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1.
World J Surg Oncol ; 21(1): 36, 2023 Feb 06.
Artigo em Inglês | MEDLINE | ID: mdl-36747176

RESUMO

BACKGROUND: Laparoscopic and robotic surgery for transverse colon cancer are difficult due to complex fusion of the foregut and midgut and variation of the vessels of the transverse colon. Although the vessels of the right colon have been investigated, middle colic artery (MCA) variation and the relationship with vessels around the transvers colon are unknown. We investigated variation of the MCA using computed tomography angiography (CTA) and cadaver specimen and the relationship between the superior mesenteric vein (SMV) and MCA using CTA. The classification of vessels around the transverse colon may lead to safer and reliable surgery. METHODS: This study included 505 consecutive patients who underwent CTA in our institution from 2014 to 2020 and 44 cadaver specimens. Vascular anatomical classifications and relationships were analyzed using CT images. RESULTS: The MCA was defined as the arteries arising from the superior mesenteric artery (SMA) that flowed into the transverse colon at the distal ends. The classifications were as follows: type I, branching right and left from common trunk; type II, the right and left branches bifurcated separately from the SMA; and type III, the MCA branched from a vessel other than the SMA. Type II was subclassified into two subtypes, type IIa with one left branch and type IIb with two or more left branches from SMA. In the CTA and cadaver studies, respectively, the classifications were as follows: type I, n = 290 and n = 31; type IIa, n = 211 and n = 13; type IIb, n = 3 and n = 0; and type III, n = 1 and n = 0. We classified the relationship between the MCA and left side of the SMV into three types: type A, a common trunk runs along the left edge of the SMV (n = 173; 59.7%); type B, a right branch of the MCA runs along the left edge of the SMV (n = 116; 40.0%); and type C, the MCA runs dorsal of the SMV (n = 1; 0.3%). CONCLUSIONS: This study revealed that The MCA branching classifications and relationship between the SMV and MCA. Preoperative CT angiography may be able to reliably identify vessel variation, which may be useful in clinical practice.


Assuntos
Colo Transverso , Neoplasias do Colo , Laparoscopia , Humanos , Colo Transverso/diagnóstico por imagem , Colo Transverso/cirurgia , Angiografia por Tomografia Computadorizada , Colo/irrigação sanguínea , Neoplasias do Colo/diagnóstico por imagem , Neoplasias do Colo/cirurgia , Mesentério/diagnóstico por imagem , Mesentério/cirurgia , Laparoscopia/métodos , Cadáver
2.
J Obstet Gynaecol Res ; 49(12): 2883-2888, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37735981

RESUMO

AIM: Ovarian cancer is a gynecological malignancy with a poor prognosis. For platinum-sensitive relapsed ovarian cancer, maintenance therapy with poly-ADP ribose polymerase (PARP) inhibitors after chemotherapy is considered; however, olaparib treatment does not always lead to sufficient progression-free survival (PFS). This study aimed to identify factors that predict the efficacy of maintenance therapy using olaparib in platinum-sensitive relapsed ovarian cancer. METHODS: Twenty-seven patients with platinum-sensitive relapsed ovarian cancer, who received initial treatment and showed complete or partial response to prior chemotherapy at our hospital, were included. The primary outcome was the time from the end of previous platinum-based chemotherapy to disease progression (PFS). The Kaplan-Meier method was used to generate time-to-event curves for PFS; multivariate analysis was performed using the Cox proportional hazards regression model. RESULTS: The median PFS was 12 months (95% confidence interval [CI]: 8.3-15.8). Before olaparib administration, the median PFS was 12 months in the <4.1 neutrophil-to-lymphocyte ratio group and 4 months in the ≥4.1 group, with PFS being significantly better in the <4.1 group (log-rank: p = 0.023). When comparing serum cancer antigen 125 (CA125) levels, the median PFS was 13 months in the <18 U/mL group and 6 months in the >18 U/mL group (log-rank: p = 0.022). Multivariate Cox regression analysis revealed that CA125 was the factor affecting PFS (hazard ratio: 4.85; 95% CI: 1.53-15.38). CONCLUSIONS: Serum CA125 levels at olaparib initiation in patients with platinum-sensitive relapsed ovarian cancer may predict PFS as an effect of maintenance therapy using olaparib to treat recurrent disease.


