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1.
Nature ; 605(7911): 653-658, 2022 05.
Artigo em Inglês | MEDLINE | ID: mdl-35364602

RESUMO

Before the Perseverance rover landing, the acoustic environment of Mars was unknown. Models predicted that: (1) atmospheric turbulence changes at centimetre scales or smaller at the point where molecular viscosity converts kinetic energy into heat1, (2) the speed of sound varies at the surface with frequency2,3 and (3) high-frequency waves are strongly attenuated with distance in CO2 (refs. 2-4). However, theoretical models were uncertain because of a lack of experimental data at low pressure and the difficulty to characterize turbulence or attenuation in a closed environment. Here, using Perseverance microphone recordings, we present the first characterization of the acoustic environment on Mars and pressure fluctuations in the audible range and beyond, from 20 Hz to 50 kHz. We find that atmospheric sounds extend measurements of pressure variations down to 1,000 times smaller scales than ever observed before, showing a dissipative regime extending over five orders of magnitude in energy. Using point sources of sound (Ingenuity rotorcraft, laser-induced sparks), we highlight two distinct values for the speed of sound that are about 10 m s-1 apart below and above 240 Hz, a unique characteristic of low-pressure CO2-dominated atmosphere. We also provide the acoustic attenuation with distance above 2 kHz, allowing us to explain the large contribution of the CO2 vibrational relaxation in the audible range. These results establish a ground truth for the modelling of acoustic processes, which is critical for studies in atmospheres such as those of Mars and Venus.

2.
Haematologica ; 109(7): 2186-2195, 2024 07 01.
Artigo em Inglês | MEDLINE | ID: mdl-38235513

RESUMO

Chimeric antigen receptor T-cell therapy is the new standard of care in fit patients with refractory or early relapsed diffuse large B-cell lymphoma (DLBCL). However, there may still be a role for salvage chemotherapy (ST) and autologous stem cell transplant (ASCT) in certain circumstances (e.g., lack of resources for chimeric antigen receptor T-cell therapy, chemosensitive relapses). We retrospectively studied 230 patients with refractory or early relapsed DLBCL who underwent ST and ASCT. The median line of ST was one (range, 1-3). Best response before ASCT was complete response in 106 (46%) and partial response in 124 (54%) patients. The median follow-up after ASCT was 89.4 months. The median progression-free (PFS) and overall survival (OS) were 16.1 and 43.3 months, respectively. Patients relapsing between 6 to 12 months after frontline therapy had a numerically better median PFS (29.6 months) and OS (88.5 months). Patients who required one line of ST, compared to those requiring more than one line, had a better median PFS (37.9 vs. 3.9 months; P=0.0005) and OS (68.3 vs. 12.0 months; P=0.0005). Patients who achieved complete response had a better median PFS (71.1 vs. 6.3 months; P<0.0001) and OS (110.3 vs. 18.9 months; P<0.0001) than those in partial response. Patients who achieved complete response after one line of ST had the most favorable median PFS (88.5 months) and OS (117.2 months). Post-ASCT survival outcomes of patients with refractory or early relapsed DLBCL appeared reasonable and were particularly favorable in those who required only one line of ST to achieve complete response before ASCT, highlighting the role of this procedure in select patients with chemosensitive disease.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica , Transplante de Células-Tronco Hematopoéticas , Linfoma Difuso de Grandes Células B , Terapia de Salvação , Transplante Autólogo , Humanos , Linfoma Difuso de Grandes Células B/terapia , Linfoma Difuso de Grandes Células B/mortalidade , Terapia de Salvação/métodos , Masculino , Feminino , Pessoa de Meia-Idade , Adulto , Idoso , Transplante de Células-Tronco Hematopoéticas/métodos , Estudos Retrospectivos , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Resultado do Tratamento , Resistencia a Medicamentos Antineoplásicos , Recidiva , Adulto Jovem , Terapia Combinada
3.
Am J Hematol ; 99(9): 1712-1720, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-38837403

