lee, Shao-Hsuan Kao, Chau-Jong Wang Jun 2022

Camphorataimide B Suppresses The Metastasis Of Human Colorectal Cancer Cell By Inhibiting Smad/Fak/Akt Axis And Promoting Degradation Of Snail/Bmp4 Complex, Chi-Chou Huang, Chia-Hung Hung, Yi-Ju Lee, Tsui-Hwa Tseng, Yean-Jang Lee, Shao-Hsuan Kao, Chau-Jong Wang

Journal of Food and Drug Analysis

Camphorataimide B (CamB) has anticancer activities against several tumors. Here, we aimed to investigate the mechanism(s) by which CamB inhibits metastasis of colorectal cancer (CRC) cells. Low-dose CamB did not affect the cell viability and cell cycle progression of CRC cells, but significantly inhibited the metastatic potentials of CRC cells. Mechanically, CamB reduced the protein and mRNA expression of BMP4, and inhibited Smad and FAK/Src/Akt signaling. CamB also decreased Snail levels by promoting its degradation via proteasome and thereafter reduced Snail-mediated BMP4 transcription. Moreover, CamB considerably inhibited the in vivo metastasis of DLD-1 cells in xenograft mice.

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Orally Delivered Perilla (Perilla Frutescens) Leaf Extract Effectively Inhibits Sars-Cov-2 Infection In A Syrian Hamster Model, Yuan-Fan Chin, Wen-Fan Tang, Yu-Hsiu Chang, Tein-Yao Chang, Wen-Chin Lin, Chia-Yi Lin, Chuen-Mi Yang, Hsueh-Ling Wu, Ping-Cheng Li, Jun-Ren Sun, Shu-Chen Hsu, Chia-Ying Lee, Hsuan-Ying Lu, Jia-Yu Chang, Jia-Rong Jheng, Cheng Cheung Chen, Jyh-Hwa Kau, Chih-Heng Huang, Cheng-Hsun Chiu, Yi-Jen Hung, Hui-Ping Tsai, Jim-Tong Horng Jun 2022

Orally Delivered Perilla (Perilla Frutescens) Leaf Extract Effectively Inhibits Sars-Cov-2 Infection In A Syrian Hamster Model, Yuan-Fan Chin, Wen-Fan Tang, Yu-Hsiu Chang, Tein-Yao Chang, Wen-Chin Lin, Chia-Yi Lin, Chuen-Mi Yang, Hsueh-Ling Wu, Ping-Cheng Li, Jun-Ren Sun, Shu-Chen Hsu, Chia-Ying Lee, Hsuan-Ying Lu, Jia-Yu Chang, Jia-Rong Jheng, Cheng Cheung Chen, Jyh-Hwa Kau, Chih-Heng Huang, Cheng-Hsun Chiu, Yi-Jen Hung, Hui-Ping Tsai, Jim-Tong Horng

Journal of Food and Drug Analysis

On analyzing the results of cell-based assays, we have previously shown that perilla (Perilla frutescens) leaf extract (PLE), a food supplement and orally deliverable traditional Chinese medicine approved by the Taiwan Food and Drug Administration, effectively inhibits SARS-CoV-2 by directly targeting virions. PLE was also found to modulate virus-induced cytokine expression levels. In this study, we explored the anti-SARS-CoV-2 activity of PLE in a hamster model by examining viral loads and virus-induced immunopathology in lung tissues. Experimental animals were intranasally challenged with different SARS-CoV-2 doses. Jugular blood samples and lung tissue specimens were obtained in the acute disease stage (3−4 …

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Assessing The Fate Of Fatty Acid Esters Of Hydroxy Fatty Acids, Diglycerides And Monoacetyldiacylglycerides In Grilled Ruminant Meats Marinated With Unfiltered Beer-Based Marinades, Charles F. Manful, Thu H. Pham, Evan Wheeler, Muhammad Nadeem, Oludoyin A. Adigun, Nicole Walsh, Raymond H. Thomas Jun 2022

Assessing The Fate Of Fatty Acid Esters Of Hydroxy Fatty Acids, Diglycerides And Monoacetyldiacylglycerides In Grilled Ruminant Meats Marinated With Unfiltered Beer-Based Marinades, Charles F. Manful, Thu H. Pham, Evan Wheeler, Muhammad Nadeem, Oludoyin A. Adigun, Nicole Walsh, Raymond H. Thomas

