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We report the case of an 80 year-old woman who developed bilateral lower extremity purpura and renal impairment with proteinuria a few days after a transient fever (day 0). High levels of both anti-streptolysin-O antibody (ASO) and anti-streptokinase antibody (ASK), as well as low levels of coagulation factor XIII in serum were noted. Skin biopsy was performed and showed a leukocytoclastic vasculitis with deposition of IgA and C3 in the cutaneous small vessels, indicating IgA vasculitis in the skin. After initiation of oral prednisolone, the skin lesions showed significant improvement. However, renal function and proteinuria gradually worsened from day 12. Kidney biopsy was performed on day 29, which demonstrated a necrotizing and crescentic glomerulonephritis with mesangial deposition of IgA and C3. In addition, the deposition of galactose-deficient IgA1 (Gd-IgA1) was positive on glomeruli and cutaneous small vessels, indicating that the purpura and glomerulonephritis both shared the same Gd-IgA1-related pathogenesis. In addition, the association between the acute streptococcal infection and the IgA vasculitis was confirmed by the deposition of nephritis-associated plasmin receptor (NAPlr) in glomeruli. The patient was treated with steroid pulse and intravenous cyclophosphamide, in addition to the oral prednisolone treatment. Renal function and proteinuria gradually improved, but did not completely recover, as is typically seen with courses of IgA vasculitis in the elderly. In this case, the streptococcal infectionrelated IgA vasculitis was confirmed pathologically by the deposition of both NAPlr and Gd-IgA1 in glomeruli, as well as Gd-IgA1 in the cutaneous small vessels.
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Glomerulonefritis por IGA , Glomerulonefritis , Vasculitis por IgA , Nefritis , Infecciones Estreptocócicas , Anciano , Anciano de 80 o más Años , Femenino , Glomerulonefritis/complicaciones , Glomerulonefritis/diagnóstico , Glomerulonefritis/tratamiento farmacológico , Glomerulonefritis por IGA/patología , Humanos , Vasculitis por IgA/complicaciones , Vasculitis por IgA/diagnóstico , Vasculitis por IgA/tratamiento farmacológico , Inmunoglobulina A , Nefritis/complicaciones , Prednisolona/uso terapéutico , Proteinuria/complicaciones , Infecciones Estreptocócicas/complicaciones , Infecciones Estreptocócicas/diagnóstico , Infecciones Estreptocócicas/tratamiento farmacológico , Vasculitis Leucocitoclástica CutáneaRESUMEN
BACKGROUND: A patient developed paralysis of the small intestine following an acute traumatic hyperextension cervical spinal cord injury attributed to the ossification of the posterior longitudinal ligament (OPLL) C3-C6. The persistent ileus finally resolved utilizing Kampo medications (traditional Chinese therapy) consisting of both bukuryoin (TJ-69) and hangekobokuto (TJ-16). CASE DESCRIPTION: A 63-year-old male became acutely quadriplegic secondary to a hyperextension injury incurred during a fall. Radiographic studies confirmed mixed OPLL extending from C3-C6 resulting in marked cord compression, there was a clear spinal cord contusion. His neurological status using the American Spinal Injury Association (ASIA) Scale was Grade "A;" there were was complete motor and sensory loss below the C5 level. After a C3-C6 expansive laminoplasty, the ASIA scale improved to Grade B. However, he then developed a persistent small intestine ileus resulting in marked abdominal distention. When conventional therapies failed to resolve the problem, Kampo medicines, consisting of both bukuryoin (TJ-69) and hangekobokuto (TJ-16), were administered. The ileus improved within 2 days and fully resolved within the 1st postoperative week. CONCLUSION: The utilization of Kampo medications, consisting of both bukuryoin (TJ-69) and hangekobokuto (TJ-16), or the combined bukuryoingohangekobokuto (TJ-116) effectively resolved a postoperative paralytic small bowel ileus following a cervical laminoplasty performed in a quadriplegic patient. KEYWORDS: Acute cervical cord injury, Cervical ossification of the posterior longitudinal ligamentOPLL, Complication management, Integrative medicine, Paralytic small intestine.
