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Atherton H, Schroeder M, Dodd M, Ball D, Griffin J, Clarke K, Radda G, Tyler D. 003 Real-time assessment of Krebs cycle metabolism with hyperpolarised [2-13c]pyruvate. BRITISH HEART JOURNAL 2010. [DOI: 10.1136/hrt.2009.191049c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Smith E, Zhang Q, Shen J, Schroeder M, Silva C. Modification of Esperase® by covalent bonding to Eudragit® polymers L 100 and S 100 for wool fibre surface treatment. BIOCATAL BIOTRANSFOR 2009. [DOI: 10.1080/10242420802249521] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Schroeder M, Schweitzer M, Lenting H, Guebitz G. Chemical modification of proteases for wool cuticle scale removal. BIOCATAL BIOTRANSFOR 2009. [DOI: 10.1080/10242420400025794] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Schroeder M, Alvarez E, Steele M, Malhotra P, Mbipeh M. Cardiac Arrest Alert System. J Med Device 2009. [DOI: 10.1115/1.3147483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
According to the American Heart Association, approximately 166,200 out-of-hospital cardiac arrests occur each year. It is estimated that a victim's chances of survival are reduced by 7-10 percent for every minute that passes without treatment. Obviously, time is very critical in such situations. In most cardiac arrest cases, there is little to no warning to the victim that their heart has stopped and thus no time to notify others that emergency care is immediately required. To help alert the victim and others that a cardiac arrest episode has occurred, an ambulatory alarm and notification system has been built for individuals at high risk of cardiac arrest. The cardiac arrest alert system uses a ring-style photoplethysmograph that is connected to an armband unit which performs signal processing and wireless transmission and possesses an audible alarm. A wristband interface provides visual and tactile warnings, a reset button and a threshold adjuster. If the user's heart rate goes outside the preset range or is not detected by the system, a visual and tactile warning notifies the user of the situation. If the device is not reset or the problem not rectified within several seconds, the device then goes into full activation mode and sounds a loud alarm to notify nearby individuals who may be able to provide emergency assistance to the user. In full activation mode, the device also wirelessly transmits a signal to a central unit that, when signaled, automatically calls 911 and plays a pre-recorded message that states the incident and specifies the location. An additional phone number can also be stored so that another notification call is automatically performed. The central unit has a speaker so that the notification message is locally audible as well. In emergency situations, the cardiac arrest alert system will provide a life-saving service by rapidly alerting the user as well as nearby individuals and emergency respondents who can provide immediate assistance.
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Weller A, Schroeder M, Shbiro L, Gelber V. Early-life short-term voluntary exercise attenuates obesity in adult OLETF rats. Appetite 2009. [DOI: 10.1016/j.appet.2009.04.204] [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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Knoedler MK, Gauler T, Matzdorff A, Jordan O, Schroeder M, Gruenwald V, Dietz A, Arnold D, Hennemann B, Keilholz U. Multicenter phase II study of cetuximab plus docetaxel in 84 patients with recurrent or metastatic, platinum-pretreated SCCHN. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.6048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
