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1.
J Immunol ; 209(1): 77-92, 2022 07 01.
Artigo em Inglês | MEDLINE | ID: mdl-35705252

RESUMO

The zinc-finger transcription factor GATA-3 plays a crucial role during early T cell development and also dictates later T cell differentiation outcomes. However, its role and collaboration with the Notch signaling pathway in the induction of T lineage specification and commitment have not been fully elucidated. We show that GATA-3 deficiency in mouse hematopoietic progenitors results in an early block in T cell development despite the presence of Notch signals, with a failure to upregulate Bcl11b expression, leading to a diversion along a myeloid, but not a B cell, lineage fate. GATA-3 deficiency in the presence of Notch signaling results in the apoptosis of early T lineage cells, as seen with inhibition of CDK4/6 (cyclin-dependent kinases 4 and 6) function, and dysregulated cyclin-dependent kinase inhibitor 2b (Cdkn2b) expression. We also show that GATA-3 induces Bcl11b, and together with Bcl11b represses Cdkn2b expression; however, loss of Cdkn2b failed to rescue the developmental block of GATA-3-deficient T cell progenitor. Our findings provide a signaling and transcriptional network by which the T lineage program in response to Notch signals is realized.


Assuntos
Fator de Transcrição GATA3/metabolismo , Transdução de Sinais , Linfócitos T , Animais , Diferenciação Celular , Linhagem da Célula , Proteínas Inibidoras de Quinase Dependente de Ciclina , Redes Reguladoras de Genes , Camundongos , Proteínas Repressoras/genética , Proteínas Repressoras/metabolismo , Linfócitos T/metabolismo , Proteínas Supressoras de Tumor/metabolismo
2.
Artigo em Inglês | MEDLINE | ID: mdl-38740130

RESUMO

STUDY OBJECTIVE: To compare the prevalence and accrual of 30-day postoperative complications by operative time for open myomectomy (OM) and minimally invasive myomectomy (MIM). DESIGN: Retrospective cohort study SETTING: Hospitals participating in the National Surgical Quality Improvement Program database from January 2015 to December 2021. PATIENTS: Female patients aged ≥18 years undergoing OM or MIM. INTERVENTIONS: Patients were categorized into OM and MIM cohorts. Covariates associated with operative time and composite complications were identified using general linear model and chi-square or Fisher's exact test as appropriate. Adjusted spline regression was performed as a test of linearity between operative time and composite complications. Adjusted risk ratios of 30-day postoperative individual, minor, major, and composite complications by 60-minute operative time increments were estimated using Poisson regression with robust error variance. MEASUREMENTS AND MAIN RESULTS: Of 27 728 patients, 11 071 underwent MIM and 16 657 underwent OM. Mean operative times (SD) were 164.6 (82.0) for MIM and 129.2 (67.0) for OM. Raw composite complication rates were 5.5% for MIM and 15.8% for OM. Adjusted spline regression demonstrated linearity between operative time and relative risk of composite postoperative complications for both MIM and OM. MIM had higher adjusted relative risk (aRR, 95% CI) compared to OM of blood transfusion (1.55, 1.45-1.64 versus 1.29, 1.25-1.34), overall minor complications (1.13, 1.03-1.23 versus 1.01, 0.92-1.10), and overall major complications (1.43, 1.35-1.51 versus 1.27, 1.12-1.32). Operative time had greater impact on risk of composite complications for MIM than OM, reaching aRR 2.0 at 296 minutes versus 461 minutes for OM. CONCLUSION: OM has a higher overall rate of composite, minor, and major complications compared to MIM. While operative time is independently and linearly associated with postoperative complications with myomectomy regardless of approach, optimizing surgical efficiency for MIM may be more critical than for OM.

3.
J Minim Invasive Gynecol ; 30(5): 382-388, 2023 05.
Artigo em Inglês | MEDLINE | ID: mdl-36708763

RESUMO

STUDY OBJECTIVE: To compare postoperative complication rates between same-day discharge patients and patients admitted to hospital after minimally invasive myomectomy, stratified by patient demographics and perioperative variables including myoma burden. DESIGN: Retrospective cohort study. Setting Hospitals participating in the National Surgical Quality Improvement Program database from January 2015 to December 2019. PATIENTS: Female patients aged ≥18 years undergoing minimally invasive myomectomy. INTERVENTIONS: Patients were categorized into either the same-day discharge or admitted patient cohort. Univariate comparisons of demographics, perioperative variables, and 30-day postoperative complications were performed. Multivariate logistic regression was used to 1) identify demographic and perioperative factors associated with admission, and 2) compare postoperative complication rates of same-day discharge patients with those of admitted patients while adjusting for demographic and perioperative factors. MEASUREMENTS AND MAIN RESULTS: Eight thousand one hundred patients were recruited during the study period. The overall rate of same-day discharge was 57.2% in 2015 and 65.0% in 2019. The same-day discharge rate was 64.6% for patients with a smaller myoma burden (1-4 fibroids and ≤250 grams, Current Procedural Terminology 58545) and 56.8% for larger myoma burden (≥5 fibroids or >250 grams, Current Procedural Terminology 58546). Age, race, American Society of Anesthesiologists classification III or IV, preoperative hematocrit <36%, hypertension, diabetes, bleeding disorder, and increasing operative time were associated with admission to hospital. After adjusting for these variables, composite postoperative complication rates were similar between admitted patients and patients who were discharged the same day regardless of myoma burden (adjusted OR [aOR], 0.66; 95% confidence interval [CI] 0.18-2.47 for low myoma burden and aOR, 0.91; 95% CI 0.18-4.63 for high myoma burden). Admitted patients with both low (aOR, 9.1; 95% CI 2.27-37.04) and high (aOR, 8.24; 95% CI 1.59-42.49) myoma burdens were significantly more likely to receive a blood transfusion compared to same-day discharge patients. CONCLUSION: Same-day discharge after minimally invasive myomectomy, regardless of myoma burden, is associated with low complication rates. Our findings may aid in shared decision making on discharge planning.


