Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 57
Filtrar
Mais filtros

Base de dados
Tipo de documento
Intervalo de ano de publicação
1.
Int J Mol Sci ; 25(5)2024 Mar 02.
Artigo em Inglês | MEDLINE | ID: mdl-38474161

RESUMO

Obesity is a serious global health challenge, closely associated with numerous chronic conditions including type 2 diabetes. Anemarrhena asphodeloides Bunge (AA) known as Jimo has been used to address conditions associated with pathogenic heat such as wasting-thirst in Korean Medicine. Timosaponin A3 (TA3), a natural compound extracted from AA, has demonstrated potential therapeutic effects in various disease models. However, its effects on diabetes and obesity remain largely unexplored. We investigated the anti-obesity and anti-diabetic properties of TA3 using in vitro and in vivo models. TA3 treatment in NCI-H716 cells stimulated the secretion of glucagon-like peptide 1 (GLP-1) through the activation of phosphorylation of protein kinase A catalytic subunit (PKAc) and 5'-AMP-activated protein kinase (AMPK). In 3T3-L1 adipocytes, TA3 effectively inhibited lipid accumulation by regulating adipogenesis and lipogenesis. In a high-fat diet (HFD)-induced mice model, TA3 administration significantly reduced body weight gain and food intake. Furthermore, TA3 improved glucose tolerance, lipid profiles, and mitigated hepatic steatosis in HFD-fed mice. Histological analysis revealed that TA3 reduced the size of white adipocytes and inhibited adipose tissue generation. Notably, TA3 downregulated the expression of lipogenic factor, including fatty-acid synthase (FAS) and sterol regulatory element-binding protein 1c (SREBP1c), emphasizing its potential as an anti-obesity agent. These findings revealed that TA3 may be efficiently used as a natural compound for tackling obesity, diabetes, and associated metabolic disorders, providing a novel approach for therapeutic intervention.


Assuntos
Fármacos Antiobesidade , Diabetes Mellitus Tipo 2 , Saponinas , Animais , Camundongos , Obesidade/metabolismo , Esteroides/farmacologia , Fármacos Antiobesidade/farmacologia , Adipogenia , Proteínas Quinases Ativadas por AMP/metabolismo , Lipídeos/farmacologia , Células 3T3-L1 , Dieta Hiperlipídica , Camundongos Endogâmicos C57BL
2.
Int J Mol Sci ; 24(24)2023 Dec 18.
Artigo em Inglês | MEDLINE | ID: mdl-38139419

RESUMO

Colorectal cancer (CRC) is the third most commonly diagnosed cancer worldwide, and despite advances in treatment, survival rates are still low; therefore, the development of novel drugs is imperative. Acetylcorynoline (ACN) is derived from Corydalis ambigua Cham. et Schltdl tubers. The effect of ACN on colon cancer is still unknown. Therefore, we investigated its potential effects. Our data showed that ACN inhibited cell viability and proliferation. Moreover, ACN induced apoptosis and cell cycle arrest by inhibiting cell growth. In the present study, we hypothesized that ACN regulates c-Myc through CNOT2 or MID1IP1. ACN reduced the protein expression of oncogenic genes, decreased c-Myc half-life, and rapidly inhibited the serum stimulation response. Moreover, knockdown of CNOT2 and MID1IP1 with ACN increased apoptosis and further reduced the expression of oncogenes. In addition, ACN exhibited a synergistic effect with low-dose 5-fluorouracil (5-FU) and doxorubicin (Dox). Collectively, our data demonstrate that ACN inhibited c-Myc expression through CNOT2 and MID1IP1, and induced apoptosis. These findings indicate the potential of ACN as a therapeutic agent against colon cancer.


Assuntos
Neoplasias do Colo , Transdução de Sinais , Humanos , Proteínas Proto-Oncogênicas c-myc/genética , Proteínas Proto-Oncogênicas c-myc/metabolismo , Neoplasias do Colo/tratamento farmacológico , Neoplasias do Colo/metabolismo , Pontos de Checagem do Ciclo Celular , Apoptose , Fluoruracila/farmacologia , Mitose , Proliferação de Células , Linhagem Celular Tumoral , Proteínas Repressoras/genética
3.
Int J Mol Sci ; 24(15)2023 Jul 26.
Artigo em Inglês | MEDLINE | ID: mdl-37569363

RESUMO

In this study, we investigated the potential anticancer effects of Viscum album, a parasitic plant that grows on Malus domestica (VaM) on breast cancer cells, and explored the underlying mechanisms. VaM significantly inhibited cell viability and proliferation and induced apoptosis in a dose-dependent manner. VaM also regulated cell cycle progression and effectively inhibited activation of the STAT3 signaling pathway through SHP-1. Combining VaM with low-dose doxorubicin produced a synergistic effect, highlighting its potential as a promising therapeutic. In vivo, VaM administration inhibited tumor growth and modulated key molecular markers associated with breast cancer progression. Overall, our findings provide strong evidence for the therapeutic potential of VaM in breast cancer treatment and support further studies exploring clinical applications.


