26
|
van den Berg M. Amount (activity and mobility using technology) rehabilitation trial: Technologies used and participant perceptions in the inpatient setting. Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.818] [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]
|
27
|
Morris C, Barr C, van den Berg M, George S, Crotty M. Clinician perspectives of an avatar-directed scheduling and memory aid. Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.1203] [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]
|
28
|
Thompson KR, Clarkson L, Riley CB, van den Berg M. Horse-keeping practices in Australia: findings from a national online survey of horse owners. Aust Vet J 2018; 95:437-443. [PMID: 29076216 DOI: 10.1111/avj.12639] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 12/12/2016] [Accepted: 02/13/2017] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To gain an understanding of general horse-keeping practices in Australia, including shelter, social contact, exercise, watering and supplementary feeding. METHODS An online survey was conducted with 505 owners in relation to one 'representative' horse in their care. RESULTS The majority (83%) of horses were managed at pasture. Approximately one-quarter of those horses were housed alone (26%) or with one companion animal (27%). If horses were confined to a stable or small yard, the most recorded means of exercise was riding (65%) at a daily frequency (60%). Over half of the horse owners provided water in a trough or drinker with an automatic refill system (58%) and most horse owners supplied hay to their horses (82%), most commonly in combination with grazing. Areas of potential concern included one-quarter of stabled horses being prevented from unmediated social and physical contact with conspecifics and one-fifth of stabled horses being exercised less than daily. CONCLUSION The horse-keeping profile in this study should be considered in the public communication of guidelines as well as interactions between veterinarians and clients.
Collapse
|
29
|
van den Berg M, Giagos V, Lee C, Brown W, Cawdell-Smith A, Hinch G. The influence of odour, taste and nutrients on feeding behaviour and food preferences in horses. Appl Anim Behav Sci 2016. [DOI: 10.1016/j.applanim.2016.08.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
30
|
van den Berg M, Giagos V, Lee C, Brown W, Hinch G. Acceptance of novel food by horses: The influence of food cues and nutrient composition. Appl Anim Behav Sci 2016. [DOI: 10.1016/j.applanim.2016.07.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
31
|
van den Berg M, Giagos V, Lee C. Spatial memory or food cues; which do horses use to locate preferred forage patches? J Vet Behav 2016. [DOI: 10.1016/j.jveb.2016.08.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
32
|
Newman MA, Dawes H, van den Berg M, Wade DT, Burridge J, Izadi H. Can aerobic treadmill training reduce the effort of walking and fatigue in people with multiple sclerosis: a pilot study. Mult Scler 2016; 13:113-9. [PMID: 17294619 DOI: 10.1177/1352458506071169] [Citation(s) in RCA: 111] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Impaired mobility in multiple sclerosis (MS) is associated with high-energy costs and effort when walking, gait abnormalities, poor endurance and fatigue. This repeated measures trial with blinded assessments investigated the effect of treadmill walking at an aerobic training intensity in 16 adults with MS. The intervention consisted of 12 sessions of up to 30 minutes treadmill training (TT), at 55–85% of age-predicted maximum heart rate. The primary outcome measure was walking effort, measured by oxygen consumption (mL/kg per metre), during treadmill walking at comfortable walking speed (CWS). Associated changes in gait parameters using the ‘Gait-Rite’ mat, 10-m time and 2-minute distance, and Fatigue Severity Scale were examined. Following training, oxygen consumption decreased at rest (P = 0.008), CWS increased (P = 0.002), and 10-m times (P = 0.032) and walking endurance (P = 0.020) increased. At increased CWS, oxygen consumption decreased (P = 0.020), with a decreased time spent in stance in the weaker leg (P = 0.034), and a greater stride distance with the stronger leg (P = 0.044). Reported fatigue levels remained the same. Aerobic TT presents the opportunity to alter a motor skill and reduce the effort of walking, whilst addressing cardiovascular de-conditioning, thereby, potentially reducing effort and fatigue for some people with MS.
