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1.
Cancers (Basel) ; 15(22)2023 Nov 09.
Artículo en Inglés | MEDLINE | ID: mdl-38001599

RESUMEN

Meningiomas are the most prevalent primary intracranial tumors. The majority are benign but can undergo dedifferentiation into advanced grades classified by World Health Organization (WHO) into Grades 1 to 3. Meningiomas' tremendous variability in tumor behavior and slow growth rates complicate their diagnosis and treatment. A deeper comprehension of the molecular pathways and cellular microenvironment factors implicated in meningioma survival and pathology is needed. This review summarizes the known genetic and epigenetic aberrations involved in meningiomas, with a focus on neurofibromatosis type 2 (NF2) and non-NF2 mutations. Novel potential biomarkers for meningioma diagnosis and prognosis are also discussed, including epigenetic-, RNA-, metabolomics-, and protein-based markers. Finally, the landscape of available meningioma-specific animal models is overviewed. Use of these animal models can enable planning of adjuvant treatment, potentially assisting in pre-operative and post-operative decision making. Discovery of novel biomarkers will allow, in combination with WHO grading, more precise meningioma grading, including meningioma identification, subtype determination, and prediction of metastasis, recurrence, and response to therapy. Moreover, these biomarkers may be exploited in the development of personalized targeted therapies that can distinguish between the 15 diverse meningioma subtypes.

2.
Int J Infect Dis ; 118: 83-88, 2022 May.
Artículo en Inglés | MEDLINE | ID: mdl-35218928

RESUMEN

BACKGROUND: This study examines the impact of the COVID-19 pandemic on health care-associated infection (HAI) incidence in low- and middle-income countries (LMICs). METHODS: Patients from 7 LMICs were followed up during hospital intensive care unit (ICU) stays from January 2019 to May 2020. HAI rates were calculated using the International Nosocomial Infection Control Consortium (INICC) Surveillance Online System applying the Centers for Disease Control and Prevention's National Healthcare Safety Network (CDC-NHSN) criteria. Pre-COVID-19 rates for 2019 were compared with COVID-19 era rates for 2020 for central line-associated bloodstream infections (CLABSIs), catheter-associated urinary tract infections (CAUTIs), ventilator-associated events (VAEs), mortality, and length of stay (LOS). RESULTS: A total of 7,775 patients were followed up for 49,506 bed days. The 2019 to 2020 rate comparisons were 2.54 and 4.73 CLABSIs per 1,000 central line days (risk ratio [RR] = 1.85, p = .0006), 9.71 and 12.58 VAEs per 1,000 mechanical ventilator days (RR = 1.29, p = .10), and 1.64 and 1.43 CAUTIs per 1,000 urinary catheter days (RR = 1.14; p = .69). Mortality rates were 15.2% and 23.2% for 2019 and 2020 (RR = 1.42; p < .0001), respectively. Mean LOS for 2019 and 2020 were 6.02 and 7.54 days (RR = 1.21, p < .0001), respectively. DISCUSSION: This study documents an increase in HAI rates in 7 LMICs during the first 5 months of the COVID-19 pandemic and highlights the need to reprioritize and return to conventional infection prevention practices.


Asunto(s)
COVID-19 , Infección Hospitalaria , Neumonía Asociada al Ventilador , Infecciones Urinarias , COVID-19/epidemiología , Infección Hospitalaria/epidemiología , Infección Hospitalaria/prevención & control , Atención a la Salud , Países en Desarrollo , Femenino , Humanos , Unidades de Cuidados Intensivos , Masculino , Pandemias , Neumonía Asociada al Ventilador/epidemiología , Estudios Prospectivos , Infecciones Urinarias/epidemiología
3.
Acute Med Surg ; 8(1): e696, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34745637

