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1.
Lancet ; 403(10443): 2504-2519, 2024 Jun 08.
Artigo em Inglês | MEDLINE | ID: mdl-38795716

RESUMO

BACKGROUND: Patients with hidradenitis suppurativa have substantial unmet clinical needs and scarce therapeutic options. We aimed to assess the efficacy and safety of bimekizumab, a monoclonal IgG1 antibody that selectively inhibits interleukin (IL)-17F and IL-17A, in patients with moderate-to-severe hidradenitis suppurativa. METHODS: BE HEARD I and II were two identically designed, 48-week randomised, double-blind, placebo-controlled, multicentre phase 3 trials. Patients aged 18 years or older with moderate-to-severe hidradenitis suppurativa were randomly assigned 2:2:2:1 using interactive response technology (stratified by worst Hurley Stage at baseline and baseline systemic antibiotic use) to receive subcutaneous bimekizumab 320 mg every 2 weeks; bimekizumab 320 mg every 2 weeks to week 16, then every 4 weeks to week 48; bimekizumab 320 mg every 4 weeks to week 48; or placebo to week 16, then bimekizumab 320 mg every 2 weeks. The primary outcome was an hidradenitis suppurativa clinical response of at least 50%, defined as a reduction in total abscess and inflammatory nodule count of at least 50% from baseline with no increase from baseline in abscess or draining tunnel count (HiSCR50) at week 16. Efficacy analyses included all randomly assigned study patients (intention-to-treat population). Safety analyses included all patients who received at least one full or partial dose of study treatment in the safety set, and of bimekizumab in the active-medication set. These trials are registered at ClinicalTrials.gov, NCT04242446 and NCT04242498, and both are completed. FINDINGS: Patients for BE HEARD I were recruited from Feb 19, 2020, to Oct 27, 2021, and 505 patients were enrolled and randomly assigned. Patients for BE HEARD II were recruited from March 2, 2020, to July 28, 2021, and 509 patients were enrolled and randomly assigned. The primary outcome at week 16 was met in the group who received bimekizumab every 2 weeks using modified non-responder imputation; higher responder rates were observed with bimekizumab versus placebo in both trials: 138 (48%) of 289 patients versus 21 (29%) of 72 patients in BE HEARD I (odds ratio [OR] 2·23 [97·5% CI 1·16-4·31]; p=0·0060) and 151 (52%) of 291 patients versus 24 (32%) of 74 patients in BE HEARD II (2·29 [1·22-4·29]; p=0·0032). In BE HEARD II, HiSCR50 was also met in the group who were administered bimekizumab every 4 weeks (77 [54%] of 144 vs 24 [32%] of 74 with placebo; 2·42 [1·22-4·80]; p=0·0038). Responses were maintained or increased to week 48. Serious treatment-emergent adverse events were reported in 40 (8%) patients in BE HEARD I and in 24 (5%) patients in BE HEARD II treated with bimekizumab over 48 weeks. The most frequently reported treatment-emergent adverse events to week 48 were hidradenitis in both trials, in addition to coronavirus infection and diarrhoea in BE HEARD I, and oral candidiasis and headache in BE HEARD II. One death was reported across the two trials, and was due to congestive heart failure in a patient with substantial cardiovascular history treated with bimekizumab every 2 weeks in BE HEARD I (considered unrelated to bimekizumab treatment by the investigator). No new safety signals were observed. INTERPRETATION: Bimekizumab was well tolerated by patients with hidradenitis suppurativa and produced rapid and deep clinically meaningful responses that were maintained up to 48 weeks. Data from these two trials support the use of bimekizumab for the treatment of patients with moderate-to-severe hidradenitis suppurativa. FUNDING: UCB Pharma.


