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Considine J, Kropman M, Kelly E, Winter C. Effect of emergency department fast track on emergency department length of stay: a case-control study. Emerg Med J 2008; 25:815-9. [DOI: 10.1136/emj.2008.057919] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Bauer C, Winter C, Hentz JG, Ducrocq X, Steib A, Dupeyron JP. Bronchial blocker compared to double-lumen tube for one-lung ventilation during thoracoscopy. Acta Anaesthesiol Scand 2008. [DOI: 10.1111/j.1399-6576.2001.450218.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Crofts JF, Bartlett C, Ellis D, Winter C, Donald F, Hunt LP, Draycott TJ. Patient-actor perception of care: a comparison of obstetric emergency training using manikins and patient-actors. Qual Saf Health Care 2008; 17:20-4. [DOI: 10.1136/qshc.2006.021873] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Taut K, Winter C, Briles DE, Paton JC, Christman JW, Maus R, Baumann R, Welte T, Maus UA. Macrophage turnover kinetics in the lungs of mice infected with Streptococcus pneumoniae. Pneumologie 2007. [DOI: 10.1055/s-2007-1032294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Winter C, Taut K, Srivastava M, Länger F, Mack M, Briles DE, Paton JC, Maus R, Welte T, Gunn MD, Maus UA. Lung-specific overexpression of CC chemokine ligand (CCL2) 2 enhances the host defense to Streptococcus pneumoniae infection in mice: role of the CCL2-CCR2 axis. Pneumologie 2007. [DOI: 10.1055/s-2007-1032293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Crofts JF, Ellis D, Draycott TJ, Winter C, Hunt LP, Akande VA. Change in knowledge of midwives and obstetricians following obstetric emergency training: a randomised controlled trial of local hospital, simulation centre and teamwork training. BJOG 2007; 114:1534-41. [PMID: 17903231 DOI: 10.1111/j.1471-0528.2007.01493.x] [Citation(s) in RCA: 145] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVES To explore the effect of obstetric emergency training on knowledge. Furthermore, to assess if acquisition of knowledge is influenced by the training setting or teamwork training. DESIGN A prospective randomised controlled trial. SETTING Training was completed in six hospitals in the South West of England, UK and at the Bristol Medical Simulation Centre, UK. POPULATION Midwives and obstetric doctors working for the participating hospitals were eligible for inclusion in the study. A total of 140 participants (22 junior and 23 senior doctors, 47 junior and 48 senior midwives) were studied. METHODS Participants were randomised to one of four obstetric emergency training interventions: (1) 1-day course at local hospital, (2) 1-day course at simulation centre, (3) 2-day course with teamwork training at local hospital and (4) 2-day course with teamwork training at simulation centre. MAIN OUTCOME MEASURES Change in knowledge was assessed by a 185 question Multiple-Choice Questionnaire (MCQ) completed up to 3 weeks before and 3 weeks after the training intervention. RESULTS There was a significant increase in knowledge following training; mean MCQ score increased by 20.6 points (95% CI 18.1-23.1, P < 0.001). Overall, 123/133 (92.5%) participants increased their MCQ score. There was no significant effect on the MCQ score of either the location of training (two-way analysis of variants P = 0.785) or the inclusion of teamwork training (P = 0.965). CONCLUSIONS Practical, multiprofessional, obstetric emergency training increased midwives' and doctors' knowledge of obstetric emergency management. Furthermore, neither the location of training, in a simulation centre or in local hospitals, nor the inclusion of teamwork training made any significant difference to the acquisition of knowledge in obstetric emergencies.