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Excessive intake of phosphate has been known to induce renal tubular damage and interstitial inflammation, leading to acute kidney injury or chronic kidney disease in rodents and humans. However, sensitive and early biomarkers for phosphate-induced kidney damage remain to be identified. Our previous RNA sequencing analysis of renal gene expression identified interleukin-36α (IL-36α) as a gene significantly upregulated by dietary phosphate load in mice. To determine the time course and dose dependency of renal IL-36α expression induced by dietary phosphate load, we placed mice with or without uninephrectomy on a diet containing either 0.35%, 1.0%, 1.5%, or 2.0% inorganic phosphate for 10 days, 4 weeks, or 8 weeks and evaluated renal expression of IL-36α and other markers of tubular damage and inflammation by quantitative RT-PCR, immunoblot analysis, and immunohistochemistry. We found that IL-36α expression was induced in distal convoluted tubules and correlated with phosphate excretion per nephron. The increase in IL-36α expression was simultaneous with but more robust in amplitude than the increase in tubular damage markers such as Osteopontin and neutrophil gelatinase-associated lipocalin, preceding the increase in expression of other inflammatory cytokines, including transforming growth factor-α, interleukin-1ß, and transforming growth factor-ß1. We conclude that IL-36α serves as a marker that reflects the degree of phosphate load excreted per nephron and of associated kidney damage.
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Interleucina-1alfa/metabolismo , Túbulos Renales/metabolismo , Fosfatos/efectos adversos , Lesión Renal Aguda/inducido químicamente , Lesión Renal Aguda/metabolismo , Animales , Biomarcadores/metabolismo , Citocinas/metabolismo , Suplementos Dietéticos , Expresión Génica/genética , Inflamación/metabolismo , Interleucina-1alfa/análisis , Interleucinas/efectos adversos , Interleucinas/metabolismo , Riñón/patología , Túbulos Renales/fisiopatología , Masculino , Ratones , Ratones Endogámicos C57BL , Fosfatos/metabolismo , Transducción de Señal/genéticaRESUMEN
Growth hormone (GH) has multiple physiological roles, acting on many organs. In order to investigate its roles in rat liver, we tried to identify novel genes whose transcription was regulated by GH. We identified X-box binding protein 1 (Xbp1) as a candidate gene. XBP1 is a key transcription factor activated in response to endoplasmic reticulum (ER) stress. The purpose of this study was to investigate the mode of action of GH on XBP1, including the relation with ER stress, sex-dependent expression of the mRNA, and the signaling pathway. Intravenous administration of GH rapidly and transiently increased Xbp1 mRNA in hypophysectomized rat livers. Neither phosphorylated inositol-requiring-1α (IRE1α) nor phosphorylated PKR-like ER kinase (PERK) increased, suggesting that Xbp1 expression is induced by an ER stress-independent mechanism. The active form of XBP1(S) protein was increased by GH administration and was followed by an increased ER-associated dnaJ protein 4 (ERdj4) mRNA level. XBP1(S) protein levels were predominantly identified in male rat livers with variations among individuals similar to those of phosphorylated signal transducer and activator of transcription 5B (STAT5B), suggesting that XBP1(S) protein levels are regulated by the sex-dependent secretary pattern of GH. The GH signaling pathway to induce Xbp1 mRNA was examined in rat hepatoma H4IIE cells. GH induced the phosphorylation of CCAAT/enhancer-binding protein ß (C/EBPß) following extracellular signal-regulated protein kinase (ERK) phosphorylation. Taken together, the results indicated that XBP1 is activated by GH in rat liver in a sexually dimorphic manner via ERK and C/EBPß pathway.