Assuntos
Neoplasias Ovarianas , Ftalazinas , Piperazinas , Feminino , Humanos , Carcinoma Epitelial do Ovário/tratamento farmacológico , Recidiva Local de Neoplasia/tratamento farmacológico , Neoplasias Ovarianas/tratamento farmacológico , Ftalazinas/farmacologia , Ftalazinas/uso terapêutico , Piperazinas/farmacologia , Piperazinas/uso terapêutico
3.
Surg Today ; 52(6): 904-913, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-34697683

RESUMO

PURPOSE: During the perioperative period, coagulofibrinolytic activation occurs, which occasionally results in thromboembolic complications. However, natural perioperative coagulofibrinolytic responses have not been well investigated. The present study examined perioperative coagulofibrinolytic changes and their association with the development of venous thromboembolism (VTE). METHODS: We retrospectively analyzed the changes in coagulofibrinolytic markers for 7 days in 70 patients undergoing elective colorectal surgery. To explore the natural coagulofibrinolytic response, we investigated patients not undergoing perioperative chemical thromboprophylaxis. RESULTS: Coagulation activation occurred from just after surgery to postoperative day (POD) 1, followed by a gradual decrease, but persisted to even POD 7. Fibrinolytic activity showed a tri-phasic response: activation, shutdown and reactivation. Consequently, fibrin/fibrinogen degradation product (FDP) and D-dimer levels continued to increase until POD 7. The development of deep vein thrombosis (DVT) was observed in 11 patients (15.7%). Postoperative sustained hyper-coagulation [soluble fibrin (SF) or thrombin-antithrombin complex (TAT) values on POD 7 > their normal limits] was significantly associated with the development of DVT (SF, p < 0.001; TAT, p = 0.001). CONCLUSION: We found initial coagulation activation and a tri-phasic response of fibrinolytic activity after colorectal surgery. Thus, physicians need to pay attention to these responses when attempting to prevent or treat VTE.


Assuntos
Cirurgia Colorretal , Tromboembolia Venosa , Trombose Venosa , Anticoagulantes , Cirurgia Colorretal/efeitos adversos , Produtos de Degradação da Fibrina e do Fibrinogênio/metabolismo , Humanos , Estudos Retrospectivos , Tromboembolia Venosa/etiologia , Tromboembolia Venosa/prevenção & controle , Trombose Venosa/etiologia
4.
Thromb J ; 19(1): 17, 2021 Mar 12.
Artigo em Inglês | MEDLINE | ID: mdl-33712048

RESUMO

BACKGROUND: We conducted a prospective observational study for investigating the changes in the 13th member of a disintegrin-like and metalloprotease with thrombospondin type 1 motif (ADAMTS13) and its association with the coagulofibrinolytic response in adult trauma patients. METHODS: In 39 trauma patients hospitalized for longer than 7 days, time-course changes in biomarkers of coagulofibrinolysis and systemic inflammation along with ADAMTS13 activity were examined. The patients were stratified into three groups based on ADAMTS13 activities on admission (day 0): normal group (≥70%), mildly decreased group (≥50 and < 70%) and moderately decreased group (< 50%). RESULTS: Among 39 patients with a median Injury Severity Score (ISS) of 20, 11 patients developed disseminated intravascular coagulation (DIC) and 16 patients required transfusion. Six of 39 patients (15.4%) showed moderate decreased ADAMTS13 activity to < 50%, and 20 patients (51.3%) showed mild drops (≥50 and < 70%). These changes in ADAMTS13 activity on day 0 were significantly correlated with changes in IL-6 and other coagulofibrinolytic markers such as platelet counts, prothrombin time and fibrin/fibrinogen degradation product (FDP). Antithrombin activity (AT) and serum albumin (Alb) level showed significantly positive linear correlations with ADAMTS13 activity (AT: r = 0.513, p < 0.001; Alb: r = 0.647, p < 0.001). Simple logistic regression analyses showed that ADAMTS13 activity, if less than 50%, was significantly correlated with the development of DIC (OR 7.499, 95%CI 1.121-49.242, p = 0.038) and the need for transfusion of fresh frozen plasma (OR 9.000, 95%CI 1.327-61.025, p = 0.028). CONCLUSIONS: ADAMTS13 activity decreased even in the early phase of trauma, which was complicated by coagulopathy and systemic inflammation. Furthermore, the decrease in ADAMTS13 activity was correlated with DIC and plasma transfusion.

