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1.
Am J Hematol ; 98(6): 913-921, 2023 06.
Artículo en Inglés | MEDLINE | ID: mdl-36964941

RESUMEN

T-cell prolymphocytic leukemia (T-PLL) is a rare, post-thymic T-cell neoplasm with a diverse clinical course. T-PLL is typically associated with a poor prognosis; however, a subset of patients have inactive disease on initial presentation. There is a lack of accurate delineation of the disease based on initial clinical presentation and pathological assessment, hindering clinical decision-making. To characterize and delineate disease subtypes based on initial clinical presentation and pathologic assessment, we retrospectively reviewed 81 patients with T-PLL treated at our institution. We compared patients with T-PLL who initially presented with a relatively indolent or stable disease course to those with an aggressive disease course. Clinicopathologic characteristics, overall survival (OS), and prognostic factors were analyzed. Patients with inactive disease had a significantly longer OS than patients with active disease. At diagnosis, presence of B symptoms, low hemoglobin, low platelet count, lymphocyte doubling time of fewer than 3 months, and abnormal cytogenetics were associated with shorter OS. Cell morphology, immunophenotype, absolute lymphocyte count, lactate dehydrogenase levels, involvement of liver, spleen, skin or central nervous system, presence of TCL1 rearrangement or inv (14)/t(14;14), presence of chromosome 8 abnormalities, and presence of deletion of 11q were not associated with significant OS difference among the patients. Receiving alemtuzumab as first-line treatment and consolidation with allogeneic hematopoietic stem cell transplant were associated with better outcomes. T-PLL inactive and active disease subtypes can exhibit overlapping yet different clinical and pathological features. We describe several prognostic factors at diagnosis that can be used for risk stratification and aid in guiding treatment decisions.


Asunto(s)
Trasplante de Células Madre Hematopoyéticas , Leucemia Prolinfocítica de Células T , Humanos , Leucemia Prolinfocítica de Células T/diagnóstico , Leucemia Prolinfocítica de Células T/genética , Leucemia Prolinfocítica de Células T/terapia , Pronóstico , Estudios Retrospectivos , Aberraciones Cromosómicas , Progresión de la Enfermedad
2.
Clin Infect Dis ; 75(Suppl 2): S294-S297, 2022 10 03.
Artículo en Inglés | MEDLINE | ID: mdl-35779273

RESUMEN

We described bacterial/fungal coinfections and antibiotic-resistant infections among inpatients with a diagnosis of coronavirus disease 2019 (COVID-19) and compared findings in those with a diagnosis of influenza like illness. Less than 10% of inpatients with COVID-19 had bacterial/fungal coinfection. Longer lengths of stay, critical care stay, and mechanical ventilation contribute to increased incidence of hospital-onset infections among inpatients with COVID-19.


Asunto(s)
COVID-19 , Coinfección , Antibacterianos/uso terapéutico , Coinfección/epidemiología , Hospitales , Humanos , Pacientes Internos , SARS-CoV-2 , Estados Unidos
3.
J Interprof Care ; 35(6): 884-889, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-32921211

RESUMEN

Students pursuing careers in health professions may initially approach their training with preconceived ideas and perceptions of those who practice different health-related careers. Little research has been conducted on athletic training students and professional stereotypes or athletic training students and interprofessional education in general. Because interprofessional education may provide some positive effects on stereotypes, the goal of this study was to measure undergraduate health professions student stereotypes of athletic training students before and after an interprofessional case study program. Undergraduate nursing and public health interprofessional case study program participants assessed various relational and intrapersonal capabilities for their own professions and the athletic training profession, pre-post-program. For nursing student participants with athletic training students on their team, perceptions of their own profession and the athletic training profession significantly (p <.05) increased as compared to those with no athletic training student on their team. For public health student participants, although scores increased, no significant differences were found. Interprofessional collaborative experiences may decrease negative stereotypes of other professions, including athletic training.