Collapse
|
33
|
de Kruif A, op den Kelder-Verstraten I, Derks M, van den Berg M, de Vries Y, Kamps L, Winkels R, de Boer M, Visser M, Kampman E, Westerman M. 1960 The perceptions of women with breast cancer during treatment with chemotherapy on changes in weight; a mixed methods approach. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30908-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
34
|
Hong SH, Bang EN, Lim ST, Lee JY, Yang SJ, Litnovsky A, Hellwig M, Matveev D, Komm M, van den Berg M, Lho T, Park CR, Kim GH. Preliminary test results on tungsten tile with castellation structures in KSTAR. FUSION ENGINEERING AND DESIGN 2014. [DOI: 10.1016/j.fusengdes.2014.01.033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
35
|
Pieters R, Schulz V, Bol Schoenmakers M, van Duursen M, van den Berg M, Smit J. Activation of the AhR pathway prevents food allergy in mice. PHARMANUTRITION 2014. [DOI: 10.1016/j.phanu.2013.11.064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
36
|
Overbeek A, van den Berg M, Louwé L, Wendel E, ter Kuile M, Kaspers G, Stiggelbout A, van Dulmen-Den Broeder E, Hilders C. Practice, attitude and knowledge of Dutch paediatric oncologists regarding female fertility. Neth J Med 2014; 72:264-270. [PMID: 24930460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
BACKGROUND Chemotherapy and radiotherapy for childhood cancer can result in a decreased reproductive function. It is therefore important that paediatric oncologists discuss the possible impact of treatment on female fertility and available fertility preservation options with their patients. However, it is unknown what Dutch paediatric oncologists know about of the effect of cancer treatment on female fertility, whether or not they address this issue in clinical practice, what their attitudes are towards addressing fertility after cancer treatment and fertility preservation options, and to what extent they require additional information resources. METHODS In this nationwide quantitative cross-sectional study a survey was sent to all registered paediatric oncologists in the Netherlands (n=64). RESULTS Thirty-seven paediatric oncologists participated (participation rate 58%). Fertility issues were discussed with patients and/or parents by 97%. Of the paediatric oncologists, 54-76% were aware of possibilities for fertility preservation; however only <25% reported a moderate or high confidence in their knowledge of these techniques. Paediatric oncologists stated that they had little resources to counsel their patients and 92% found educational resources not completely sufficient. CONCLUSION Paediatric oncologists are well aware of the effect that cancer treatment may have on female fertility and their responsibility to counsel their patients and/or the parents on this issue. They do not (yet) possess the knowledge to sufficiently counsel these patients and, if needed, do not frequently refer them to a fertility specialist.
Collapse
|
37
|
Louwers YV, Roest-Schalken ME, Kleefstra N, Roeters van Lennep J, van den Berg M, Fauser BCJM, Bilo HJG, Sijbrands EJG, Laven JSE. Excess mortality in mothers of patients with polycystic ovary syndrome. Hum Reprod 2014; 29:1780-6. [DOI: 10.1093/humrep/deu107] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
|
38
|
Bakker N, Schieven L, Bruins R, van den Berg M, Hissink R. Compression Stockings after Endovenous Laser Ablation of the Great Saphenous Vein: A Prospective Randomized Controlled Trial. J Vasc Surg 2013. [DOI: 10.1016/j.jvs.2013.09.045] [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]
|
39
|
Bakker NA, Schieven LW, Bruins RMG, van den Berg M, Hissink RJ. Compression stockings after endovenous laser ablation of the great saphenous vein: a prospective randomized controlled trial. Eur J Vasc Endovasc Surg 2013; 46:588-92. [PMID: 24012465 DOI: 10.1016/j.ejvs.2013.08.001] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Accepted: 08/07/2013] [Indexed: 11/28/2022]
Abstract
OBJECTIVES To determine if the duration of wearing compression stockings after endovenous laser ablation (EVLA) of the great saphenous vein (GSV) has influence on pain and quality of life. METHODS This was a prospective randomized controlled trial. Between December 2006 and February 2008, 109 consecutive patients with EVLA of the GSV were analyzed. Deep vein insufficiency, ulceration, more than one insufficient vein in one leg, and use of anticoagulants were exclusion criteria. Group A used compression stocking for 48 hours after therapy, group B for 7 days. Pain (visual analogue scale [VAS]) and quality of life (SF-36) were analyzed 48 hours, 1 week, and 6 weeks after therapy. Three months after treatment, duplex ultrasound imaging was performed to assess occlusion rates. RESULTS Both groups (group A, n = 37; group B, n = 32) where comparable at baseline. After 1 week, there was a significant difference in pain (VAS score 3.7 [± 2.1] vs. 2.0 [± 1.1], p ≤ .001), and physical dysfunction (group A, 85.1 [± 11.2] vs. group B, 95.7 [± 10.1]; p < .001) as well as vitality (group A, 75 [± 13.0] vs. group B, 83.7 [± 13.4]; p = .03), all in favor of group B, which disappeared after 6 weeks. After 6 weeks, no significant differences in all endpoints were present. Duplex ultrasound imaging revealed complete GSV occlusion in all patients, while no cases of deep venous thrombosis had developed. CONCLUSIONS Prescribing compression stockings for longer than 2 days after endovenous GSV ablation (without simultaneous phlebectomies) leads to reduced pain and improved physical function during the first week after treatment.
