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A rare and severe lichenoid skin eruption after apalutamide treatment for prostate cancer. Ann Dermatol Venereol 2023; 150:310-311. [PMID: 37903707 DOI: 10.1016/j.annder.2023.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 06/14/2023] [Accepted: 09/05/2023] [Indexed: 11/01/2023]
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The Lysosomal Calcium Channel TRPML1 Maintains Mitochondrial Fitness in NK Cells through Interorganelle Cross-Talk. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2023; 211:1348-1358. [PMID: 37737664 PMCID: PMC10579149 DOI: 10.4049/jimmunol.2300406] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 08/18/2023] [Indexed: 09/23/2023]
Abstract
Cytotoxic lymphocytes eliminate cancer cells through the release of lytic granules, a specialized form of secretory lysosomes. This compartment is part of the pleomorphic endolysosomal system and is distinguished by its highly dynamic Ca2+ signaling machinery. Several transient receptor potential (TRP) calcium channels play essential roles in endolysosomal Ca2+ signaling and ensure the proper function of these organelles. In this study, we examined the role of TRPML1 (TRP cation channel, mucolipin subfamily, member 1) in regulating the homeostasis of secretory lysosomes and their cross-talk with mitochondria in human NK cells. We found that genetic deletion of TRPML1, which localizes to lysosomes in NK cells, led to mitochondrial fragmentation with evidence of collapsed mitochondrial cristae. Consequently, TRPML1-/- NK92 (NK92ML1-/-) displayed loss of mitochondrial membrane potential, increased reactive oxygen species stress, reduced ATP production, and compromised respiratory capacity. Using sensitive organelle-specific probes, we observed that mitochondria in NK92ML1-/- cells exhibited evidence of Ca2+ overload. Moreover, pharmacological activation of the TRPML1 channel in primary NK cells resulted in upregulation of LC3-II, whereas genetic deletion impeded autophagic flux and increased accumulation of dysfunctional mitochondria. Thus, TRPML1 impacts autophagy and clearance of damaged mitochondria. Taken together, these results suggest that an intimate interorganelle communication in NK cells is orchestrated by the lysosomal Ca2+ channel TRPML1.
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Adaptive single-KIR +NKG2C + NK cells expanded from select superdonors show potent missing-self reactivity and efficiently control HLA-mismatched acute myeloid leukemia. J Immunother Cancer 2022; 10:jitc-2022-005577. [PMID: 36319065 PMCID: PMC9628692 DOI: 10.1136/jitc-2022-005577] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/24/2022] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Natural killer (NK) cells hold great promise as a source for allogeneic cell therapy against hematological malignancies, including acute myeloid leukemia (AML). Current treatments are hampered by variability in NK cell subset responses, a limitation which could be circumvented by specific expansion of highly potent single killer immunoglobulin-like receptor (KIR)+NKG2C+ adaptive NK cells to maximize missing-self reactivity. METHODS We developed a GMP-compliant protocol to expand adaptive NK cells from cryopreserved cells derived from select third-party superdonors, that is, donors harboring large adaptive NK cell subsets with desired KIR specificities at baseline. We studied the adaptive state of the cell product (ADAPT-NK) by flow cytometry and mass cytometry as well as cellular indexing of transcriptomes and epitopes by sequencing (CITE-Seq). We investigated the functional responses of ADAPT-NK cells against a wide range of tumor target cell lines and primary AML samples using flow cytometry and IncuCyte as well as in a mouse model of AML. RESULTS ADAPT-NK cells were >90% pure with a homogeneous expression of a single self-HLA specific KIR and expanded a median of 470-fold. The ADAPT-NK cells largely retained their adaptive transcriptional signature with activation of effector programs without signs of exhaustion. ADAPT-NK cells showed high degranulation capacity and efficient killing of HLA-C/KIR mismatched tumor cell lines as well as primary leukemic blasts from AML patients. Finally, the expanded adaptive NK cells had preserved robust antibody-dependent cellular cytotoxicity potential and combination of ADAPT-NK cells with an anti-CD16/IL-15/anti-CD33 tri-specific engager led to near-complete killing of resistant CD45dim blast subtypes. CONCLUSIONS These preclinical data demonstrate the feasibility of off-the-shelf therapy with a non-engineered, yet highly specific, NK cell population with full missing-self recognition capability.