Assuntos
Anticorpos Monoclonais Humanizados , Hidradenite Supurativa , Humanos , Hidradenite Supurativa/tratamento farmacológico , Método Duplo-Cego , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Resultado do Tratamento , Anticorpos Monoclonais Humanizados/administração & dosagem , Anticorpos Monoclonais Humanizados/efeitos adversos , Anticorpos Monoclonais Humanizados/uso terapêutico , Índice de Gravidade de Doença , Interleucina-17/antagonistas & inibidores
2.
BMC Infect Dis ; 24(1): 615, 2024 Jun 21.
Artigo em Inglês | MEDLINE | ID: mdl-38907220

RESUMO

OBJECTIVE: To determine the relationship of Neutrophil Lymphocyte Ratio (NLR), Monocyte Lymphocyte Ratio (MLR), and Neutrophil Monocyte Ratio (NMR) with treatment response in Pulmonary Tuberculosis (PTB) patients during intensive phase treatment (IPT). METHODS: This analytical cross-sectional study was conducted at Ojha Institute of Chest Diseases (OICD), Dow University of Health Sciences, from February to December 2021. 100 patients were enrolled using purposive sampling technique. Both male and female of age 18 and above, rifampicin sensitive newly diagnosed cases of PTB by Acid Fast Bacilli (AFB) microscopy and Gene Xpert MTB/RIF were included. SPSS version 26 was used to analyze data. Numerical data was expressed in median and interquartile range and categorical data was expressed in frequencies and percentages. RESULTS: Out of total 100 patients, 81% (n = 81) showed treatment response with negative AFB Sputum Smear Microscopy (SSM) after 2nd month. Out of 81% (n = 81) of the patients who achieved treatment response, 83.9% (n = 68) also had decreased NLR, 85.2% (n = 69) had decreased MLR and 83.9% (n = 68) had decreased NMR from baseline. However 19% (n = 19) did not achieved treatment response with positive AFB SSM after 2nd month of ATT (Anti tuberculosis treatment), among them 10.52% (n = 2) were INH resistant with no decrease in all the ratios after 2nd month. CONCLUSION: Leukocyte ratios decreased significantly from baseline as PTB was treated in patients who achieved treatment response with negative AFB SSM after two months of ATT and hence these ratios could be used as markers to monitor the treatment response.


Assuntos
Antituberculosos , Linfócitos , Monócitos , Neutrófilos , Tuberculose Pulmonar , Humanos , Masculino , Feminino , Tuberculose Pulmonar/tratamento farmacológico , Tuberculose Pulmonar/sangue , Tuberculose Pulmonar/microbiologia , Adulto , Estudos Transversais , Pessoa de Meia-Idade , Antituberculosos/uso terapêutico , Resultado do Tratamento , Adulto Jovem , Escarro/microbiologia , Adolescente , Rifampina/uso terapêutico
3.
J Cell Mol Med ; 26(1): 123-132, 2022 01.
Artigo em Inglês | MEDLINE | ID: mdl-34894055

RESUMO

In normal pregnancy, hepatic metabolism adaptation occurs with an increase in lipid biosynthesis. Placental shedding of syncytiotrophoblast-derived extracellular vesicles (STBEVs) into the maternal circulation constitutes a major signalling mechanism between foetus and mother. We investigated whether STBEVs from normal pregnant women might target liver cells in vitro and induce changes in lipid synthesis. This study was performed at the Nuffield Department of Women's & Reproductive Health, Oxford, UK. STBEVs were obtained by dual-lobe placental perfusion from 11 normal pregnancies at term. Medium/large and small STBEVs were collected by ultracentrifugation at 10,000g and 150,000g, respectively. STBEVs were analysed by Western blot analysis and flow cytometry for co-expression of apolipoprotein-E (apoE) and placental alkaline phosphatase (PLAP). The uptake of STBEVs by liver cells and the effect on lipid metabolism was evaluated using a hepatocarcinoma cell line (HepG2 cells). Data were analysed by one-way ANOVA and Student's t test. We demonstrated that: (a) STBEVs carry apoE; (b) HepG2 cells take up STBEVs through an apoE-LDL receptor interaction; (c) STBEV incorporation into HepG2 cells resulted in (i) increased cholesterol release (ELISA); (ii) increased expression of the genes SQLE and FDPS (microarray) involved in cholesterol biosynthesis; (iii) downregulation of the CLOCK gene (microarray and PCR), involved in the circadian negative control of lipid synthesis in liver cells. In conclusion, the placenta may orchestrate the metabolic adaptation of the maternal liver through release of apoE-positive STBEVs, by increasing lipid synthesis in a circadian-independent fashion, meeting the nutritional needs of the growing foetus.


