Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 84
Filtrar
1.
Neurochirurgie ; 69(4): 101458, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-37301131

RESUMO

PURPOSE: The most frequent postoperative complication in autologous cranioplasty (AC) is infection. European recommendations include osseous sampling before cryogenic storage of a bone flap. We evaluated the clinical impact of this sampling. METHODS: All patients who underwent decompressive craniectomy (DC) and AC in our center between November 2010 and September 2021 were reviewed. The main outcome was the rate of reoperation for infection of the cranioplasty. We evaluated risk factors for bone flap infection, rate of reoperation for any reason (hematoma, skin erosion, cosmetic request, or bone resorption), and radiological evidence of bone flap resorption. RESULTS: A total of 195 patients with a median age of 50 (interquartile range: 38.0-57.0) years underwent DC and AC between 2010 and 2021. Of the 195 bone flaps, 54 (27.7%) had a positive culture, including 48 (88.9%) with Cutibacterium acnes. Of the 14 patients who underwent reoperation for bone flap re-removal for infection, 5 and 9 had positive and negative bacteriological cultures, respectively. Of patients who did not have bone flap infection, 49 and 132 had positive and negative bacteriological cultures, respectively. There were no significant differences between patients with and without positive bacteriological culture of bone flaps in the rates of late bone necrosis and reoperation for bone flap infection. CONCLUSIONS: A positive culture of intraoperative osseous sampling during DC is not associated with a higher risk of re-intervention after AC.


Assuntos
Craniectomia Descompressiva , Infecção da Ferida Cirúrgica , Humanos , Adulto , Pessoa de Meia-Idade , Infecção da Ferida Cirúrgica/diagnóstico , Infecção da Ferida Cirúrgica/cirurgia , Infecção da Ferida Cirúrgica/etiologia , Craniectomia Descompressiva/efeitos adversos , Estudos Retrospectivos , Crânio/cirurgia , Retalhos Cirúrgicos/efeitos adversos , Retalhos Cirúrgicos/cirurgia , Complicações Pós-Operatórias/diagnóstico , Complicações Pós-Operatórias/cirurgia , Complicações Pós-Operatórias/etiologia
2.
Front Immunol ; 14: 1185716, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37304271

RESUMO

Background: Tocilizumab and anakinra are anti-interleukin drugs to treat severe coronavirus disease 2019 (COVID-19) refractory to corticosteroids. However, no studies compared the efficacy of tocilizumab versus anakinra to guide the choice of the therapy in clinical practice. We aimed to compare the outcomes of COVID-19 patients treated with tocilizumab or anakinra. Methods: Our retrospective study was conducted in three French university hospitals between February 2021 and February 2022 and included all the consecutive hospitalized patients with a laboratory-confirmed severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection assessed by RT-PCR who were treated with tocilizumab or anakinra. A propensity score matching was performed to minimize confounding effects due to the non-random allocation. Results: Among 235 patients (mean age, 72 years; 60.9% of male patients), the 28-day mortality (29.4% vs. 31.2%, p = 0.76), the in-hospital mortality (31.7% vs. 33.0%, p = 0.83), the high-flow oxygen requirement (17.5% vs. 18.3%, p = 0.86), the intensive care unit admission rate (30.8% vs. 22.2%, p = 0.30), and the mechanical ventilation rate (15.4% vs. 11.1%, p = 0.50) were similar in patients receiving tocilizumab and those receiving anakinra. After propensity score matching, the 28-day mortality (29.1% vs. 30.4%, p = 1) and the rate of high-flow oxygen requirement (10.1% vs. 21.5%, p = 0.081) did not differ between patients receiving tocilizumab or anakinra. Secondary infection rates were similar between the tocilizumab and anakinra groups (6.3% vs. 9.2%, p = 0.44). Conclusion: Our study showed comparable efficacy and safety profiles of tocilizumab and anakinra to treat severe COVID-19.