Assuntos
Neoplasias da Mama , Viscum album , Humanos , Feminino , Viscum album/metabolismo , Neoplasias da Mama/metabolismo , Extratos Vegetais/farmacologia , Extratos Vegetais/uso terapêutico , Apoptose , Transdução de Sinais , Proliferação de Células , Linhagem Celular Tumoral , Fator de Transcrição STAT3/metabolismo
4.
Eur Spine J ; 27(8): 2023-2028, 2018 08.
Artigo em Inglês | MEDLINE | ID: mdl-29855725

RESUMO

OBJECTIVE: To investigate the relationship between the K-line tilt and classical cervical parameters such as the C2-C7 sagittal vertical axis (SVA), cervical lordosis, and the T1 slope in cervical sagittal alignment. We assessed whether the K-line tilt can be used as an excellent cervical parameter. METHODS: We reviewed 50 patients aged 60-89 years who visited the spine center outpatient clinic from May 2017 to September 2017 through cervical spine lateral radiography and checked the cervical spine parameters. All targeted patients were randomized without any prejudice. Radiographic measurements included the K-line tilt, C2-C7 lordosis, the C2-C7 SVA, the T1 slope, and T1 slope minus C2-C7 lordosis (T1S-CL). Pearson correlation coefficients were calculated between the K-line tilt and each cervical parameter. RESULTS: Of the 50 patients, 33 were men. The mean age of the patients was 70.84 ± 7.52 years. The mean K-line tilt was 11.28 ± 8.31°. The K-line tilt was correlated with the C2-C7 SVA (r = 0.813, P = 0.000) and T1S-CL (r = 0.315, P = 0.026). CONCLUSION: This study showed that the K-line tilt is also a useful parameter like the C2-C7 SVA and T1S-CL in cervical sagittal alignment. These slides can be retrieved under Electronic Supplementary Material.


Assuntos
Vértebras Cervicais/diagnóstico por imagem , Lordose/diagnóstico por imagem , Idoso , Idoso de 80 Anos ou mais , Vértebras Cervicais/patologia , Feminino , Humanos , Lordose/patologia , Masculino , Pessoa de Meia-Idade , Radiografia , Distribuição Aleatória
5.
Skeletal Radiol ; 46(11): 1477-1486, 2017 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-28714054

RESUMO

OBJECTIVE: To determine the functional relevance of diffusion tensor imaging (DTI) metrics and conventional MRI (signal intensity change in T2, compression ratio) by measuring the correlation of these parameters with clinical outcome measured by the modified Japanese Orthopedic Association (mJOA) score. MATERIALS AND METHODS: A total of 20 cervical myelopathy (CM) patients participated in this prospective cohort study. The severities of CM were assessed using the mJOA score. Conventional MRIs (T2-weighted images) measuring the signal changes of spinal cords and the degree of compression at the lesion level and DTI metrics [fractional anisotropy (FA), apparent diffusion coefficient (ADC)] at each lesion and below each lesion (C7/T1) level were acquired using a 3-T Achieva MRI. These parameters were correlated with the mJOA scores to determine the functional relevance. RESULTS: Ninety percent of CM patients showed signal changes and 30 % of patients noted a more than 40% canal compression ratio in conventional MRIs at the lesion level; however, these findings were not correlated with the mJOA score (p < 0.05). In contrast, FA values on DTI showed high sensitivity to CM (100%), which was well correlated with the mJOA score (p = 0.034, r = 0.475) below the lesion level (C7/T1). CONCLUSIONS: This study showed a meaningful symptomatic correlation between mJOA scores and FA values below the lesion levels in CM patients. It could give us more understanding of the pathological changes in spinal cords matched with various clinical findings in CM patients than the results from conventional MRI.


Assuntos
Vértebras Cervicais/diagnóstico por imagem , Imageamento por Ressonância Magnética/métodos , Compressão da Medula Espinal/diagnóstico por imagem , Estenose Espinal/diagnóstico por imagem , Anisotropia , Vértebras Cervicais/patologia , Imagem de Tensor de Difusão/métodos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Sensibilidade e Especificidade , Compressão da Medula Espinal/patologia , Estenose Espinal/patologia
6.
J Infect Public Health ; 16(6): 981-988, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-37148755