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Winter C, Joel D, Klavir O, Mundt A, Jalali R, Flash S, Klein J, Harnack D, Morgenstern R, Juckel G, Kupsch A. Modulation of subthalamic nucleus activity differentially affects compulsive behavior in rats. PHARMACOPSYCHIATRY 2007. [DOI: 10.1055/s-2007-991853] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Mundt A, Klein J, Heinz A, Morgenstern R, Juckel G, Kupsch A, Winter C. Deep brain stimulation of the nucleus accumbens core and shell differentially reduce quinpirole induced compulsive checking behavior in rats. PHARMACOPSYCHIATRY 2007. [DOI: 10.1055/s-2007-991873] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Djodari-Irani A, Klein J, Heinz A, Morgenstern R, Winter C. Deep brain stimulation of the globus pallidus differentially affects compulsive checking behavior in rats. PHARMACOPSYCHIATRY 2007. [DOI: 10.1055/s-2007-991850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Raabe EH, Laudenslager M, Winter C, Wasserman N, Cole K, LaQuaglia M, Maris DJ, Mosse YP, Maris JM. Prevalence and functional consequence of PHOX2B mutations in neuroblastoma. Oncogene 2007; 27:469-76. [PMID: 17637745 DOI: 10.1038/sj.onc.1210659] [Citation(s) in RCA: 113] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
PHOX2B is a homeodomain-containing protein that is involved in the development of the peripheral nervous system and is the major disease gene for the rare congenital breathing disorder congenital central hypoventilation syndrome (CCHS). Germline PHOX2B alterations were also recently discovered in neuroblastoma cases with CCHS and/or Hirschsprung disease, but a comprehensive survey for mutational frequency and functional consequence has not been performed. We therefore studied a large panel of hereditary neuroblastomas to understand the frequency and functional effects of PHOX2B mutations. Three of 47 individuals with presumed genetic predisposition to neuroblastoma showed a germline PHOX2B mutation (6.4%). Mutations were also discovered in 2 of 30 human neuroblastoma-derived cell lines, but none of 86 primary tumors from patients with sporadically occurring neuroblastoma. The vast majority of primary tumors showed abundant PHOX2B mRNA expression relative to the remainder of the transcriptome. Consistent with its role as an important neurodevelopmental gene, forced overexpression of wild-type PHOX2B in neuroblastoma cell lines suppressed cell proliferation and synergized with all-trans retinoic acid to promote differentiation. Patient-derived mutant PHOX2B constructs retained the ability to suppress cellular proliferation, but were not able to promote differentiation or activate expression of a known PHOX2B target gene in vitro. These findings show that PHOX2B alterations are a rare cause of hereditary neuroblastoma, but disruption of this neurodevelopmental pathway can interfere with transcription-dependent terminal differentiation. These data also suggest that the genetics of neuroblastoma initiation are complex, and highlight genes involved in normal noradrenergic development as candidate predisposition genes.
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Winter C, Macfarlane A, Deneux-Tharaux C, Zhang WH, Alexander S, Brocklehurst P, Bouvier-Colle MH, Prendiville W, Cararach V, van Roosmalen J, Berbik I, Klein M, Ayres-de-Campos D, Erkkola R, Chiechi LM, Langhoff-Roos J, Stray-Pedersen B, Troeger C. Variations in policies for management of the third stage of labour and the immediate management of postpartum haemorrhage in Europe. BJOG 2007; 114:845-54. [PMID: 17567419 PMCID: PMC1974828 DOI: 10.1111/j.1471-0528.2007.01377.x] [Citation(s) in RCA: 94] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/26/2007] [Indexed: 01/15/2023]
Abstract
BACKGROUND The EUropean Project on obstetric Haemorrhage Reduction: Attitudes, Trial, and Early warning System (EUPHRATES) is a set of five linked projects, the first component of which was a survey of policies for management of the third stage of labour and immediate management of postpartum haemorrhage following vaginal birth in Europe. OBJECTIVES The objectives were to ascertain and compare policies for management of the third stage of labour and immediate management of postpartum haemorrhage in maternity units in Europe following vaginal birth. DESIGN Survey of policies. SETTING The project was a European collaboration, with participants in 14 European countries. SAMPLE All maternity units in 12 countries and in selected regions of two countries in Europe. METHODS A postal questionnaire was sent to all or a defined sample of maternity units in each participating country. MAIN OUTCOME MEASURES Stated policies for management of the third stage of labour and the immediate management of postpartum haemorrhage. RESULTS Policies of using uterotonics for the management of the third stage were widespread, but policies about agents, timing, clamping and cutting the umbilical cord and the use of controlled cord traction differed widely. For immediate management of postpartum haemorrhage, policies of massaging the uterus were widespread. Policies of catheterising the bladder, bimanual compression and in the choice of drugs administered were much more variable. CONCLUSIONS Considerable variations were observed between and within countries in policies for management of the third stage of labour. Variations were observed, but to a lesser extent, in policies for the immediate management of postpartum haemorrhage after vaginal birth. In both cases, policies about the pharmacological agents to be used varied widely.