Assuntos
COVID-19 , Humanos , Masculino , Idoso , SARS-CoV-2 , Proteína Antagonista do Receptor de Interleucina 1/uso terapêutico , Pontuação de Propensão , Estudos Retrospectivos , Tratamento Farmacológico da COVID-19 , Oxigênio
3.
Clin Neurol Neurosurg ; 229: 107727, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-37119654

RESUMO

OBJECTIVE: Most brain biopsies are performed using the frame-based stereotactic technique and several studies describe the time taken and rate of complications, often allowing an early discharge. In comparison, neuronavigation-assisted biopsies are performed under general anesthesia and their complications have been poorly described. We examined the complication rate and determined which patients will worsen clinically. METHODS: All adults who underwent a neuronavigation-assisted brain biopsy for a supratentorial lesion from Jan, 2015, to Jan, 2021, in the Neurosurgical Department of the University Hospital Center of Bordeaux, France, were analyzed retrospectively in accordance with the Strengthening the Reporting of Observational studies in Epidemiology (STROBE) statement. The primary outcome of interest was short-term (7 days) clinical deterioration. The secondary outcome of interest was the complication rate. RESULTS: The study included 240 patients. The median postoperative Glasgow score was 15. Thirty patients (12.6 %) showed acute postoperative clinical worsening, including 14 (5.8 %) with permanent neurological worsening. The median delay was 22 h after the intervention. We examined several clinical combinations that allowed early postoperative discharge. A preoperative Glasgow prognostic score of 15, Charlson Comorbidity Index ≤ 3, preoperative World Health Organization Performance Status ≤ 1, and no preoperative anticoagulation or antiplatelet treatment predicted postoperative worsening (negative predictive value, 96.3 %). CONCLUSION: Optical neuronavigation-assisted brain biopsies might require longer postoperative observation than frame-based biopsies. Based on strict preoperative clinical criteria, we consider to plan postoperative observation for 24 h a sufficient hospital stay for patients who undergo these brain biopsies.


Assuntos
Neoplasias Encefálicas , Neuronavegação , Adulto , Humanos , Neuronavegação/métodos , Neoplasias Encefálicas/patologia , Alta do Paciente , Estudos Retrospectivos , Biópsia/efeitos adversos , Biópsia/métodos , Encéfalo/diagnóstico por imagem , Encéfalo/cirurgia , Encéfalo/patologia
4.
Molecules ; 28(6)2023 Mar 08.
Artigo em Inglês | MEDLINE | ID: mdl-36985446

RESUMO

The chemical investigation of the n-hexane fraction from the methanol extract of the stem bark of Symphonia globulifera Linn f., which displayed good in vitro activity against Leishmania donovani NR-48822 promastigotes (IC50 43.11 µg/mL), led to the isolation of three previously unreported polyprenylated benzophenones, guttiferone U (1), V (2)/W (3), and a new tocotrienol derivative named globuliferanol (4), along with 11 known compounds (5-15). Their structures were elucidated based on their NMR and MS data. Some isolated compounds were assessed for both their antileishmanial and cytotoxic activities against L. donovani and Vero cells, respectively. Guttiferone K (5) exhibited the best potency (IC50 3.30 µg/mL), but with low selectivity to Vero cells. The n-hexane fraction and some compounds were also assessed in vitro for their antibacterial activity against seven bacterial strains. All the samples exhibited moderate to potent antibacterial activity (MICs ≤ 15.6 µg/mL) against at least one of the tested strains.


Assuntos
Antiprotozoários , Casca de Planta , Animais , Chlorocebus aethiops , Casca de Planta/química , Células Vero , Antiprotozoários/farmacologia , Antiprotozoários/análise , Antibacterianos/farmacologia , Antibacterianos/análise , Extratos Vegetais/farmacologia , Extratos Vegetais/análise
5.
Metabolites ; 13(2)2023 Feb 17.
Artigo em Inglês | MEDLINE | ID: mdl-36837917

