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1.
BJA Open ; 12: 100309, 2024 Dec.
Article in English | MEDLINE | ID: mdl-39381542

ABSTRACT

Background: Non-pharmaceutical approaches can help manage preoperative anxiety, but few studies have evaluated psychoeducational programmes, especially for cancer surgery. We assessed the feasibility of the COHErence Cardiaque (COHEC) programme where cardiac coherence and medical hypnosis are combined to manage preoperative anxiety in patients undergoing breast or gynaecological cancer surgical interventions (BGCSI). Methods: Patients undergoing BGCSI were enrolled and followed a daily home programme with cardiac coherence and medical hypnosis sessions, starting 7 days before the procedure. The primary endpoint was optimal patient adherence (i.e. completion of ≥14 sessions). Secondary endpoints were anxiety levels, measured using the Visual Analogue Scale (VAS) and the Amsterdam Preoperative Anxiety and Information Scale (APAIS), satisfaction (EVAN-G), and quality of postoperative recovery (QoR-15). Results: In total, 53 patients [mean age: 55 (34-82) yr] were included; 83.7% had breast cancer and 15.1% had gynaecological cancer. Optimal adherence was achieved by 64.2% (95% confidence interval: 49.8-76.9%) of the intention-to-treat population. Among the 43 patients who completed at least one session, exploratory analysis showed that anxiety on the day before (P=0.02) and the morning of the intervention (P=0.04) was decreased in patients with severe anxiety at baseline (VAS ≥70). The median VAS satisfaction score for the programme was 10 (4-10). Overall, 94% of patients were willing to include the COHEC programme in their daily routine. Conclusions: The implementation of a psychoeducational programme combining cardiac coherence and medical hypnosis is feasible and might potentially help patients undergoing BGCSI to manage preoperative anxiety. A randomised trial is underway to assess the efficacy of the COHEC programme. Clinical trial registration: NCT03981731.

2.
BMJ Open ; 13(12): e072215, 2023 12 12.
Article in English | MEDLINE | ID: mdl-38086587

ABSTRACT

INTRODUCTION: Preoperative anxiety is a frequent problem that can lead to complications both during anaesthesia and in the postoperative period, especially in oncology. Studies have shown that it can be managed using non-pharmacological approaches, but few works have evaluated psychoeducational programmes. The aim of the COHErence Cardiaque (COHEC) II Study is to evaluate the combination of medical hypnosis (MH) and cardiac coherence (CC) training to manage preoperative anxiety in patients with cancer. METHODS AND ANALYSIS: COHEC II is an ongoing multicentre randomised clinical trial carried out in three French comprehensive cancer centres. In total, 296 patients who will undergo surgery for cancer will be recruited during 18 months and will be randomised in the control arm or the intervention arm. Patients in the intervention arm will follow a daily programme that combines MH and CC, starting 7 days before surgery. The control arm will receive the standard treatment to manage preoperative anxiety. The primary endpoint is the anxiety level on surgery day, measured using a Visual Analogue Scale. Secondary endpoints are patient adherence to the programme, satisfaction and postsurgery recovery quality. ETHICS AND DISSEMINATION: The study protocol was approved by the French Ethics Committee (Comité de Protection des Personnes EST-II) on 24 November 2021 and will be carried out following the good practice guidelines and the Declaration of Helsinki. Results will be published in peer-reviewed journals and presented at conferences. TRIAL REGISTRATION NUMBER: NCT05197972.