Journal of Food and Drug Analysis

Ruminant meats contain functional lipids including fatty acid esters of hydroxy fatty acids (FAHFA), diglycerides (DG), monoacetyldiglycerides (MAcDG) and medium chain triglycerides (McTG) whose consumption in the normal diet can confer benefits for consumer health. However, very little is known concerning how meat processing techniques such as marination and grilling affect the quantity and quality of these functional lipids in ruminant meats. We used ultra high-performance liquid chromatography coupled to high resolution accurate mass tandem mass spectrometry (UHPLC-HRAM-MS/MS) to show how grilling following marination with either India or Wheat ale unfiltered beer-based marinades affected the quantity and quality of these …

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Exosomal Proteomics In Kidney Disease: From Technical Approaches To Clinical Applications, Ageng Brahmadhi, Yung-Kun Chuang, San-Yuan Wang, Chih-Chin Kao, I-Lin Tsai Jun 2022

Exosomal Proteomics In Kidney Disease: From Technical Approaches To Clinical Applications, Ageng Brahmadhi, Yung-Kun Chuang, San-Yuan Wang, Chih-Chin Kao, I-Lin Tsai

Journal of Food and Drug Analysis

Exosomes are small extracellular vesicles (sEVs) secreted from cells and have a general diameter ranging from 30~150 nm. It was reported that exosomes have essential roles in intercellular communication and can be targeted as biomarkers of disease or as therapeutic agents. Among the different techniques used for exosome investigation, the mass spectrometry-based proteomics approach has accelerated the unraveling of the molecular composition of exosomes and has contributed to improved knowledge of molecular processes in various diseases. In this review, we focused on proteomics-based studies of exosomes and clinical applications in kidney diseases. A general introduction of exosomes, isolation and characterization …

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Differential Scanning Calorimetry For Authentication Of Edible Fats And Oils - What Can We Learn From The Past To Face The Current Challenges?, Mahbuba Islam, Liliana Bełkowska, Piotr Konieczny, Emilia Fornal, Jolanta Tomaszewska-Gras Jun 2022

Differential Scanning Calorimetry For Authentication Of Edible Fats And Oils - What Can We Learn From The Past To Face The Current Challenges?, Mahbuba Islam, Liliana Bełkowska, Piotr Konieczny, Emilia Fornal, Jolanta Tomaszewska-Gras

Journal of Food and Drug Analysis

Fats and oils authentication has become an important issue recently, due to the growing interest in consumption of cold-pressed oils. Therefore, it is becoming more and more difficult to maintain official control over the growing assortment of new cold-pressed oils. Authenticity of plant oils is also an important issue for religious or cultural reasons.This review article focuses on the application of differential scanning calorimetry (DSC) in the field of assessing authenticity of various fats and oils (e.g. olive oil, palm oil, confectionery fats, butter). Extra virgin olive oil (EVOO) is the most comprehensively tested oil by means of the DSC …

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Trends And Applications Of Food Protein-Origin Hydrolysates And Bioactive Peptides, Yi-Hsieng Samuel Wu, Yi-Chen Chen Jun 2022

Trends And Applications Of Food Protein-Origin Hydrolysates And Bioactive Peptides, Yi-Hsieng Samuel Wu, Yi-Chen Chen

Journal of Food and Drug Analysis

It was reported that protein hydrolysates or derived peptides have more functionalities than their parent protein. Most functional protein hydrolysates or peptides are identified from various food products, including plant, fish, and land-animal protein sources. Within a few decades, the application of food protein-origin functional hydrolysates or peptides could be divided into two main categories according to their applied intentions: 1) preservatives and bioactive packing materials; 2) nutraceutical ingredients. According to the literature, the applications of food protein-origin functional hydrolysates or peptides on food preservative and nutraceutical ingredients have attracted much attention. However, the approach method should be changed. Multi-activities, …

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Lc-Ms/Ms Method For The Detection And Quantification Of Pharmaceuticals And Drugs Of Abuse In New York City Waterways, Natalie M. Fernandez Jun 2022

Lc-Ms/Ms Method For The Detection And Quantification Of Pharmaceuticals And Drugs Of Abuse In New York City Waterways, Natalie M. Fernandez

Student Theses

The use of licit and illicit drugs has been increasing significantly over the past few years within the United States. Due to this increase, these drugs are emerging as contaminants in surface and ground water. The presence of pharmacologically active compounds in this environment can be extremely harmful to aquatic life as they are continuously exposed to these substances. The goal of this study was two-fold: 1) Develop and validate an analytical method for 28 different drugs including cocaine, amphetamines, opioids, cannabis, and prescription medicines, in river water; 2) Identify and quantify drugs found in New York City waterways over …

