Dissertations / Theses on the topic 'Akut leukemi'
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Dahlgren, Kerstin, and Rebeka Cutic. "Akut lymfatisk leukemi hos barn - Föräldrars upplevelser." Thesis, Högskolan i Halmstad, Akademin för hälsa och välfärd, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-44082.
Full textBackground: Acute lymphocytic leukemia (ALL) is the most common cancer in children and youth and may cause great physical and psychological burden on parents and children. Parents might worry and fear losing the child when their child has ALL. Aim: The aim of this study was to explore parent's experiences when their child suffered from acute lymphocytic leukemia (ALL). Method: A literature review with an inductive structure was performed where eleven articles were analyzed and chosen for results. Result: The result presents main category: Experience of being a parent off a child affected by ALL with subcategories: to feel life crashing, to feel insufficient, to worry about economics, to feel the need of changing parent strategies, to focus ahead. The second main category was The experience of the importance of the nurse with subcategories: to feel emotional support and to experience the need for information and education. Parents experienced that communication with the nurse was important and helped parents manage burden. Lack of communication made parents experience that the nurse withheld information and the trust disappeared. Conclusions: The study can provide knowledge about parent's experiences when their child has ALL and the need of help and support. More research is required to investigate in which way the nurse can ease parent's burden during the stressful time.
Malmström, Nina, and Evelina Aspegren. "Att behandlas mot akut myeloisk leukemi." Thesis, Linnéuniversitetet, Institutionen för hälso- och vårdvetenskap (HV), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-100779.
Full textBengtsson, Jenny, and Madelene Mohlin. "Akut lymfatisk leukemi hos barn : Föräldrars upplevelser." Thesis, Mittuniversitetet, Institutionen för hälsovetenskap, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-12222.
Full textPetersson, Fanny, and Nadine Evers. "Patienters upplevelse av att leva med akut myeloisk leukemi." Thesis, Högskolan i Halmstad, Akademin för hälsa och välfärd, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-35934.
Full textAcute myeloid leukemia (AML) is an invasive disease that requires a major transformation for the patient. The nurse therefore has an important role in contributing to professional nursing. The purpose of the study was to describe the patients experience of living with the disease AML. The study was a literature study where ten result articles were included, five qualitative and five quantitative. Content analysis was used as an analytical method, which resulted in three categories: experience of life limitations, the need for support and the experience of well-being. It appears that patients with AML feel limited in everyday life, usually the symptoms are the cause of the restrictions. Support, both professionally and socially, is of great importance to patients with AML. The quality of life of patients can be affected both positively and negatively during the disease. In order to improve nursing and treatment of the patients, more research is needed on the subject of nursing and how the patients experience the disease.
Djurvall, Håkan, and Magnus Karlsson. "Upplevelsen av att leva med akut leukemi : Ett patientperspektiv." Thesis, Högskolan i Borås, Institutionen för Vårdvetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-20304.
Full textProgram: Sjuksköterskeutbildning
Westerblad, Isak, and Paul Andréaheim. "Livskvalité hos barn med akut lymfatisk leukemi – en litteraturöversikt." Thesis, Uppsala universitet, Institutionen för folkhälso- och vårdvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-421293.
Full textDominique, Axel, and Martin Sohlman. "Personers upplevelser av att leva med akut leukemi : En litteraturstudie." Thesis, Luleå tekniska universitet, Institutionen för hälsa, lärande och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-83819.
Full textStrömberg, Olivia, and Lena Wåhlén. "Vuxnas upplevelser av att leva med akut leukemi : - En litteraturöversikt." Thesis, Mittuniversitetet, Avdelningen för omvårdnad, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-31819.
Full textGodkännande datum: 2017-03-21
Strömberg, Philip, and Lisa Olsson. "Patienters upplevelser av att leva med akut leukemi : En litteraturstudie." Thesis, Karlstads universitet, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-65317.
Full textAndersson, Sara, and Elin Envall. "Föräldrars upplevelser när deras barn insjuknat i akut lymfatisk leukemi : En litteraturöversikt." Thesis, Högskolan i Skövde, Institutionen för hälsovetenskaper, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-19622.
Full textBackground: Every year, 300 000 children develop cancer where Acute Lymphoblastic Leukemia (ALL) is the most common form of childhood cancer. The disease involves intensive treatment which will not only affect the child but also the parents. The quality of care affects parents’ experience of Health Care, this means that nurses have responsibility to care from a life-world-perspective. By paying attention to how illness, suffering and health are experienced and affect parents, the quality of care can be ensured. Aim: The aim of this study is to highlight parents’ experiences when their child has developed ALL. Method: The method is a literature review, ten scientific articles were selected and formed the basis of the study. Results: Based on the analysis, four categories emerged; When the disease becomes reality, Approaches to help their child, Factors affecting the management of treatment and The importance of relationships and communication with associated subcategories. Conclusion: Parents experience strong emotions related to their child’s diagnosis. The disease will lead to changes in what was previously considered a normal everyday life. Information and knowledge from healthcare providers is important as it can strengthen parents’ management of the disease. By highlighting the parents’ experience when their child has developed ALL, a broader understanding of how registered nurses encounter these meetings.