RESUMO

Chimeric antigen receptor T-cell (CAR-T) therapy, despite being a potentially curative therapy in relapsed or refractory (RR) large B-cell lymphoma (LBCL), remains underutilized in older patients due to limited clinical data. We therefore studied the safety and efficacy of CAR-T therapy in older patients with RR LBCL in the real-world setting. Patients aged ≥65 years with RR LBCL, treated with anti-CD19 CAR-T therapy at 7 US institutions were included in this multicenter, retrospective, observational study. In total, 226 patients were included. Median age at infusion was 71 years (range 65-89). Best objective and complete response rates were 86% and 62%, respectively. Median follow-up after infusion was 18.3 months. The median progression-free survival (PFS) was 6.9 months, with 6- and 12-month PFS estimates of 54% and 44%, respectively. The nonrelapse mortality (NRM) rate was 10.9% at day 180, primarily due to infections, and not impacted by the age groups. Grade ≥3 cytokine release syndrome and neurotoxicity occurred in 7% and 26%, respectively. In univariate analysis, no significant difference in PFS was seen regardless of the age groups or CAR-T type, whereas ECOG PS ≥2, elevated LDH, bulky disease, advanced stage, extranodal involvement, the need for bridging therapy, and prior bendamustine exposure were associated with shorter PFS. These findings support the use of CAR-T in older patients, including those aged ≥80 years. The age at CAR-T therapy did not influence safety, survival, and NRM outcomes. Older patients should not be excluded from receiving CAR-T therapy solely based on their chronological age.


Assuntos
Antígenos CD19 , Imunoterapia Adotiva , Linfoma Difuso de Grandes Células B , Humanos , Idoso , Idoso de 80 Anos ou mais , Masculino , Feminino , Linfoma Difuso de Grandes Células B/terapia , Linfoma Difuso de Grandes Células B/mortalidade , Antígenos CD19/uso terapêutico , Antígenos CD19/imunologia , Imunoterapia Adotiva/efeitos adversos , Estudos Retrospectivos , Receptores de Antígenos Quiméricos/uso terapêutico
4.
AIDS Care ; 36(10): 1499-1507, 2024 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-38749021

RESUMO

With highly active antiretroviral therapy, HIV infection has become a treatable chronic disease. However, modifiable risk factors such as cigarette smoking continue to impact the morbidity and mortality of people with HIV (PWH). We assessed the prevalence and factors associated with cigarette smoking and motivation to quit among PWH in Western Jamaica. A cross-sectional study was conducted in which 392 adults seeking HIV care at health facilities in Western Jamaica completed an interviewer-administered questionnaire. Current smoking prevalence among participants was 17.4%. Current smoking was significantly associated with being male (OR = 2.99), non-Christian/non-Rastafarian (OR = 2.34), living or working with another smoker (aOR =1.86), being moderate to severely depressed (OR = 3.24), having an alcohol drinking problem (OR = 1.84), and never being asked by a healthcare provider if they smoked (OR = 3.24). Among the PWH who currently smoke, 36.7% are moderately to highly dependent on nicotine. One-third of people who smoke (33.8%) started smoking for the first time after HIV diagnosis, while 66.2% initiated smoking before; 88% were willing to quit smoking. These findings provide baseline information for designing and implementing a comprehensive smoking cessation program that considers the needs of PWH in Jamaica, with the potential of becoming a replicable model for other HIV-specialized healthcare settings in the Caribbean.


Assuntos
Fumar Cigarros , Infecções por HIV , Humanos , Jamaica/epidemiologia , Masculino , Feminino , Estudos Transversais , Adulto , Infecções por HIV/epidemiologia , Infecções por HIV/psicologia , Prevalência , Fumar Cigarros/epidemiologia , Fumar Cigarros/psicologia , Fatores de Risco , Pessoa de Meia-Idade , Inquéritos e Questionários , Abandono do Hábito de Fumar/psicologia , Abandono do Hábito de Fumar/estatística & dados numéricos , Motivação , Adulto Jovem , Fumar/epidemiologia , Fumar/psicologia
6.
Eat Weight Disord ; 26(2): 425-438, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-32232777

RESUMO

BACKGROUND: Impulsivity has been shown to be associated with obesity through links to pathological eating behavior such as binge eating. The recent literature suggests that impulsivity is linked to poorer outcomes post-bariatric surgery. Impulsivity can be measured in various ways and comprises of three broad domains: impulsive choice, impulsive action, and impulsive personality traits. The aim of this systematic review is to synthesize the current evidence on the impact of impulsivity on post-bariatric surgery weight loss. METHODS: A literature review was performed in February 2020. Original studies investigating the relationship between impulsivity and weight loss post-bariatric surgery were evaluated. RESULTS: Ten studies with a total of 1246 patients were analyzed. There were four case-control, four prospective observational and two retrospective observational studies. The postoperative follow-up ranged from 0.5 to 12 years. Eight studies measuring trait impulsivity did not show any association with weight loss post-bariatric surgery, although two studies reported an indirect effect of impulsivity on weight loss mediated via pathological eating behavior. Assessment of impulsive action by two studies showed that post-bariatric surgery weight loss is affected by impulsive action. CONCLUSION: Impulsivity may adversely affect postoperative outcomes after bariatric surgery. However, this may be specific to state impulsivity or impulsive action rather than trait impulsivity. Patients with a higher state impulsivity may benefit from closer follow-up post-bariatric surgery, as well as cognitive behavioral therapies targeting cognitive control over food. LEVEL OF EVIDENCE: Level I, systematic review.