6048 Background: Cetuximab and docetaxel are both active in squamous cell carcinoma of the head and neck (SCCHN). We investigated the efficacy of cetuximab plus docetaxel as second-line treatment in platinum-pre-treated patients with recurrent and or metastatic SCCHN. Methods: 84 patients were enrolled and received cetuximab (initial dose of 400 mg/m2, followed by subsequent weekly doses of 250 mg/m2) and docetaxel (35 mg/m2 on days 1, 8, 15 of a 4-week cycle) for a maximum of 6 cycles. Patients with stable disease continued to receive cetuximab until disease progression or unacceptable toxicity. The primary endpoint was the objective response rate according to RECIST criteria. Secondary endpoints were response rate in relation to platinum sensitivity, progression-free survival, overall survival, and toxicity. Results: According to RECIST there were 10 PR (12%) and 23 SD (27%), resulting in a disease control rate of 39%. Response to protocol treatment was unrelated to previous platinum sensitivity. Median progression-free survival was 4 months (95% CI, 2.9 to 5.1) and median overall survival was 7 months (95% CI, 5.5 to 8.5). The duration on protocol treatment exceeded 12 months in 6 (8%) patients. Grade III/IV toxicities included gastric perforation (n = 1), pneumonia (n = 7), mucositis and skin toxicities. Conclusions: Cetuximab plus docetaxel was an active second-line treatment regimen with acceptable toxicity in patients with platinum-pretreated SCCHN. The responsiveness was independent of previous platinum sensitivity. [Table: see text]
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Smart KE, Kilburn M, Schroeder M, Martin BGH, Hawes C, Marsh JM, Grovenor CRM. Copper and calcium uptake in colored hair. JOURNAL OF COSMETIC SCIENCE 2009; 60:337-345. [PMID: 19586601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
During hair coloring a number of disulfide bonds in cystine are oxidized (1) to create cysteic acid, forming binding sites for metal ions such as Ca(2+ )and Cu(2+ )from tap water (2). The increased uptake of these metals can have a detrimental impact on fiber properties-for example, reducing shine and causing a poor wet and dry feel (3). In addition, the increased uptake of copper can also contribute to further fiber damage during subsequent coloring due to its ability to take part in metal-induced radical chemistry (4). It is important to know where in the fibers these metals are located in order to either effectively remove these metals or control their chemistry. Nanoscale secondary ion mass spectrometry (NanoSIMS) has been used to locate the calcium and copper within hair that has been treated with a colorant and washed multiple times in tap water containing these ions. Untreated hair is used as a baseline standard material. Images with up to 50-nm spatial resolution of the preferential locations of calcium uptake were obtained, showing a high concentration of calcium in the cuticle region of colored hair, specifically in the sulfur-rich regions (A-layer and exocuticle).
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Schroeder M, Schadeck-Gressel C, Selbach J, Westerhausen M. Antibiotic Prophylaxis with Gyrase Inhibitors during Cytostatically Induced Granulocytopenias in Patients with Solid Tumors: A Double-Blind Prospective Randomized Study. Oncol Res Treat 2009. [DOI: 10.1159/000217408] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Choi J, Schroeder M, Ritchey J, DiPersio J. Epigenetic Modulation of Foxp3: Generation of CD4+CD25- T Cells with a Suppressor Phenotype. Biol Blood Marrow Transplant 2009. [DOI: 10.1016/j.bbmt.2008.12.008] [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]
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Schroeder M, Fatarella E, Kovač J, Guebitz GM, Kokol V. Laccase-Induced Grafting on Plasma-Pretreated Polypropylene. Biomacromolecules 2008; 9:2735-41. [DOI: 10.1021/bm800450b] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Weller A, Schroeder M, Shbiro L, Moran T. Maternal obesity levels at weaning are influenced by the pups’ strain: Insights from a cross-fostering study in oletf rats. Appetite 2008. [DOI: 10.1016/j.appet.2008.04.255] [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]
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Winnenburg R, Wachter T, Plake C, Doms A, Schroeder M. Facts from text: can text mining help to scale-up high-quality manual curation of gene products with ontologies? Brief Bioinform 2008; 9:466-78. [DOI: 10.1093/bib/bbn043] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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63