Subject(s)
Hypnosis , Neoplasms , Humans , Anxiety/prevention & control , Anxiety Disorders , Neoplasms/complications , Neoplasms/surgery , Research Design , Multicenter Studies as Topic , Randomized Controlled Trials as Topic
3.
Cancer Chemother Pharmacol ; 88(4): 723-729, 2021 10.
Article in English | MEDLINE | ID: mdl-34286354

ABSTRACT

PURPOSE: Pharmacist consultation is unfrequently performed in oncology clinical trials that include patients who often have many co-treatments increasing the risk of drug-drug interactions (DDI). The aim of this study was to determine whether best possible medication history (BPMH) by hospital pharmacist at inclusion and therapeutic drug monitoring could be used for DDI risk evaluation and for current oral targeted therapy management. METHODS: A prospective clinical trial (ALCINA 2, NCT04025541) was carried out in metastatic breast cancer cohort treated by palbociclib to conduct pharmacokinetics-toxicity correlation study. BPMH was prospectively performed by the hospital pharmacist at each trial inclusion, followed by a contact to the patient's community pharmacy to complete the collected data. Pharmacokinetic analysis was performed on blood samples collected at day 15 of cycle 1 of palbociclib treatment. RESULTS: Pharmacist interventions indicated that at inclusion, current medications were incomplete for 63% of the enrolled patients (32/51). It allowed the real-time management of high-risk DDI detected in third of patients. The palbociclib Ctrough geometric median (min-max) was significantly higher in cohort with potential DDI [106 ng/mL (66.7-113)], than cohort without potential DDI [70.1 ng/mL (54.1-89.7)], p = 0.0284. CONCLUSION: This is the first prospective study evaluating the relevance of proactive BPMH by pharmacist with contact to the community pharmacy during the inclusion step of a clinical trial to ensure the efficacy and safety of the investigated drug. This investigation was thus able to highlight the statistically significant impact of these DDI on palbociclib plasma concentration variation during the clinical trial. TRIAL REGISTRATION: Clinicaltrials.gov identifier NCT04025541.


Subject(s)
Antineoplastic Agents/administration & dosage , Breast Neoplasms/drug therapy , Pharmacists/organization & administration , Piperazines/administration & dosage , Pyridines/administration & dosage , Administration, Oral , Antineoplastic Agents/adverse effects , Antineoplastic Agents/pharmacokinetics , Drug Interactions , Drug Monitoring/methods , Female , Humans , Molecular Targeted Therapy , Pharmacy Service, Hospital/organization & administration , Piperazines/adverse effects , Piperazines/pharmacokinetics , Professional Role , Prospective Studies , Pyridines/adverse effects , Pyridines/pharmacokinetics
4.
Talanta ; 208: 120391, 2020 Feb 01.
Article in English | MEDLINE | ID: mdl-31816729

ABSTRACT

A fully automated analytical methodology combining salting-out assisted liquid-liquid extraction (SALLE) and capillary electrophoresis (CE) for the analysis of three Tyrosine Kinase Inhibitors (TKIs) in plasma samples is proposed. The automated methodology, called A-SALLE-CE-UV, makes full use of the advantages of both techniques by combining desalting, protein precipitation, automated liquid-liquid extraction, in-line CE stacking and electrophoretic separation of analytes in plasma samples in a fully integrated way. At first, the capillary is used to deliver appropriate micro-volumes of extraction agent solutions (acetonitrile, salt) in the plasma sample. ACN and salting-out agent (NaCl) solutions are added by pressure from outlet vials into the sample vial (inlet) containing human plasma sample spiked with the three tested TKIs. After addition of both ACN and NaCl solutions, mixing is achieved by generating air bubbles leading to a two phases separation and extraction of TKIs in the upper mostly organic phase (ACN). The upper phase containing the TKIs is then injected and analysed by CE-UV. Due to the presence of ACN, the analytes are stacked in-line and successfully separated in the same capillary. The results obtained in terms of limit of detection (LOD), limit of quantification (LOQ), sensitivity enhancement factor (SEF), repeatability and linearity demonstrate the applicability of the proposed method for possible therapeutic drug monitoring (TDM) of TKIs.