RESUMEN

Stroke is considered as the first cause of neurological dysfunction and second cause of death worldwide. Recombinant tissue plasminogen activator is the only chemical treatment for ischemic stroke approved by the US Food and Drug Administration. It was the only standard of care for a long time with a very narrow therapeutic window, which usually ranges from 3 to 4.5 h of stroke onset; until 2015, when multiple trials demonstrated the benefit of mechanical thrombectomy during the first 6 h. In addition, recent trials showed that mechanical thrombectomy can be beneficial up to 24 h if the patients meet certain criteria including the presence of magnetic resonance imaging/computed tomography perfusion mismatch, which allows better selectivity and higher recruitment of eligible stroke patients. However, magnetic resonance imaging/computed tomography perfusion is not available in all stroke centers. Hence, physicians need other easy and available diagnostic tools to select stroke patients eligible for mechanical thrombectomy. Moreover, stroke management is still challenging for physicians, particularly those dealing with patients with "wake-up" stroke. The resulting brain tissue damage of ischemic stroke and the subsequent pathological processes are mediated by multiple molecular pathways that are modulated by inflammatory markers and post-transcriptional activity. A considerable number of published works suggest the role of inflammatory and cardiac brain-derived biomarkers (serum matrix metalloproteinase, thioredoxin, neuronal and glial markers, and troponin proteins) as well as different biomarkers including the emerging roles of microRNAs. In this review, we assess the accumulating evidence regarding the current status of acute ischemic stroke diagnostic biomarkers that could guide physicians for better management of stroke patients. Our review could give an insight into the roles of the different emerging markers and microRNAs that can be of high diagnostic value in patients with stroke. In fact, the field of stroke research, similar to the field of traumatic brain injury, is in immense need for novel biomarkers that can stratify diagnosis, prognosis, and therapy.

4.
Surg Neurol Int ; 12: 484, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34754534

RESUMEN

BACKGROUND: The presence of retained foreign bodies in the spinal canal has been reported in the literature. They are attributed to retained pieces of medical equipment after surgery, or, following trauma, to residual bullets, glass fragments, or knife blades. Although some retained materials do not cause any neurological deficits in the short run, others may become symptomatic months later. CASE DESCRIPTION: A 2-year-old male presented with a history of intermittent fever and mild lower extremity weakness. Notably, the original infectious workup was negative. However, a noncontrast CT scan later documented a needle-shaped foreign body in the spinal canal at the T10 level. During the T10 laminectomy, a needle (i.e. from a medical syringe) was removed, the patient remained neurologically intact. The foreign body turned out to be a medical syringe needle tip. CONCLUSION: A 2-year-old male presented with fevers and mild lower extremity weakness attributed to an intraspinal needle tip found utilizing CT at the T10 level. T10 laminectomy allowed for removal of a small needle tip. This shows the importance of removing retained spinal foreign bodies to avoid further/future neurological injury, and/or the potential risks/complications of foreign body migration/sequestration.

5.
Global Spine J ; : 21925682211049167, 2021 Sep 27.
Artículo en Inglés | MEDLINE | ID: mdl-34579596

RESUMEN

STUDY DESIGN: Randomized experimental study. OBJECTIVE: Compared to able-bodied people, patients with paraplegia due to thoracic spinal cord injury (SCI) are at an increased risk of heat illnesses during exercise due to impaired thermoregulatory responses. To overcome this limitation, we investigated the performance of three phase change material (PCM) cooling vests of different melting temperatures (Eijsvogels, #49) and coverage area of the trunk. METHODS: Sixteen participants were divided into three groups according to their injury level. All were tested for V20 full vest (20°C Tm, 75% coverage). Mid-thoracic and high-thoracic groups were tested for V14 vest (14°C Tm, 75% coverage). The mid-thoracic group was tested for V20 half vest (20°C Tm, 50% coverage). The participants performed a 30-min arm-crank exercise followed by a recovery period inside a controlled hot climatic chamber. The heart rate, segmental skin (Tskin), and core temperature (Tcore) values were recorded, and subjective questionnaires were taken. RESULTS: Compared to no vest (NV) test, all the vests showed an effective decrease in Tskin values of the trunk. However, the decrease in Tskin was not enough to induce a significant decrease in Tcore in all three groups. Mid-thoracic and low-thoracic groups showed a reduction in the increasing Tcore by the end of the exercise and recovery period. Finally, the level of thermal comfort was enhanced for the three groups. CONCLUSION: The effectiveness of cooling vests for persons with paraplegia is dependent on injury level and thus the ratio of sensate to insensate skin. Future studies necessitate the investigation of the cooling effects of PCM vests at a lower Tm with a larger sample size.