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Knoedler M, Gauler TC, Matzdorff A, Dietz A, Gruenwald V, Arnold D, Hennemann B, Schroeder M, Hofele C, Schmittel A, Keilholz U. Phase II trial to evaluate efficacy and toxicity of cetuximab plus docetaxel in platinum pretreated patients with recurrent and/or metastatic head and neck cancer. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.6066] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Zagoory-Sharon O, Schroeder M, Levine A, Moran TH, Weller A. Adaptation to lactation in OLETF rats lacking CCK-1 receptors: body weight, fat tissues, leptin and oxytocin. Int J Obes (Lond) 2008; 32:1211-21. [PMID: 18461073 DOI: 10.1038/ijo.2008.58] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
OBJECTIVE To understand the adaptation to lactation of obese rats, by studying the interplay among the gut hormone cholecystokinin (CCK), the adiposity hormone leptin and the affiliation hormone oxytocin in modulating body mass and fat storage. DESIGN Strain differences were examined between Otsuka Long Evans Tokushima Fatty (OLETF) rats lacking expression of functional CCK-1 receptors and Long Evans Tokushima Otsuka (LETO) controls, tested as nulliparous dams, at the 7 and 15th lactation day, at weaning (lactation day 22) or 8 weeks postweaning. MEASUREMENTS We measured body mass, fat pads (brown, retroperitoneal and inguinal) and inguinal adipocytes. Plasma levels of leptin and oxytocin were determined. RESULTS Fat depots of LETO female rats were larger during lactation compared to the levels found in postweaning and nulliparous female rats. LETO female rats gained weight and accumulated fat during pregnancy and lactation, returning to their normal fat levels postweaning. In contrast, OLETF female rats presented lower body weight and fat depots during the lactation period than nulliparous dams, and regained the weight and fat postweaning. Plasma leptin and oxytocin were highly correlated and followed the same pattern. OLETF leptin levels were highly correlated with fat depot and inguinal cell surface. No significant correlation was found for LETO parameters. CONCLUSIONS Pregnancy and lactation are energy-consuming events, which naturally induce female rats to increase food intake and accumulate fat. When challenged by the demands of rapidly growing preobese OLETF pups, OLETF dams' fat stores are reduced to lean, LETO levels. During lactation, sensitivity of the oxytocinergic neurons descending from the paraventricular nuclei to the nucleus of the solitary tract to CCK is reduced. We theorized that this pathway is not available to OLETF female rats that lack functional CCK-1 receptors to mediate the signal. The current study contributes to the understanding of the female body's adaptation to lactation.
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Schroeder M, Pöllinger-Zierler B, Aichernig N, Siegmund B, Guebitz GM. Enzymatic removal of off-flavors from apple juice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2008; 56:2485-2489. [PMID: 18318500 DOI: 10.1021/jf073303m] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Contaminating microorganisms such as Actinomycetes, Alicyclobacillus, and Chlostridium can generate off-flavors in apple juices. Such bacterial metabolites represent, besides phenol types such as guaiacol and 2,6-dibromophenol, a broad range of other chemicals, for example, geosmin, 2-methylisoborneol, or alpha-terpineol. A laccase from Trametes hirsuta was purified, immobilized, and applied for the selective elimination of off-flavor substances in apple juice caused by microbial contamination. The evaluation using GC-MS showed that enzymatic treatment could reduce the amount of guaiacol and 2,6-dibromophenol in apple juice significantly by 99 and 52%, respectively. Upon addition of mediators, the degradation could be increased and the spectrum of substrates extented. Furthermore, commercial apple juices spiked with off-flavors were treated in a continuous-flow reactor and tested by sensory evaluation.