Subject(s)
Electrophoresis, Capillary/methods , Liquid-Liquid Extraction/methods , Protein Kinase Inhibitors/blood , Protein Kinase Inhibitors/isolation & purification , Protein-Tyrosine Kinases/antagonists & inhibitors , Salts/chemistry , Automation , Humans
5.
Electrophoresis ; 40(21): 2810-2819, 2019 11.
Article in English | MEDLINE | ID: mdl-31429941

ABSTRACT

A simple, sensitive, specific, and cost-effective analytical methodology was developed for the analysis of human plasma samples spiked with imatinib by CZE with on-line UV detection in the context of Therapeutic Drug Monitoring. Several analytical conditions such as the ionic strength (I) and the pH of the BGE composed of citric acid and ε-amino caproic acid were studied in regards of the presence of sodium chloride (NaCl) in plasma samples (1% m/v). Computer simulations (Simul software) were used to confirm the experimental results and to understand imatinib electrophoretic behavior in the presence of NaCl. Furthermore, the advantages of adding ACN to the sample containing NaCl to combine efficient protein precipitation and on-line CZE stacking of imatinib were demonstrated. LOD and LOQ values of 48 and 191 ng/mL were obtained from plasma sample supernatant after protein precipitation with ACN, which is much lower than mean imatinib plasma level observed for patients treated by imatinib mesylate (about 1000 ng/mL). Good linearity was obtained in the concentration range 191-5000 ng/mL (R2  > 0.997). RSD of less than 1.68% and 2.60% (n = 6) for migration times and corrected peak areas, respectively, were observed at the LOQ.


Subject(s)
Acetonitriles/chemistry , Electrophoresis, Capillary/methods , Imatinib Mesylate/blood , Sodium Chloride/chemistry , Humans , Limit of Detection , Linear Models , Reproducibility of Results , Software
6.
J Chromatogr A ; 1579: 121-128, 2018 Dec 07.
Article in English | MEDLINE | ID: mdl-30361035

ABSTRACT

Developing an easy to use, cheap and fast analytical methodology is highly demanded for clinical practices, such as therapeutic drug monitoring (TDM). The present work deals with the development of an analytical methodology for the analysis of four basic anticancer drugs, namely tyrosine kinase inhibitors (TKIs), in human plasma by combining salting-out assisted liquid-liquid extraction (SALLE) with capillary electrophoresis (CE). This SALLE-CE methodology makes a full use of the advantages of both techniques by combining extraction, on-line concentration and separation in a simple way. First, plasma samples containing TKIs are mixed with acetonitrile (ACN) in appropriate volumes to precipitate proteins. After vortexing and centrifugation, sodium chloride (NaCl) is added to the plasma-ACN mixture to induce a two phases separation. TKIs are efficiently extracted (60-100% extraction efficiency) in the upper (mostly organic) phase which is directly analyzed by capillary electrophoresis (CE) coupled to UV detection. The high content of ACN in the upper phase allows the stacking of the analytes in the capillary (on-line stacking) during analysis. For the first time thanks to this electrophoretic process, the injected sample volume can be as large as 80% of the capillary volume (till the detector window). Good linearity was obtained for each TKI in the concentration range 60-2000 ng/ml with correlation coefficient (r²) between 0.997 and 0.999. LOD and LOQ in human plasma with such large injected volume were determined from 16 to 280 ng/ml and from 62 to 900 ng/ml respectively depending on the TKI. Recoveries for the four TKIs ranged from 60 to 100%. The repeatability of the SALLE-CE methodology for the analysis of TKIs in human plasma was evaluated with injected sample volume equal to 80% of the capillary volume till detector window. Relative standard deviations (RSDs) of less than 1.24 and 2.84% on migration times and corrected peak areas respectively were obtained at the LOQ. The sensitivity was enhanced by 61 to 265 folds confirming the applicability of the proposed methodology for the assay of TKIs in patients' plasma.