6.
J Integr Neurosci ; 20(2): 463-469, 2021 Jun 30.
Artículo en Inglés | MEDLINE | ID: mdl-34258948

RESUMEN

Meningiomas are amongst the most commonly encountered intracranial tumors. The majority of these tumors arise intracranially, and the remaining incidents occur along the spinal cord. Meningiomas tend to grow gradually, with many tumors arising in inaccessible locations. Such sporadic behavior poses a therapeutic challenge to clinicians, causing incomplete tumor resections that often lead to recurrence. Therefore, ongoing research seeks to find alternative systematic treatments for meningiomas, with gene-based therapeutics of high interest. Subsequently, genetic studies characterized frequent somatic mutations in NF2, TRAF7, KLF4, AKT1, SMO, and PIK3CA. These genes are communally exhibited in 80% of sporadic meningiomas. In addition, other genes such as the DUSP family, the NR4 family, CMKOR, and FOSL2, have been identified as key players in spinal meningiomas. In this perspective, we aim to investigate current genetic-based studies, with the ongoing research mainly focused on the above NF2, TRAF7, KLF4, AKT1, SMO, and PIK3CA genes and their involved pathways. In addition, this perspective can serve as a potential cornerstone for future genetic analyses of meningioma cases.


Asunto(s)
Neoplasias Meníngeas/tratamiento farmacológico , Neoplasias Meníngeas/genética , Meningioma/tratamiento farmacológico , Meningioma/genética , Humanos
7.
J Integr Neurosci ; 20(2): 489-497, 2021 Jun 30.
Artículo en Inglés | MEDLINE | ID: mdl-34258951

RESUMEN

Most of the debilitating conditions following aneurysmal subarachnoid hemorrhage result from symptomatic cerebral vasospasm and delayed cerebral ischemia. Several scales are being used, but they still lack objectivity and fail to quantify complications considered essential for prognostication routine use of biomarkers to predict complications and outcomes after aneurysmal rupture is still experimental. Degradomics were studied extensively in traumatic brain injury, but there is no discussion of these biomarkers related to aneurysmal subarachnoid hemorrhage. Degradomics involve the activation of proteases that target specific substrates and generate specific protein fragments called degradomes. While the proteolytic activities constitute the pillar of development, growth, and regeneration of tissues, dysregulated proteolysis resulting from pathological conditions like aneurysmal subarachnoid hemorrhage ends up in apoptotic processes and necrosis. To our knowledge, this is the first overview that lists a panel of degradomics with cut-off values in serum and cerebrospinal fluid, where specificity and sensitivity are only found in Kallikrein 6, Ubiquitin C Terminal Hydrolase 1 and Alpha-II-Spectrin.


Asunto(s)
Biomarcadores/metabolismo , Aneurisma Intracraneal/diagnóstico , Aneurisma Intracraneal/metabolismo , Péptido Hidrolasas/metabolismo , Proteómica , Hemorragia Subaracnoidea/diagnóstico , Hemorragia Subaracnoidea/metabolismo , Biomarcadores/sangre , Biomarcadores/líquido cefalorraquídeo , Humanos , Aneurisma Intracraneal/complicaciones , Hemorragia Subaracnoidea/complicaciones
8.
Clin Neurol Neurosurg ; 207: 106799, 2021 08.
Artículo en Inglés | MEDLINE | ID: mdl-34304068

RESUMEN

Spine fusion surgery is commonly performed for diverse indications, the most frequent one being degenerative spine diseases. Despite the growing importance of this surgery, there is limited evidence concerning the effects of drugs on the process of spine fusion and healing. While asymptomatic sometimes, nonunion of the spine can have tremendous repercussions on the patients' quality of life and the healthcare system rendering it an "expensive complication". This literature review identifies the role of some perioperative drugs in spine fusion and reveals their potential role in pseudarthrosis of the spine. This review also benefits spine surgeons looking for current evidence-based practices. We reviewed the data related to nonsteroidal anti-inflammatory drugs (NSAIDs), corticosteroids, vancomycin, bisphosphonates, proton pump inhibitors (PPIs), pregabalin, and opioids. From the available experimental and clinical studies, we conclude that bisphosphonates might positively influence the process of spine fusion, while steroids and vancomycin have shown variable effects, and the remaining medications likely disturb healing and union of the spine. We recommend spine surgeons be cautious about the drugs they resort to in the critical perioperative period until further clinical studies prove which drugs are safe to be used.