5.
Biochem Biophys Res Commun ; 523(1): 202-207, 2020 02 26.
Artigo em Inglês | MEDLINE | ID: mdl-31843193

RESUMO

Sepsis is a leading cause of mortality in intensive care units due to multi-organ failure caused by dysregulated immune reactions. In this study, kinetic changes in the immune system were analyzed for 72 h in cecal ligation and puncture (CLP)-induced septic mice while preventing animal death by keeping body temperature. Increase of myeloid cells and decrease of B cells in circulation at 6 h after CLP were markedly observed. At the same time point, interleukin (IL)-10 expressing CD5+ regulatory B cells (Bregs) appeared. IL-10 and programmed death-ligand 1 (PD-L1) mRNA as well as IL-1ß, IL-6 and interferon γ (IFNγ) mRNA was increased in the spleen at 6 h. A gradual decrease in Bcl-2 and abrupt increase of Bim expression in the spleen at the late phase were also found. These results showed that B lymphocytopenia with the appearance of Bregs is the earliest event, likely leading to immunoparalysis in sepsis.


Assuntos
Linfócitos B Reguladores/imunologia , Modelos Animais de Doenças , Linfopenia/imunologia , Sepse/imunologia , Animais , Ceco/cirurgia , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Punções
6.
Thromb J ; 16: 17, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30078997

RESUMO

BACKGROUND: We conducted a prospective observational study for investigating coagulofibrinolytic changes and mechanisms of antithrombin (AT) alternations in trauma. METHODS: Trauma patients hospitalized for more than seven days were analyzed for coagulofibrinolytic biomarkers. The patients were stratified into two groups according to AT activity level on admission (day 0), comprising normal AT and low AT patients. RESULTS: Thirty-nine patients (median Injury Severity Score 20) exhibited initial coagulatory activation and triphasic fibrinolytic changes. AT activity did not show a negative linear correlation with levels of thrombin-antithrombin complex (TAT), a marker of coagulation activity and AT consumption, but was strongly correlated with levels of albumin (Alb), an index of vascular permeability, on day 0 (r = 0.702, p <  0.001). Furthermore, Alb was one of the independent predictors for AT on day 0. IL-6 on day 0 and thrombomodulin (TM) levels during the study period, reflecting systemic inflammation and endothelial cell injury, respectively, were significantly higher in the lower AT group (n = 10) than in the normal group (n = 29) (IL-6, p = 0.004; TM, p = 0.017). On days 2 and 4, TAT levels in the lower AT group were significantly higher than in the normal group. CONCLUSIONS: Trauma caused clear triphasic coagulofibrinolytic changes. Decreased AT in the later phase might lead to a prolonged hypercoagulation. AT reduction in the initial phase of trauma is strongly associated with extravascular leakage as suggested by the association of Alb depletion with IL-6 and TM elevation, but not with AT consumption.