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Proteína beta Potenciadora de Unión a CCAAT/metabolismo , Hormona del Crecimiento/farmacología , Hígado/efectos de los fármacos , Sistema de Señalización de MAP Quinasas , ARN Mensajero/efectos de los fármacos , Proteína 1 de Unión a la X-Box/efectos de los fármacos , Animales , Línea Celular Tumoral , Estrés del Retículo Endoplásmico/genética , Endorribonucleasas/efectos de los fármacos , Endorribonucleasas/metabolismo , Proteínas del Choque Térmico HSP40/efectos de los fármacos , Proteínas del Choque Térmico HSP40/genética , Hipofisectomía , Hígado/metabolismo , Complejos Multienzimáticos/efectos de los fármacos , Complejos Multienzimáticos/metabolismo , Proteínas Serina-Treonina Quinasas/efectos de los fármacos , Proteínas Serina-Treonina Quinasas/metabolismo , ARN Mensajero/metabolismo , Ratas , Factor de Transcripción STAT5/efectos de los fármacos , Factor de Transcripción STAT5/metabolismo , Caracteres Sexuales , Transducción de Señal , Proteína 1 de Unión a la X-Box/genética , eIF-2 Quinasa/efectos de los fármacos , eIF-2 Quinasa/metabolismoRESUMEN
OBJECTIVE: Aerobic exercise is known to acutely improve cognitive functions, such as executive function (EF) and memory function (MF). Additionally, consumption of flavanol-rich cocoa has been reported to acutely improve cognitive function. The aim of this study was to determine whether high cocoa flavanol (CF; HCF) consumption would enhance exercise-induced improvement in cognitive function. To test this hypothesis, we examined the combined effects of HCF consumption and moderate-intensity exercise on EF and MF during postexercise recovery. METHODS: Ten healthy young men received either an HCF (563 mg of CF) or energy-matched low CF (LCF; 38 mg of CF) beverage 70 min before exercise in a single-blind counterbalanced manner. The men then performed moderate-intensity cycling exercise at 60% of peak oxygen uptake for 30 min. The participants performed a color-word Stroop task and face-name matching task to evaluate EF and MF, respectively, during six time periods throughout the experimental session. RESULTS: EF significantly improved immediately after exercise compared with before exercise in both conditions. However, EF was higher after HCF consumption than after LCF consumption during all time periods because HCF consumption improved EF before exercise. In contrast, HCF consumption and moderate-intensity exercise did not improve MF throughout the experiment. CONCLUSION: The present findings demonstrated that HCF consumption before moderate-intensity exercise could enhance exercise-induced improvement in EF, but not in MF. Therefore, we suggest that the combination of HCF consumption and aerobic exercise may be beneficial for improving EF.
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Chocolate/análisis , Función Ejecutiva/efectos de los fármacos , Función Ejecutiva/fisiología , Ejercicio Físico/fisiología , Flavonoles/administración & dosificación , Bebidas , Ciclismo , Cognición/efectos de los fármacos , Cognición/fisiología , Humanos , Masculino , Memoria/efectos de los fármacos , Memoria/fisiología , Consumo de Oxígeno , Método Simple Ciego , Adulto JovenRESUMEN
Techniques of expansive laminoplasty for degenerative cervical myelopathy and ossified posterior longitudinal ligament are described, focusing on the history of the surgical procedure. Laminectomy was the only approach for posterior decompression before Japanese orthopedic surgeons introduced laminoplasty from the 1970s to the 1980s to overcome the poor outcomes of laminectomy. Recent laminoplasty techniques offer less invasive maneuvers to the posterior cervical muscle structures to reduce axial neck pain and to obtain better functional outcome, but every operation is carried out based on the unchanged initial concept. Some recent attempts to improve the surgical results are also discussed.