Assuntos
Vesículas Extracelulares , Trofoblastos , Apolipoproteínas/metabolismo , Apolipoproteínas E/metabolismo , Vesículas Extracelulares/metabolismo , Feminino , Humanos , Lipídeos , Fígado , Placenta/metabolismo , Gravidez , Trofoblastos/metabolismo
4.
Pediatr Neurosurg ; 56(4): 385-391, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34077932

RESUMO

BACKGROUND: Spinal arteriovenous malformations (AVMs) are a cause of 20-30 of all spinal vascular malformation. The treatment option for the AVM depends upon the type of AVM. Here, we present a case series to discuss the type, management, and post-operative conclusion of the spinal AVMs. METHOD: Four patients with spinal AVMs were retrospectively reviewed. All 4 patients were with a nidus-type AVM. Treatment for all patients required embolization. Clinical features, imaging, treatment, and clinical results were observed. All 4 patient's clinical outcome was assessed using the Modified Ranked Scale. RESULT: The follow-up after management showed that all four-patient recovered without any residual deficit. All four-patient scored zero (0) on the Modified Ranked Scale. CONCLUSION: Pediatric spinal AVMs are rare and require complex multimodal approach to achieve favorable outcomes.


Assuntos
Malformações Arteriovenosas , Embolização Terapêutica , Procedimentos Endovasculares , Malformações Arteriovenosas Intracranianas , Malformações Arteriovenosas/diagnóstico por imagem , Malformações Arteriovenosas/cirurgia , Criança , Humanos , Estudos Retrospectivos , Resultado do Tratamento
5.
BMC Oral Health ; 21(1): 562, 2021 11 03.
Artigo em Inglês | MEDLINE | ID: mdl-34732191

RESUMO

BACKGROUND: Matrix metalloproteinases (MMPs) catalyzes the degradation of the extracellular matrix components and have a major role in many physiological processes including wound healing. In the current study, we examined the correlation of baseline MMPs 1, 2, 7, and 9 expressions with periapical wound healing after surgical endodontic treatment. METHODS: 27 patients aged between 15 and 57 years presenting with chronic apical periodontitis or chronic apical abscess of an anterior tooth with previously attempted or failed root canal treatment were included in this study. During surgical endodontic treatment, tissue from the periapical lesion sample was collected and used for gross histopathological analysis as well as mRNA expression analysis of MMPs 1, 2, 7, and 9. Patients were recalled for follow-up after 6  months to evaluate the healing status both clinically and radiographically and healing was correlated with baseline MMP expression. RESULTS: Out of 27 patients, healing was observed in 15 patients at the end of 6 months, and in 21 patients after 12 months.. Six patients showed no healing even after 12 months. Analysis of baseline MMP 1, 2, 7, and 9 expression levels with healing status showed the mean relative expression of MMP2 and MMP9 to be considerably increased in the non-healing group as compared to the healing group. CONCLUSION: Overexpression of MMP2 and MMP9 may be considered as a potential prognostic biomarker for periapical wound healing after surgical endodontic treatment. However, further studies are desirable to establish its precise relationship with periapical wound healing.


Assuntos
Granuloma Periapical , Periodontite Periapical , Adolescente , Adulto , Humanos , Metaloproteinases da Matriz/genética , Pessoa de Meia-Idade , Granuloma Periapical/cirurgia , Periodontite Periapical/cirurgia , Tratamento do Canal Radicular/efeitos adversos , Cicatrização , Adulto Jovem
6.
J Pak Med Assoc ; 70(2): 252-258, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-32063616

RESUMO

OBJECTIVE: To assess work-life balance among medical residents at a tertiary hospital. METHODS: The cross-sectional study was conducted from September to December 2016 at a private-sector tertiary care hospital in Karachi, and comprised medical residents working at the facility. A standardised, self-administered questionnaire was developed on the basis of Canadian Mental Health quiz and a study in literature. The questions aimed at assessing satisfaction with work as well as emotional and personal life of residents in various medical and surgical specialties. SPSS 20 was used for data analysis. RESULTS: Of the 275 residents, 129(46.9%) were males and 146(53.1%) were females. The overall mean age was 28.19±2.194 years. Of the total, 13(4.7%) participants thought they had work-life balance; 165(60%) felt their job had negatively affected their private lives; 118(42.9%) felt worn out; 109(39.6%) expressed moderate dissatisfaction with work-related factors; 119(43.3%) were dissatisfied with life outside work; and 93(33.8%) were dissatisfied their health. CONCLUSIONS: There was minimal work-life balance among the residents.