RESUMO

The chemical investigation of the EtOH extract from the stem bark of Trichilia monadelpha (Thonn.) J. J. De Wilde afforded two new limonoids (1 and 2): 24-acetoxy-21,25-dihydroxy-21,23-epoxytirucall-7-en-3-one (1) and (6R)-1-O-deacetylkhayanolide E (2), together with eleven known compounds (3-13), including additional limonoids, flavonoids, triterpenoids, steroids, and fatty acid. Their structures were determined using 1D- and 2D-NMR experiments, ESI mass spectrometry, and single crystal X-ray diffraction analysis. The antibacterial and antiplasmodial activities of the extracts, sub-extracts, fractions, and some of the isolated compounds were evaluated in known pathogenic strains, including Staphylococcus aureus and Plasmodium falciparum. Fraction E (n-Hex/EtOAc 30:70, v/v) showed significant activity against S. aureus ATCC 25923 with a MIC value of 3.90 µg/mL, while one of its constituents (epicatechin (9)) exhibited significant activity with MIC values of 7.80 µg/mL. Interestingly, grandifotane A (6) (IC50 = 1.37 µM) and khayanolide D (5) (IC50 = 1.68 µM) were highly active against the chloroquine-sensitive/sulfadoxine-resistant plasmodium falciparum 3D7 strain, unlike their corresponding plant extract and fractions.

6.
Z Naturforsch C J Biosci ; 78(7-8): 275-283, 2023 Jul 26.
Artigo em Inglês | MEDLINE | ID: mdl-36803991

RESUMO

Crotofoligandrin (1), a new endoperoxide crotofolane-type diterpenoid was isolated from the dichloromethane/methanol (1:1) extract of the twigs of Croton oligandrus Pierre Ex Hutch along with thirteen known secondary metabolites including 1-nonacosanol (2), lupenone (3), friedelin (4), ß-sitosterol (5), taraxerol (6), (-)-hardwickiic acid (7), apigenin (8), acetyl aleuritolic acid (9), betulinic acid (10), fokihodgin C 3-acetate (11), D-mannitol (12), scopoletin (13) and quercetin (14). The structures of the isolated compounds were determined based on their spectroscopic data. The crude extract and the isolated compounds were assessed in vitro for their antioxidant, lipoxygenase, butyrylcholinesterase (BChE), urease and glucosidase inhibitory potentials. Compounds 1-3, and 10 displayed activities on all the performed bioassays. All the tested samples showed strong to significant antioxidant activity with compound 1 being the most potent (IC50 39.4 µM).


Assuntos
Croton , Diterpenos , Euphorbiaceae , Triterpenos , Croton/química , Butirilcolinesterase , Diterpenos/química , Diterpenos/farmacologia , Extratos Vegetais/farmacologia , Extratos Vegetais/química , Antioxidantes/farmacologia
7.
Nat Prod Res ; 37(23): 3935-3946, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36584290

RESUMO

The CH2Cl2-MeOH (1:1) extract of roots of Rumex nepalensis (Polygonaceae) displayed significant antibacterial activity against five bacterial strains with MICs (62.5-31.2 µg.mL-1). The EtOAc soluble fraction displayed a significant activity against the same strains with MICs (31.2-3.9 µg.mL-1). The purification of the EtOAc fraction yielded one new phenylisobenzofuranone derivative, berquaertiide (1), along with 19 known compounds (2-20). Their structures were elucidated based on the analysis of their NMR and MS data. All the isolated compounds were assessed for their antibacterial activity. Compound 2 was the most active against all the tested strains (15.7 to 1.9 µg.mL-1), while compounds 3-7 displayed good activities on at least one of the tested strains. In addition, seven analogues (21-27) of compound 2 were prepared and further assessed for their antibacterial activity. Compounds 26 and 27 were most active than 2 against Salmonella enterica and Klebsiella pneumoniae with MIC (125 and 15.6 µg.mL-1, respectively).