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Laminoplastia/historia , Osificación del Ligamento Longitudinal Posterior/cirugía , Espondilosis/cirugía , Historia del Siglo XX , Humanos , Laminoplastia/métodos , Resultado del TratamientoRESUMEN
BACKGROUND: Cervical laminoplasty, utilizing different spacers to ''keep the door open,'' is the gold standard in Japan for treating ossification of the posterior longitudinal ligament (OPLL) and cervical spondylotic myelopathy (CSM). Here, we utilized a novel titanium ''basket'' spacer (Laminoplasty Basket: L-Basket; Ammtec, Tokyo) to perform open door cervical laminoplasty to keep the "door open" while also allowing for bony fusion across the open door. METHODS: Twenty-seven patients with/without OPLL were treated with open door laminoplasty utilizing the basket spacer. Patients were analyzed with preoperative/postoperative JOA scores, and X-rays/computed tomography (CT) at least 12 months (range, 12-19 months) postoperatively. RESULTS: Improvement from the preoperative JOA score of 10.3 points to the postoperative JOA of 14.8 points was noted 3 months postoperatively. There were no complications except one patient who had transient C5 palsy. Twelve months postoperatively, X-rays/CT documented fusion on both the open (62%) and hinge sides (90.2%); circumferential fusion was observed 59.8% of the time. CONCLUSION: This titanium "basket" spacer (Laminoplasty Basket: L-Basket; Ammtec, Tokyo) promoted bone union between the spacer and both lamina, lateral masses following cervical laminoplasty without undue complications.
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BACKGROUND: Ossified anterior longitudinal ligament (OALL) of the cervical spine can cause dysphagia, dyspnoea, and dysphonia, although these symptoms are rare. CASE DESCRIPTION: A 71-year-old male presented with gradually progressive dysphagia secondary to OALL. He underwent fiber optic endoscopy and lateral video fluoroscopy. The OALL extended from C4 to C7 and contributed to significant compression of the pharynx as demonstrated on plain cervical radiography, magnetic resonance (MR) imaging, and computed tomography (CT). Following microsurgical resection of the OALL, his symptoms improved. CONCLUSIONS: This study focuses on the clinical and radiographic presentation of OALL; the latter utilizing plain X-rays, MR, and CT studies. Notably, surgical resection is straightforward and allows for immediate decompression of the pharynx as long as it is truly the symptomatic problem.
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BACKGROUND: Another rare cause of lower back pain with radiculopathy is the discal cyst. It is believed to arise from degeneration of a herniated disc, although many other theories of its origin have been proposed. Here, we report a patient with lower back pain/radiculopathy attributed originally to a herniated lumbar disc, which transformed within 6 months into a discal cyst. CASE DESCRIPTION: A 42-year-old male had a magnetic resonance (MR) documented herniated lumbar disc at the L4-5 level. It was managed conservatively for 6 months, after which symptoms recurred and progressed. The follow-up MR study revealed a discal cyst at the L4-5 without residual herniated disc. Of interest, the cyst communicated with the L4-5 intervertebral disc, which was herniated under the posterior longitudinal ligament and the disc space. During surgery, the cyst was completely removed, and his symptoms/signs resolved. CONCLUSION: A discal cyst develops as pathological sequelae of a degenerated herniated disc. Although rare, these lesions must be considered among the differential diagnoses in young patients with radicular back pain. MR study clearly documents these lesions, and surgical excision of the cyst is the treatment of choice.
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Percutaneous endoscopic lumbar discectomy(PELD)has been used as a standard surgical technique for lumbar disc herniation at the Southern TOHOKU Healthcare Group since its introduction in 2009. We present our clinical experiences with PELD for 6 years and discuss the decision-making process for its surgical indication with a review of the pertinent literature. PELD can be performed under both local anesthesia and general anesthesia, and requires only a stab wound for surgery and 3 days of hospitalization. Our surgical results showed generally satisfactory outcomes; however, a salvage surgery was required for 10 of the 96 patients(10.4%)because of early recurrence, insufficient removal of the transligamentous disc fragment, and coexistent canal stenosis. Surgery was discontinued because of unbearable intraoperative pain in one patient each undergoing transforaminal approach and extraforaminal approach under local anesthesia. Although our experience is limited, PELD is considered a promising minimally invasive surgery for lumbar disc herniation. It is generally indicated for patients who are young, sports oriented, or extremely busy. Recurrent disc herniation after microdiscectomy, high risk for general anesthesia, and emergency are considered ideal indications for this technique. Since PELD is a newer technique with a high learning curve, further study, continuous training, and education are required before its widespread implementation. Careful selection of patients is crucial to achieve satisfactory surgical results.