Karlsson, Josefine, and Emma Lundberg. "Patienters upplevelser av att leva med akut myeloisk leukemi : En litteraturöversikt." Thesis, Ersta Sköndal Bräcke högskola, Institutionen för vårdvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:esh:diva-8159.
Full textHultman, Lovisa, and Emma Källström. "När ett barn insjuknar i akut lymfatisk leukemi : ur ett föräldraperspektiv." Thesis, Linnéuniversitetet, Institutionen för hälso- och vårdvetenskap (HV), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-64830.
Full textWågberg, Johanna. "Sällsynt MLL-MLLT1 rearrangemang hos patient med atypisk akut leukemi – En fallbeskrivning." Thesis, Örebro universitet, Institutionen för medicinska vetenskaper, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-66365.
Full textFransson, Hanna, Armida Hovbrandt, and Isabella Nordqvist. "Livet efter diagnosen. : - En litteraturöversikt om patienters erfarenheter av att leva med akut myeloisk leukemi." Thesis, Jönköping University, HHJ, Avd. för omvårdnad, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-51598.
Full textStigmar, Jennie. "Behov av stöd till barn i skolan efter behandling av cancer." Thesis, Högskolan i Halmstad, Sektionen för hälsa och samhälle (HOS), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-23704.
Full textErixon, Michaela. "Hopp och Förtvivlan! Föräldrars upplevelser av att leva tillsammans med ett barn som har akut lymfatisk leukemi : en studie av självbiografier." Thesis, Högskolan i Skövde, Institutionen för vård och natur, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-4865.
Full textBackground: Parents are faced with a new and difficult reality when their children suffer from acute lymphoblastic leukemia. Their life becomes a chaos in which many emotions and experiences will shape their lives and their lives change drastically. They lose control of the various situations they are forced to go through which uncertainty and powerlessness is possibly the worst experience of all. The purpose of this study was to highlight parents' experiences of living with a child who has acute lymphoblastic leukemia.The chosen method is a qualitative approach "to analyze the stories' on which the study is based on the basis of autobiographies. The results showed that parents' perceptions of their plight was characterized by four main themes, such as, to fall into a chaos of emotions, to manage the child's suffering, the staff role and to return to normal. The conclusion brought a result which contributed to a better understanding, learning and insight for their parents' experiences. This allows the nurse is able to handle traumatic experiences in a more sympathetic manner. Then it means that the family can get the best and individual care inorder to meet the parents ' wishes and needs.
Cheok, Meyling. "Pharmacogenomics : gene expression to elucidate determinants of drug response in human acute lymphoblastic leukemia /." Aachen : Shaker, 2003. http://www.gbv.de/dms/bs/toc/372975429.pdf.
Full textGleissner, Beate, Richard Schlenk, Martin Bornhäuser, and Wolfgang E. Berdel. "Gemtuzumab Ozogamicin (Mylotarg) for the Treatment of Acute Myeloid Leukemia – Ongoing Trials." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-134989.
Full textDer Stellenwert von Gemtuzumab Ozogamicin (GO) in der Kombination mit Chemotherapie für die Behandlung der akuten myeloischen Leukämie (AML) wird derzeit auch in Europa untersucht. Der Einsatz von GO (6 mg/m2) in Kombination mit Cytarabin (100 mg/m2) bei der Primärbehandlung älterer Patienten mit AML wird in der SAL-Phase-II-Studie geprüft. Das in der MRC-AML15-Studie nachgewiesene verbesserte krankheitsfreie Überleben belegt den Stellenwert von GO (3 mg/m2) in Kombination mit Standard- und hoch dosiertem Cytarabin und einem Anthrazyklin für die Induktion und Konsolidierung bei neu diagnostizierter AML. Insbesondere Patienten mit einem günstigen und intermediären zytogenetischen Risikoprofil scheinen von der Gabe von GO zu profitieren. In der Behandlung von AML-Rezidiven oder refraktärer Erkrankung erwies sich GO (3 mg/m2) als sicher mit hoch dosiertem Cytarabin (3 g/m2) kombinierbar und war in der Wirksamkeit historischen Vergleichskollektiven der AMLSG-Studiengruppe überlegen. Erste Ergebnisse dokumentieren die Möglichkeit einer allogenen Stammzelltransplantation nach GO-Therapie. Erste Daten einer laufenden Studie belegen auch die Einsatzmöglichkeit und das Sicherheitsprofil von GO als Bestandteil einer Konditionierungstherapie von reduzierter Intensität mit Fludarabin und Ganzkörperbestrahlung
Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich
Liu, Hongyu. "The effects of PPAR ligands in human acute lymphocytic leukemia cell lines /." Berlin : Mensch-und-Buch-Verl, 2006. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=014968811&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
Full textHölig, Kristina, and Rainer Moog. "Leukocyte Depletion by Therapeutic Leukocytapheresis in Patients with Leukemia." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-136585.
