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1.
Int. j. clin. health psychol. (Internet) ; 23(2): 1-8, abr.-jun. 2023. ilus
Artículo en Inglés | IBECS | ID: ibc-213887

RESUMEN

Research has identified a wide range of psychosocial factors associated to choosing to engage in ongoing cancer screenings. Nevertheless, a systematic review of the theoretical frameworks and constructs underpinning studies on breast, cervical, and colorectal cancer screening participation has yet to be conducted. As part of the action-research project “Miriade,” the present study aims to identifying the main theoretical frameworks and constructs adopted in the literature over the past five years to explain cancer screening participation. According to the PRISMA guidelines, a search of the MEDLINE/PubMed and PsycINFO databases was made. Empirical studies conducted from 2017 to 2021 were included. The following keywords were used: breast OR cervical OR colorectal screening AND adhesion OR participation OR engagement AND theoretical framework OR conceptual framework OR theory. Overall, 24 articles met the inclusion criteria. Each theoretical framework highlighted clinical and psychosocial constructs of cancer screening participation, focusing on the individuals (psycho-emotional functioning and skills plan) and/or the health services perspectives. Findings from the present study acknowledge the plurality of the theoretical frameworks and constructs adopted to predict or promote breast, cervical, and colorectal cancer screening adhesion and the need for new research efforts to improve the effectiveness of cancer screening promotion interventions. (AU)


Asunto(s)
Humanos , Neoplasias de la Mama , Cuello del Útero , Neoplasias Colorrectales , Detección Precoz del Cáncer , Toma de Decisiones
2.
Rev. senol. patol. mamar. (Ed. impr.) ; 36(1): 1-8, ene.-mar. 2023. tab
Artículo en Español | IBECS | ID: ibc-EMG-475

RESUMEN

Introducción: el tratamiento conservador de la mama junto con la radioterapia es de elección en las pacientes con cáncer de mama precoz. Gracias a un mayor conocimiento de la radiobiología tumoral, la tendencia actual consiste en utilizar técnicas de irradiación parcial acelerada, entre las que destaca la radioterapia intraoperatoria (RIO). Métodos: estudio prospectivo multicéntrico dividido en 2 grupos comparativos con casos consecutivos de las pacientes a que han recibido una cirugía conservadora por cáncer de mama asociada o no a RIO. Se valora la relación de esta terapia con los valores de las proteínas involucradas en la respuesta biológica (IL6, IL8, CXCL10, IL1β y TNF- α) en muestras de suero preoperatorio y a las 24 h desde la cirugía, y de drenaje quirúrgico a las 6 y 24 h desde la cirugía. Resultados: se ha objetivado en las pacientes tratadas con RIO una disminución significativa de IL6 e IL8, así como un aumento de CXCL10 favorable para la lucha contra la progresión del tumor (p valor < 0,05). Las alteraciones del sistema inmunológico se manifiestan tanto en suero como en débito del drenaje quirúrgico a las 6 y 24 h desde la cirugía. Conclusiones: la RIO modifica la respuesta biológica en las pacientes con cáncer de mama. A pesar de que se deben desarrollar más líneas de investigación, la comprensión de los mecanismos de desarrollo del tumor, abre una nueva etapa en el desarrollo de tratamientos perioperatorios dirigidos a dianas concretas que compensen las consecuencias dañinas de la cirugía. (AU)


Introduction: Breast conserving surgery with radiotherapy is the treatment of choice in patients with early breast cancer. Due to a better understanding of tumour radiobiology, the current trend is to use accelerated partial irradiation techniques, among which intraoperative radiotherapy (RIO) stands out. Methods: Prospective multicentre study divided into two comparative groups with consecutive cases of patients who have undergone conservative surgery for breast cancer associated or not with RIO. The relation of this therapy with the values of proteins involved in the biological response (IL6, IL8, CXCL10, IL1β y TNF- α) is assessed in serum samples preoperative and 24 hours after surgery, and surgical drainage samples at 6 and 24 hours after surgery. Results: A significant decrease in IL6 and IL8, as well as an increase in CXCL10 favourable for the fight against tumour progression (p-value < 0.05) was observed in patients treated with RIO. Immune system alterations are manifested in both serum and surgical drainage debit at 6 and 24 hours after surgery. Conclusions: RIO modifies the biological response in breast cancer patients. Although more lines of research need to be developed, the understanding of the mechanisms of tumour development opens a new stage in the development of perioperative treatments directed at specific targets that compensate for the harmful consequences of surgery. (AU)


Asunto(s)
Humanos , Neoplasias de la Mama/radioterapia , Neoplasias de la Mama/cirugía , Estudios Prospectivos , Radiobiología , Proteómica , Interleucinas
3.
Rev. senol. patol. mamar. (Ed. impr.) ; 36(1): 1-6, ene.-mar. 2023. ilus, tab
Artículo en Español | IBECS | ID: ibc-EMG-476