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Perimembranous ventricular septal defect with left ventricular volume overload: Features of patients in the French Cohort Study (FRANCISCO). ARCHIVES OF CARDIOVASCULAR DISEASES SUPPLEMENTS 2022. [DOI: 10.1016/j.acvdsp.2022.07.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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5
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Fetal screening and prevention of autoimmune heart block: What about the French cardiofetalist practice? ARCHIVES OF CARDIOVASCULAR DISEASES SUPPLEMENTS 2022. [DOI: 10.1016/j.acvdsp.2022.07.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Assessment of left ventricular dyssynchrony by speckle tracking echocardiography in children with Duchenne muscular dystrophy. ARCHIVES OF CARDIOVASCULAR DISEASES SUPPLEMENTS 2022. [DOI: 10.1016/j.acvdsp.2021.09.114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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1715P Rapid drug desensitization (RDD) to anticancer drugs: A 4-year monocentric experience. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Toward the Interpretation of Positive Testing for Fentanyl and Its Analogs in Real Hair Samples: Preliminary Considerations. J Anal Toxicol 2020; 44:362-369. [PMID: 31776578 DOI: 10.1093/jat/bkz102] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 11/01/2019] [Accepted: 11/12/2019] [Indexed: 11/14/2022] Open
Abstract
The detection of new psychoactive substances (NPS) in hair has become extensively researched in recent years. Although most NPS fall into the classes of synthetic cannabinoids and designer cathinones, novel synthetic opioids (NSO) have appeared with increasing frequency in the illicit drug supply. While the detection of NSO in hair is now well documented, interpretation of results presents several controversial issues, as is quite common in hair analysis. In this study, an ultra-high-performance liquid chromatography-tandem mass spectrometry method able to detect 13 synthetic opioids (including fentanyl analogs) and metabolites in hair was applied to 293 real samples. Samples were collected in the USA between November 2016 and August 2018 from subjects who had reported heroin use in the past year or had already tested positive to hair testing for common opiates. The range, mean and median concentrations were calculated for each analyte, in order to draw a preliminary direction for a possible cut-off to discriminate between exposure to either low or high quantities of the drug. Over two-thirds (68%) of samples tested positive for fentanyl at concentrations between LOQ and 8600 pg/mg. The mean value was 382 pg/mg and the median was 95 pg/mg. The metabolites norfentanyl and 4-ANPP were also quantified and were found between LOQ and 320 pg/mg and between LOQ and 1400 pg/mg, respectively. The concentration ratios norfentanyl/fentanyl, 4-ANPP/fentanyl and norfentanyl/4-ANPP were also tested as potential markers of active use and to discriminate the intake of fentanyl from other analogs. The common occurrence of samples positive for multiple drugs may suggest that use is equally prevalent among consumers, which is not the case, as correlations based on quantitative results demonstrated. We believe this set of experimental observations provides a useful starting point for a wide discussion aimed to better understand positive hair testing for fentanyl and its analogs in hair samples.
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Effective validation of chromatographic analytical methods: The illustrative case of androgenic steroids. Talanta 2020; 215:120867. [DOI: 10.1016/j.talanta.2020.120867] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 02/23/2020] [Accepted: 02/24/2020] [Indexed: 12/16/2022]
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Interpretation of hair analysis for fentanyl and analogues. TOXICOLOGIE ANALYTIQUE ET CLINIQUE 2019. [DOI: 10.1016/j.toxac.2019.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Speckle tracking echocardiography in children with Duchenne muscular dystrophy: A multicenter controlled cross-sectional study. ARCHIVES OF CARDIOVASCULAR DISEASES SUPPLEMENTS 2019. [DOI: 10.1016/j.acvdsp.2018.10.126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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DNA mixtures interpretation – A proof-of-concept multi-software comparison highlighting different probabilistic methods’ performances on challenging samples. Forensic Sci Int Genet 2018; 37:143-150. [DOI: 10.1016/j.fsigen.2018.08.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 07/22/2018] [Accepted: 08/02/2018] [Indexed: 01/20/2023]
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Occupational Exposure to Alcohol-Based Hand Sanitizers: The Diagnostic Role of Alcohol Biomarkers in Hair. J Anal Toxicol 2018; 42:157-162. [PMID: 29206963 DOI: 10.1093/jat/bkx094] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 11/16/2017] [Indexed: 01/19/2023] Open
Abstract
Ethyl glucuronide (EtG) and fatty acid ethyl esters (FAEEs) in hair are effective direct biomarkers of ethanol ingestion, whose analytical determination can be used to discriminate between chronic and occasional ethanol intake. Ethanol is a compound widely used in some workplaces (e.g., clinics, hospitals) and is present in considerable amounts in mouthwash for oral cleaning, medications, cosmetic products, hydro-alcoholic disinfectants and antiseptics for hands. This study examined the ethyl alcohol exposure derived from hand disinfectants (in gel form) by simulating the typical occupational situation of medical-health workers (healthcare workers, nurses, surgeons, etc.) who frequently wash their hands with antiseptic sanitizer. Two types of hand disinfectants with 62% w/w of ethanol content were daily applied to the hands of a teetotaler for 20 times a day, for 4 consecutive weeks, thus simulating a typical workplace situation and a cumulative dermal exposure to ethanol of ~1,100 g. Different matrices (head, chest and beard hair, urine) were regularly sampled and analyzed using a ultra high-performance liquid chromatography tandem massspectrometry validated method for EtG and a (HS)SPME-GC-MS validated technique for FAEEs. The data obtained showed that a significant dermal absorption and/or inhalation of ethanol occurred, and that the use of detergents produce urinary EtG concentrations both higher than the cut-offs normally used for clinical and forensic analyses (either 100 and 500 ng/mL, depending on the context). The concentrations of the ethanol metabolites in the keratin matrices were, respectively, below the cut-off of 7 pg/mg for EtG and below 0.5 ng/mg for FAAEs (0.35 ng/mg for ethyl palmitate). In conclusion, the regular use of alcohol-based hand sanitizers can affect the concentration of urinary EtG and lead to positive analytical results, particularly when specimens are obtained shortly after sustained use of ethanol-containing hand sanitizer. On the other hand, direct biomarkers of alcohol abuse in the keratin matrix are capable of distinguishing between ethanol consumption and incidental exposures.
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Endoductal Tissue Sampling of Biliary Strictures through Endoscopic Retrograde Cholangiopan Creatography (ERCP). TUMORI JOURNAL 2018; 83:698-702. [PMID: 9267491 DOI: 10.1177/030089169708300314] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Aim and background Pathological proof of malignant in biliary strictures is useful in the preoperative setting as it helps define therapeutic planning and prognosis, and reduces the length of the subsequent surgical intervention. However, it is difficult to obtain. The aim of this study was to evaluate the yield of histological and cytological examination of endobiliary samples obtained during endoscopic retrograde cholangiopancreatography (ERCP). Methods Endobiliary forceps biopsy and brush cytology were performed during ERCP examination in 52 consecutive patients, 36 with malignant and 16 with benign strictures. Results Histology and cytology turned out to have the same sensitivity (53%). The gain in sensitivity achieved by combining the two techniques was limited, reaching a value of 61%. The specificity, however, was 100% for both methods. Most of the few complications observed were due to sphincterotomy and subsided spontaneously or with medical treatment. However, one patient experienced a serious complication and chose to be treated by surgical intervention. The complication was caused by forceps biopsy. Conclusions This study shows that 1) sampling of biliary strictures during ERCP is the primary approach to tissue diagnosis; 2) brush cytology alone is sufficient in clinical practice; 3) forceps biopsy must always be used to sample intra-ampullary strictures but should be considered as a secondary step to sample strictures located more proximally, in the bile ducts, if previous cytology was negative.
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Echocardiographic right ventricular function reference values in pediatrics: Which is the best mathematical model to define Z-scores? ARCHIVES OF CARDIOVASCULAR DISEASES SUPPLEMENTS 2018. [DOI: 10.1016/j.acvdsp.2018.02.173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Speckle tracking analysis with the two main ultrasound software in pediatrics: Comparison between QLAB by Philips Healthcare and EchoPac by General Electric Healthcare. ARCHIVES OF CARDIOVASCULAR DISEASES SUPPLEMENTS 2018. [DOI: 10.1016/j.acvdsp.2017.11.340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Echocardiographic right ventricular function reference values in pediatrics: Which is the best mathematical model to define Z-Scores? ARCHIVES OF CARDIOVASCULAR DISEASES SUPPLEMENTS 2018. [DOI: 10.1016/j.acvdsp.2017.11.312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Development and validation of a Partial Least Squares-Discriminant Analysis (PLS-DA) model based on the determination of ethyl glucuronide (EtG) and fatty acid ethyl esters (FAEEs) in hair for the diagnosis of chronic alcohol abuse. Forensic Sci Int 2018; 282:221-230. [DOI: 10.1016/j.forsciint.2017.11.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 11/05/2017] [Accepted: 11/07/2017] [Indexed: 01/09/2023]
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Cardiopulmonary exercise test among children with congenital heart diseases: a multicenter study. ARCHIVES OF CARDIOVASCULAR DISEASES SUPPLEMENTS 2017. [DOI: 10.1016/s1878-6480(17)30339-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Cardiopulmonary exercise test in children with congenital heart diseases: correlation between ventilatory parameters and maximum oxygen uptake. ARCHIVES OF CARDIOVASCULAR DISEASES SUPPLEMENTS 2016. [DOI: 10.1016/s1878-6480(16)30548-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Cardiopulmonary exercise test among children with congenital heart diseases: a multicenter study. ARCHIVES OF CARDIOVASCULAR DISEASES SUPPLEMENTS 2016. [DOI: 10.1016/s1878-6480(16)30570-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Effects of various sample pretreatment procedures on ethyl glucuronide quantification in hair samples: Comparison of positivity rates and appraisal of cut-off values. Forensic Sci Int 2016; 267:60-65. [PMID: 27552703 DOI: 10.1016/j.forsciint.2016.08.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 07/26/2016] [Accepted: 08/04/2016] [Indexed: 01/01/2023]
Abstract
The quantification of ethylglucuronide (EtG) in hair is nowadays recognized as the approach with the highest diagnostic performance to evaluate harmful drinking. A widely accepted cut-off of 30pg/mg has been selected after several accurate compared studies. While most of the studies that were used to establish the appropriate cut-off value prescribed to cut hair into small segments before their extraction, hair milling has subsequently been identified as the most efficient pretreatment procedure and was therefore recommended in the last Consensus document issued by the Society of Hair Testing. In this study, we initially compared the results obtained with the two sample preparations, namely cutting and milling, both being applied to the same specimens (n=781). Among these, 205 samples produced measurable EtG values with both methods, with differences ranging from -41.7% up to +415% (the mean increase in EtG concentration, switching from cutting to milling, was +62.1% and the median was +42.3%). Among the aforementioned 205 samples, 29 specimens (3.7% of the total 781 samples) produced significantly different outcome, being classified as negative (i.e., below 30pg/mg) if the cutting procedure is used, but largely positive (above 40pg/mg) when milling is used. Subsequently, the positivity rates obtained on a large population dataset (>27,000 samples) with the two procedures, were retrospectively compared using variable cut-offs values. The percentage of head hair samples with EtG concentration exceeding 30pg/mg upon application of the milling procedure shows a 45% increase (from 10.9% to 15.8%) with respect to cutting procedure, whereas the fraction of hair samples with EtG exceeding 40pg/mg (10.5%) overlaps the percentage of positive samples obtained after cutting pretreatment and applying a cut-off of 30pg/mg. On the basis of these results, it would be worth considering the application of cut-off values linked with the pretreatment procedure, taking into account the results of forthcoming inter-laboratory calibrations.
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Correlation between cardio-pulmonary exercise test variables and health-related quality of life among children with congenital heart diseases. Int J Cardiol 2016; 203:1052-60. [DOI: 10.1016/j.ijcard.2015.11.028] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 11/02/2015] [Accepted: 11/04/2015] [Indexed: 11/25/2022]
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Evaluation of DNA typing as a positive identification method for soft and hard tissues immersed in strong acids. Leg Med (Tokyo) 2015. [DOI: 10.1016/j.legalmed.2015.07.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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25
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Osteonecrosis of jaw (ONJ) with and without bone exposure in patients receiving antiangiogenic agents (+/- bisphosphonates or denosumab). Ann Oncol 2015. [DOI: 10.1093/annonc/mdv346.15] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Renal tubular function in the elderly. CONTRIBUTIONS TO NEPHROLOGY 2015; 105:81-4. [PMID: 8252876 DOI: 10.1159/000422474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Development, validation and application to real samples of a multiresidue LC-MS/MS method for determination of β2 -agonists and anabolic steroids in bovine hair. JOURNAL OF MASS SPECTROMETRY : JMS 2014; 49:936-946. [PMID: 25230191 DOI: 10.1002/jms.3467] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Revised: 08/05/2014] [Accepted: 08/12/2014] [Indexed: 06/03/2023]
Abstract
β(2) -agonists are often abused in cattle breeding because of their effects on animal growth and meat properties. The use of β(2) -agonists as growth promoters is forbidden in the European Union (Council Directive 96/23/EC classifies them into group A of Annex I), due to their toxicity and carcinogenic properties, as for anabolic steroids, which are often administered in combination with β(2) -agonists, to promote the storage of proteins and increase muscle size. A unique confirmatory liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for the quantitative detection of 13 β(2) -agonists and anabolic steroids plus the qualitative identification of other three analytes in bovine hair was developed and validated, according to Decision 2002/657/CE. Hair samples were washed with dichloromethane, digested within a NaOH solution and subjected to liquid-liquid extraction. The analysis was performed by high performance liquid chromatography coupled to a triple quadrupole mass spectrometer operating in the selected reaction monitoring mode. The absence of matrix interferents, together with good repeatability of both retention times and relative abundances of diagnostic transitions, allowed the correct identification of all analytes. The quantitative calibrations obtained from spiked blank hair samples proved linear in the range tested. CCα and CCβ ranged from 0.5 ng/g to 30 ng/g. Intralaboratory reproducibility (CV%) ranged between 5.0 and 17.7 and trueness between 96% ± 7% and 105% ± 8%. The applicability of the method to real positive samples was demonstrated for both β(2) -agonists and anabolic steroids. 17α-boldenone was found in most (70%) hair samples obtained from untreated animals, supporting the hypothesis of endogenous production of this steroid.
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O13: Interpretation of hair ethyl glucuronide inter-individual factors from large population dataset. TOXICOLOGIE ANALYTIQUE ET CLINIQUE 2014. [DOI: 10.1016/s2352-0078(14)70021-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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O22: Quantification of 22 synthetic cannabinoids and 10 metabolites in human hair. TOXICOLOGIE ANALYTIQUE ET CLINIQUE 2014. [DOI: 10.1016/s2352-0078(14)70030-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Mid term results of distal femoral fractures treated with a polyaxial locking plate: a multi-center study. Open Orthop J 2014; 8:34-40. [PMID: 24627731 PMCID: PMC3952208 DOI: 10.2174/1874325001408010034] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Revised: 01/22/2014] [Accepted: 01/27/2014] [Indexed: 11/22/2022] Open
Abstract
Objective : Locking plates have become a standard implant in the treatment of distal femoral fractures. Newer designs allow polyaxial screw placement as well as the ability to lock the lag screws. Methods : The consecutive multi-centre study cohort consists of all distal femoral fractures treated with the NCB® Distal Femur plate (Zimmer, Warsaw, USA) and a minimum follow-up of twelve months. Fracture classification according the AO/ OTA system and the trauma mechanism radiological evaluation and complications were documented. Clinical evaluation consisted of the Short Form SF12 questionnaire (SF12), the Hospital for Special Surgery Score (HSS) and clinical assessment of range of motion. Results : Twenty-five patients with twenty-six fractures were available for follow-up with a minimum required follow-up of twelve months. 81% of the fractures were intra-articular. 48% of the patients were multi-traumatised, 38% having open fractures. All except two went to union (92%) with the primary procedure. The HSS Score was 79 (32-99) and the SF 12 (physical and mental) 40 (19-57) and 54 (21-66) at follow-up. There were five patients requiring surgical revision (19%). Conclusion : These fractures are often combined with concomitant injuries. Using modern locked implants high union rates can be achieved with a good function and patient satisfaction when respecting biologic and biomechanical principles.
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Enseignements autour d’un dépistage systématique de la tuberculose en population en Seine-Saint-Denis. Rev Epidemiol Sante Publique 2013. [DOI: 10.1016/j.respe.2013.07.060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Hair analysis as a tool to evaluate the prevalence of synthetic cannabinoids in different populations of drug consumers. Drug Test Anal 2013; 6:126-34. [DOI: 10.1002/dta.1556] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Revised: 08/23/2013] [Accepted: 08/29/2013] [Indexed: 11/10/2022]
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Hematologic reference intervals in Cynomolgus (Macaca fascicularis) monkeys. J Med Primatol 2013; 43:1-10. [PMID: 24102586 DOI: 10.1111/jmp.12077] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/12/2013] [Indexed: 11/28/2022]
Abstract
BACKGROUND Reference intervals are important aids for interpreting clinical pathology laboratory data especially in Cynomolgus monkey (Macaca fascicularis), the non-human primate species most widely used in biomedical research. The purpose of this study was to establish hematologic reference intervals for Cynomolgus according to the International Federation of Clinical Chemistry and Clinical and Laboratory Standards Institute guidelines using the databank at a primatology center. METHODS Blood specimens from 272 healthy Cynomolgus imported from Mauritius, the Philippines and Vietnam, were analyzed. Reference intervals were established by nonparametric method. Effects of sex, age, body weight, and breeding origin were investigated. RESULTS Hemoglobin, mean corpuscular hemoglobin, and mean corpuscular hemoglobin concentration decreased slightly and mean corpuscular volume increased slightly with age. Lower red blood cell concentration, hemoglobin, and hematocrit were observed in monkeys from the Philippines. CONCLUSIONS These hematology reference intervals, established according to international recommendations, can be used in settings using similar animals and analyzers.
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Determination of ethyl glucuronide levels in hair for the assessment of alcohol abstinence. Forensic Sci Int 2013; 232:229-36. [PMID: 24053885 DOI: 10.1016/j.forsciint.2013.07.024] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Revised: 07/15/2013] [Accepted: 07/27/2013] [Indexed: 11/29/2022]
Abstract
This study examined the potential of a highly sensitive LC-MS/MS method for the determination of EtG in head hair (i) to ascertain alcohol abstinence, (ii) to estimate the basal level of EtG (sub-ppb concentrations) in head hair in a population of alcohol abstainers and (iii) to suggest a revision of cut-off values for assessing alcohol abstinence. An UHPLC-MS/MS protocol previously developed was modified and validated again to detect low EtG levels in head hair samples from a population of 44 certain abstainers and teetotalers. Basal level of EtG in hair was determined by a standard addition quantification method. The validated UHPLC-MS/MS method allowed detecting and quantifying 0.5 and 1.0 pg/mg of EtG in hair, respectively. EtG concentrations lower than 1.0 pg/mg were determined for 95% of abstainers; 30% of them had non-detectable (<0.5 pg/mg) EtG values. Two samples evidenced EtG concentrations higher than 1.0 pg/mg that were subsequently explained by unintentional ethanol exposure. The method's feature of high analytical sensitivity makes it particularly suitable for alcohol abstinence ascertainment and, in the same time, allows to tentatively estimate basal EtG concentrations in hair around 0.8±0.4 pg/mg. This finding opens a discussion on the possible origin of basal EtG concentration and potential sources of bias in the evaluation of alcohol abstinence. Cut-off value in the range of 1.0-2.0 pg/mg can be reliably proposed to support alcohol abstinence.
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Determination of prednisolone metabolites in beef cattle. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2013; 30:1044-54. [DOI: 10.1080/19440049.2013.777975] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Determination of pharmaceutical and illicit drugs in oral fluid by ultra-high performance liquid chromatography–tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2013; 927:133-41. [DOI: 10.1016/j.jchromb.2013.01.025] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Revised: 01/23/2013] [Accepted: 01/26/2013] [Indexed: 10/27/2022]
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A field survey on the presence of prednisolone and prednisone in urine samples from untreated cows. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2012; 29:1893-900. [DOI: 10.1080/19440049.2012.719645] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Maladie de Kawasaki résistante aux immunoglobulines et compliquée de syndrome d’activation macrophagique. Arch Pediatr 2012; 19:741-4. [DOI: 10.1016/j.arcped.2012.04.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2012] [Revised: 02/14/2012] [Accepted: 04/27/2012] [Indexed: 12/18/2022]
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Simultaneous analysis of several synthetic cannabinoids, THC, CBD and CBN, in hair by ultra-high performance liquid chromatography tandem mass spectrometry. Method validation and application to real samples. JOURNAL OF MASS SPECTROMETRY : JMS 2012; 47:604-10. [PMID: 22576873 DOI: 10.1002/jms.2988] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
A simple procedure for the quantitative detection of JWH-018, JWH-073, JWH 200, JWH-250, HU-210, Δ(9)-tetrahydrocannabinol (THC), cannabidiol (CBD) and cannabinol (CBN) in hair has been developed and fully validated. After digestion with NaOH and liquid-liquid extraction, the separation was performed with an ultra-high performance liquid chromatography system coupled to a triple quadrupole mass spectrometer operating in the selected reaction monitoring mode. The absence of matrix interferents, together with excellent repeatability of both retention times and relative abundances of diagnostic transitions, allowed the correct identification of all analytes tested. The method was linear in two different intervals at low and high concentration, with correlation coefficient values between 0.9933 and 0.9991. Quantitation limits ranged from 0.07 pg/mg for JWH-200 up to 18 pg/mg for CBD The present method for the determination of several cannabinoids in hair proved to be simple, fast, specific and sensitive. The method was successfully applied to the analysis of 179 real samples collected from proven consumers of Cannabis, among which 14 were found positive to at least one synthetic cannabinoid.
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A fatal case of simultaneous ingestion of mirtazapine, escitalopram, and valproic acid. J Anal Toxicol 2012; 35:519-23. [PMID: 21871163 DOI: 10.1093/anatox/35.7.519] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Mirtazapine, escitalopram, and valproic acid are newer antidepressant drugs than traditional tricyclic antidepressants and are supposed to be less toxic. Nevertheless, intoxication cases due to their overdosage have been repeatedly reported. In the case presently reported, a 64-year-old woman with a previous history of chronic depression was found dead in her apartment. Several packages of pharmaceutical drugs were found, including mirtazapine, escitalopram, and valproic acid. During the autopsy, no evidence of natural disease or trauma was found to account for this death. In order to determine whether massive drug assumption might have determined a lethal intoxication, heart blood, urine, and gastric content were collected and submitted to toxicological analysis. Specific liquid chromatography-tandem mass spectrometry protocols were purposely developed and validated. Blood concentrations of mirtazapine, escitalopram, and valproic acid were 20.3, 65.5, and 417 mg/L, respectively, whereas urine concentrations were 17.0, 94.5, and 423 mg/L, respectively. High concentrations of these drugs were also detected in the gastric content, confirming their ingestion shortly before death. The agreement between authoptic examination by forensic pathologists and toxicological findings are consistent with the suicidal hypothesis, where the death arose by drug intoxication due to simultaneous high-dosage ingestion of mirtazapine, escitalopram, and valproic acid.
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Rapid determination of anti-estrogens by gas chromatography/mass spectrometry in urine: Method validation and application to real samples. J Pharm Anal 2011; 2:1-11. [PMID: 29403714 PMCID: PMC5760826 DOI: 10.1016/j.jpha.2011.09.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2011] [Accepted: 09/13/2011] [Indexed: 11/25/2022] Open
Abstract
A fast screening protocol was developed for the simultaneous determination of nine anti-estrogenic agents (aminoglutethimide, anastrozole, clomiphene, drostanolone, formestane, letrozole, mesterolone, tamoxifen, testolactone) plus five of their metabolites in human urine. After an enzymatic hydrolysis, these compounds can be extracted simultaneously from urine with a simple liquid-liquid extraction at alkaline conditions. The analytes were subsequently analyzed by fast-gas chromatography/mass spectrometry (fast-GC/MS) after derivatization. The use of a short column, high-flow carrier gas velocity and fast temperature ramping produced an efficient separation of all analytes in about 4 min, allowing a processing rate of 10 samples/h. The present analytical method was validated according to UNI EN ISO/IEC 17025 guidelines for qualitative methods. The range of investigated parameters included the limit of detection, selectivity, linearity, repeatability, robustness and extraction efficiency. High MS-sampling rate, using a benchtop quadrupole mass analyzer, resulted in accurate peak shape definition under both scan and selected ion monitoring modes, and high sensitivity in the latter mode. Therefore, the performances of the method are comparable to the ones obtainable from traditional GC/MS analysis. The method was successfully tested on real samples arising from clinical treatments of hospitalized patients and could profitably be used for clinical studies on anti-estrogenic drug administration.
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Health risk screening in adolescents: a pilot study. J Sports Med Phys Fitness 2011; 51:268-274. [PMID: 21681162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
AIM Even if youths are generally perceived to be healthy, adolescent years are associated with significant morbidity. Screening and counselling programmes seem to be cost-effective but adolescents prefer to rely on health care services for the treatment of diagnosed diseases or injuries rather than for preventive actions. Age oriented studies are needed for better understanding the health needs of adolescents in order to provide an adequate offer of preventive opportunities. METHODS Eight hundred youths ranging from 13 to 18 years of age were recruited. Health status and risks were clustered into the following five categories: clinical assessment, substance use/abuse, nutritional habits, alcohol and tobacco consumption, physical status. Surprisingly, 33% of the youths were suggested to perform further clinical assessment and even more interestingly a significant number of them received a diagnosis of a symptomatic disorder for which he or she did not previously consider a medical visit to be necessary. RESULTS As expected, alcohol consumption, tobacco smoking, drug use/abuse and sedentary habit represent the risky lifestyles commonly followed by adolescents. CONCLUSION The present study confirms the importance of screening programs addressed to health issues and behavioural attitudes of adolescents even in light of the fact that they may underestimate even indicative symptoms.
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Validation of a GC/MS method for the detection of two quinolinone-derived selective androgen receptor modulators in doping control analysis. Anal Bioanal Chem 2010; 400:137-44. [DOI: 10.1007/s00216-010-4569-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2010] [Revised: 11/25/2010] [Accepted: 11/29/2010] [Indexed: 01/03/2023]
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The ambulatory arterial stiffness index is not affected by night-time blood pressure characteristics. J Hum Hypertens 2009; 23:680-2. [DOI: 10.1038/jhh.2009.25] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Lipid lowering effect of fulvestrant in hormone-sensitive metastatic breast cancer patients. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.1085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
1085 Background: Fulvestrant (F) is a pure anti-estrogen agent available for the HT of post-menopausal ormone-sensitive advanced breast cancer (ABC). Aim of the study is to analyze the effect(s) of F treatment on lipid profile, endometrial mucosa and coagulation indices (CI). Methods: 24 pts (mean age 66.2 ± 9.5 yrs) with hormone-sensitive ABC were enrolled. All patients (data on 21 pts) received at least one previous HT course, with 90.5% receiving =2 HT courses. Last HT was exemestane in 13/21, letrozole in 5/21 and other in 3/21 with a median withdrawal time of 19 days (range 3–1,456). All pts but one received at least one previous CT regimen, with 60% receiving =2 CT regimens. Complete fasting lipid blood profile and CI were assessed before F administration, every 3 months and at discontinuation. Endometrial mucosa thickness was evaluated before F administration and at end-study time. All patients referred no significant dietary changes during treatment. Pts receiving statins were excluded. Results: pts received a median of 6 F injections (range 3–14). We observed SD in 10/21 pts and PD in 11/21 pts with a mean TTP of 6.2 ± 2.9 months. Total cholesterol (C) levels significantly decreased during F treatment (214.1 ± 48.7 vs 194.0 ± 41.0 mg/dl; p=0.0084) together with LDL-C (119.5 ± 40.7 vs 104.2 ± 30.4 mg/dl; p=0.0067). HDL-C (62.4 ± 17.8 vs 64.3 ± 19.5 mg/dl; p = ns) and triglycerides (152.4 ± 64.5 vs 148.2 ± 61.6 mg/dl; p=ns) did not show significant changes. Subgroup analysis demonstrated a reduction in both pts receiving = 6 (n=17) or >6 (n=11) injections (204.6 ± 45.3 vs 186.6 ± 41.2 mg/dl, p=0.014 and 219.5 ± 48.9 vs 203.9 ± 33.3 mg/dl, p=ns respectively). All CI and mean endometrial mucosa thickness value did not vary. Conclusions: We observed a clear lipid lowering effect of F in our study population. We suggest a possible effect of F on lipid metabolism. Lipid lowering effect of F it’s evident during the first six months of treatment lasting in pts continuing therapy. No significant financial relationships to disclose.