Assuntos
Emodina , Rumex , Emodina/farmacologia , Extratos Vegetais/química , Rumex/química , Bactérias , Antibacterianos/farmacologia , Antibacterianos/química , Testes de Sensibilidade Microbiana
9.
Microorganisms ; 10(12)2022 Dec 07.
Artigo em Inglês | MEDLINE | ID: mdl-36557676

RESUMO

During SARS-CoV-2 infection, eosinopenia may reflect a hyperactive immune response. In this study of hospitalized COVID-19 patients, we aimed to better understand the prognostic value of severe eosinopenia (absolute eosinophil count = 0 G/L) and decipher its underlying mechanisms. We retrospectively analyzed the records of COVID-19 patients hospitalized from March to June 2020 in three university hospitals in Marseille, France. We assessed the association between severe eosinopenia and a composite poor outcome in these patients, including the need for oxygen supplementation at >6 L/min, ICU admission, and in-hospital death. Among the 551 COVID-19 patients included in this study, severe eosinopenia was found in 228 (51%) of them on admission to hospital and was associated with a composite poor outcome using multivariate analysis (OR = 2.58; CI95 [1.77−3.75]; p < 0.0001). We found a significant association between the presence of severe eosinopenia on admission and the elevation in C-reactive protein, ferritin, IP-10, and suPAR. The histological findings in a series of 37 autopsies from patients who died from severe COVID-19 and presented with severe eosinopenia showed no pulmonary eosinophil trapping. Severe eosinopenia can be a reliable biomarker associated with a composite poor outcome in hospitalized COVID-19 adult patients. It may reflect the magnitude of immune hyperactivation during severe-to-critical COVID-19.

10.
J Nat Prod ; 85(12): 2731-2739, 2022 12 23.
Artigo em Inglês | MEDLINE | ID: mdl-36469853

RESUMO

Eleven previously undescribed arylnaphthalide lignans (1-11) together with seven known compounds were isolated from the whole plant of Justicia depauperata. The structures of 1-11 were elucidated by spectroscopic analysis and mass spectrometry. Compounds 6 (IC50 = 4.1 µM) and 9 (IC50 = 9.5 µM) displayed cytotoxic activity against the KB-3-1 cervical carcinoma cell line. This report provides an insight into the conformational equilibria occurring in the arylnaphthalide lignan constituents of this plant.


Assuntos
Acanthaceae , Medicamentos de Ervas Chinesas , Justicia , Lignanas , Lignanas/farmacologia , Lignanas/química , Justicia/química , Extratos Vegetais/química , Acanthaceae/química , Medicamentos de Ervas Chinesas/química , Estrutura Molecular
11.
Surg Radiol Anat ; 44(10): 1385-1390, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-36151224

RESUMO

PURPOSE: Ventricular drainage remains a usual but challenging procedure for neurosurgical trainees. The objective of the study was to describe reliable skin landmarks for ideal entry points (IEPs) to catheterize brain ventricles via frontal and parieto-occipital approaches. METHODS: We included 30 subjects who underwent brain MRI and simulated the ideal catheterization trajectories of lateral ventricles using anterior and posterior approaches and localized skin surface IEPs. The optimal frontal target was the interventricular foramen and that for the parieto-occipital approach was the atrium. We measured the distances between these IEPs and easily identifiable skin landmarks. RESULTS: The frontal IEP was localized to 116.8 ± 9.3 mm behind the nasion on the sagittal plane and to 39.7 ± 4.9 mm lateral to the midline on the coronal plane. The ideal catheter length was estimated to be 68.4 ± 6.4 mm from the skin surface to the interventricular foramen. The parieto-occipital point was localized to 62.9 ± 7.4 mm above the ipsilateral tragus on the coronal plane and to 53.1 ± 9.1 mm behind the tragus on the axial plane. The ideal catheter length was estimated to be 48.3 ± 9.6 mm. CONCLUSION: The IEP for the frontal approach was localized to 11 cm above the nasion and 4 cm lateral to the midline. The IEP for the parieto-occipital approach was 5.5 cm behind and 6 cm above the tragus. These measurements lightly differ from the classical descriptions of Kocher's point and Keen's point and seem relevant to neurosurgical practice while using an orthogonal insertion.