Assuntos
Laparoscopia , Leiomioma , Mioma , Miomectomia Uterina , Neoplasias Uterinas , Humanos , Feminino , Adolescente , Adulto , Miomectomia Uterina/efeitos adversos , Alta do Paciente , Estudos Retrospectivos , Leiomioma/cirurgia , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/cirurgia , Mioma/cirurgia , Hospitais , Neoplasias Uterinas/cirurgia
4.
Stroke ; 53(10): 3116-3122, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-35861076

RESUMO

BACKGROUND: Prior research suggests that women with endometriosis are at greater risk of coronary heart disease. Therefore, our objective was to prospectively investigate the association between laparoscopically confirmed endometriosis and risk of incident stroke during 28 years of follow-up. METHODS: Participants in the NHSII cohort study (Nurses' Health Study II) were followed from 1989 when they were between the ages of 25 to 42 until 2017 for development of incident stroke (ischemic and hemorrhagic). Cox proportional hazard models were used to calculate hazard ratios and 95% CI, with adjustment for potential confounding variables (alcohol intake, body mass index at age 18, current body mass index, age at menarche, menstrual cycle pattern in adolescence, current menstrual cycle pattern, parity, oral contraceptive use history, smoking history, diet quality, physical activity, NSAID use, aspirin use, race/ethnicity, and income). We estimated the proportion of the total association mediated by history of hypertension, hypercholesterolemia, hysterectomy/oophorectomy, and hormone therapy. We also tested for effect modification by age (<50, ≥50 years), infertility history, body mass index (<25, ≥25 kg/m2), and menopausal status. RESULTS: We documented 893 incident cases of stroke during 2 770 152 person-years of follow-up. Women with laparoscopically confirmed endometriosis had a 34% greater risk of stroke in multivariable-adjusted models (hazard ratio, 1.34 [95% CI, 1.10-1.62]), compared to those without a history of endometriosis. Of the total association of endometriosis with risk of stroke, the largest proportion was attributed to hysterectomy/oophorectomy (39% mediated [95% CI, 14%-71%]) and hormone therapy (16% mediated [95% CI, 5%-40%]). We observed no differences in the relationship between endometriosis and stroke by age, infertility history, body mass index, or menopausal status. CONCLUSIONS: We observed that women with endometriosis were at elevated risk of stroke. Women and their health care providers should be aware of endometriosis history, maximize primary cardiovascular prevention, and discuss signs and symptoms of cardiovascular disease.


Assuntos
Endometriose , Infertilidade , Acidente Vascular Cerebral , Adolescente , Adulto , Anti-Inflamatórios não Esteroides , Aspirina , Estudos de Coortes , Anticoncepcionais Orais , Endometriose/complicações , Endometriose/diagnóstico , Endometriose/epidemiologia , Feminino , Hormônios , Humanos , Pessoa de Meia-Idade , Gravidez , Estudos Prospectivos , Fatores de Risco , Acidente Vascular Cerebral/complicações , Acidente Vascular Cerebral/epidemiologia
5.
PLoS Med ; 19(10): e1004120, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-36260627