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Koch J, Brockmann SO, Winter C, Kimmig P, Stark K. Significant increase of hantavirus infections in Germany since the beginning of 2007. ACTA ACUST UNITED AC 2007; 12:E070503.1. [PMID: 17868605 DOI: 10.2807/esw.12.18.03185-en] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Hantaviruses (family Bunyaviridae) are rodent-borne pathogens and occur worldwide. Hantavirus infections in Europe and Asia can result in a hemorrhagic fever with renal syndrome (HFRS) of different severity.
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Müller M, Winter C, Hüttmann G, Laqua H, Hoerauf H. Evaluation of cyclophotocoagulation effects with 1310-nm contact optical coherence tomography. Curr Eye Res 2007; 32:171-6. [PMID: 17364750 DOI: 10.1080/02713680601147708] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
PURPOSE The aim of this pilot study was to evaluate whether contact optical coherence tomography (OCT) allows visualization of the effects of cyclophotocoagulation. METHODS In this pilot study, transscleral contact OCT images (1310-nm wavelength) were generated prior to and immediately after conventional transscleral diode laser cyclophotocoagulation in three eyes of three patients who were suffering from uncontrolled glaucoma. RESULTS In the region of the ciliary body, transscleral contact OCT revealed two layers: (i) a superficial thick hyperreflective complex representing conjunctiva, the Tenon capsule, episclera, and sclera; and (ii) a thinner hyporeflective layer representing the ciliary body. The ciliary body could be differentiated from the overlying sclera by its marked drop in reflectivity. After cyclophotocoagulation, a marked increase of reflectivity in the treated area of the ciliary body was identifiable. After treatment, the distinct border between the hyperreflective scleral complex disappeared, and the region of the ciliary body appeared hyperreflective. The optical properties of the overlying sclera remained unchanged. On corresponding averaged A-scan images, scleral thickness appeared to be slightly increased, whereas ciliary body thickness remained unchanged. CONCLUSIONS This pilot study demonstrates the capability of contact OCT for allowing visualization of changes in the ciliary body after transscleral cyclophotocoagulation (TSCPC). Further investigations are planned to clarify the complete significance of these data.
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Hoerauf H, Müller M, Hüttmann G, Winter C, Schlote T. Real-time imaging of transscleral diode laser cyclophotocoagulation by optical coherence tomography. Graefes Arch Clin Exp Ophthalmol 2006; 245:385-90. [PMID: 17006680 DOI: 10.1007/s00417-006-0421-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2006] [Revised: 06/20/2006] [Accepted: 07/13/2006] [Indexed: 11/26/2022] Open
Abstract
PURPOSE To present optical coherence tomography (OCT) for real-time imaging of cyclophotocoagulation effects. METHODS In a pilot study, real-time transscleral OCT images were generated during diode laser cyclophotocoagulation in four eyes of four patients suffering from uncontrolled glaucoma using a specially designed contact applicator containing the OCT fiber, a focussing fiber optic and the fiber of the diode laser. RESULTS When the contact system was used, two layers could be differentiated: a superficial thick hyperreflective complex representing conjunctiva, Tenon's capsule, episclera and sclera, and a thinner hyporeflective layer representing the ciliary body. During cyclophotocoagulation, real-time OCT showed a clear and sudden thickening of the ciliary body in the treated area. CONCLUSION This new OCT device represents a first step towards visual, real-time imaging of cyclophotocoagulation. After further adaptation of the delivery system, further trials are needed to correlate OCT findings with aqueous production and intraocular pressure.
