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Guillaume Martel, Kasia P Cieslak, Ruiyao Huang, Krijn P van Lienden, Jimme K Wiggers, Assia Belblidia, Michel Dagenais, RĂ©al Lapointe, Thomas M van Gulik, Franck Vandenbroucke-Menu
OBJECTIVE: The purpose of this work was to compare measured and estimated volumetry prior to liver resection. METHODS: Data for consecutive patients submitted to major liver resection for colorectal liver metastases at two centres during 2004-2012 were reviewed. All patients underwent volumetric analysis to define the measured total liver volume (mTLV) and measured future liver remnant ratio (mR(FLR)). The estimated total liver volume (eTLV) standardized to body surface area and estimated future liver remnant ratio (eR(FLR)) were calculated...
December 2015: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
Dario Ribero, Marco Amisano, Francesca Bertuzzo, Serena Langella, Roberto Lo Tesoriere, Alessandro Ferrero, Daniele Regge, Lorenzo Capussotti
OBJECTIVES: To determine which method of liver volumetry is more accurate in predicting a safe resection. BACKGROUND: Before major or extended hepatectomy, assessment of the future liver remnant (FLR) is crucial to reduce the risk of postoperative hepatic insufficiency. The FLR volume is usually expressed as the ratio of FLR to nontumorous total liver volume (TLV), which can be measured directly by computed tomography (mTLV) or estimated (eTLV) on the basis of correlation existing with the body surface area...
November 2013: Annals of Surgery
C J Duggan, R A Watson, N B Pride
INTRODUCTION: Subjects with asthma frequently have nasal symptoms and complain of orthopnoea but airflow resistance is usually only assessed during oral breathing and while seated. METHOD: We have used a forced oscillation technique to measure total respiratory resistance (Rrs) at 6Hz during mouth breathing (Rrs,mo) and during nose breathing (Rrs,na) in the sitting and supine postures; resistance of the nasal airway (Rnaw) was estimated as Rrs,na--Rrs,mo. Forced oscillations were applied during normal tidal breathing and the mid-tidal lung volume (MTLV) was determined for each breathing route and posture...
October 2004: Journal of Asthma: Official Journal of the Association for the Care of Asthma
R A Watson, N B Pride
Reduced functional residual capacity (FRC) is consistently found in obese subjects. In 10 obese subjects (mean +/- SE age 49.0 +/- 6 yr, weight 128.4 +/- 8 kg, body mass index 44 +/- 3 kg/m2) without respiratory disease, we examined 1) supine changes in total lung capacity (TLC) and subdivisions, 2) whether values of total respiratory resistance (Rrs) are appropriate for mid-tidal lung volume (MTLV), and 3) estimated resistance of the nasopharyngeal airway (Rnp) in both sitting and supine postures. The results were compared with those of 13 control subjects with body mass indexes of <27 kg/m2...
February 2005: Journal of Applied Physiology
J C Yap, D M Moore, J G Cleland, N B Pride
The mechanisms of orthopnea and the role of changes in respiratory mechanics in left ventricular failure (LVF) are poorly understood. We have measured total respiratory airflow resistance (Rrs) using forced oscillation in the sitting and supine positions in 10 patients with chronic LVF (NYHA II-III) shortly after recovery from acute LVF and in 10 matched control subjects (CON). Seated, the patients with LVF had small lung volumes but no evidence of airway obstruction (mean FEV(1)/FVC, 81%). Mean Rrs at 6 Hz was only slightly higher in LVF (3...
October 2000: American Journal of Respiratory and Critical Care Medicine
S S Morse, N Sakaguchi, S Sakaguchi
Neonatal infection of the mouse T lymphotropic virus (MTLV), a member of herpes viridae, causes various organ-specific autoimmune diseases, such as autoimmune gastritis, in selected strains of normal mice. The infection selectively depletes CD4+ T cells in the thymus and periphery for 2-3 wk from 1 wk after infection. Thymectomy 3 wk after neonatal MTLV infection enhances the autoimmune responses and produces autoimmune diseases at higher incidences and in a wider spectrum of organs than MTLV infection alone...
