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1.
Blood ; 143(2): 118-123, 2024 Jan 11.
Artículo en Inglés | MEDLINE | ID: mdl-37647647

RESUMEN

ABSTRACT: CD19-negative relapse is a leading cause of treatment failure after chimeric antigen receptor (CAR) T-cell therapy for acute lymphoblastic leukemia. We investigated a CAR T-cell product targeting CD19 and CD22 generated by lentiviral cotransduction with vectors encoding our previously described fast-off rate CD19 CAR (AUTO1) combined with a novel CD22 CAR capable of effective signaling at low antigen density. Twelve patients with advanced B-cell acute lymphoblastic leukemia were treated (CARPALL [Immunotherapy with CD19/22 CAR Redirected T Cells for High Risk/Relapsed Paediatric CD19+ and/or CD22+ Acute Lymphoblastic Leukaemia] study, NCT02443831), a third of whom had failed prior licensed CAR therapy. Toxicity was similar to that of AUTO1 alone, with no cases of severe cytokine release syndrome. Of 12 patients, 10 (83%) achieved a measurable residual disease (MRD)-negative complete remission at 2 months after infusion. Of 10 responding patients, 5 had emergence of MRD (n = 2) or relapse (n = 3) with CD19- and CD22-expressing disease associated with loss of CAR T-cell persistence. With a median follow-up of 8.7 months, there were no cases of relapse due to antigen-negative escape. Overall survival was 75% (95% confidence interval [CI], 41%-91%) at 6 and 12 months. The 6- and 12-month event-free survival rates were 75% (95% CI, 41%-91%) and 60% (95% CI, 23%-84%), respectively. These data suggest dual targeting with cotransduction may prevent antigen-negative relapse after CAR T-cell therapy.


Asunto(s)
Leucemia-Linfoma Linfoblástico de Células Precursoras , Receptores Quiméricos de Antígenos , Humanos , Niño , Inmunoterapia Adoptiva , Receptores Quiméricos de Antígenos/genética , Recurrencia , Antígenos CD19 , Linfocitos T , Lectina 2 Similar a Ig de Unión al Ácido Siálico
2.
Crit Rev Toxicol ; 54(6): 345-358, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38860720

RESUMEN

During the COVID-19 pandemic, several drugs were repositioned and combined to quickly find a way to mitigate the effects of the infection. However, the adverse effects of these combinations on the gastrointestinal tract are unknown. We aimed investigate whether Hydroxychloroquine (HD), Azithromycin (AZ), and Ivermectin (IV) used in combination for the treatment of COVID-19, can lead to the development of gastrointestinal disorders. This is a systematic review and network meta-analysis conducted using Stata and Revman software, respectively. The protocol was registered with PROSPERO (CRD42023372802). A search of clinical trials in Cochrane Library databases, Embase, Web of Science, Lilacs, PubMed, Scopus and Clinicaltrials.gov conducted on November 26, 2023. The eligibility of the studies was assessed based on PICO criteria, including trials that compared different treatments and control group. The analysis of the quality of the evidence was carried out according to the GRADE. Six trials involving 1,686 COVID-19 patients were included. No trials on the association of HD or AZ with IV met the inclusion criteria, only studies on the association between HD and AZ were included. Nausea, vomiting, diarrhea, abdominal pain and increased transaminases were related. The symptoms of vomiting and nausea were evaluated through a network meta-analysis, while the symptom of abdominal pain was evaluated through a meta-analysis. No significant associations with these symptoms were observed for HD, AZ, or their combination, compared to control. Low heterogeneity and absence of inconsistency in indirect and direct comparisons were noted. Limitations included small sample sizes, varied drug dosages, and potential publication bias during the pandemic peak. This review unveils that there are no associations between gastrointestinal adverse effects and the combined treatment of HD with AZ in the management of COVID-19, as compared to either the use of a control group or the administration of the drugs individually, on the other hand, highlighting the very low or low certainty of evidence for the evaluated outcomes. To accurately conclude the absence of side effects, further high-quality randomized studies are needed.


Asunto(s)
Azitromicina , Tratamiento Farmacológico de COVID-19 , Quimioterapia Combinada , Enfermedades Gastrointestinales , Hidroxicloroquina , Metaanálisis en Red , SARS-CoV-2 , Azitromicina/uso terapéutico , Azitromicina/efectos adversos , Humanos , Hidroxicloroquina/uso terapéutico , Hidroxicloroquina/efectos adversos , Enfermedades Gastrointestinales/inducido químicamente , Enfermedades Gastrointestinales/epidemiología , COVID-19 , Ivermectina/uso terapéutico , Ivermectina/efectos adversos , Antibacterianos/uso terapéutico , Antibacterianos/efectos adversos , Antivirales/uso terapéutico , Antivirales/efectos adversos
3.
Br J Cancer ; 128(2): 245-254, 2023 01.
Artículo en Inglés | MEDLINE | ID: mdl-36352028