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Endoscopía/métodos , Procedimientos Neuroquirúrgicos/métodos , Enfermedades de la Columna Vertebral/cirugía , Endoscopía/instrumentación , Humanos , Procedimientos Neuroquirúrgicos/instrumentaciónRESUMEN
Our screening study yielded a copper amine oxidase (SrAOX) from Syncephalastrum racemosum, which showed much higher affinity and catalytic efficiency toward ethanolamine (EA) than any other amine oxidase (AOX). Following purification of the enzyme to electrophoretic homogeneity from a cell-free extract, the maximum activity toward EA was detected at pH 7.2-7.5 and 45 °C. The SrAOX complementary DNA (cDNA) was composed of a 2052-bp open reading frame encoding a 683-amino acid protein with a molecular mass of 77,162 Da. The enzyme functions as a homodimer. The deduced amino acid sequence of SrAOX showed 55.3 % identity to Rhizopus delemar AOX and contains two consensus sequences of Cu-AOX, NYDY, and HHQH, suggesting SrAOX is a type 1 Cu-AOX (i.e., a topaquinone enzyme). Structural homology modeling showed that residues (112)ML(113), (141)FADTWG(146) M158, and N318 are unique, and T144 possibly characterizes the substrate specificity of SrAOX. The recombinant enzyme (rSrAOX) was produced using Escherichia coli. Steady-state kinetic analysis of rSrAOX activity toward EA (pH 7.5 and 45 °C) gave K m and k cat values of 0.848 ± 0.009 mM and 9.11 ± 0.13 s(-1), respectively. The standard curves were linear between 0.1 and 2 mM EA, and 10 µg mL(-1)-2.5 mg mL(-1) (15 µM-3.6 mM) phosphatidylethanolamine using Streptomyces chromofuscus phospholipase D, respectively, was sufficiently sensitive for clinical use.
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Amina Oxidasa (conteniendo Cobre)/metabolismo , Etanolamina/metabolismo , Mucorales/enzimología , Amina Oxidasa (conteniendo Cobre)/química , Amina Oxidasa (conteniendo Cobre)/genética , Amina Oxidasa (conteniendo Cobre)/aislamiento & purificación , Secuencia de Aminoácidos , Escherichia coli/genética , Escherichia coli/metabolismo , Concentración de Iones de Hidrógeno , Cinética , Conformación Proteica , Multimerización de Proteína , Proteínas Recombinantes , Análisis de Secuencia de ADN , Homología de Secuencia de Aminoácido , Especificidad por Sustrato , TemperaturaRESUMEN
Radical-polymerized chemical vapor deposition, a new bottom-up method, was developed to produce graphene nanoribbons (GNRs) efficiently, despite the use of extremely low vacuum. Using this technique, a systematic synthesis of a multilayered high-density array of width-controlled sub-1 nm GNRs on a metal surface, with width-dependent band gap, is made possible. GNR films transferred onto insulating substrates behave as an excellent photoconductor.
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We report our early clinical experience with percutaneous endoscopic lumbar discectomy (PELD) for herniated nucleus pulposus (HNP) in the lumbar spine. We introduced PELD to our clinical practice in June 2009. A total of 311 patients with degenerative lumbar spine disease were treated in our hospital up to August 2011. Thirty-seven patients with lumbar HNP were treated by PELD. PELD was carried out under local anesthesia, and the endoscope was continuously irrigated with saline. Twenty-eight patients were treated through the transforaminal approach, 5 were treated through the interlaminar approach, and 4 were treated through the extraforaminal approach. Surgery was discontinued due to uncontrollable intraoperative pain or anatomical inaccessibility in one case of the interlaminar approach and 2 cases of the extraforaminal approach. In the other 34 patients, the elapsed time of surgery was 34 to 103 minutes (mean 62.4 minutes). Extracorporeal blood loss was insignificant. Immediate symptom relief was achieved in all patients, and postoperative magnetic resonance imaging revealed sufficient removal of the HNP. The length of the postoperative hospital stay was 1 or 2 days in all patients. The surgical method of PELD is completely different from percutaneous nucleotomy, and the aim is to directly remove the HNP with minimum damage to the musculoskeletal structure. Although this study is based on our early clinical outcomes, PELD seemed to be a promising minimally invasive surgery for HNP in the lumbar spine.