RESUMO

BACKGROUND: Early antiviral treatment is effective for Coronavirus Disease 2019 (COVID-19) but currently available agents are expensive. Favipiravir is routinely used in many countries, but efficacy is unproven. Antiviral combinations have not been systematically studied. We aimed to evaluate the effect of favipiravir, lopinavir-ritonavir or the combination of both agents on Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) viral load trajectory when administered early. METHODS AND FINDINGS: We conducted a Phase 2, proof of principle, randomised, placebo-controlled, 2 × 2 factorial, double-blind trial of ambulatory outpatients with early COVID-19 (within 7 days of symptom onset) at 2 sites in the United Kingdom. Participants were randomised using a centralised online process to receive: favipiravir (1,800 mg twice daily on Day 1 followed by 400 mg 4 times daily on Days 2 to 7) plus lopinavir-ritonavir (400 mg/100 mg twice daily on Day 1, followed by 200 mg/50 mg 4 times daily on Days 2 to 7), favipiravir plus lopinavir-ritonavir placebo, lopinavir-ritonavir plus favipiravir placebo, or both placebos. The primary outcome was SARS-CoV-2 viral load at Day 5, accounting for baseline viral load. Between 6 October 2020 and 4 November 2021, we recruited 240 participants. For the favipiravir+lopinavir-ritonavir, favipiravir+placebo, lopinavir-ritonavir+placebo, and placebo-only arms, we recruited 61, 59, 60, and 60 participants and analysed 55, 56, 55, and 58 participants, respectively, who provided viral load measures at Day 1 and Day 5. In the primary analysis, the mean viral load in the favipiravir+placebo arm had changed by -0.57 log10 (95% CI -1.21 to 0.07, p = 0.08) and in the lopinavir-ritonavir+placebo arm by -0.18 log10 (95% CI -0.82 to 0.46, p = 0.58) compared to the placebo arm at Day 5. There was no significant interaction between favipiravir and lopinavir-ritonavir (interaction coefficient term: 0.59 log10, 95% CI -0.32 to 1.50, p = 0.20). More participants had undetectable virus at Day 5 in the favipiravir+placebo arm compared to placebo only (46.3% versus 26.9%, odds ratio (OR): 2.47, 95% CI 1.08 to 5.65; p = 0.03). Adverse events were observed more frequently with lopinavir-ritonavir, mainly gastrointestinal disturbance. Favipiravir drug levels were lower in the combination arm than the favipiravir monotherapy arm, possibly due to poor absorption. The major limitation was that the study population was relatively young and healthy compared to those most affected by the COVID-19 pandemic. CONCLUSIONS: At the current doses, no treatment significantly reduced viral load in the primary analysis. Favipiravir requires further evaluation with consideration of dose escalation. Lopinavir-ritonavir administration was associated with lower plasma favipiravir concentrations. TRIAL REGISTRATION: Clinicaltrials.gov NCT04499677 EudraCT: 2020-002106-68.


Assuntos
Tratamento Farmacológico da COVID-19 , Humanos , Lopinavir/uso terapêutico , Pandemias , Ritonavir/uso terapêutico , Antivirais/efeitos adversos , SARS-CoV-2 , Resultado do Tratamento
6.
Clin Infect Dis ; 71(7): e191-e194, 2020 10 23.
Artigo em Inglês | MEDLINE | ID: mdl-32124919

RESUMO

A combination of favipiravir and zanamivir successfully cleared influenza B infection in a child who had undergone bone marrow transplant for X-linked severe combined immunodeficiency, with no recovery of T lymphocytes. Deep sequencing of viral samples illuminated the within-host dynamics of infection, demonstrating the effectiveness of favipiravir in this case.


Assuntos
Influenza Humana , Zanamivir , Amidas , Antivirais/uso terapêutico , Criança , Humanos , Influenza Humana/tratamento farmacológico , Pirazinas/uso terapêutico , Zanamivir/uso terapêutico
7.
Brain Behav Immun ; 87: 189-192, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-32201255

RESUMO

Technological developments in recent years have led to a surge in advances in neuroimmunology, making real progress towards improving human health. With the scale of the challenges ahead, realising this potential requires a collaborative effort. The neuroscience, immunology and wider scientific community, both academia and industry, must come together to pool together ideas, experiences and resources.

8.
Gynecol Endocrinol ; 36(10): 854-859, 2020 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-32252571

RESUMO

Polycystic ovary syndrome (PCOS) is the most common endocrine disorder in reproductive-aged women. A recent study found that many obstetrics and gynecology (ObGyn) practicing physicians are unaware of the Rotterdam criteria recommended for diagnosis. Our objective was to identify gaps in trainee knowledge of PCOS diagnostic criteria and management. An online survey was sent out to US ObGyn physicians-in-training in 2018. The primary outcomes were identification of at least one component of each Rotterdam criteria (Rot-3): (1) oligomenorrhea/amenorrhea, (2) clinical or biochemical hyperandrogenism, and (3) ovarian volume or antral follicle count, and identification of all five components (Rot-5). Secondary outcomes were identification of comorbidities and management of PCOS. Multivariable logistic regression was used controlling for gender, seniority (PGY) status, program type, completion of an REI rotation, and number of PCOS patients seen. 85.4% of 347 trainees completing the survey reported using Rotterdam criteria to diagnose PCOS. However, only 55% identified Rot-3 and less than 10% identified Rot-5. Seniority (PGY4 OR 2.2; 95% CI: 1.2-4.1; p = .01) and completion of REI rotation (OR 1.8 95% CI: 1.2, 1.8; p = .006) were associated with identifying Rot-3. Similar findings were noted with identifying Rot-5. Our study identified significant gaps in knowledge regarding PCOS, suggesting an urgent need for improving strategies for trainee education to increase patient satisfaction and provide comprehensive care.