RESUMEN

Introducción: el empleo de dispositivos de tomografía por emisión de positrones mamodedicados (dbPET) mejora la resolución espacial respecto a la PET corporal total. La mamografía mediante imagen molecular PET (MAMMI-PET) es una nueva técnica, pero los estudios clínicos realizados son escasos. El objetivo del trabajo es determinar la sensibilidad, especificidad, los valores predictivos positivos y negativos de la MAMMI-PET, así como comparar el dispositivo con las pruebas de imagen tradicionales. Material y métodos: estudio observacional prospectivo y analítico sobre una muestra de pacientes con cáncer de mama confirmado histológicamente, atendidas en el Hospital General de Valencia (enero 2017-noviembre 2018). Se realizó un estudio preoperatorio con ecografía, mamografía, resonancia magnética nuclear y MAMMI-PET. Se consideró a la anatomía patológica como el patrón oro del número y tipo de lesiones existentes en cada mama. Se comprobó si el diagnóstico del MAMMI-PET para cada lesión coincidió con el resultado de la anatomía patológica. Se comparó la sensibilidad de cada prueba con la del MAMMI-PET empleando la prueba de Chi cuadrado con nivel de significación de 0,05. Resultados: se evaluaron los datos de 32 pacientes y 44 lesiones (36 malignas y 8 benignas). Dos pacientes fueron excluidas del estudio. Se obtuvo una sensibilidad del 75% para el MAMMI-PET. La mejor sensibilidad se obtuvo para la resonancia magnética nuclear con 85,3% mientras que para la ecografía y la mamografía fue de 77,8 y 69,4%, respectivamente. No se evidenciaron diferencias estadísticamente significativas en el estudio comparativo entre el MAMMI-PET y el resto de las pruebas de imagen. Conclusiones: la sensibilidad del MAMMI-PET (75%) para el diagnóstico de cáncer de mama fue similar a las otras pruebas de imagen. (AU)


Introduction: The use of mammo dedicated breast PET (dbPET) scanners improves spacial resolution compared to Whole Body Pet images (WBPET). Mammography with Molecular Imaging PET (MAMMI-PET) is a new device with hardly any clinical studies. The aim of the study is to estimate the sensitivity of MAMMI-PET and compare it with classic imaging devices. Material and methods: A prospective and analytical observational study was carried out in a sample of patients with histologically confirmed breast cancer who were treated at our hospital between January 2017 and November 2018. Preoperative study of patients was performed with ultrasound, mammography, Magnetic Resonance Imaging (MRI) and MAMMI-PET. Findings (number and benignant/malignant lesions) of the anatomopathological (AP) study were used as the gold standard. Results between MAMMI-PET and AP were compared. The sensitivity of each test was compared with that of the MAMMI-PET using the Chi square test with a significance level of 0.05. Results: Data from 32 patients and 44 lesions (36 malignant and 8 benign) were evaluated. Two patients were excluded. The MAMMI-PET sensitivity was 75%. The best sensitivity was obtained for MRI with 85.3%, while for ultrasound and mammography it was 77.8% and 69.4% respectively. No statistically significant differences were found between the sensitivity of MAMMIPET and the rest of the imaging tests. Conclusions: The sensitivity obtained for the MAMMI-PET scanner (75%) was similar to the other imaging tests. (AU)


Asunto(s)
Humanos , Masculino , Femenino , Adulto , Persona de Mediana Edad , Neoplasias de la Mama/diagnóstico por imagen , Mamografía , Imagen por Resonancia Magnética , Estudios Prospectivos , Hospitales Generales
4.
Rev. senol. patol. mamar. (Ed. impr.) ; 36(1): 1-6, ene.-mar. 2023. tab, graf
Artículo en Español | IBECS | ID: ibc-EMG-477

RESUMEN

Objetivo: conocer la tasa de concordancia del ganglio marcado con semilla Magseed® con el ganglio centinela marcado mediante tecnecio, en las pacientes con enfermedad ganglionar en el momento del diagnóstico que han recibido tratamiento neoadyuvante. Pacientes y métodos: estudio descriptivo retrospectivo de 44 mujeres diagnosticadas de carcinoma de mama estadios cT1-4/cN1/cM0, que recibieron quimioterapia neoadyuvante entre enero 2016 y diciembre 2020, y que tras una reevaluación radiológica se realizaron una cirugía mamaria con ganglio centinela en el Hospital General Universitario de Alicante. En las pacientes cN1 con respuesta radiológica axilar completa, la detección del ganglio centinela se llevó a cabo mediante doble técnica, extrayéndose por lo menos 3 ganglios. Además, se realizó una disección axilar dirigida mediante semilla magnética Magseed®, para su correcta localización y escisión. Resultados: la tasa de concordancia al realizar la disección axilar dirigida fue del 93,2%. La tasa de respuesta completa tras la quimioterapia neoadyuvante fue del 45,45%. Conclusiones: la disección axilar dirigida mejora la estadificación axilar tras la quimioterapia neoadyuvante, ya que reduce la tasa de falsos negativos respecto a la biopsia selectiva del ganglio centinela de manera aislada. (AU)


Objectives:To know the concordance rate of the ganglion marked with Magseed® with the sentinel node marked by technetium, in patients with limph node disease at diagnosis, that had received neoadjuvant treatment. Patients and methods: Retrospective descriptive study of 44 women, diagnosed with stage cT1-4 / cN1 / cM0 breast carcinoma, who received neoadjuvant chemotherapy between January 2016 and December 2020, and who after radiological re-evaluation, have undergone breast surgery with sentinel node at the General University Hospital of Alicante. In cN1 patients with a complete axillary radiological response, detection of the sentinel node is performed using a double technique, removing at least 3 nodes. In addition, axillary dissection directed by Magseed® magnetic seed is performed, for its correct location and excision. Results: The concordance rate when performing targeted axillary dissection was 93.2%. The complete response rate after neoadjuvant chemotherapy was 45.45%. Conclusions: Targeted axillary dissection improves the axillary staging after neoadjuvant chemotherapy, since it improves the false negative rate with respect to sentinel lymph node biopsy in isolation. (AU)