Asunto(s)
Bachillerato en Enfermería , Deportes , Estudiantes de Enfermería , Actitud del Personal de Salud , Empleos en Salud , Humanos , Relaciones Interprofesionales
4.
Transplant Cell Ther ; 30(9): 887.e1-887.e9, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-38740140

RESUMEN

Nodal peripheral T cell lymphomas (PTCLs) are challenging subsets of non-Hodgkin lymphomas characterized by their heterogeneity and aggressive clinical behavior. Given the mixed outcomes reported in previous studies, the efficacy of autologous hematopoietic cell transplantation (auto-HCT) as a consolidation strategy following initial chemotherapy response remains uncertain. This study aims to evaluate the impact of upfront auto-HCT consolidation on overall survival (OS) and event-free survival (EFS) among patients with nodal PTCL who achieved a complete or partial response to initial chemotherapy. A retrospective cohort study was conducted at Moffitt Cancer Center, involving 123 patients with nodal PTCL treated between February 2005 and February 2021. Patients were stratified into 2 groups based on whether they received auto-HCT as part of their initial treatment strategy. Kaplan-Meier method and Cox proportional hazard models were used for statistical analysis to compare OS and EFS between groups. Patients undergoing auto-HCT after first response demonstrated significantly longer median OS (12.3 versus 4.3 yr; P = .035) and EFS (6.2 versus 2.2 yr; P = .003) compared to those who did not. Multivariate analyses indicated that auto-HCT at first response and younger age at diagnosis were favorable prognostic factors. The findings suggest that upfront auto-HCT consolidation can significantly improve long-term outcomes in patients with nodal PTCL, supporting the strategy of early auto-HCT consideration and referral following initial chemotherapy response. These results underscore the importance of integrating upfront auto-HCT into the treatment paradigm for nodal PTCL, emphasizing early referral to transplantation services to optimize patient outcomes.


Asunto(s)
Trasplante de Células Madre Hematopoyéticas , Linfoma de Células T Periférico , Trasplante Autólogo , Humanos , Linfoma de Células T Periférico/terapia , Linfoma de Células T Periférico/mortalidad , Trasplante de Células Madre Hematopoyéticas/mortalidad , Femenino , Masculino , Persona de Mediana Edad , Adulto , Estudios Retrospectivos , Anciano , Adulto Joven , Resultado del Tratamiento
5.
Nat Commun ; 15(1): 1203, 2024 Feb 08.
Artículo en Inglés | MEDLINE | ID: mdl-38331987

RESUMEN

DNA damage resistance is a major barrier to effective DNA-damaging therapy in multiple myeloma (MM). To discover mechanisms through which MM cells overcome DNA damage, we investigate how MM cells become resistant to antisense oligonucleotide (ASO) therapy targeting Interleukin enhancer binding factor 2 (ILF2), a DNA damage regulator that is overexpressed in 70% of MM patients whose disease has progressed after standard therapies have failed. Here, we show that MM cells undergo adaptive metabolic rewiring to restore energy balance and promote survival in response to DNA damage activation. Using a CRISPR/Cas9 screening strategy, we identify the mitochondrial DNA repair protein DNA2, whose loss of function suppresses MM cells' ability to overcome ILF2 ASO-induced DNA damage, as being essential to counteracting oxidative DNA damage. Our study reveals a mechanism of vulnerability of MM cells that have an increased demand for mitochondrial metabolism upon DNA damage activation.


Asunto(s)
Mieloma Múltiple , Humanos , Mieloma Múltiple/genética , ADN Helicasas/metabolismo , Reprogramación Metabólica , Reparación del ADN , Daño del ADN
6.
Infect Control Hosp Epidemiol ; 44(2): 238-245, 2023 02.
Artículo en Inglés | MEDLINE | ID: mdl-35586888