Assuntos
Competência Clínica , Ginecologia/educação , Obstetrícia/educação , Síndrome do Ovário Policístico/diagnóstico , Feminino , Ginecologia/normas , Ginecologia/estatística & dados numéricos , Humanos , Internato e Residência , Masculino , Obstetrícia/estatística & dados numéricos , Síndrome do Ovário Policístico/terapia
9.
Clin Infect Dis ; 68(2): 222-228, 2019 01 07.
Artigo em Inglês | MEDLINE | ID: mdl-29800111

RESUMO

Background: Norovirus is a leading cause of worldwide and nosocomial gastroenteritis. The study aim was to assess the utility of molecular epidemiology using full genome sequences compared to routine infection prevention and control (IPC) investigations. Methods: Norovirus genomes were generated from new episodes of norovirus at a pediatric tertiary referral hospital over a 19-month period (n = 182). Phylogeny identified clusters of related sequences that were verified using epidemiological and clinical data. Results: Twenty-four clusters of related norovirus sequences ("sequence clusters") were observed, including 8 previously identified by IPC investigations ("IPC outbreaks"). Seventeen sequence clusters (involving 77/182 patients) were corroborated by epidemiological data ("epidemiologically supported clusters"), suggesting transmission between patients. Linked infections were identified among 44 patients who were missed by IPC investigations. Thirty-three percent of norovirus sequences were linked, suggesting nosocomial transmission; 24% of patients had nosocomial infections from an unknown source; and 43% were norovirus positive on admission. Conclusions: We show there are frequent introductions of multiple norovirus strains with extensive onward nosocomial transmission of norovirus in a pediatric hospital with a high proportion of immunosuppressed patients nursed in isolation. Phylogenetic analysis using full genome sequences is more sensitive than classic IPC investigations for identifying linked cases and should be considered when investigating norovirus nosocomial transmission. Sampling of staff, visitors, and the environment may be required for complete understanding of infection sources and transmission routes in patients with nosocomial infections not linked to other patients and among patients with phylogenetically linked cases but no evidence of direct contact.


Assuntos
Infecções por Caliciviridae/transmissão , Infecções por Caliciviridae/virologia , Infecção Hospitalar/transmissão , Infecção Hospitalar/virologia , Genoma Viral , Norovirus/genética , Criança , Surtos de Doenças , Gastroenterite/virologia , Genótipo , Hospitais Pediátricos , Humanos , Filogenia
10.
J Pediatr Orthop ; 39(2): e134-e140, 2019 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-29016426

RESUMO

BACKGROUND: The epidemiology of brachial plexus birth palsy (BPBP) in the United States may be changing over time due to population-level changes in obstetric care. METHODS: The Kids' Inpatient Database from 1997 to 2012 was analyzed. Annual estimates of BPBP incidence and disease determinant distribution were calculated for the general population and the study population with BPBP. Long-term trends were analyzed. A multivariate logistic regression model was used to quantify the risk associated with each determinant. RESULTS: The database yielded a combined total of 5,564,628 sample births extrapolated to 23,385,597 population births. The population incidence of BPBP dropped 47.1% over the 16-year study period, from 1.7 to 0.9 cases per 1000 live births (P<0.001). Female, black, and Hispanic subgroups had moderately increased risks of BPBP. Among children with BPBP, 55.0% had no identifiable risk factor. Shoulder dystocia was the strongest risk factor for BPBP in the regression model [odds ratio (OR), 113.2; P<0.001], although the risk of sustaining a BPBP in the setting of shoulder dystocia decreased from 10.7% in 1997 to 8.3% in 2012 (P=0.006). Birth hypoxia was independently associated with BPBP (OR, 3.1; P<0.001). Cesarean delivery (OR, 0.16; P<0.001) and multiple gestation birth (OR, 0.45; P<0.001) were associated with lower incidence of BPBP. Notably, the rate of cesarean delivery increased by 62.8% during the study period, from 20.9% in 1997 to 34.0% in 2012 (P<0.001). CONCLUSIONS: Over a 16-year period, the incidence of BPBP fell dramatically, paralleled by a significant increase in the rate of cesarean delivery. Systemic changes in obstetric practice may have contributed to these trends. As more than half of BPBP cases have no identifiable risk factor, prospective investigation of established risk factors and characterization of new disease determinants are needed to more reliably identify infants at greatest risk. Racial and geographic inequalities in disease burden should be investigated to identify interventional targets. LEVEL OF EVIDENCE: Level III-case series.