Asunto(s)
Humanos , Femenino , Adulto , Persona de Mediana Edad , Anciano , Neoplasias de la Mama/diagnóstico , Biopsia del Ganglio Linfático Centinela , Axila , Estudios Retrospectivos , Epidemiología Descriptiva , Terapia Neoadyuvante
5.
Rev. senol. patol. mamar. (Ed. impr.) ; 36(1): 1-8, ene.-mar. 2023. tab, graf, ilus
Artículo en Español | IBECS | ID: ibc-EMG-478

RESUMEN

Introducción: la resonancia magnética es el método diagnóstico más preciso en la evaluación de la enfermedad residual en el cáncer de mama tratado con quimioterapia neoadyuvante. La mamografía con contraste puede ser una alternativa eficaz a la resonancia en la evaluación de tumor residual. Esta técnica disminuiría los costes significativamente, mejoraría el flujo de pacientes y apenas tiene contraindicaciones. Métodos: hemos realizado un estudio observacional y prospectivo en 43 pacientes con cáncer de mama tratadas con quimioterapia neoadyuvante. El estudio prequirúrgico incluyó tanto la mamografía con inyección de contraste como la resonancia magnética. Se correlacionó el tamaño tumoral residual por imagen con el estudio anatomopatológico posquirúrgico. Resultados: la MC presenta un coeficiente de correlación interclase superior al de la RM (0,9 vs. 0,7). Los valores de sensibilidad y especificidad de la MC (83,9 y 83,3%) son altos y equiparables a los de la RM (74,2 y 91,6%). Además, el valor predictivo negativo de la MC es mayor que el de la RM (66,7 vs. 57,9%) y VPP es muy similar (92,9 vs. 95,8%). Conclusión: la mamografía con contraste es una prueba equiparable a la resonancia magnética para la evaluación de la respuesta tumoral posneoadyuvancia en las pacientes con cáncer de mama. También es una prueba válida para la visualización de lesiones adicionales en la misma mama o en la contralateral. (AU)


Introduction: Magnetic resonance imaging is the most accurate diagnostic method for evaluating residual disease in breast cancer treated with neoadjuvant chemotherapy. Contrast-enhanced mammography can be an effective alternative to MRI in the evaluation of residual tumor. This technique would significantly reduce costs, improve patient flow and hardly has any contraindications. Methods: We have carried out an observational and prospective study in 43 patients with breast cancer treated with neoadjuvant chemotherapy. The pre-surgical study included both mammography with contrast injection and magnetic resonance imaging. Residual tumor size by imaging was correlated with the postoperative pathology study. Results: The CM presents a higher interclass correlation coefficient than the RM (0.9 vs. 0.7). The sensitivity and specificity values of CM (83.9% and 83.3%) are high and comparable to those of MRI (74.2% and 91.6%). Furthermore, the negative predictive value of CM is greater than that of MRI (66.7% vs 57.9%) and PPV is very similar (92.9% vs 95.8%). Conclusion: Contrast-enhanced mammography is a test comparable to magnetic resonance imaging for the evaluation of post-neoadjuvant tumor response in patients with breast cancer. It is also a valid test in visualizing additional lesions in the same or contralateral breast. (AU)


Asunto(s)
Humanos , Masculino , Femenino , Adulto , Persona de Mediana Edad , Anciano , Neoplasias de la Mama/diagnóstico por imagen , Neoplasias de la Mama/terapia , Mamografía , Estudios Prospectivos , Espectroscopía de Resonancia Magnética , Terapia Neoadyuvante
6.
Rev. senol. patol. mamar. (Ed. impr.) ; 36(1): 1-7, ene.-mar. 2023. tab, graf, ilus
Artículo en Inglés | IBECS | ID: ibc-EMG-479

RESUMEN

Introduction: HER2-positive tumors is one of the aggressive subtypes of breast cancer that indicate bad prognosis. Trastuzumab is one of the targeted therapy which inhibit HER2 receptors. Mutations/expression deregulations of the downstream of HER2 receptors could cause resistance to trastuzumab. PTEN is a tumor suppressor gene which directly regulates PI3K pathway which renders it one of the predictive markers of trastuzumab. Methods: In the present study, PTEN mutations were screened in 51 patients with HER2-positive breast cancer. Also, 16 patients were further analyzed for protein expression. Results: The mutations were detected in 3 out of 51 patients (5.9%). In addition, 56.3% of the 16 patients showed downregulation/loss of PTEN protein expression. The loss of PTEN was found in 75% of estrogen-receptor negative patients (p =0.130). Conclusions: The downregulation/loss of PTEN protein has the tendency to be associated with ER-negative reflecting its value as a treatment prediction marker. (AU)


Introducción: Los tumores HER2 positivos son uno de los subtipos agresivos de cáncer de mama que indican un mal pronóstico. Trastuzumab es una de las terapias dirigidas que inhiben los receptores HER2. Las mutaciones/desregulaciones de la expresión aguas abajo de los receptores HER2 podrían causar resistencia a trastuzumab. PTEN es un gen supresor de tumores que regula directamente la vía PI3K, lo que lo convierte en uno de los marcadores predictivos de trastuzumab. Metodos: En el presente estudio, las mutaciones de PTEN se examinaron en cincuenta y un pacientes con cáncer de mama positivo para HER2. Además, dieciséis pacientes fueron analizados más a fondo para determinar la expresión de proteínas. Resultados: Las mutaciones se detectaron en tres de 51 pacientes (5.9%). Además, el 56,3 % de los dieciséis pacientes mostró regulación baja/pérdida de la expresión de la proteína PTEN. También se encontró pérdida de PTEN en el 75% de los pacientes con receptores de estrógeno negativos. Conclusiones: La regulación baja/pérdida de la proteína PTEN tiende a asociarse con ER-negativo, lo que refleja su valor como marcador de predicción de tratamiento. (AU)


