26
|
Thomas C, Hemmes R, Eikelis N, Pathak A, Schlaich M, Lambert G, Lambert E. Sympathetic Nervous Response to Ischaemia-Reperfusion Is Altered in Remote Ischaemic Preconditioning. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.149] [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]
|
27
|
Jewson J, Lambert E, Storr M, Lambert G, Gaida J. The sympathetic nervous system and insulin resistance in achilles tendinopathy. J Sci Med Sport 2015. [DOI: 10.1016/j.jsams.2015.12.367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
28
|
Corcoran S, Sari C, Lambert E, Straznicky N, Hamilton G, Phillips S, Lambert G, Esler M. Droxidopa improves orthostatic intolerance symptoms in low and normal supine blood pressure phenotypes of vasovagal syncope. Auton Neurosci 2015. [DOI: 10.1016/j.autneu.2015.07.147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
29
|
Eikelis N, Hering D, Marusic P, Sari C, Walton A, Phillips S, Lambert E, Duval J, Krum H, Lambert G, Esler M, Schlaich M. The effect of renal denervation on endothelial function and inflammatory markers in patients with resistant hypertension. Int J Cardiol 2015; 188:96-8. [DOI: 10.1016/j.ijcard.2015.04.041] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Accepted: 04/03/2015] [Indexed: 11/26/2022]
|
30
|
Kolbe-Alexander T, Pacheco K, Tomaz S, Karpul D, Lambert E. The relationship between the built environment and habitual levels of physical activity in South African older adults. J Sci Med Sport 2014. [DOI: 10.1016/j.jsams.2014.11.173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
31
|
Hering D, Walton A, Lambert G, Marusic P, Lambert E, Krum H, Esler M, Schlaich M. The Effect of Renal Nerve Ablation on Blood Pressure and Sympathetic Activity One Year Post Procedure. Heart Lung Circ 2013. [DOI: 10.1016/j.hlc.2013.05.064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
32
|
Patel D, Lambert E, Volpp K, Troxel A, van der Merwe L, Wyper L, Maroba J, Loewenstein G. A prospective, randomized study comparing the effectiveness of different types of incentives in increasing physical activity behavior on the Vitality health promotion program. J Sci Med Sport 2012. [DOI: 10.1016/j.jsams.2012.11.844] [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]
|
33
|
Lambert E, Roscoe R, Dugas J, Kolbe-Alexander T, Noach A, Richards L, Maroba J, Patel D. What we can learn from health risk assessment: Meeting physical activity guidelines and clustering of health risk behavior in the Vitality health promotion program. J Sci Med Sport 2012. [DOI: 10.1016/j.jsams.2012.11.125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
34
|
Lambert E, Williams DH, Lynch PB, Hanrahan TJ, McGeady TA, Austin FH, Boland MP, Roche JF. The extent and timing of prenatal loss in gilts. Theriogenology 2012; 36:655-65. [PMID: 16727035 DOI: 10.1016/0093-691x(91)90403-z] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/1990] [Accepted: 07/29/1991] [Indexed: 11/18/2022]
Abstract
The potential litter size of gilts that is based on the ovulation rate is much higher than the actual litter size, which depends on the fertilization rate and subsequent prenatal mortality. Prenatal mortality is divided into embryonic mortality (before Day 30) and fetal mortality (after Day 30). Prenatal loss includes both fertilization failure and prenatal mortality. Crossbred gilts (n = 149) were bred at the first observed estrus after being exposed to the boar at 200 days of age. Time of the first insemination after estrus detection was determined by measurement of vaginal conductivity using a Walsmeta meter. A second insemination was administered either 8 or 16 hours later. Artificial insemination with fresh semen (0 to 3 days old) was used throughout the experiment. Gilts were slaughtered on Day 3 (n = 26), Day 10 (n = 42), Day 30 of gestation (n = 45) or they were allowed to farrow (n = 36). Gilts slaughtered on Day 3 were used to estimate the fertilization rate. Gilts slaughtered on Day 10 and Day 30 were used to calculate embryonic mortality, while fetal mortality was calculated from the gilts that farrowed. The mean (+/-SEM) number of corpora lutea (CL) was 13.15+/-0.46, 13.36+/-0.37 and 12.97+/-0.39 for gilts slaughtered at Days 3, 10 and 30, respectively (P>0.05), and the mean (+/-SEM) number of normal embryos recovered was 11.12+/-0.69, 9.46+/-0.55 and 9.33+/-0.58, respectively. Litter size at parturition was 9.10+/-0.54. There was a significant difference between the number of normal embryos on Day 3 and Day 30 (P=0.05) and also between the number of normal embryos at Day 3 and the number of piglets at term. Ninety percent of the ova were recovered at Day 3. The fertilization rate was calculated either 1) assuming that unrecovered ova had a similar fertilization rate as the recovered ova (FRER=94.5+/-2.0%) or 2) assuming that unrecovered ova were unfertilized (FROR=84.5+/-2.5%). It was concluded that FRER was a more accurate estimation of the fertilization rate. Based on this fertilization rate, embryonic mortality between Day 3 and Day 10 was 20.8+/-8.3%, with an additional 12.5+/-7.1% loss between Day 10 and Day 30, when all gilts were included (P = 0.308). Thus the total prenatal loss, including fertilization failure, up to Day 10 was 26.3% and to Day 30 it was 38.8%. Fetal mortality was 2.2%, giving a total prenatal mortality (excluding fertilization failure) of 35.5% and a prenatal loss of 41%. Most of the prenatal loss was due to embryonic mortality. In those gilts that remained pregnant most of the embryonic loss occurred before Day 10 (19.0+/-6.3%; P=0.003). There was no further loss between Day 10 and 30 of pregnancy. There was a significant difference between the loss from Day 3 to Day 10 compared with the loss from Day 10 to Day 30 (P=0.05); therefore, most of the embryonic loss in pregnant gilts occurred before Day 10. Since fetal mortality was 3.2+/-6.3%, most of the prenatal loss was due to embryonic mortality.
Collapse
|
35
|
Vermeulen D, De Koninck Y, Li Y, Lambert E, Bogaerts W, Baets R, Roelkens G. Reflectionless grating couplers for Silicon-on-Insulator photonic integrated circuits. OPTICS EXPRESS 2012; 20:22278-22283. [PMID: 23037375 DOI: 10.1364/oe.20.022278] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We propose a novel grating coupler design which is inherently reflectionless by focusing the reflected light away from the entrance waveguide. The design rules for this reflectionless grating coupler are explained and the grating coupler design is investigated by means of 3D FDTD simulations for the case of a Silicon-on-Insulator based platform.
Collapse
|
36
|
Demarsy E, Buhr F, Lambert E, Lerbs-Mache S. Characterization of the plastid-specific germination and seedling establishment transcriptional programme. JOURNAL OF EXPERIMENTAL BOTANY 2012; 63:925-39. [PMID: 22048039 DOI: 10.1093/jxb/err322] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Upon imbibition, dry seeds rapidly gain metabolic activity and the switching on of a germination-specific transcriptional programme in the nucleus goes ahead, with the induction of many nucleus-encoded transcripts coding for plastid-localized proteins. Dedifferentiated plastids present in dry seeds differentiate into chloroplasts in cotyledons and into amyloplasts in the root and in the hypocotyl, raising the question of whether the beginning of a new plant's life cycle is also characterized by specific changes in the plastid transcriptional programme. Here the plastid transcriptome is characterized during imbibition/stratification, germination, and early seedling outgrowth. It is shown that each of these three developmental steps is characterized by specific changes in the transcriptome profile, due to differential activities of the three plastid RNA polymerases and showing the integration of plastids into a germination-specific transcriptional programme. All three RNA polymerases are active during imbibition; that is, at 4 °C in darkness. However, activity of plastid-encoded RNA polymerase (PEP) is restricted to the rrn operon. After cold release, PEP changes specificity by also transcribing photosynthesis-related genes. The period of germination and radicle outgrowth is further characterized by remarkable antisense RNA production that diminishes during greening when photosynthesis-related mRNAs accumulate to their highest but to very different steady-state levels. During stratification and germination mRNA accumulation is not paralleled by protein accumulation, indicating that plastid transcription is more important for efficient germination than translation.
Collapse
|
37
|
Lambert E, MacLeod CD, Hall K, Brereton T, Dunn TE, Wall D, Jepson PD, Deaville R, Pierce GJ. Quantifying likely cetacean range shifts in response to global climatic change: implications for conservation strategies in a changing world. ENDANGER SPECIES RES 2011. [DOI: 10.3354/esr00376] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
|
38
|
Lambert E, Dudakem Y, Cheung M, Sari C, Schlaich M, Inman J, Ahimastos A, Eikelis N, Patak A, Grigg L, Lambert G. Sympathetic, endothelial and arterial dysfunction in adult patients with Fontan circulation. Auton Neurosci 2011. [DOI: 10.1016/j.autneu.2011.05.208] [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]
|
39
|
Micheli L, Mountjoy M, Engebretsen L, Hardman K, Kahlmeier S, Lambert E, Ljungqvist A, Matsudo V, McKay H, Sundberg CJ. Fitness and health of children through sport: the context for action. Br J Sports Med 2011; 45:931-6. [PMID: 21836177 DOI: 10.1136/bjsports-2011-090237] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
A growing body of scientific evidence indicates that the declining levels of physical activity and fitness in children and youth are associated with adverse impacts on their health, including rising levels of obesity, diabetes, heart disease, metabolic syndrome and increased risk of sports injury. In response, a number of governmental and non-governmental organisations have instituted programmes to promote health in children and youth through sports and physical activity. Many of these programmes have achieved success in increasing participation in sports and other forms of physical activity and, by extension, improving the health of these young people. These programmes have also been used successfully to enhance the lives of the young participants by means other than improving physical health.
Collapse
|
40
|
Mountjoy M, Andersen LB, Armstrong N, Biddle S, Boreham C, Bedenbeck HPB, Ekelund U, Engebretsen L, Hardman K, Hills AP, Hills A, Kahlmeier S, Kriemler S, Lambert E, Ljungqvist A, Matsudo V, McKay H, Micheli L, Pate R, Riddoch C, Schamasch P, Sundberg CJ, Tomkinson G, van Sluijs E, van Mechelen W. International Olympic Committee consensus statement on the health and fitness of young people through physical activity and sport. Br J Sports Med 2011; 45:839-48. [PMID: 21836168 DOI: 10.1136/bjsports-2011-090228] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
41
|
Mountjoy M, Andersen LB, Armstrong N, Biddle S, Boreham C, Bedenbeck HPB, Ekelund U, Engebretsen L, Hardman K, Hills AP, Hills A, Kahlmeier S, Kriemler S, Lambert E, Ljungqvist A, Matsudo V, McKay H, Micheli L, Pate R, Riddoch C, Schamasch P, Sundberg CJ, Tomkinson G, van Sluijs E, van Mechelen W. International Olympic Committee consensus statement on the health and fitness of young people through physical activity and sport. Br J Sports Med 2011. [PMID: 21836168 DOI: 10.1136/bjsports-2011–090228] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
42
|
Draper C, Nemutandani S, Grimsrud A, Rudolph M, Kolbe-Alexander T, de Kock L, Lambert E. Qualitative evaluation of a physical activity-based chronic disease prevention program in a low-income, rural South African setting. Rural Remote Health 2010. [DOI: 10.22605/rrh1467] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
|
43
|
Taylor D, Pallos J, Lambert E, Amore A, Parker A, Moffitt H, Smith D, Runne H, Gokce O, Kuhn A, Xiang Z, Maxwell M, Reeves S, Bates G, Néri C, Thompson L, Marsh L, Kazantsev A, Luthi-Carter R. A10 SIRT2 inhibition achieves neuroprotection by decreasing sterol biosynthesis. J Neurol Psychiatry 2010. [DOI: 10.1136/jnnp.2010.222570.10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
44
|
Dawood T, Barton D, Lambert E, Laude D, Elghozi JL, Socratous F, Hennebry S, Lambert G. 1. Clinical. Auton Neurosci 2009. [DOI: 10.1016/j.autneu.2009.05.097] [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]
|
45
|
Ausset S, Auroy Y, Lambert E, Vest P, Plotton C, Rigal S, Lenoir B, Benhamou D. Cardiac troponin I release after hip surgery correlates with poor long-term cardiac outcome. Eur J Anaesthesiol 2007; 25:158-64. [PMID: 17666156 DOI: 10.1017/s0265021507001202] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND OBJECTIVE The aim of this study was to assess the incidence of perioperative myocardial damage detected by serial measurements of troponin I after hip surgery and its association with late cardiovascular outcome. METHODS Troponin I was measured during the first three postoperative days in 88 consecutive patients undergoing hip surgery. Values above the 99th percentile (0.08 ng mL(-1)) were considered positive. Major cardiac events (cardiac death, myocardial infarction and cardiac failure) were recorded during hospital stay and 1 yr after surgery. RESULTS Eleven patients (12.5%) exhibited elevated troponin I levels during hospital stay. Nine of them remained asymptomatic. During follow-up, 45% of them (5/11) suffered from a major cardiac event vs. 4% (3/76) for patients with normal postoperative troponin I levels (P = 0.0006). All-cause mortality rate was 36% (4/11) at 1 yr vs. 7% (5/71, P = 0.0131). Using multivariate Cox regression analysis adjusted for baseline data, independent factors associated with the occurrence of a cardiac event were troponin I elevation (OR=17.4-CI 95% 3.7-82) and age (OR=1.1 yr(-1)-CI 95% 1.01-1.21). Independent factors for all-cause mortality were troponin I elevation (OR=41.4-CI 95% 5.4-320.4), and age (OR=1.3 yr(-1)-CI 95% 1.1-1.4). CONCLUSION Troponin I release is common after hip surgery and is associated with a 10-fold increased incidence of long-term major cardiac events as compared to patients with normal troponin I levels (45% vs. 4%).
Collapse
|
46
|
Dassé E, Bridoux L, Baranek T, Lambert E, Salesse S, Sowa ML, Martiny L, Trentesaux C, Petitfrère E. Tissue inhibitor of metalloproteinase-1 promotes hematopoietic differentiation via caspase-3 upstream the MEKK1/MEK6/p38alpha pathway. Leukemia 2007; 21:595-603. [PMID: 17301822 DOI: 10.1038/sj.leu.2404540] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Besides its matrix metalloproteinases inhibitory activity, TIMP-1 exhibits other biological activities such as cell survival and proliferation. The intracellular signalling pathway elicited by TIMP-1 begins to be elucidated. We have shown previously that the caspase-3 and the p38alpha MAP kinase were activated during TIMP-1-induced UT-7 cells erythroid differentiation. In this study, we demonstrated that TIMP-1 differentiating effect can be extended to the IL-3-dependent myeloid murine 32D cell line and human erythroid progenitors derived from cord blood CD34(+) cells. By performing small interfering RNA transfection and using chemical inhibitors, we evidenced that caspase-3 was involved in TIMP-1 differentiating effect. We then identified the MEKK1 kinase as a caspase-3 substrate and demonstrated that the MEKK1/MEK6/p38alpha pathway was activated downstream the caspase-3 in TIMP-1-induced hematopoietic differentiation.