Assuntos
Internato e Residência , Satisfação no Emprego , Medicina , Satisfação Pessoal , Especialidades Cirúrgicas , Equilíbrio Trabalho-Vida , Adulto , Feminino , Nível de Saúde , Humanos , Masculino , Paquistão , Centros de Atenção Terciária
7.
Childs Nerv Syst ; 35(3): 541-545, 2019 03.
Artigo em Inglês | MEDLINE | ID: mdl-30353305

RESUMO

INTRODUCTION: Common sites of occurrence of extraosseous Ewing's sarcoma include the soft tissues and bones of the lower extremity, 12 paravertebral, and retroperitoneal regions. Primary intracranial Ewing's sarcoma/pPNET is usually intraparenchymal located 13 when supratentorially, and an extraaxial epidural tumor radiographically mimicking a meningioma is extremely rare. CASE PRESENTATION: A 20-year14 old male presented to the emergency department with a 1-day history of drowsiness, headache, and fever. Neurological exam15 ination revealed decreased muscle strength (4/5) in the left lower limb. Head computed tomography scan showed an epidural 16 space-occupying lesion in the right temporoparietal region, which was assumed to be a meningioma by radiographic criteria. However, the surgical specimen was diagnosed as Ewing's sarcoma. CONCLUSION: Primary intracranial extraosseous Ewing's sarcoma is a rare condition that may mimic a meningioma on imaging. Physicians must be cognizant of this possibility, particularly in any young individual with a solitary contrast-enhancing dural-based lesion.


Assuntos
Dura-Máter/patologia , Sarcoma de Ewing/patologia , Neoplasias de Tecidos Moles/patologia , Diagnóstico Diferencial , Humanos , Masculino , Neoplasias Meníngeas/diagnóstico , Meningioma/diagnóstico , Sarcoma de Ewing/diagnóstico , Neoplasias de Tecidos Moles/diagnóstico , Adulto Jovem
8.
J Pak Med Assoc ; 69(9): 1400-1402, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-31511736

RESUMO

Paediatric brainstem gliomas (BSGs) can be classified broadly into two distinct categories: focal brainstem gliomas (FBSGs) and diffuse intrinsic pontine gliomas (DIPG). The former account for 20% of paediatric BSGs and are mostly indolent lesions with good prognosis. DIPGs constitute the remaining 80%, and are highly aggressive, malignant tumours having a dismal prognosis; being the foremost cause of death in children with brain tumours. Their poor response to treatment regimens is further complicated by their localization in eloquent brainstem areas, thereby making it difficult to establish a standardized framework of therapeutic intervention. In this review, the authors catalogue and appraise current treatment modalities utilized in the management of paediatric BSGs including steroid use, chemotherapy, radiotherapy, and surgery.


Assuntos
Antineoplásicos/uso terapêutico , Neoplasias do Tronco Encefálico/terapia , Glioma Pontino Intrínseco Difuso/terapia , Procedimentos Neurocirúrgicos , Radioterapia , Criança , Glioma/terapia , Humanos
9.
J Pak Med Assoc ; 69(1): 103-107, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-30623922

RESUMO

Fungal infections of the central nervous system (CNS) are uncommon. Despite several advancements in diagnosis and treatment of these infections, the mortality rates remain high. The current retrospective study was planned to define the demographic and clinical features of patients with CNS fungal infections. Conducted at Aga Khan University Hospital, Karachi, and comprising CNS fungal infections operated between January 2000 and December 2015. The study analysed whether a short course of pre-operative anti-fungal therapy may improve outcomes in these patients. There were 47 cases confirmed on histopathology and/or microbiology. Outcome measures used were Glasgow coma score (GCS), Glasgow outcome score (GOS) and Karnofsky performance score (KPS). The overall 30-day mortality was 20(42.5%). Fungal infections of the CNS can occur in both immune-compromised and immune-competent patients. Early diagnosis, radical surgery, pre-operative anti-fungal therapy for at least 2 weeks, pre- and postoperative Voriconazole therapy results in more favourable outcomes.


Assuntos
Infecções Fúngicas do Sistema Nervoso Central , Craniotomia , Cuidados Pré-Operatórios/métodos , Voriconazol/administração & dosagem , Antifúngicos/administração & dosagem , Infecções Fúngicas do Sistema Nervoso Central/tratamento farmacológico , Infecções Fúngicas do Sistema Nervoso Central/microbiologia , Infecções Fúngicas do Sistema Nervoso Central/mortalidade , Infecções Fúngicas do Sistema Nervoso Central/cirurgia , Craniotomia/efeitos adversos , Craniotomia/métodos , Diagnóstico Precoce , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Procedimentos Neurocirúrgicos/efeitos adversos , Procedimentos Neurocirúrgicos/métodos , Avaliação de Processos e Resultados em Cuidados de Saúde , Paquistão/epidemiologia , Fatores de Risco , Fatores de Tempo
10.
J Pak Med Assoc ; 68(8): 1273-1275, 2018 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-30108403

RESUMO

Gliosarcoma is a highly aggressive primary brain tumour. It is a relatively rare tumour and comprises of two histological components, glial and sarcomatous. Gliosarcomas carry a poorer prognosis than that of Glioblastoma Multiforme (GBM). The current review highlights important histological and radiological features of gliosarcoma in the light of recent literature, and also touches upon the treatment options and outcomes of various types of gliosarcoma.


Assuntos
Neoplasias Encefálicas/patologia , Gliossarcoma/patologia , Encéfalo/diagnóstico por imagem , Encéfalo/patologia , Neoplasias Encefálicas/diagnóstico , Neoplasias Encefálicas/diagnóstico por imagem , Neoplasias Encefálicas/terapia , Gliossarcoma/diagnóstico , Gliossarcoma/diagnóstico por imagem , Gliossarcoma/terapia , Humanos , Neuroimagem
11.
Pediatr Neurosurg ; 52(2): 77-79, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-27926912

RESUMO

Cranioplasty is a frequently performed procedure in neurosurgery. The pediatric population for this procedure is distinct from the adult one because of the growing skulls and thinner bones of the calvarium. A paucity of data on the outcomes of this procedure in the pediatric population has been identified repeatedly. We conducted a retrospective cohort study to investigate the outcomes in a pediatric population that underwent cranioplasty after craniectomy at our institute in a developing-world country. Our cohort showed no association of complication rate or cosmetic outcomes with the timing of cranioplasty, area of skull defect, type of implant used, or method of storage.


Assuntos
Craniectomia Descompressiva/métodos , Países em Desenvolvimento , Procedimentos de Cirurgia Plástica/métodos , Criança , Pré-Escolar , Feminino , Humanos , Masculino , Complicações Pós-Operatórias , Próteses e Implantes , Estudos Retrospectivos
12.
J Pak Med Assoc ; 66(Suppl 3)(10): S65-S67, 2016 10.
Artigo em Inglês | MEDLINE | ID: mdl-27895358

RESUMO

Traumatic brain injury (TBI) is the leading cause of morbidity and mortality in children worldwide. This study was conducted to report the presentation, management, outcomes and prognostic indicators in a large series of patients from a tertiary care centre in a developing country. It is a review of prospectively collected data of paediatric patients with TBI admitted at our centre between July 2010 and December 2013. A total of 291 patients with a mean age of 7.2±5.0 years were dichotomised into survivors and non-survivors, and variables were compared between the two groups. The mean post-resuscitation Glasgow coma scale (GCS) score was 11.6±3.9, mean Marshall Score was 2.26±0.95 and the mean revised trauma score at presentation was 10.58±1.7. Younger age, lower GCS score after resuscitation, lower revised trauma score, absent cisterns on imaging, associated subarachnoid haemorrhage (SAH) and intraventricular haemorrhage (IVH) and a lower Marshall score were associated with higher mortality.


Assuntos
Lesões Encefálicas Traumáticas/diagnóstico , Países em Desenvolvimento , Centros de Atenção Terciária/estatística & dados numéricos , Lesões Encefálicas Traumáticas/complicações , Lesões Encefálicas Traumáticas/terapia , Criança , Pré-Escolar , Escala de Coma de Glasgow , Humanos , Prognóstico , Estudos Retrospectivos , Resultado do Tratamento
13.
Childs Nerv Syst ; 31(11): 2117-22, 2015 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-26143279