RESUMO

BACKGROUND: Generally, a sufficient duration of relevant antibiotics based on an appropriate culture combined with proper surgical treatment guarantees a favorable clinical outcome in patients with pyogenic spine infections. However, a patient's condition often deteriorates as concurrent infections occur in other organs, leading to mortality. Therefore, this study aimed to investigate the epidemiology of concurrent infections in patients with a pyogenic spine infection and estimate the rates and risks of early mortality. METHODS: Patients with a pyogenic spine infection were identified using a national claims database that includes the entire population. The epidemiology of the six types of concurrent infections was investigated, and the corresponding early mortality rates and risks were estimated. The results were validated internally by bootstrapping and externally by defining two additional cohorts for sensitivity analysis. RESULTS: Among 10,695 patients with a pyogenic spine infection, the prevalence of the six types of concurrent infections was 11.3 % for urinary tract infections, 9.4 % for intra-abdominal infections, 8.5 % for pneumonia, 4.6 % for septic arthritis or osteomyelitis of the extremities, 0.7 % for central nervous system infections, and 0.5 % for cardiac infections. Patients with a concurrent infection had approximately 4-fold greater mortality than those without (3.3 % vs. 0.8 %). The early mortality rates were particularly higher in patients with multiple or specific types of concurrent infections, including central nervous system infections, cardiac infections, and pneumonia. In addition, the mortality trends differed significantly according to the number and type of concurrent infections. CONCLUSIONS: These data on six types of concurrent infection among patients with pyogenic spinal infection can be used as a source of reference by clinicians.


Assuntos
Infecções do Sistema Nervoso Central , Discite , Doenças da Coluna Vertebral , Humanos , Estudos de Coortes , Doenças da Coluna Vertebral/terapia , Estudos Retrospectivos , Discite/epidemiologia
7.
Spine J ; 23(12): 1838-1847, 2023 12.
Artigo em Inglês | MEDLINE | ID: mdl-37704049

RESUMO

BACKGROUND CONTEXT: Although the risk of postoperative venous thromboembolism (VTE) in patients who undergo surgery for degenerative spinal disease has received attention, patients experiencing prolonged pain and disability while awaiting or considering surgery have not received adequate attention regarding the risk of VTE. PURPOSE: To investigate the epidemiology of preoperative VTE in patients undergoing surgery for degenerative spinal disease. DESIGN: Retrospective cohort study using a nationwide database. PATIENT SAMPLE: Patients who underwent surgery for degenerative spinal disease. OUTCOME MEASURES: Preoperative occurrence of VTE. METHODS: Data from 2014 to 2018 were obtained from the Korean National Health Insurance claims database. The occurrence of preoperative VTE within a 1-year period divided into 12 time intervals of 30 days each was investigated. The patients were categorized into two groups based on the presence of preoperative VTE. Multivariable logistic regression analysis was conducted to identify the factors associated with preoperative VTE. To validate the relationship between degenerative spinal disease and preoperative VTE, the diagnostic trends of preoperative VTE were analyzed in accordance with the identified risk factors. RESULTS: The overall incidence of preoperative VTE was 50 per 10,000 individuals. Multivariable analysis revealed that VTE occurred more frequently in older patients with specific medical comorbidities, particularly in those with a lumbar spinal lesion accompanied by arthritis of the hip, knee, or shoulder. We also found that the incidence rates of preoperative VTE, as well as the gradient of their increase, began to rise approximately 2 to 3 months prior to the index surgery, peaking just before the index surgery. This diagnostic trend was consistently observed in all patients irrespective of the presence of other risk factors. CONCLUSIONS: The incidence of preoperative VTE in patients with degenerative spinal disease exhibited a sharp increase immediately before surgery, with similar rates to those of postoperative VTE. Clinicians managing patients with degenerative spinal disease should be vigilant for preoperative as well as postoperative VTE.


Assuntos
Embolia Pulmonar , Doenças da Coluna Vertebral , Tromboembolia Venosa , Humanos , Idoso , Tromboembolia Venosa/diagnóstico , Tromboembolia Venosa/epidemiologia , Tromboembolia Venosa/etiologia , Estudos Retrospectivos , Coluna Vertebral/cirurgia , Doenças da Coluna Vertebral/complicações , Doenças da Coluna Vertebral/epidemiologia , Doenças da Coluna Vertebral/cirurgia , Fatores de Risco , Incidência , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/diagnóstico
8.
Clin Orthop Surg ; 15(3): 444-453, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-37274492

RESUMO

Background: Laminoplasty is a common and effective surgery for decompression of the spinal cord in multilevel cervical myelopathy. The midline splitting technique (MST) and the unilateral open door technique (UODT) are the two most commonly performed laminoplasty techniques with continuous debate on which is preferable. This study aimed to add light to the matter by comparing and exploring the possible causes of different outcomes. Methods: A total of 101 patients who underwent laminoplasty for degenerative cervical myelopathy were included in this study. Radiographic measurements including C2-7 Cobb angle, C2-7 range of motion (ROM), Pavlov ratio of the most compressed level, and canal area with diameter were compared. Modified Japanese Orthopedic Association (mJOA) score and complications including C5 palsy, axial neck pain, hinge fractures, and spacer displacement were also compared. Statistical analysis was performed using independent samples t-test, chi-square test, Fisher's exact test, and linear mixed model. Results: C2-7 ROM, canal diameter, Pavlov ratio, and mJOA score did not demonstrate differences between the two techniques. The UODT group had greater postoperative canal expansion but had more loss of C2-7 lordosis than did the MST group. Of the complications, hinge fractures were more common in the UODT group, with more loss of C2-7 lordosis in patients with hinge fractures. On the other hand, spacer displacement occurred only in the MST group, with lesser canal expansion in patients with spacer displacement. Conclusions: The two laminoplasty techniques both demonstrated effectiveness in treating patients with multilevel cervical myelopathy. However, care should be given to avoid hinge fractures and spacer displacement since both can possibly lead to unfavorable outcomes.