Assuntos
Ventrículos Cerebrais , Ventriculostomia , Humanos , Ventriculostomia/métodos , Ventrículos Cerebrais/diagnóstico por imagem , Radiografia , Ventrículos Laterais/cirurgia , Drenagem
12.
Surg Radiol Anat ; 44(6): 941-946, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35526190

RESUMO

PURPOSE: In a previous cadaveric work, we identified and described useful and reproducible surface skin landmarks to lateral sulcus, central sulcus and preoccipital notch. Potential limitations of this cadaveric study have been raised. Thus, the objective of this study was to confirm radiologically the accuracy of these previously described surface skin landmarks on brain magnetic resonance imaging (MRI) of healthy subjects. METHODS: Healthy adult volunteers underwent a high-resolution brain MRI and measurements of the orthogonal skin projection (OSP) of the anterior sylvian point (AsyP), the superior Rolandic point (SroP) and the parietooccipital sulcus were made from nasion, zygomatic bone and inion, respectively. These measures were compared to our previous cadaveric findings. RESULTS: Thirty-one healthy volunteers were included. ASyP was 33 ± 2 mm above the zygomatic arch, and 32.3 ± 3 mm behind the orbital rim. The lateral sulcus was 63.5 ± 4 mm above the tragus. The SRoP was 196.9 ± 6 mm behind the nasion. The superior point of the parietooccipital sulcus was 76.0 ± 4 mm above the inion. These measurements are comparable to our previously described cadaveric findings. CONCLUSION: We here described three useful, simple and reproducible surface skin landmarks to lateral, central and parietooccipital sulci. Knowledge of these major landmarks is mandatory for Neurosurgical practice, especially in an emergency setting.


Assuntos
Córtex Cerebral , Cérebro , Adulto , Cadáver , Humanos , Imageamento por Ressonância Magnética , Lobo Occipital/diagnóstico por imagem
13.
Neurospine ; 19(1): 108-117, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-35378585

RESUMO

OBJECTIVE: Spinal cord tumors constitute a small part of spinal surgery owing to their rarity. This retrospective study describes their current management. METHODS: Forty-eight patients were treated for an intramedullary tumor between 2014 and 2020 at a single institution. Patients' files were retrospectively studied. We detailed clinical status according to neurological deficit and ambulatory ability using the modified McCormick Scale, radiological features like number of levels, associated syringomyelia, surgical technique with or without intraoperative electrophysiological monitoring, pathological findings, and postoperative outcome. RESULTS: The median age of this population was 43 years, including 5 patients under 18 years. The median delay before first neurosurgical contact was 3 months after the first clinical complaint. Treatment was gross total resection in 43.8%, subtotal resection in 50.0%, and biopsy in 6.2%. A laminectomy was performed for all the patients except 2 operated using the laminoplasty technique. Pathological findings were ependymoma in 43.8%, hemangioblastoma in 20.8%, and pilocytic astrocytoma in 10.4%. Six patients were reoperated for a tumor recurrence less than 2 years after the first surgical resection. One patient was reoperated for a postoperative cervical kyphosis. CONCLUSION: Intramedullary tumors are still a challenging disease and they are treated by various surgical techniques. They must be managed in a specialized center including a trained surgical, radiological, electrophysiological, and pathological team. Arthrodesis must be discussed before performing extensive laminectomy to avoid postoperative kyphosis.

14.
Lupus ; 31(6): 744-753, 2022 May.
Artigo em Inglês | MEDLINE | ID: mdl-35341372

RESUMO

Aortitis is a classic manifestation of large vessel vasculitis. Antiphospholipid syndrome (APS), sometimes known as Hughes syndrome, is an acquired autoimmune disorder that manifests clinically as recurrent venous or arterial thrombosis. Patients with APS may also suffer from various underlying diseases, most frequently systemic lupus erythematosus (SLE). Catastrophic antiphospholipid syndrome (CAPS) is a rare but serious complication of APS characterized by failure of several organs due to diffuse microcirculatory thrombi. Its main manifestations involve the kidneys, lungs, heart and central nervous system, and require early diagnosis and rapid therapeutic management. While APS can affect virtually any blood vessel, aortitis is not a known symptom of APS. We report the case of a 36-year-old patient with APS and SLE who presented with CAPS during pregnancy, with no concomitant SLE flare. The first manifestation of CAPS was aortitis, preceding renal, cardiac and haematological manifestations. The outcome was favourable with combined treatment including corticosteroids, anticoagulants, plasma exchange and rituximab. We then carried out a literature search for papers describing the presence of aortitis in APS and/or SLE. In the cases of aortic involvement identified in the literature, including another case of CAPS, the occurrence of aortitis in SLE, often associated with the presence of antiphospholipid antibodies/APS, suggests that aortitis should be considered as an under-recognized manifestation and potential non-criterion feature of APS.