Asunto(s)
Humanos , Receptor ErbB-2 , Neoplasias de la Mama , Fosfohidrolasa PTEN , Trastuzumab , Mutación
7.
Rev. senol. patol. mamar. (Ed. impr.) ; 36(1): 1-8, ene.-mar. 2023.
Artículo en Español | IBECS | ID: ibc-EMG-480

RESUMEN

Presentamos la visión futurista que de su especialidad tienen 7 líderes de opinión estrechamente comprometidos con la patología mamaria. Las especialidades incluidas fueron radiología, patología, cirugía, cirugía plástica, medicina nuclear, oncología médica y oncología radioterápica. Los autores plasman, en este artículo, sus opiniones y criterios respecto a los avances que vislumbran en su futuro profesional.Conceptos clave como sistemas de cribado sin radiación, transcriptómica clínica, diagnóstico funcional del tumor, inteligencia artificial, navegación intraoperatoria, biopsia líquida, ADN tumoral circulante, reconstrucción con técnicas microquirúrgicas avanzadas, hipofraccionamiento extremo o teragnosis, son algunos de los conceptos presentados y discutidos.Los autores justifican sus puntos de vista, abriendo líneas de trabajo a tener en cuenta para optimizar esfuerzos y el conocimiento futuro. (AU)


We present the futuristic vision of their specialty of seven opinion leaders closely involved in breast pathology. The specialties were radiology, pathology, surgery, plastic surgery, nuclear medicine, medical oncology, and radiation oncology. In this article, the authors express their opinions and criteria regarding the advances they foresee for their professional future.Key concepts such as radiation-free screening systems, clinical transcriptomics, functional tumor diagnosis, artificial intelligence, intraoperative navigation, liquid biopsy, circulating tumor DNA, reconstruction with advanced microsurgical techniques, extreme hypofractionation or theragnosis are some of the concepts presented and discussed.The authors justify their points of view, suggesting lines of work to optimize efforts and future knowledge. (AU)


Asunto(s)
Humanos , Neoplasias de la Mama/patología , Neoplasias de la Mama/radioterapia , Neoplasias de la Mama/cirugía , Oncología por Radiación , Inteligencia Artificial , Tolerancia a Radiación , Medicina Nuclear
8.
Rev. senol. patol. mamar. (Ed. impr.) ; 36(1): 1-5, ene.-mar. 2023. ilus, tab
Artículo en Inglés | IBECS | ID: ibc-EMG-481

RESUMEN

Objective: To evaluate plans using volumetric modulated arc therapy techniques specifically for synchronous bilateral breast cancer patients undergoing right-sided lumpectomy, left-sided mastectomy and regional lymph node dissection (level I & II axillary lymph nodes). Methods: Eleven bilateral breast cancer patients underwent right-side lumpectomy, left-sided mastectomy, and regional lymph node dissection. The patients underwent CT simulation and 3D contouring had been done by Focalsim soft wear from Elekta and Monaco 5.1 treatment planning system by Elekta was used for planning, then the treated with either 6 or 10 MV photon beam energy using a Synergy lineal accelerator. Results: VMAT provided sufficient dose coverage and a high dose conformity index for all right breast, left chest wall and lymph node (level III axilla & IX lymph node) targets. The dose distribution was almost homogenous. The correlation between the monitor units and the conformity indices was significant for both the right and the left breast but not significant for the regional nodal volume target. There was no significant correlation between the monitor units and homogeneity indices for right or left targets, but there was a significant correlation for the nodal volumes. Conclusion: VMAT is an effective treatment technique for bilateral breast cancer patients, providing a highly conformal dose and a good dose distribution. The correlation between the MU and the dose conformity serves as a useful evaluation tool for this technique. (AU)


Objetivo: Evaluar una estrategia de tratamiento para pacientes con cáncer de mama bilateral sincrónico sometidas a tumorectomía del lado derecho, mastectomía del lado izquierdo y linfadenectomía. Métodos: Once pacientes con cáncer de mama bilateral se sometieron a tumorectomía del lado derecho, mastectomía del lado izquierdo y linfadenectomía de los niveles I y II axilares. La delimitación de volúmenes se realizó mediante Focalsim, la planificación se realizó con Monaco 5.1 de Elekta y se trataron con energía de haz de fotones de 6 o 10 MV utilizando un acelerador lineal Synergy. Resultados: VMAT proporcionó una cobertura de dosis suficiente y un alto índice de conformidad para todos los volúmenes de mama izquierda, mama derecha y ganglios linfáticos. La distribución de dosis fue casi homogénea. La correlación entre las unidades de monitor y los índices de conformidad fue significativa para ambas mamas, pero no llegó a la significación en volumen supraclavicular. No hubo una correlación significativa entre las unidades de monitor y los índices de homogeneidad para ambas mamas, pero hubo una correlación significativa para los ganglios linfáticos. Conclusión: VMAT es una técnica de tratamiento eficaz para pacientes con cáncer de mama bilateral, que proporciona una cobertura de dosis suficiente con un alto índice de conformidad. La correlación entre el número de unidades de monitor y el índice de conformidad sirve como una herramienta de evaluación útil para esta técnica. (AU)


Asunto(s)
Humanos , Femenino , Neoplasias de la Mama/tratamiento farmacológico , Ganglios Linfáticos , Mastectomía , Mastectomía Segmentaria
9.
Rev. senol. patol. mamar. (Ed. impr.) ; 36(1): 1-12, ene.-mar. 2023. ilus, tab
Artículo en Español | IBECS | ID: ibc-EMG-483