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Feist JH, Bramow HJ, Brockmann R, Gliege G, Grünberg D, Kluck T, Pohle D, Schroeder M, Schult R, Vilbrandt R. Quality management for WENDELSTEIN 7-X—Lessons learned. FUSION ENGINEERING AND DESIGN 2007. [DOI: 10.1016/j.fusengdes.2007.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Schaefer C, Krause M, Fuhrhop I, Schroeder M, Algenstaedt P, Fiedler W, Rüther W, Hansen-Algenstaedt N. Time-course-dependent microvascular alterations in a model of myeloid leukemia in vivo. Leukemia 2007; 22:59-65. [PMID: 17898789 DOI: 10.1038/sj.leu.2404947] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Functional and morphological properties of tumor microcirculation play a pivotal role in tumor progression, metastasis and inefficiency of tumor therapies. Despite enormous insights into tumor angiogenesis in solid tumors, little is known about the time-course-dependent properties of tumor vascularization in hematologic malignancies. The aim of this study was to establish a model of myeloid leukemia, which allows long-term monitoring of tumor progression and associated microcirculation. Red fluorescent protein-transduced human leukemic cell lines (M-07e) were implanted into cranial windows of severe combined immunodeficient mice. Intravital microscopy was performed over 55 days to measure functional (microvascular permeability, tissue perfusion rate and leukocyte-endothelium interactions) and morphological vascular parameters (vessel density, distribution and diameter). Tumor progression was associated with elevated microvascular permeability and an initial angiogenic wave followed by decreased vessel density combined with reduced tissue perfusion due to loss in small vessels and development of heterogenous tumor vascularization. Following altered geometric resistance of microcirculation, leukocyte-endothelium interactions were more frequent without increased leukocyte extravasation. It was concluded that time-dependent alterations of leukemic tumor vascularization exhibit strong similarities to those found in solid tumors. The potential contribution to the development of barriers to drug delivery in leukemic tumors is discussed.
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Schroeder M, Pereira L, Couto SR, Erlacher A, Schoening KU, Cavaco-Paulo A, Guebitz G. Enzymatic synthesis of Tinuvin. Enzyme Microb Technol 2007. [DOI: 10.1016/j.enzmictec.2006.11.026] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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69
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Caro J, Caspary K, Hamel C, Hoting B, Kölsch P, Langanke B, Nassauer K, Noack M, Schiestel T, Schroeder M, Byun Y, Seidel-Morgenstern A, Tsotsas E, Wang H, Werth S. Perowskit-Hohlfasermembranen für die katalytische Partialoxidation von Methan zu Synthesegas. CHEM-ING-TECH 2007. [DOI: 10.1002/cite.200700046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Hirschman JE, Engel S, Hong E, Balakrishnan R, Christie K, Costanzo M, Dwight S, Fisk D, Nash R, Park J, Skrzypek M, Dolinski K, Livstone M, Oughtred R, Andrada R, Binkley G, Dong Q, Hitz B, Miyasoto S, Schroeder M, Weng S, Wong E, Botstein D, Cherry JM. The
Saccharomyces
Genome Database provides comprehensive information about the biology of
S. cerevisiae
and tools for studies in comparative genomics. FASEB J 2007. [DOI: 10.1096/fasebj.21.5.a264-c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Schroeder M, Zouboulis CC. All-trans-retinoic acid and 13-cis-retinoic acid: pharmacokinetics and biological activity in different cell culture models of human keratinocytes. Horm Metab Res 2007; 39:136-40. [PMID: 17326009 DOI: 10.1055/s-2007-961813] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Despite its known biological effect on epithelial cells, 13- CIS-retinoic acid shows low binding affinity to either cellular retinoic acid-binding proteins or nuclear retinoid receptors compared to its isomer all- TRANS-retinoic acid. We have postulated a prodrug-drug relation with 13- CIS-retinoic acid which isomerizes to all- TRANS-retinoic acid. On the other hand, the biological effects of these two compounds can differ in the widely used cell culture models of HaCaT and normal primary keratinocytes. In this study, we seeded HaCaT and normal keratinocytes at high densities leading to early confluence in order to imitate high keratinocyte proliferation, such as in acne and psoriasis, while to model decreased keratinocyte proliferation, as in aged and steroid-damaged skin, cells were seeded at a low density. High performance liquid chromatography was administered to examine retinoid uptake and metabolism in monolayer HaCaT and normal keratinocyte cultures and the 4-methylumbelliferyl heptanoate assay to estimate cell growth at different cell densities. Major qualitative and quantitative differences were detected in the two cell types regarding intracellular 13- CIS-retinoic acid isomerization to all- TRANS-retinoic acid. On the other hand, the two retinoic acid isomers showed similar effects on cell growth of both cell types tested with increasing proliferation at low cell densities, but being rather inactive at high ones in normal keratinocytes and exhibiting an antiproliferative effect in HaCaT keratinocytes. The missing effect of retinoids on cell proliferation in high seeding densities of normal keratinocytes may indicate that the normalizing activity of retinoids on hyperkeratotic diseases, such as acne or psoriasis, is likely to be carried out by modulation of cell differentiation than cell growth. On the other hand, induced keratinocyte proliferation in low seeding densities may provide an explanation for the acanthosis induced by topical retinoids in aged and steroid-damaged skin.