RESUMEN

OBJECTIVES: The coronavirus disease 2019 pandemic caused substantial changes to healthcare delivery and antibiotic prescribing beginning in March 2020. To assess pandemic impact on Clostridioides difficile infection (CDI) rates, we described patients and trends in facility-level incidence, testing rates, and percent positivity during 2019-2020 in a large cohort of US hospitals. METHODS: We estimated and compared rates of community-onset CDI (CO-CDI) per 10,000 discharges, hospital-onset CDI (HO-CDI) per 10,000 patient days, and C. difficile testing rates per 10,000 discharges in 2019 and 2020. We calculated percent positivity as the number of inpatients diagnosed with CDI over the total number of discharges with a test for C. difficile. We used an interrupted time series (ITS) design with negative binomial and logistic regression models to describe level and trend changes in rates and percent positivity before and after March 2020. RESULTS: In pairwise comparisons, overall CO-CDI rates decreased from 20.0 to 15.8 between 2019 and 2020 (P < .0001). HO-CDI rates did not change. Using ITS, we detected decreasing monthly trends in CO-CDI (-1% per month, P = .0036) and HO-CDI incidence (-1% per month, P < .0001) during the baseline period, prior to the COVID-19 pandemic declaration. We detected no change in monthly trends for CO-CDI or HO-CDI incidence or percent positivity after March 2020 compared with the baseline period. CONCLUSIONS: While there was a slight downward trajectory in CDI trends prior to March 2020, no significant change in CDI trends occurred during the COVID-19 pandemic despite changes in infection control practices, antibiotic use, and healthcare delivery.


Asunto(s)
COVID-19 , Clostridioides difficile , Infecciones por Clostridium , Infección Hospitalaria , Humanos , Infección Hospitalaria/epidemiología , Infección Hospitalaria/tratamiento farmacológico , Pandemias , COVID-19/epidemiología , Infecciones por Clostridium/epidemiología , Infecciones por Clostridium/tratamiento farmacológico , Hospitales , Antibacterianos/uso terapéutico
7.
bioRxiv ; 2023 Feb 22.
Artículo en Inglés | MEDLINE | ID: mdl-36865225

RESUMEN

DNA damage resistance is a major barrier to effective DNA-damaging therapy in multiple myeloma (MM). To discover novel mechanisms through which MM cells overcome DNA damage, we investigated how MM cells become resistant to antisense oligonucleotide (ASO) therapy targeting ILF2, a DNA damage regulator that is overexpressed in 70% of MM patients whose disease has progressed after standard therapies have failed. Here, we show that MM cells undergo an adaptive metabolic rewiring and rely on oxidative phosphorylation to restore energy balance and promote survival in response to DNA damage activation. Using a CRISPR/Cas9 screening strategy, we identified the mitochondrial DNA repair protein DNA2, whose loss of function suppresses MM cells' ability to overcome ILF2 ASO-induced DNA damage, as being essential to counteracting oxidative DNA damage and maintaining mitochondrial respiration. Our study revealed a novel vulnerability of MM cells that have an increased demand for mitochondrial metabolism upon DNA damage activation. STATEMENT OF SIGNIFICANCE: Metabolic reprogramming is a mechanism through which cancer cells maintain survival and become resistant to DNA-damaging therapy. Here, we show that targeting DNA2 is synthetically lethal in myeloma cells that undergo metabolic adaptation and rely on oxidative phosphorylation to maintain survival after DNA damage activation.

8.
J Hosp Med ; 17(12): 984-989, 2022 12.
Artículo en Inglés | MEDLINE | ID: mdl-36039477

RESUMEN

The disruptions of the coronavirus disease 2019 (COVID-19) pandemic impacted the delivery and utilization of healthcare services with potential long-term implications for population health and the hospital workforce. Using electronic health record data from over 700 US acute care hospitals, we documented changes in admissions to hospital service areas (inpatient, observation, emergency room [ER], and same-day surgery) during 2019-2020 and examined whether surges of COVID-19 hospitalizations corresponded with increased inpatient disease severity and death rate. We found that in 2020, hospitalizations declined by 50% in April, with greatest declines occurring in same-day surgery (-73%). The youngest patients (0-17) experienced largest declines in ER, observation, and same-day surgery admissions; inpatient admissions declined the most among the oldest patients (65+). Infectious disease admissions increased by 52%. The monthly measures of inpatient case mix index, length of stay, and non-COVID death rate were higher in all months in 2020 compared with respective months in 2019.