RESUMEN

El período perioperatorio es determinante en los resultados oncológicos tras la cirugía de mama, pues numerosos factores influyen en la función inmune, la angiogénesis y la diseminación tumoral. El objetivo de esta revisión fue identificar los factores de riesgo perioperatorios asociados con la proliferación y la recurrencia del cáncer tras la cirugía oncológica de mama, para ello se siguió el protocolo PRISMA (registro en PROSPERO con número CRD42021227297). Tras una búsqueda bibliográfica en PubMed, Google Scholar, Web of Science y Embase, guías clínicas europeas y Cochrane, se incluyeron estudios en inglés o español, que cumplieran criterios de calidad establecidos. Las variables cualitativas se presentaron según su distribución de frecuencias. Se analizaron 34 estudios de las 253 publicaciones identificadas, utilizando el programa estadístico IBM SPSS Statistics versión 24.0 para Windows. El tiempo de seguimiento fue de 36 meses de media (rango amplio entre 1 día y 5 años), encontrando 10% de recurrencias tumorales tras la cirugía de mama y mayor supervivencia libre de tumor no significativa en caso de anestesia intravenosa libre de opioides frente a anestesia inhalatoria con opioides. En general se encuentran mejores resultados oncológicos con antiinflamatorios, ketamina, bloqueantes del sistema nervioso simpático, anestésicos locales y buen control del dolor postoperatorio. Se necesitan ensayos clínicos multicéntricos que analicen los factores pronósticos oncológicos de forma independiente, con seguimiento superior a la supervivencia tumoral, que estudien los factores histológicos, anatomopatológicos y de extensión asociados a la agresividad oncológica. (AU)


Perioperative period is decisive in oncological results after breast surgery, because of numerous factors are involved in immune function, angiogenesis and tumor spread. The aim of this review was to identify perioperative risk factors associated with cancer proliferation and recurrence after breast cancer surgery. PRISMA protocol was followed for this purpose (PROSPERO registration number CRD42021227297). After bibliographic search in PubMed, Google Scholar, Web of Science and Embase, European clinical guidelines and Cochrane, we included studies in English or Spanish, which met established quality criteria. The qualitative variables were presented according to their frequency distribution. We analyzed 34 studies of the 253 identified publications, using the statistical program IBM SPSS Statistics version 24.0 for Windows. The follow-up time was 36 months on average (wide range between 1 day and 5 years), finding 10% tumor recurrences after breast surgery and increased tumor-free survival in case of opioid-free intravenous anesthesia versus inhalation anesthesia with opioids, but no significant differences were found. Recurrence data were better every time that anti-inflammatories, ketamine, sympathetic nervous system blockers and, local anesthetics were used and good postoperative pain control registered. There is a need for multicenter clinical trials that analyze oncological prognostic factors independently, with follow-up greater than tumor survival, and that study the histological, pathological and extension factors associated with oncological aggressiveness. (AU)


Asunto(s)
Humanos , Neoplasias de la Mama/cirugía , Neoplasias de la Mama/diagnóstico , Factores de Riesgo , Periodo Perioperatorio , Anestesia , Dolor
12.
Am J Case Rep ; 24: e938668, 2023 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-36721358

RESUMEN

BACKGROUND Positron emission tomography/computed tomography (PET/CT) has become one of the most prominent modalities worldwide for the diagnosis and surveillance of malignancies. Current clinical imaging guidelines report adverse reactions following PET/CT, especially due to contrast-induced toxicities, such as contrast-induced nephropathy and other rare reactions attributed to a hypersensitivity immune response, such as bronchospasm. Other rare lung toxicities were reported in a few case reports. Herein, we report repeated episodes of alveolar hemorrhage, a novel adverse response to PET/CT, occurring on 2 separate occasions 5 months apart. CASE REPORT A 57 year-old female patient with breast carcinoma managed by mastectomy, adjuvant chemotherapy, irradiation, and hormonal therapy presented with massive alveolar hemorrhage following PET/CT performed for surveillance 13 years after completion of chemotherapy and irradiation. An additional episode of massive alveolar hemorrhage occurred 5 months later following PET/CT, with respiratory failure requiring mechanical ventilation. Fluorine-18 fluorodeoxyglucose ([¹8F] FDG) and iohexol were used for imaging on both occasions. Common causes of alveolar hemorrhage, including malignancy, were excluded. CONCLUSIONS The repeated episodes immediately following PET/CT and the earlier and more intense respiratory failure following the second event raise the possibility of an immune-mediated alveolar hemorrhage in response to either the administration of iodinated radiocontrast agent or to [¹8F] FDG.


Asunto(s)
Neoplasias de la Mama , Femenino , Humanos , Persona de Mediana Edad , Fluorodesoxiglucosa F18 , Mastectomía , Tomografía Computarizada por Tomografía de Emisión de Positrones , Hemorragia/inducido químicamente , Hemorragia/diagnóstico por imagen
13.
Rev. esp. med. nucl. imagen mol. (Ed. impr.) ; 42(1): 10-15, ene.-feb. 2023. ilus, tab, graf
Artículo en Español | IBECS | ID: ibc-214743