Assuntos
Laminoplastia , Humanos , Vértebras Cervicais/diagnóstico por imagem , Vértebras Cervicais/cirurgia , Laminoplastia/efeitos adversos , Laminoplastia/métodos , Lordose , Estudos Retrospectivos , Doenças da Medula Espinal/diagnóstico por imagem , Doenças da Medula Espinal/cirurgia , Resultado do Tratamento
9.
J Korean Neurosurg Soc ; 66(6): 611-617, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37583244

RESUMO

The cervical spine plays a critical role in supporting the skull, maintaining horizontal gaze, and facilitating walking. Its unique characteristics, including the widest range of motion among spinal segments, have led to extensive research on cervical sagittal alignment. Various parameters have been proposed to evaluate cervical alignment, with studies investigating their clinical significance, correlation with symptoms, and implications for surgical interventions. Recent findings suggest that cervical sagittal alignment not only impacts the cervical spine but also influences global spine-pelvic alignment through compensatory mechanisms. This comprehensive review examines classical and new parameters of cervical sagittal alignment and considers the dynamic and muscular factors associated with it.

10.
Neurospine ; 19(2): 323-333, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35577342

RESUMO

OBJECTIVE: The purpose of this study is to analyze various risk factors that can cause postoperative delirium (POD) in degenerative cervical myelopathy (DCM) patients, which may affect normal recovery and outcomes after surgery, and to help deal with them in advance and to take a medical approach. METHODS: A total of 148 patients aged 60 years or older who underwent laminoplasty or anterior cervical discectomy and fusion (ACDF) for DCM from 2008 to 2015 were included in this study. Incidence and multiple risk factors for development of POD were analyzed. RESULTS: POD occurred in 24 patients (16.2%). Among the 148 patients, 78 received laminoplasty, of whom 19 patients (24%) experienced delirium; the other 70 patients underwent ACDF, of whom 5 patients (7.1%) experienced delirium. History of Parkinson disease (odds ratio [OR], 178.242; p = 0.015), potassium level (OR, 3.764; p = 0.031), and surgical approach of laminoplasty over ACDF (OR, 8.538; p = 0.008) were found to be significant risk factors in a multivariate analysis. Age (OR, 1.056; p = 0.04) and potassium level (OR, 3.217; p = 0.04) were significant risk factors in the laminoplasty group. CONCLUSION: The findings of this study suggest that the incidence and risk factors for POD may vary in patients with DCM. It is necessary to understand multiple factors that affect the development of POD.

11.
Diagnostics (Basel) ; 12(9)2022 Aug 29.
Artigo em Inglês | MEDLINE | ID: mdl-36140491

RESUMO

Diffusion tensor imaging (DTI) and magnetization transfer (MT) magnetic resonance imaging (MRI) can help detect spinal cord pathology, and tract-specific analysis of their parameters, such as fractional anisotropy (FA), mean diffusivity, axial diffusivity (AD), radial diffusivity (RD) and MT ratio (MTR), can give microstructural information. We performed the tract-based acquisition of MR parameters of three major motor tracts: the lateral corticospinal (CS), rubrospinal (RuS) tract, and lateral reticulospinal (RS) tract as well as two major sensory tracts, i.e., the fasciculus cuneatus (FC) and spinal lemniscus, to detect pathologic change and find correlations with clinical items. MR parameters were extracted for each tract at three levels: the most compressed lesion level and above and below the lesion. We compared the MR parameters of eight cervical spondylotic myelopathy patients and 12 normal controls and analyzed the correlation between clinical evaluation items and MR parameters in patients. RuS and lateral RS showed worse DTI parameters at the lesion level in patients compared to the controls. Worse DTI parameters in those tracts were correlated with weaker power grasp at the lesion level. FC and lateral CS showed a correlation between higher RD and lower FA and MTR with a weaker lateral pinch below the lesion level.