Asunto(s)
Fracturas no Consolidadas/inducido químicamente , Complicaciones Posoperatorias/inducido químicamente , Fusión Vertebral/efectos adversos , Corticoesteroides/efectos adversos , Analgésicos Opioides/efectos adversos , Antiinflamatorios no Esteroideos/efectos adversos , Difosfonatos/efectos adversos , Medicina Basada en la Evidencia , Humanos , Pregabalina/efectos adversos , Inhibidores de la Bomba de Protones/efectos adversos , Vancomicina/efectos adversos
10.
Interv Neuroradiol ; 26(5): 547-556, 2020 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-32741229

RESUMEN

BACKGROUND: Stent-assisted coil embolization of ruptured wide-necked aneurysms is a controversial treatment modality due to concerns on the peri-procedural safety of anti-platelet therapy in the setting of acute subarachnoid hemorrhage. Our aim was to systematically review the literature on stent-assisted coil embolization of acutely ruptured wide-neck aneurysms to calculate the pooled prevalence of clinical outcome, thromboembolic and hemorrhagic complication rates and overall mortality. METHODS: We searched PubMed and Google Scholar for articles published between 2009 and 2019 and stratified selected articles based on risk of publication bias. Data on thromboembolic and hemorrhagic complications, clinical outcomes and mortality rates were analyzed using quality-effects model and double arcsine transformation. RESULTS: 24 articles were included featuring a total of 1582 patients. Thromboembolic and hemorrhagic complication rates were witnessed in 9.1% [95% CI: 6.0% - 12.7%; I2 = 72.8%] and 8.7% [95% CI: 5.4 - 12.6%; I2 = 77.2%] of patients, respectively. 245 patients received external ventricular drains, of which 33 (13.5%) had EVD-related hemorrhages. Total complication rate was 20.8% [95% CI: 14.2 - 28.1%; I2 = 87.0%]. 57% of aneurysms were completely occluded and a favorable clinical outcome was reported in 74.7% [95% CI: 66.4 - 82.2%; I2 = 86.0] of patients. Overall mortality rate came at 7.8% [95% CI: 4.8 - 11.6%; I2 = 76.9%]. CONCLUSION: Stent-assisted coiling of ruptured intracranial aneurysm is a technically feasible procedure with controlled thromboembolic complication rate but may be associated with higher hemorrhagic and total complication rates compared to coiling alone. While stent-assisted coiling of ruptured wide-necked aneurysm seems to yield a lower rate of favorable clinical outcome, overall mortality is comparable to that of endovascular coiling alone.


Asunto(s)
Aneurisma Roto/terapia , Embolización Terapéutica/métodos , Aneurisma Intracraneal/terapia , Stents , Hemorragia Subaracnoidea/terapia , Aneurisma Roto/diagnóstico por imagen , Aneurisma Roto/epidemiología , Hemorragia Cerebral/epidemiología , Hemorragia Cerebral/etiología , Humanos , Aneurisma Intracraneal/diagnóstico por imagen , Aneurisma Intracraneal/epidemiología , Inhibidores de Agregación Plaquetaria/uso terapéutico , Prevalencia , Hemorragia Subaracnoidea/diagnóstico por imagen , Hemorragia Subaracnoidea/epidemiología , Tromboembolia/epidemiología , Tromboembolia/etiología
11.
J Therm Biol ; 91: 102634, 2020 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-32716876