Asunto(s)
COVID-19 , Pandemias , Humanos , Hospitalización , Servicio de Urgencia en Hospital , Hospitales
9.
Nat Med ; 28(3): 557-567, 2022 03.
Artículo en Inglés | MEDLINE | ID: mdl-35241842

RESUMEN

Myelodysplastic syndromes (MDS) are heterogeneous neoplastic disorders of hematopoietic stem cells (HSCs). The current standard of care for patients with MDS is hypomethylating agent (HMA)-based therapy; however, almost 50% of MDS patients fail HMA therapy and progress to acute myeloid leukemia, facing a dismal prognosis due to lack of approved second-line treatment options. As cancer stem cells are the seeds of disease progression, we investigated the biological properties of the MDS HSCs that drive disease evolution, seeking to uncover vulnerabilities that could be therapeutically exploited. Through integrative molecular profiling of HSCs and progenitor cells in large patient cohorts, we found that MDS HSCs in two distinct differentiation states are maintained throughout the clinical course of the disease, and expand at progression, depending on recurrent activation of the anti-apoptotic regulator BCL-2 or nuclear factor-kappa B-mediated survival pathways. Pharmacologically inhibiting these pathways depleted MDS HSCs and reduced tumor burden in experimental systems. Further, patients with MDS who progressed after failure to frontline HMA therapy and whose HSCs upregulated BCL-2 achieved improved clinical responses to venetoclax-based therapy in the clinical setting. Overall, our study uncovers that HSC architectures in MDS are potential predictive biomarkers to guide second-line treatments after HMA failure. These findings warrant further investigation of HSC-specific survival pathways to identify new therapeutic targets of clinical potential in MDS.


Asunto(s)
Compuestos Bicíclicos Heterocíclicos con Puentes , Síndromes Mielodisplásicos , Compuestos Bicíclicos Heterocíclicos con Puentes/farmacología , Compuestos Bicíclicos Heterocíclicos con Puentes/uso terapéutico , Células Madre Hematopoyéticas/patología , Humanos , Síndromes Mielodisplásicos/tratamiento farmacológico , Síndromes Mielodisplásicos/genética , Síndromes Mielodisplásicos/patología , Proteínas Proto-Oncogénicas c-bcl-2/genética , Sulfonamidas
10.
Open Forum Infect Dis ; 8(6): ofab236, 2021 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-34226869

RESUMEN

We described antibiotic use among inpatients with coronavirus disease 2019 (COVID-19). Most COVID-19 inpatients received antibiotic therapy. We also described hospital-wide antibiotic use during 2020 compared with 2019, stratified by hospital COVID-19 burden. Although total antibiotic use decreased between years, certain antibiotic use increased with higher COVID-19 burden.

11.
Clin Lymphoma Myeloma Leuk ; 21(2): 132-138, 2021 02.
Artículo en Inglés | MEDLINE | ID: mdl-32950461

RESUMEN

INTRODUCTION: Classical Hodgkin lymphoma (cHL) is a curable malignancy, with a complete remission rate of approximately 90%. However, relapse remains a significant cause of mortality. Prognostic factors are useful in guiding therapy. This is a large, single-institution study defining the clinicopathologic features, prognostic factors, and treatment outcomes of patients with cHL. PATIENTS AND METHODS: We reviewed 727 patients with cHL treated at H. Lee Moffitt Cancer Center and Research Institute from 1990 to 2017. Data on demographics, laboratory studies, and disease statuses were collected from the institutional database and electronic medical records. Statistical analyses, overall survival (OS), progression-free survival (PFS), and multivariate analyses were performed. RESULTS: The median age was 35 years. Fifty-four percent of patients were men; 45.6% had advanced stage disease; 82% were treated with ABVD (doxorubicin hydrochloride [adriamycin], bleomycin sulfate, vincristine, and dacarbazine) as frontline therapy; and 70% achieved complete response. The median PFS after first-line treatment was 16.8 years. The median OS of patients with early stage and advanced stage cHL was 19 and 12.9 years, respectively. Poor prognostic factors for OS included older age, advanced stage disease, presence of B symptoms, and a higher International Prognostic Score. CONCLUSION: Despite high cure rates, cHL accounted for the cause of death in 47% of patients who died during follow-up. Prognostic factors, such as age, stage at diagnosis, International Prognostic Score, and B symptoms, are helpful to guide treatment. Outcomes observed in this study are comparable with those reported in previously published studies.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Enfermedad de Hodgkin/diagnóstico , Recurrencia Local de Neoplasia/epidemiología , Adolescente , Adulto , Factores de Edad , Anciano , Anciano de 80 o más Años , Bleomicina/uso terapéutico , Niño , Dacarbazina/uso terapéutico , Doxorrubicina/uso terapéutico , Femenino , Enfermedad de Hodgkin/mortalidad , Enfermedad de Hodgkin/patología , Enfermedad de Hodgkin/terapia , Humanos , Masculino , Persona de Mediana Edad , Recurrencia Local de Neoplasia/prevención & control , Estadificación de Neoplasias , Pronóstico , Supervivencia sin Progresión , Inducción de Remisión/métodos , Estudios Retrospectivos , Factores de Riesgo , Vinblastina/uso terapéutico , Adulto Joven
12.
Nat Commun ; 12(1): 6850, 2021 11 25.
Artículo en Inglés | MEDLINE | ID: mdl-34824242