Full textLeukozytose ist eine Komplikation verschiedener Leukämien und kann zur lebensbedrohlichen Leukostase führen. Als kritische Leukozytenzahlen gelten im Allgemeinen Werte über 100 × 109/l bei akuten myeloischen Leukämien und über 300 × 109/l bei akuter lymphatischer Leukämie und anderen Leukämieformen (z. B. chronisch-myeloische Leukämie). Mittels therapeutischer Leuko zytapherese können pathologisch erhöhte Leukozytenwerte bei Patienten mit symptomatischer oder drohender Leukostase reduziert werden, bis die Wirkung der Induktions-Chemotherapie einsetzt. Bei Patienten mit vorübergehenden Kontraindikationen gegen Zytostatika, wie z.B. in der Schwangerschaft, dient die Leukozytapherese zur Überbrückung des Zeitraums, bis die konventionelle Chemotherapie begonnen werden kann. Leukozytapheresen sollten nur in spezialisierten Zentren von erfahrenem, geschultem Personal durchgeführt werden. Eine sorgfältige Überwachung der Patienten ist von besonderer Bedeutung. Während einer Behandlung kann die Leukozytenzahl um 10–70% reduziert werden. Die Behandlung sollte täglich wiederholt werden, bis die Leukostasesymptomatik abgeklungen bzw. die Leukozytenzahl unter die kritische Interventionsschwelle abgefallen ist. Es mangelt an prospektiven, randomisierten, kontrollierten Studien, die den klinischen Effekt der therapeutischen Leukozytapherese bei Patienten mit Leukostase evaluieren. Retrospektive Studien lassen auf eine therapeutische Wirksamkeit der Leukozytapherese hinsichtlich Frühmorbidität und –mortalität bei Patienten mit neu diagnostizierter AML schließen. Ein Einfluss dieser Therapie auf das Gesamtüberleben von AML-Patienten konnte nicht nachgewiesen werden. Die entscheidende Therapie für diese Patienten ist die Induktions-Chemotherapie, die deshalb auch keinesfalls verzögert werden sollte
Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich
Sears, Daniel. "Identification of PI3K/Akt targets in chronic myeloid leukaemia." Thesis, Imperial College London, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.505451.
Full textSchloßer, Irmgard Juliane. "Auftreten von Clostridium difficile Infektionen bei AML-Patienten in der medizinischen Klinik und Poliklinik II von Januar 2000 bis Juni 2005." Doctoral thesis, kostenfrei, 2008. http://nbn-resolving.de/urn/resolver.pl?urn=nbn:de:bvb:20-opus-28570.
Full textWilder, Jayme. "The Role of AKT Signaling in T-Cell Acute Lymphoblastic Leukemia Relapse." Thesis, Harvard University, 2015. http://nrs.harvard.edu/urn-3:HUL.InstRepos:17295893.
Full textGleissner, Beate, Richard Schlenk, Martin Bornhäuser, and Wolfgang E. Berdel. "Gemtuzumab Ozogamicin (Mylotarg) for the Treatment of Acute Myeloid Leukemia – Ongoing Trials." Karger, 2007. https://tud.qucosa.de/id/qucosa%3A27610.
Full textDer Stellenwert von Gemtuzumab Ozogamicin (GO) in der Kombination mit Chemotherapie für die Behandlung der akuten myeloischen Leukämie (AML) wird derzeit auch in Europa untersucht. Der Einsatz von GO (6 mg/m2) in Kombination mit Cytarabin (100 mg/m2) bei der Primärbehandlung älterer Patienten mit AML wird in der SAL-Phase-II-Studie geprüft. Das in der MRC-AML15-Studie nachgewiesene verbesserte krankheitsfreie Überleben belegt den Stellenwert von GO (3 mg/m2) in Kombination mit Standard- und hoch dosiertem Cytarabin und einem Anthrazyklin für die Induktion und Konsolidierung bei neu diagnostizierter AML. Insbesondere Patienten mit einem günstigen und intermediären zytogenetischen Risikoprofil scheinen von der Gabe von GO zu profitieren. In der Behandlung von AML-Rezidiven oder refraktärer Erkrankung erwies sich GO (3 mg/m2) als sicher mit hoch dosiertem Cytarabin (3 g/m2) kombinierbar und war in der Wirksamkeit historischen Vergleichskollektiven der AMLSG-Studiengruppe überlegen. Erste Ergebnisse dokumentieren die Möglichkeit einer allogenen Stammzelltransplantation nach GO-Therapie. Erste Daten einer laufenden Studie belegen auch die Einsatzmöglichkeit und das Sicherheitsprofil von GO als Bestandteil einer Konditionierungstherapie von reduzierter Intensität mit Fludarabin und Ganzkörperbestrahlung.
Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
Du, Juan. "RAS, KIT, FLT3 and JAK2 gene mutations in Acute Myeloid Leukemia (AML) with inv(16) and t(8;21): Incidence and relevance on clinical outcome." [S.l. : s.n.], 2007. http://nbn-resolving.de/urn:nbn:de:bsz:289-vts-60221.