RESUMEN

Persons with paraplegia (PA) from thoracic spinal cord injury (T1-T12) are prone to thermal stress during exercise due to impaired thermoregulation. This study evaluates the effectiveness of phase change material (PCM) cooling vests on persons with PA of different levels of injury during exercise in hot exposure. Sixteen participants were recruited and divided to three groups based on injury level; high-thoracic T1-T3, mid-thoracic T4-T8, and low thoracic T9-T12 to perform a 30-min arm-crank exercise at a 30 °C room condition. Two types of PCM vests at melting temperature of 20 °C were tested: i) V1 with PCM covering the trunk of 3.4 kg overall vest mass and ii) V2 with PCM covering chest and upper back of 2.17 kg overall vest mass. High thoracic and low-thoracic groups performed NV and V1 tests; whereas, mid-thoracic group performed NV, V1, and V2 tests. Heart rate, core, and skin temperatures were monitored during 15-min preconditioning, 30-min exercise, and 15-min recovery. In addition, thermal comfort, sensation, skin wettedness, and perceived exertion were recorded during exercise only. The main findings were that the effectiveness of the cooling vest was dependent on injury level and portion of sensate skin of trunk covered by the PCM packets. Rise in core temperature (ΔTcr) was reduced significantly for the low-thoracic group during exercise and recovery (ΔTcr=0.41°C, 0.26°C for NV and V1; respectively, p<0.05). For the mid-thoracic group, both V1 (p = 0.001) and V2 (p = 0.008) were effective in reducing ΔTcr compared to the NV test at the end of the recovery period (0.74°C,0.42°C,0.56°C, for NV, V1 and V2; respectively). For the high-thoracic group, V1 was not effective in reducing core temperature (p>0.05). For the mid-thoracic group, V2 at 36% lower mass significantly improved thermal comfort (p = 0.0004) compared to the NV test and was as effective compared to V1 in reducing core temperature.


Asunto(s)
Temperatura Corporal , Paraplejía/fisiopatología , Ropa de Protección/normas , Traumatismos de la Médula Espinal/fisiopatología , Adulto , Ejercicio Físico , Femenino , Frecuencia Cardíaca , Calor , Humanos , Masculino , Vértebras Torácicas/lesiones
12.
Clin Neurol Neurosurg ; 197: 106076, 2020 10.
Artículo en Inglés | MEDLINE | ID: mdl-32717559

RESUMEN

Hypothalamic hamartomas (HH) are rare, non-neoplastic heterotopic tissues which contains normal neurons and glia including oligodendrocytes and fibrillary astrocytes but in an abnormal distribution. They arise from the floor of the third ventricle, tuber cinereum, or mammillary bodies. Estimated incidence ranges from 1 in 50,000-1 in 1,000,000. Hypothalamic hamartomas are associated with different clinical presentations including various types of seizures, most characteristically; the gelastic seizures, precocious puberty, cognitive impairment, and behavioral changes. In this review, the authors discuss advancements in different diagnostic elements of hypothalamic hamartoma; including clinical features, EEG findings, and neuroimaging techniques. Moreover, different classifications described in the literature will be discussed.


Asunto(s)
Encéfalo/diagnóstico por imagen , Hamartoma/diagnóstico , Enfermedades Hipotalámicas/diagnóstico , Convulsiones/etiología , Encéfalo/fisiopatología , Hamartoma/complicaciones , Hamartoma/diagnóstico por imagen , Hamartoma/fisiopatología , Humanos , Enfermedades Hipotalámicas/complicaciones , Enfermedades Hipotalámicas/diagnóstico por imagen , Enfermedades Hipotalámicas/fisiopatología , Imagen por Resonancia Magnética , Neuroimagen , Convulsiones/diagnóstico por imagen , Convulsiones/fisiopatología
13.
Clin Neurol Neurosurg ; 197: 106077, 2020 10.
Artículo en Inglés | MEDLINE | ID: mdl-32717560

RESUMEN

Hypothalamic hamartomas (HH) are rare, non-neoplastic heterotopic tissues which contains normal neurons and glia including oligodendrocytes and fibrillary astrocytes but in an abnormal distribution. They arise from the floor of the third ventricle, tuber cinereum, or mammillary bodies. Estimated incidence ranges from 1 in 50,000 to 1 in 1,000,000. Hypothalamic hamartomas are associated with different clinical presentations including various types of seizures, most characteristically; the gelastic seizures, precocious puberty, cognitive impairment and behavioral changes. In this review, the authors discuss the recent advancements in different modalities of radiotherapy and their application in hypothalamic hamartomas management.


