scholarly journals Detection of urinary metabolites of metabolic pathway disorders by using VTGE and LC-HRMS techniques

2019 ◽  
Author(s):  
Ajay Kumar ◽  
Jainish Kothari ◽  
Devyani Bhatkar ◽  
Manmohan Mitruka ◽  
Roshni Pal ◽  
...  
Keyword(s):  
Inborn Error ◽  
Metabolic Disorders ◽  
Metabolic Diseases ◽  
Urinary Metabolites ◽  
Vertical Tube ◽  
Detection Methods ◽  
Clinical Samples ◽  
Human Populations ◽  
Cost Issue ◽  
Analytical Tools

AbstractBackgroundIn recent, various human health disorders including cancer, diabetes, neurodegenerative and metabolic diseases are noticed among human populations. Currently, genetic and proteomic approaches are highly reported to detect metabolic disorders that also include inborn error of metabolisms. These existing detection methods are faced with cost issue and time consuming factors. Therefore, metabolites as biomarkers are one of potential avenues to detect metabolic disorders. Further, exploitation of urine as potential source of metabolite biomarkers, there are limitation in this area of research due to abundance of non-metabolite components such as proteins and nucleic acids. Hence, methods and processes are required to precisely fractionate metabolites from urine of inborn error of metabolism patients and then identified by analytical tools such as LC-HRMS and GC-MS.MethodsSterile filtered urine samples (750 µl) mixed with (250 µl) loading buffer were electrophoresed on VTGE that uses acrylamide gel (acrylamide:bisacrylamide, 30:1) as matrix of 15%. Further, vertical tube gel electrophoresis (VTGE) technique combined with LC-HR-MS to identify metabolites that are known as the biomarkers of metabolic disorders was carried out.Results and DiscussionThe authors provide evidence on the use of novel VTGE coupled with LC-HRMS to detect metabolites among metabolic disorders. Data suggest the applicability of VTGE coupled with LC-HRMS technique to detect metabolites such as 2-methyluridine, 2-Methylglutaric acid, 2-Methyl citric acid, 2-Hydroxyglutaric acid in case of metabolic disorders.ConclusionThis preliminary work is suggested to be extended to large clinical samples to validate application of this method to detect metabolic disorders including inborn error of metabolisms.

The Effects of Coenzyme Q10 Supplementation on Lipid Profiles Among Patients with Metabolic Diseases: A Systematic Review and Meta-analysis of Randomized Controlled Trials

2018 ◽  
Vol 24 (23) ◽  
pp. 2729-2742 ◽  
Author(s):  
Nasrin Sharifi ◽  
Reza Tabrizi ◽  
Mahmood Moosazadeh ◽  
Naghmeh Mirhosseini ◽  
Kamran B. Lankarani ◽  
...  
Keyword(s):  
Systematic Review ◽  
Lipid Profile ◽  
Coenzyme Q10 ◽  
Metabolic Disorders ◽  
Metabolic Diseases ◽  
Meta Analysis ◽  
Lipid Profiles ◽  
Controlled Trials ◽  
Serum Triglycerides ◽  
Coq10 Supplementation

Background and objective: Oxidative stress and inflammation are key parameters in developing metabolic disorders. Hence, antioxidant intake might be an appropriate approach. Several studies have evaluated the effect of coenzyme Q10 (CoQ10) supplementation on lipid profile among patients with metabolic diseases, though findings are controversial. The aim of this systematic review and meta-analysis was to determine the effects of CoQ10 supplementation on lipid profile in patients with metabolic disorders. Methods: We searched PubMed, EMBASE, Web of Science and Cochrane Library databases until July 2017. Prospective clinical trials were selected assessing the effect of CoQ10 supplementation on different biomarkers. Two reviewers independently assessed the eligibility of studies, extracted data, and evaluated the risk of bias of included studies. A fixed- or random-effects model was used to pool the data, which expressed as a standardized mean difference with 95% confidence interval. Heterogeneity was measured using a Q-test and with I2 statistics. Results: A total of twenty-one controlled trials (514 patients and 525 controls) were included. The meta-analysis indicated a significant reduction in serum triglycerides levels (SMD -0.28; 95% CI, -0.56, -0.005). CoQ10 supplementation also decreased total-cholesterol (SMD -0.07; 95% CI, -0.45, 0.31), increased LDL- (SMD 0.04; 95% CI, -0.27, 0.36), and HDL-cholesterol levels (SMD 0.10; 95% CI, -0.32, 0.51), not statistically significant. Conclusion: CoQ10 supplementation may significantly reduce serum triglycerides levels, and help to improve lipid profiles in patients with metabolic disorders. Additional prospective studies are recommended using higher supplementation doses and longer intervention period.