12.
World Neurosurg ; 165: e555-e562, 2022 09.
Artigo em Inglês | MEDLINE | ID: mdl-35772704

RESUMO

BACKGROUND: Osteoporosis is a well-known risk factor of screw loosening. Classically, dual-energy x-ray absorptiometry (DEXA) scan is an easy and cost-effective method of detecting bone mineral density (BMD). However, T-score on DEXA scan can be overestimated in patients with degenerative changes of the spine. Our objective was to identify correlation between Hounsfield unit (HU) measured by 3-dimensional computed tomography (3D-CT) and screw loosening. METHODS: A total of 113 patients treated with lumbosacral spinal fusion were reviewed and categorized into a screw loosening group and a normal group to compare their average values of preoperative CT HU. Screw loosening was defined as radiolucent area around screw that was thicker than 1 mm with a "double halo sign". RESULTS: There were statistically significant differences in patient age and steroid use between screw loosening and non-loosening groups. There was no significant difference in BMD or T-score between the 2 groups. However, HU values measured in axial, coronal, and sagittal images were significantly different between the 2 groups. In the receiver operating characteristic for HU values measured in CT images, the greatest area under the curve was 0.774 and that was in case of Hounsfield unit measured by axial CT images from L1 to L4. CONCLUSIONS: Preoperative CT HU is associated with screw loosening. It can be a better predictor of screw loosening than DEXA scan. The best predictor of screw loosening in this study is the average value of HU from L1 to L4 in axial cut.


Assuntos
Densidade Óssea , Vértebras Lombares , Absorciometria de Fóton , Parafusos Ósseos , Humanos , Vértebras Lombares/diagnóstico por imagem , Vértebras Lombares/cirurgia , Estudos Retrospectivos , Esteroides , Tomografia Computadorizada por Raios X/métodos
13.
Spine J ; 21(1): 96-104, 2021 01.
Artigo em Inglês | MEDLINE | ID: mdl-32920206

RESUMO

BACKGROUND CONTEXT: Sleep disturbance is highly prevalent in patients with spinal cord injury and is one of the most important clinical issues affecting their quality of life. However, it has not been properly measured or treated in patients with cervical myelopathy (CM), although most typical or atypical symptoms of CM are known to be risk factors for sleep disturbance. In addition, previous studies identified that the presence of sleep disturbance is unintentionally missed under the current evaluation process for degenerative spinal disease without direct investigation using validated tools for sleep. Therefore, studies about sleep disturbances in patients with CM are essential. PURPOSE: The purpose of this study was to investigate the prevalence of sleep disturbance in patients with CM using validated tools and to understand its mechanism by identifying high-risk patients. STUDY DESIGN/SETTING: Cross-sectional study. PATIENT SAMPLE: Consecutive patients diagnosed with CM. OUTCOME MEASURES: Pittsburgh sleep quality index. METHODS: This study was performed on patients diagnosed with CM. Sleep disturbance was determined using the Pittsburgh sleep quality index. Variables associated with sleep disturbance including demographics, lifestyle, medical history, and radiologic parameters were investigated. Independent risk factors related to sleep disturbance were identified using multivariate logistic regression analysis. RESULTS: A total of 203 patients with CM were included in our study. Among them, 126 patients (62.1%) were men, and the mean age was 63.0 years. Despite male predominance, sleep disturbance was identified in 71.4% of patients (145 of 203). Multivariate analysis identified a worse depression scale score, a lower modified Japanese Orthopedic Association score, chronic shoulder joint pain, smaller spinal cord area, and decreased cervical range of motion as independent risk factors for sleep disturbance. CONCLUSIONS: In patients with CM, sleep disturbance was associated with a more severe type of myelopathy. Further studies including polysomnography and measurement of melatonin will be helpful to identify the mechanisms of the sleep disturbance in patients with CM and to improve their quality of life and clinical outcomes.


Assuntos
Qualidade de Vida , Doenças da Medula Espinal , Estudos Transversais , Humanos , Masculino , Pessoa de Meia-Idade , Fatores de Risco , Sono , Doenças da Medula Espinal/epidemiologia
14.
Spine (Phila Pa 1976) ; 46(18): 1207-1217, 2021 Sep 15.
Artigo em Inglês | MEDLINE | ID: mdl-34435983

RESUMO

STUDY DESIGN: A retrospective cohort study. OBJECTIVE: The aim of this study was to develop recurrence-prediction models of pyogenic vertebral osteomyelitis (PVO). SUMMARY OF BACKGROUND DATA: Prediction of recurrence in PVO is crucial to avoid additional prolonged antibiotic therapy and aggressive spinal surgery and to reduce mortality. However, prediction of PVO recurrence by previously identified, initial risk factors is limited in PVO patients who exceptionally require prolonged antibiotic therapy and experience various clinical events during the treatment. We hypothesized that time-series analysis of sequential C-reactive protein (CRP) routinely measured to estimate the response to the antibiotics in PVO patients could reflect such long treatment process and increase the power of the recurrence-prediction model. METHODS: A retrospective study was performed to develop a PVO recurrence-prediction model, including initial risk factors and time-series data of CRP. Of 704 PVO patients, 493 and 211 were divided into training and test cohorts, respectively. Conventional stepwise logistic regression and artificial neural network (ANN) models were created from the training cohort, and the predictions of recurrence in the test cohort were compared. RESULTS: Prediction models using initial risk factors showed poor sensitivity (4.7%) in both conventional logistic model and ANN models. However, baseline ANN models using time-series CRP data showed remarkably increased sensitivity (55.8%-60.5%). Ensemble ANN model using both initial risk factors and time-series CRP data showed additional benefit in prediction power. CONCLUSION: The recurrence-prediction models for PVO created only using the initial risk factors showed low sensitivity, regardless of statistical method. However, ANN models using time-series data of CRP values and their ensemble model showed considerably increased prediction power. Therefore, clinicians treating PVO patients should pay attention to the treatment response including changes of CRP levels to identify high-risk patients for recurrence, and further studies to develop recurrence-prediction model for PVO should focus on the treatment response rather than initial risk factors.Level of Evidence: 4.