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Blumberg S, Schroeder M, Haba D, Malkesman O, Torregrossa AM, Weller A, Smith GP. Effects of CCK-8 on independent ingestion and central c-Fos-like immunoreactivity in rats on postnatal days 10 and 11. Peptides 2006; 27:2820-8. [PMID: 16860903 DOI: 10.1016/j.peptides.2006.05.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2006] [Revised: 05/31/2006] [Accepted: 05/31/2006] [Indexed: 12/12/2022]
Abstract
Controls of the independent ingestion of food in the preweanling rat emerge in the second postnatal week. We investigated the effects of CCK-8 (0, 1, 5, or 10 microg/kg IP) on intake and c-Fos-like immunoreactive (CFLI) cells in hindbrain and forebrain on postnatal days 10 and 11. Five micrograms per kilogram decreased intake and increased the number of CFLI cells in four subnuclei of the nucleus tractus solitarius (NTS), in arcuate nucleus (ARC), and in central nucleus of the amygdala (CeA). Ten micrograms per kilogram decreased intake and increased CFLI in three NTS subnuclei as much as 5 microg/kg did, but was more potent than 5 microg/kg in the medial NTS subnucleus. Ten micrograms per kilogram increased CFLI in paraventricular (PVN) and supraoptic (SON) nuclei, but 5 microg/kg did not. Thus, reduction of intake by CCK-8 on days 10 and 11 is associated with increased hindbrain and forebrain CFLI.
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Sarkaria J, Carlson B, Schroeder M, Grogan P, Yang L, James D. 592 POSTER RAD001 (everolimus) in vivo sensitivity is associated with wild-type PTEN function in a panel of serially transplanted GBM xenografts. EJC Suppl 2006. [DOI: 10.1016/s1359-6349(06)70597-3] [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] Open
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James D, Sarkaria J, Yang L, Carlson B, Schroeder M, Mladek A, Grogan P, Decker P. 593 POSTER Erlotinib sensitivity in GBM xenografts is associated with EGFR amplification and PTEN status. EJC Suppl 2006. [DOI: 10.1016/s1359-6349(06)70598-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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75
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Hurwitz I, Malkesman O, Stern Y, Schroeder M, Lavi-Avnon Y, Shayit M, Shavit Y, Wolf G, Yirmiya R, Weller A. Stress and pain responses in rats lacking CCK1 receptors. Peptides 2006; 27:1483-9. [PMID: 16289472 DOI: 10.1016/j.peptides.2005.10.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2005] [Revised: 10/10/2005] [Accepted: 10/10/2005] [Indexed: 11/24/2022]
Abstract
UNLABELLED CCK involvement in stress- and pain-responsiveness was examined by studying the behavior of infant (11-12-days-old) and adult OLETF rats that do not express CCK1 receptors. Infant odor- and texture-preferences were also assessed. We hypothesized that OLETF rats will show behavioral patterns similar to those previously observed after CCK1 antagonist administration. Rate of separation-induced ultrasonic vocalization was significantly greater in OLETF compared to controls, in two separate studies. Infant pups of the two strains did not differ in odor- and texture-preference tests. OLETF rats showed consistently longer hot-plate paw-lift (as infants, in two separate studies) and paw-lick (as adults) latencies. SUMMARY OLETF pups vocalized in isolation more than controls and showed relative hypoalgesic responses, evident also in adulthood, in concordance with the pharmacological literature.
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