Full textAubin, Matthias [Verfasser], and Peter [Akademischer Betreuer] Oefner. "Glukokortikoide und akute lymphatische Leukämie: Ein proteomischer Ansatz / Matthias Aubin ; Betreuer: Peter Oefner." Regensburg : Universitätsbibliothek Regensburg, 2019. http://d-nb.info/1183375972/34.
Full textHölig, Kristina, and Rainer Moog. "Leukocyte Depletion by Therapeutic Leukocytapheresis in Patients with Leukemia." Karger, 2012. https://tud.qucosa.de/id/qucosa%3A27714.
Full textLeukozytose ist eine Komplikation verschiedener Leukämien und kann zur lebensbedrohlichen Leukostase führen. Als kritische Leukozytenzahlen gelten im Allgemeinen Werte über 100 × 109/l bei akuten myeloischen Leukämien und über 300 × 109/l bei akuter lymphatischer Leukämie und anderen Leukämieformen (z. B. chronisch-myeloische Leukämie). Mittels therapeutischer Leuko zytapherese können pathologisch erhöhte Leukozytenwerte bei Patienten mit symptomatischer oder drohender Leukostase reduziert werden, bis die Wirkung der Induktions-Chemotherapie einsetzt. Bei Patienten mit vorübergehenden Kontraindikationen gegen Zytostatika, wie z.B. in der Schwangerschaft, dient die Leukozytapherese zur Überbrückung des Zeitraums, bis die konventionelle Chemotherapie begonnen werden kann. Leukozytapheresen sollten nur in spezialisierten Zentren von erfahrenem, geschultem Personal durchgeführt werden. Eine sorgfältige Überwachung der Patienten ist von besonderer Bedeutung. Während einer Behandlung kann die Leukozytenzahl um 10–70% reduziert werden. Die Behandlung sollte täglich wiederholt werden, bis die Leukostasesymptomatik abgeklungen bzw. die Leukozytenzahl unter die kritische Interventionsschwelle abgefallen ist. Es mangelt an prospektiven, randomisierten, kontrollierten Studien, die den klinischen Effekt der therapeutischen Leukozytapherese bei Patienten mit Leukostase evaluieren. Retrospektive Studien lassen auf eine therapeutische Wirksamkeit der Leukozytapherese hinsichtlich Frühmorbidität und –mortalität bei Patienten mit neu diagnostizierter AML schließen. Ein Einfluss dieser Therapie auf das Gesamtüberleben von AML-Patienten konnte nicht nachgewiesen werden. Die entscheidende Therapie für diese Patienten ist die Induktions-Chemotherapie, die deshalb auch keinesfalls verzögert werden sollte.
Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
Jacobi, Till [Verfasser]. "Der Einfluss von all-trans-Retinsäure auf die Expression von CEACAMs bei humanen Akute-Promyelozytenleukämie - und Akute-myeloische-Leukämie - Zelllinien / Till Jacobi." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2008. http://d-nb.info/1022940287/34.
Full textKoch, Sina, Angela Jacobi, Martin Ryser, Gerhard Ehninger, and Christian Thiede. "Abnormal Localization and Accumulation of FLT3-ITD, a Mutant Receptor Tyrosine Kinase Involved in Leukemogenesis." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-136167.
Full textDieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich
Zich, Alexander Bernhard Harry [Verfasser]. "Analyse der Therapieergebnisse vor dem Hintergrund der Akut- und Spättoxizitäten bei Patienten mit akuter lymphatischer Leukämie nach Ganzkörperbestrahlung / Alexander Bernhard Harry Zich." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2015. http://d-nb.info/1075757258/34.
Full textBertacchini, Jessika <1980>. "adaptive capabilities of the pi3k/akt/mtor pathway in acute myeloid leukemia revealed by the use of selective inhibitors." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/5155/.
Full textDengler, Viola [Verfasser], and G. [Akademischer Betreuer] Behre. "Das molekulare Netzwerk zwischen der miRNA-223, C/EBPα und E2F1 in der Granulopoese und in der akut myeloischen Leukämie / Viola Dengler. Betreuer: G. Behre." Halle, Saale : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2010. http://d-nb.info/1024976181/34.
Full textHubmann, Max. "Das Monitoring Minimaler Resterkrankung bei Patienten mit akuter myeloischer Leukämie und Myelodysplastischem Syndrom nach allogener Blutstammzelltransplantation mit reduzierter Konditionierung." Doctoral thesis, Universitätsbibliothek Leipzig, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-93731.
Full textKoch, Sina, Angela Jacobi, Martin Ryser, Gerhard Ehninger, and Christian Thiede. "Abnormal Localization and Accumulation of FLT3-ITD, a Mutant Receptor Tyrosine Kinase Involved in Leukemogenesis." Karger, 2008. https://tud.qucosa.de/id/qucosa%3A27700.