Subject(s)
Blood Chemical Analysis/methods , Electrophoresis, Capillary , Enzyme Inhibitors/blood , Liquid-Liquid Extraction , Protein-Tyrosine Kinases/antagonists & inhibitors , Sodium Chloride/chemistry , Acetonitriles/chemistry , Centrifugation , Enzyme Inhibitors/metabolism , Humans , Plasma/chemistry
7.
Therapie ; 72(6): 643-647, 2017 Dec.
Article in English | MEDLINE | ID: mdl-28647110

ABSTRACT

We report the success of tardive electroconvulsive therapy in a case of loxapine malignant syndrome with catatonia. Loxapine and its metabolites were measured in biological samples by liquid chromatography coupled to tandem mass spectrometry. Genes were studied by sequencing and quantitative polymerase chain reaction (PCR). Plasmatic drug concentrations showed a supratherapeutic concentration of loxapine with a very low 8-hydroxyloxapine/loxapine ratio (range from 0.32 to 0.66, normal value>2 for 100mg) and a very long elimination half-life of loxapine (half-life>140h, normal value from 1 to 4hours). We tried to explain this kinetics by exploring the main pharmacogenes implicated in the metabolism of loxapine. No genetic abnormality for CYP1A2 was observed. The study of associated treatments showed the potential contribution of valproate. Pharmacokinetics and pharmacogenetics investigations revealed a blockade of the CYP1A2 metabolic pathway without genetic abnormalities, probably due to valproate co-medication. Toxicological monitoring of loxapine and its metabolites helped to explain the persistence of symptoms and to adapt the therapeutic management.


Subject(s)
Antipsychotic Agents/adverse effects , Electroconvulsive Therapy/methods , Loxapine/adverse effects , Neuroleptic Malignant Syndrome/therapy , Antipsychotic Agents/administration & dosage , Antipsychotic Agents/pharmacokinetics , Chromatography, Liquid/methods , Cytochrome P-450 CYP1A2/genetics , Female , Half-Life , Humans , Loxapine/administration & dosage , Loxapine/pharmacokinetics , Middle Aged , Neuroleptic Malignant Syndrome/etiology , Pharmacogenetics , Polymerase Chain Reaction , Tandem Mass Spectrometry/methods , Treatment Outcome
8.
Fundam Clin Pharmacol ; 29(3): 219-37, 2015 Jun.
Article in English | MEDLINE | ID: mdl-25817555

ABSTRACT

Irinotecan is a major drug in the treatment of advanced colorectal cancer. Its active form is the SN38 metabolite, which is cleared by the biliary route after glucuronidation by uridine diphosphate-glucuronosyltransferase 1A1 (UGT1A1). UGT1A1 activity exhibits a wide intersubject variability, in part related to UGT1A1 gene polymorphisms. The present review on the impact of the deficient UGT1A1*28 variant on irinotecan efficacy and toxicity was produced by a French joint workgroup comprising the Group of Clinical Onco-pharmacology (GPCO-Unicancer) and the National Pharmacogenetics Network (RNPGx). It clearly emerges that for irinotecan doses at least equal to 180 mg/m(2) , patients homozygous for the UGT1A1*28 allele are at increased risk of developing hematological and/or digestive toxicities. Irinotecan dose reduction is thus recommended in homozygous *28/*28 patients. In addition, this personalized medicine strategy aims to secure high-dose irinotecan administration (≥240 mg/m(2) ) that have proven to be safe in homozygous *1/*1 patients only. The clinical relevance of this test is discussed in terms of treatment efficacy improvement, as increasing the irinotecan dose appears to be safe in patients not bearing a deficient allele. Best execution practices, cost-effectiveness, and result interpretation are discussed with the aim of facilitating the implementation of this analysis in clinical practice. The existence of networks of laboratories performing this test in routine hospital treatment, as in France, offers the prospect of widespread screening, thus guaranteeing equal access to safe treatment and optimized therapy for patients receiving irinotecan-based therapy in advanced colorectal cancer.

