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1.
Int J Surg ; 2024 Apr 11.
Artigo em Inglês | MEDLINE | ID: mdl-38608195

RESUMO

INTRODUCTION: Involvement of the inferior vena cava (IVC) and hepatic veins (HV) has been considered a relative contraindication to hepatic resection for primary and metastatic liver tumors. However, patients affected by tumors extending to the IVC have limited therapeutic options and suffer worsening of quality of life due to IVC compression. METHODS: Cases of primary and metastatic liver tumors with vena cava infiltration from 10 international centers were collected (7 European, 1 US, 2 Brazilian, 1 Indian) were collected. Inclusion criteria for the study were major liver resection with concomitant vena cava replacement. Clinical data and short-term outcomes were analyzed. RESULTS: 36 cases were finally included in the study. Median tumor max size was 98 mm (range: 25-250). A biliary reconstruction was necessary in 28% of cases, while a vascular reconstruction other than vena cava in 34% of cases. Median operative time was 462 min (range: 230-750), with 750 median ml of estimated blood loss and a median of one pRBC transfused intraoperatively (range: 0-27). Median ICU stay was 4 days (range: 1-30) with overall in-hospital stay of 15 days (range: 3-46), post-operative CCI score of 20.9 (range: 0-100), 12% incidence of PHLF grade B-C. Five patients died in a 90-days interval from surgery, 1 due to heart failure, 1 due to septic shock and 3 due to multiorgan failure. With a median follow-up of 17 months (interquartile range: 11-37), the estimated five-years overall survival was 48% (95% CI: 27%-66%), and five-year cumulative incidence of tumor recurrence was 55% (95% CI: 33%-73%). CONCLUSIONS: Major liver resections with vena cava replacement can be performed with satisfactory results in expert HPB centers. This surgical strategy represents a feasible alternative for otherwise unresectable lesions and is associated with favorable prognosis compared to non-operative management, especially in patients affected by intrahepatic cholangiocarcinoma.

2.
Rhinology ; 62(1): 55-62, 2024 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-37772802

RESUMO

BACKGROUND: Although the COVID-19 pandemic has increased the prevalence of cases with olfactory loss, other respiratory viruses can also cause this condition. We aimed to compare the prevalence of acute SARS-CoV-2 infection and other respiratory viruses in patients with sudden smell loss, and to assess the impact of SARS-CoV-2 viral load and co-infection on olfactory symptoms. METHODS: Patients with sudden smell loss were recruited in a multicenter prospective cohort study in 15 hospitals in Brazil. Clinical questionnaire, Connecticut Chemosensory Clinical Research Center (CCCRC) olfactory test and nasopharyngeal swab to perform a PCR-based respiratory viral panel were collected at first visit (day 0) and 30 and 60 days after recruitment. RESULTS: 188 of 213 patients presented positive test result for SARS-CoV-2, among which 65 were co-infected with other respiratory viruses (e.g., rhinovirus, enterovirus, and parainfluenza). 25 had negative test results for SARS-CoV-2. Patients in both SARSCoV-2 and non-SARS-CoV-2 groups had objective anosmia (less than 2 points according to the psychophysical olfactory CCCRC) at day 0, with no significant difference between them. Both groups had significant smell scores improvement after 30 and 60 days, with no difference between them. Co-infection with other respiratory viruses, and SARS-CoV-2 viral load did not impact olfactory scores. CONCLUSION: Patients with sudden smell loss associated with SARS-CoV-2 and other respiratory viruses had similar presentation, with most participants initiating with anosmia, and total or near total recovery after 60 days. SARS-CoV-2 viral load and co-infections with other respiratory viruses were not associated with poorer olfactory outcomes.


Assuntos
COVID-19 , Coinfecção , Transtornos do Olfato , Humanos , SARS-CoV-2 , COVID-19/complicações , Anosmia/complicações , Anosmia/epidemiologia , Estudos Prospectivos , Pandemias , Coinfecção/complicações , Coinfecção/epidemiologia , Transtornos do Olfato/diagnóstico , Transtornos do Olfato/epidemiologia , Transtornos do Olfato/etiologia , Olfato
3.
Public Health ; 224: 131-139, 2023 Sep 28.
Artigo em Inglês | MEDLINE | ID: mdl-37776607

RESUMO

OBJECTIVES: The COVID-19 pandemic has differentially impacted cardiovascular disease (CVD) mortality worldwide. Causes of death misclassification may be one of the reasons. We evaluated the impact of the pandemic on CVD mortality in Brazil, comparing underlying causes (UCs) and multiple causes (MCs) of death. STUDY DESIGN: Ecological time-series study. METHODS: An ecological, time-series study was conducted analysing age-standardised death rates for CVD, from epidemiological week (EW) 10/2020 to 39/2021, using data from the Mortality Information System, Brazil. CVD was defined using the International Classification of Diseases (ICD-10) coding, if reported as UC or MC of death. Observed and expected data (mean for the same EW, 2017-2019) were compared. Risk ratios (RiRs) were analysed, and 95% confidence intervals (CIs) were calculated. RESULTS: Age-standardised mortality rate for CVD as UC of death was 165.8 (95%CI: 165.4-166.3) per 100,000 inhabitants, similar to what was expected (165.6/100,000, 95%CI: 165.2-166.1, RiR = 1.00). There was increased out-of-hospital mortality (RiR = 1.18; 95%CI: 1.17-1.19) and deaths of ill-defined causes (RiR = 1.43; 95%CI: 1.42-1.44). The increase in out-of-hospital deaths was more pronounced in the North (RiR = 1.33; 95%CI 1.30-1.36) region, with a less resilient health system. Conversely, as MCs of death, there was a 10% increase in CVD mortality (observed: 243.2 [95%CI: 242.7-243.7], expected: 221.6 [95%CI: 221.1-222.1] per 100,000). An increase also occurred in the North and Central West regions (RiR = 1.16; 95%CI: 1.15-1.18), among men (RiR = 1.11; 95%CI: 1.11-1.12) and individuals aged ≥60 years (RiR = 1.11; 95%CI: 1.10-1.11). CONCLUSIONS: During the pandemic, mortality rates for CVD as MCs of death increased in Brazil, whereas as UC mortality rates did not change. Higher out-of-hospital mortality, misclassification, and competing causes of death may explain this pattern.

4.
J Gastrointest Oncol ; 14(4): 1964-1981, 2023 Aug 31.
Artigo em Inglês | MEDLINE | ID: mdl-37720458

RESUMO

Background and Objective: Pancreatic adenocarcinoma remains a dismal disease and is expected to become an even greater burden in the near future. This review focuses on the different surgical aspects for pancreaticoduodenectomy (PD), distal and total pancreatectomy (TP), incorporating lessons from both the western and eastern visions in treating pancreatic cancer. Methods: We conducted an extensive literature review through PubMed, prioritizing papers published in the last 5 years, but older emblematic papers were also included. We included articles that explored the treatment of pancreatic adenocarcinoma, with focus on the surgical aspect and strategies to improve outcomes. References of selected articles were also reviewed to identify any missed studies. Only papers in English were included. Key Content and Findings: As evidence continues to build, it is clear that both systemic and surgical therapies have a fundamental and complementary role. State of art surgical treatment encompasses complete mesopancreas excision for radical lymphadenectomy. Preoperative planning of dissection planes, extensive knowledge of vascular anatomic variations, oncological principles and expertise for vascular resections are mandatory to perform a more radical operation, in pursuit of improved outcomes. Conclusions: Based on current data, patient selection remains key and a more radical surgical approach brings more accomplishing results bringing as to believe that more is better.

6.
Front Genet ; 13: 886875, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36081988

RESUMO

Exposure to less-hygienic conditions during early childhood has been associated with stimulation and development of the immune system. A recent study indicated that exposure of piglets to soil-borne microbes during lactation was related with modulation of gut microbiota and immune function. To identify the potential molecular mechanisms and pathways impacted by early-life topsoil exposure, we analyzed the messenger RNA (mRNA) and micro-RNA (miRNA) expression in peripheral blood mononuclear cells (PBMCs) from these piglets. Total RNA was extracted from the PBMCs of piglets exposed to topsoil only from d 4-d 21 of life (mRNA n = 6; miRNA n = 5) or unexposed control pigs (mRNA n = 6; miRNA n = 8) at 11, 20, and 56 days of age. Small RNA and mRNA were sequenced with 50-bp single-end reads using Illumina chemistry. Sequence data were quality checked with FASTQC software and aligned to the Sscrofa 11.1 genome with the STAR aligner for mRNA and mirDeep2 for miRNA. Differential expression (DE) analysis was performed using PROC Glimmix of SAS to evaluate changes in expression due to topsoil exposure over time with genes declared DE at a false discovery rate (FDR) of q < 0.10. A total of 138 mRNA and 21 miRNAs were identified as DE for the treatment by age interaction. Ontology enrichment analysis of DE mRNA revealed Gene ontology (GO) terms directly involved in the connection between T-cell and antigen-presenting cells that are associated with T-cell activation. Key regulatory genes identified include PTPRJ, ITGB3, TRBV30, CD3D, mir-143, mir-29, and mir-148a. While these results require validation, this study provides data supporting the hypothesis that less-hygienic environments during early life may contribute to the development of the immune system.

7.
Public Health ; 210: 1-7, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-35863157

RESUMO

OBJECTIVES: This study aimed at identifying the sociodemographic and first treatment characteristics affecting time-to-treatment initiation (TTI) of patients with cutaneous melanoma assisted by the Brazilian Unified Health System (SUS). STUDY DESIGN: Retrospective observational study using cutaneous melanoma cases recorded in the Brazilian Hospital-Based Cancer Registries (HBCR). METHODS: A total of 12,783 cutaneous melanoma cases were included in the analysis. Based on the legislation, TTI in Brazil is 60 days; therefore, the cohort was dichotomized into TTI within 60 days and over. The association among variables was evaluated through the Chi-squared test. Kaplan-Meier method and log-rank hypothesis test were used to determine the probability of initiating treatment within 60 days. Cox proportional hazards regression model was used for multivariate analysis. RESULTS: Median TTI was 28 days (95% CI, 25-29). First treatment in SUS provided more than 60 days after diagnosis (34.8%) was associated with females; low level of formal education; living or getting treatment in northern Brazil; being diagnosed in SUS and treated at different healthcare facilities, in addition to starting treatment with radiotherapy or systemic therapy. There were no significant differences in access to health care before and after the enactment of the 60-day law. CONCLUSION: Increased TTI for cutaneous melanoma is associated with sociodemographic and first treatment characteristics in Brazil; approximately one-third of cases did not have access to first treatment within the period established by law. Receiving the diagnosis and treatment at different healthcare facilities (transitions in care) is the main independent factor associated with TTI longer than 60 days.


Assuntos
Melanoma , Neoplasias Cutâneas , Brasil/epidemiologia , Feminino , Acessibilidade aos Serviços de Saúde , Humanos , Masculino , Melanoma/terapia , Estudos Retrospectivos , Neoplasias Cutâneas/terapia , Tempo para o Tratamento , Melanoma Maligno Cutâneo
8.
Updates Surg ; 74(1): 81-86, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-35103918

RESUMO

The association of a bariatric operation during liver transplantation may benefit patients with liver failure and obesity and sleeve gastrectomy emerges as the procedure of choice. The aim of this study is to present our experience with combined liver transplantation and sleeve gastrectomy. During an 18-month period, seven patients were submitted to simultaneous liver transplant and sleeve gastrectomy (LTSG). There were four male and three female, and the mean recipient age was 60.5 years, mean BMI was 38.2 kg/m2, and mean MELD score was 25 points. The indication for liver transplantation was nonalcoholic steatohepatitis (NASH) with hepatocellular carcinoma (HCC) in four cases, hepatitis C with HCC in one case, pure NASH in one case and alcoholic cirrhosis with HCC in one case. Six patients are alive with normal allograft function. There were no biliary complications.


Assuntos
Carcinoma Hepatocelular , Neoplasias Hepáticas , Transplante de Fígado , Brasil , Carcinoma Hepatocelular/cirurgia , Feminino , Gastrectomia , Humanos , Masculino , Pessoa de Meia-Idade
9.
Nutr. hosp ; 39(1): 20-26, ene. - feb. 2022. tab, graf
Artigo em Inglês | IBECS | ID: ibc-209663

RESUMO

Introduction: patients with COVID-19 undergo changes in leukocyte count, respiratory disorders, and an increase in inflammatory substances. To improve the inflammatory condition, some nutrients can be used, including arginine, omega-3 fatty acids and nucleotides. This study aims to evaluate how oral immunonutrient supplements affects serum C-reactive protein (CRP) levels and lymphocyte count in patients with COVID-19. Methods: in this double-blind clinical trial, we randomized 43 adult patients with COVID-19 to receive a standard high-protein normocaloric supplement (control) or an immunonutrient-enriched supplement (experiment) for 7 days. The primary outcome was to evaluate changes in total lymphocyte count and serum level of CRP. The assessment of risk and nutritional status of these patients was also performed. Results: forty-three patients with mean age of 41.5 (± 1.8) years were followed up, 39.5 % of them women. The mean body mass index was 27.6 (± 0.8) kg/m² and 58.1 % had low nutritional risk. In the experiment group, there was a CRP reduction of 23.6 (± 7.5) mg/L, while in the control branch the decrease was 14.8 (± 12.1) mg/L (p = 0.002). There was an increase in lymphocytes in the experiment group (+367.5 ± 401.8 cells/mm³) and a reduction in the control group (-282.8 ± 327.8 cells/mm³), although there was no statistical significance (p = 0.369). Relative risk (RR) of treatment in reducing CRP by 30 % or more was 4.45 (p < 0.001; 95 % CI, 1.79-11.07). RR in increasing lymphocyte count by 30 % or more was 1.28 (p = 0.327; 95 % CI, 0.67-2.45). Conclusion: we conclude that immunonutrient supplements seem to reduce CRP levels more than standard high-protein normocaloric supplements (AU)