Collapse
|
40
|
Schulz V, van Roest M, Bol-Schoenmakers M, van Duursen M, van den Berg M, Pieters R, Smit J. Aryl hydrocarbon receptor activation affects the dendritic cell phenotype and function during allergic sensitization. Immunobiology 2013; 218:1055-62. [DOI: 10.1016/j.imbio.2013.01.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Revised: 12/13/2012] [Accepted: 01/23/2013] [Indexed: 12/20/2022]
|
41
|
Solak KA, Wijnolts FMJ, Pralong FP, Blaauboer BJ, van den Berg M, Westerink RH, van Duursen MBM. In vitro neuroendocrine effects of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) in the AhR-expressing hypothalamic rat GnV-3 cell line. Toxicology 2013; 311:124-34. [PMID: 23871856 DOI: 10.1016/j.tox.2013.07.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Revised: 06/27/2013] [Accepted: 07/09/2013] [Indexed: 01/07/2023]
Abstract
The aryl hydrocarbon receptor (AhR) is involved in a wide variety of biological and toxicological responses, including neuroendocrine signaling. Due to the complexity of neuroendocrine pathways in e.g. the hypothalamus and pituitary, there are limited in vitro models available despite the strong demand for such systems to study and predict neuroendocrine effects of chemicals. In this study, the applicability of the AhR-expressing rat hypothalamic GnV-3 cell line was investigated as a novel model to screen for neuroendocrine effects of AhR ligands using 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) as reference compound. The qRT-PCR analyses demonstrated the presence of several sets of neurotransmitter receptors in the GnV-3 cells. TCDD (10nM) altered neurotransmitter signaling by up-regulation of glutamate (Grik2), gamma-amino butyric acid (Gabra2) and serotonin (Ht2C) receptor mRNA levels. However, no significant changes in basal and serotonin-evoked intracellular Ca(2+) concentration ([Ca(2+)]i) or serotonin release were observed. On the other hand, TCDD de-regulated period circadian protein homolog 1 (Per1) and gonadotropin releasing hormone (Gnrh) mRNA levels within a 24-h time period. Both Per1 and Gnrh genes displayed a similar mRNA expression pattern in GnV-3 cells. Moreover, the involvement of AhR in TCDD-induced alteration of Neuropeptide Y (Npy) gene expression was found and confirmed by using siRNA targeted against Ahr in GnV-3 cells. Overall, the combined results demonstrate that GnV-3 cells may be a suitable model to predict some mechanisms of action and effects of AhR ligands in the hypothalamus.
Collapse
|
42
|
Hong SH, Yu Y, Kim KP, Bak JG, Park HJ, Oh YS, Chung J, Nam YU, Bang EN, Kim KR, Litnovsky A, Hellwig M, Matveev D, Komm M, van den Berg M, Kim WC, Kim HK, Rho TH, Chu Y, Oh YK, Yang HL, Park KR, Chung KS. Plasma-Surface Interaction Activities in KSTAR. FUSION SCIENCE AND TECHNOLOGY 2013. [DOI: 10.13182/fst13-a16879] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
43
|
Schulz VJ, Smit JJ, Bol-Schoenmakers M, van Duursen MBM, van den Berg M, Pieters RHH. Activation of the aryl hydrocarbon receptor reduces the number of precursor and effector T cells, but preserves thymic CD4+CD25+Foxp3+ regulatory T cells. Toxicol Lett 2012; 215:100-9. [PMID: 23041608 DOI: 10.1016/j.toxlet.2012.09.024] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Revised: 09/24/2012] [Accepted: 09/26/2012] [Indexed: 12/12/2022]
Abstract
Aryl hydrocarbon receptor (AhR) activation suppresses immune responses, including allergic sensitization, by increasing the percentage of regulatory (Treg) cells. Furthermore, AhR activation is known to affect thymic precursor T cells. However, the effect of AhR activation on intrathymic CD4+CD25+Foxp3+ Treg cells is unknown. Therefore, we investigated the effect of AhR activation on the percentage and number of CD4+CD25+Foxp3+ Treg cells during allergic sensitization in relevant immunological organs. C3H/HeOuJ mice were treated on day 0 with 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and subsequently sensitized to peanut. On day 8, mice were sacrificed and thymus, spleen and mesenteric lymph nodes (MLN) were isolated. TCDD treatment decreased the number of CD4-CD8-, CD4+CD8+, CD4+CD8- and CD4-CD8+ precursor T cells, but not the number of thymic CD4+CD25+Foxp3+ Treg cells. TCDD treatment increased the number of splenic CD4+CD25+Foxp3+ Treg cells and decreased Th1, Th2 and cytotoxic T cells in the spleen. This appeared to be independent of allergic sensitization. In MLN, TCDD treatment suppressed the increase of the number of CD4+CD25+Foxp3+ Treg cells, Th1, Th2 and cytotoxic T cells induced by peanut sensitization. Together, TCDD treatment preserves thymic CD4+CD25+Foxp3+ Treg cells and decreases peripheral T helper and cytotoxic T cells. This effect of TCDD may contribute to the increased influence of CD4+CD25+Foxp3+ Treg cells on immune mediated responses and to the understanding of how AhR activation modulates immune mediated diseases, including food allergy.
Collapse
|
44
|
Mela F, Fritsche K, de Boer W, van den Berg M, van Veen JA, Maharaj NN, Leveau JHJ. Comparative genomics of bacteria from the genus Collimonas: linking (dis)similarities in gene content to phenotypic variation and conservation. ENVIRONMENTAL MICROBIOLOGY REPORTS 2012; 4:424-432. [PMID: 23760828 DOI: 10.1111/j.1758-2229.2012.00336.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Collimonas is a genus of soil bacteria comprising three recognized species: C. fungivorans, C. pratensis and C. arenae. Collimonads share the ability to degrade chitin (chitinolysis), feed on living fungal hyphae (mycophagy), and dissolve minerals (weathering), but vary in their inhibition of fungi (fungistasis). To better understand this phenotypic variability, we analysed the genomic content of four strains representing three Collimonas species (Ter14, Ter6, Ter91 and Ter10) by hybridization to a microarray based on reference strain C. fungivorans Ter331. The analysis revealed genes unique to strain Ter331 (e.g. those on the extrachromosomal element pTer331) and genes present in some but not all of the tested strains. Among the latter were several candidates that may contribute to fungistasis, including genes for the production and secretion of antifungals. We hypothesize that differential possession of these genes underlies the specialization of Collimonas strains towards different fungal hosts. We identified a set of 136 genes that were common in all tested Collimonas strains, but absent from the genomes of three other members of the family Oxalobacteraceae. Predicted products of these 'Collimonas core' genes include lytic, secreted enzymes such as chitinases, peptidases, nucleases and phosphatases with a putative role in mycophagy and weathering.
Collapse
|
45
|
Chakraborty P, Chakravarty BN, Kabir SN, Goswami SK, Yenicesu O, Gulerman C, Ozyer S, Cakar E, Sarikaya E, Mollamahmutoglu L, Daponte A, Deligeoroglou E, Pournaras S, Tsezou A, Garas A, Skentou H, Messinis IE, Chakravarty BN, Ganesh A, Chowdhuri K, Shyam T, Ghosh S, Chattopadhyay R, Banerjee P, Pasricha P, Chakravarty BN, Chaudhury K, Kuji N, Kitamura S, Mochimaru Y, Yamada M, Hamatani T, Kawakami M, Hirayama A, Sugimoto M, Soga T, Tomita M, Yoshimura Y, Tabibi A, Tarahhomi M, Roghayee M, Bayatsarmadi H, Zolghadri J, Younesi M, Bug S, Solfrank B, Pricelius J, Craig A, Botcherby M, Stecher M, Bingemann S, Becker B, Nevinny-Stickel-Hinzpeter C, Kuroda K, Venkatakrishnan R, Salker MS, Quenby S, Brosens JJ, Rahmati M, Petitbarat M, Dubanchet S, Chaouat G, Ledee N, van den Berg M, van Maarle MC, van Wely M, Goddijn M, Telli P, Erdem M, Bozkurt N, Oktem M, Yirmibes K. M, Karabacak O, Erdem A, Kim CH, Lee KH, Kim SH, Chae HD, Kang BM, Jung KS, Johnson S, Godbert S, Perry P, Parkinson P, Vink-Ranti CQJ, Van Os HC, Tucker KE, Kapiteijn K, Heijdra PMA, Jansen CAM, Matsumoto H, Sato Y, Suginami K, Horie A, Fujiwara H, Konishi I, Yamada S, Kataoka N, Ogata S, Mukai M, Inai K, Hashimoto H, Tokura Y, Mizusawa Y, Matsumoto Y, Okamoto E, Kokeguchi S, Shiotani M, Mariee N, Li TC, Laird SM, Refaat B, Simpson H, Ledger W, Confino E, Williams A, Grabar V, Feskov A, Feskova I, Blazhko E, Horie A, Fujiwara H, Sato Y, Suginami K, Matsumoto H, Maruyama M, Konishi I, Hattori A, Chi HB, Qiao J, Wang HN, Hong TP, Gao HW, Abdelnaby El Gelany SAA, Nady Abdelmegeed A, Markoff A, Rogenhofer N, Engels L, Bogdanova N, Tuettelmann F, Thaler C, Seckin B, Sarikaya E, Sargin Oruc A, Celen S, Cicek N, Zarei S, Torabi R, Zeraati H, Zarnani AH, Akhondi MM, Hadavi R, Savadi-Shiraz E, Jeddi-Tehrani M, Sugiura-Ogasawara M, Ozaki Y, Katano K, Suzumori N, Kitaori T, Mizutani E, Al-Gubory KH, Bolifraud P, Angele K, Grange S, Puillet-Anselme L, Garrel C. EARLY PREGNANCY. Hum Reprod 2012. [DOI: 10.1093/humrep/27.s2.76] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
46
|
van Duursen MBM, Nijmeijer SM, de Morree ES, de Jong PC, van den Berg M. Genistein induces breast cancer-associated aromatase and stimulates estrogen-dependent tumor cell growth in in vitro breast cancer model. Toxicology 2011; 289:67-73. [PMID: 21854827 DOI: 10.1016/j.tox.2011.07.005] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2011] [Revised: 07/06/2011] [Accepted: 07/09/2011] [Indexed: 11/30/2022]
Abstract
In breast cancer, the interaction between estrogen-producing breast adipose fibroblasts (BAFs) and estrogen-dependent epithelial tumor cells is pivotal. Local estrogen production is catalyzed by aromatase, which is differentially regulated in disease-free and tumorigenic breast tissue. The use of aromatase inhibitors to block local estrogen production has proven effective in treatment of estrogen-dependent breast cancer. However, a major problem during breast cancer treatment is the sudden onset of menopause and many women seek for alternative medicines, such as the soy isoflavone genistein. In this study, we show that genistein can induce estrogen-dependent MCF-7 tumor cell growth and increase breast cancer-associated aromatase expression and activity in vitro. We have previously developed an in vitro breast cancer model where the positive feedback loop between primary BAFs and estrogen-dependent MCF-7 tumor cells is operational, thereby representing a more natural in vitro model for breast cancer. In this model, genistein could negate the growth inhibitory action of the aromatase inhibitor fadrozole at physiologically relevant concentrations. These data suggest that soy-based supplements might affect the efficacy of breast cancer treatment with aromatase inhibitors. Considering the high number of breast cancer patients using soy supplements to treat menopausal symptoms, the increasing risk for adverse interactions with breast cancer treatment is of major concern and should be considered with care.
Collapse
|
47
|
Schulz VJ, Smit JJ, Willemsen KJ, Fiechter D, Hassing I, Bleumink R, Boon L, van den Berg M, van Duursen MBM, Pieters RHH. Activation of the aryl hydrocarbon receptor suppresses sensitization in a mouse peanut allergy model. Toxicol Sci 2011; 123:491-500. [PMID: 21804081 DOI: 10.1093/toxsci/kfr175] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Food allergy is an increasing health problem in Western countries. Previously, it has been shown that the intensity of food allergic reactions can be regulated by regulatory T (T(reg)) cells. In addition, it has been shown that activation of the aryl hydrocarbon receptor (AhR) regulates T-cell responses by induction of T(reg) cells. Therefore, we hypothesized that activation of the AhR pathway can suppress development of food allergic responses through the induction of T(reg) cells. This was investigated by using a mouse model for peanut allergy. C3H/HeOuJ mice (AhR(b)(-2)) were sensitized to peanut by administering peanut extract (PE) by gavage in the presence of cholera toxin and were treated with the prototypical AhR ligand 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) (0.6, 1.7, 5, and 15 μg/kg body weight) on days 3 and 11 orally. The functional role of CD4(+)CD25(+)Foxp3(+) T(reg) cells was investigated by depleting these cells with anti-CD25 mAb during sensitization to PE. TCDD treatment dose dependently suppressed sensitization to peanut (PE-specific IgE, IgG1, and IgG2a and PE-induced IL-5, IL-10, and IL-13, respectively). The percentage, but not the number, of CD4(+)CD25(+)Foxp3(+) T(reg) cells dose dependently increased by AhR activation in both spleen and mesenteric lymph nodes. Depletion of CD4(+)CD25(+)Foxp3(+) T(reg) cells markedly reversed the suppressive effect of TCDD on PE-specific antibody levels and PE-induced IL-5, IL-10, and IL-13 cytokine production. Present data demonstrate for the first time that activation of the AhR by TCDD suppressed the development of Th2-mediated food allergic responses. A functional shift within the CD4(+) cell population toward CD4(+)CD25(+)Foxp3(+) T(reg) cells appeared to underlie this effect. This suggests that the AhR pathway might provide potential therapeutic targets to treat food allergic diseases.
Collapse
|
48
|
Castellote J, van den Berg M, Valls Solé J. P22.8 The effect of preceding muscle activity on reaction time. Clin Neurophysiol 2011. [DOI: 10.1016/s1388-2457(11)60569-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
49
|
Lesschen J, van den Berg M, Westhoek H, Witzke H, Oenema O. Greenhouse gas emission profiles of European livestock sectors. Anim Feed Sci Technol 2011. [DOI: 10.1016/j.anifeedsci.2011.04.058] [Citation(s) in RCA: 217] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
50
|
van den Berg M, Verbaarschot P, Hontelez S, Vet LEM, Dicke M, Smid HM. CREB expression in the brains of two closely related parasitic wasp species that differ in long-term memory formation. INSECT MOLECULAR BIOLOGY 2010; 19:367-379. [PMID: 20236366 DOI: 10.1111/j.1365-2583.2010.00997.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The cAMP/PKA signalling pathway and transcription factor cAMP response element-binding protein (CREB) play key roles in long-term memory (LTM) formation. We used two closely related parasitic wasp species, Cotesia glomerata and Cotesia rubecula, which were previously shown to be different in LTM formation, and sequenced at least nine different CREB transcripts in both wasp species. The splicing patterns, functional domains and amino acid sequences were similar to those found in the CREB genes of other organisms. The predicted amino acid sequences of the CREB isoforms were identical in both wasp species. Using real-time quantitative PCR we found that two low abundant CREB transcripts are differentially expressed in the two wasps, whereas the expression levels of high abundant transcripts are similar.
Collapse
|