May 1, 1999: Journal of Immunology: Official Journal of the American Association of Immunologists
S S Morse
Mouse thymic virus (MTLV; murid herpesvirus 3) is a lymphotropic herpesvirus that cytolytically infects developing T lineage lymphocytes in the thymus of neonatal mice. MTLV establishes a persistent infection and can be recovered indefinitely from infected mice, but nothing is known about requirements for this persistent infection. In order to determine whether T lineage lymphocytes are required for infection, young adult athymic nude (nu/nu) mice and euthymic littermates were infected with MTLV and tested for virus shedding...
March 1988: Virology
S S Morse
Mouse thymic necrosis virus (TA), one of two naturally occurring herpesviruses in laboratory mice, was first described in 1961. TA has received relatively little attention even though the virus has been isolated independently from various mouse colonies. This neglect is probably due, at least in part, to the lack of suitable cell culture systems. This review summarizes current knowledge concerning thymic necrosis virus, including new results from the author's laboratory. In vivo, TA causes massive thymic necrosis in newborn mice, with temporary ablation of thymocyte precursors for most T lymphocyte classes except T suppressor cells...
December 1987: Laboratory Animal Science
S S Morse, J E Valinsky
Mouse thymic virus (MTLV; ICTV designation murid herpesvirus 3) infects developing T lymphocytes of neonatal mice, causing thymic necrosis and acute immunosuppression. Infected animals shed virus indefinitely. In the present report, two-color flow cytometric analysis of T lymphocyte subpopulations defined by the markers CD4 (L3T4) and CD8 (Lyt-2) was used to determine whether MTLV was lytic for a specific thymocyte population. At peak necrosis (8-11 d after infection), numbers of CD4+8+ cells in the thymus were reduced by 80% or more as compared with controls, and CD4+8- cells were reduced by greater than 98%...
February 1, 1989: Journal of Experimental Medicine
S S Morse
Mouse thymic virus (MTLV;ICTV designation murid herpesvirus 3) infects developing T lymphocytes of neonatal mice, causing thymic necrosis and acute immunosuppression. Infected animals shed virus indefinitely. However, although transmission in nature is presumably by contact and is likely to involve the oral-nasal route, virtually all experimental studies with MTLV have used systemic (intraperitoneal) inoculation. In order to determine whether systemic inoculation causes artifacts in pathogenesis of the infection, effects of intraperitoneal and oral-nasal inoculation were compared in newborn mice...
November 1989: Laboratory Animal Science
S S Morse
Mouse thymic virus (MTLV; murid herpesvirus 3) is a naturally occurring herpesvirus of mice. Critical variables in an enzyme immunoassay (ELISA) for antibodies to mouse thymic virus (MTLV) were assessed. High protein binding plates proved unsuitable. For storing coated plates, the most consistent results were obtained when coated plates were washed and stored with coating buffer (phosphate buffered saline, PBS) at -70 degrees C. Storage of antigen at -20 degrees C was unsatisfactory, although coated plates could be stored at -20 degrees C for at least 1-2 weeks...
October 1990: Laboratory Animals
S S Morse
Mouse thymic virus (murid herpesvirus-3; MTLV) is a naturally occurring T lymphotropic herpesvirus of mice. We compared the sensitivity of infectivity assay, which tests for induction of thymic necrosis in newborn mice, and an enzyme immunoassay (ELISA)-based modified mouse antibody production (MAP) test. Infection in adult mice was verified by infectivity assay of salivary glands. Approximately ten times as much virus was required to infect adult mice as newborns. No adults became infected at the lowest dose (just below 1 ID50 by thymic necrosis in newborn mice); a dose tenfold higher resulted in both infection and seroconversion in three out of five mice...
April 1990: Journal of Virological Methods
S M Prattis, S S Morse
Mouse thymic virus (MTLV; murid herpesvirus 3) causes T lymphocyte depletion, thymic necrosis and immunosuppression in acutely infected neonatal mice. Infected animals shed virus persistently in saliva for prolonged periods of time. The standard procedure for detection of MTLV in infected mice is an in vivo infectivity assay. A sensitive enzyme linked immunosorbent assay (ELISA) recently has been developed for the detection of antibodies to MTLV. However, a direct test for viral antigen would be desirable in order to identify animals shedding virus, in the event that some infected animals may remain seronegative...
January 1990: Laboratory Animal Science
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