Assuntos
Proteína C-Reativa , Osteomielite , Proteína C-Reativa/análise , Humanos , Redes Neurais de Computação , Osteomielite/diagnóstico , Osteomielite/tratamento farmacológico , Estudos Retrospectivos , Resultado do Tratamento
15.
Spine J ; 21(4): 586-597, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-33434649

RESUMO

BACKGROUND CONTEXT: The clinical symptoms of cervical myelopathy (CM) are closely associated with the risk factors of sleep disturbance, and its pathophysiological process is similar to that of spinal cord injury. Therefore, patients with CM are also expected to have sleep disturbance like patients with spinal cord injury, who typically have various types of sleep disorders. Fortunately, sleep disturbance in patients with CM is expected to respond well to treatment, and clinical studies are required to establish proper treatment strategies for CM patients with sleep disturbance. PURPOSE: To compare the effects of CM treatment on sleep quality between patients treated surgically and those managed conservatively and to identify predictors associated with sleep improvement. STUDY DESIGN/SETTING: Prospective cohort study. PATIENT SAMPLE: Patients diagnosed as having CM. OUTCOME MEASURES: Pittsburgh Sleep Quality Index (PSQI). METHODS: The effect of CM treatment on sleep improvement at the 6-month follow-up was evaluated using a multivariate logistic regression analysis of propensity score-matched patients. To investigate factors associated with significant sleep improvement, a subgroup analysis was performed. RESULTS: A total of 131 patients with CM and sleep disturbance were enrolled. Among these patients, 31 received surgical treatment and 100 received conservative treatment. Sleep quality improved rapidly and consistently after surgery, and significant sleep improvement was observed in most of the patients in the surgical group (26/31 patients, 83.9%) at the 6-month follow-up. However, sleep improvement only occurred in 27 (27%) of the 100 patients in the conservative group at the 6-month follow-up. The subgroup analysis revealed that the degree of CM determined by mJOA scores >13 was a significant predictor of sleep improvement after conservative treatment. CONCLUSIONS: Clinicians should closely monitor patients with CM with sleep disturbance, and proper treatment strategies should be considered according to the severity of the conditions.


Assuntos
Transtornos do Sono-Vigília , Doenças da Medula Espinal , Vértebras Cervicais/cirurgia , Tratamento Conservador , Humanos , Estudos Prospectivos , Sono , Transtornos do Sono-Vigília/etiologia , Transtornos do Sono-Vigília/terapia , Resultado do Tratamento
16.
J Clin Med ; 9(3)2020 Mar 05.
Artigo em Inglês | MEDLINE | ID: mdl-32151098

RESUMO

For patients with kyphosis of the cervical spine, laminoplasty is usually incapable of improving neurological symptoms as it worsens kyphotic alignment. Thus, laminoplasty is not recommended in the presence of kyphotic alignment. Nevertheless, laminoplasty may be selected for myelopathy due to multiple-segment intervertebral disc herniation or ossification of posterior longitudinal ligament despite kyphotic alignment. This study examined whether cervical alignment influences surgical outcomes. Cervical alignment before the surgery was classified into lordosis and non-lordosis, and the non-lordosis group was subclassified into reducible and non-reducible groups to determine the change in cervical alignment before and after the surgery and to analyze its relationship with spinopelvic parameters. The lordosis group showed an increase in upper cervical motion (C0-2 Range of Motion (ROM), C0-2ROM/C0-7ROM) after surgery, while the non-lordosis group exhibited a decrease in C2-7ROM and C0-7ROM. The C0-2ROM was maintained without any reduction in the reducible group, while there was no significant change in cervical alignment and ROM of the non-reducible group. None of these changes showed significant association with the spinopelvic parameters of other sites. However, having a non-reducible type non-lordosis is not a proper indication for laminoplasty, as it does not change the alignment after surgery. Therefore, cervical alignment and reducibility should be identified before surgery.