Asunto(s)
Braquiterapia/métodos , Hamartoma/radioterapia , Enfermedades Hipotalámicas/radioterapia , Terapia por Luz de Baja Intensidad/métodos , Radiocirugia/métodos , Humanos , Resultado del Tratamiento
14.
Clin Neurol Neurosurg ; 197: 106102, 2020 10.
Artículo en Inglés | MEDLINE | ID: mdl-32717564

RESUMEN

Connexins (Cxs) are a family of transmembrane proteins that assemble into groups of six, forming what is known as a connexon or a hemichannel. Connexins are named based on their molecular weight, e.g. Cx43 is the connexin protein that weighs 43 kDa. Two hemichannels, each from a different cell, can link up end-to-end forming a gap junction. In the nervous system, gap junctions facilitate metabolite exchange between neighboring cells, in addition to electrical and chemical impulses. Many animal studies have been conducted to investigate the role of different types of Cxs in spinal cord injury (SCI) - most notably Cx43 - and the potential for targeting them with inhibitors. In this review, the authors discuss these studies and provide an update on recent connexin specific pharmacological agents that may potentially pave the way for the use of connexin inhibition in the management of SCI in humans, if more translational studies are done.


Asunto(s)
Conexinas/metabolismo , Uniones Comunicantes/metabolismo , Traumatismos de la Médula Espinal/metabolismo , Médula Espinal/metabolismo , Animales , Astrocitos/metabolismo , Axones/metabolismo , Ácido Glutámico/metabolismo , Humanos
15.
Clin Neurol Neurosurg ; 195: 106074, 2020 08.
Artículo en Inglés | MEDLINE | ID: mdl-32663735

RESUMEN

Hypothalamic hamartomas (HH) are rare, non-neoplastic heterotopic tissues which contains normal neurons and glia including oligodendrocytes and fibrillary astrocytes but in an abnormal distribution. They arise from the floor of the third ventricle, tuber cinereum, or mammillary bodies. Estimated incidence ranges from 1 in 50,000 to 1 in 1,000,000. Hypothalamic hamartomas are associated with different clinical presentations including various types of seizures, most characteristically; the gelastic seizures, precocious puberty, cognitive impairment and behavioral changes. In this review, the authors discuss the recent advancements in the medical and surgical management of hypothalamic hamartoma that have been achieved over the past few decades. This review also discusses the advantages and disadvantages of each surgical line of management and factors determining the best individualized approach.


Asunto(s)
Estimulación Encefálica Profunda , Hamartoma/terapia , Enfermedades Hipotalámicas/terapia , Procedimientos Neuroquirúrgicos , Estimulación del Nervio Vago , Hamartoma/cirugía , Humanos , Enfermedades Hipotalámicas/cirugía , Resultado del Tratamiento
16.
Mol Neurobiol ; 57(6): 2702-2726, 2020 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-32328876

RESUMEN

Degradomics is a proteomics sub-discipline whose goal is to identify and characterize protease-substrate repertoires. With the aim of deciphering and characterizing key signature breakdown products, degradomics emerged to define encryptic biomarker neoproteins specific to certain disease processes. Remarkable improvements in structural and analytical experimental methodologies as evident in research investigating cellular behavior in neuroscience and cancer have allowed the identification of specific degradomes, increasing our knowledge about proteases and their regulators and substrates along with their implications in health and disease. A physiologic balance between protein synthesis and degradation is sought with the activation of proteolytic enzymes such as calpains, caspases, cathepsins, and matrix metalloproteinases. Proteolysis is essential for development, growth, and regeneration; however, inappropriate and uncontrolled activation of the proteolytic system renders the diseased tissue susceptible to further neurotoxic processes. In this article, we aim to review the protease-substrate repertoires as well as emerging therapeutic interventions in spinal cord injury at the degradomic level. Several protease substrates and their breakdown products, essential for the neuronal structural integrity and functional capacity, have been characterized in neurotrauma including cytoskeletal proteins, neuronal extracellular matrix glycoproteins, cell junction proteins, and ion channels. Therefore, targeting exaggerated protease activity provides a potentially effective therapeutic approach in the management of protease-mediated neurotoxicity in reducing the extent of damage secondary to spinal cord injury.