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Endoscopía/métodos , Degeneración del Disco Intervertebral/cirugía , Vértebras Lumbares/cirugía , Sacro/cirugía , Adulto , Dolor de Espalda/etiología , Discectomía Percutánea/métodos , Femenino , Humanos , Degeneración del Disco Intervertebral/patología , Complicaciones Intraoperatorias/etiología , Tiempo de Internación/estadística & datos numéricos , Imagen por Resonancia Magnética , Masculino , Procedimientos Quirúrgicos Mínimamente Invasivos , Estudios Retrospectivos , Ciática/etiología , Ciática/cirugía , Adulto JovenRESUMEN
OBJECTIVE: The authors present a novel method of the recapping hemilaminoplasty in a retrospective study of patients with spinal surgical disorders. This report describes the surgical technique and the results of hemilaminoplasty using an ultrasonic bone curette. The aim of this study was to examine the safety and effectiveness of the hemilaminoplasty technique with ultrasonic bone curette. METHODS: Between April 2003 and July 2011, 33 patients with various spinal diseases (17 spinal tumors, 5 dural arteriovenous fistulas, 3 syringomyelia, 2 sacral perineural cysts, and 2 arachnoid cysts) were treated microsurgically by using an ultrasonic bone curette with scalpel blade and lightweight handpiece. The ultrasonic bone curette was used for division of lamina. After resection of the lesion, the excised lamina was replaced exactly in situ to its original anatomic position with a titanium plate and screw. Additional fusion technique was not required and the device was easy to handle. All patients were observed both neurologically and radiologically by dynamic plain radiographs and computed tomography (CT) scan. RESULTS: The operation was performed successfully and there were no instrument-related complications such as dural laceration, nerve root injury, and vessels injury. The mean number of resected and restored lamina was 1.7. CT confirmed primary bone fusion in all patients by 12 months after surgery. CONCLUSION: The ultrasonic bone curette is a useful instrument for recapping hemilaminoplasty in various spinal surgeries. This method allows anatomical reconstruction of the excised bone to preserve the posterior surrounding tissues.
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PURPOSE: Development of adjacent segment degeneration following anterior cervical decompression and fusion (ACDF) is still controversial, as adjacent-level kinematics is poorly understood. This study reports preliminary data from a high-accuracy 3D analysis technique developed for in vivo cervical kinematics. METHODS: From nine cervical spondylosis patients, four underwent single-level ACDF, and five underwent two-level ACDF using cylindrical titanium cage implant(s). Pre- and post-surgical CT scans were taken in flexion, neutral and extended positions, allowing us to compute segmental ranges of motion for rotation and translation, and 3D disc-height distributions. Differences in segmental motions and disc-height between fused and adjacent levels were analyzed with a Wilcoxon signed-rank test. Results are presented as mean ± SEM. RESULTS: The flexion/extension angular-ROM at the fusion level decreased after surgery (7.46 ± 1.17° vs. 3.14 ± 0.56°, p < 0.003). The flexion/extension angular-ROM at one caudal adjacent level to the fusion level (3.97 ± 1.29°) tended to be greater post-operatively (6.11 ± 1.44°, p = 0.074). Translation in the anterior-posterior direction during flexion/extension at the fusion level decreased after surgery (1.22 ± 0.20 mm vs. 0.32 ± 0.11 mm, p < 0.01). No differences were found in adjacent-level disc heights between both study time-points. CONCLUSIONS: This study showed increased segmental motion in flexion/extension angular-ROM at one level adjacent to ACDF. However, increases in the rotational angular-ROM were not statistically significant when cranial/caudal adjacent levels were analyzed separately. This preliminary study highlighted the capabilities of a 3D-kinematic analysis method to detect subtle changes in kinematics and disc height at the adjacent levels to ACDF. Thus, reliable evidence related to ACDF's influence on adjacent-level cervical kinematics can be collected.