scholarly journals Prevalence of metallo-β-lactamase genes among Pseudomonas aeruginosa isolated from various clinical samples in China

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Wei Wang ◽  
Xiaoya Wang
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Antibiotic Susceptibility ◽  
Ethylenediaminetetraacetic Acid ◽  
Carbapenem Resistance ◽  
Opportunistic Pathogen ◽  
Detection Methods ◽  
Clinical Samples ◽  
Routine Practice ◽  
Carbapenem Resistant ◽  
High Prevalence

AbstractBackgroundPseudomonas aeruginosa is an opportunistic pathogen which is associated with nosocomial infections and causes various diseases including urinary tract infection, pneumonia, soft-tissue infection and sepsis. The emergence of P. aeruginosa-acquired metallo-β-lactamase (MBL) is most worrisome and poses a serious threat during treatment and infection control. The objective of this study was to identify antibiotic susceptibility, phenotypic detection of MBL production and to determine the prevalence of MBL genes in carbapenem-resistant P. aeruginosa isolated from different clinical samples.MethodsA total of 329 non-duplicate P. aeruginosa isolated from various clinical samples from two hospitals in China between September 2017 and March 2019 were included in this study. Phenotypic detection of MBL was performed by the combined detection method using imipenem and imipenem-ethylenediaminetetraacetic acid (EDTA) discs. MBL-encoding genes including blaVIM-1, blaVIM-2, blaIMP-1, blaIMP-2, blaSPM-1, blaSIM, blaNDM-1 and blaGIM were detected by polymerase chain reaction (PCR).ResultsOf the 329 P. aeruginosa, majority of the isolates were resistant to imipenem (77.5%) followed by meropenem (64.7%). Of the 270 P. aeruginosa isolates tested, 149 (55.2%) isolates were found to be positive for MBL detection. Of the different samples, 57.8% (n = 26) of P. aeruginosa isolated from blood were found to be positive for MBL production. Of the various MBL genes, blaIMP-1 (28.2%) was the most predominant gene detected followed by blaVIM-2 (18.8%), blaVIM-1 (16.1%), blaNDM-1 (9.4%), blaIMP-2 (6.7%), blaSIM (6.0%), blaSPM-1 (4.0%) and blaGIM (1.3%) genes.ConclusionsThe high resistance of P. aeruginosa toward imipenem and meropenem and the high prevalence of blaIMP-1 and blaVIM-2 set the alarm on the increasing, perhaps the increased, carbapenem resistance. In addition to routine antibiotic susceptibility testings, our results emphasize the importance of both the phenotypic and genotypic MBL detection methods in routine practice for early detection of carbapenem resistance and to prevent further dissemination of this resistant pathogen.

Inborn Errors of Metabolism

1980 ◽  
Vol 2 (6) ◽  
pp. 175-181
Author(s):  
George M. Komrower
Keyword(s):  
Neurospora Crassa ◽  
Inborn Error ◽  
Inborn Errors Of Metabolism ◽  
Metabolic Disorders ◽  
Homogentisic Acid ◽  
Turn Of The Century ◽  
Inborn Errors ◽  
The Family ◽  
The One ◽  
Biochemical Abnormalities

Around the turn of the century Garrard established the concept of an inborn error of metabolism using his study on alcaptonuria to exemplify his hypothesis that a considerable number of metabolic disorders with clearly defined clinical, pathologic, and biochemical abnormalities arise because an enzyme governing a single metabolic step is either reduced in activity or missing altogether. He pointed out the familial distribution of alcaptonuria and later showed that the inheritance could be explained on mendelian principles, ie, the affected individual was homozygous for the abnormal gene and that the inheritance was recessive, both parents being heterozygous for the disorder. He suggested that the accumulation of homogentisic acid in alcaptonuria was evidence that this substance is a normal metabolite in the degradation of tyrosine and attributed this accumulation to a failure of oxidation of homogentisic acid. In addition to alcaptonuria he described cystinunia, pentosuria, and albinism. This work was the forerunner of the classic studies of Beadle and Tatum on mutants of Neurospora crassa which led to the one gene-one enzyme concept. DETECTION Different groups require special attention: the family at risk because of previously affected individuals, those with unusual features suggestive of metabolic disorders, and sick newborns. Screening of normal newborns requires a different approach.