Asunto(s)
Proteolisis , Proteoma/metabolismo , Traumatismos de la Médula Espinal/metabolismo , Animales , Biomarcadores/metabolismo , Humanos , Espectrometría de Masas , Neuronas/metabolismo , Procesamiento Proteico-Postraduccional , Proteómica/métodos
17.
J Clin Neurosci ; 75: 62-65, 2020 May.
Artículo en Inglés | MEDLINE | ID: mdl-32223974

RESUMEN

Foraminal disc herniation presents with an operative challenge, as it often requires facetectomy, which can result in segmental instability. The intraforaminal approach includes partial pars resection and medial facetectomy and allows for direct visualization of the nerve roots and herniated disc in the foramen without violating the joint, with good clinical outcomes. Herein, we describe a retrospective series of patients that underwent minimally invasive paramedian approach with hemilaminectomy, partial medial pars resection, medial facetectomy for foraminal disc herniation. Demographics and clinical outcomes were obtained from medical records. Improvement in functional outcomes was evaluated using the pre and post-operative Visual Analog Scale (VAS) and Oswestry Disability Index (ODI). A total of 23 patients were included in this study. The average age was 56.47 ± 9.4 yrs and body mass index was 31.92 ± 7.7 kg/m2. 47.8% of cases were L4-5 FDH. The estimated blood loss was 31.32 ± 19.8 ml. The average length of hospital stay was 1.11 ± 0.3 days. All patients were discharged home. Overall, there was a significant improvement in the VAS (pre-op: 8.21 ± 2.1; post-op: 2.59 ± 2.7; p-value: <0.0001) and ODI (pre-op: 57.16 ± 13.2; post-op: 21.47 ± 9.9; p-value: <0.0001). The minimally invasive paramedian approach provides satisfactory outcomes as a safe strategy in the treatment of foraminal disc herniation. Herein, there was a significant improvement in pain and functional outcomes, minimal blood loss and decreased hospital stay.


Asunto(s)
Discectomía/métodos , Desplazamiento del Disco Intervertebral/cirugía , Procedimientos Quirúrgicos Mínimamente Invasivos/métodos , Adulto , Anciano , Femenino , Humanos , Vértebras Lumbares/cirugía , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Resultado del Tratamiento
18.
Semin Cancer Biol ; 64: 83-92, 2020 08.
Artículo en Inglés | MEDLINE | ID: mdl-31152785

RESUMEN

At the dawn of the third millennium, cancer has become the bane of twenty-first century man, and remains a predominant public health burden, affecting welfare and life expectancy globally. Spinal osteogenic sarcoma, a primary spinal malignant tumor, is a rare and challenging neoplastic disease to treat. After the conventional therapeutic modalities of chemotherapy, radiation and surgery have been exhausted, there is currently no available alternative therapy in managing cases of spinal osteosarcoma. The defining signatures of tumor survival are characterised by cancer cell ability to stonewall immunogenic attrition and apoptosis by various means. Some of these biomarkers, namely immune-checkpoints, have recently been exploited as druggable targets in osteosarcoma and many other different cancers. These promising strides made by the use of reinvigorated immunotherapeutic approaches may lead to significant reduction in spinal osteosarcoma disease burden and corresponding reciprocity in increase of survival rates. In this review, we provide the background to spinal osteosarcoma, and proceed to elaborate on contribution of the complex ecology within tumor microenvironment giving arise to cancerous immune escape, which is currently receiving considerable attention. We follow this section on the tumor microenvironment by a brief history of cancer immunity. Also, we draw on the current knowledge of treatment gained from incidences of osteosarcoma at other locations of the skeleton (long bones of the extremities in close proximity to the metaphyseal growth plates) to make a case for application of immunity-based tools, such as immune-checkpoint inhibitors and vaccines, and draw attention to adverse upshots of immune-checkpoint blockers as well. Finally, we describe the novel biotechnique of CRISPR/Cas9 that will assist in treatment approaches for personalized medication.