RESUMO

PURPOSE: Management of cerebral edema in infants is challenging. Decompressive craniectomy in young age has shown favorable outcomes for management of intracranial hypertension, but current literature is scarce and consists of only case reports or small series. The purpose of the current study is to report the challenges faced with this procedure and its complications in this peculiar age group. METHODS: This is a retrospective chart review of infants (less than 1 year of age) undergoing unilateral or bilateral decompressive craniotomy at a tertiary care hospital in Pakistan. Kochi score was used to score outcomes of five infants who underwent the procedure. RESULTS: Five infants were included in this series. Operative time for decompressive craniectomy (DC) ranged from 1 h and 40 min to 4 h. Three infants survived to undergo cranioplasty. Two infants recovered with good Kochi scores of 5a and one infant developed hemiparesis (Kochi score 3b). CONCLUSIONS: Decompressive craniectomy carries good outcomes in selected patients. Risk of bleeding and hemodynamic instability makes this procedure challenging. We found coagulopathy in four of the five patients which poses another challenge to the surgical management of these patients and has not been stressed enough in the previous literature.


Assuntos
Lesões Encefálicas/cirurgia , Craniectomia Descompressiva/métodos , Feminino , Escala de Coma de Glasgow , Humanos , Lactente , Masculino , Complicações Pós-Operatórias/diagnóstico , Complicações Pós-Operatórias/etiologia , Estudos Retrospectivos , Tomógrafos Computadorizados
14.
Med Teach ; 37(3): 289-95, 2015 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-25155842

RESUMO

OBJECTIVE: Medical education and teaching skills are core competencies included in the generic curriculum for specialty training. To support the development of these skills, there is need for a validated instrument. This study aims to develop and test an instrument to measure the attributes of specialty trainees as effective teachers. METHODS: The study was conducted in two phases. In first phase, the content of the instrument was generated from the literature and tested using the Delphi technique. In second phase, the instrument was field tested for validity and reliability using factor analysis and generalizability study. Feasibility was calculated by the time taken to complete the instrument. Acceptability and educational impact were determined by qualitative analysis of written feedback. Attributes of specialty trainees were assessed by clinical supervisors, peers, and students. RESULTS: The Delphi study produced consensus on 15 statements which formed the basis of the instrument. In field study, a total of 415 instruments were completed. Factor analysis demonstrated a three-factor solution ('learning-teaching milieu', 'teaching skills', and 'learner-orientated'). A generalizability coefficient was 0.92. Mean time to complete the instrument was five minutes. Feedback indicated that it was an acceptable and useful method of assessment. CONCLUSION: This new instrument provides valid, reliable, feasible, and acceptable assessment of clinical teaching.


Assuntos
Currículo , Educação Médica/métodos , Grupo Associado , Ensino/métodos , Competência Clínica , Técnica Delphi , Retroalimentação , Humanos , Aprendizagem , Medicina , Desenvolvimento de Programas , Avaliação de Programas e Projetos de Saúde , Reprodutibilidade dos Testes
15.
Histopathology ; 64(4): 547-56, 2014 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-24266897

RESUMO

AIMS: Discriminating small-cell lung carcinoma (SCLC) from large-cell neuroendocrine carcinoma (LCNEC) rests on morphological criteria, and reproducibility has been shown to be poor. We aimed to identify immunohistochemical markers to assist this diagnosis. METHODS AND RESULTS: Gene expression profiling on laser captured frozen tumour samples from eight SCLC and eight LCNEC tumours identified a total of 888 differentially expressed genes (DEGs), 23 of which were validated by qRT-PCR. Antibodies to four selected gene products were then evaluated as immunohistochemical markers on a cohort of 173 formalin-fixed paraffin-embedded (FFPE) SCLC/LCNEC tumour samples, including 26 indeterminate tumours without a consensus diagnosis. Three markers, CDX2, VIL1 and BAI3, gave significantly different results in the two tumour types (P < 0.0001): CDX2 and VIL1 in combination (either marker positive) showed sensitivity and specificity of 81% for LCNEC while BAI3 showed 89% sensitivity and 75% specificity for SCLC. Of the 26 indeterminate tumours 15 (58%) showed an immunophenotype suggesting either SCLC or LCNEC, eight (31%) showed staining of both tumour types, and three (11%) were negative for all markers. CONCLUSION: A panel of three markers, BAI3, CDX2 and VIL1, is a useful adjunct in the diagnosis of these tumour types.


Assuntos
Carcinoma Neuroendócrino/diagnóstico , Carcinoma Neuroendócrino/metabolismo , Carcinoma de Células Pequenas/diagnóstico , Carcinoma de Células Pequenas/metabolismo , Proteínas de Homeodomínio/metabolismo , Neoplasias Pulmonares/diagnóstico , Neoplasias Pulmonares/metabolismo , Proteínas dos Microfilamentos/metabolismo , Proteínas do Tecido Nervoso/metabolismo , Biomarcadores Tumorais/genética , Biomarcadores Tumorais/metabolismo , Fator de Transcrição CDX2 , Carcinoma Neuroendócrino/genética , Carcinoma de Células Pequenas/genética , Estudos de Coortes , Diagnóstico Diferencial , Perfilação da Expressão Gênica , Proteínas de Homeodomínio/genética , Humanos , Imuno-Histoquímica , Microdissecção e Captura a Laser , Neoplasias Pulmonares/genética , Proteínas dos Microfilamentos/genética , Proteínas do Tecido Nervoso/genética , Reação em Cadeia da Polimerase Via Transcriptase Reversa
16.
Acta Psychol (Amst) ; 248: 104339, 2024 Jun 12.
Artigo em Inglês | MEDLINE | ID: mdl-38870684

RESUMO

Negative behaviors at the workplace always disturb the management of the firms. This research investigates the link between the dark triad and various types of Knowledge hiding (Evasive hiding, Playing dumb, and Rationalized hiding) in firms. In addition, this study explores perceived organizational politics as a mediator. The design of this study is quantitative and positivist. The data were collected in three waves (45 days gap) with a random sampling approach from 383 personnel/staff working in Chinese commercial banking firms. The data were analyzed using the partial least squares structural equation modeling (PLS-SEM) technique and Smartpls-4 software. This study confirms that dark-triad has a positive relation with knowledge hiding, except psychopathy and Machiavellianism, which have no significant correlation with playing dumb and evasive hiding, respectively. Perceived organizational politics significantly mediate the association between dark triad personality traits and the types of knowledge hiding. Employees with political skills and a trust-based culture can counter the dark-triad personalities and discourage the knowledge-hiding culture. For effective management of knowledge-hiding issues in firms, codifying implicit and explicit Knowledge and developing knowledge repositories can discourage a knowledge-hiding culture.

17.
Acta Psychol (Amst) ; 244: 104188, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38368783

RESUMO

Impostorism and knowledge-hiding behaviors negatively impact employees and organizational performance. This study examines the association between impostor leaders and knowledge hiding (evasive hiding, playing dumb, and rationalized hiding). Attachment avoidance is discussed as a mediator between impostor leaders and knowledge-hiding. For quantitative analyses, this study collected the data from 429 individuals with two time lags by sharing the survey instrument link on different organizations' randomly selected official media pages. After obtaining approval from the administrators of these pages, leaders and subordinates from these organizations were asked to participate in the study. The partial least squares structural equation modeling method is employed with Smartpls-4 software for data analyses. The findings indicate that impostor leaders promote knowledge hiding in subordinates. However, impostor leaders highly promote rationalized hiding behavior in subordinates. Attachment avoidance mediates the relationship between the impostor leader and knowledge-hiding behaviors. However, the highest mediation relationship exists between an impostor leader and playing dumb behavior in subordinates. This study strengthens the generalizability of the social exchange theory. The implications mentioned in this study are beneficial in understanding and dealing with the Impostorism and knowledge-hiding phenomena.


Assuntos
Análise de Dados , Conhecimento , Humanos
18.
Brain Tumor Res Treat ; 12(2): 109-114, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38742259

RESUMO

Langerhans cell histiocytosis (LCH) is a rare condition in adults, especially when it is limited to a single area of the skull, known as solitary calvarial involvement. In this case report, we present a unique instance of LCH affecting the parietal bone with a pus-draining fistula. This is a rare and unusual presentation at this location, which has been scarcely reported in medical literature. A 30-year-old woman with no prior comorbidity presented with complaints of headache that persisted for a year. She also had swelling on her scalp and a yellowish discharge for 3 weeks, but no neurological problems were observed. Radiology revealed thinning of the calvaria, with ragged margins along the inner table, multiple focal erosions, and involvement of overlying soft tissue and bony sequestrum. The patient underwent biparietal craniotomy and excision of the lesion. The histopathology report showed LCH. After 8 months of follow-up, there was no recurrence. The management of solitary calvarial involvement by LCH with masquerading presentation as a scalp infection can be achieved through complete excision of the lesions, resulting in a favorable outcome.