RESUMEN

The molecular mechanisms that drive hematopoietic stem cell functional decline under conditions of telomere shortening are not completely understood. In light of recent advances in single-cell technologies, we sought to redefine the transcriptional and epigenetic landscape of mouse and human hematopoietic stem cells under telomere attrition, as induced by pathogenic germline variants in telomerase complex genes. Here, we show that telomere attrition maintains hematopoietic stem cells under persistent metabolic activation and differentiation towards the megakaryocytic lineage through the cell-intrinsic upregulation of the innate immune signaling response, which directly compromises hematopoietic stem cells' self-renewal capabilities and eventually leads to their exhaustion. Mechanistically, we demonstrate that targeting members of the Ifi20x/IFI16 family of cytosolic DNA sensors using the oligodeoxynucleotide A151, which comprises four repeats of the TTAGGG motif of the telomeric DNA, overcomes interferon signaling activation in telomere-dysfunctional hematopoietic stem cells and these cells' skewed differentiation towards the megakaryocytic lineage. This study challenges the historical hypothesis that telomere attrition limits the proliferative potential of hematopoietic stem cells by inducing apoptosis, autophagy, or senescence, and suggests that targeting IFI16 signaling axis might prevent hematopoietic stem cell functional decline in conditions affecting telomere maintenance.


Asunto(s)
Hematopoyesis/fisiología , Acortamiento del Telómero/fisiología , Animales , Trastornos de Fallo de la Médula Ósea/genética , Trastornos de Fallo de la Médula Ósea/metabolismo , Trastornos de Fallo de la Médula Ósea/patología , Autorrenovación de las Células , Reprogramación Celular , Hematopoyesis/genética , Células Madre Hematopoyéticas/citología , Células Madre Hematopoyéticas/metabolismo , Humanos , Interferones/metabolismo , Megacariocitos/citología , Megacariocitos/metabolismo , Ratones , Proteínas Nucleares/metabolismo , Oligodesoxirribonucleótidos/metabolismo , Fosfoproteínas/metabolismo , Transducción de Señal , Análisis de la Célula Individual , Telómero/química , Telómero/fisiología , Acortamiento del Telómero/genética
13.
Infect Control Hosp Epidemiol ; 41(6): 734-736, 2020 06.
Artículo en Inglés | MEDLINE | ID: mdl-32279665

RESUMEN

We compared methicillin-resistant Staphylococcus aureus (MRSA) bloodstream infections (BSIs) captured by culture-based surveillance and MRSA septicemia hospitalizations captured by administrative coding using statewide hospital discharge data in Connecticut from 2010 to 2018. Observed discrepancies between identification methods suggest administrative coding is inappropriate for assessing trends in MRSA BSIs.


Asunto(s)
Bacteriemia , Infección Hospitalaria , Staphylococcus aureus Resistente a Meticilina , Infecciones Estafilocócicas , Bacteriemia/epidemiología , Connecticut/epidemiología , Infección Hospitalaria/epidemiología , Hospitales , Humanos , Alta del Paciente , Infecciones Estafilocócicas/epidemiología , Staphylococcus aureus
14.
Case Rep Nephrol ; 2019: 7913027, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31214367