Asunto(s)
Biomarcadores de Tumor/antagonistas & inhibidores , Vacunas contra el Cáncer/administración & dosificación , Inmunoterapia/métodos , Osteosarcoma/terapia , Neoplasias de la Columna Vertebral/terapia , Animales , Biomarcadores de Tumor/inmunología , Humanos , Osteosarcoma/inmunología , Osteosarcoma/patología , Neoplasias de la Columna Vertebral/inmunología , Neoplasias de la Columna Vertebral/patología , Microambiente Tumoral
19.
Semin Cancer Biol ; 64: 36-50, 2020 08.
Artículo en Inglés | MEDLINE | ID: mdl-31254615

RESUMEN

Sarcomas, especially spine sarcomas, are rare yet debilitating and are underestimated types of cancer. Treatment options for spine sarcomas are limited to chemotherapy, radiotherapy and surgical intervention. Accumulating evidence suggests a complex course associated with the treatment of spine sarcomas as compared to other soft tissue sarcomas in the extremities since adjuvant therapy adds limited success to the oncological outcome. Likewise, the limitations of surgical interventions imposed by the proximity and high sensitivity of the spinal cord, leads to an increased recurrence and mortality rates associated with spine sarcomas. Finding novel treatment options to spine sarcomas as such is inevitable, necessitating a more thorough understanding of the different mechanisms of the underlying etiologies of these tumors. In this review, we discuss the most recent studies tackling the involvement of the immune system; a key player in the emergence of the different types of spine sarcomas and the promising immune-mediated targeted therapy that can be applied in these kind of rare cancers.


Asunto(s)
Antineoplásicos Inmunológicos/uso terapéutico , Sistema Inmunológico/inmunología , Sarcoma/patología , Neoplasias de la Columna Vertebral/patología , Animales , Humanos , Sarcoma/tratamiento farmacológico , Sarcoma/inmunología , Neoplasias de la Columna Vertebral/tratamiento farmacológico , Neoplasias de la Columna Vertebral/inmunología
20.
J Clin Neurosci ; 69: 7-14, 2019 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-31447370

RESUMEN

BACKGROUND: Cervical spinal cord injury (cSCI) is a major public health concern in the young population as per the estimation of the annual global report, which concluded that the amount of incidence in this area ranged between 11.5 and 53.4 cases per million population. Moreover, Despite the many evaluations conducted to unveil the physiological and thermo logical complications caused to the human body after a cervical spinal cord injury, the fundamental pathophysiology about this type of injury is still inconclusive. OBJECTIVE: This review attempts to provide a better understanding to the various changes caused to the body after a cSCI. It focuses on the alterations in blood circulation, energy expenditure (EE), sweating, shivering responses and consequently disruption in body temperature regulation. METHODS: Various research engines such as Scopus, PubMed, Embase, Web of Science, EBSCO, and Cochrane Library databases were searched by two independent investigators. 17 studies out of 102 were included based on eligibility criteria: patients with complete and/or incomplete cSCI; minimum of 5 patients as participants; and control group of able Bodied People (AB). RESULTS: Following cSCI, EE decreases by 10% (p < 0.05) due to reduction in lean body mass; cardiac output decrements by 27% (p < 0.05) following the change in arterial blood vessel structure, and finally; thermoregulatory responses were disturbed because of the absence or decrease in vasodilation, vasoconstriction, sudomotor (autonomic activation of sweat glands) and shivering responses. CONCLUSIONS: The body undergoes significant thermoregulatory changes following spinal cord injury. Understanding the pathophysiology of spinal cord injury and its effect on the human body can provide us an insight to develop adequate treatment modalities that tackle the problem of thermal dysregulation in people with cSCI.


Asunto(s)
Regulación de la Temperatura Corporal/fisiología , Fenómenos Fisiológicos Cardiovasculares , Médula Cervical/fisiopatología , Traumatismos de la Médula Espinal/fisiopatología , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad
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