RESUMEN

BACKGROUND: Epidermal growth factor receptor (EGFR) is a therapeutic target to which HER2/HER3 activation may contribute resistance. This Phase I/II study examined the toxicity and efficacy of high-dose pulsed AZD8931, an EGFR/HER2/HER3 inhibitor, combined with chemotherapy, in metastatic colorectal cancer (CRC). METHODS: Treatment-naive patients received 4-day pulses of AZD8931 with irinotecan/5-FU (FOLFIRI) in a Phase I/II single-arm trial. Primary endpoint for Phase I was dose limiting toxicity (DLT); for Phase II best overall response. Samples were analysed for pharmacokinetics, EGFR dimers in circulating exosomes and Comet assay quantitating DNA damage. RESULTS: Eighteen patients received FOLFIRI and AZD8931. At 160 mg bd, 1 patient experienced G3 DLT; 160 mg bd was used for cohort expansion. No grade 5 adverse events (AE) reported. Seven (39%) and 1 (6%) patients experienced grade 3 and grade 4 AEs, respectively. Of 12 patients receiving 160 mg bd, best overall response rate was 25%, median PFS and OS were 8.7 and 21.2 months, respectively. A reduction in circulating HER2/3 dimer in the two responding patients after 12 weeks treatment was observed. CONCLUSIONS: The combination of pulsed high-dose AZD8931 with FOLFIRI has acceptable toxicity. Further studies of TKI sequencing may establish a role for pulsed use of such agents rather than continuous exposure. TRIAL REGISTRATION NUMBER: ClinicalTrials.gov number: NCT01862003.


Asunto(s)
Neoplasias Colorrectales , Receptor ErbB-3 , Humanos , Receptor ErbB-3/metabolismo , Transducción de Señal , Quinazolinas/efectos adversos , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Neoplasias Colorrectales/tratamiento farmacológico , Neoplasias Colorrectales/genética , Neoplasias Colorrectales/inducido químicamente , Fluorouracilo , Leucovorina/efectos adversos , Camptotecina , Receptor ErbB-2/genética , Receptor ErbB-2/metabolismo , Receptores ErbB/genética , Receptores ErbB/metabolismo
4.
Cytotherapy ; 25(1): 82-93, 2023 01.
Artículo en Inglés | MEDLINE | ID: mdl-36220712

RESUMEN

BACKGROUND AIMS: Delayed immune reconstitution is a major challenge after matched unrelated donor (MUD) stem cell transplant (SCT). In this randomized phase 2 multi-center trial, Adoptive Immunotherapy with CD25/71 allodepleted donor T cells to improve immunity after unrelated donor stem cell transplant (NCT01827579), the authors tested whether allodepleted donor T cells (ADTs) can safely be used to improve immune reconstitution after alemtuzumab-based MUD SCT for hematological malignancies. METHODS: Patients received standard of care or up to three escalating doses of ADTs generated through CD25+/CD71+ immunomagnetic depletion. The primary endpoint of the study was circulating CD3+ T-cell count at 4 months post-SCT. Twenty-one patients were treated, 13 in the ADT arm and eight in the control arm. RESULTS: The authors observed a trend toward improved CD3+ T-cell count at 4 months in the ADT arm versus the control arm (230/µL versus 145/µL, P = 0.18), and three ADT patients achieved normal CD3+ T-cell count at 4 months (>700/µL). The rates of significant graft-versus-host disease (GVHD) were comparable in both cohorts, with grade ≥2 acute GVHD in seven of 13 and four of eight patients and chronic GVHD in three of 13 and three of eight patients in the ADT and control arms, respectively. CONCLUSIONS: These data suggest that adoptive transfer of ADTs is safe, but that in the MUD setting the benefit in terms of T-cell reconstitution is limited. This approach may be of more use in the context of more rigorous T-cell depletion.


Asunto(s)
Enfermedad Injerto contra Huésped , Trasplante de Células Madre Hematopoyéticas , Humanos , Linfocitos T , Donante no Emparentado , Trasplante de Células Madre Hematopoyéticas/efectos adversos , Inmunoterapia
5.
PLoS Biol ; 18(8): e3000820, 2020 08.
Artículo en Inglés | MEDLINE | ID: mdl-32866173

RESUMEN

Mutations in the gene encoding the microtubule-severing protein spastin (spastic paraplegia 4 [SPG4]) cause hereditary spastic paraplegia (HSP), associated with neurodegeneration, spasticity, and motor impairment. Complicated forms (complicated HSP [cHSP]) further include cognitive deficits and dementia; however, the etiology and dysfunctional mechanisms of cHSP have remained unknown. Here, we report specific working and associative memory deficits upon spastin depletion in mice. Loss of spastin-mediated severing leads to reduced synapse numbers, accompanied by lower miniature excitatory postsynaptic current (mEPSC) frequencies. At the subcellular level, mutant neurons are characterized by longer microtubules with increased tubulin polyglutamylation levels. Notably, these conditions reduce kinesin-microtubule binding, impair the processivity of kinesin family protein (KIF) 5, and reduce the delivery of presynaptic vesicles and postsynaptic α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptors. Rescue experiments confirm the specificity of these results by showing that wild-type spastin, but not the severing-deficient and disease-associated K388R mutant, normalizes the effects at the synaptic, microtubule, and transport levels. In addition, short hairpin RNA (shRNA)-mediated reduction of tubulin polyglutamylation on spastin knockout background normalizes KIF5 transport deficits and attenuates the loss of excitatory synapses. Our data provide a mechanism that connects spastin dysfunction with the regulation of kinesin-mediated cargo transport, synapse integrity, and cognition.


Asunto(s)
Ácido Glutámico/metabolismo , Cinesinas/metabolismo , Trastornos de la Memoria/metabolismo , Trastornos de la Memoria/fisiopatología , Memoria a Corto Plazo , Neuronas/metabolismo , Espastina/deficiencia , Tubulina (Proteína)/metabolismo , Potenciales de Acción , Animales , Membrana Celular/metabolismo , Espinas Dendríticas/metabolismo , Espinas Dendríticas/ultraestructura , Potenciales Postsinápticos Excitadores , Hipocampo/patología , Hipocampo/fisiopatología , Ratones Noqueados , Microtúbulos/metabolismo , Microtúbulos/ultraestructura , Actividad Motora , Neuronas/patología , Neuronas/ultraestructura , Transporte de Proteínas , Espastina/metabolismo , Sinapsis/metabolismo , Sinapsis/ultraestructura , Vesículas Sinápticas/metabolismo
6.
Support Care Cancer ; 31(8): 484, 2023 Jul 22.
Artículo en Inglés | MEDLINE | ID: mdl-37480546

RESUMEN

PURPOSE: The use of electronic patient-reported outcome (ePRO) data in routine care has been tied to direct patient benefits such as improved quality of care and symptom control and even overall survival. The modes of action behind such benefits are seldom described in detail. Here, we describe the development of a model of care leveraging ePRO data to monitor and manage symptoms of patients treated with immune checkpoint inhibitors. METHODS: Development was split into four stages: (1) identification of an underlying theoretical framework, (2) the selection of an ePRO measure (ePROM), (3) the adaptation of an electronic application to collect ePRO data, and (4) the description of an ePRO-oriented workflow. The model of care is currently evaluated in a bicentric longitudinal randomized controlled phase II trial, the IePRO study. RESULTS: The IePRO model of care is grounded in the eHealth Enhanced Chronic Care Model. Patients are prompted to report symptoms using an electronic mobile application. Triage nurses are alerted, review the reported symptoms, and contact patients in case of a new or worsening symptom. Nurses use the UKONS 24-hour telephone triage tool to issue patient management recommendations to the oncology team. Adapted care coordinating procedures facilitate team collaboration and provide patients with timely feedback. CONCLUSION: This report clarifies how components of care are created and modified to leverage ePRO to enhance care. The model describes a workflow that enables care teams to be proactive and provide patients with timely, multidisciplinary support to manage symptoms.


Asunto(s)
Aplicaciones Móviles , Telemedicina , Humanos , Inhibidores de Puntos de Control Inmunológico , Oncología Médica , Telemedicina/métodos , Medición de Resultados Informados por el Paciente
7.
Int J Gynecol Cancer ; 33(10): 1548-1556, 2023 10 02.
Artículo en Inglés | MEDLINE | ID: mdl-37699707

RESUMEN

OBJECTIVES: To evaluate the prevalence of post-operative complications and quality of life (QoL) related to sentinel lymph node (SLN) biopsy vs systematic lymphadenectomy in endometrial cancer. METHODS: A prospective cohort included women with early-stage endometrial carcinoma who underwent lymph node staging, grouped as follows: SLN group (sentinel lymph node only) and SLN+LND group (sentinel lymph node biopsy with addition of systematic lymphadenectomy). The patients had at least 12 months of follow-up, and QoL was assessed by European Organization for Research and Treatment of Cervical Cancer Quality of Life Questionnaire 30 (EORTC-QLQ-C30) and EORTC-QLQ-Cx24. Lymphedema was also assessed by clinical evaluation and perimetry. RESULTS: 152 patients were included: 113 (74.3%) in the SLN group and 39 (25.7%) in the SLN+LND group. Intra-operative surgical complications occurred in 2 (1.3%) cases, and all belonged to SLN+LND group. Patients undergoing SLN+LND had higher overall complication rates than those undergoing SLN alone (33.3% vs 14.2%; p=0.011), even after adjusting for confound factors (OR=3.45, 95% CI 1.40 to 8.47; p=0.007). The SLN+LND group had longer surgical time (p=0.001) and need for admission to the intensive care unit (p=0.001). Moreover, the incidence of lymphocele was found in eight cases in the SLN+LND group (0 vs 20.5%; p<0.001). There were no differences in lymphedema rate after clinical evaluation and perimetry. However, the lymphedema score was highest when lymphedema was reported by clinical examination at 6 months (30.1 vs 7.8; p<0.001) and at 12 months (36.3 vs 6.0; p<0.001). Regarding the overall assessment of QoL, there was no difference between groups at 12 months of follow-up. CONCLUSIONS: There was a higher overall rate of complications for the group undergoing systematic lymphadenectomy, as well as higher rates of lymphocele and lymphedema according to the symptom score. No difference was found in overall QoL between SLN and SLN+LND groups.


Asunto(s)
Neoplasias Endometriales , Linfedema , Linfocele , Humanos , Femenino , Calidad de Vida , Estudios Prospectivos , Biopsia del Ganglio Linfático Centinela/efectos adversos , Ganglios Linfáticos/cirugía , Ganglios Linfáticos/patología , Escisión del Ganglio Linfático/efectos adversos , Neoplasias Endometriales/patología , Prevalencia , Linfedema/epidemiología , Linfedema/etiología , Linfedema/patología , Estadificación de Neoplasias , Estudios Retrospectivos
8.
Molecules ; 28(4)2023 Feb 16.
Artículo en Inglés | MEDLINE | ID: mdl-36838849

RESUMEN

Many plants are used by the population through popular knowledge passed from generation to generation for the treatment of various diseases. However, there is not always any scientific content supporting these uses, which is very important for safety. One of these plants is the fruit of the Spondias genus, which during its processing generates various residues that are discarded, but which also have pharmacological properties. The focus of this review is to survey the pharmacological activities that Spondias genus shows, as well as which part of the plant is used, since there is a lot of richness in its by-products, such as leaf, bark, resin, seed, and peel, which are discarded and could be reused. The main activities of this genus are antioxidant, anti-inflammatory, antidiabetic, antifungal, and antiviral, among others. These properties indicate that this genus could be used in the treatment of several diseases, but there are still not many products available on the market that use this genus as an active ingredient.


Asunto(s)
Anacardiaceae , Extractos Vegetales , Etnofarmacología , Extractos Vegetales/química , Fitoterapia , Medicina Tradicional , Fitoquímicos
9.
Molecules ; 28(3)2023 Feb 02.
Artículo en Inglés | MEDLINE | ID: mdl-36771111

RESUMEN

Achieving the best possible outcome for the therapy is the main goal of a medicine. Therefore, nanocarriers and co-delivery strategies were invented to meet this need, as they can benefit many diseases. This approach was applied specifically for cancer treatment, with some success. However, these strategies may benefit many other clinical issues. Skin is the largest and most exposed organ of the human body, with physiological and psychological properties. Due to its exposition and importance, it is not difficult to understand how many skin diseases may impact on patients' lives, representing an important burden for society. Thus, this review aims to summarize the state of the art in research concerning nanocarriers and co-delivery strategies for topical agents' applications targeting skin diseases. The challenge for the medicine of the future is to deliver the drug with spatial and temporal control. Therefore, the co-encapsulation of drugs and the appropriate form of administration for them are so important and remain as unmet needs.


Asunto(s)
Nanopartículas , Enfermedades de la Piel , Humanos , Preparaciones Farmacéuticas/metabolismo , Piel/metabolismo , Absorción Cutánea , Enfermedades de la Piel/metabolismo , Sistemas de Liberación de Medicamentos , Portadores de Fármacos/metabolismo , Administración Cutánea , Administración Tópica
10.
J Interprof Care ; 37(3): 491-503, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-35285394

RESUMEN

The current complex scenario of medication use calls for the implementation of interprofessional education (IPE) initiatives focused on shared decision making (SDM) in drug therapy. A scoping review was conducted to collate, summarize, and report the evidence available on IPE teaching and learning approaches in this context, involving pre-licensure healthcare students. Searches were conducted in seven electronic databases, with 21 articles meeting the inclusion criteria. This review examines educational strategies employed for interprofessional SDM as well as characteristics of students, teachers, and tutors involved in IPE interventions. The reviewed studies lack detailed description of the students' decision-making process, and none addresses aspects related to patient preferences as a part of learning outcomes. We identified shortcomings in how IPE interventions are assessed and reported. Only a few of the studies explicitly describe the use of competency-based frameworks proposed by national and international organizations, and less than 60% describe learning outcomes. The absence of experiences focused on interprofessional SDM in drug therapy suggests a gap that needs to be addressed with future studies evaluated in a robust way. We argue that such experiences enable students, as a team, to learn to share decisions with the patient as an effective team member.


Asunto(s)
Toma de Decisiones Conjunta , Educación Interprofesional , Humanos , Relaciones Interprofesionales , Aprendizaje , Atención a la Salud , Toma de Decisiones
11.
Ann Surg Oncol ; 29(4): 2155-2162, 2022 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-35000079

RESUMEN

BACKGROUND: Routine preoperative screening of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) with reverse transcriptase-polymerase chain reaction (RT-PCR) may reduce in-hospital SARS-CoV-2 transmission. METHODS: This was a prospective, observational, cohort study. The endpoints were the incidence of asymptomatic patients with positive preoperative RT-PCR results and the incidence and factors associated with postoperative SARS-CoV-2 infection in patients with cancer referred for elective surgery. Patients with elective surgery between May and October 2020 were included. RT-PCR of nasopharyngeal swabs was performed preoperatively for all patients. Postoperative SARS-CoV-2 infection was assessed within 30 postoperative days. RESULTS: A total of 1636 preoperative screening RT-PCR tests were performed. Of these, 102 (6.2%) cases were positive, and 1,298 surgical procedures were analyzed. The postoperative SARS-CoV-2 infection rate was 0.9%. The length of stay (odds ratio [OR] 1.08; 95% confidence interval [CI] 1.04-1.11; p < 0.001), surgical time (OR 1.004; 95% CI 1.001-1.008; p = 0.023), intensive care unit admission (OR 7.7; 95% CI 2.03-29.28; p = 0.003), and hospital readmissions (OR 9.56; 95% CI 2.50-36.56; p = 0.001) were associated with postoperative coronavirus disease (COVID-19). Using unadjusted and adjusted logistic regression, length of stay (OR 1.08; 95% CI 1.04-1.11; p < 0.001), and readmission (OR 9.02; 95% CI 2.30-35.48; p = 0.002) were independent factors of postoperative COVID-19. CONCLUSIONS: Screening patients preoperatively may reduce in-hospital SARS-CoV-2 transmission. Length of stay and readmission were independently correlated with postoperative COVID-19.


Asunto(s)
COVID-19 , COVID-19/epidemiología , Estudios de Cohortes , Humanos , Pandemias , Estudios Prospectivos , SARS-CoV-2
12.
Ann Surg Oncol ; 29(2): 1151-1160, 2022 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-34545531

RESUMEN

PURPOSE: To analyze the survival outcomes of patients in a Brazilian cohort who underwent minimally invasive surgery (MIS) compared with open surgery for early stage cervical cancer. METHODS: A multicenter database was constructed, registering 1280 cervical cancer patients who had undergone radical hysterectomy from 2000 to 2019. For the final analysis, we included cases with a tumor ≤ 4 cm (stages Ia2 to Ib2, FIGO 2018) that underwent surgery from January 2007 to December 2017. Propensity score matching was also performed. RESULTS: A total of 776 cases were ultimately analyzed, 526 of which were included in the propensity score matching analysis (open, n = 263; MIS, n = 263). There were 52 recurrences (9.9%), 28 (10.6%) with MIS and 24 (9.1%) with open surgery (p = 0.55); and 34 deaths were recorded, 13 (4.9%) and 21 (8.0%), respectively (p = 0.15). We noted a 3-year disease-free survival (DFS) rate of 88.2% and 90.3% for those who received MIS and open surgery, respectively (HR 1.32; 95% CI: 0.76-2.29; p = 0.31) and a 5-year overall survival (OS) rate of 91.8% and 91.1%, respectively (HR 0.80; 95% CI: 0.40-1.61; p = 0.53). There was no difference in 3-year DFS rates between open surgery and MIS for tumors ≤ 2 cm (95.7% vs. 90.8%; p = 0.16) or > 2 cm (83.9% vs. 85.4%; p = 0.77). Also, the 5-year OS between open surgery and MIS did not differ for tumors ≤ 2 cm (93.1% vs. 93.6%; p = 0.82) or > 2 cm (88.9% vs. 89.8%; p = 0.35). CONCLUSIONS: Survival outcomes were similar between minimally invasive and open radical hysterectomy in this large retrospective multicenter cohort.


Asunto(s)
Laparoscopía , Neoplasias del Cuello Uterino , Supervivencia sin Enfermedad , Femenino , Humanos , Histerectomía , Procedimientos Quirúrgicos Mínimamente Invasivos , Estadificación de Neoplasias , Estudios Retrospectivos , Neoplasias del Cuello Uterino/patología , Neoplasias del Cuello Uterino/cirugía
13.
Amino Acids ; 54(5): 733-747, 2022 May.
Artículo en Inglés | MEDLINE | ID: mdl-35279763

RESUMEN

Bombesin mediates several biological activities in the gastrointestinal (GI) tract and central nervous system in mammals, including smooth muscle contraction, secretion of GI hormones and regulation of homeostatic mechanisms. Here, we report a novel bombesin-like peptide isolated from Boana raniceps. Its amino acid sequence, GGNQWAIGHFM-NH2, was identified and structurally confirmed by HPLC, MS/MS and 454-pyrosequencing; the peptide was named BR-bombesin. The effect of BR-bombesin on smooth muscle contraction was assessed in ileum and esophagus, and its anti-secretory activity was investigated in the stomach. BR-bombesin exerted significant contractile activity with a concentration-response curve similar to that of commercially available bombesin in ileum strips of Wistar rats. In esophageal strips, BR-bombesin acted as an agonist, as many other bombesin-related peptides act, although with different behavior compared to the muscarinic agonist carbachol. Moreover, BR-bombesin inhibited stomach secretion by approximately 50% compared to the untreated control group. This novel peptide has 80% and 70% similarity with the 10-residue C-terminal domain of human neuromedin B (NMB) and human gastrin releasing peptide (GRP10), respectively. Molecular docking analysis revealed that the GRP receptor had a binding energy equal to - 7.3 kcal.mol-1 and - 8.5 kcal.mol-1 when interacting with bombesin and BR-bombesin, respectively. Taken together, our data open an avenue to investigate BR-bombesin in disorders that involve gastrointestinal tract motility and acid gastric secretion.


Asunto(s)
Bombesina , Receptores de Bombesina , Animales , Anuros/metabolismo , Bombesina/metabolismo , Bombesina/farmacología , Mamíferos/metabolismo , Simulación del Acoplamiento Molecular , Péptidos/farmacología , Ratas , Ratas Wistar , Receptores de Bombesina/genética , Receptores de Bombesina/metabolismo , Estómago , Espectrometría de Masas en Tándem
14.
J Surg Res ; 274: 68-76, 2022 06.
Artículo en Inglés | MEDLINE | ID: mdl-35123285

RESUMEN

INTRODUCTION: The pathologic classification of pseudomyxoma peritonei is controversial. This study aimed to standardize the histopathological evaluation of pseudomyxoma peritonei and identify the clinicopathological factors associated with survival. METHODS: A pathologic review was performed to systematize the pathology report and verify the relationship between clinical features and survival. Terminology was based on the World Health Organization and Peritoneal Surface Oncology Group International definitions. Preoperative serum levels of carcinoembryonic antigen, CA19-9, and CA-125 were evaluated to determine their association with overall survival (OS) and ability to predict CC0-1 cytoreduction. RESULTS: Among 109 patients with carcinomas resulting from primary appendiceal neoplasms, 72 had pseudomyxoma peritonei of appendiceal origin and underwent debulking surgery. CC0-1 cytoreduction and CC2-3 cytoreduction were achieved in 61% and 39% of patients, respectively. Patients in the CC0-1 and CC2-3 groups had an OS of 122.80 and 32.92 mo, respectively. The histologic grade was associated with CC0-1 cytoreduction; however, it did not influence OS. Patients with CC0-1 cytoreduction, acellular mucin, and low-grade lesions had better disease-free survival. Higher preoperative CA19-9 levels were associated with poor OS. Normal carcinoembryonic antigen values were associated with 100% sensitivity for predicting CC0-1. CA19-9 levels of 625 U/mL were associated with a low possibility of predicting CC0-1. CONCLUSIONS: Histologic grades are associated with disease-free survival when CC0-1 cytoreduction is achieved. Normal preoperative CA19-9 levels were associated with a better OS. CC0-1 cytoreduction is the main determinant of longer survival.


Asunto(s)
Neoplasias del Apéndice , Hipertermia Inducida , Neoplasias Peritoneales , Seudomixoma Peritoneal , Neoplasias del Apéndice/patología , Biomarcadores de Tumor , Antígeno CA-19-9 , Antígeno Carcinoembrionario , Procedimientos Quirúrgicos de Citorreducción/métodos , Humanos , Hipertermia Inducida/métodos , Neoplasias Peritoneales/diagnóstico , Neoplasias Peritoneales/cirugía , Pronóstico , Seudomixoma Peritoneal/diagnóstico , Seudomixoma Peritoneal/patología , Seudomixoma Peritoneal/cirugía
15.
J Surg Oncol ; 126(1): 10-19, 2022 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-35689574

RESUMEN

BACKGROUND: Risk-reducing operations are an important part of the management of hereditary predisposition to cancer. In selected cases, they can considerably reduce the morbidity and mortality associated with cancer in this population. OBJECTIVES: The Brazilian Society of Surgical Oncology (BSSO) developed this guideline to establish national benchmarks for cancer risk-reducing operations. METHODS: The guideline was prepared from May to December 2021 by a multidisciplinary team of experts to discuss the surgical management of cancer predisposition syndromes. Fourteen questions were defined and assigned to expert groups that reviewed the literature and drafted preliminary recommendations. Following a review by the coordinators and a second review by all participants, the groups made final adjustments, classified the level of evidence, and voted on the recommendations. RESULTS: For all questions including risk-reduction bilateral salpingo-oophorectomy, hysterectomy, and mastectomy, major agreement was achieved by the participants, always using accessible alternatives. CONCLUSION: This and its accompanying article represent the first guideline in cancer risk reduction surgery developed by the BSSO, and it should serve as an important reference for the management of families with cancer predisposition.


Asunto(s)
Neoplasias de la Mama , Ginecología , Neoplasias Ováricas , Oncología Quirúrgica , Brasil/epidemiología , Neoplasias de la Mama/genética , Neoplasias de la Mama/prevención & control , Neoplasias de la Mama/cirugía , Femenino , Humanos , Mastectomía , Neoplasias Ováricas/cirugía
16.
J Surg Oncol ; 126(1): 20-27, 2022 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-35689578

RESUMEN

BACKGROUND: Risk-reducing operations are an important part of the management of hereditary predisposition to cancer. In selected cases, they can considerably reduce the morbidity and mortality associated with cancer in this population. OBJECTIVES: The Brazilian Society of Surgical Oncology (BSSO) developed this guideline to establish national benchmarks for cancer risk-reducing operations. METHODS: The guideline was prepared from May to December 2021 by a multidisciplinary team of experts to discuss the surgical management of cancer predisposition syndromes. Eleven questions were defined and assigned to expert groups that reviewed the literature and drafted preliminary recommendations. Following a review by the coordinators and a second review by all participants, the groups made final adjustments, classified the level of evidence, and voted on the recommendations. RESULTS: For all questions including risk-reducing colectomy, gastrectomy, and thyroidectomy, a major agreement was achieved by the participants, always using accessible alternatives. CONCLUSION: This and its accompanying article represent the first guideline in cancer risk reduction surgery developed by the BSSO and it should serve as an important reference for the management of families with cancer predisposition.


Asunto(s)
Neoplasias , Oncología Quirúrgica , Brasil/epidemiología , Humanos , Glándula Tiroides
17.
J Surg Oncol ; 126(1): 37-47, 2022 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-35689582

RESUMEN

OBJECTIVE: Several controversies remain on conservative management of cervical cancer. Our aim was to develop a consensus recommendation on important and novel topics of fertility-sparing treatment of cervical cancer. METHODS: The consensus was sponsored by the Brazilian Society of Surgical Oncology (BSSO) from March 2020 to September 2020 and included a multidisciplinary team of 55 specialists. A total of 21 questions were addressed and they were assigned to specialists' groups that reviewed the literature and drafted preliminary recommendations. Further, the coordinators evaluated the recommendations that were classified by the level of evidence, and finally, they were voted by all participants. RESULTS: The questions included controversial topics on tumor assessment, surgical treatment, and surveillance in conservative management of cervical cancer. The two topics with lower agreement rates were the role of minimally invasive approach in radical trachelectomy and parametrial preservation. Additionally, only three recommendations had <90% of agreement (fertility preservation in Stage Ib2, anti-stenosis device, and uterine transposition). CONCLUSIONS: As very few clinical trials have been developed in surgery for cervical cancer, most recommendations were supported by low levels of evidence. We addressed important and novel topics in conservative management of cervical cancer and our study may contribute to literature.


Asunto(s)
Preservación de la Fertilidad , Oncología Quirúrgica , Traquelectomía , Neoplasias del Cuello Uterino , Brasil , Consenso , Femenino , Humanos , Estadificación de Neoplasias , Neoplasias del Cuello Uterino/patología , Neoplasias del Cuello Uterino/cirugía
18.
Int J Gynecol Cancer ; 32(5): 676-679, 2022 05 03.
Artículo en Inglés | MEDLINE | ID: mdl-35236752

RESUMEN

BACKGROUND: Growing evidence suggest that sentinel lymph node (SLN) biopsy in endometrial cancer accurately detects lymph node metastasis. However, prospective randomized trials addressing the oncological outcomes of SLN biopsy in endometrial cancer without lymphadenectomy are lacking. PRIMARY OBJECTIVES: The present study aims to confirm that SLN biopsy without systematic node dissection does not negatively impact oncological outcomes. STUDY HYPOTHESIS: We hypothesized that there is no survival benefit in adding systematic lymphadenectomy to sentinel node mapping for endometrial cancer staging. Additionally, we aim to evaluate morbidity and impact in quality of life (QoL) after forgoing systematic lymphadenectomy. TRIAL DESIGN: This is a collaborative, multicenter, open-label, non-inferiority, randomized trial. After total hysterectomy, bilateral salpingo-oophorectomy and SLN biopsy, patients will be randomized (1:1) into: (a) no further lymph node dissection or (b) systematic pelvic and para-aortic lymphadenectomy. MAJOR INCLUSION AND EXCLUSION CRITERIA: Inclusion criteria are patients with high-grade histologies (endometrioid G3, serous, clear cell, and carcinosarcoma), endometrioid G1 or G2 with imaging concerning for myometrial invasion of ≥50% or cervical invasion, clinically suitable to undergo systematic lymphadenectomy. PRIMARY ENDPOINTS: The primary objective is to compare 3-year disease-free survival and the secondary objectives are 5-year overall survival, morbidity, incidence of lower limb lymphedema, and QoL after SLN mapping ± systematic lymphadenectomy in high-intermediate and high-risk endometrial cancer. SAMPLE SIZE: 178 participants will be randomized in this study with an estimated date for completing accrual of December 2024 and presenting results in 2027. TRIAL REGISTRATION NUMBER: NCT03366051.