RESUMEN

Objetivo La respuesta histopatológica a la quimioterapia neoadyuvante (NAC) es esencial en pacientes con cáncer de mama. La predicción de la respuesta histopatológica a la NAC en pacientes con cáncer de mama localmente avanzado es esencial para una estrategia de tratamiento óptima. El enfoque actual del tratamiento adyuvante o neoadyuvante se basa en el subtipo molecular. La obesidad puede afectar la respuesta a la quimioterapia. El objetivo de este estudio es evaluar la relación entre la actividad metabólica del tejido adiposo (AT) y la respuesta histopatológica de la NAC. Definir, la asociación del índice de masa corporal (IMC) y el valor del «Standard Uptake Value» (SUV) de AT medido por tomografía por emisión de positrones (PET/TC) con la respuesta a la quimioterapia neoadyuvante. Material y métodos Hemos incluido 116 pacientes consecutivos con cáncer de mama, estadio II y III, que acudieron para la realización de un PET/TC previo a NAC entre 2016 y 2020. Hemos calculado los parámetros metabólicos del tejido adiposo visceral (SUV del VAT), del tejido adiposo subcutáneo (SUV del SAT) y la relación entre ambos (relación V/S). Todos estos biomarcadores los hemos relacionado con la respuesta histopatológica de los pacientes. Resultados El análisis univariante muestra una correlación significativa entre la respuesta histopatológica con el estadio clínico (p<0,001), HER2 positivo (p<0,001), SUV del VAT (p=0,037), densidad del VAT (p=0,043) y la relación V/S (p=0,003). El análisis multivariante muestra una significación estadística entre HER2 positivo y la relación V/S con la respuesta histopatológica. Se evidencia una correlación positiva del IMC con el volumen del IVA (p<0,001), SUV del IVA (p<0,016), volumen del SAT (p<0,001) y el SUV del SAT (p<0,001). Se evidencia una correlación negativa del IMC con la relación V/S (p=0,039) y la densidad del SAT (p=0,003) (AU)


Introduction and objective Prediction of the pathologic response to neoadjuvant chemotherapy (NAC) in patients with locally advanced breast cancer is essential for optimal treatment strategy. The current approach of adjuvant or neoadjuvant treatment is based on the molecular subtype. Obesity may have affected chemotherapy response. This study aims to evaluate the relationship between metabolic activity of adipose tissue (AT) and pathological responses to NAC. And to define the association with body mass index (BMI) and metabolic parameters of standardized uptake value (SUV) of adipose tissue measured by positron emission computed tomography (PET/CT). Material and methods One-hundred and sixteen consecutive patients with stage II and III breast cancer who underwent PET/CT before receiving NAC, were evaluated in the study. Metabolic parameters of visceral adipose tissue (VAT-SUV), subcutaneous adipose tissue (SAT-SUV), and calculated SUV of visceral-to-subcutaneous ratio (V/S-ratio) were regarded. The relationship between SUV of AT and pathologic response was evaluated from medical records retrospectively. Results Univariate-analysis revealed that good pathological response was significantly associated with clinical stage (p<0.001), HER-2 positivity (p<0.001), VAT-SUV (p=0.037), VAT-density (p=0.043) and V/S-ratio (p=0.003). In multivariate-analysis clinical stage, HER-2 positivity and V/S-ratio were found to have statistically effect on pathological response. VAT-volume (p<0.001), VAT-SUV (p=0.016), SAT-volume (p<0.001) and SAT-SUV (p<0.001) has positive correlation with BMI value. On the other hand, V/S-ratio (p=0.039) and SAT-density (p=0.003) has negative correlation with BMI. Conclusion Metabolic activity of AT is associated with BMI and effected chemotherapy responses. Low V/S ratio was associated with high BMI and poor pathological response to NAC. V/S ratio may be a useful marker for the prediction of NAC responses (AU)


Asunto(s)
Humanos , Femenino , Adulto , Persona de Mediana Edad , Anciano , Tejido Adiposo/diagnóstico por imagen , Tejido Adiposo/patología , Neoplasias de la Mama , Terapia Neoadyuvante , Tomografía Computarizada por Tomografía de Emisión de Positrones/métodos , Neoplasias de la Mama/diagnóstico por imagen , Neoplasias de la Mama/tratamiento farmacológico , Neoplasias de la Mama/patología
14.
Genet Res (Camb) ; 2023: 4683831, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36721432

RESUMEN

Methylenetetrahydrofolate reductase (MTHFR) plays a major role in the metabolism of folates and homocysteine, which in turn can affect gene expression and ultimately promote the development of breast cancer. Thus, mutations in the MTHFR gene could influence homocysteine, methionine, and S-adenosylmethionine levels and, indirectly, nucleotide levels. Imbalance in methionine and S-adenosylmethionine synthesis affects protein synthesis and methylation. These changes, which affect gene expression, may ultimately promote the development of breast cancer. We therefore hypothesized that such mutations could also play an important role in the occurrence and pathogenesis of breast cancer in a Malian population. In this study, we used the PCR-RFLP technique to identify the different genotypic profiles of the C677T MTHFR polymorphism in 127 breast cancer women and 160 healthy controls. The genotypic distribution of the C677T polymorphism in breast cancer cases was 88.2% for CC, 11.0% for CT, and 0.8% for TT. Healthy controls showed a similar distribution with 90.6% for CC, 8.8% for CT, and 0.6% for TT. We found no statistical association between the C677T polymorphism and breast cancer risk for the codominant models CT and TT (p > 0.05). The same trend was observed when the analysis was extended to other genetic models, including dominant (p = 0.50), recessive (p = 0.87), and additive (p = 0.50) models. The C677T polymorphism of MTHFR gene did not influence the risk of breast cancer in the Malian samples.