9.
Bull Cancer ; 101(6): 533-53, 2014 Jun.
Article in French | MEDLINE | ID: mdl-24977443

ABSTRACT

Irinotecan is a cytotoxic agent administered by IV infusion in the treatment of advanced colorectal cancer. Its anticancer activity results from its bioactivation into SN-38 metabolite, which is cleared through glucuronidation by the hepatic enzyme uridine diphosphate-glucuronosyltransferase 1A1 (UGT1A1). In the general population, there is wide inter-subject variability in UGT1A1 enzyme activity related to UGT1A1 gene polymorphisms. The French joint workgroup coming from the National Pharmacogenetic Network (RNPGx) and the Group of Clinical Oncologic Pharmacology (GPCO) herein presents an updated review dealing with efficacy and toxicity clinical studies related to UGT1A1 genetic variants. From a critical analysis of this review it clearly emerges that, for doses higher than 180 mg/m(2), hematologic and digestive irinotecan-induced toxicities could be prevented in daily clinical practice by generalizing the use of a simple pharmacogenetic test before starting treatment. The clinical relevance of this test is also discussed in terms of treatment efficacy improvement, with the possibility of increasing the irinotecan dose in patients not bearing the deleterious allele. This test involves using a blood sample to analyze the promoter region of the UGT1A1 gene (UGT1A1*28 allele). Best execution practices, laboratory costs, as well as results interpretation are described with the aim of facilitating the implementation of this analysis in clinical routine. The existence of a French laboratories network performing this test in clinical routine makes it possible to generalize UGT1A1 deficiency screening, so as to guarantee equal access to safe treatment and optimized irinorecan-based therapy for the many patients receiving irinotecan-based therapy in advanced colorectal cancer.


Subject(s)
Antineoplastic Agents, Phytogenic/administration & dosage , Camptothecin/analogs & derivatives , Gastrointestinal Neoplasms/drug therapy , Gastrointestinal Neoplasms/genetics , Glucuronosyltransferase/genetics , Antineoplastic Agents, Phytogenic/adverse effects , Antineoplastic Agents, Phytogenic/pharmacokinetics , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Asian People , Camptothecin/administration & dosage , Camptothecin/adverse effects , Camptothecin/pharmacokinetics , Colorectal Neoplasms/drug therapy , Colorectal Neoplasms/ethnology , Colorectal Neoplasms/genetics , France , Genotype , Gilbert Disease/genetics , Glucuronosyltransferase/metabolism , Humans , Irinotecan , Pharmacovigilance , Phenotype , Polymorphism, Genetic , Treatment Outcome , United States , White People
10.
Arch Pathol Lab Med ; 136(6): 646-51, 2012 Jun.
Article in English | MEDLINE | ID: mdl-22646272

ABSTRACT

CONTEXT: Hydatidiform mole, an aberrant human pregnancy, is commonly a nonrecurrent disease. Recently, a rare autosomal recessive form of familial and/or recurrent molar pregnancies was associated with mutations in the NLRP7 gene. OBJECTIVE: To investigate whether NLRP7 mutations exist in Tunisian women with sporadic hydatidiform moles. DESIGN: Genomic DNA from 38 unrelated Tunisian patients with sporadic hydatidiform moles were screened by sequencing all NLRP7 exons. A high-resolution melting curve analysis was performed on 170 DNA controls to analyze new sequence variants. RESULTS: More than 13% of these patients were heterozygous for NLRP7 mutations. We found 2 novel missense mutations in the heterozygous state, c.544G>A (p.Val182Met) in 1 patient and c.1480G>A (p.Ala494Thr) in 2 patients, and 2 already reported mutations, c.1532A>G (p.Lys511Arg) and c.2156C>T (p.Ala719Val), in 2 patients. None of these mutations were identified in 170 controls except for 1 woman who was heterozygous for p.Val182Met. CONCLUSION: As homozygous NLRP7 mutations are associated with recurrent hydatidiform mole or conception loss, the heterozygous state could represent a risk factor for nonrecurrent mole.