Full textDieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
Kawata, Takahito. "Dual inhibition of the mTORC1 and mTORC2 signaling pathways is a promising therapeutic target for Adult T-cell Leukemia." Kyoto University, 2018. http://hdl.handle.net/2433/232109.
Full textSilveira, André Bortolini 1987. "Inibição da via PI3K na leucemia linfoide aguda T pediátrica = resposta à quimioterapia e implicações clínicas = PI3K inhibition in childhood T-cell acute lymphoblastic leukemia: response to chemotherapy and clinical implications." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/317454.
Full textTese (doutorado) - Universidade Estadual de Campinas, Instituto de Biologia
Made available in DSpace on 2018-08-24T06:00:33Z (GMT). No. of bitstreams: 1 Silveira_AndreBortolini_D.pdf: 16883235 bytes, checksum: e0759c48520d471791a5272349e1a837 (MD5) Previous issue date: 2013
Resumo: A via PI3K está frequentemente hiperativada em células primárias de leucemia linfoide aguda T (LLA-T) pediátrica, característica previamente associada à resistência a glucocorticoides. Pacientes cujas células leucêmicas apresentam mutações em PTEN, o principal regulador negativo de PI3K, podem apresentar maior risco de falha na terapia de indução e recaída. Neste estudo, uma assinatura baseada em expressão gênica foi utilizada para acessar o nível de ativação da via PI3K em amostras diagnósticas de LLA-T. Nós identificamos Myc como um importante integrador da atividade de sinalização por PI3K e observamos que maior atividade da via está associada à resistência a glucocorticoides e pior prognóstico. O inibidor de PI3K AS605240 mostrou atividade antileucêmica e forte sinergismo com glucocorticoides tanto in vitro como em um modelo xenográfico de LLA-T em camundongos NOD/SCID. Em contraste, a inibição de PI3K resultou em antagonismo com metotrexato e daunorrubicina, drogas que atuam preferencialmente em células em divisão. Esta interação antagonística, no entanto, pôde ser revertida pelo uso de um esquema temporal específico de administração das drogas. Nossos dados indicam os potenciais benefícios e limitações para a incorporação de inibidores de PI3K na terapia da LLA-T
Abstract: The PI3K pathway is frequently hyperactivated in primary T-cell acute lymphoblastic leukemia (T-ALL) cells. Activation of the PI3K pathway has been suggested as one mechanism of glucocorticoid resistance in T-ALL, and patients harboring mutations in the PI3K negative regulator PTEN may be at increased risk of induction failure and relapse. In this study, a PI3K gene expression signature was used as readout of PI3K activity in diagnostic T-ALL samples. We identified Myc as an important downstream integrator of PI3K pathway activity in T-ALL and found that higher PI3K activity is associated with glucocorticoid resistance and worse clinical outcome. The PI3K inhibitor AS605240 showed anti-leukemic activity and strong synergism with glucocorticoids both in vitro and in a NOD/SCID xenograft model of T-ALL. In contrast, PI3K inhibition showed antagonism with methotrexate and daunorubicin, drugs that preferentially target dividing cells. This antagonistic interaction, however, could be circumvented by the use of correct drug scheduling schemes. Our data indicate the potential benefits and difficulties for the incorporation of PI3K inhibitors in T-ALL therapy. OBSERVAÇÃOArquivo pdf com capa, página de rosto, folha de assinatura da banca examinadora, resumo e abstract foi editado segundo informação CCPG/002/2013
Doutorado
Genetica Animal e Evolução
Doutor em Genetica e Biologia Molecular
Rossner, Anna-Maria Jakobine Elisabeth [Verfasser]. "On-Slide Selektion zur Generierung spezifischer Antikörper gegen akute myeloische Leukämie mit Hilfe der Phage-Display-Technologie / Anna-Maria Jakobine Elisabeth Rossner." Gießen : Universitätsbibliothek, 2018. http://d-nb.info/1172202109/34.
Full textRossner, Anna-Maria [Verfasser]. "On-Slide Selektion zur Generierung spezifischer Antikörper gegen akute myeloische Leukämie mit Hilfe der Phage-Display-Technologie / Anna-Maria Jakobine Elisabeth Rossner." Gießen : Universitätsbibliothek, 2018. http://d-nb.info/1172202109/34.
Full textHeuser, Carla [Verfasser], and Ulrich [Gutachter] Germing. "Validierung der WHO-Klassifikation 2008 für akute myeloische Leukämie anhand 476 in Düsseldorf diagnostizierter und/oder therapierter Patienten / Carla Heuser ; Gutachter: Ulrich Germing." Düsseldorf : Universitäts- und Landesbibliothek der Heinrich-Heine-Universität Düsseldorf, 2020. http://d-nb.info/1209354187/34.
Full textTenzer, Aline [Verfasser]. "Zweitneoplasien, insbesondere hämatologische Neoplasien wie Myelodysplastisches Syndrom und Akute myeloische Leukämie, im Rahmen von Bendamustin-haltigen Therapien innerhalb der StiL-Studien / Aline Tenzer." Gießen : Universitätsbibliothek, 2013. http://d-nb.info/1065394950/34.