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Kovacikova J, Winter C, Loffing-Cueni D, Loffing J, Finberg KE, Lifton RP, Hummler E, Rossier B, Wagner CA. The connecting tubule is the main site of the furosemide-induced urinary acidification by the vacuolar H+-ATPase. Kidney Int 2006; 70:1706-16. [PMID: 16985514 DOI: 10.1038/sj.ki.5001851] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Final urinary acidification is achieved by electrogenic vacuolar H(+)-ATPases expressed in acid-secretory intercalated cells (ICs) in the connecting tubule (CNT) and the cortical (CCD) and initial medullary collecting duct (MCD), respectively. Electrogenic Na(+) reabsorption via epithelial Na(+) channels (ENaCs) in the apical membrane of the segment-specific CNT and collecting duct cells may promote H(+)-ATPases-mediated proton secretion by creating a more lumen-negative voltage. The exact localization where this supposed functional interaction takes place is unknown. We used several mouse models performing renal clearance experiments and assessed the furosemide-induced urinary acidification. Increasing Na(+) delivery to the CNT and CCD by blocking Na(+) reabsorption in the thick ascending limb with furosemide enhanced urinary acidification and net acid excretion. This effect of furosemide was abolished with amiloride or benzamil blocking ENaC action. In mice deficient for the IC-specific B1 subunit of the vacuolar H(+)-ATPase, furosemide led to only a small urinary acidification. In contrast, in mice with a kidney-specific inactivation of the alpha subunit of ENaC in the CCD and MCD, but not in the CNT, furosemide alone and in combination with hydrochlorothiazide induced normal urinary acidification. These results suggest that the B1 vacuolar H(+)-ATPase subunit is necessary for the furosemide-induced acute urinary acidification. Loss of ENaC channels in the CCD and MCD does not affect this acidification. Thus, functional expression of ENaC channels in the CNT is sufficient for furosemide-stimulated urinary acidification and identifies the CNT as a major segment in electrogenic urinary acidification.
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Attilakos G, Sibanda T, Winter C, Johnson N, Draycott T. A randomised trial of a new handheld vacuum extraction device. Author's Reply. BJOG 2006. [DOI: 10.1111/j.1471-0528.2006.00907.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Niehaus L, Boelmanns K, Schott B, Glaser M, Winter C, Steinke R. Assessment of nigrostriatal damage in schizophrenia using transcranial sonography and dopamin transporter imaging. AKTUELLE NEUROLOGIE 2006. [DOI: 10.1055/s-2006-953368] [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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Attilakos G, Sibanda T, Winter C, Johnson N, Draycott T. A randomised controlled trial of a new handheld vacuum extraction device. BJOG 2005; 112:1510-5. [PMID: 16225571 DOI: 10.1111/j.1471-0528.2005.00729.x] [Citation(s) in RCA: 85] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To evaluate the effectiveness of a new handheld vacuum delivery device. DESIGN Randomised controlled trial. SETTING Southmead Hospital, Bristol, UK. POPULATION One hundred and ninety-four women requiring delivery with vacuum extraction. METHODS Women were recruited into the study while still in early labour. If during delivery, vacuum extraction was indicated they were then randomly allocated to either a new handheld vacuum device, the Kiwi Omnicup, or to a 'standard' vacuum cup selected by the obstetrician. The 'standard group' consisted of the silastic (66/98, 67%) or the metal cups (32/98, 33%). Study data were recorded at completion of the delivery and at 24-48 hours. An additional brief symptom questionnaire was completed by the mother at 10 days postnatally. Statistical analyses were done on an 'intention-to-treat' basis. MAIN OUTCOME MEASURES The primary outcome was the successful completion of delivery with the allocated instrument. Secondary outcomes were substantial fetal scalp trauma and substantial maternal trauma. RESULTS The Omnicup was associated with a significantly higher failure rate than the standard cup [34%vs 21%, odds ratio (OR) = 1.9 (1.01-3.6)]. This difference persisted after adjusting for confounding factors [adjusted OR = 2.25 (1.01-5.0)] and resulted in significantly more forceps deliveries in the Kiwi Omnicup group [22%vs 10%, unadjusted OR = 2.5 (1.1-5.5)]. The caesarean section rates were similar in both groups [9.4%vs 8.2%, OR = 1.2 (0.4-3.2)]. Rates of substantial scalp trauma and maternal trauma were similar in both groups. However, there were more cases of jaundice in the standard cup group [2.3%vs 12.0%, unadjusted OR = 0.18 (0.04-0.82) and adjusted OR = 0.10 (0.01-0.88)]. CONCLUSIONS The Omnicup is not as successful at achieving a vaginal delivery as the combination of the currently used vacuum cups.