RESUMEN

Acute lymphoblastic leukemia (ALL) is the second most common acute leukemia in adults. It is an aggressive hematologic neoplasm, with a bimodal age distribution typically presenting in childhood and the 6th decade of life (Terwilliger and Abdul-Hay, 2017). Renal injury in ALL is common and can occur through many different mechanisms, such as prerenal acute kidney injury, acute tubular necrosis, renovascular disease, obstruction, glomerulonephritis, and parenchymal infiltration of tumor cells (Luciano and Brewster, 2014). Infiltration of kidneys by leukemia cells is common; however a resultant injury only occurs in about 1% of patients, and renal failure is even more rare (Luciano and Brewster, 2014). Renal failure due to bilateral infiltration of tumor cells has been reported in only a few cases and is thought to be a poor prognostic indicator (Luciano and Brewster, 2014; Sherief et al., 2015). Biopsy is essential to the diagnosis of renal infiltration of leukemia. We present a case of acute renal failure secondary to bilateral renal infiltration of ALL presenting as the first sign of relapse in a young man.

15.
Mediterr J Hematol Infect Dis ; 10(1): e2018036, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-30002792

RESUMEN

We report five patients with human immunodeficiency virus-1/acquired immunodeficiency syndrome (HIV-1/AIDS) who developed T-cell large granular lymphocytic proliferation (T-LGLP) or leukemia (T-LGLL). None of the patients fulfilled criteria for diagnosis of diffuse infiltrative lymphocyte syndrome (DILS) or HIV-associated CD8+ lymphocytosis syndrome at the time of diagnosis of LGL. The immunophenotype of malignant T-cells was identical in three patients with co-expression of CD3, CD8, CD57, and T-cell receptor (TCR) alpha/beta. Three out of five patients were also diagnosed with clonal disorders of B-cell origin including diffuse large B-cell lymphoma, Burkitt's lymphoma, and monoclonal gammopathy of undetermined significance (MGUS). Two patients developed cytopenias due to T-LGLL prompting initiation of therapy. Our study suggests that chronic viral infection with HIV can contribute to the evolution of T-LGLP. Clinical and laboratory characteristics of T-LGLP associated with HIV-1/AIDS resemble those of immunocompetent patients.

16.
Oncotarget ; 8(27): 44639-44653, 2017 Jul 04.
Artículo en Inglés | MEDLINE | ID: mdl-28591718

RESUMEN

Recent evidence suggests that glutamate signaling plays an important role in cancer. Riluzole is a glutamate release inhibitor and FDA-approved drug for the treatment of amyotrophic lateral sclerosis. It has been investigated as an inhibitor of cancer cell growth and tumorigenesis with the intention of repurposing it for the treatment of cancer. Riluzole is thought to act by indirectly inhibiting glutamate signaling. However, the specific effects of riluzole in breast cancer cells are not well understood. In this study, the anti-cancer effects of riluzole were explored in a panel of breast cancer cell lines in comparison to the metabotropic glutamate receptor 1-specific inhibitor BAY 36-7620. While both drugs inhibited breast cancer cell proliferation, there were distinct functional effects suggesting that riluzole action may be metabotropic glutamate receptor 1-independent. Riluzole induced mitotic arrest independent of oxidative stress while BAY 36-7620 had no measurable effect on mitosis. BAY 36-7620 had a more pronounced and significant effect on DNA damage than riluzole. Riluzole altered cellular metabolism as demonstrated by changes in oxidative phosphorylation and cellular metabolite levels. These results provide a better understanding of the functional action of riluzole in the treatment of breast cancer.


Asunto(s)
Antineoplásicos/farmacología , Receptores de Glutamato Metabotrópico/antagonistas & inhibidores , Riluzol/farmacología , Neoplasias de la Mama/genética , Neoplasias de la Mama/metabolismo , Ciclo Celular/efectos de los fármacos , Ciclo Celular/genética , Línea Celular Tumoral , Proliferación Celular/efectos de los fármacos , Daño del ADN , Relación Dosis-Respuesta a Droga , Metabolismo Energético , Femenino , Puntos de Control de la Fase G2 del Ciclo Celular/efectos de los fármacos , Expresión Génica , Perfilación de la Expresión Génica , Humanos , Mitosis/efectos de los fármacos , Mitosis/genética , Fosforilación Oxidativa/efectos de los fármacos , Receptores de Glutamato Metabotrópico/genética , Receptores de Glutamato Metabotrópico/metabolismo , Transducción de Señal/efectos de los fármacos
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