Full textStreck, Elena [Verfasser], Andreas [Akademischer Betreuer] Mackensen, and Andreas [Gutachter] Mackensen. "Charakterisierung und in vitro Zytotoxizität humaner allogener CD3+CD4-CD8-T Zellen gegen akute myeloische Leukämie / Elena Streck ; Gutachter: Andreas Mackensen ; Betreuer: Andreas Mackensen." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2020. http://d-nb.info/1204257779/34.
Full textBuchmann, Swantje [Verfasser]. "Prognostische Bedeutung der Expression der P2RY8-CRLF2-Fusions-assoziierten Gene LRRC32, BMP6 und VPREB1 für die Akute Lymphoblastische Leukämie im Kindes- und Jugendalter / Swantje Buchmann." Kiel : Universitätsbibliothek Kiel, 2017. http://d-nb.info/1128149176/34.
Full textTeutsch, Christian. "Untersuchungen zur Expression und Regulation der Tumorsuppressorgene H-rev107-1 und H-rev107-2 bei malignen hämatopoetischen Zellen." Doctoral thesis, Humboldt-Universität zu Berlin, Medizinische Fakultät - Universitätsklinikum Charité, 2004. http://dx.doi.org/10.18452/15119.
Full textThe H-rev107 gene has been isolated by cDNA subtraction from a cell culture model of H-ras transformed fibroblasts. It was characterized as a class II tumor suppressor gene confering resistance to H-ras induced transformation. Further investigation has demonstrated the presence of a human gene family with H-rev107-1 localized on chromosome 11q11-12 and H-rev107-2/TIG3/RARRES3 on 11q23. Inducibility of the genes in epithelial cells by interferon-gamma (H-rev107-1) and retinoids (H-rev107-2) has suggested that expression of the H-rev107 genes might be relevant in hematopoesis. In the present study RT-PCR analysis revealed an expression of H-rev107-2 in 8/15 samples of leukaemic blasts derived from patients suffering from acute leukaemias (10 AML, 5 ALL). H-rev107-2 was induced upon incubation with IFN-gamma ?in 14/14 samples and with ATRA in 5/15 samples. In cell lines derived from myeloid and lymphoid tumors an expression of H-rev107-2 was found in CEM (strong), Raji and HL-60 (both weak), whereas in NB-4, U937, K562 and Jurkat no H-rev107-2 transcripts were detected by RT-PCR and Northern Blot analysis. In all cell lines H-rev107-2 could be strongly induced by IFN-gamma. Inducibility of H-rev107-2 upon treatment with IFN-alpha or ATRA was dependent on the type of cell line. In contrast to the weak effect seen in the myeloblastic cell line HL-60 a strong induction of H-rev107-2 by ATRA occurred in the acute promyelocytic leukaemia cell line NB-4. Transcripts of H-rev107-2 in NB-4 were detected at the earliest after 4 h incubation with ATRA or IFN-gamma. Inhibition of the MAPK-pathway by the MEK-inhibitor PD089059 or the signal transducer JAK2 by AG490 had neither influence on the H-rev107-2 expression nor on the IFN-gamma- and ATRA-dependent H-rev107-2 induction. H-rev107-1 expression was detectable in U937, CEM and K562, whereas RT-PCR analysis of the other cell lines and of 8 samples of primary leukaemic blasts (6 AML, 2 ALL) revealed no H-rev107-1 expression. An induction of H-rev107-1 occurred exclusively in NB-4 by ATRA and IFN-gamma and in K562 by IFN-gamma and IFN-alpha? to a weak extend. In conclusion, this work revealed a likely involvement of the class II tumor suppressor gene H-rev107-2/TIG3/RARRES3 in the regulation of hematopoesis being a potential IFN and ATRA target.
Möricke, Anja. "Identifizierung und Charakterisierung einer alternativ gespleißten mRNA der Interleukin-4 Rezeptor alpha-Kette und Untersuchung der biologischen Funktion der verkürzten Rezeptorvariante." Doctoral thesis, Humboldt-Universität zu Berlin, Medizinische Fakultät - Universitätsklinikum Charité, 2002. http://dx.doi.org/10.18452/14717.