Assuntos
Traumatismos do Nascimento/complicações , Neuropatias do Plexo Braquial/epidemiologia , Plexo Braquial/lesões , Cesárea , Criança , Distocia , Feminino , Humanos , Incidência , Lactente , Recém-Nascido , Modelos Logísticos , Razão de Chances , Gravidez , Estudos Prospectivos , Fatores de Risco , Estados Unidos/epidemiologia
11.
J Infect Dis ; 218(8): 1261-1271, 2018 09 08.
Artigo em Inglês | MEDLINE | ID: mdl-29917114

RESUMO

Background: Adenoviruses are significant pathogens for the immunocompromised, arising from primary infection or reinfection. Serotyping is insufficient to support nosocomial transmission investigations. We investigate whether whole-genome sequencing (WGS) provides clinically relevant information on transmission among patients in a pediatric tertiary hospital. Methods: We developed a target-enriched adenovirus WGS technique for clinical samples and retrospectively sequenced 107 adenovirus-positive residual diagnostic samples, including viremias (>5 × 104 copies/mL), from 37 patients collected January 2011-March 2016. Whole-genome sequencing was used to determine genotype and for phylogenetic analysis. Results: Adenovirus sequences were recovered from 105 of 107 samples. Full genome sequences were recovered from all 20 nonspecies C samples and from 36 of 85 species C viruses, with partial genome sequences recovered from the rest. Whole-genome phylogenetic analysis suggested linkage of 3 genotype A31 cases and uncovered an unsuspected epidemiological link to an A31 infection first detected on the same ward 4 years earlier. In 9 samples from 1 patient who died, we identified a mixed genotype adenovirus infection. Conclusions: Adenovirus WGS from clinical samples is possible and useful for genotyping and molecular epidemiology. Whole-genome sequencing identified likely nosocomial transmission with greater resolution than conventional genotyping and distinguished between adenovirus disease due to single or multiple genotypes.


Assuntos
Adenoviridae/genética , Infecções por Adenovirus Humanos/virologia , Infecção Hospitalar/virologia , Genótipo , Hospedeiro Imunocomprometido , Sequenciamento Completo do Genoma , Adenoviridae/classificação , Infecções por Adenovirus Humanos/transmissão , Adolescente , Criança , Pré-Escolar , Infecção Hospitalar/transmissão , Genômica , Humanos , Lactente , Epidemiologia Molecular , Filogenia
12.
Future Oncol ; 14(29): 3059-3072, 2018 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-30474429

RESUMO

Once unimaginable, fertility management is now a nationally established part of cancer care in institutions, from academic centers to community hospitals to private practices. Over the last two decades, advances in medicine and reproductive science have made it possible for men, women and children to be connected with an oncofertility specialist or offered fertility preservation soon after a cancer diagnosis. The Oncofertility Consortium's National Physicians Cooperative is a large-scale effort to engage physicians across disciplines - oncology, urology, obstetrics and gynecology, reproductive endocrinology, and behavioral health - in clinical and research activities to enable significant progress in providing fertility preservation options to children and adults. Here, we review the structure and function of the National Physicians Cooperative and identify next steps.


Assuntos
Preservação da Fertilidade/métodos , Fertilidade/fisiologia , Colaboração Intersetorial , Neoplasias/fisiopatologia , Médicos/organização & administração , Adulto , Antineoplásicos/efeitos adversos , Medicina do Comportamento/organização & administração , Criança , Progressão da Doença , Endocrinologia/métodos , Endocrinologia/organização & administração , Feminino , Fertilidade/efeitos dos fármacos , Ginecologia/métodos , Ginecologia/organização & administração , Humanos , Oncologia/métodos , Oncologia/organização & administração , Neoplasias/complicações , Neoplasias/patologia , Neoplasias/terapia , Obstetrícia/métodos , Obstetrícia/organização & administração , Guias de Prática Clínica como Assunto , Gravidez , Qualidade de Vida , Medicina Reprodutiva/métodos , Medicina Reprodutiva/organização & administração , Estados Unidos , Urologia/métodos , Urologia/organização & administração
13.
Curr Pain Headache Rep ; 22(11): 77, 2018 09 17.
Artigo em Inglês | MEDLINE | ID: mdl-30225597

RESUMO

PURPOSE OF REVIEW: This review evaluates and explains our current understanding of a rare subtype of migraine, typical aura without headache, also known as migraine aura without headache or acephalgic migraine. RECENT FINDINGS: Typical aura without headache is a known entity within the spectrum of migraine. Its pathophysiology is suggested to be similar to classic migraines, with cortical spreading depression leading to aura formation but without an associated headache. No clinical trials have been performed to evaluate treatment options, but case reports suggest that most patients will respond to the traditional treatments for migraine with aura. Bilateral greater occipital nerve blocks may be helpful in aborting migraine with prolonged aura. Transcranial magnetic stimulation has shown efficacy in aborting attacks of migraine with aura but has not been specifically tested in isolated aura. Typical aura without headache occurs exclusively in 4% patients with migraine, and may take place at some point in 38% of patients with migraine with aura. Typical aura without headache commonly presents with visual aura without headache, brainstem aura without headache, and can also develop later in life, known as late-onset migraine accompaniment.


Assuntos
Epilepsia/epidemiologia , Epilepsia/terapia , Transtornos de Enxaqueca/epidemiologia , Transtornos de Enxaqueca/terapia , Enxaqueca com Aura/epidemiologia , Enxaqueca com Aura/terapia , Humanos , Transtornos de Enxaqueca/complicações , Enxaqueca com Aura/complicações
14.
Curr Pain Headache Rep ; 22(12): 85, 2018 10 20.
Artigo em Inglês | MEDLINE | ID: mdl-30343336

RESUMO

The original version of this article contains an error in the title. The title should be: Migraine Aura Without Headache. The title is corrected in this correction article.