Assuntos
Cirurgia Bariátrica , Redução de Peso , Humanos , Comportamento Impulsivo , Obesidade , Estudos Observacionais como Assunto , Estudos Retrospectivos
7.
Proc Biol Sci ; 287(1938): 20202129, 2020 11 11.
Artigo em Inglês | MEDLINE | ID: mdl-33171091

RESUMO

Since their discovery in 1927, the phylogenetic status of the Myanmar amphipithecines has been highly debated. These fossil primates are recognized either as anthropoids or as adapiform strepsirrhines. This uncertainty was largely the consequence of a limited fossil record consisting mostly of jaw fragments but lacking the critical cranial elements that might resolve this debate. We report here cranial remains associated with an ulna from a single individual pertaining to the amphipithecine Ganlea megacanina. In addition to anthropoid-like dentognathic characters, Ganlea displays several ulna and skull features that testify to its anthropoid affinities (e.g. short subvertically oriented lacrimal duct, lacrimal foramen and bone inside the orbit, maxillary contribution to the lower orbital rim, fused metopic suture). By contrast to crown anthropoids, however, Ganlea lacks postorbital closure, confirming that postorbital closure appeared later than many anthropoid dentognathic characters and evolved convergently in extant tarsiers and anthropoids. Thus, amphipithecines must now be recognized as stem anthropoids offering a unique window on the early evolution of cranial and skeletal features in anthropoids, and reinforcing the hypothesis of an origin and early diversification of anthropoids in Asia.


Assuntos
Evolução Biológica , Haplorrinos , Animais , Ásia , Fósseis , Mianmar , Órbita , Filogenia , Primatas , Crânio
8.
J Dairy Sci ; 103(6): 5634-5640, 2020 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-32307166

RESUMO

This study was designed to examine the effect of yeast cell wall (YCW) supplementation on peripheral leukocyte populations and mRNA expression of cytokines in lactating dairy cows. Fourteen Holstein lactating cows were assigned to 1 of 2 treatments; the control group (n = 7) were fed a total mixed ration without supplementation and cows in the YCW group (n = 7) were fed a total mixed ration supplemented with YCW (SafMannan; Phileo, Lesaffre Animal Care, Lille, France; 10 g/cow per day). Blood samples were collected 3 times during the experimental period [wk 0 (before any treatment), wk 4, and wk 8]. Peripheral leukocyte populations and cytokine mRNA expression of peripheral blood monocular cells were measured using flow cytometry and real-time PCR, respectively. Among the peripheral leukocyte populations, TcR1-N12 + and CD14+ T cells increased at wk 4, and CD4+ T cells and CD8+ T cells increased at wk 4 and wk 8 with YCW supplementation. The mRNA level of IL8 tended to be increased in the YCW group at wk 4. Expression of IL12A was lower in the YCW group than in the control group before the experiment (wk 0) but no differences were observed at later time points (wk 4 and wk 8). Expression of IL12A decreased in the control group and increased in the YCW group. Expression of CCR2 increased at wk 4, and CCL2 and CCL3 were increased at wk 8 in the YCW group. Thus, YCW supplementation increased the mRNA expression of cytokines in peripheral blood mononuclear cells of lactating dairy cows.


Assuntos
Ração Animal/análise , Citocinas/metabolismo , Dieta/veterinária , Saccharomyces cerevisiae , Fermento Seco , Fenômenos Fisiológicos da Nutrição Animal , Animais , Linfócitos T CD8-Positivos , Bovinos , Parede Celular , Citocinas/genética , Feminino , Regulação da Expressão Gênica/efeitos dos fármacos , Lactação/efeitos dos fármacos , Leucócitos Mononucleares , Leite/metabolismo , RNA Mensageiro/metabolismo
9.
Ann Hematol ; 97(9): 1527-1534, 2018 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-29959467

RESUMO

Copper is a crucial micronutrient needed by animals and humans for proper organ function and metabolic processes such as hemoglobin synthesis, as a neurotransmitter, for iron oxidation, cellular respiration, and antioxidant defense peptide amidation, and in the formation of pigments and connective tissue. Multiple factors, either hereditary or acquired, contribute to the increase in copper deficiency seen clinically over the past decades. The uptake of dietary copper into intestinal cells is via the Ctr1 transporter, located at the apical membrane aspect of intestinal cells and in most tissues. Copper is excreted from enterocytes into the blood via the Cu-ATPase, ATP7A, by trafficking the transporter towards the basolateral membrane. Zinc is another important micronutrient in animals and humans. Although zinc absorption may occur by direct interaction with the Ctr1 transporter, its absorption is slightly different. Copper deficiency affects physiologic systems such as bone marrow hematopoiesis, optic nerve function, and the nervous system in general. Detailed pathophysiology and its related diseases are explained in this manuscript. Diagnosis is made by measuring serum copper, serum ceruloplasmin, and 24-h urine copper levels. Copper deficiency anemia is treated with oral or intravenous copper replacement in the form of copper gluconate, copper sulfate, or copper chloride. Hematological manifestations are fully reversible with copper supplementation over a 4- to 12-week period. However, neurological manifestations are only partially reversible with copper supplementation.


Assuntos
Anemia/etiologia , Cobre/deficiência , Distúrbios Nutricionais/complicações , Adenosina Trifosfatases/metabolismo , Anemia/diagnóstico , Animais , Transporte Biológico , Doença Celíaca/complicações , Doença Celíaca/diagnóstico , Doença Celíaca/metabolismo , Cobre/metabolismo , Cobre/urina , Derivação Gástrica/efeitos adversos , Humanos , Distúrbios Nutricionais/diagnóstico , Terapia Nutricional/efeitos adversos , Terapia Nutricional/métodos , Zinco/sangue
10.
Int J Dent Hyg ; 16(2): e96-e102, 2018 May.
Artigo em Inglês | MEDLINE | ID: mdl-29120096

RESUMO

OBJECTIVES: This study aimed to assess the oral health and the prevalence of pre-existing oral colonization with respiratory pathogens in dependent elderly, and whether these factors influence pneumonia development. MATERIALS AND METHODS: Participants residing in a long-term care facility received bedside oral examinations, and information on their oral health (caries status, calculus index and debris index) was obtained. Samples from the tongue and teeth were collected at baseline and at time of pneumonia development. Sputum was collected at the time of pneumonia diagnosis. Samples were assessed for Haemophilus influenzae, Klebsiella pneumoniae, Pseudomonas aeruginosa, Staphylococcus aureus and Streptococcus pneumoniae by polymerase chain reaction. RESULTS: This was a 1-year longitudinal study of 60 dependent elderly (mean age: 64.2 ± 14.1 years). Seventeen patients (28.3%) developed pneumonia. The mean Decayed, Missing and Filled Teeth and Simplified Oral Hygiene Index were 22.8 ± 9.2 and 4.0 ± 1.0, respectively. At baseline, 48.3% were orally colonized with ≥1 respiratory pathogens. The presence of H. influenzae (P = .002) and P. aeruginosa (P = .049) in the sputum was significantly associated with their colonization on the tongue at baseline. In the bivariate analyses, pneumonia development was associated with naso-gastric feeding tube (P = .0001), H. influenzae (P = .015) and P. aeruginosa (P = .003) tongue colonization at baseline and calculus index (P = .002). Multivariate analyses revealed that calculus index (P = .09) and the presence of tracheostomy (P = .037) were associated with pneumonia. CONCLUSIONS: The calculus amount and tongue colonization with respiratory pathogens are risk factors for pneumonia development. Oral hygiene measures to remove tongue biofilm and calculus may reduce pneumonia development.


Assuntos
Placa Dentária/microbiologia , Nível de Saúde , Casas de Saúde , Saúde Bucal , Pneumonia Bacteriana/microbiologia , Escarro/microbiologia , Língua/microbiologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Biofilmes , Índice CPO , Feminino , Humanos , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Índice de Higiene Oral , Reação em Cadeia da Polimerase , Estudos Prospectivos , Fatores de Risco , Singapura
11.
J Sleep Res ; 24(3): 339-45, 2015 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-25533591

RESUMO

Dyslipidaemia and increased oxidative stress have been reported in severe obstructive sleep apnea, and both may be related to the development of cardiovascular disease. We have previously shown in a randomized crossover study in patients with moderate to severe obstructive sleep apnea that therapeutic continuous positive airway pressure treatment for 8 weeks improved postprandial triglycerides and total cholesterol when compared with sham continuous positive airway pressure. From this study we have now compared the effect of 8 weeks of therapeutic continuous positive airway pressure and sham continuous positive airway pressure on oxidative lipid damage and plasma lipophilic antioxidant levels. Unesterified cholesterol, esterified unsaturated fatty acids (cholesteryl linoleate: C18:2; and cholesteryl arachidonate: C20:4; the major unsaturated and oxidizable lipids in low-density lipoproteins), their corresponding oxidized products [cholesteryl ester-derived lipid hydroperoxides and hydroxides (CE-O(O)H)] and antioxidant vitamin E were assessed at 20:30 hours before sleep, and at 06:00 and 08:30 hours after sleep. Amongst the 29 patients completing the study, three had incomplete or missing [CE-O(O)H] data. The mean apnea -hypopnoea index, age and body mass index were 38 per hour, 49 years and 32 kg m(-2) , respectively. No differences in lipid-based oxidative markers or lipophilic antioxidant levels were observed between the continuous positive airway pressure and sham continuous positive airway pressure arms at any of the three time-points [unesterified cholesterol 0.01 mm, P > 0.05; cholesteryl linoleate: C18:2 0.05 mm, P > 0.05; cholesteryl arachidonate: C20:4 0.02 mm, P = 0.05; CE-O(O)H 2.5 nm, P > 0.05; and lipid-soluble antioxidant vitamin E 0.03 µm, P > 0.05]. In this study, accumulating CE-O(O)H, a marker of lipid oxidation, does not appear to play a role in oxidative stress in obstructive sleep apnea.


Assuntos
Antioxidantes/análise , Pressão Positiva Contínua nas Vias Aéreas , Lipídeos/sangue , Estresse Oxidativo , Apneia Obstrutiva do Sono/sangue , Apneia Obstrutiva do Sono/terapia , Biomarcadores/sangue , Índice de Massa Corporal , Feminino , Humanos , Lipídeos/química , Masculino , Pessoa de Meia-Idade , Sono/fisiologia , Apneia Obstrutiva do Sono/metabolismo , Apneia Obstrutiva do Sono/fisiopatologia , Fatores de Tempo , Vitamina E/sangue
12.
West Indian Med J ; 65(1): 67-77, 2015 May 06.
Artigo em Inglês | MEDLINE | ID: mdl-26645593

RESUMO

BACKGROUND: African-Caribbean men, particularly Jamaican men, have one of the highest incidences of prostate cancer in the world. This cross-sectional study was conducted to investigate knowledge, attitudes, practices and factors associated with prostate cancer screening among men in western Jamaica. METHODS: A questionnaire was administered to men 40-93 years old during May to August 2007. The outcome variable of interest was previous prostate cancer screening. RESULTS: Approximately 35% of men were previously screened for prostate cancer. Men > 70 years were 93% less likely to be screened compared to men 40-49 years (95% CI: 0.01, 0.56). Men living in the parish of Trelawny were 10.5 times more likely not to be screened compared to men in St James (95% CI: 2.33, 47.17) and manual labourers were 5.5 times less likely to have been screened than non-manual labourers (95% CI: 0.97, 31.68). Men who had not been advised to have prostate cancer screening were 92% less likely to be screened than those advised (95% CI: 0.02, 0.29), and men who were not sure of how frequently screening should be conducted were 6.1 times more likely not to be screened compared to those who knew that screening should be conducted annually (95% CI: 1.10, 33.35). Men who visit healthcare providers only when they feel sick were 6.4 times more likely not to be screened compared to men who visit annually (95% CI: 1.63, 25.41). CONCLUSION: A substantial proportion of Jamaican men ≥ 40 years had never been screened for prostate cancer. Interventions should be instituted to make prostate cancer screening readily available and to promote active participation of men in these programmes especially men ≥ 70 years, men with less economic resources, and men who do not routinely visit a physician or health facility.

13.
West Indian Med J ; 65(1): 60-66, 2015 May 08.
Artigo em Inglês | MEDLINE | ID: mdl-26645592

RESUMO

OBJECTIVES: To investigate the epidemiology of prostate cancer (PCa) in western Jamaica and describe the health-seeking behaviour of at-risk men. METHODS: This study contained both quantitative and qualitative components. The quantitative portion consisted of a retrospective, matched case-control study of two hundred and four men attending outpatient clinics who completed an interviewer-administered questionnaire. The qualitative component consisted of two focus group discussions designed to further investigate health-seeking behaviour and preferred educational channels regarding PCa. RESULTS: Four risk factors were identified: family history of PCa (OR 3.39, 95% CI 1.73, 6.66), age (OR 1.97, 95% CI 1.41, 2.74), any sexually transmitted disease (STD) history (OR 2.02, 95% CI 1.07, 3.83) and alcohol consumption (OR 1.86, 95% CI 1.00, 3.47). Knowledge of primary risk factors was low, especially for race (37%). Although 81% of controls knew tests were available, a stigma was associated with testing. The screening rate was higher than previously reported but still low (56% of controls), and PCa in the western region is discovered by symptoms 61% of the time. Focus group participants blamed a "male mentality" that is antagonistic to routine medical care and preventive testing. CONCLUSIONS: Family history, age, STDs and alcohol consumption were identified as risk factors for PCa in western Jamaica. Sexually transmitted disease history and alcohol consumption are interesting results that merit further investigation. Prostate cancer continues to be diagnosed primarily by symptoms, indicating that routine testing is not widespread enough to catch the disease in its early stages when treatment is most effective. A negative image of prostate screenings persists, and targeted educational interventions are needed to improve outcomes.

14.
Transplant Cell Ther ; 2024 Jul 10.
Artigo em Inglês | MEDLINE | ID: mdl-38996973

RESUMO

The standard of care (SOC) for fit patients with relapsed diffuse large B-cell lymphoma (DLBCL) ≥12 months after completing frontline therapy is salvage chemotherapy (ST) followed by autologous stem cell transplant (ASCT). However, this strategy may not be optimal for patients with certain clinical characteristics. We retrospectively studied 151 patients with DLBCL that relapsed ≥12 months after R-CHOP or R-CHOP-like frontline therapy who underwent ST and ASCT at Mayo Clinic between July 2000 and December 2017 or the University of Iowa between April 2003 and April 2020. Clinical characteristics, treatment information, and outcome data were abstracted. Progression-free survival (PFS) and overall survival (OS) from the time of ASCT were analyzed using the Kaplan-Meier method. The median time from frontline therapy completion to 1st relapse was 26.9 months. The median line of ST was 1 (range 1-3), and 17 (11%) patients required >1 line of ST. Best response before ASCT was partial response (PR) in 60 (40%) and complete response (CR) in 91 (60%) patients. The median age at ASCT was 64 yr (range 19-78), and 36 (24%) patients were of ≥70 yr. The median follow-up after ASCT was 87.3 months. The median PFS and OS were 54.5 and 88.9 months, respectively. There was no significant difference in PFS and OS based on the age at ASCT (including patients aged ≥70-78 yr), sex, transplant era, time to relapse, LDH, extranodal site involvement, and central nervous system/nerve involvement at relapse. However, patients with advanced-stage relapse had inferior PFS than those with early-stage relapse (median 45.3 versus 124.7 months, P = .045). Patients who required > 1 line of ST, compared to those requiring 1 line, had significantly inferior PFS (median 6.1 versus 61.4 months, P < .0001) and OS (17.8 versus 111.7 months, P = .0004). There was no statistically significant difference in survival in patients who achieved PR versus CR, though numerically inferior in the former, with median PFS of 38.9 versus 59.3 months (P = .23) and median OS of 78.3 versus 111.7 months (P = .62). Patients achieving CR after 1 line of ST had excellent post-ASCT outcomes, with median PFS of 63.7 months. In conclusion, survival after ASCT was unfavorable in patients with late relapsed DLBCL (≥12 months) who required more than 1 line of ST to achieve PR or CR, and such patients should be treated with alternative therapies. Conversely, survival was favorable in patients who required only 1 line of ST, supporting the current clinical practice of ASCT consolidation in these patients. Moreover, outcomes were favorable in patients aged ≥70 to 78 yr at ASCT, similar to younger patients, highlighting the safety and feasibility of this approach in such patients.

15.
West Indian Med J ; 62(6): 533-42, 2013 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-24756741

RESUMO

OBJECTIVES: There is a paucity of studies on psychosocial disorders in clinic populations in Jamaica. Therefore, we sought to determine the prevalence and correlates of symptoms of depression and anxiety in a clinic population in western Jamaica. METHODS: A total of 338 participants from four outpatient clinics of : A total of 338 participants from four outpatient clinics of the Western Regional Health Authority (WRHA) were screened for symptoms of depression and anxiety using questions from the Beck Depression Inventory-II and the Beck Anxiety Inventory. The Chi-square test was used to examine differences in symptoms of anxiety and depression by gender. Multivariate linear and logistic regression were used to examine the associations between symptoms and sociodemographic variables with significance set at p<0.05. RESULTS: Approximately 30% of participants had moderate or severe depression symptoms while 18.6% had moderate or severe anxiety symptoms. Participants aged 30-39 years were more likely than older participants to have moderate or severe anxiety symptoms (odds ratio [OR]: 2.0, 95% confidence interval [CI]: 1.39, 5.56). Women reported a statistically significant higher prevalence of anxiety symptoms (10.0% vs 7.1%, p = 0.003). There was also a statistically significant difference between anxiety means by gender. Furthermore, income was found to be a significant predictor of anxiety for women only (p = 0.0113). Married persons were more likely than those who had never married to have moderate or severe anxiety symptoms (OR: 2.57, 95% CI: 1.14, 5.76). CONCLUSIONS: Our findings suggest that the prevalence of depression may be higher than global estimates in similar outpatient settings. Screening and intervention efforts may need to focus on younger persons, women, and married persons.


Assuntos
Ansiedade/epidemiologia , Depressão/epidemiologia , Adulto , Estudos Transversais , Feminino , Humanos , Jamaica/epidemiologia , Modelos Logísticos , Pessoa de Meia-Idade , Prevalência
16.
Cureus ; 15(12): e50536, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38222137

RESUMO

Mantle cell lymphoma (MCL) most commonly presents as lymphadenopathy (LAD), fevers, night sweats, weight loss, splenomegaly, and blood count abnormalities. While extranodal involvement as an initial presentation can occur, it is uncommon. At initial diagnosis, MCL most commonly presents as widespread, advanced stage III or IV lymphoma. Given advanced stage MCL at presentation, it is important for medical practitioners to recognize unusual extranodal presentations of MCL for earlier diagnosis and treatment planning. Here, we present a case of MCL initially presenting as cholecystitis and bilateral nephromegaly in a 53-year-old male patient.

17.
JACC Case Rep ; 15: 101840, 2023 Jun 07.
Artigo em Inglês | MEDLINE | ID: mdl-37283829

RESUMO

Chimeric antigen receptor T-cell (CAR-T) therapy has revolutionized the management of aggressive hematologic malignancies. However, its role in patients with lymphoma and cardiac metastasis or cardiomyopathy remains undefined due to potentially life-threatening complications such as ventricular rupture, cardiac tamponade, and circulatory failure. We present a case series of patients with lymphoma and cardiomyopathy or cardiac metastasis managed with chimeric antigen receptor T-cell therapy. (Level of Difficulty: Advanced.).

18.
Hemasphere ; 7(4): e869, 2023 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-37034004

RESUMO

Immune checkpoint inhibitors (ICIs) and brentuximab vedotin (BV) are novel agents for classic Hodgkin lymphoma, including relapse after autologous stem cell transplant (ASCT). However, their impact on survival post-ASCT relapse, in comparison with conventional therapy, is less known due to the lack of randomized controlled trials. Clinical characteristics and outcomes of 115 patients with relapse (or progression) after ASCT are studied. After a median follow-up of 8.59 years from post-ASCT relapse, the median progression-free survival (PFS) and overall survival (OS) were 0.91 and 5.07 years, respectively. Median lines of therapy after post-ASCT relapse was 2 (range, 1-12). The median PFS was not reached (NR) versus 1.11 versus 0.50 versus 0.85 versus 0.78 years (P = 0.006) and OS was NR versus 7.60 versus 3.08 versus 3.51 versus 3.17 years (P = 0.28) in patients first treated with ICIs versus BV versus investigational agents versus chemotherapy versus radiation therapy (RT). First-line treatment with novel agents (ie, ICIs and BV) was associated with superior outcomes compared with investigational agents and chemotherapy/RT with a median PFS of 1.65 versus 0.50 versus 0.79 years (P = 0.003) and a median OS of 7.60 versus 3.08 versus 3.32 years (P = 0.08). Regardless of lines of therapy, the treatment with ICIs had the most favorable outcome with a median PFS and OS of 3.98 and NR years, respectively. Allogeneic stem cell transplant (allo-SCT) was done in 23 patients (20%), and the median post-allo-SCT PFS and OS were 1.31 and 2.35 years, respectively. In conclusion, survival following post-ASCT relapse improves significantly when patients receive novel agents.