INHERITED METABOLIC DISORDERS AND HEART DISEASES

2019 ◽  
Author(s):  
Vjekoslav Krželj ◽  
Ivana Čulo Čagalj
Keyword(s):  
Metabolic Disorders ◽  
Metabolic Diseases ◽  
Technological Development ◽  
Heart Diseases ◽  
Glycogen Storage ◽  
Acid Oxidation ◽  
Lysosomal Storage ◽  
Glycogen Storage Diseases ◽  
Coronary Diseases ◽  
Inherited Metabolic Disorders

Inherited metabolic disorders can cause heart diseases, cardiomyopathy in particular, as well as cardiac arrhythmias, valvular and coronary diseases. More than 40 different inherited metabolic disorders can provoke cardiomyopathy, including lysosomal storage disorders, fatty acid oxidation defects, organic acidemias, amino acidopathies, glycogen storage diseases, congenital disorders of glycosylation as well as peroxisomal and mitochondrial disorders. If identified and diagnosed on time, some of congenital metabolic diseases could be successfully treated. It is important to assume them in cases when heart diseases are etiologically undefined. Rapid technological development has made it easier to establish the diagnosis of these diseases. This article will focus on common inherited metabolic disorders that cause heart diseases, as well as on diseases that might be possible to treat.

COMMITTEE ON NUTRITION

PEDIATRICS ◽  
1967 ◽  
Vol 40 (2) ◽  
pp. 289-304
Author(s):  
CHARLES U. LOWE ◽  
DAVID BAIRD COURSIN ◽  
FELIX P. HEALD ◽  
MALCOLM A. HOLLIDAY ◽  
DONOUGH O'BRIEN ◽  
...  
Keyword(s):  
Metabolic Disease ◽  
Metabolic Diseases ◽  
Dietary Treatment ◽  
Nutritional Therapy ◽  
The United States ◽  
Detection Methods ◽  
Dietary Therapy ◽  
Treatment Practices ◽  
Hereditary Metabolic Diseases ◽  
Number Of Patients

THIRTEEN YEARS AGO a dietary approach to the therapy of phenylketonuria was proposed, and data on the usefulness as well as the very real limitations of this program have accumulated in the intervening years. At the present time studies on the application of special diets for use in this disease, as well as for many other hereditary metabolic diseases, are in progress. As wider use is made of procedures for detection of hereditary metabolic disease in the newborn, an increasingly larger number of patients who may benefit from appropriate nutritional therapy will be identified very early in life. For example, calculations based on the current birth rate and apparent incidence of phenylketonuria indicate that as many as 4,000 infants with this disorder in the United States alone could require dietary therapy in the next decade. There is, therefore, a need to evaluate the principles governing nutritional management of hereditary metabolic disease in order to develop optimal treatment facilities for use in conjunction with new detection methods. It seems anomalous that comparatively little has been done either to establish good treatment practices in hereditary metabolic disease or to mobilize scientific resources to ensure an optimistic out-come for therapeutic endeavors, while so much emphasis has been placed on detection. Dietary treatment of hereditary metabolic disease is simple in theory; however, practical application may be unexpectedly difficult, or even hazardous, if not carefully supervised. It should be determined whether: (1) the untreated disease is in fact harmful, (2) the treatment is useful in preventing or reversing the unfavorable progression of the disease, (3) the therapy may be harmful by interfering with growth or development, and (4) the program may be harmful to others to whom it is inadvertently or inappropriately given.

scholarly journals Emerging Mosquito-Borne Threats and the Response from European and Eastern Mediterranean Countries

2018 ◽  
Vol 15 (12) ◽  
pp. 2775 ◽  
Author(s):  
Nicholas Johnson ◽  
Mar Fernández de Marco ◽  
Armando Giovannini ◽  
Carla Ippoliti ◽  
Maria Danzetta ◽  
...  
Keyword(s):  
At Risk ◽  
Eastern Mediterranean ◽  
Global Climate ◽  
Detection Methods ◽  
Human Populations ◽  
Tropical Regions ◽  
Mediterranean Countries ◽  
Wildlife Migration ◽  
Different Levels ◽  
Autochthonous Transmission

Mosquito-borne viruses are the cause of some of the greatest burdens to human health worldwide, particularly in tropical regions where both human populations and mosquito numbers are abundant. Due to a combination of anthropogenic change, including the effects on global climate and wildlife migration there is strong evidence that temperate regions are undergoing repeated introduction of mosquito-borne viruses and the re-emergence of viruses that previously were not detected by surveillance. In Europe, the repeated introductions of West Nile and Usutu viruses have been associated with bird migration from Africa, whereas the autochthonous transmission of chikungunya and dengue viruses has been driven by a combination of invasive mosquitoes and rapid transcontinental travel by infected humans. In addition to an increasing number of humans at risk, livestock and wildlife, are also at risk of infection and disease. This in turn can affect international trade and species diversity, respectively. Addressing these challenges requires a range of responses both at national and international level. Increasing the understanding of mosquito-borne transmission of viruses and the development of rapid detection methods and appropriate therapeutics (vaccines / antivirals) all form part of this response. The aim of this review is to consider the range of mosquito-borne viruses that threaten public health in Europe and the eastern Mediterranean, and the national response of a number of countries facing different levels of threat.

scholarly journals ANTIMICROBIAL SUSCEPTIBILITY AND DETECTION METHODS FOR THE EXTENDED‑SPECTRUM β-LACTAMASES PRODUCING ENTEROBACTERIACEAE FROM CLINICAL SAMPLES

2018 ◽  
Vol 11 (5) ◽  
pp. 139
Author(s):  
Kaviyarasan G ◽  
Rajamanikandan Kcp ◽  
Sabarimuthu M ◽  
Ramya S ◽  
Arvind Prasanth D
Keyword(s):  
Infection Control ◽  
Bacterial Infections ◽  
Control Measures ◽  
Detection Methods ◽  
Clinical Samples ◽  
Healthcare Settings ◽  
Infection Control Measures ◽  
Extended Spectrum ◽  
Drug Choice ◽  
Synergy Test

Objectives: Detection of extended-spectrum β-lactamases (ESBLs) is crucial for the infection control and antibiotic choice in healthcare settings. The aim of this study is to develop a standardized, inexpensive, and simple approach that is able to detect ESBL-producing Enterobacteriaceae isolates.Methods: Isolates those were resistant to at least one of the three indicator cephalosporins (cefotaxime, cefpodoxime, and ceftazidime) were tested for ESBL production using the double disc synergy test (DDST), combined disc synergy test (CDST) test and genotypic detection of the responsible gene for the ESBL.Result: From 64 isolates, 28 were resistant to cephalosporins. In 28 isolates, 23 were positive in CDST but in the DDST 18 were showing ESBL positive. 10 were positive in both CDST and DDST.Conclusion: Resistance to cephalosporins, which are the drug choice to treat mixed bacterial infections by the Enterobacteriaceae of which disseminate rapidly being plasmid mediated. Hence, it is necessary that rapid detection of ESBL should be done and immediate infection control measures should be implemented to prevent their dissemination.

scholarly journals Recent Developments in Plasmonic Sensors of Phenol and Its Derivatives

2021 ◽  
Vol 11 (22) ◽  
pp. 10519
Author(s):  
Nguyễn Hoàng Ly ◽  
Sang Jun Son ◽  
Ho Hyun Kim ◽  
Sang-Woo Joo
Keyword(s):  
Phenolic Compounds ◽  
Optical Sensors ◽  
Noble Metals ◽  
Raw Material ◽  
Detection Methods ◽  
Localized Surface Plasmon ◽  
Trace Detection ◽  
Toxic Response ◽  
Recent Developments ◽  
Analytical Tools

Many scientists are increasingly interested in on-site detection methods of phenol and its derivatives because these substances have been universally used as a significant raw material in the industrial manufacturing of various chemicals of antimicrobials, anti-inflammatory drugs, antioxidants, and so on. The contamination of phenolic compounds in the natural environment is a toxic response that induces harsh impacts on plants, animals, and human health. This mini-review updates recent developments and trends of novel plasmonic resonance nanomaterials, which are assisted by various optical sensors, including colorimetric, fluorescence, localized surface plasmon resonance (LSPR), and plasmon-enhanced Raman spectroscopy. These advanced and powerful analytical tools exhibit potential application for ultrahigh sensitivity, selectivity, and rapid detection of phenol and its derivatives. In this report, we mainly emphasize the recent progress and novel trends in the optical sensors of phenolic compounds. The applications of Raman technologies based on pure noble metals, hybrid nanomaterials, and metal–organic frameworks (MOFs) are presented, in which the remaining establishments and challenges are discussed and summarized to inspire the future improvement of scientific optical sensors into easy-to-operate effective platforms for the rapid and trace detection of phenol and its derivatives.

scholarly journals Ayurveda Internal Medicine for the Management of Common Metabolic Disorders W.S.R. to Madhumeha and Sthoulya

2019 ◽  
Vol 9 (5-s) ◽  
pp. 167-169
Author(s):  
Dhananjay S. Khot
Keyword(s):  
Internal Medicine ◽  
Metabolic Syndrome ◽  
Life Style ◽  
Metabolic Disorders ◽  
Dietary Habits ◽  
Metabolic Diseases ◽  
Health Issues ◽  
The Metabolic Syndrome ◽  
Sedentary Life Style

The metabolic disorders are major health issues of today’s scenario and incidences of metabolic diseases increases day by day due to the disturbed pattern of life style. Ayurveda texts have described term “Santarpanjanya Vikaras” which resembles diseases of defective tissue metabolism. Ayurveda mentioned that improper dietary habits and sedentary life style affects state of Agni which resulted Ama production and finally leading to the metabolic syndrome. The vitiation of Dosha, diminish state of Dhatu and blockage of channels, etc. also can initiate pathogenesis of metabolic disorders. The Kayachikitsa branch of Ayurveda recommended use of internal medicine for the management of various metabolic disorders. Considering increased health burden of society due to the metabolic syndrome present article explore role of ayurveda internal medicine for the management of metabolic syndrome. Keywords: Ayurveda, metabolic syndrome, Santarpanjanya, Madhumeha and Sthoulya.       

scholarly journals Multiplexed Detection of Sepsis Markers in Whole Blood using Nanocomposite Coated Electrochemical Sensors

2020 ◽  
Author(s):  
Uroš Zupančič ◽  
Pawan Jolly ◽  
Pedro Estrela ◽  
Despina Moschou ◽  
Donald E. Ingber
Keyword(s):  
Electrochemical Detection ◽  
Whole Blood ◽  
Electrochemical Sensors ◽  
Point Of Care ◽  
Sample Volume ◽  
Nanocomposite Coating ◽  
Cross Reactivity ◽  
Detection Methods ◽  
Clinical Samples ◽  
Undiluted Serum

ABSTRACTSepsis is a leading cause of mortality worldwide that is difficult to diagnose and manage because this requires simultaneous analysis of multiple biomarkers. Electrochemical detection methods could potentially provide a way to accurately quantify multiple sepsis biomarkers in a multiplexed manner as they have very low limits of detection and require minimal sensor instrumentation; however, affinity-based electrochemical sensors are usually hampered by biological fouling. Here we describe development of an electrochemical detection platform that enables detection of multiple sepsis biomarkers simultaneously by incorporating a recently developed nanocomposite coating composed of crosslinked bovine serum albumin containing a network of reduced graphene oxide nanoparticles that prevents biofouling. Using nanocomposite coated planar gold electrodes, we constructed a procalcitonin sensor and demonstrated sensitive PCT detection in undiluted serum and clinical samples, as well as excellent correlation with a conventional ELISA (adjusted r2 = 0.95). Sensors for two additional sepsis biomarkers — C-reactive protein and pathogen-associated molecular patterns — were developed on the same multiplexed platform and tested in whole blood. Due to the excellent antifouling properties of the nanocomposite coating, all three sensors exhibited specific responses within the clinically significant range without any cross-reactivity in the same channel with low sample volume. This platform enables sensitive simultaneous electrochemical detection of multiple analytes in human whole blood, which can be expanded further to any target analyte with an appropriate antibody pair or capturing probe, and thus, may offer a potentially valuable tool for development of clinical point-of-care diagnostics.GRAPHICAL ABSTRACT

Sign in / Sign up

Export Citation Format

Share Document