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Vértebras Cervicales/diagnóstico por imagen , Descompresión Quirúrgica/métodos , Imagenología Tridimensional/métodos , Fusión Vertebral/métodos , Espondilosis/cirugía , Tomografía Computarizada por Rayos X/métodos , Adulto , Anciano , Algoritmos , Fenómenos Biomecánicos , Vértebras Cervicales/fisiopatología , Vértebras Cervicales/cirugía , Descompresión Quirúrgica/efectos adversos , Femenino , Humanos , Vértebras Lumbares/diagnóstico por imagen , Vértebras Lumbares/fisiopatología , Vértebras Lumbares/cirugía , Masculino , Persona de Mediana Edad , Rango del Movimiento Articular/fisiología , Fusión Vertebral/efectos adversos , Espondilosis/fisiopatologíaRESUMEN
BACKGROUND: C1 fracture accounts for 2% of all spinal column injuries and 10% of cervical spine fractures, and is most frequently caused by motor vehicle accidents and falls. We present a rare case of C1 anterior arch fracture following standard foramen magnum decompression for Chiari malformation type 1. CASE DESCRIPTION: A 63-year-old man underwent standard foramen magnum decompression (suboccipital craniectomy and C1 laminectomy) under a diagnosis of Chiari malformation type 1 with syringomyelia in June 2009. The postoperative course was uneventful until the patient noticed progressive posterior cervical pain 5 months after the operation. Computed tomography of the upper cervical spine obtained 7 months after the operation revealed left C1 anterior arch fracture. The patient was referred to our hospital at the end of January 2010 and C1-C2 posterior fusion with C1 lateral mass screws and C2 laminar screws was carried out in March 2010. Complete pain relief was achieved immediately after the second operation, and the patient resumed his daily activities. CONCLUSION: Anterior atlas fracture following foramen magnum decompression for Chiari malformation type 1 is very rare, but C1 laminectomy carries the risk of anterior arch fracture. Neurosurgeons should recognize that fracture of the atlas, which commonly results from an axial loading force, can occur in the postoperative period in patients with Chiari malformation.
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We encountered a case of moyamoya disease which exhibited intracerebral hemorrhage with intraventricular hemorrhage followed by cerebral infarction in a short time. A 39-year-old female presenting with sudden onset disturbance of consciousness was admitted to our hospital. Radiological investigation on admission revealed intracerebral hemorrhage in the left temporal lobe and intraventricular hemorrhage due to moyamoya disease. The patient experienced cerebral infarction of the left frontotemporal area with brain swelling after 20 hours had passed. In spite of immediate left frontotemporal craniectomy and evacuation of the hematoma, she died 9 days after the operation. This case indicates that adequate control of intracranial pressure such as ventricular drainage is important to prevent progression of ischemic attack at an early stage. But it is not known what case of cerebral hemorrhage due to moyamoya disease would be complicated by cerebral infarction. The detection of the patient's consciousness level at an early stage could be a landmark to prevent further ischemic complications.
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Hemorragia Cerebral/etiología , Infarto Cerebral/etiología , Enfermedad de Moyamoya/complicaciones , Adulto , Hemorragia Cerebral/diagnóstico , Femenino , Humanos , Imagen por Resonancia MagnéticaRESUMEN
STUDY DESIGN: Retrospective consecutive cohort study. OBJECTIVE: To study the effectiveness of ß-tricalcium phosphate (ß-TCP) granules as a packing material in the titanium cages for anterior cervical discectomy and fusion (ACDF), compared with the conventional hydroxyapatite (HA) granules. SUMMARY OF BACKGROUND DATA: ACDF using titanium cages is a standard procedure for the treatment of cervical spinal degenerative diseases. Synthetic bone substitutes are widely used to pack the titanium cage to augment intervertebral bony fusion, but the efficacy has not been confirmed. METHODS: Fusion condition was evaluated on lateral radiographs and computed tomography. Complete fusion of the treated segments was defined by three criteria: movement of the spinous process at flexion and extension positions of less than 3 mm, bony bridging between vertebral bodies, and absence of the halo around the titanium cage. The evaluation was performed at 6 months, 1 year, and 2 years after surgery. RESULTS: Intervertebral fusion was studied in patients who underwent ACDF using ß-TCP (93 segments of 57 patients) or HA (72 segments of 48 patients) packing of cylindrical titanium cages. Complete fusion rate at 6 months and 1 year was significantly better in the ß-TCP group (46% at 6 months and 69% at 1 year) than in the HA group (24% at 6 months and 49% at 1 year), but the rate was similar at 2 years in the ß-TCP group (94%) and the HA group (90%). There were no material-related adverse effects. CONCLUSION: Satisfactory final fusion rates were obtained after ACDF using both ß-TCP- and HA-packed titanium cages. ß-TCP showed higher fusion rate in the early stage after surgery and can be recommended as a bone substitute for ACDF with titanium cages.