19.
West Indian Med J ; 61(6): 580-6, 2012 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-23441351

RESUMO

OBJECTIVE: To evaluate the impact of a theory-based health education intervention on awareness of prostate cancer and intention to screen among men in Western Jamaica. METHODS: One hundred and eighty-eight men attending outpatient clinics in a hospital in Western Jamaica completed an interviewer-administered pretest survey. Following the pretest, participants received a health education intervention related to prostate cancer and an immediate post-test survey RESULTS: There were statistically significant increases in the percentage of correct responses between the pretest and post-test (p < 0.05). The greatest improvement was among items measuring knowledge of prostate cancer screening tests. Participants moved across the Stages of Change theoretical constructs indicating intention to screen. CONCLUSION: The sample was receptive to information about prostate cancer and the use of a theory-based educational intervention positively influenced knowledge of prostate cancer risk factors, symptoms, and types of screenings. PRACTICE IMPLICATIONS: This theory-based patient education programme can be replicated to promote awareness of prostate cancer and informed screening methods including potential risk associated with screening behaviours.


Assuntos
Educação em Saúde , Conhecimentos, Atitudes e Prática em Saúde , Neoplasias da Próstata/psicologia , Adulto , Idoso , Detecção Precoce de Câncer , Humanos , Jamaica , Masculino , Pessoa de Meia-Idade , Modelos Teóricos , Avaliação de Programas e Projetos de Saúde , Neoplasias da Próstata/diagnóstico
20.
Transplant Cell Ther ; 28(9): 610-617, 2022 09.
Artigo em Inglês | MEDLINE | ID: mdl-35752441

RESUMO

Patients with newly diagnosed diffuse large B-cell lymphoma (DLBCL) who achieve progression-free survival (PFS) at 24 months (PFS24) after immunochemotherapy (IC) have excellent overall survival (OS) comparable to that of the age- and sex-matched general population. However, a similar landmark has not been established for patients with relapsed or refractory (RR) DLBCL following frontline IC who are subsequently treated with salvage therapy followed by autologous stem cell transplantation (ASCT). To evaluate the role of PFS24 as a landmark after ASCT in patients with RR DLBCL, we identified patients with RR DLBCL after frontline R-CHOP or R-CHOP-like IC who underwent salvage therapy and ASCT at Mayo Clinic between July 2000 and December 2017 and University of Iowa between April 2003 and April 2020 from institutional lymphoma and transplantation databases. Clinical characteristics, treatment information, and outcome data were abstracted. PFS, OS, and post-ASCT relapse survival (PRS) were analyzed using Kaplan-Meier method, and cumulative incidences of relapse versus nonrelapse mortality and different causes of death were compared accounting for competing events. A total of 437 patients were identified. Median age at ASCT was 61 years (range 19-78), and 280 (64%) were male. After a median post-ASCT follow-up of 8.0 years (95% confidence interval [CI], 7.2-8.7), 215 patients had a relapse (or disease progression), 180 within 2 years and 35 after 2 years. For the entire cohort, the post-ASCT relapse rate was much higher than the nonrelapse mortality rate (48.1% versus 9.1% at 5 years). Median PFS and OS after ASCT was 2.7 and 5.4 years, respectively. Lymphoma was the primary cause of death after ASCT. In contrast, for patients who had achieved PFS24 (n = 220), rates of post-PFS24 relapse and nonrelapse mortality were similar (14.8% and 12.3% at 5 years). Median PFS and OS after achieving PFS24 was 10.0 and 11.5 years, respectively. Lymphoma-related and -unrelated death rates were similar after achieving PFS24. For all patients who had a post-ASCT relapse, median PRS was 0.7 (95% CI, 0.5-0.9) year, and late relapse (>2 versus ≤2 years after ASCT) was associated with better PRS (median 2.3 [1.7-4.8] versus 0.5 [0.3-0.7] years, P< .001). The study establishes PFS24 as an important landmark associated with post-ASCT outcomes in patients with RR DLBCL after frontline IC.


Assuntos
Transplante de Células-Tronco Hematopoéticas , Linfoma Difuso de Grandes Células B , Linfoma não Hodgkin , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia , Intervalo Livre de Progressão , Transplante Autólogo , Adulto Jovem
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