Full textAlternative pre-mRNA splicing is a widespread mechanism contributing to the diversity of gene expression. The number of newly detected alternatively spliced transcripts has continuously risen, and distinct biological functions have been attributed to some protein isoforms resulting from these mRNA variants. We report on the detection of a novel alternatively spliced transcript of the human interleukin-4 receptor alpha (IL-4R-alpha) chain, which has been called IL-4R-alpha-IT mRNA. A premature stop codon due to omission of one exon in the membrane-proximal region of the cytoplasmic domain leads to an mRNA variant, which encodes an intracellular truncated receptor protein lacking domains which are essential for signal transduction. The investigation of the biological function of the IL-4Ra splice variants in a suitable mouse cell system showed, that the truncated receptor variant is not able to mediate cell proliferation or prevention of apoptosis. Bone marrow and peripheral blood samples from children with acute lymphoblastic leukemia were analyzed for the expression of IL-4R-alpha-IT mRNA relative to the full-length receptor transcript by competitive RT-PCR. Initially, there was found a difference of IL-4R-alpha-IT mRNA expression in patients with initial ALL versus relapsed ALL. However, this difference turned out to be due to the time interval between collection and preparation of samples. While freshly isolated material was associated with low levels of IL-4R-alpha-IT mRNA, samples with a longer period until cell preparation exhibited a drastic increase of IL-4R-alpha-IT mRNA levels. The same results were obtained for peripheral blood samples from healthy donors by imitating a prolonged time of transport until cell preparation. Interestingly, a similar effect could be demonstrated for splice variants of other cytokine receptors and cytokines (beta-C, IL-7R, and IL-7), although to different extents. mRNA stability assays and semiquantitative RT-PCR specific for IL-4Ra or IL-4R-alpha-IT, respectively, indicated that the expression of IL-4R-alpha-IT mRNA increases absolutely in these samples, although mRNA degradation may be of importance as well.
Choudhary, Gaurav Sudhakar. "Role of Myeloid Cell Leukemia 1 (MCL-1) in mediating chemoresistance towards BCL-2 homology 3 (BH3) mimetics in lymphoid malignancies." Case Western Reserve University School of Graduate Studies / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=case1448024862.
Full textOpatz, Sabrina [Verfasser], and Stefan [Akademischer Betreuer] Bohlander. "Akute myeloische Leukämie mit rekurrenten chromosomalen Translokationen, Analyse der Fusionsproteine und kooperierender molekularer Mutationen auf dem Weg zu einer zielgerichteten, personalisierten Therapie / Sabrina Opatz ; Betreuer: Stefan Bohlander." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2018. http://d-nb.info/1164377051/34.
Full textGauthier, Nina Ilse [Verfasser], Robert [Akademischer Betreuer] Oostendorp, Robert [Gutachter] Oostendorp, and Florian [Gutachter] Bassermann. "Neue therapeutische Strategien für die FLT3-ITD+ akute myeloische Leukämie in Zusammenhang mit der nischenabhängigen Regulation / Nina Ilse Gauthier ; Gutachter: Robert Oostendorp, Florian Bassermann ; Betreuer: Robert Oostendorp." München : Universitätsbibliothek der TU München, 2021. http://d-nb.info/1236692322/34.
Full textLonetti, Annalisa <1982>. "Study of PI3K/Akt signaling pathway as potential molecular target for T-cell acute lymphoblastic leukemia (T-ALL) treatment: pan-inhibition of PI3K catalitic isoforms as better therapeutic approach." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amsdottorato.unibo.it/6763/.
Full textJotta, Patricia Yoshioka 1985. "Mutações de PTEN nas leucemias linfóides agudas T." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/316892.
Full textTese (doutorado) - Universidade Estadual de Campinas, Instituto de Biologia
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Resumo: A leucemia linfóide aguda (LLA) é o câncer mais frequente na infância, e destas, 15% são do tipo T (LLA-T). A hiperativação da via PI3K/Akt tem sido amplamente descrita em tumores e em linhagens celulares de LLA-T. PTEN é o principal regulador negativo dessa via e frequentemente encontra-se inativado em cânceres humanos. Com frequência, pacientes com LLA-T apresentam mutações ativadoras de NOTCH1. NOTCH1 pode regular transcricionalmente PTEN, contudo ainda não está claro como as mutações ativadoras de NOTCH1 influenciariam a expressão de PTEN nas LLA-T. Nós encontramos uma ocorrência de 11 (17,7%) mutações no éxon 7 do PTEN em 62 casos de LLA-T estudados consecutivamente. Contudo, nenhuma mutação foi encontrada na análise de 71 casos de LLA-B derivada. A maioria das mutações de PTEN apresentavam inserções/deleções de mais de 3 nucleotídeos. Não encontramos associação entre mutações em PTEN e o gênero, a idade e a contagem de glóbulos brancos ao diagnóstico. Pacientes com alterações no PTEN apresentaram uma tendência a pior sobrevida global (OS, p=0.07). Dentre os pacientes de LLA-T classificados como alto risco (n=56), aqueles possuindo anormalidades no PTEN mostraram-se associados significativamente a menor OS (p=0.019) e sobrevida livre de leucemia (LFS 47% vs 76%; p=0.045). As curvas de LFS foram significativamente diferentes (p=0.003), mesmo considerando apenas pacientes que atingiram a remissão no dia 28 do