Assuntos
Síndrome Antifosfolipídica , Aortite , Lúpus Eritematoso Sistêmico , Trombose , Adulto , Anticorpos Antifosfolipídeos , Síndrome Antifosfolipídica/complicações , Síndrome Antifosfolipídica/diagnóstico , Aortite/complicações , Aortite/etiologia , Feminino , Humanos , Lúpus Eritematoso Sistêmico/complicações , Lúpus Eritematoso Sistêmico/diagnóstico , Microcirculação , Gravidez
15.
Neuroepidemiology ; 56(4): 250-260, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35320802

RESUMO

BACKGROUND: The Gironde Central Nervous System (CNS) Tumor Registry, in collaboration with the French National Cancer Institute, is the largest population-based registry focused exclusively on primary CNS tumors in France and represents a population of 1.62 million. This report focuses on ependymal tumors to refine current knowledge and provide up-to-date data on the epidemiology of these rare tumors. MATERIAL AND METHODS: All of the ependymal tumors were extracted from the Gironde CNS Tumor Registry for the years 2000-2018. Demographic and clinical characteristics, incidence rates, and time trends as well as survival outcomes were analyzed. RESULTS: One hundred forty-four ependymal tumors were retrieved, which represented 2.3% of all the CNS tumors recorded in the same period. Histological subtype was significantly dependent on age and topography in the CNS. The median age at diagnosis was 46 years. The annual incidence rates varied between 0.15/100,000 (2004) and 0.96/100,000 (2016), with a significant increase over the study period by 4.67% per year. Five-year and 10-year OS rates were 87% and 80%, respectively. CONCLUSION: An increase in the incidence of ependymal tumors was observed over the past two decades. Further studies are needed to confirm this result and provide etiological clues.


Assuntos
Neoplasias Encefálicas , Neoplasias do Sistema Nervoso Central , Neoplasias Encefálicas/epidemiologia , Neoplasias do Sistema Nervoso Central/epidemiologia , França/epidemiologia , Humanos , Incidência , Sistema de Registros
16.
J Med Virol ; 94(7): 3169-3175, 2022 07.
Artigo em Inglês | MEDLINE | ID: mdl-35277862

RESUMO

Dexamethasone has demonstrated efficacy in reducing mortality in COVID-19. However, its practical use is badly defined. We aimed to investigate factors associated with dexamethasone efficacy in real life. Our retrospective study was conducted in two university hospitals between September and November 2020 and included all the consecutive hospitalized patients with a laboratory-confirmed SARS-CoV-2 infection assessed by RT-PCR, treated with intravenous dexamethasone (6 mg/day). Among 111 patients, 10.6% necessitated a transfer into the intensive care unit (ICU) and the 28-day mortality rate was 17.1%. The 28-day mortality rate was significantly lower in patients who demonstrated improvement at 48 h (hazard ratio [HR]: 0.17, 95% confidence interval [CI]: 0.04-0.78, p = 0.02) and 96 h (HR: 0.07, 95% CI: 0.02-0.31, p = 0.0005) after dexamethasone initiation. Apart from well-known risk factors (age, hypertension, active cancer, severe lesions on chest computed tomography [CT] scan), we found that a high viral load in nasopharyngeal swab (Cycle threshold <30) at dexamethasone initiation was associated with higher 28-day mortality (66.6% vs. 36.7%, p = 0.03). Patients who did not receive antibiotics at dexamethasone initiation had a higher rate of transfer into the ICU (55.6% vs. 23.5%, p = 0.045) with a trend towards higher mortality in case of severe or critical lesions on CT scan (75.0% vs. 25.0%, p = 0.053). Patients who did not improve within 2-4 days after steroid initiation have a bad prognosis and should receive additional anti-inflammatory drugs. Our data suggest better efficacy of dexamethasone in patients with a low or negative viral load, receiving broad-spectrum antibiotics.