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Attiyeh EF, Mosse YP, Wang Q, Winter C, Khazi D, Hii G, McGrady PW, Matthay KK, London WB, Maris JM. Chromosome arm 11q deletion predicts for neuroblastoma outcome: A Children’s Oncology Group study. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.6] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Harnack D, Meissner W, Baer P, Müller WD, Sohr R, Winter C, Morgenstern R, Kupsch A. Langzeit-DBS des Nucleus subthalamicus im Parkinson-Modell der Ratte – Methodische Grundlagen für eine neuroprotektive Studie. AKTUELLE NEUROLOGIE 2005. [DOI: 10.1055/s-2005-866610] [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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Gessner R, Winter C, Rösch P, Schmitt M, Petry R, Kiefer W, Lankers M, Popp J. Identification of Biotic and Abiotic Particles by Using a Combination of Optical Tweezers and In Situ Raman Spectroscopy. Chemphyschem 2004; 5:1159-70. [PMID: 15446738 DOI: 10.1002/cphc.200400026] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A highly versatile setup, which introduces an optical gradient trap into a Raman spectrometer, is presented. The particular configuration, which consists of two lasers, makes trapping independent from the Raman excitation laser and allows a separate adjustment of the trapping and excitation wavelengths. Thus, the excitation wavelength can be chosen according to the needs of the application. We describe the successful application of an optical gradient trap on transparent as well as on reflective, metal-coated microparticles. Raman spectra were recorded from optically trapped polystyrene beads and from single biological cells (e.g., erythrocytes, yeast cells). Also, metal-coated microparticles were trapped and used as surface enhanced Raman spectroscopy (SERS) substrates for tests on yeast cells. Furthermore, the optical gradient trap was combined with a SERS fiber probe. Raman spectra were recorded from trapped red blood cells using the SERS fiber probe for excitation.
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Pape S, Müller M, Hoerauf H, Geerling G, Winter C, Laqua H. 1-Jahres-Ergebnisse funktionierender Sickerkissen in der OCT-Darstellung. Klin Monbl Augenheilkd 2004. [DOI: 10.1055/s-2004-828738] [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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Welzel J, Reinhardt C, Lankenau E, Winter C, Wolff HH. Changes in function and morphology of normal human skin: evaluation using optical coherence tomography. Br J Dermatol 2004; 150:220-5. [PMID: 14996091 DOI: 10.1111/j.1365-2133.2004.05810.x] [Citation(s) in RCA: 93] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Optical coherence tomography (OCT) is a noninvasive morphological method for investigating human skin. It allows high-resolution in vivo imaging of inflammatory skin diseases and tumours. Because it is a newly developed method, systematic studies on standardization and on evaluation of factors influencing the representation of the skin have not yet been performed. OBJECTIVES In this study, normal human skin was treated with various external stimuli which induce changes of function and morphology. Changes in stratum corneum thickness as well as changes induced by pigmentation, oedema and erythema were investigated using OCT. METHODS Healthy skin of human volunteers was treated with tape stripping, ultraviolet A irradiation, water, histamine, nicotinic acid and various ointments. RESULTS In the tape stripping experiment, the thickness of the horny layer was quantified and monitored. Pigmentation increased the light attenuation of the tissue, whereas hydration and erythema led to a slight decrease of scattering. Topical treatment of the skin gave a nonspecific increase of penetration depth of the light due to the lower reflectivity of the surface. CONCLUSIONS There are various physiological conditions which influence optical properties of the skin. These parameters should be considered when performing standardized OCT studies.