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Elisa Validation Method For The Detection Of Ketamine In Hair, Daria A. Centonza May 2022

Elisa Validation Method For The Detection Of Ketamine In Hair, Daria A. Centonza

Student Theses

An ELISA method was developed and validated to detect ketamine in human hair samples. Ketamine is an anesthetic drug that causes memory loss, dissociative sensations, and hallucinations. Due to these adverse effects, ketamine is a common drug used in drug facilitated sexual assaults (DFSAs). It is very important to be able to detect the substances used in DFSAs over a longer period of time due to the delayed reporting of these crimes. Victims, often out of fear and from the sedative/memory loss effects of the drugs, tend to report these crimes when it is too late to use urine and …

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A Detailed Parameter Study Into The Dermal Absorption Of Chemical Warfare Agents And The Effects Of Pharmacokinetics, Koko Lear May 2022

A Detailed Parameter Study Into The Dermal Absorption Of Chemical Warfare Agents And The Effects Of Pharmacokinetics, Koko Lear

Theses

Chemical warfare agents (CWAs) are substances of varying toxicity profiles. These chemicals exhibit complex dynamics and pose a serious health risk when released into the environment. A mathematical model based on Fick’s second law of diffusion was developed to comprehend how these compounds were absorbed into the skin. The analysis applied to both small and large doses and, successfully, predicted experimental results. This work also includes the effects of CWA physicochemical properties on evaporation and dermal absorption through the stratum corneum. A sensitivity analysis was conducted to assess the impacts of small variations in the initial dose, environmental conditions, and …

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Chiral Analysis Of Methamphetamine In Hair Samples, Kristen Payes May 2022

Chiral Analysis Of Methamphetamine In Hair Samples, Kristen Payes

Student Theses

Methamphetamine (MAMP) is a highly addictive illicit drug typically abused for its nervous system stimulating effects. Conversely, methamphetamine has therapeutic use treating attention deficit hyperactivity disorder, controlling appetite and assisting with weight loss, and is available as the pure l-isomer in over-the-counter (OTC) nasal inhalers due to its decongestant activity. Because l-methamphetamine (l-MAMP) is available in OTC form, forensic guidelines require a sample to contain greater than 20% d-methamphetamine (d-MAMP) when classifying results as consistent with illicit MAMP use. Chiral chromatographic analysis is capable of distinguishing between l-MAMP and d-MAMP. This …

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Toxicological Assessment Of Zinc Oxide And Titanium Dioxide On Staghorn Coral, Acropora Cervicornis, Katherine E. Meurer May 2022

Toxicological Assessment Of Zinc Oxide And Titanium Dioxide On Staghorn Coral, Acropora Cervicornis, Katherine E. Meurer

All HCAS Student Capstones, Theses, and Dissertations

Coral reefs are one of the most diverse and biologically significant ecosystems on the planet. However, anthropogenic impacts have led to a global decline in overall reef health in recent years. To address concerns that organic ultraviolet filters in sunscreen may contribute to reduced coral health, the mineral UV filters, zinc oxide (ZnO) and titanium dioxide (TiO2), have become more common in sunscreen formulas as they are often considered “reef safe” despite limited information on the toxicological effects of these compounds in corals. This study evaluated the effects of exposure to unmodified forms of zinc oxide or titanium …

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Towards The Determination Of Estrone And 17Β-Estradiol In Dairy Cattle Waste Using Solid Phase And Stir Bar Sorptive Extractions With Liquid Chromatography-Mass Spectrometry And Gas Chromatography-Mass Spectrometry, Pallavi Ragi May 2022

Towards The Determination Of Estrone And 17Β-Estradiol In Dairy Cattle Waste Using Solid Phase And Stir Bar Sorptive Extractions With Liquid Chromatography-Mass Spectrometry And Gas Chromatography-Mass Spectrometry, Pallavi Ragi

Masters Theses & Specialist Projects

Steroidal hormones are naturally produced as a part of many physiological processes and are excreted in the urine and feces of animals and humans. Farm animals in concentrated animal feeding operations (CAFOs) are routinely implanted with synthetic and natural hormones to enhance growth and production, contributing significantly to environmental steroid hormone contamination. Every year around 49 tons of estrogens are generated by livestock waste in the United States alone. Due to rainfall and runoff, these steroid hormones reach the environment when animal waste is applied as manure. Studies show that estrogens and other steroidal hormones present in the surface waters …

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