Assuntos
Tratamento Farmacológico da COVID-19 , Antibacterianos/uso terapêutico , Estudos de Coortes , Dexametasona/uso terapêutico , Humanos , Estudos Retrospectivos , SARS-CoV-2
17.
World Neurosurg ; 157: 218-232.e14, 2022 01.
Artigo em Inglês | MEDLINE | ID: mdl-34547528

RESUMO

OBJECTIVE: Sacral anterior root stimulation (SARS) was developed 40 years ago to restore urinary and bowel functions to individuals with spinal cord injury. Mostly used to restore lower urinary tract function, SARS implantation is coupled with sacral deafferentation to counteract the problems of chronic detrusor sphincter dyssynergia and detrusor overactivity. In this article, we systematically review 40 years of SARS implantation and assess the medical added value of this approach in accordance with the PRISMA guidelines. We identified 4 axes of investigation: 1) impact on visceral functions, 2) implantation safety and device reliability, 3) individuals' quality of life, and 4) additional information about the procedure. METHODS: A systematic review was performed. Three databases were consulted: PubMed, EBSCOhost, and Pascal. A total of 219 abstracts were screened and 38 articles were retained for analysis (1147 implantations). RESULTS: The SARS technique showed good clinical results (85.9% of individuals used their implant for micturition and 67.9% to ease bowel movements) and improved individual quality of life. Conversely, several sources of complications were reported after implantation (e.g., surgical complications and failure). CONCLUSIONS: Despite promising results, a decline in implantations was observed. This decline can be linked to the complication rate, as well as to the development of new therapeutics (e.g., botulinum toxin) and directions for research (spinal cord stimulation) that may have an impact on people. Nevertheless, the lack of alternatives in the short-term suggests that the SARS implant is still relevant for the restoration of visceral functions after spinal cord injury.


Assuntos
Terapia por Estimulação Elétrica/métodos , Traumatismos da Medula Espinal/complicações , Traumatismos da Medula Espinal/terapia , Bexiga Urinaria Neurogênica/etiologia , Bexiga Urinaria Neurogênica/terapia , Eletrodos Implantados , Humanos , Medula Espinal , Raízes Nervosas Espinhais/fisiopatologia , Resultado do Tratamento
18.
Nat Prod Res ; 36(18): 4661-4671, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-34852702

RESUMO

Chemical investigation of Allophylus africanus P. Beauv fruits led to the isolation of a new δ-tocotrienol, 3α-hydroxy-δ-tocotrienol (1) together with eight known compounds (2-9). Compound (1) was allylated (1a) and prenylated (1 b and 1c) to give three new semi-synthesized derivatives which were fully characterized as: 6-O-allyl-3α-hydroxy-δ-tocotrienol (1a), 6-O-prenyl-3α-hydroxy-δ-tocotrienol (1 b) and 6-O,5-C-diprenyl-3α-hydroxy-δ-tocotrienol (1c). The structures of compounds were established using comprehensive spectroscopic analysis including UV, MS, 1 D NMR, 2 D NMR and by comparison with the corresponding literature data. Compound (1) and its semi-synthetic derivatives (1a-c) were tested for their antioxydant activity using DPPH radical scavenging assay and also for their cytotoxicity using human cervix carcinoma KB-3-1 cell lines. The results showed that compound (1) exhibited antioxidant activity with an IC50 value of 0.25 µM compared to the reference control trolox (26 µM); and good cytotoxic activity with IC50 values of 97 µM compared to the reference (+)-griseofulvin (IC50 between17-21 µM).