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Lastere S, Dalban C, Collin G, Descamps D, Girard PM, Clavel F, Costagliola D, Brun-Vezinet F, Brun-Vezinet F, Clavel F, Costagliola D, Dalban C, Girard PM, Matheron S, Meynard JL, Morand-Joubert L, Peytavin G, Vray M, Beguinot I, Waldner A, Beumont M, Semaille C, Bentata M, Berlureau P, Gérard L, Molina JM, Hor R, Bayol-Honnet G, Lascoux-Combe C, Drobacheff C, Hoen B, Dupon M, Lacut JY, Goujard C, Rousseau C, Vincent V, Diemer M, Lepeu G, Zerazhi H, de Truchis P, Berthé H, Jeantils V, Tazi CT, Vittecoq D, Escaut L, Dupont B, Nait-Ighil L, Rozenbaum W, Nguyen TH, Boué F, Galanaud P, Kazatchkine M, Piketty C, Bernasconi C, Salmon-Ceron D, Michon C, Chandemerle C, Lascaux AS, Magnier JD, Schneider L, Ait-Mohand H, Simon A, Herson S, Bollens D, Picard O, Tangre P, Bonarek M, Morlat P, Trépo C, Cotte L, Gastaut JA, Poizot-Martin I, Moran G, Masson S, Bennai Y, Belarbi L, Prevot MH, Fournier I, Reynes J, Baillat V, Raffi F, Esnault JL, Ceppi C, Cassuto JP, Arvieux C, Chapplain JM, Rey D, Krantz V, Besnier JM, Bastides F, Obadia M, Aquilina C, Bazin C, Verdon R, Piroth L, Grappin M, Sissoko D, Valette M, May T, Burty C, Debab Y, Caron F, Elharrar B, Launay O, Winter C, Chapuis L, Auperin I, Gilquin J. Impact of Insertions in the HIV-1 P6 Ptapp Region on the Virological Response to Amprenavir. Antivir Ther 2004. [DOI: 10.1177/135965350400900215] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We evaluated the impact of genetic changes within p6Gag gene on the virological response (VR, mean decrease in plasma viral load at week 12) to unboosted amprenavir (APV). Gag-protease fragments, including gag p2, p7, p1, p6 regions and whole protease (PR) were sequenced from baseline plasma specimens of 84 highly pre-treated but APV-naive patients included in the NARVAL (ANRS 088) trial. The correlation between baseline p6Gag polymorphism, PR mutations, baseline characteristics and VR to APV was analysed in univariate analysis. Insertions (P459Ins) within p6 protein, leading to partial or complete duplication of the PTAPP motif, were significantly associated with a decreased VR (P459Ins versus wild-type; –0.3 ±0.8 vs –1.1 ±1.2 log copies/ml, P=0.007) and were more frequent when the V82A/F/T/S PR mutation was present ( P=0.020). In multivariate analysis, after adjustment on the predictive factors of the VR in the NARVAL trial and on the PR mutations linked with response, there was a strong trend to an association ( P=0.058) between the presence of P459Ins and an altered VR. In conclusion, these results suggest that insertions in the p6 region of HIV-1 gag gene may affect the VR, in highly pre-treated patients receiving an unboosted APV-containing regimen.
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Lee T, Kupsch A, Juckel G, Morgenstern R, Winter C. Intracranial self-stimulation behaviour in rats elicited by STN-stimulation. AKTUELLE NEUROLOGIE 2004. [DOI: 10.1055/s-2004-833145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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