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Fosfatos de Calcio/uso terapéutico , Vértebras Cervicales/cirugía , Discectomía/métodos , Fusión Vertebral/métodos , Titanio , Adulto , Anciano , Materiales Biocompatibles/uso terapéutico , Vértebras Cervicales/diagnóstico por imagen , Discectomía/instrumentación , Durapatita/uso terapéutico , Femenino , Estudios de Seguimiento , Humanos , Fijadores Internos , Modelos Logísticos , Masculino , Persona de Mediana Edad , Análisis Multivariante , Radiografía , Estudios Retrospectivos , Fusión Vertebral/instrumentación , Factores de Tiempo , Resultado del TratamientoRESUMEN
Minimally invasive central corpectomy (MICC) for cervical segmental ossified posterior longitudinal ligament (OPLL) is described. The procedure of MICC includes upper- or lower-half central corpectomy of the involved cervical spine, transdiscal decompression of the adjacent disc level, dissection and partial removal of the OPLL, removal of the OPLL behind the vertebral body via these windows, and fusion with cylindrical titanium cages. Anterior plate fixation is not necessary. From January 2008 to December 2009 we surgically treated three patients with cervical OPLL by MICC. All three patients showed remarkable improvement of their symptoms within a few days after the operation. No neurological or radiological complication was observed during that period. MICC is beneficial in avoiding complete corpectomy and long fusion, usage of an anterior plate, and usage of a large external orthosis. MICC also reduces the risk of postoperative esophageal perforation due to a screw backing out of the plate.
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Vértebras Cervicales/cirugía , Descompresión Quirúrgica/métodos , Procedimientos Quirúrgicos Mínimamente Invasivos/métodos , Osificación del Ligamento Longitudinal Posterior/cirugía , Procedimientos de Cirugía Plástica/métodos , Anciano , Descompresión Quirúrgica/instrumentación , Femenino , Humanos , Procedimientos Quirúrgicos Mínimamente Invasivos/instrumentación , Procedimientos de Cirugía Plástica/instrumentación , Resultado del TratamientoRESUMEN
Many commercially available hydroxyapatite (HA) spacers for cervical laminoplasty have been introduced but have disadvantages such as lack of plasticity, easy cracking, and occasional difficulty in fixation by sutures. Here we present the short-term results of a newly designed titanium spacer (Laminoplasty Basket) in open-door cervical laminoplasty, and evaluated clinically and radiologically. The titanium box-shaped spacer with two arms for fixation was easily inserted and fixed into the laminoplasty space with 4-mm or 5-mm length screws after the posterior cervical arch was repositioned for the canal expansion. Twenty-one patients with cervical myelopathy due to spondylosis or ossification of the longitudinal ligament or developmental narrow canal observed for more than 6 months postoperatively were enrolled in this study. The neurological condition of these patients improved from 9.4 points on the Japanese Orthopaedic Association scale preoperatively to 13.5 points at 6 months after surgery. Postoperative radiological evaluation showed no laminar closure or implant failure and cervical spine curvature was maintained. These results seemed to have no significant difference compared with those using HA spacers. This titanium spacer is a potential substitute for conventional HA or other similar devices in cervical laminoplasty.