17.
Spine J ; 20(8): 1239-1247, 2020 08.
Artigo em Inglês | MEDLINE | ID: mdl-32061837

RESUMO

BACKGROUND CONTEXT: Although sleep quality is indispensable for good quality of life, it has not been properly measured or treated in patients with lumbar spinal stenosis (LSS). Studies that investigate the prevalence of sleep disturbances and identify high-risk patients are essential to help understand mechanisms of sleep disturbance in patients with LSS, develop multimodal treatment strategies, and eventually improve the clinical outcome for LSS. PURPOSE: The purpose of the study was to investigate the prevalence and status of sleep disturbance in patients with LSS and understand its mechanism by identifying the risk factors. STUDY DESIGN/SETTING: Cross-sectional study. PATIENT SAMPLE: Patients diagnosed with LSS. OUTCOME MEASURES: Pittsburgh sleep quality index (PSQI). METHODS: A study was performed on patients diagnosed with LSS. Sleep disturbance was evaluated using the PSQI. Clinical and radiologic risk factors of sleep disturbance were investigated by comparing its presence and absence in patients with LSS. Multivariate logistic regression analysis was conducted to identify significant risk factors related to sleep disturbance. RESULTS: A total of 230 patients with LSS were analyzed in our study, 141 of whom (61.3%) were women, and the average age was 67.7 years. Sleep disturbance (PSQI score≥6) was identified in 66.1% of the patients (152 out of 230). After a multivariate analysis, sleep disturbance was consistently associated with the female sex, a negative score on the depression scale, and a severe foraminal-type stenosis. Oswestry disability index, visual analogue pain scale, and presence of nocturnal pain were not independently associated with sleep disturbance. CONCLUSIONS: This study identified potential high-risk groups for sleep disturbance among patients with LSS. Proper caution and evaluation for these patients, along with further studies about their treatment outcomes, are required.


Assuntos
Estenose Espinal , Idoso , Estudos Transversais , Feminino , Humanos , Vértebras Lombares/diagnóstico por imagem , Masculino , Prevalência , Qualidade de Vida , Fatores de Risco , Sono , Estenose Espinal/complicações , Estenose Espinal/epidemiologia
18.
Biomed Res Int ; 2020: 8810540, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33313319

RESUMO

PURPOSE: To determine the effect of age on sagittal cervical alignment after cervical laminoplasty procedure so as to identify the group with the greatest degree of variation. Study Setting. Single-center retrospective chart review in a tertiary referral hospital. Outcome Measures. The sagittal vertical axis (SVA) (C2-7), T1 slope, and cervical lordosis. METHODS: We included patients who underwent cervical laminoplasty between 2014 and 2018 and divided 60 consecutive patients into two groups using the cut-off age of 65 years. The Paired t-test and Mann-Whitney U test were used to compare changes between preoperative radiographic cervical sagittal parameters and those 1 year after surgery. RESULTS: Mean patient ages in the older and younger groups were 71 years and 52 years, respectively. The difference of C2-7 SVA was greater in the older group. CONCLUSION: Postoperative cervical balance can be worse when laminoplasty is performed in elderly patients.


Assuntos
Vértebras Cervicais/cirurgia , Laminoplastia/efeitos adversos , Lordose/etiologia , Fatores Etários , Idoso , Vértebras Cervicais/diagnóstico por imagem , Feminino , Humanos , Lordose/diagnóstico por imagem , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias , Período Pós-Operatório , Estudos Retrospectivos , Doenças da Medula Espinal/cirurgia , Centros de Atenção Terciária
19.
Eur Spine J ; 18(2): 218-31, 2009 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-19127374