Introducción: los pacientes con COVID-19 sufren cambios en el recuento de leucocitos, trastornos respiratorios y aumento de sustancias inflamatorias. Para mejorar la condición inflamatoria se pueden usar algunos nutrientes, como la arginina, los ácidos grasos omega-3 y los nucleótidos. Este estudio tiene como objetivo evaluar cómo los suplementos de inmunonutrientes orales afectan a los niveles séricos de proteína C-reactiva (PCR) y al recuento de linfocitos en pacientes con COVID-19. Métodos: en este ensayo clínico doble ciego, aleatorizamos a 43 pacientes adultos con COVID-19 para recibir un suplemento normocalórico estándar alto en proteínas (control) o un suplemento enriquecido con inmunonutrientes (experimento) durante 7 días. El resultado primario fue evaluar los cambios en el recuento total de linfocitos y el nivel sérico de PCR. También se realizó la evaluación del riesgo y el estado nutricional de estos paciente. Resultados: cuarenta y tres pacientes con edad media de 41,5 (± 1,8) años fueron seguidos, el 39,5 % de ellos mujeres. El índice de masa corporal medio fue de 27,6 (± 0,8) kg/m² y el 58,1 % tenían bajo riesgo nutricional. En el grupo experimental hubo una reducción de la PCR de 23,6 (± 7,5) mg/L, mientras que en la rama de control la disminución fue de 14,8 (± 12,1) mg/L (p = 0,002). Hubo un aumento de linfocitos en el grupo experimental (+367,5 ± 401,8 células/mm³) y una reducción en el grupo de control (-282,8 ± 327,8 células/mm³), aunque no hubo significación estadística (p = 0,369). El riesgo relativo (RR) del tratamiento para reducir la PCR en un 30 % o más fue de 4,45 (p < 0,001; IC 95 %: 1,79-11,07). El RR en el aumento del recuento de linfocitos en un 30 % o más fue de 1,28 (p = 0,327; IC 95 %: 0,67-2,45). Conclusión: se concluye que los suplementos de inmunonutrientes parecen reducir los niveles de PCR más que los suplementos normocalóricos estándar altos en proteína (AU)


Assuntos
Humanos , Masculino , Feminino , Adulto , Infecções por Coronavirus/dietoterapia , Pneumonia Viral/dietoterapia , Suplementos Nutricionais , Proteína C-Reativa/análise , Linfócitos , Método Duplo-Cego , Estudos Prospectivos , Estudos Longitudinais
10.
Cancer Genet ; 262-263: 16-22, 2022 04.
Artigo em Inglês | MEDLINE | ID: mdl-34974289

RESUMO

Intrachromosomal amplification of chromosome 21 (iAMP21) occurs in ∼2% of B-cell acute lymphoblastic leukemia (ALL) and is considered to confer a poor prognosis. The relapse risk is associated with therapy intensity, suggesting that other somatic mutations may influence iAMP21-ALL prognosis. This abnormality is characterized by multiple copies of the RUNX1 gene in chromosome 21 and appears to arise through multiple breakage-fusion bridge cycles and chromothripsis. Rob(15;21) or a ring chromosome 21 have been associated with an increased risk for iAMP21-ALL, suggesting that constitutional genetic abnormalities may also drive leukemogenesis. Here we describe homozygous deletion of the SH2B3 gene, chromothripsis of chromosome 21, and a non-Robertsonian somatic t(15;21)(q25.3;q22.1) with NTRK3 gene rearrangement in an adolescent with iAMP21-B-ALL. Molecular cytogenetic studies detected iAMP21 with aCGH analysis revealing further genomic imbalances. The RT-qPCR analysis detected elevated expression levels of RUNX1 (68-fold) and reduced expression of CDK6 (0.057-fold). Studies with constitutive cells collected from mouth swabs showed that SH2B3 biallelic deletion was a somatic alteration occurring during clonal evolution. The identification of novel secondary genetic changes was valuable to discuss sporadic iAMP21 leukemogenic mechanisms. For the first time, we show a t(15;21)(q25.3;q22.1) with NTRK3 rearrangement in an adolescent with iAMP21-ALL.


Assuntos
Linfoma de Burkitt , Cromotripsia , Leucemia-Linfoma Linfoblástico de Células Precursoras , Cromossomos em Anel , Adolescente , Linfoma de Burkitt/genética , Cromossomos Humanos Par 21/genética , Subunidade alfa 2 de Fator de Ligação ao Core/genética , Homozigoto , Humanos , Leucemia-Linfoma Linfoblástico de Células Precursoras/genética , Células Precursoras de Linfócitos B , Deleção de Sequência , Translocação Genética
11.
Front Oncol ; 12: 1001163, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36844922

RESUMO

Neuroendocrine tumors are part of a heterogeneous group of tumors located in organs such as the gastrointestinal tract (GIT), lungs, thymus, thyroid, and adrenal glands. The most prevalent sites are the small intestine, cecal appendix, and pancreas. More than 50% of these tumors are associated with metastases at the time of diagnosis. Neuroendocrine tumors are classified according to the degree of cell differentiation and the histopathological proliferation index of the lesion. Neuroendocrine tumors can be well differentiated or poorly differentiated. G3 tumors are characterized by Ki-67 expression greater than 20% and can be either well differentiated (G3 NET) or poorly differentiated (G3 NEC). Neuroendocrine carcinoma (NEC G3) is subdivided into small-cell and large-cell types. When neuroendocrine tumors present clinical and compressive symptoms, carcinoid syndrome is evident. Carcinoid syndrome occurs when the tumor produces neuroendocrine mediators that cannot be metabolized by the liver due to either the size of the tumor or their secretion by the liver itself. Several therapeutic strategies have been described for the treatment of metastatic neuroendocrine tumors, including curative or palliative surgical approaches, peptide receptor radionuclide therapy, percutaneous therapy, systemic chemotherapy, and radiotherapy. Liver surgery is the only approach that can offer a cure for metastatic patients. Liver metastases must be completely resected, and in this context, orthotopic liver transplantation has gained prominence for yielding very promising outcomes in selected cases. The aim of this study is to review the literature on OLT as a form of treatment with curative intent for patients with gastroenteropancreatic neuroendocrine tumors with liver metastasis.

12.
Bone Marrow Transplant ; 56(12): 3042-3048, 2021 12.
Artigo em Inglês | MEDLINE | ID: mdl-34548627

RESUMO

Haploidentical hematopoietic-cell transplantation using post-transplant cyclophosphamide(Haplo-PTCy) is a feasible procedure in children with haematologic malignancies. However, data of a large series of children with acute leukaemia(AL) in this setting is missing. We analysed 144 AL Haplo-PTCy paediatric recipients; median age was 10 years. Patients had acute lymphoblastic(ALL; n = 86) or myeloblastic leukaemia(AML; n = 58) and were transplanted in remission(CR1: n = 40; CR2: n = 57; CR3+: n = 27) or relapse (n = 20). Bone marrow was the graft source in 57%; donors were father (54%), mother (35%), or sibling (11%). Myeloablative conditioning was used in 87%. Median follow-up was 31 months. At day +100, cumulative incidence (CI) of neutrophil recovery and acute GVHD (II-IV) were 94% and 40%, respectively. At 2-years, CI of chronic GVHD and relapse, were 31%, 40%, and estimated 2-year overall survival (OS), leukaemia-free survival (LFS) and graft-versus-host-relapse-free survival (GRFS) were 52%, 44% and 34% respectively. For patients transplanted in remission, positive measurable residual disease (MRD) prior to transplant was associated with decreased LFS (p = 0.05) and GRFS (p = 0.003) and increased risk of relapse (p = 0.02). Mother donor was associated with increased risk of chronic GVHD (p = 0.001), decreased OS (p = 0.03) and GRFS (p = 0.004). Use of PBSC was associated with increased risk of chronic GVHD (p = 0.04). In conclusion, achieving MRD negativity pre-transplant, avoiding use of mother donors and PBSC as graft source may improve outcomes of Haplo-PTCy in children with AL.


Assuntos
Doença Enxerto-Hospedeiro , Transplante de Células-Tronco Hematopoéticas , Leucemia Mieloide Aguda , Células-Tronco de Sangue Periférico , Criança , Ciclofosfamida/uso terapêutico , Feminino , Doença Enxerto-Hospedeiro/etiologia , Transplante de Células-Tronco Hematopoéticas/métodos , Humanos , Leucemia Mieloide Aguda/complicações , Mães , Recidiva Local de Neoplasia , Estudos Retrospectivos , Condicionamento Pré-Transplante/métodos , Transplante Haploidêntico/efeitos adversos
13.
Community Dent Health ; 38(3): 161-164, 2021 Aug 31.
Artigo em Inglês | MEDLINE | ID: mdl-34369114

RESUMO

This paper aims to explore the outcome of a telephone triage system used by different team members to run an Urgent Dental Care Hub (UDCH) during the first wave of the COVID-19 pandemic. It will also look at the adjustments made to the system because of the challenges faced. Data were collected from the telephone triage proforma and clinical notes of patients that were triaged from 2nd April to 10th June 2020. With 65% of telephone triaged and accepted patients receiving definitive treatment that alleviated the presenting complaint, the value of telephone triage is highlighted in streamlining an urgent dental care service during a viral pandemic. Public health competencies being illustrated: Dental public health intelligence, Developing and monitoring quality dental services.


Assuntos
COVID-19 , Pandemias , Assistência Odontológica , Humanos , Saúde Pública , SARS-CoV-2 , Telefone , Triagem
14.
Sci Rep ; 11(1): 17310, 2021 Aug 27.
Artigo em Inglês | MEDLINE | ID: mdl-34453069

RESUMO

We consider transport properties of a hybrid device composed by a quantum dot placed between normal and superconducting reservoirs, and coupled to a Majorana nanowire: a topological superconducting segment hosting Majorana bound states (MBSs) at the opposite ends. It is demonstrated that if highly nonlocal and nonoverlapping MBSs are formed in the system, the zero-bias Andreev conductance through the dot exhibits characteristic isoconductance profiles with the shape depending on the spin asymmetry of the coupling between the dot and the topological superconductor. Otherwise, for overlapping MBSs with less degree of nonlocality, the conductance is insensitive to the spin polarization and the isoconductance signatures disappear. This allows to propose an alternative experimental protocol for probing the nonlocality of the MBSs in Majorana nanowires.

15.
Langenbecks Arch Surg ; 406(8): 2621-2632, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-34117891

RESUMO

BACKGROUND: Pancreatoduodenectomy is the only treatment with a promise of cure for patients with pancreatic head adenocarcinoma, and a negative resection margin is an important factor related to overall survival. Complete clearance of the medial margin with removal of the so-called mesopancreas may decrease the recurrence rate after pancreatic resection. Here, we present some important information about the mesopancreas, total mesopancreas excision, and technical aspects to achieve negative resection margins. The area named mesopancreas is defined as the tissue located between the head of the pancreas and the superior mesenteric vessels and the celiac axis and consists of the nerve plexus, lymphatic tissue, and connective tissue. The superior mesenteric and celiac arteries define the border of the mesopancreas. En bloc resection of anterior and posterior pancreatoduodenal nodes, hepatoduodenal nodes, along the superior mesenteric artery nodes, pyloric nodes, and nodes along the common hepatic artery is necessary. CONCLUSIONS: Improved knowledge of the surgical anatomy of the region and technical refinements of excision of the mesopancreas along with standardized pathological examination are important to increase and to determine radical resection of pancreatic head cancer.


Assuntos
Neoplasias Pancreáticas , Cirurgiões , Humanos , Artéria Mesentérica Superior/cirurgia , Pâncreas/cirurgia , Neoplasias Pancreáticas/cirurgia , Pancreaticoduodenectomia
16.
Oper Dent ; 46(2): E98-E104, 2021 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-34157107

RESUMO

OBJECTIVE: The purpose of this study was to evaluate the influence of different illuminants on the perceptibility and acceptability of surface gloss variations and to determine limiting values. METHODS: Eight composite resin specimens and one human tooth specimen were polished to obtain composite resin specimens with different gloss units (GU) of 10, 20, 30, 40, 50, 60, 70, and 80 and a human tooth specimen of 80 GU. Sixty observers compared the surface gloss of the specimens in a light booth. For perceptibility testing, the specimens were randomly positioned two at a time. The acceptability of the gloss variation was determined by comparing the composite resin specimens with the tooth specimen. The observers answered specific questions to determine the level and perceptibility and acceptability limits of gloss variations. All analysis was done with two illuminants (D65 and fluorescent light) used randomly. Data were submitted to a nonlinear probit model and nonlinear probit regression estimation (α=0.05). RESULTS: Significant differences in illuminants were observed for perceptibility (p<0.001) and acceptability (p=0.045). The perceptibility limit for D65 was 7.0 GU and 6.8 GU for fluorescent illuminant. The acceptability limit for D65 was 34.2 GU and 37.1 GU for fluorescent illuminant. CONCLUSIONS: More accurate perceptibility and acceptability judgments of the surface gloss of composite resin were made when the specimens were illuminated with D65 light.


Assuntos
Resinas Compostas , Cor , Humanos , Teste de Materiais , Propriedades de Superfície
17.
Eur Neuropsychopharmacol ; 49: 93-100, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-33882433

RESUMO

The diagnosis and treatment of bipolar depression (BDep) poses complex clinical challenges for psychiatry. Proton magnetic resonance spectroscopy (1H-MRS) is a useful imaging tool for investigating in vivo levels of brain neuro-metabolites, critical to understanding the process of mood dysregulation in Bipolar Disorder. Few studies have evaluated longitudinal clinical outcomes in BDep associated with 1H-MRS metabolic changes. This study aimed to longitudinally assess brain 1H-MRS metabolites in the anterior cingulate cortex (ACC) correlated with improvement in depression (from BDep to euthymia) after lithium treatment in BDep patients versus matched healthy controls (HC). Twenty-eight medication-free BDep patients and 28 HC, matched for age and gender, were included in this study. All subjects were submitted to a 3-Tesla brain 1H-MRS scan in the ACC using a single-voxel (8cm3) PRESS sequence at baseline. At follow-up (6 weeks), 14 BDep patients repeated the exam in euthymia. Patients with current BDep had higher baseline Myo-inositol/Cr (mI/Cr) and Choline/Cr (Cho/Cr) compared to HC. After six weeks, mI/Cr or Cho/Cr levels in subjects that achieved euthymia no longer differed to levels in HC, while high Cho/Cr levels persisted in non-responders . Elevated ACC mI/Cr and Cho/Cr in BDep might indicate increased abnormal membrane phospholipid metabolism and phosphatidylinositol (PI) cycle activity. Return of mI/Cr and Cho/Cr to normal levels after lithium-induced euthymia suggests a critical regulatory effect of lithium targeting the PI cycle involved in mood regulation.


Assuntos
Transtorno Bipolar , Ácido Aspártico/metabolismo , Transtorno Bipolar/diagnóstico por imagem , Transtorno Bipolar/tratamento farmacológico , Encéfalo/metabolismo , Colina/metabolismo , Colina/farmacologia , Colina/uso terapêutico , Creatina/metabolismo , Giro do Cíngulo/metabolismo , Humanos , Inositol/metabolismo , Lítio/uso terapêutico , Espectroscopia de Prótons por Ressonância Magnética/métodos
18.
Int J Med Robot ; 17(3): e2238, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-33522077

RESUMO

BACKGROUND: Hepatocellular carcinoma (HCC) is a common indication for associating liver partition with portal vein ligation for staged hepatectomy (ALPPS). Robotic liver resection has been done for HCC, but robotic ALPPS is a rare procedure. METHODS: To present three cases of totally robotic ALPPS in cirrhotic patients with HCC. RESULTS: Three cirrhotic male patients with HCC underwent ALPPS; the mean age was 54.3 years. MELD score was ≤9 and tumour size between 90 and 140 mm. The mean hypertrophy of the future liver remnant after the first stage was 77.5% and no postoperative liver failure was reported. Mean operative time of stage 1 was 7:30 h and of stage 2 was 4:37 h, without blood transfusion. The mean hospital stay for the first stage was 10 days and for the second stage was 9.3 days. No postoperative complication was recorded. CONCLUSIONS: Robotic ALPPS in cirrhotic patients with HCC is safe and feasible.


Assuntos
Carcinoma Hepatocelular , Neoplasias Hepáticas , Procedimentos Cirúrgicos Robóticos , Carcinoma Hepatocelular/complicações , Carcinoma Hepatocelular/cirurgia , Hepatectomia , Humanos , Fígado/patologia , Fígado/cirurgia , Cirrose Hepática/complicações , Neoplasias Hepáticas/complicações , Neoplasias Hepáticas/cirurgia , Masculino , Pessoa de Meia-Idade
19.
J Endocrinol Invest ; 44(3): 609-619, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-32686043

RESUMO

PURPOSE: Data on endothelial derangements in patients with non-functioning adrenal incidentaloma (NFAI) are scarce. METHODS: We investigated if NFAI patients present clinical, biochemical and endothelial alterations compared to individuals without an adrenal lesion and also the associations among these variables. Forty-two NFAI and 40 controls were evaluated. NFAI diagnosis and controls were defined according to the current guidelines and based on a normal adrenal imaging exam, respectively. Body composition was evaluated by dual emission X-ray absorptiometry. Endothelial reactivity was assessed by two methods: tonometry (Endo-PAT®) and laser speckle contrast imaging (LSCI). RESULTS: There were no differences between groups regarding age, gender, ethnicity, smoking status, and statin use. The frequency of metabolic syndrome according to the International Diabetes Federation criteria was 69% and 57.9%, respectively in NFAI and controls (p = 0.36), whereas the atherosclerotic cardiovascular disease (ASCVD) risk was 63.4% and 66.7% (p = 0.81). The clinical, laboratory, and anthropometric characteristics, as well as body composition, were similar between the groups. Additionally, any differences between groups were observed on endothelial reactivity tests. Nevertheless, we noted an association between cortisol levels after 1 mg-dexamethosone suppression test (1 mg-DST) and the duration of post-occlusive reactive hyperemia tested on microcirculation (r = 0.30; p = 0.03). NFAI patients require more antihypertensive drugs to achieve blood pressure control (p = 0.04). The number of antihypertensive drugs used to control blood pressure correlated with cortisol levels after 1 mg-DST (r = 0.29; p = 0.03). CONCLUSIONS: Since both groups herein investigated had a high frequency of metabolic syndrome and ASCVD risk, it might explain similarities observed on endothelial reactivity. Nevertheless, prolonged reactive hyperemia response on microcirculation was correlated with cortisol levels under suppression.


Assuntos
Neoplasias das Glândulas Suprarrenais/complicações , Biomarcadores/sangue , Doenças Cardiovasculares/diagnóstico , Dexametasona/antagonistas & inibidores , Hidrocortisona/sangue , Hiperemia/diagnóstico , Síndrome Metabólica/diagnóstico , Doenças Cardiovasculares/sangue , Doenças Cardiovasculares/etiologia , Estudos de Casos e Controles , Estudos Transversais , Feminino , Seguimentos , Humanos , Hiperemia/sangue , Hiperemia/etiologia , Masculino , Síndrome Metabólica/sangue , Síndrome Metabólica/etiologia , Pessoa de Meia-Idade , Prognóstico
20.
J Dairy Sci ; 104(3): 2956-2965, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-33358791

RESUMO

The inclusion of grazing in dairy feeding systems can improve animal welfare and reduce feed costs and labor for animal care and manure management. This work aimed to evaluate the effects of including pearl millet herbage (Pennisetum glaucum 'Campeiro') as a supplement for dairy cows fed total mixed rations (TMR). The treatments included 100% TMR offered ad libitum (control, TMR100), 75% TMR ad libitum intake + access to grazing of a pearl millet pasture between the morning and afternoon milkings (7 h/d; pTMR75), and 50% TMR ad libitum intake + access to grazing of a pearl millet pasture between the morning and afternoon milkings (7 h/d; pTMR50). Nine multiparous Holstein and F1 Jersey × Holstein cows were distributed in a replicated 3 × 3 Latin square design with 3 periods of 21 d (a 16-d adaptation period and a 5-d measurement period). Cows in the TMR75 and TMR50 groups strip-grazed a pearl millet pasture with pre- and postgrazing sward height targets of 60 and 30 cm, respectively. The herbage dry matter intake (DMI) increased with decreasing mixed ration supplies, and the total DMI decreased linearly from 19.0 kg/d in the TMR100 group to 18.0 kg/d in the pTMR50 group. Milk production decreased linearly from 24.0 kg/d in the TMR100 group to 22.4 kg/d in the pTMR50 group, and energy-corrected milk (ECM) production decreased linearly from 26.0 kg/d to 23.6 kg/d. Enteric methane (CH4) emissions decreased linearly from 540 g/d in the TMR100 group to 436 g/d in the pTMR50 group, and CH4 yields (g/kg of DMI) tended to decrease linearly. The CH4 intensity was similar between treatments, averaging 20 g of CH4/kg of ECM. The inclusion of pearl millet herbage in the dairy cow diets decreased the total DMI and milk production to a small extent without affecting CH4 intensity (g/kg of ECM).


Assuntos
Metano , Pennisetum , Ração Animal/análise , Animais , Bovinos , Dieta/veterinária , Feminino , Lactação , Leite
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