Asunto(s)
Neoplasias de la Mama , Metilenotetrahidrofolato Reductasa (NADPH2) , Femenino , Humanos , Neoplasias de la Mama/genética , Homocisteína , Malí , Metionina , Metilenotetrahidrofolato Reductasa (NADPH2)/genética , S-Adenosilmetionina
15.
Cell Commun Signal ; 21(1): 28, 2023 Jan 31.
Artículo en Inglés | MEDLINE | ID: mdl-36721232

RESUMEN

The MYC oncogenic family is dysregulated in diverse tumors which is generally linked to the poor prognosis of tumors. The members in MYC family are transcription factors which are responsible for the regulation of various genes expression. Among them, c-MYC is closely related to the progression of tumors. Furthermore, c-MYC aberrations is tightly associated with the prevalence of breast cancer. Tumor microenvironment (TME) is composed of many different types of cellular and non-cellular factors, mainly including cancer-associated fibroblasts, tumor-associated macrophages, vascular endothelial cells, myeloid-derived suppressor cells and immune cells, all of which can affect the diagnosis, prognosis, and therapeutic efficacy of breast cancer. Importantly, the biological processes occurred in TME, such as angiogenesis, immune evasion, invasion, migration, and the recruition of stromal and tumor-infiltrating cells are under the modulation of c-MYC. These findings indicated that c-MYC serves as a critical regulator of TME. Here, we aimed to summarize and review the relevant research, thus to clarify c-MYC is a key mediator between breast cancer cells and TME. Video Abstract.


Asunto(s)
Neoplasias de la Mama , Genes myc , Microambiente Tumoral , Fibroblastos Asociados al Cáncer , Células Endoteliales , Expresión Génica , Evasión Inmune
16.
Mol Cancer Ther ; 22(2): 192-204, 2023 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-36722142

RESUMEN

Aberrant cell-cycle progression is characteristic of melanoma, and CDK4/6 inhibitors, such as palbociclib, are currently being tested for efficacy in this disease. Despite the promising nature of CDK4/6 inhibitors, their use as single agents in melanoma has shown limited clinical benefit. Herein, we discovered that treatment of tumor cells with palbociclib induces the phosphorylation of the mRNA translation initiation factor eIF4E. When phosphorylated, eIF4E specifically engenders the translation of mRNAs that code for proteins involved in cell survival. We hypothesized that cancer cells treated with palbociclib use upregulated phosphorylated eIF4E (phospho-eIF4E) to escape the antitumor benefits of this drug. Indeed, we found that pharmacologic or genetic disruption of MNK1/2 activity, the only known kinases for eIF4E, enhanced the ability of palbociclib to decrease clonogenic outgrowth. Moreover, a quantitative proteomics analysis of melanoma cells treated with combined MNK1/2 and CDK4/6 inhibitors showed downregulation of proteins with critical roles in cell-cycle progression and mitosis, including AURKB, TPX2, and survivin. We also observed that palbociclib-resistant breast cancer cells have higher basal levels of phospho-eIF4E, and that treatment with MNK1/2 inhibitors sensitized these palbociclib-resistant cells to CDK4/6 inhibition. In vivo we demonstrate that the combination of MNK1/2 and CDK4/6 inhibition significantly increases the overall survival of mice compared with either monotherapy. Overall, our data support MNK1/2 inhibitors as promising drugs to potentiate the antineoplastic effects of palbociclib and overcome therapy-resistant disease.


Asunto(s)
Neoplasias de la Mama , Melanoma , Inhibidores de Proteínas Quinasas , Animales , Ratones , Factor 4E Eucariótico de Iniciación , Melanoma/tratamiento farmacológico , Piperazinas/farmacología , Piridinas/farmacología , Neoplasias de la Mama/tratamiento farmacológico , Inhibidores de Proteínas Quinasas/farmacología , Antineoplásicos/farmacología
17.
Oncology (Williston Park) ; 37(1): 19-24, 2023 01 26.
Artículo en Inglés | MEDLINE | ID: mdl-36724138

RESUMEN

BACKGROUND: Cancer care in rural areas poses unique challenges, including access and proximity to care. This study examined differences in time to treatment initiation (TTI), a potential surrogate for access, and predictors of overall survival (OS) between rural and nonrural patients with breast cancer. METHODS: Women with stage I to III breast cancer diagnosed between 2004 and 2012 in facilities accredited by the National Cancer Database of Commission on Cancer (CoC) were included. Differences between rural and nonrural patients in demographics, disease and treatment characteristics, socioeconomic factors, and TTI were assessed by χ2 test. The effects on OS of age, insurance status, cancer center type, community median income, percentage of the community who had not graduated from high school, and TTI were assessed using Cox models. RESULTS: The study population was composed of 1,205,031 patients, 18,417 (2%) of whom were rural. Compared with nonrural patients, rural patients were more likely to be older, to be White, to receive care at nonacademic centers, to have government insurance or annual income less than $38,000, and to be less educated (P < .0001). Rural patients also had shorter median TTI (3 vs 4 weeks; P < .0001), which was associated with improved OS (P < .0001), and were more likely to have TTI less than 4 weeks and less than 8 weeks (P < .0001 for both). Shorter TTI (both <4 weeks vs 8 weeks and 4-8 weeks vs >8 weeks) was also associated with improved OS (P < .0001 for both). After adjusting for disease stage and demographic-, socioeconomic-, and treatment-related factors, rural status was associated with improved OS compared with nonrural status (HR, 0.92; 95% CI, 0.89-0.96; P < .0001). CONCLUSIONS: Despite several adverse demographic and socioeconomic factors, rural patients with breast cancer with access to CoC-accredited facilities had significantly shorter TTI and better OS compared with nonrural patients. The clinical significance of this is undetermined; however, these data suggest that improving TTI can mitigate disparities in rural cancer care.