15.
Lancet ; 386(10008): 2078-2088, 2015 Nov 21.
Artigo em Inglês | MEDLINE | ID: mdl-26386540

RESUMO

BACKGROUND: Despite preventive vaccines for oncogenic human papillomaviruses (HPVs), cervical intraepithelial neoplasia (CIN) is common, and current treatments are ablative and can lead to long-term reproductive morbidity. We assessed whether VGX-3100, synthetic plasmids targeting HPV-16 and HPV-18 E6 and E7 proteins, delivered by electroporation, would cause histopathological regression in women with CIN2/3. METHODS: Efficacy, safety, and immunogenicity of VGX-3100 were assessed in CIN2/3 associated with HPV-16 and HPV-18, in a randomised, double-blind, placebo-controlled phase 2b study. Patients from 36 academic and private gynaecology practices in seven countries were randomised (3:1) to receive 6 mg VGX-3100 or placebo (1 mL), given intramuscularly at 0, 4, and 12 weeks. Randomisation was stratified by age (<25 vs ≥25 years) and CIN2 versus CIN3 by computer-generated allocation sequence (block size 4). Funder and site personnel, participants, and pathologists were masked to treatment. The primary efficacy endpoint was regression to CIN1 or normal pathology 36 weeks after the first dose. Per-protocol and modified intention-to-treat analyses were based on patients receiving three doses without protocol violations, and on patients receiving at least one dose, respectively. The safety population included all patients who received at least one dose. The trial is registered at ClinicalTrials.gov (number NCT01304524) and EudraCT (number 2012-001334-33). FINDINGS: Between Oct 19, 2011, and July 30, 2013, 167 patients received either VGX-3100 (n=125) or placebo (n=42). In the per-protocol analysis 53 (49·5%) of 107 VGX-3100 recipients and 11 (30·6%) of 36 placebo recipients had histopathological regression (percentage point difference 19·0 [95% CI 1·4-36·6]; p=0·034). In the modified intention-to-treat analysis 55 (48·2%) of 114 VGX-3100 recipients and 12 (30·0%) of 40 placebo recipients had histopathological regression (percentage point difference 18·2 [95% CI 1·3-34·4]; p=0·034). Injection-site reactions occurred in most patients, but only erythema was significantly more common in the VGX-3100 group (98/125, 78·4%) than in the placebo group (24/42, 57·1%; percentage point difference 21·3 [95% CI 5·3-37·8]; p=0·007). INTERPRETATION: VGX-3100 is the first therapeutic vaccine to show efficacy against CIN2/3 associated with HPV-16 and HPV-18. VGX-3100 could present a non-surgical therapeutic option for CIN2/3, changing the treatment outlook for this common disease. FUNDING: Inovio Pharmaceuticals.


Assuntos
Infecções por Papillomavirus/tratamento farmacológico , Vacinas contra Papillomavirus/uso terapêutico , Displasia do Colo do Útero/tratamento farmacológico , Neoplasias do Colo do Útero/tratamento farmacológico , Vacinas de DNA/uso terapêutico , Adulto , Vacinas Anticâncer/imunologia , Vacinas Anticâncer/uso terapêutico , Proteínas de Ligação a DNA/genética , Proteínas de Ligação a DNA/imunologia , Método Duplo-Cego , Feminino , Papillomavirus Humano 16/genética , Papillomavirus Humano 16/imunologia , Papillomavirus Humano 18/genética , Papillomavirus Humano 18/imunologia , Humanos , Proteínas Oncogênicas Virais/genética , Proteínas Oncogênicas Virais/imunologia , Proteínas E7 de Papillomavirus/genética , Proteínas E7 de Papillomavirus/imunologia , Infecções por Papillomavirus/virologia , Vacinas contra Papillomavirus/imunologia , Proteínas Repressoras/genética , Proteínas Repressoras/imunologia , Resultado do Tratamento , Neoplasias do Colo do Útero/virologia , Vacinas de DNA/imunologia , Adulto Jovem , Displasia do Colo do Útero/virologia
16.
J Clin Microbiol ; 54(10): 2530-7, 2016 10.
Artigo em Inglês | MEDLINE | ID: mdl-27487952

RESUMO

Norovirus full-genome sequencing is challenging due to sequence heterogeneity among genomes. Previous methods have relied on PCR amplification, which is problematic due to primer design, and transcriptome sequencing (RNA-Seq), which nonspecifically sequences all RNA, including host and bacterial RNA, in stool specimens. Target enrichment uses a panel of custom-designed 120-mer RNA baits that are complementary to all publicly available norovirus sequences, with multiple baits targeting each position of the genome, which overcomes the challenge of primer design. Norovirus genomes are enriched from stool RNA extracts to minimize the sequencing of nontarget RNA. SureSelect target enrichment and Illumina sequencing were used to sequence full genomes from 507 norovirus-positive stool samples with reverse transcription-real-time PCR cycle threshold (CT) values of 10 to 43. Sequencing on an Illumina MiSeq system in batches of 48 generated, on average, 81% on-target reads per sample and 100% genome coverage with >12,000-fold read depth. Samples included genotypes GI.1, GI.2, GI.3, GI.6, GI.7, GII.1, GII.2, GII.3, GII.4, GII.5, GII.6, GII.7, GII.13, GII.14, and GII.17. When outliers were accounted for, we generated >80% genome coverage for all positive samples, regardless of CT values. A total of 164 samples were tested in parallel with conventional PCR genotyping of the capsid shell domain; 164/164 samples were successfully sequenced, compared to 158/164 samples that were amplified by PCR. Four of the samples that failed capsid PCR analysis had low titers, which suggests that target enrichment is more sensitive than gel-based PCR. Two samples failed PCR due to primer mismatches; target enrichment uses multiple baits targeting each position, thus accommodating sequence heterogeneity among norovirus genomes.


Assuntos
Fezes/virologia , Genoma Viral , Norovirus/isolamento & purificação , Hibridização de Ácido Nucleico/métodos , RNA Viral/genética , Análise de Sequência de DNA/métodos , Manejo de Espécimes/métodos , Infecções por Caliciviridae/virologia , Humanos , Masculino , Norovirus/genética
17.
J Immunol ; 192(9): 4017-23, 2014 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-24748636

RESUMO

The generation of a functional and diverse repertoire of T cells occurs in the thymus from precursors arriving from the bone marrow. In this article, we introduce the various stages of mouse thymocyte development and highlight recent work using various in vivo, and, where appropriate, in vitro models of T cell development that led to discoveries in the regulation afforded by transcription factors and receptor-ligand signaling pathways in specifying, maintaining, and promoting the T cell lineage and the production of T cells. This review also discusses the role of the thymic microenvironment in providing a niche for the successful development of T cells. In particular, we focus on advances in Notch signaling and developments in Notch ligand interactions in this process.


Assuntos
Transdução de Sinais/imunologia , Linfócitos T/citologia , Linfócitos T/imunologia , Timo/citologia , Timo/imunologia , Animais , Diferenciação Celular/imunologia , Humanos
18.
Mol Ther ; 23(3): 591-601, 2015 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-25531694

RESUMO

This study evaluated the safety and immunogenicity of PENNVAX-B in 12 HIV infected individuals. PENNVAX-B is a combination of three optimized synthetic plasmids encoding for multiclade HIV Gag and Pol and a consensus CladeB Env delivered by electroporation. HIV infected individuals whose virus was effectively suppressed using highly active antiretroviral therapy (HAART) received PENNVAX-B DNA followed by electroporation with CELLECTRA-5P at study weeks 0, 4, 8, and 16. Local administration site and systemic reactions to PENNVAX-B were recorded after each treatment along with any adverse events. Pain of the treatment procedure was assessed using a Visual Analog Scale. Whole PBMCs were isolated for use in IFN ELISpot and Flow Cytometric assays. PENNVAX-B was generally safe and well tolerated. Overall, the four dose regimen was not associated with any serious adverse events or severe local or systemic reactions. A rise in antigen-specific SFU was detected in the INFγ ELISpot assay in all 12 participants. T cells from 8/12 participants loaded with both granzyme B and perforin in response to HIV antigen, an immune finding characteristic of long-term nonprogressors (LTNPs) and elite controllers (ECs). Thus administration of PENNVAX-B may prove useful adjunctive therapy to ART for treatment and control of HIV infection.


Assuntos
Vacinas contra a AIDS/imunologia , Terapia Antirretroviral de Alta Atividade , Granzimas/biossíntese , Infecções por HIV/terapia , Leucócitos Mononucleares/imunologia , Perforina/biossíntese , Vacinas contra a AIDS/administração & dosagem , Vacinas contra a AIDS/química , Vacinas contra a AIDS/genética , Adulto , Sequência Consenso , ELISPOT , Feminino , Granzimas/genética , Infecções por HIV/imunologia , Infecções por HIV/patologia , Infecções por HIV/virologia , HIV-1/imunologia , Humanos , Imunidade Celular , Interferon gama/biossíntese , Interferon gama/metabolismo , Leucócitos Mononucleares/patologia , Leucócitos Mononucleares/virologia , Masculino , Pessoa de Meia-Idade , Perforina/genética , Vacinação , Vacinas Sintéticas , Produtos do Gene env do Vírus da Imunodeficiência Humana/química , Produtos do Gene env do Vírus da Imunodeficiência Humana/genética , Produtos do Gene env do Vírus da Imunodeficiência Humana/imunologia , Produtos do Gene gag do Vírus da Imunodeficiência Humana/química , Produtos do Gene gag do Vírus da Imunodeficiência Humana/genética , Produtos do Gene gag do Vírus da Imunodeficiência Humana/imunologia , Produtos do Gene pol do Vírus da Imunodeficiência Humana/química , Produtos do Gene pol do Vírus da Imunodeficiência Humana/genética , Produtos do Gene pol do Vírus da Imunodeficiência Humana/imunologia
19.
J Minim Invasive Gynecol ; 23(7): 1113-1122, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27523922