RESUMO

The object of this study is to compare radiographic outcomes of anterior cervical decompression and fusion (ACDF) versus cervical disc replacement using the Bryan Cervical Disc Prosthesis (Medtronic Sofamor Danek, Memphis, TN) in terms of range of motion (ROM), Functional spinal unit (FSU), overall sagittal alignment (C2-C7), anterior intervertebral height (AIH), posterior intervertebral height (PIH) and radiographic changes at the implanted and adjacent levels. The study consisted of 105 patients. A total of 63 Bryan disc were placed in 51 patients. A single level procedure was performed in 39 patients and a two-level procedure in the other 12. Fifty-four patients underwent ACDF, 26 single level cases and 28 double level cases. The Bryan group had a mean follow-up 19 months (12-38). Mean follow-up for the ACDF group was 20 months (12-40 months). All patients were evaluated using static and dynamic cervical spine radiographs as well as MR imaging. All patients underwent anterior cervical discectomy followed by autogenous bone graft with plate (or implantation of a cage) or the Bryan artificial disc prosthesis. Clinical evaluation included the visual analogue scale (VAS), and neck disability index (NDI). Radiographic evaluation included static and dynamic flexion-extension radiographs using the computer software (Infinitt PiviewSTAR 5051) program. ROM, disc space angle, intervertebral height were measured at the operative site and adjacent levels. FSU and overall sagittal alignment (C2-C7) were also measured pre-operatively, postoperatively and at final follow-up. Radiological change was analyzed using chi(2) test (95% confidence interval). Other data were analyzed using the mixed model (SAS enterprises guide 4.1 versions). There was clinical improvement within each group in terms of VAS and NDI scores from pre-op to final follow-up but not significantly between the two groups for both single (VAS p=0.8371, NDI p=0.2872) and double (VAS p=0.2938, NDI p=0.6753) level surgeries. Overall, ROM and intervertebral height was relatively well maintained during the follow-up in the Bryan group compared to ACDF. Regardless of the number of levels operated on, significant differences were noted for overall ROM of the cervical spine (p<0.0001) and all other levels except at the upper adjacent level for single level surgeries (p=0.2872). Statistically significant (p<0.0001 and p=0.0172) differences in the trend of intervertebral height measurements between the two groups were noted at all levels except for the AIH of single level surgeries at the upper (p=0.1264) and lower (p=0.7598) adjacent levels as well as PIH for double level surgeries at the upper (p=0.8363) adjacent level. Radiological change was 3.5 times more observed for the ACDF group. Clinical status of both groups, regardless of the number of levels, showed improvement. Although clinical outcomes between the two groups were not significantly different at final follow-up, radiographic parameters, namely ROM and intervertebral heights at the operated site, some adjacent levels as well as FSU and overall sagittal alignment of the cervical spine were relatively well maintained in Bryan group compared to ACDF group. We surmise that to a certain degree, the maintenance of these parameters could contribute to reduce development of adjacent level change. Noteworthy is that radiographic change was 3.5 times more observed for ACDF surgeries. A longer period of evaluation is needed, to see if all these radiographic changes will translate to symptomatic adjacent level disease.


Assuntos
Artroplastia de Substituição , Vértebras Cervicais/cirurgia , Disco Intervertebral/cirurgia , Prótese Articular , Doenças da Coluna Vertebral/cirurgia , Fusão Vertebral/instrumentação , Adulto , Placas Ósseas , Transplante Ósseo , Vértebras Cervicais/diagnóstico por imagem , Descompressão Cirúrgica , Feminino , Humanos , Interpretação de Imagem Assistida por Computador , Disco Intervertebral/diagnóstico por imagem , Masculino , Pessoa de Meia-Idade , Medição da Dor , Radiografia , Amplitude de Movimento Articular , Doenças da Coluna Vertebral/diagnóstico por imagem , Doenças da Coluna Vertebral/patologia , Fusão Vertebral/métodos , Resultado do Tratamento
20.
Spine J ; 19(3): 418-429, 2019 03.
Artigo em Inglês | MEDLINE | ID: mdl-30172897

RESUMO

BACKGROUND CONTEXT: Patients with pyogenic vertebral osteomyelitis (PVO) are expected to have an increased risk of bone loss. Therefore, early bisphosphonate therapy would be clinically effective for PVO patients with osteoporosis. PURPOSE: This study aimed to investigate the effect of bisphosphonate on clinical outcomes of PVO patients with osteoporosis. STUDY DESIGN/SETTING: A retrospective comparative study. PATIENT SAMPLE: PVO patients with osteoporosis. OUTCOME MEASURES: Four events of interest for Cox proportional hazard model included surgical treatment, recurrence of infection, subsequent fracture of adjacent vertebral bodies, and death. METHODS: PVO patients were divided into three groups: group A (initiation of bisphosphonate within 6 weeks after PVO diagnosis), group B (initiation of bisphosphonate between 6 weeks and 3 months after PVO diagnosis), and group C (no treatment for osteoporosis). Cox proportional hazard model was used for the four events of interest. RESULTS: A total of 360 PVO patients with osteoporosis were investigated for the four events of interest. Group A had significantly lower hazard ratios for undergoing later (>6 weeks after diagnosis) surgery than group C (p = .014) despite similar occurrences of overall surgery. A significant difference was also observed in the occurrence of subsequent fractures at adjacent vertebral bodies (p = .001 for model 1 and p = .002 for model 2). Groups A and B had significantly lower hazard ratios for subsequent fracture than group C. No significant differences were observed in the hazard ratios of recurrence and death among the three groups. CONCLUSIONS: Early bisphosphonate treatment in PVO patients with osteoporosis was associated with a significantly lower occurrence of subsequent vertebral fracture at adjacent vertebral bodies and lower occurrence of subsequent surgery.


Assuntos
Conservadores da Densidade Óssea/uso terapêutico , Difosfonatos/uso terapêutico , Osteomielite/tratamento farmacológico , Osteoporose/tratamento farmacológico , Fraturas por Osteoporose/prevenção & controle , Idoso , Conservadores da Densidade Óssea/administração & dosagem , Estudos de Casos e Controles , Difosfonatos/administração & dosagem , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Osteomielite/complicações , Osteoporose/complicações , Modelos de Riscos Proporcionais , Resultado do Tratamento
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA