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BACKGROUND AND OBJECTIVE: HPV (human papillomavirus) is the virus most often responsible for sexually transmitted infections. The burden of HPV-related diseases on hospital resources represents a major public health problem. The objective of this study was to quantify the lifetime economic burden of HPV-related diseases based on hospital resources from the perspective of National Health Service (NHS) in England. METHODS: Patients' data were extracted, anonymised and aggregated by NHS digital from Hospital Episode Statistics (HES) database of patients admitted in 2015 and followed for three years. Data on hospitalizations were identified according to the International Classification of Diseases (ICD-10 CM). Health Resource Group (HRG) tariffs and National Reference Costs were used to estimate the hospitalization costs of anal, cervical, genital, oropharyngeal cancers as well as anogenital warts and cervical dysplasia. RESULTS: A total of 19,296 hospitalized patients were included in the estimation model, (39% was male and 61% female. At admission, the average age was 60 and 50 years old, respectively). Life-time costs per patients diagnosed with oropharyngeal cancer were £16,911 (£17,142 for male and £16,334 for female), penile cancer £12,539, vaginal cancer £12,676, anal cancer £13.773 (£12,590 for male, £14,525 for female). Cervical cancer accounted for £12,721, whereas cervical dysplasia for £3932. Resource used for hospitalized patients with anogenital warts was equal to £872 (£884 and £856 for men and women, respectively). On average, outpatient accounted for 39% of the total lifetime costs. CONCLUSION: The results of this study highlight that a substantial amount of resources is utilized for the treatment of HPV-related diseases at hospital level in England. These measures have the potential to inform policy decisions to ensure an optimal use of the NHS resources.
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Hospitais , Infecções por Papillomavirus , Feminino , Humanos , Masculino , Custos e Análise de Custo , Papillomavirus Humano , Infecções por Papillomavirus/economia , Vacinas contra Papillomavirus , Medicina Estatal , Displasia do Colo do Útero , Neoplasias do Colo do Útero , VerrugasRESUMO
AIMS: To investigate the mechanism of action of N-acetylcysteine (NAC) in depressive symptoms in young individuals at familial risk for bipolar disorder. METHODS: We conducted an 8-week open label clinical trial of NAC 2400 mg/days in 15-24 years old depressed offspring of a bipolar I disorder parent, with baseline and endpoint proton magnetic resonance spectroscopy acquired within the left ventrolateral prefrontal cortex (VLPFC). RESULTS: Nine participants were enrolled and finished the study. NAC significantly improved depressive and anxiety symptom scores, and clinical global impression (all p < .001). There was a non-significant reduction in glutamate levels in the left VLPFC. Reduction in depressive symptom scores was positively associated with reduction in glutamate levels in the left VLPFC (p = .007). CONCLUSIONS: This pilot study suggests that NAC might be efficacious for depressive symptoms in at-risk youth, and that its mechanism of action involves the modulation of glutamate in the left VLPFC.
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Transtorno Bipolar , Acetilcisteína/farmacologia , Acetilcisteína/uso terapêutico , Adolescente , Transtorno Bipolar/diagnóstico , Transtorno Bipolar/tratamento farmacológico , Depressão/tratamento farmacológico , Ácido Glutâmico , Humanos , Projetos Piloto , Córtex Pré-Frontal , Adulto JovemRESUMO
Objective: To investigate whether poor antidepressant tolerability is associated with functional brain changes in children and adolescents of parents with bipolar I disorder (at-risk youth). Methods: Seventy-three at-risk youth (ages 9-20 years old) who participated in a prospective study and had an available baseline functional magnetic resonance imaging (fMRI) scan were included. Research records were reviewed for the incidence of adverse reactions related to antidepressant exposure during follow-up. The sample was divided among at-risk youth without antidepressant exposure (n=21), at-risk youth with antidepressant exposure and no adverse reaction (n=12), at-risk youth with antidepressant-related adverse reaction (n=21), and healthy controls (n=20). The fMRI task was a continuous performance test with emotional distracters. Region-of-interest mean activation in brain areas of the fronto-limbic emotional circuit was compared among groups. Results: Right amygdala activation in response to emotional distracters significantly differed among groups (F3,66 = 3.1, p = 0.03). At-risk youth with an antidepressant-related adverse reaction had the lowest amygdala activation, while at-risk youth without antidepressant exposure had the highest activation (p = 0.004). Conclusions: Decreased right amygdala activation in response to emotional distracters is associated with experiencing an antidepressant-related adverse reaction in at-risk youth. Further studies to determine whether amygdala activation is a useful biomarker for antidepressant-related adverse events are needed.