Collapse
|
47
|
Lambert E, Geelen D. Cryopreservation of hairy root cultures from Maesa lanceolata. COMMUNICATIONS IN AGRICULTURAL AND APPLIED BIOLOGICAL SCIENCES 2007; 72:225-228. [PMID: 18018892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
|
48
|
Debien B, Clapson P, Lambert E, Lenoir B, Perez JP, Pats B. Les complications cardiovasculaires aiguës de la cocaïne. À propos de deux observations. ACTA ACUST UNITED AC 2006; 25:397-400. [PMID: 16426803 DOI: 10.1016/j.annfar.2005.11.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2005] [Accepted: 11/17/2005] [Indexed: 11/16/2022]
Abstract
Concerning any socioprofessional category, some addictive drugs like cocaine are responsible for many complications. The authors relate two case reports of young patients who suffered from cardiovascular accidents due to this drug. The first one was diagnosed with an ischemic stroke caused by carotid artery dissection and a leg distal vascular obliteration, the second one with a myocardial infarction with transient left ventricular dysfunction. Through these two case reports, the authors take stock of the pathophysiological and therapeutic knowledge of cardiovascular accidents after cocaine intake.
Collapse
|
49
|
Micklesfield L, Levitt N, Dhansay M, Norris S, van der Merwe L, Lambert E. Maternal and early life influences on calcaneal ultrasound parameters and metacarpal morphometry in 7- to 9-year-old children. J Bone Miner Metab 2006; 24:235-42. [PMID: 16622737 DOI: 10.1007/s00774-005-0677-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2005] [Accepted: 12/08/2005] [Indexed: 11/26/2022]
Abstract
We investigated the relationship between maternal and early life influences, calcaneal ultrasound parameters, and metacarpal morphometry in 7- to 9-year-old children (n = 109) of mixed ancestral origin from a working class community. Their mothers had participated in a nutrition and pregnancy study at the time of the birth. Demographic and maternal data were collected. Anthropometry was assessed. Broadband ultrasound attenuation (BUA) and speed of sound (SOS) were measured in the children and a subsample of the mothers (n = 94), using calcaneal ultrasound. Hand radiographs were used to measure metacarpal morphometry. There was no relationship between the ultrasound parameters, birthweight, current weight, or height. The ponderal index was correlated with BUA (r = 0.25; P = 0.036). BUA was lower in children whose mothers smoked during pregnancy compared to children whose mothers did not smoke (P = 0.054). Children whose mothers consumed alcohol during pregnancy had a lower Barnett-Nordin metacarpal index compared to children whose mothers did not consume alcohol (P < 0.05), after covarying for sex, age, gestational age, weight, and height of the child. Children's BUA was negatively correlated with housing density (r = -0.23; P = 0.021). In this study, we found an association between maternal and early life influences on calcaneal ultrasound parameters and metacarpal morphometry in prepubertal children, an association that was also influenced by sociodemographic and environmental factors.
Collapse
|
50
|
Mérat S, Perrier E, Lambert E, Lenoir B, Bonnevie L, Pats B. [Anaesthesia and amiodarone-associated hyperthyroidism]. ANNALES FRANCAISES D'ANESTHESIE ET DE REANIMATION 2004; 23:517-21. [PMID: 15158246 DOI: 10.1016/j.annfar.2004.02.050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2003] [Accepted: 02/09/2004] [Indexed: 04/29/2023]
Abstract
Amiodarone can induce severe hyperthyroidism that justifies its withdrawal and initiation of antithyroid drugs. Impossibility to stop amiodarone, failure to control hyperthyroidism and unfavourable evolution can lead to thyroidectomy. Cardiac manifestations, persistence of hyperthyroidism and interactions between amiodarone and anaesthetic or haemodynamic drugs may contraindicate anaesthesia. We report nine consecutive cases of amiodarone-associated hyperthyroidism that prompted us to perform thyroidectomy under general anaesthesia. The features and anaesthetic data of patients were noted. The antithyroid medical treatment failed in all patients. After thyroidectomy, evolution was favourable in all nine cases, without any intra or postoperative complication, in spite of the extent of hyperthyroidism and the severity of the associated cardiac problems. Despite potential high risks, thyroidectomy for amiodarone-induced hyperthyroidism does not seem to increase morbidity or mortality and allows a quick return to euthyroidism and reintroduction of amiodarone.
Collapse
|