19.
Surg Neurol Int ; 15: 37, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38468659

RESUMO

Background: Non-functioning pituitary adenomas (NFPAs) are well-differentiated benign tumors originating from the adenohypophyseal cells of the pituitary gland. They present with headaches, visual disorders, or cranial nerve deficits. NFPAs can recur, progress, or present as residual tumors. We, therefore, conducted this review to compare the effects of both revision surgery and stereotactic surgery on tumor size, visual status, endocrine status, and complications. Methods: A systematic review of published literature on recurrent, residual, or progressing NFPAs that underwent redo surgery or stereotactic radiosurgery from the inception till June 2020 was conducted as per Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Thirteen records (1209 patients) were included, and risk ratio (RR) and 95% confidence intervals (CIs) estimated from each study were pooled using a random-effects meta-analysis model. Results: Redo surgery was the preferred intervention in patients presenting with larger tumor sizes and was more effective in reducing the tumor size as compared to stereotactic radiosurgery (SRS) (risk ratio [RR] 56.14; 95% CI, 16.45-191.58). There was more visual loss with revision surgery as compared to SRS (risk ratio [RR] 0.08; 95% CI, 0.03-0.20). However, SRS was associated with fewer complications, such as new diabetes insipidus, as compared to the redo surgery (risk ratio [RR] 0.01; 95% CI 0.01-0.03). Conclusion: Redo surgery is the superior choice in the treatment of recurrent/residual or progressing NFPAs if the tumor size is large and an immediate reduction in tumor burden through debulking is warranted. However, redo surgery is associated with a higher risk of visual loss, new endocrinopathies, and other complications, in contrast to SRS.

20.
Childs Nerv Syst ; 29(5): 791-802, 2013 May.
Artigo em Inglês | MEDLINE | ID: mdl-23296321

RESUMO

PURPOSE: Management of hydrocephalus with insertion of ventriculoperitoneal (VP) shunt is associated with significant complications in both adult and pediatric patients. These may be more common in developing countries due to poor economic conditions and a dearth of available resources. We report a 6 years' experience with VP shunt insertion in pediatric patients from a developing country, focusing particularly on factors affecting shunt failure. METHODS: Patients aged below 15 years, who had undergone insertion of VP shunts for hydrocephalus during the years 2006 to 2011, were included. A retrospective analysis of shunt survival was performed using Kaplan-Meier curves and Logrank (Cox-Mantel) test. RESULTS: Among the total 113 patients, the most common etiologies of hydrocephalus were congenital hydrocephalus (19.5 %), brain tumors (14.2 %), and postcranial surgery (13.3 %). Overall shunt failure at a mean follow-up of 11 months was 23 % with the median time to first shunt failure being 68 days. Shunt survival was worse in patients with meningitis (p = 0.024), aqueductal stenosis (p = 0.008), postcranial surgery hydrocephalus (p = 0.006), Caesarean mode of delivery (p = 0.036), congenital abnormalities (p = 0.031), and a past history of surgical excision of mass lesion (p = 0.044).Frequency of shunt failure was also significantly affected by the location of brain tumor (p = 0.015) and prematurity (p = 0.015). CONCLUSION: Premature infants still have a higher rate of shunt failure. Patients with meningitis, aqueductal stenosis, postcranial surgery hydrocephalus, congenital abnormalities, and a past history of surgical excision of mass lesion may have early shunt failure. However, the frequency of shunt failure that we observed (23 %) was much lower than that quoted earlier in the literature and this may be a consequence of rigorous periodic evaluation of patients with VP shunt in situ.


Assuntos
Hidrocefalia/cirurgia , Complicações Pós-Operatórias/mortalidade , Derivação Ventriculoperitoneal/mortalidade , Adolescente , Criança , Pré-Escolar , Feminino , Seguimentos , Escala de Coma de Glasgow , Hospitais Universitários , Humanos , Hidrocefalia/epidemiologia , Lactente , Recém-Nascido , Estimativa de Kaplan-Meier , Masculino , Paquistão , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/etiologia , Estudos Retrospectivos , Fatores de Risco , Fatores de Tempo , Resultado do Tratamento , Derivação Ventriculoperitoneal/efeitos adversos
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