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RelA is required for IL-1beta stimulation of Matrix Metalloproteinase-1 expression in chondrocytes. Osteoarthritis Cartilage 2007; 15:431-41. [PMID: 17097317 PMCID: PMC1865522 DOI: 10.1016/j.joca.2006.09.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2006] [Accepted: 09/24/2006] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Interleukin-1beta (IL-1beta) stimulates collagenase-1 (Matrix Metalloproteinase-1 (MMP-1)) expression in articular chondrocytes, leading to cleavage of type II collagen and irreversible cartilage degradation. The nuclear factor-kappa B (NF-kappaB) pathway is potently activated in IL-1beta-stimulated cells and has been implicated as an intermediate in MMP-1 gene expression. However, the roles of individual NF-kappaB family members during IL-1beta-induced MMP-1 gene expression have not been defined. RESULTS To address the relationship between the NF-kappaB pathway and MMP-1 gene activation in chondrocytes, primary cultured human articular chondrocyte cultures (HAC) and SW-1353 cells were stimulated with IL-1beta over a 24-h time course and MMP-1, NF-kappaB1, NF-kappaB2 and RelA gene expression was assayed. IL-1beta-induced MMP-1 expression was comparable in HAC and SW-1353 cells both temporally and quantitatively. MMP-1 gene expression was mirrored by increases in NF-kappaB gene expression, and inhibition of NF-kappaB nuclear translocation with dominant-negative IkappaBalpha reduced IL-1beta-dependent MMP-1 gene expression. IL-1beta activated the NF-kappaB pathway in chondrocytes, both through phosphorylation and transient degradation of IkappaBalpha, as well as through sustained phosphorylation of RelA. Small inhibitory RNAs (siRNA) specific for RelA resulted in significant reduction of MMP-1 mRNA, whereas siRNA for NF-kappaB1 and NF-kappaB2 augmented IL-1beta-induced MMP-1 expression. CONCLUSIONS Our data demonstrate that IL-1beta activation of the NF-kappaB pathway is required for IL-1beta induction of MMP-1 in chondrocytes and that RelA can work independently of NF-kappaB1 or NF-kappaB2 to activate this gene expression program.
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Fast gas chromatographic/mass spectrometric determination of diuretics and masking agents in human urine. J Chromatogr A 2006; 1135:219-29. [PMID: 17027009 DOI: 10.1016/j.chroma.2006.09.034] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2006] [Revised: 09/07/2006] [Accepted: 09/15/2006] [Indexed: 11/18/2022]
Abstract
An analytical procedure was developed for the fast screening of 16 diuretics (acetazolamide, althiazide, amiloride, bendroflumethiazide, bumetanide, canrenoic acid, chlorthalidone, chlorthiazide, clopamide, ethacrynic acid, furosemide, hydrochlorthiazide, hydroflumethiazide, indapamide, triamterene, trichlormethiazide) and a masking agent (probenecid) in human urine. The whole method involves three analytical steps, including (1) liquid/liquid extraction of the analytes from the matrix, (2) their reaction with methyl iodide at 70 degrees C for 2 h to form methyl derivatives, (3) analysis of the resulting mixture by fast gas chromatography/electron impact mass spectrometry (fast GC/EI-MS). The analytical method was validated by determining selectivity, linearity, accuracy, intra and inter assay precision, extraction efficiencies and signal to noise ratio (S/N) at the lowest calibration level (LCL) for all candidate analytes. The analytical performances of three extraction procedures and five combination of derivatization parameters were compared in order to probe the conditions for speeding up the sample preparation step. Limits of detection (LOD) were evaluated in both EI-MS and ECNI-MS (electron capture negative ionization mass spectrometry) modes, indicating better sensitivity for most of the analytes using the latter ionization technique. The use of short columns and high carrier gas velocity in fast GC/MS produced efficient separation of the analytes in less than 4 min, resulting in a drastic reduction of the analysis time, while a resolution comparable to that obtained from classic GC conditions is maintained. Fast quadrupole MS electronics allows high scan rates and effective data acquisition both in scan and selected ion monitoring modes.
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Photoinduced halophenol formation in the presence of iron(III) species or cadmium sulfide. J Photochem Photobiol A Chem 2005. [DOI: 10.1016/j.jphotochem.2004.07.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Angular dependence of internal energy distributions of activated Fe(CO)5.cntdot.+ and W(CO)6.cntdot.+ ions. The contributions of vibrational and electronic excitation mechanisms in kiloelectron volt collisions. J Am Chem Soc 2002. [DOI: 10.1021/ja00157a019] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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