scholarly journals An NMR-based metabolomic approach to the analysis of the effects of xenobiotics on endogenous metabolite levels in plants

2004 ◽  
Vol 18 (2) ◽  
pp. 279-287 ◽  
Author(s):  
Nigel J. C. Bailey ◽  
Matjaz Oven ◽  
Elaine Holmes ◽  
Meinhart H. Zenk ◽  
Jeremy K. Nicholson
Keyword(s):  
Genetic Factors ◽  
Cobalt Chloride ◽  
Suspension Cell Culture ◽  
Data Filtering ◽  
H Nmr ◽  
Biochemical Status ◽  
Type Data ◽  
Branched Chain ◽  
Extraneous Data ◽  
Metabolomic Approach

High field1H NMR spectroscopy has been employed to obtain, in conjunction with chemometric analysis, information regarding fluctuations in endogenous metabolic profiles forCrotalaria cobalticolaplant cells following exposure to cobalt chloride.Such ‘metabolomic’ type data analysis is often confounded by experimental, environmental or genetic factors that are not correlated to the classifications of interest and serve only to complicate the extraction of meaningful answers from a dataset. This work demonstrates the application of data filtering to remove extraneous data that result from spectrometer variation rather than being correlated with the classes of interest. Samples were analysed fromCrotalaria cobalticolasuspension cell culture following exposure to cobalt chloride using 2 spectrometers. Removal of confounding data due to spectrometer variation resulted in clear separation between control and dosed classes. It was then possible to use the model to determine key changes in biochemical status caused as a result of exposure to cobalt. Branched chain amino acids, succinate and secondary metabolite precursors phenylalanine and tyrosine were all higher in the control samples, whilst choline, glutamate, alanine and lactate were higher in the dosed samples.

scholarly journals Effect of Xueniao Capsule on Escherichia coli-Induced Acute Pyelonephritis Rats by 1H NMR-Based Metabolomic Approach

2019 ◽  
Vol 2019 ◽  
pp. 1-12
Author(s):  
Xuliang Hao ◽  
Pan He ◽  
Yan Ni ◽  
Jing Yao ◽  
Yankun Yang ◽  
...  
Keyword(s):  
Chemical Analysis ◽  
Acute Pyelonephritis ◽  
Bacterial Count ◽  
Action Mechanism ◽  
Chemical Difference ◽  
Future Studies ◽  
H Nmr ◽  
Multiple Components ◽  
Endogenous Metabolites ◽  
Metabolomic Approach

Xueniao capsule, one of the famous traditional Chinese medicine (TCM) formulas, has been proved to be effective for treating acute pyelonephritis (APN) in the clinic. However, the probable mechanisms are still unclear. This study was aimed at investigating the therapeutic effect and action mechanism of Xueniao capsule on acute pyelonephritis rats. Chemical analysis of Xueniao capsule and four different extracts was conducted by HPLC and GC-MS. 21 compounds were identified in the Xueniao capsule, and obvious chemical difference was also revealed among the different extracts by chemical analysis. Metabolomics, combined with bacteriological examination, traditional histopathology, and biochemical parameters, was used to evaluate the effects of Xueniao capsule and four different extracts. After treatment with Xueniao capsule, the bacterial count of urine was decreased and the renal lesions of APN rats were ameliorated by histopathology inspection. Levels of Scr and Ucr, IL-1α, IL-1β, IL-6, IL-10, CXCL-2, and MCP-1 were decreased significantly, and the reserving effect of Xueniao capsule was superior to the different extracts and norfloxacin. 16 endogenous metabolites related to APN model were revealed, and 12 of them could be reversed by the Xueniao capsule. 1H NMR metabolomic results demonstrated that the formula of Xueniao capsule played the best therapeutic role on APN through regulating energy metabolism and alterations of osmotic pressure. The effect of Xueniao capsule on the APN was the synergistic actions of multiple components, which need to be further investigated in future studies.

scholarly journals Metabolic Heterogeneity in Polycystic Ovary Syndrome Is Determined by Obesity: Plasma Metabolomic Approach Using GC-MS

2012 ◽  
Vol 58 (6) ◽  
pp. 999-1009 ◽  
Author(s):  
Héctor F Escobar-Morreale ◽  
Sara Samino ◽  
María Insenser ◽  
María Vinaixa ◽  
Manuel Luque-Ramírez ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Polycystic Ovary Syndrome ◽  
Polycystic Ovary ◽  
Ovary Syndrome ◽  
Peripheral Tissues ◽  
Insulin Resistant ◽  
Branched Chain ◽  
Metabolic Heterogeneity ◽  
Nonobese Patients ◽  
Metabolomic Approach

Abstract BACKGROUND Abdominal adiposity and obesity influence the association of polycystic ovary syndrome (PCOS) with insulin resistance and diabetes. We aimed to characterize the intermediate metabolism phenotypes associated with PCOS and obesity. METHODS We applied a nontargeted GC-MS metabolomic approach to plasma samples from 36 patients with PCOS and 39 control women without androgen excess, matched for age, body mass index, and frequency of obesity. RESULTS Patients with PCOS were hyperinsulinemic and insulin resistant compared with the controls. The increase in plasma long-chain fatty acids, such as linoleic and oleic acid, and glycerol in the obese patients with PCOS suggests increased lipolysis, possibly secondary to impaired insulin action at adipose tissue. Conversely, nonobese patients with PCOS showed a metabolic profile consisting of suppression of lipolysis and increased glucose utilization (increased lactic acid concentrations) in peripheral tissues, and PCOS patients as a whole showed decreased 2-ketoisocaproic and alanine concentrations, suggesting utilization of branched-chain amino acids for protein synthesis and not for gluconeogenesis. These metabolic processes required effective insulin signaling; therefore, insulin resistance was not universal in all tissues of these women, and different mechanisms possibly contributed to their hyperinsulinemia. PCOS was also associated with decreased α-tocopherol and cholesterol concentrations irrespective of obesity. CONCLUSIONS Substantial metabolic heterogeneity, strongly influenced by obesity, underlies PCOS. The possibility that hyperinsulinemia may occur in the absence of universal insulin resistance in nonobese women with PCOS should be considered when designing diagnostic and therapeutic strategies for the management of this prevalent disorder.

scholarly journals Infant urinary metabolomic profile in a fatal acute methadone intoxication

2022 ◽  
Author(s):  
Alberto Chighine ◽  
Michele Porcu ◽  
Giulio Ferino ◽  
Nicola Lenigno ◽  
Claudia Trignano ◽  
...  
Keyword(s):  
Perinatal Asphyxia ◽  
Sudden Infant Death ◽  
Sudden Infant ◽  
Metabolomic Profile ◽  
Metabolic Derangement ◽  
Additional Information ◽  
H Nmr ◽  
Healthy Control ◽  
Urinary Sample ◽  
Metabolomic Approach

AbstractA case report suspicious for a Sudden Infant Death Syndrome is here described. Pathological findings were consistent with an acute respiratory failure while toxicological analysis revealed an elevated blood methadone concentration. Death was then ascribed to an acute methadone intoxication. In addition to the routinary approach, the urinary sample collected at autopsy was investigated with a 1H NMR metabolomic approach and the identified metabolomic profile was challenged with the urinary metabolomic profiles previously obtained from 10 newborns who experienced perinatal asphyxia and 16 healthy control newborns. Intriguingly, the urinary profile of the methadone intoxicated infant was very similar to those belonging to the perinatal asphyxia newborns, especially to those belonging to the newborns characterised by the worst outcome. The results offer several hints on a shared metabolic derangement between different mechanisms of asphyxia/hypoxia. To the best of the authors’ knowledge, this is the first report of the use of a metabolomic approach in a pathological case, in which metabolomics offers useful additional information regarding the mechanism and the cause of death.

Regulation on BCAAs catabolism pathway plays the key role in cyclophosphamide-induced leucopenia BALB/c mice after the treatment of a typical Traditional Chinese Medicine of Lvjiao Buxue Granules

2020 ◽  
Author(s):  
Jun-sheng Tian ◽  
Hui-liang Zhao ◽  
Qi Wang ◽  
Huan Xiang ◽  
Xiang-ping Xu ◽  
...  
Keyword(s):  
Cancer Chemotherapy ◽  
Blood Cells ◽  
White Blood Cells ◽  
Degradation Pathway ◽  
Integrated Analysis ◽  
Nmr Metabolomics ◽  
Biological Targets ◽  
H Nmr ◽  
Branched Chain ◽  
Endogenous Metabolites

Abstract Background: Cyclophosphamide is a common tumor chemotherapy drug used to treat various cancers, but the resulting immunosuppression leads to leukopenia, which is a serious limiting factor in clinical application. Therefore, the introduction of immunomodulators as adjuvant therapy may help to reduce the hematological side effects of cyclophosphamide. Lvjiao Buxue Granules has been widely used in clinical treatment of gynecological diseases such as anemia and irregular menstruation, and recently, it has been found to increase the role of white blood cells, but its mechanism of action is still unclear. In this research, we applied the 1H-NMR metabolomics approach to characterize metabolites in cyclophosphamide-induced leucopenia mice spleen, so as to fully understand the metabolic processes of leucopenia and improve the leukocyte function of Lvjiao Buxue Granules.Methods: Cyclophosphamide was used to establish the leucopenia mice with cancer chemotherapy and the content of white blood cells, red blood cells, hemoglobin, platelets, and other routine blood indexes were measured. The changes of endogenous metabolites in spleen analyzed by 1H-NMR metabolomics technique were investigated the regulation effect of LBG in mice with leukopenia. Afterward, the chemical components-targets-differential metabolites network of Lvjiao Buxue Granules was constructed by the use of biological targets network, thus leucopenia-relevant metabolism pathways were dissected. Results: The blood routine parameters and organ indexes levels of leucopenia mice with cancer chemotherapy were improved by Lvjiao Buxue Granules. The metabolomic study revealed that 15 endogenous metabolites in mice spleen were considered as potential biomarkers of Lvjiao Buxue Granules for its protective effect. Integrated analysis of metabolomics and biological targets network indicated that Lvjiao Buxue Granules exerted the leukocyte elevation activity by inhibiting the branched-chain amino acids (BCAAs) degradation pathway and increasing the levels of valine, leucine and isoleucine. Conclusion: Lvjiao Buxue Granules exert obvious efficacy on the mice model of leucopenia, which could be improved by regulating the branched-chain amino acid degradation pathway and the levels of valine, leucine and isoleucine.

scholarly journals Monitoring the Modifications of the Vitreous Humor Metabolite Profile after Death: An Animal Model

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Maria Francesca Rosa ◽  
Paola Scano ◽  
Antonio Noto ◽  
Matteo Nioi ◽  
Roberta Sanna ◽  
...  
Keyword(s):  
Principal Component ◽  
Metabolite Profile ◽  
Vitreous Humor ◽  
Multivariate Statistical ◽  
H Nmr ◽  
Multivariate Statistical Approach ◽  
Compositional Changes ◽  
Latent Structures ◽  
Metabolomic Approach

We applied a metabolomic approach to monitor the modifications occurring in goat vitreous humor (VH) metabolite composition at different times (0, 6, 12, 18, and 24 hours) after death. The1H-NMR analysis of the VH samples was performed for the simultaneous determination of several metabolites (i.e., the metabolite profile) representative of the VHstatusat different times. Spectral data were analyzed by Principal Component Analysis (PCA) and by Orthogonal Projection to Latent Structures (OPLS) regression technique. PCA and OPLS suggested that different spectral regions were involved in time-related changes. The major time-related compositional changes, here detected, were the increase of lactate, hypoxanthine, alanine, total glutathione, choline/phosphocholine, creatine, andmyo-inositol and the decrease of glucose and 3-hydroxybutyrate. We attempted a speculative interpretation of the biological mechanisms underlying these changes. These results show that multivariate statistical approach, based on1H NMR metabolite profiling, is a powerful tool for detecting ongoing differences in VH composition and may be applied to investigate several physiological and pathological conditions.

scholarly journals Characterization of Metabolites in Plasma, Urine and Feces of Healthy Participants after Taking Brahmi Essence for Twelve Weeks Using LC-ESI-QTOF-MS Metabolomic Approach

Molecules ◽  
2021 ◽  
Vol 26 (10) ◽  
pp. 2944
Author(s):  
Genet Minale ◽  
Tongchai Saesong ◽  
Prapapan Temkitthawon ◽  
Neti Waranuch ◽  
Nitra Nuengchamnong ◽  
...  
Keyword(s):  
Amino Acids ◽  
Aromatic Amino Acids ◽  
Online Database ◽  
Branched Chain Amino Acid ◽  
Three Samples ◽  
Branched Chain ◽  
Mulberry Juice ◽  
Healthy Participants ◽  
Metabolomic Approach

Brahmi essence, developed from Bacopa monnieri (L.) Wettst. standardized extract and mulberry juice, was proven to improve the memory speed of healthy participants aged 55–80 years old, following a 12-week dietary program. However, the metabolites have not yet been reported. Our objective was to characterize the altered metabolites in the plasma, urine, and feces of healthy volunteers after consumption of Brahmi essence for 12 weeks, using the LC-MS metabolomics approach. The altered metabolites were selected from OPLS-DA S-plots; 15 metabolites in the plasma, 7 in the urine, and 17 in the feces samples were tentatively identified by comparison with an online database and literature. The metabolites in the plasma samples were in the classes of amino acids, acylcarnitine, and phospholipids. Benzeneactamide-4-O-sulphate and 3-hydroxyhippuric acid were found in urine samples. The metabolites in the class of amino acids, together with jujubogenin and pseudojujubogenin, were identified in the fecal samples. The aminoacyl-tRNA, aromatic amino acids, and branched-chain amino acid biosynthetic pathways were mainly related to the identified metabolites in all three samples. It could be implied that those metabolites and their pathways might be linked with the effect of Brahmi essence on memory speed.

NMR based metabolomic approach revealed cyclophosphamide-induced systematic alterations in a rat model

RSC Advances ◽  
2016 ◽  
Vol 6 (112) ◽  
pp. 111020-111030 ◽  
Author(s):  
Tingli Qu ◽  
Erbing Wang ◽  
Aiping Li ◽  
GuanHua Du ◽  
Zhenyu Li ◽  
...  
Keyword(s):  
Rat Model ◽  
Biochemical Assay ◽  
H Nmr ◽  
Metabolomic Approach

A 1H NMR based metabolomics approach combined with biochemical assay had been employed to study the toxicity of CY.

scholarly journals Metabolic Fingerprint of Acromegaly and its Potential Usefulness in Clinical Practice

2019 ◽  
Vol 8 (10) ◽  
pp. 1549 ◽  
Author(s):  
Biagetti ◽  
Herance ◽  
Ferrer ◽  
Aulinas ◽  
Palomino-Schätzlein ◽  
...  
Keyword(s):  
Clinical Course ◽  
Serum Levels ◽  
Therapeutic Strategies ◽  
Control Group ◽  
Metabolic Fingerprint ◽  
Close Relationship ◽  
Low Levels ◽  
Branched Chain ◽  
Metabolomic Approach ◽  
Active Disease

Insulin-like growth factor-1 (IGF-1) and growth hormone (GH) levels are the main targets for monitoring acromegaly activity, but they are not in close relationship with the clinical course of the disease and the associated comorbidities. The present study was aimed at identifying metabolites that could be used as biomarkers for a better disease phenotyping. For this purpose, metabolic fingerprint using an untargeted metabolomic approach was examined in serum from 30 patients with acromegaly and 30 age-matched controls. Patients with acromegaly presented fewer branched-chain amino acids (BCAAs) compared to the control group (valine: 4.75 ± 0.87 vs. 5.20 ± 1.06 arbitrary units (AUs), p < 0.05; isoleucine: 2.54 ± 0.41 vs. 2.80 ± 0.51 AUs; p < 0.05). BCAAs were also lower in patients with active disease compared to patients with normal levels of IGF-1 with or without medical treatment. GH, but not IGF-1, serum levels were inversely correlated with both valine and isoleucine. These findings indicate that low levels of BCAAs represent the main metabolic fingerprint of acromegaly and that GH, rather than IGF-1, might be the primary mediator. In addition, our results suggest that the assessment of BCAAs could help to identify active disease and to monitor the response to therapeutic strategies.

scholarly journals Independent and Opposite Associations Between Branched-Chain Amino Acids and Lysophosphatidylcholines With Incident Diabetes in Thais

Metabolites ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 76
Author(s):  
La-or Chailurkit ◽  
Nitchawat Paiyabhroma ◽  
Piyamit Sritara ◽  
Prin Vathesatogkit ◽  
Sukit Yamwong ◽  
...  
Keyword(s):  
Amino Acids ◽  
Robust Regression ◽  
Branched Chain Amino Acids ◽  
Incident Diabetes ◽  
Targeted Metabolomics ◽  
Chromatography Tandem Mass Spectrometry ◽  
Liquid Chromatography Tandem Mass ◽  
Branched Chain ◽  
Conventional Risk Factors ◽  
Metabolomic Approach

Branched-chain amino acids (BCAAs) and lysophosphatidylcholines (LPCs) have been reported to be associated with diabetes. The purpose of the present study was to investigate the relative contributions of BCAAs and LPCs to the progression of prediabetes to diabetes using a targeted metabolomic approach. This study was part of a health survey of employees of the Electricity Generating Authority of Thailand (n = 79; nine females and 70 males). A targeted metabolomics analysis was performed using an AbsoluteIDQ® p180 kit, flow injection analysis, and liquid chromatography-tandem mass spectrometry. The highest variable importance in projection (VIP) scores for the progression to diabetes of the amino acids and phospholipids were associated with isoleucine and LPC acyl C28:1, respectively. Using logistic regression analysis, we found that high baseline isoleucine concentration was associated with a higher incidence of diabetes, while high LPC acyl 28:1 was associated with a lower incidence. Isoleucine and LPC acyl 28:1 were independently associated with incident diabetes in a model that also included conventional risk factors for diabetes (baseline fasting plasma glucose (FPG), age, sex, and body mass index (BMI)). In addition, isoleucine and LPC acyl 28:1 were independently associated with serum HbA1c 5 years later in a robust regression model that also included baseline FPG, age, sex, and BMI. Isoleucine, LPC acyl 28:1, age, and FPG were significantly associated with HbA1c at this time. In conclusion, these results provide evidence that isoleucine and LPC acyl C28:1 have respective positive and negative independent associations with incident diabetes.

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