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Humanos , Criança , Adolescente , Adulto , Adulto Jovem , Transtorno Bipolar/tratamento farmacológico , Encéfalo/diagnóstico por imagem , Imageamento por Ressonância Magnética , Estudos Prospectivos , Emoções , Tonsila do Cerebelo , Antidepressivos/efeitos adversosRESUMO
OBJECTIVES: Previous studies and meta-analyses suggested that N-acetylcysteine (NAC) was superior to placebo in improving depression in bipolar disorder. However, more recent data, including two larger trials, found that NAC was no more effective than placebo. We conducted a meta-analysis to appraise the possible efficacy of NAC in treating bipolar depression. METHODS: A systematic review and meta-analysis of double-blind, placebo-controlled trials of NAC as a treatment augmentation strategy for bipolar depression was carried out in PubMed (1966-2020). We utilized random-effect analysis to evaluate improvement in depressive symptoms from baseline to endpoint as the primary efficacy measure. RESULTS: Six trials including 248 patients were included. Treatment augmentation with NAC showed a moderate effect size favoring NAC over placebo (d = 0.45, 95% C.I.: 0.06-0.84). There was substantial heterogeneity (I2 = 49%). Meta-regression analyses did not identify any moderator that might explain variation in heterogeneity, including baseline depressive symptom scores, mean NAC dose, or duration of study. CONCLUSIONS: Results from six clinical trials suggest that treatment augmentation with NAC for bipolar depression appears to be superior to placebo, with a moderate effect size, but a large confidence interval. Larger clinical trials, investigating possible moderating factors, such as NAC dose, treatment duration, baseline depression severity, or chronicity of illness, are warranted.
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Transtorno Bipolar , Acetilcisteína/uso terapêutico , Transtorno Bipolar/diagnóstico , Transtorno Bipolar/tratamento farmacológico , Método Duplo-Cego , Humanos , Ensaios Clínicos Controlados Aleatórios como Assunto , Resultado do TratamentoRESUMO
Objectives: To prospectively investigate whether baseline clinical characteristics and medication exposure predict development of major depressive disorder or bipolar disorder in offspring of parents with bipolar disorder. Methods: Youth aged 9-20 years with at least one biological parent with bipolar disorder and no prior history of mood or psychotic episodes (n=93) were prospectively evaluated and treated naturalistically during the study. Participants were divided into two groups: converters, defined as those who met DSM-IV criteria for a mood episode during follow-up (n=19); or non-converters (n=74). Logistic regression models were used to investigate associations between baseline clinical variables and medication exposure during follow-up and risk of developing a first mood episode (conversion). Results: Multivariate regression analyses showed that baseline anxiety disorders and subsyndromal mood disorders were associated with increased risk of conversion during follow-up. Adding medication exposure to the multivariate model showed that exposure to antidepressants during follow-up was associated with increased risk of conversion. Conclusions: Caution should be used when treating bipolar offspring with anxiety and/or emerging depressive symptoms using antidepressant agents, given the increased risk of developing a major mood disorder.
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Humanos , Criança , Adolescente , Adulto , Adulto Jovem , Transtorno Bipolar/induzido quimicamente , Transtorno Bipolar/tratamento farmacológico , Transtorno Depressivo Maior , Pais , Estudos Prospectivos , Manual Diagnóstico e Estatístico de Transtornos MentaisRESUMO
This research describes a solid-phase microextraction device using carbon nanomaterials supported on steel threads. The device was used to pre-concentrate and extract 24 pesticides in water. The carbon nanomaterials were obtained by a chemical vapor deposition (CVD) process, using methane and acetonitrile as carbon source. The different pesticides were separated, detected, and quantified using gas chromatography coupled to mass spectrometry (GC-MS). The system, optimized and validated in the laboratory, presented good results. Linearity was between 0.0007 and 50.00 µg L-1, with determination coefficients greater than 0.9. The detection and quantification limits were in the range of 0.0002-1.1309 µg L-1 and 0.0007-3.7320 µg L-1, respectively. The studied pesticides presented recovery values in the range of 70 ± 8 to 123 ± 18%. Carbon nanomaterials exhibited high thermal and mechanical resistance, as the same fiber could be used for approximately 300 extractions. The device was applied to analyze environmental water samples collected from the São Francisco river basin in Brazil and in the Chinampas in Mexico City.
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Gonadotropin-releasing hormone (GnRH) is a key molecule in the initiation of the hypothalamic-pituitary-gonadal axis. Thus, knowledge about GnRH may contribute to the effectiveness of species reproduction. Using a Neotropical tetra Astyanax altiparanae as a fish model species, the GnRH forms were characterized at the molecular level and the role of injected GnRHs in vivo was evaluated. The full-length complementary DNA (cDNA) sequences of preproGnRH2 (612 bp) and preproGnRH3 (407 bp) of A. altiparanae were obtained, and the GnRH1 form was not detected. The cDNA sequences of preproGnRH2 and preproGnRH3 were found to be conserved, but a change in the amino acid at position 8 of the GnRH3 decapeptide of A. altiparanae was observed. All the injected GnRHs stimulated lhß messenger RNA (mRNA) expression but not fshß mRNA expression, and only GnRH2 was able to increase maturation-inducing steroid (MIS) levels and possibly stimulate oocyte release. Furthermore, only GnRH2 was able to start the entire reproductive hormonal cascade and induce spawning.
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Characidae , Hormônio Liberador de Gonadotropina/genética , Hormônio Liberador de Gonadotropina/farmacologia , Reprodução/efeitos dos fármacos , Animais , Characidae/genética , Characidae/metabolismo , Characidae/fisiologia , Caraciformes/genética , Caraciformes/metabolismo , Clonagem Molecular , Feminino , Hormônio Liberador de Gonadotropina/metabolismo , Precursores de Proteínas/genética , Precursores de Proteínas/metabolismo , Ácido Pirrolidonocarboxílico/análogos & derivados , Ácido Pirrolidonocarboxílico/metabolismo , Reprodução/genética , Análise de Sequência de DNA/veterináriaRESUMO
AIM: We report a case of squamous carcinoma arising from a pilonidal sinus. CASE REPORT: Patient of 83 years old, that after 30 years had a recurrence of pilonidal sinus revealed by a sacral abscess studied with pelvic CT scan and MRI. After clinical investigation, traditional open surgical technique was performed and pathologic studies revealed a squamous carcinoma. The patient performed a new CT scan with persistence of disease, and a second surgical look with mass excision until the presacral fascia and V-Y flap was performed. Histological exami-nation was found to be positive for squamous carcinoma on the margin and the patient underwent adjuvant radiotherapy cycles with a close follow-up with evidence of free disease survival. He died after 5 years for old age. DISCUSSION: The incidence of carcinoma arising from a pilonidalis sinus is about 0.1% and the most important risk factor is represented by a chronic abscess from 20-30 years. In literature there are about 100 cases. Gold standard treatment is surgery with complete excision of the presacral fascia, while radiotherapy decrease the risk of recurrence. CONCLUSION: All cases reported in literature are submitted as case report. Sacro-coccyxal fistula should be treated early because chronic inflammation can determine neoplastic degeneration. Histological examination should be performed routinely. Gold standard is surgery with wide excision. There is no evidence about the gold standard for the reconstructive time.
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Carcinoma de Células Escamosas/complicações , Seio Pilonidal/complicações , Neoplasias Cutâneas/complicações , Idoso de 80 Anos ou mais , Carcinoma de Células Escamosas/patologia , Carcinoma de Células Escamosas/terapia , Evolução Fatal , Humanos , Imageamento por Ressonância Magnética , Masculino , Seio Pilonidal/patologia , Seio Pilonidal/cirurgia , Cirurgia de Second-Look , Neoplasias Cutâneas/patologia , Neoplasias Cutâneas/terapia , Tomografia Computadorizada por Raios XRESUMO
BACKGROUND: In recurrent and/or metastatic head and neck squamous cell cancer, Cetuximab is administered once a week, followed by weekly doses. We present the clinical rationale of a different schedule of maintenance Cetuximab and we estimate the potential economic benefits on the health care budget from a societal perspective in Italy. METHODS: A budget impact (BI) excel-based model was developed comparing a base case scenario of 100% weekly administration with a dose of 250 mg/m2 to an every-other-week (EOW) administration at 50% or 100% with a dose of 500 mg/m2 . RESULTS: In the EOW, 50% scenario it was calculated a cost reduction of 347 000 of which 70% attributable to indirect costs, increasing to 694 000 after 4 months. CONCLUSIONS: In our analysis, we showed that this simplified schedule could also reduce the costs of treatments both for the health system (direct costs) and for the society (indirect costs).
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Carcinoma de Células Escamosas/tratamento farmacológico , Cetuximab/administração & dosagem , Redução de Custos , Neoplasias de Cabeça e Pescoço/tratamento farmacológico , Recidiva Local de Neoplasia/tratamento farmacológico , Idoso , Carcinoma de Células Escamosas/patologia , Cetuximab/economia , Esquema de Medicação , Custos de Medicamentos , Feminino , Neoplasias de Cabeça e Pescoço/patologia , Humanos , Itália , Masculino , Pessoa de Meia-Idade , Invasividade Neoplásica/patologia , Recidiva Local de Neoplasia/patologia , Estadiamento de NeoplasiasRESUMO
Objective: To compare social skills and related executive functions among bipolar disorder (BD) patients with a family history of mood disorders (FHMD), BD patients with no FHMD and healthy control (HCs). Methods: We evaluated 20 euthymic patients with FHMD, 17 euthymic patients without FHMD, and 31 HCs using the Social Skills Inventory (SSI) and a neuropsychological battery evaluating executive function, inhibitory control, verbal fluency and estimated intelligence. Results: Both BD groups had lower SSI scores than controls. Scores for one subfactor of the social skills questionnaire, conversational skills and social performance, were significantly lower among patients with FHMD than among patients without FHMD (p = 0.019). Both groups of BD patients exhibited significant deficits in initiation/inhibition, but only BD patients with FHMD had deficits in verbal fluency, both compared to HC. There were no associations between social skills questionnaire scores and measures of cognitive function. Conclusion: Euthymic BD patients have lower social skills and executive function performance than HC. The presence of FHMD among BD patients is specifically associated with deficits in conversational and social performance skills, in addition to deficits in verbal fluency. Both characteristics might be associated with a common genetically determined pathophysiological substrate.
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Humanos , Masculino , Feminino , Adolescente , Adulto , Pessoa de Meia-Idade , Adulto Jovem , Transtorno Bipolar/psicologia , Cognição , Transtornos Cognitivos/psicologia , Transtornos do Humor/psicologia , Função Executiva , Habilidades Sociais , Comportamento Verbal/fisiologia , Transtorno Bipolar/genética , Indução de Remissão , Estudos de Casos e Controles , Transtornos Cognitivos/genética , Inteligência , Testes NeuropsicológicosRESUMO
AIM: The aim of our study is to focus on hTERT (human Telomerase Reverse Transcriptase) expression to identify tumoral tissue after a comparison to TP53 and KRAS. More than 85% of cancer cells contain genetic aberrations and also overexpression of hTERT, and, in fact, the promoter of hTERT characterizes all malignant cells. PATIENTS AND METHODS: Our sample is composed of 18 patients, including 10 with CRC that underwent surgical procedure and 8 patients without CRC, which represent the control group. The hTERT gene expression, KRAS and p53 were evaluated by methodical Real Time - PCR on RNA extracted from tumor tissues, peritumoral tissue and control cases. RESULTS: Within the CRC group the evaluation of the tumor tissue showed an increase of hTERT expression with a statistical significance (> 0.1) in 5 of these, also associated with substantial increase of KRAS (> 0.2). The peritumoral tissue assessment showed important increase in KRAS in 4 patients (> 0.2), while hTERT is not found to be particularly increased. The value of p53 did not show any particular significance (<0.1). DISCUSSION: The analysis of our data leads us to consider that the increase of hTERT is evident in patients suffering from CRC and that some of them will become significant in relation to the increase of KRAS and independent of p53. In peritumoral tissues, however, KRAS increases considerably, instead hTERT maintains a low concentration and this is compatible with the cellular evolution of the neoplastic tissue adjacent to the tumor. CONCLUSIONS: hTERT could be used for diagnosis and prognosis in the future, to be able to identify the risk of tumor progression and to set up an adequate therapy.
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Neoplasias Colorretais/enzimologia , Telomerase/fisiologia , Idoso , Neoplasias Colorretais/metabolismo , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Telomerase/biossínteseRESUMO
Objective: Unaffected relatives of bipolar disorder (BD) patients have been investigated for the identification of endophenotypes in an attempt to further elucidate the pathophysiology of the disease. Brain-derived neurotrophic factor (BDNF) is considered to be implicated in the pathophysiology of BD, but its role as an endophenotype has been poorly studied. We investigated abnormal serum BDNF levels in BD patients, in their unaffected relatives, and in healthy controls. Methods: BDNF levels were obtained from 25 DSM-IV bipolar I disorder patients, 23 unaffected relatives, and 27 healthy controls. All BD patients were in remission. The unaffected subjects were first-degree relatives of the proband who had no lifetime DSM-IV diagnosis of axis I disorder. BDNF serum levels were determined by sandwich ELISA using monoclonal BDNF-specific antibodies. Results: There were no statistical differences in BDNF levels among BD patients, relatives, and healthy controls. Conclusion: Serum BDNF levels may not indicate high genetic risk for BD, possibly acting as state markers rather than trait markers of the disease.
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Humanos , Masculino , Feminino , Adulto , Adulto Jovem , Transtorno Bipolar/sangue , Família , Fator Neurotrófico Derivado do Encéfalo/sangue , Escalas de Graduação Psiquiátrica , Valores de Referência , Transtorno Bipolar/genética , Ensaio de Imunoadsorção Enzimática , Biomarcadores/sangue , Estudos de Casos e Controles , Fatores de Risco , Análise de Variância , Endofenótipos/sangueRESUMO
Colonic lipomas larger than 2 cm in diameter are likely to be symptomatic. In some cases a complication is the first clinical sign. Massive lower intestinal bleeding or obstruction, acute bleeding, prolapse or perforation or, rarely, acute intussusception with intestinal obstruction require urgent surgery. Diagnosis is often made following colonoscopy, which can also have a therapeutic role. Imaging procedures such as CT has a secondary role. Patients with small asymptomatic colonic lipomas need regular follow up. For larger (diameter > 2 cm) and/or symptomatic lipomas, resection should be considered, although the choice between endoscopic or surgical resection remains controversial. We believe that even lipomas > 2 cm can safely be removed by endoscopic resection. If surgery is indicated, we consider laparoscopy to be the ideal approach in all patients for whom minimally invasive surgery is not contraindicated.
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Colectomia/métodos , Neoplasias do Colo/cirurgia , Hemorragia Gastrointestinal/cirurgia , Neoplasias do Íleo/cirurgia , Valva Ileocecal/cirurgia , Intussuscepção/cirurgia , Laparoscopia , Lipoma/cirurgia , Adulto , Idoso , Neoplasias do Colo/complicações , Neoplasias do Colo/diagnóstico , Colonoscopia , Feminino , Seguimentos , Hemorragia Gastrointestinal/diagnóstico , Hemorragia Gastrointestinal/etiologia , Humanos , Neoplasias do Íleo/complicações , Neoplasias do Íleo/diagnóstico , Valva Ileocecal/patologia , Intussuscepção/diagnóstico , Intussuscepção/etiologia , Lipoma/complicações , Lipoma/diagnóstico , Masculino , Pessoa de Meia-Idade , Neoplasias do Colo Sigmoide/cirurgia , Resultado do Tratamento , Cirurgia VídeoassistidaRESUMO
Em 22 anos de construção do Sistema Único de Saúde, Belo Horizonte apresenta importantes avanços, seja na ampliação do acesso aos serviços de saúde, seja na construção de uma rede de atenção integral para seus habitantes. A Estratégia da Saúde da Família, como o grande eixo estruturador da Atenção Primária à Saúde, foi implementada com os objetivos de coordenar o cuidado e fortalecer os vínculos dos usuários com os profissionais de saúde. Entretanto, desafios para organização e qualificação de fluxos e processos, além de questões inerentes ao financiamento ainda se fazem presentes. O presente artigo procurou descrever as especificidades dessa construção do Sistema Único de Saúde no espaço urbano do município, com destaque para a presente organização e gestão dos serviços de saúde, o planejamento e as proposições para os desafios atuais..
In 22 years since the construction of Unified Health System, Belo Horizonte presents important advances, either expanding access to health services, either on construction of an integral attention network for its residents. The Family´s Health Strategy, as the major structural axis of Primary Health Care, was implemented aiming to coordinate the care and to consolidate ties between users and health professionals. However, challenges for organization and qualification of process flow, besides issues inherent in financing still are present. This article focused on description of the specificities of this Unified Health System construction into urban space from county highlighting the present organization and management of health services, planning and propositions to current challenges. .
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Política de Saúde , Atenção Primária à Saúde , Planejamento Estratégico , Sistema Único de SaúdeRESUMO
Recent studies show that interaction between LN (heterotrimeric protein formed by a3/b3/g2 chains) and cancer cells plays an important role in tumor invasion, also in colorectal cancer. The overall survival was significantly worse in patients with free peritoneal cancer cells(FPTCs): detection of FPTCs after curative surgery is a challenge, because could improve staging and prognosis. Peritoneal citology is the current standard procedure with very low sensivity. We aimed to study the expression of LN5 in the peritoneal lavage of colorectal cancer pts and in controls with semiquantitative reverse trancriptase-polymerase chain reaction (RT-PCR). LN-5 overexpression was evaluated observing PCR- products intensity at electrophoresis: high intensity is correlated to overexpression. Pre and post-operative peritoneal lavages of 30 pts with colorectal cancer (13M;17F), with median age of 69 (58-84), and of 10 controls, were analyzed by conventional cytology and a semiquantitative RT-PCR. No cancer pts showed pre/postoperative negative cytology and did not express LN-5. In cancer pts. cytology was positive in 2 pts in pre/postoperative lavage. LN-5 overexpression was observed in 56,6% preoperatively and in 76,6% postoperatively. LN-5 g 2 chain was most frequent chain. Our study suggests a relationship between LN-5 and FPTCs, as shown by the low expression of lamimine in controls. LN-5 could be a useful marker to identify a subgroup of early-stage patients at increased risk of recurrence; moreover, mortality seems to correlated to LAMB3 chain. The diagnostic accuracy could be improved by using a quantitative RT-PCR or western-blot and detecting serum laminine. Finally, to validate these findings a larger number of pts with follow-up study is required.
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Moléculas de Adesão Celular/metabolismo , Neoplasias Colorretais/metabolismo , Laminina/metabolismo , Lavagem Peritoneal , Idoso , Idoso de 80 Anos ou mais , Biomarcadores Tumorais/metabolismo , Neoplasias Colorretais/cirurgia , Humanos , Pessoa de Meia-Idade , Reação em Cadeia da Polimerase Via Transcriptase Reversa , CalininaRESUMO
Peritoneal adhesions will form as a consequence of all types of trauma of the peritoneal serosa, be they mechanical, thermal, chemical, infective, or ischemic. Any stimulation induces deposition on the serosa of a fibrin-rich exudate that results in a weaker or stronger adhesion of the viscera to other viscera or to the wall parietal peritoneum. These adhesions are mostly temporary and are eliminated by the action of the fibrinolytic agents present in the peritoneum. In optimal conditions, repair of the injured peritoneum occurs thanks to early mesothelial proliferation over the entire damaged surface, with little production of permanent fibrous adhesions. Some traumatic events are more prone than others to inhibit fibrinolysis through the production of cytokines, that trigger the production of plasminogen inhibitors, thus determining a greater number of more tenacious adhesions. Some stimuli producing postoperative adhesions are iatrogenic in nature and can be individuated and corrected to reduce the production of such adhesions and avoid the onset of adhesion syndromes.
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Doenças Peritoneais/fisiopatologia , Aderências Teciduais/fisiopatologia , Biópsia , Epitélio , Fibrinólise/fisiologia , Humanos , Doença Iatrogênica , Imuno-Histoquímica , Doenças Peritoneais/diagnóstico , Doenças Peritoneais/etiologia , Doenças Peritoneais/patologia , Doenças Peritoneais/prevenção & controle , Peritônio/patologia , Plasminogênio/antagonistas & inibidores , Plasminogênio/fisiologia , Complicações Pós-Operatórias , Fatores de Tempo , Aderências Teciduais/diagnóstico , Aderências Teciduais/etiologia , Aderências Teciduais/patologia , Aderências Teciduais/prevenção & controleRESUMO
OBJECTIVE: In bone injury, repair results in local increased vascularity and bone marrow remodeling. Characterizing the vascular and metabolic imaging patterns of the proximal femur following an intertrochanteric osteotomy may help clinicians decide proper management of the patient. Our objective was to measure Doppler sonography and scintigraphy interval changes in the proximal femur following intertrochanteric osteotomy and compare imaging and histomorphometric measurements in the late post-operative stage (6 weeks after surgery) in a rabbit model of bone injury. MATERIALS AND METHODS: Both hips of 12 adult rabbits were imaged with power Doppler sonography and scintigraphy prior to and after (7 days and 6 weeks) unilateral osteotomy. Accuracy of the imaging methods was evaluated using hip operative status and histomorphometric results (vascular fractional area and number of vessels per area unit) as reference standard measures. RESULTS: A significant difference in the mean number of pixels was noted between operated and non-operated femura in late post-operative power Doppler examinations (P=0.049). Although without reaching statistical significance, the AUC of Doppler measurements (AUC=0.99) was numerically greater than the AUC of scintigraphy measurements (AUC=0.857+/-0.099) (P=0.15) in differentiating proximal femura with regard to their fractional vascular areas in the late post-operative stage. In contrast, scintigraphy tended to perform better (AUC=0.984+/-0.022) than Doppler ultrasound (AUC=0.746+/-0.131) to demonstrate the vascularity intensity per area unit (P=0.07) in the late stage. CONCLUSION: Our results warrant further investigation to determine the value of different imaging modalities for assessment of pathologic changes following hip surgery. Power Doppler sonography demonstrated larger AUCs (representing higher accuracy) for the discrimination of vascular fractional areas and scintigraphy, for discrimination of the number of vessels per area unit.
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Doenças Ósseas/diagnóstico por imagem , Fêmur , Articulação do Quadril , Osteotomia/métodos , Animais , Remodelação Óssea/fisiologia , Modelos Animais de Doenças , Epifise Deslocada/diagnóstico por imagem , Fêmur/diagnóstico por imagem , Articulação do Quadril/diagnóstico por imagem , Doença de Legg-Calve-Perthes/diagnóstico por imagem , Período Pós-Operatório , Coelhos , Cintilografia , Ultrassonografia Doppler/métodosRESUMO
OBJECTIVE: In bone injury, repair results in local increased vascularity and bone marrow remodeling. Characterizing the vascular and metabolic imaging patterns of the proximal femur following an intertrochanteric osteotomy may help clinicians decide proper management of the patient. Our objective was to measure Doppler sonography and scintigraphy interval changes in the proximal femur following intertrochanteric osteotomy and compare imaging and histomorphometric measurements in the late post-operative stage (6 weeks after surgery) in a rabbit model of bone injury. MATERIALS AND METHODS: Both hips of 12 adult rabbits were imaged with power Doppler sonography and scintigraphy prior to and after (7 days and 6 weeks) unilateral osteotomy. Accuracy of the imaging methods was evaluated using hip operative status and histomorphometric results (vascular fractional area and number of vessels per area unit) as reference standard measures. RESULTS: A significant difference in the mean number of pixels was noted between operated and non-operated femura in late post-operative power Doppler examinations (P=0.049). Although without reaching statistical significance, the AUC of Doppler measurements (AUC=0.99) was numerically greater than the AUC of scintigraphy measurements (AUC=0.857±0.099) (P=0.15) in differentiating proximal femura with regard to their fractional vascular areas in the late post-operative stage. In contrast, scintigraphy tended to perform better (AUC=0.984±0.022) than Doppler ultrasound (AUC=0.746±0.131) to demonstrate the vascularity intensity per area unit (P=0.07) in the late stage. CONCLUSION: Our results warrant further investigation to determine the value of different imaging modalities for assessment of pathologic changes following hip surgery. Power Doppler sonography demonstrated larger AUCs (representing higher accuracy) for the discrimination of vascular fractional areas and scintigraphy, for discrimination...
OBJETIVO: Regeneração em casos de lesão óssea resulta em aumento da vascularização local e remodelamento da medula óssea adjacente. A caracterização imagenológica de padrões vasculares e metabólicos no fêmur proximal após uma osteotomia intertrocantérica pode auxiliar ortopedistas a decidirem qual a terapêutica mais apropriada. O objetivo deste estudo foi avaliar as alterações temporais observadas por ultra-sonografia Doppler e cintilografia no fêmur proximal após a realização de uma osteotomia intertrocantérica; e comparar achados imagenológicos e histomorfométricos no estágio pós-operatório tardio (6 semanas após a cirurgia) num modelo animal de lesão óssea. MATERIAIS AND MÉTODOS: Ambos os quadris de 12 coelhos adultos foram examinados por ultra-sonografia power Doppler e cintilografia antes e após (7 dias e 6 semanas) uma osteotomia unilateral. A acurácia dos métodos de imagem foi avaliada usando-se o status operatório dos quadris and os resultados histomorfométricos (área vascular fracional e número de vasos/unidade de área) como medidas de referência. RESULTADOS: Uma diferença significativa foi observada entre o número médio de pixels presentes no fêmur proximal operado e não-operado ao exame de power Doppler obtido no estágio pós-operatório tardio (P=0.049). Embora ser atingir significância estatística, a área abaixo da curva ("area-under-the-curve") dos exames de power Doppler (AUC=0.99) for numericamente superior à área abaixo da curva dos exames de cintilografia (AUC= 0.857±0.099) (P=0.15) para diferenciar fêmures proximais com relação a suas áreas vasculares fracionais no estágio pós-operatório tardio. Ao contrário, a cintilografia tendeu a apresentar uma "performance" diagnóstica superior (AUC=0.984±0.022) em relação ao Doppler (AUC=0.746±0.131) para demonstrar a quantidade de vasos por unidade de área (P=0.07) no estágio tardio. CONCLUSÃO: Nossos resultados despertam a importância de continuar-se investigando...
Assuntos
Animais , Coelhos , Doenças Ósseas , Doenças Ósseas , Fêmur , Articulação do Quadril , Osteotomia/métodos , Remodelação Óssea/fisiologia , Modelos Animais de Doenças , Epifise Deslocada , Epifise Deslocada , Fêmur , Fêmur , Articulação do Quadril , Articulação do Quadril , Doença de Legg-Calve-Perthes , Doença de Legg-Calve-Perthes , Período Pós-Operatório , Ultrassonografia Doppler/métodosRESUMO
BACKGROUND: Although lung cancer staging has been recently reviewed, a significant number of recurrences and an increased incidence of mortality is common also in the initial stages of the disease. All that is probably due to disease staging underestimation and emphasizes that an exact system of staging cannot be considered a stand-alone prognostic and therapeutic index. METHODS: Between October 2000 and November 2001, 37 patients have undergone surgical intervention for NSCLC in our Surgical Unit; 28 of them were male (75.7%), 9 female (24.3%), aged between 55 and 70. Neither cancer-related pleural effusion, nor mediastinal lymphoadenopathy had been detected under Rx and TC inspection in any patient. RESULTS: Pre-surgical pleural washing (PLC), which defines the positiveness of the cytological result (D+), in 17 patients (45.9%) was positive, in the remaining 20 (54.1%) negative. The positiveness of PLC was 35.3% (6/17) and 64.7% (11/17) in the initial stage of T (T1 and T2) and in the advanced stage (T3 and T4) respectively. CONCLUSIONS: On the basis of personal experience, the authors, suggest that pre-surgical resection pleural washing searching premature microscopic pleural disseminations in NSCLC-affected patients should become an important prognostic factor for the disease outcome. Moreover, they emphasize how this procedure is easy, with a small increase in the surgical intervention time, and nearly costless.