Subject(s)
Adaptor Proteins, Signal Transducing/genetics , Hydatidiform Mole/genetics , Mutation , Uterine Neoplasms/genetics , Adolescent , Adult , DNA Mutational Analysis , Female , Homozygote , Humans , Hydatidiform Mole/pathology , Immunohistochemistry , Middle Aged , Pregnancy , Sequence Analysis, DNA , Tunisia , Young Adult
11.
Am J Hum Genet ; 89(3): 451-8, 2011 Sep 09.
Article in English | MEDLINE | ID: mdl-21885028

ABSTRACT

Familial biparental hydatidiform mole (FBHM) is the only known pure maternal-effect recessive inherited disorder in humans. Affected women, although developmentally normal themselves, suffer repeated pregnancy loss because of the development of the conceptus into a complete hydatidiform mole in which extraembryonic trophoblastic tissue develops but the embryo itself suffers early demise. This developmental phenotype results from a genome-wide failure to correctly specify or maintain a maternal epigenotype at imprinted loci. Most cases of FBHM result from mutations of NLRP7, but genetic heterogeneity has been demonstrated. Here, we report biallelic mutations of C6orf221 in three families with FBHM. The previously described biological properties of their respective gene families suggest that NLRP7 and C6orf221 may interact as components of an oocyte complex that is directly or indirectly required for determination of epigenetic status on the oocyte genome.


Subject(s)
Adaptor Proteins, Signal Transducing/metabolism , Genomic Imprinting/physiology , Hydatidiform Mole/genetics , Oocytes/physiology , Proteins/genetics , Proteins/metabolism , Adaptor Proteins, Signal Transducing/genetics , Base Sequence , Cell Line , Female , Genes, Recessive/genetics , Genomic Imprinting/genetics , Humans , Immunohistochemistry , Molecular Sequence Data , Mutation/genetics , Oocytes/metabolism , Pedigree , Pregnancy , Sequence Alignment , Sequence Analysis, DNA
12.
Int J Gynecol Pathol ; 30(4): 348-53, 2011 Jul.
Article in English | MEDLINE | ID: mdl-21623199

ABSTRACT

A familial or sporadic recurrent hydatidiform mole is a rare autosomal recessive condition that has been associated with biallelic mutations in the nucleotide-binding, leucine-rich repeat, pyrin domain 7 (NLRP7) gene (19q13.42). Cases from different ethnic origins have been reported earlier. Here we report the first Tunisian patients: 2 sisters with homozygous NLRP7 mutations (p.E570X) and 1 sporadic case with no mutation in NLRP7. Our results extend the number of familial recurrent reproductive wastages due to mutations in NLRP7. We suggest that mutations screening of NLRP7 could be proposed more systematically in women with recurrent pathologic pregnancy outcomes of unknown origin. The rare cases with a typical clinical picture, which were not related to NLRP7 mutation as in our sporadic case, should be investigated more to identify the causative gene.


Subject(s)
Adaptor Proteins, Signal Transducing/genetics , Hydatidiform Mole/genetics , Mutation , Uterine Neoplasms/genetics , Adult , Female , Humans , Microsatellite Repeats , Pedigree , Polymerase Chain Reaction , Polymorphism, Restriction Fragment Length , Pregnancy , Recurrence , Sequence Analysis, DNA , Tunisia
13.
Eur J Obstet Gynecol Reprod Biol ; 157(2): 197-9, 2011 Aug.
Article in English | MEDLINE | ID: mdl-21439709

ABSTRACT

OBJECTIVES: The NLRP7 gene (19q13.42) is associated with recurrent and/or familial hydatidiform moles. Several mutations, histopathological types and reproductive outcomes have been described. We studied our recurrent hydatidiform mole cases recorded since 1999 in order to identify links between clinic, histology and genetics. STUDY: We present here the gestational history and the spectrum of NLRP7 mutations in our French series. DESIGN: We performed a retrospective study from clinical forms received for genetic diagnosis. Cases declaration was based on a voluntary initiative coming from French practitioners, subjected to patients' agreement. RESULTS: Among 12 recurrent hydatidiform moles investigated, we identified 3 cases of confirmed homozygous NLRP7 mutation and 3 cases of heterozygous NLRP7 mutation. One patient bore a novel mutation p.Leu880Ser in a homozygous state. CONCLUSIONS: We here identified a new homozygous NLRP7 mutation. Unfortunately, no modern therapeutic option has proven effective to obtain evolutive pregnancies. Then, fundamental and clinical researches seem to be necessary. Moreover, collecting RHM cases is essential.