RESUMO

STUDY OBJECTIVE: Although the selection of an approach to minimally invasive hysterectomy is relatively straightforward in an ideal patient scenario, it is more difficult in patients who pose operative challenges such as high body mass index (BMI) and enlarged uteri. The objective of this study was to explore the association between surgical approach and operative morbidity after minimally invasive hysterectomy and examine whether the association varies based on patient BMI and uterine size. DESIGN: Retrospective cohort (Canadian Task Force classification II-2). SETTING: Data abstracted from the American College of Surgeons National Safety and Quality Improvement Project registry. PATIENTS: Thirty-six thousand seven hundred fifty-seven women undergoing vaginal, laparoscopic-assisted vaginal, or total laparoscopic hysterectomy for benign indications between January 2005 and December 2012. INTERVENTIONS: Associations between surgical approach, BMI, and operative morbidity were examined, stratifying by uterine size (< or >250 g) and adjusting for covariates. Adjusted means, rate ratios, or odds ratios with 95% confidence intervals (CI) were calculated using linear, Poisson, or logistic regression. MEASUREMENTS AND MAIN RESULTS: Operative times were shortest in women undergoing vaginal hysterectomy regardless of BMI or uterine size (all p < .02). Although operative time increased with BMI, the association varied with uterine size in women undergoing vaginal hysterectomy; increasing BMI had a minimal impact on operative time with small uteri <250 g but lengthened operative time in uteri >250 g. Compared with vaginal hysterectomy, total laparoscopic hysterectomy had lower odds of blood transfusion (all p < .02) and shorter hospitalizations (all p < .03) regardless of uterine size or BMI. Stratifying by uterine size, the association was strongest in morbidly obese women with small uteri; women with uteri <250 g and BMI >40 kg/m2 had 76% lower odds of blood transfusion (95% CI, 0.10-0.54) and 18% shorter hospitalization (95% CI, 0.75-0.90) after laparoscopic hysterectomy compared with vaginal hysterectomy. CONCLUSION: Major operative morbidity after minimally invasive hysterectomy is rare regardless of the surgical approach. A vaginal approach to hysterectomy is associated with the shortest operative times, but increasing BMI results in a rapid escalation of operative time in women with large uteri. Total laparoscopic hysterectomy is associated with shorter hospitalizations and lower odds of blood transfusion across the BMI spectrum, particularly in women with small uteri. Laparoscopic-assisted vaginal hysterectomy appears to confer no specific advantage over the vaginal or laparoscopic approaches.


Assuntos
Histerectomia/métodos , Obesidade Mórbida , Adulto , Transfusão de Sangue/estatística & dados numéricos , Índice de Massa Corporal , Estudos de Coortes , Feminino , Humanos , Histerectomia Vaginal/métodos , Pessoa de Meia-Idade , Procedimentos Cirúrgicos Minimamente Invasivos , Razão de Chances , Duração da Cirurgia , Complicações Pós-Operatórias , Sistema de Registros , Estudos Retrospectivos , Resultado do Tratamento , Estados Unidos , Útero/patologia
20.
J Genet Couns ; 25(4): 664-76, 2016 08.
Artigo em Inglês | MEDLINE | ID: mdl-27029193

RESUMO

International students have unique personal and academic challenges during their training in genetic counseling programs across the United States (U.S.). Previous research has explored their motivations and experiences; however, there is scant research on how their international status affects the post-graduate experience. The current study used semi-structured phone interviews to explore the professional issues that international students face throughout their educational and professional careers. Twenty-six participants were interviewed including international genetic counseling students in their second years of training and international genetic counselors who graduated from a U.S.-accredited program. Participants included six, second-year students, twelve genetic counselors employed in the U.S., six employed in Canada, and one employed in the United Kingdom (U.K.). Qualitative analysis of interviews captured the common experiences and challenges international students faced during their training and post-graduation. Participants stated that they applied to programs in the U.S. because there is wide transferability of qualifications across the world, and there is limited or no opportunities for masters level genetic counseling training in their home country. Most participants who had applied for jobs in the U.S. experienced difficulties regarding unfamiliarity of human resources (HR) departments and Border Control Officers with international genetic counselors (GCs) and their visa requirements. The results suggest that currently there are insufficient job resources tailored to international genetic counselors, and an inadequate availability of peer support. The results also speak to the need to develop resources for prospective international students and for international GCs seeking jobs, and establishment of a peer support network. These resources may also provide assistance to genetic counseling training programs and employers to address the challenges faced by international genetic counselors.


Assuntos
Educação Profissionalizante , Aconselhamento Genético , Estudantes , Canadá , Humanos , Seleção de Pessoal , Pesquisa Qualitativa , Inquéritos e Questionários , Reino Unido , Estados Unidos
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