Assuntos
Antioxidantes , Sapindaceae , Antioxidantes/química , Antioxidantes/farmacologia , Feminino , Humanos , Sementes , Vitamina E/análogos & derivados
19.
Ann Hematol ; 100(11): 2799-2803, 2021 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-34518918

RESUMO

Specificities of COVID-19 disease course in patients with haematologic malignancies are still poorly studied. So, we aimed to compare patients with haematologic malignancies to patients without malignancies, matched by sex and age and hospitalised for COVID-19 at the same time and in the same centre. Among 25 patients with haematologic malignancies, we found that mortality (40% versus 4%, p < 0.01), number of days with RT-PCR positivity (21.2 ± 15.9 days [range, 3-57] versus 7.4 ± 5.6 days [range, 1-24], p < 0.01), maximal viral load (mean minimal Ct, 17.2 ± 5.2 [range, 10-30] versus 26.5 ± 5.1 [range, 15-33], p < 0.0001) and the delay between symptom onset and clinical worsening (mean time duration between symptom onset and first day of maximum requirement in inspired oxygen fraction, 14.3 ± 10.7 days versus 9.6 ± 3.7 days, p = 0.0485) were higher than in other patients. COVID-19 course in patients with haematologic malignancies has a delayed onset and is more severe with a higher mortality, and patients may be considered as super-spreaders. Clinicians and intensivists need to be trained to understand the specificity of COVID-19 courses in patients with haematological malignancies.


Assuntos
COVID-19/epidemiologia , Neoplasias Hematológicas/epidemiologia , Leucemia/epidemiologia , Linfoma/epidemiologia , Mieloma Múltiplo/epidemiologia , SARS-CoV-2/patogenicidade , Adulto , Idoso , Idoso de 80 Anos ou mais , COVID-19/terapia , COVID-19/virologia , Doenças Cardiovasculares/epidemiologia , Comorbidade , Diabetes Mellitus/epidemiologia , Feminino , Mortalidade Hospitalar , Humanos , Masculino , Desnutrição/epidemiologia , Pessoa de Meia-Idade , SARS-CoV-2/isolamento & purificação , Fumar/epidemiologia , Resultado do Tratamento , Carga Viral
20.
Z Naturforsch C J Biosci ; 76(7-8): 285-290, 2021 Jul 27.
Artigo em Inglês | MEDLINE | ID: mdl-34218550

RESUMO

The phytochemical investigation of Tarenna grandiflora led to the isolation of 18 known compounds of which were four flavones, three anthraquinones, one phenyl propanoic derivative, five triterpenoids, four steroids and a mixture of glucose. Luteolin (1) and soranjidiol (6) were allylated and/or prenylated to give four new semisynthesized derivatives which were fully characterized as 7,3',4'-O-triallylluteolin (1a), luteolin-7,3',4'-O-triprenyls (1b), luteolin-5,7,3',4'-O-tetraprenyls (1c) and 6-O-allylsoranjidiol (6a). Their structures were established using spectroscopic analysis including 1D, 2D NMR and MS data. The cytotoxic, antioxidant and antimicrobial activities of extracts, fractions, isolated compounds and semi-synthesized derivatives were evaluated. The petroleum ether and EtOAc extracts exhibited good cytotoxic potency on KB-3-1 cell line with IC50 of >0.1 and 0.025 mg/mL respectively, while compounds 1b and 11 were the most active (IC50 > 0.0001 M). Compounds 1 and 3 showed the best antioxidant activities (45.5 and 55.8 µM); while compounds 9 and 12 showed the best antibacterial activities with MICs values ranges from 8.55 to 132 µM.


Assuntos
Antibacterianos/isolamento & purificação , Antioxidantes/isolamento & purificação , Compostos Fitoquímicos/isolamento & purificação , Rubiaceae/química , Antibacterianos/química , Antibacterianos/farmacologia , Antioxidantes/química , Antioxidantes/farmacologia , Bactérias/classificação , Bactérias/efeitos dos fármacos , Compostos de Bifenilo/metabolismo , Linhagem Celular Tumoral , Sobrevivência Celular/efeitos dos fármacos , Cromatografia/métodos , Humanos , Espectrometria de Massas/métodos , Testes de Sensibilidade Microbiana/métodos , Estrutura Molecular , Oxirredução/efeitos dos fármacos , Compostos Fitoquímicos/química , Compostos Fitoquímicos/farmacologia , Picratos/metabolismo , Casca de Planta/química , Folhas de Planta/química , Caules de Planta/química
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...