Subject(s)
Adaptor Proteins, Signal Transducing/genetics , Hydatidiform Mole/genetics , Mutation/genetics , Neoplasm Recurrence, Local/genetics , Uterine Neoplasms/genetics , Adult , Female , France , Genotype , Heterozygote , Homozygote , Humans , Hydatidiform Mole/ethnology , Neoplasm Recurrence, Local/ethnology , Pregnancy , Pregnancy Complications, Neoplastic/genetics , Retrospective Studies , Uterine Neoplasms/ethnology
14.
Clin Chim Acta ; 412(5-6): 430-4, 2011 Feb 20.
Article in English | MEDLINE | ID: mdl-21094154

ABSTRACT

BACKGROUND: From the wide range of methods currently available for genotyping, we wished to identify a quick, reliable and affordable approach for routine use in our laboratory for LTA+252 C>T SNP screening. METHODS: We set up and compared three genotyping methods for SNP detection: restriction fragment length polymorphism (RFLP), tetra primer amplification refractory mutation system PCR (TPAP) and unlabeled probe melting analysis (UPMA). The SNP model used was LTA+252 C>T, a cytokine gene polymorphism that has been associated with response to treatment in rheumatoid arthritis. The study was performed using 46 samples from healthy Caucasian volunteers. RESULTS: Allele and genotype distribution was similar to that previously described in the same population. All three genotyping methods showed good reproducibility and are suitable for a medium scale throughput molecular platform. UPMA was the most cost effective, reliable and safe method since it required the shortest technician time, could be performed in a single closed tube and involved automatic data analysis. CONCLUSION: This work is the first to compare these three genotyping techniques and provides evidence for UPMA being the method of choice for LTA+252 C>T SNP genotyping.


Subject(s)
DNA Probes/genetics , Nucleic Acid Denaturation/genetics , Polymerase Chain Reaction/methods , Polymorphism, Restriction Fragment Length/genetics , Polymorphism, Single Nucleotide/genetics , Genotype , Humans
15.
PLoS One ; 5(11): e14096, 2010 Nov 23.
Article in English | MEDLINE | ID: mdl-21124859

ABSTRACT

The recent identification of genes implicated in hereditary recurrent fevers has allowed their specific diagnosis. So far however, only punctual mutations have been identified and a significant number of patients remain with no genetic confirmation of their disease after routine molecular approaches such as sequencing. The possible involvement of sequence rearrangements in these patients has only been examined in familial Mediterranean fever and was found to be unlikely. To assess the existence of larger genetic alterations in 3 other concerned genes, MVK (Mevalonate kinase), NLRP3 (Nod like receptor family, pyrin domain containing 3) and TNFRSF1A (TNF receptor superfamily 1A), we adapted the qPCR-HRM method to study possible intragenic deletions and duplications. This single-tube approach, combining both qualitative (mutations) and quantitative (rearrangement) screening, has proven effective in Lynch syndrome diagnosis. Using this approach, we studied 113 unselected (prospective group) and 88 selected (retrospective group) patients and identified no intragenic rearrangements in the 3 genes. Only qualitative alterations were found with a sensitivity similar to that obtained using classical molecular techniques for screening punctual mutations. Our results support that deleterious copy number alterations in MVK, NLRP3 and TNFRSF1A are rare or absent from the mutational spectrum of hereditary recurrent fevers, and demonstrate that a routine combined method such as qPCR-HRM provides no further help in genetic diagnosis. However, quantitative approaches such as qPCR or SQF-PCR did prove to be quick and effective and could still be useful after non contributory punctual mutation screening in the presence of clinically evocative signs.


Subject(s)
Genetic Predisposition to Disease/genetics , Hereditary Autoinflammatory Diseases/genetics , Mutation , Polymerase Chain Reaction/methods , Carrier Proteins/genetics , Female , Gene Rearrangement , Genetic Testing/methods , Genotype , Hereditary Autoinflammatory Diseases/diagnosis , Humans , Male , NLR Family, Pyrin Domain-Containing 3 Protein , Phosphotransferases (Alcohol Group Acceptor)/genetics , Receptors, Tumor Necrosis Factor, Type I/genetics , Reproducibility of Results , Sensitivity and Specificity
16.
Am J Health Syst Pharm ; 66(21): 1929-33, 2009 Nov 01.
Article in English | MEDLINE | ID: mdl-19850787

ABSTRACT

PURPOSE: The physicochemical stability of extemporaneous dilutions of oxaliplatin in 5% dextrose injection stored in polyvinyl chloride (PVC), polypropylene, and polyethylene infusion bags was studied. METHODS: Oxaliplatin 100 mg/20 mL concentrated solution was diluted in 100 mL of 5% dextrose injection in PVC, polypropylene, and polyethylene infusion bags to produce nominal oxaliplatin concentrations of 0.2 and 1.3 mg/mL. The filled bags were stored for 14 days at 20 degrees C and protected from light, at 20 degrees C under normal fluorescent light, and at 4 degrees C. A 1-mL sample was removed from each bag at time 0 and at 24, 48, 72, 120, 168, and 336 hours. The samples were visually inspected for color and clarity, and the pH values of the solutions were measured. High-performance liquid chromatography was used to assay oxaliplatin concentration. Bacterial contamination was assessed on study day 14 after incubation in trypticase soy solution for three days at 37 degrees C. RESULTS: Solutions of oxaliplatin 0.2 and 1.3 mg/mL in 5% dextrose injection were stable in the three container types for at least 14 days at both 4 degrees C and 20 degrees C without regard to light exposure. No color change was detected during the storage period, and pH values remained stable. No microbial contamination was detected in any samples over the study period. CONCLUSION: Oxaliplatin solutions diluted in 5% dextrose injection to 0.2 and 1.3 mg/mL were stable in PVC and PVC-free infusion bags for at least 14 days at both 4 degrees C and 20 degrees C without regard to light exposure.


Subject(s)
Antineoplastic Agents/chemistry , Glucose/chemistry , Organoplatinum Compounds/chemistry , Polyethylene , Polypropylenes , Polyvinyl Chloride , Chromatography, High Pressure Liquid , Drug Contamination , Drug Packaging , Drug Stability , Drug Storage , Glucose/administration & dosage , Hydrogen-Ion Concentration , Infusions, Intravenous , Oxaliplatin , Solutions , Temperature , Time Factors
17.
Eur J Hum Genet ; 16(11): 1404-6, 2008 Nov.
Article in English | MEDLINE | ID: mdl-18648395

ABSTRACT

Familial mediterranean fever (FMF) is a hereditary autoinflammatory autosomal recessive disease caused by mutations in the MEFV gene. Despite the identification of many disease associated MEFV mutations, often the clinical diagnosis cannot be genetically confirmed. The currently used diagnostic sequencing techniques only allow the detection of point mutations, small deletions or duplications. The question as to whether larger genetic alterations are also involved in the pathophysiology of FMF remains to be answered. To address this question, we used multiplex ligation-dependent probe amplification (MLPA) on a total of 216 patients with FMF symptoms. This careful analysis revealed that not a single deletion/duplication could be detected in this large cohort of patients. This result suggests that single or multiexon MEFV gene copy number changes do not contribute substantially, if at all, to the MEFV mutation spectrum.


Subject(s)
Cytoskeletal Proteins/genetics , Familial Mediterranean Fever/genetics , Ligase Chain Reaction , Point Mutation , Cohort Studies , Female , Humans , Male , Pyrin
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