Asunto(s)
Neoplasias de la Mama , Carcinoma de Células Escamosas , Humanos , Femenino , Neoplasias de la Mama/terapia , Tiempo de Tratamiento , Factores Socioeconómicos , Carcinoma de Células Escamosas/terapia , Cobertura del Seguro
18.
Cell Death Dis ; 14(2): 76, 2023 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-36725842

RESUMEN

Although programmed death-ligand 1 (PD-L1) inhibitors have achieved some therapeutic success in breast cancer, their efficacy is limited by low therapeutic response rates, which is closely related to the immune escape of breast cancer cells. Tissue differentiation inducing non-protein coding RNA (TINCR), a long non-coding RNA, as an oncogenic gene associated with the progression of various malignant tumors, including breast cancer; however, the role of TINCR in tumor immunity, especially in breast cancer, remains unclear. We confirmed that TINCR upregulated PD-L1 expression in vivo and in vitro, and promoted the progression of breast cancer. Next, we revealed that TINCR knockdown can significantly improve the therapeutic effect of PD-L1 inhibitors in breast cancer in vivo. Mechanistically, TINCR recruits DNMT1 to promote the methylation of miR-199a-5p loci and inhibit its transcription. Furthermore, in the cytoplasm, TINCR potentially acts as a molecular sponge of miR-199a-5p and upregulates the stability of USP20 mRNA through a competing endogenous RNA (ceRNA) regulatory mechanism, thus promoting PD-L1 expression by decreasing its ubiquitination level. IFN-γ stimulation activates STAT1 by phosphorylation, which migrates into the nucleus to promote TINCR transcription. This is the first study to describe the regulatory role of TINCR in breast cancer tumor immunity, broadening the current paradigm of the functional diversity of TINCR in tumor biology. In addition, our study provides new research directions and potential therapeutic targets for PD-L1 inhibitors in breast cancer.


Asunto(s)
Neoplasias de la Mama , MicroARNs , ARN Largo no Codificante , Humanos , Femenino , MicroARNs/genética , MicroARNs/metabolismo , Neoplasias de la Mama/genética , Neoplasias de la Mama/terapia , Neoplasias de la Mama/patología , ARN Largo no Codificante/genética , ARN Largo no Codificante/metabolismo , Antígeno B7-H1/genética , Antígeno B7-H1/metabolismo , Inhibidores de Puntos de Control Inmunológico , Inmunoterapia , Línea Celular Tumoral , Regulación Neoplásica de la Expresión Génica , Proliferación Celular/genética , Ubiquitina Tiolesterasa/metabolismo , Factor de Transcripción STAT1/genética , Factor de Transcripción STAT1/metabolismo
19.
Sci Rep ; 13(1): 1868, 2023 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-36725900

RESUMEN

Breast cancer is a global health issue affecting 2.3 million women per year, causing death in over 600,000. Mammography (and biopsy) is the gold standard for screening and diagnosis. Whilst effective, this test exposes individuals to radiation, has limitations to its sensitivity and specificity and may cause moderate to severe discomfort. Some women may also find this test culturally unacceptable. This proof-of-concept study, combining bottom-up proteomics with Matrix Assisted Laser Desorption Ionisation Mass Spectrometry (MALDI MS) detection, explores the potential for a non-invasive technique for the early detection of breast cancer from fingertip smears. A cohort of 15 women with either benign breast disease (n = 5), early breast cancer (n = 5) or metastatic breast cancer (n = 5) were recruited from a single UK breast unit. Fingertips smears were taken from each patient and from each of the ten digits, either at the time of diagnosis or, for metastatic patients, during active treatment. A number of statistical analyses and machine learning approaches were investigated and applied to the resulting mass spectral dataset. The highest performing predictive method, a 3-class Multilayer Perceptron neural network, yielded an accuracy score of 97.8% when categorising unseen MALDI MS spectra as either the benign, early or metastatic cancer classes. These findings support the need for further research into the use of sweat deposits (in the form of fingertip smears or fingerprints) for non-invasive screening of breast cancer.


Asunto(s)
Neoplasias de la Mama , Humanos , Femenino , Neoplasias de la Mama/diagnóstico , Neoplasias de la Mama/patología , Prueba de Estudio Conceptual , Detección Precoz del Cáncer/métodos , Mamografía , Sensibilidad y Especificidad
20.
Sci Rep ; 13(1): 1811, 2023 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-36725965

RESUMEN

In this study, we aimed to evaluate the benefits and losses of mammography with and without implant displacement (ID) and propose an appropriate imaging protocol for the screening of breasts with implants. We evaluated mammograms of 162 breasts in 96 patients including 71 breasts with biopsy-proven cancers. Mammography of each breast included standard MLO and ID MLO images. We reviewed the mammograms using clinical image quality criteria, which consist of parameters that evaluate the proper positioning of the breast and the image resolution. Standard MLO images showed significantly higher scores for proper positioning but showed significantly lower scores for image resolution than the ID MLO images. Moreover, standard MLO images showed significantly higher kVp, mAs, and compressed breast thickness than the ID MLO images. The organ dose was also higher in the standard MLO images than in the ID MLO images, but the difference was not statistically significant. In mammography with proven cancer, ID MLO images showed significantly higher degree of cancer visibility than standard MLO images. For screening mammography in patients with breast implants, ID MLO view alone is sufficient for MLO projection with reducing the patient's radiation dose without compromising the breast cancer detection capability, especially in dense breasts with subpectoral implants.


Asunto(s)
Implantes de Mama , Neoplasias de la Mama , Humanos , Femenino , Mamografía/métodos , Neoplasias de la Mama/diagnóstico por imagen , Neoplasias de la Mama/cirugía , Detección Precoz del Cáncer , Mama/diagnóstico por imagen
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