Asunto(s)
Neoplasias Endometriales , Ganglio Linfático Centinela , Neoplasias Endometriales/cirugía , Femenino , Humanos , Escisión del Ganglio Linfático , Estudios Prospectivos , Calidad de Vida , Ganglio Linfático Centinela/cirugía
19.
Int J Gynecol Cancer ; 32(2): 195-197, 2022 02.
Artículo en Inglés | MEDLINE | ID: mdl-34750197

RESUMEN

BACKGROUND: Prehabilitation is a process that occurs before surgery and aims to improve patient functional capacity and enhance surgical recovery. This process includes medical, nutritional, physical, and psychological interventions that may reduce the duration of hospital stay and provide postoperative physical benefits. PRIMARY OBJECTIVE: To evaluate the impact of a prehabilitation program on postoperative recovery time for patients who will undergo gynecological surgery following the Enhanced Recovery After Surgery (ERAS) guidelines. STUDY HYPOTHESIS: A multidisciplinary, preoperative prehabilitation program for patients who will undergo gynecological surgery leads to a reduction in the length of hospital stay and improves patient functional capacity. TRIAL DESIGN: Prospective, interventionist, and randomized controlled trial in a 1:1 ratio, open to multidisciplinary team and patients, blinded to surgeons and anesthesiologists. The control group will undergo ERAS standard preoperative care while the intervention group will have ERAS standard preoperative care plus prehabilitation. MAJOR INCLUSION CRITERIA: Patients scheduled to undergo gynecologic surgery performed by laparotomy with a preoperative schedule that allows prehabilitation intervention for 2 to 3 weeks. PRIMARY ENDPOINT: To compare time between surgery and the day the patient is ready for discharge in patients who underwent the prehabilitation process versus those who did not. Readiness for discharge is defined as the ability to take care of one's-self, to walk alone, and to ingest at least 75% of daily recommended calorie intake. SAMPLE SIZE: 194 participants ESTIMATED DATES FOR COMPLETING ACCRUAL AND PRESENTING RESULTS: At present, 30 patients have been recruited. Accrual should be completed by 2023-24. TRIAL REGISTRATION: The study is approved by the IBCC - São Camilo Oncologia ethics committee (reference number 4.256.553) and is registered at clinicaltrials.gov (NCT04596800).


Asunto(s)
Recuperación Mejorada Después de la Cirugía , Neoplasias de los Genitales Femeninos/cirugía , Ejercicio Preoperatorio , Femenino , Humanos , Tiempo de Internación , Estudios Prospectivos , Ensayos Clínicos Controlados Aleatorios como Asunto , Método Simple Ciego
20.
Int J Gynecol Cancer ; 32(2): 141-146, 2022 02.
Artículo en Inglés | MEDLINE | ID: mdl-34969827

RESUMEN

OBJECTIVES: Cervical cancer is the fourth most common cancer in women worldwide. Epidemiological and quality of life (QoL) data in patients with cervical cancer from low- and middle-income countries are scarce. We aimed to describe sociodemographic and clinicopathological characteristics and quality of life of patients with cervical cancer at diagnosis in Brazil. METHODS: EVITA is a prospective cohort study of newly diagnosed patients with cervical cancer from May 2016 to December 2017, stages I-IVB, from 16 Brazilian sites representing the five Brazilian regions. At baseline, medical evaluation was performed and European Organization for Research and Treatment of Cancer (EORTC) QLQ-CX24/C30 questionnaires were administered. RESULTS: A total of 631 patients were included. Mean±SD age was 49.3±13.9 years; skin color was non-white in 65.3%, and 68.0% had ≤8 years of formal education. In total, 85.1% of patients had a Pap smear. The main reasons reported by patients for not having a Pap smear were: lack of interest (46.9%), shame or embarrassment (19.7%), lack of knowledge (19.7%), and difficulty with access (9.1%). Most patients were diagnosed with locally advanced or metastatic disease (FIGO clinical stage II-IV in 81.8%- stage II in 35.2%, stage III in 36.1%, and stage IV in 10.5%). Patients with clinical stage III-IV had worse physical functioning and role functioning. CONCLUSIONS: Cervical cancer in Brazil is usually diagnosed at an advanced stage. Most patients have low formal education and are unemployed. Lack of interest was identified as a main reason for not having a screening test, and limited access was reported as a reason by <10% of the patients. Awareness campaigns must be a governmental priority, specially focused on the needy population, along with wide access to treatment.


Asunto(s)
Carcinoma de Células Escamosas/epidemiología , Conocimientos, Actitudes y Práctica en Salud , Tamizaje Masivo/estadística & datos numéricos , Neoplasias del Cuello Uterino/epidemiología , Adulto , Brasil/epidemiología , Carcinoma de Células Escamosas/psicología , Femenino , Accesibilidad a los Servicios de Salud/estadística & datos numéricos , Humanos , Persona de Mediana Edad , Prueba de Papanicolaou/estadística & datos numéricos , Estudios Prospectivos , Calidad de Vida , Factores Socioeconómicos , Encuestas y Cuestionarios , Neoplasias del Cuello Uterino/psicología
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