tratamento para a análise. Nosso estudo também mostrou que pacientes com mutações em NOTCH1 apresentavam aumento na transcrição de MYC e menor expressão de PTEN mRNA comparados a pacientes com NOTCH1 selvagem. Nós recentemente demonstramos que células de LLA-T apresentavam fosforilação de PTEN mediada por CK2, resultando na estabilização e consequentemente inativação da proteína PTEN. Corroborando ao estudo anterior, os casos de LLA-T analisados, independente do status de mutação em NOTCH1, expressam níveis significativamente mais altos de proteína PTEN do que controles normais. Para avaliar o impacto da regulação transcricional de NOTCH e a inativação postranscricional por CK2 de PTEN, nós tratamos as células de LLA-T com inibidores de gamma-secretase (DAPT e de CK2 (DRB/TBB). Nosso estudo enfatiza a relevância biológica e clínica da regulação do PTEN em LLA-T. E sugerimos o uso combinado de inibidores de gamma-secretase e CK2 devem possuir potencial terapêutico nas LLA-T
Abstract: T-cell acute lymphoblastic leukemia (T-ALL) accounts for approximately 15% of pediatric ALL. Patients with T-ALL are at increased risk of relapse compared with children treated for B-cell precursor ALL. Mutations in the phosphatase and tensin homolog (PTEN) gene leading to PTEN protein deletion and subsequent activation of the PI3K/Akt signaling pathway are common in cancer. PTEN is the main negative regulator of the PI3K/Akt survival pathway. T-ALL patients frequently display NOTCH1 activating mutations and Notch can transcriptionally down-regulate the tumor suppressor PTEN. However, it is not clear whether NOTCH1 mutations associate with decreased PTEN expression in primary T-ALL. We report that PTEN exon 7 mutations occurred in 11 (17.7%) out of 62 consecutive pediatric T-cell acute lymphoblastic leukemia (T-ALL) but in none of 71 precursor B-ALL patients. Most PTEN mutations were insertions/deletions of more than 3 nucleotides. No associations were found between PTEN mutation and age, gender, WBC at diagnosis, early response to therapy and remission rate. Patients with PTEN mutation (n=11) had a tendency toward worse overall survival (OS, p=0.07). Remarkably, PTEN mutations were significantly associated with lower OS (p=0.019) and leukemia-free survival (LFS 47% vs 76%, p=0.045) within patients classified in the high risk group (n=56). LFS curves were significantly different (p=0.003) even if only patients who reached remission on day 28 were considered for analysis. We compared patients with or without NOTCH1mutations and report that the former presented higher MYC transcript levels and decreased PTEN mRNA expression. We recently showed that T-ALL cells frequently display CK2-mediated PTEN phosphorylation, resulting in PTEN protein stabilization and concomitant functional inactivation. Accordingly, the T-ALL samples analyzed, irrespectively of their NOTCH1 mutational status, expressed significantly higher PTEN protein levels than normal controls. To evaluate the integrated functional impact of NOTCH transcriptional and CK2 post-translational inactivation of PTEN, we treated TALL cells with both the gamma-secretase inhibitor DAPT and the CK2 inhibitors DRB/TBB. Our data suggest that combined use of gamma-secretase and CK2 inhibitors may have therapeutic potential in T-ALL. And emphasize the biological and clinical relevance of PTEN regulation in pediatric T-ALL
Doutorado
Genetica Animal e Evolução
Doutor em Genetica e Biologia Molecular
Schmachtenberg, Anna-Juliane. "Differentielle Expression des Tyrosin-Kinoms bei akuter lymphatischer Leukämie des erwachsenen Alters." Doctoral thesis, Humboldt-Universität zu Berlin, 2018. http://dx.doi.org/10.18452/19369.
Full textTyrosine kinases (TK) are key regulators of cellular signal transduction and affect cell cycle, cell survival, apoptosis, proliferation and differentiation. Dysregulation of TK activity contributes to the development of leukemia and other malignancies. So are 25 % of adult acute lymphoblastic leukemias (ALL) driven by the BCR-ABL1 translocation. Despite intensive therapy, the 5-year overall survival of adult patients with ALL is about 50 %. In contrast to conventional chemotherapeutic agents, the use of specific-acting TK-inhibitors offers an individualized therapeutic approach with less side-effects and a better outcome. To identify possible new therapeutic targets, a systematic survey of expression changes of the entire tyrosine kinome was carried out. A variety of different tyrosine kinases showed great changes in the expression profile of ALL-cells. Part of these expression changes can be attributed to a changed methylation profile in adult ALL. EPHA7 and PTK2 are potential markers for B-line ALL and the NTRK3, ERBB4 and ZAP70 for T-lines ALL. The interindividual varying expression of the tyrosine kinases EPHA3, EPHB3, KIT, ZAP70 and PDGFRB presumably allows a more precise risk classification. In particular, the tyrosine kinases ABL1, DDR1, EPHA7, FGFR1, ERBB4, FLT1, FLT3, FLT4, LCK, LTK, PTK2, PTK2B, PTK7, SRC, TEC and TYK2 are promising therapeutic targets, which promotes proliferation and/or inhibits apoptosis in the hematopoietic system. A proliferation promoting effect of overexpressed FLT4 could be shown for the first time. The variety of changes in the tyrosine kinase expression seems to play an important role in the development of ALL and TK could be promising new therapeutic targets.