7.
Eur J Orthop Surg Traumatol ; 28(3): 431-438, 2018 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-29124339

RESUMO

PURPOSE: Screw fixation for unstable pelvic ring fractures is generally performed using the C-arm. However, some studies reported erroneous piercing with screws, nerve injuries, and vessel injuries. Recent studies have reported the efficacy of screw fixations using navigation systems. The purpose of this retrospective study was to investigate the accuracy of screw fixation using the O-arm® imaging system and StealthStation® navigation system for unstable pelvic ring fractures. METHODS: The participants were 10 patients with unstable pelvic ring fractures, who underwent screw fixations using the O-arm StealthStation navigation system (nine cases with iliosacral screw and one case with lateral compression screw). We investigated operation duration, bleeding during operation, the presence of complications during operation, and the presence of cortical bone perforation by the screws based on postoperative CT scan images. We also measured the difference in screw tip positions between intraoperative navigation screen shot images and postoperative CT scan images. RESULTS: The average operation duration was 71 min, average bleeding was 12 ml, and there were no nerve or vessel injuries during the operation. There was no cortical bone perforation by the screws. The average difference between intraoperative navigation images and postoperative CT images was 2.5 ± 0.9 mm, for all 18 screws used in this study. CONCLUSION: Our results suggest that the O-arm StealthStation navigation system provides accurate screw fixation for unstable pelvic ring fractures.


Assuntos
Parafusos Ósseos , Fixação Interna de Fraturas/métodos , Fraturas Ósseas/cirurgia , Ossos Pélvicos/lesões , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Perda Sanguínea Cirúrgica , Feminino , Fixação Interna de Fraturas/instrumentação , Fixação Interna de Fraturas/normas , Humanos , Complicações Intraoperatórias/etiologia , Masculino , Pessoa de Meia-Idade , Duração da Cirurgia , Ossos Pélvicos/cirurgia , Cuidados Pós-Operatórios , Implantação de Prótese/métodos , Implantação de Prótese/normas , Sensibilidade e Especificidade , Cirurgia Assistida por Computador/métodos , Cirurgia Assistida por Computador/normas , Tomografia Computadorizada por Raios X
8.
Int J Clin Oncol ; 22(3): 533-540, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28083737

RESUMO

BACKGROUND: Prognostic clinicopathological factors for type 1 endometrial cancer are unknown and the purpose of the current study was to determine the independent prognostic variables for type 1 endometrial cancer. METHODS: We performed a retrospective study of 168 patients with type 1 endometrial cancer primarily treated with comprehensive staging surgery. The median follow-up time was 68 (12-100) months. Independent risk factors for disease-free survival (DFS) and overall survival (OS) were determined using multivariate Cox regression models. Sub-group analysis of stage I was also performed. We also assessed the patterns of failure among patients with recurrences and investigated the associations with the prognostic variables determined by multivariate analysis. RESULTS: Twenty patients (11.9%) had recurrence and 13 patients (7.7%) died of the disease overall. Multivariate analysis revealed that grade 2 (G2) histology (p = 0.008) and positive peritoneal cytology (p = 0.001) predicted the recurrent event in type 1 endometrial cancer. G2 histology (p = 0.007) and positive peritoneal cytology (p = 0.003) were also found to be independent risk factors for tumor-related deaths. Among stage I patients, G2 histology and positive peritoneal cytology were also independent prognostic variables for DFS and OS. Patients with G2 histology and/or positive peritoneal cytology were more likely to have recurrence at distant sites. CONCLUSIONS: G2 histology and positive peritoneal cytology were independent prognostic factors for DFS and OS in type 1 endometrial cancer.


Assuntos
Neoplasias do Endométrio/mortalidade , Neoplasias do Endométrio/patologia , Idoso , Citodiagnóstico , Intervalo Livre de Doença , Neoplasias do Endométrio/cirurgia , Feminino , Humanos , Estimativa de Kaplan-Meier , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/patologia , Prognóstico , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Fatores de Risco
9.
J Obstet Gynaecol Res ; 43(8): 1335-1341, 2017 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-28557190

RESUMO

AIM: The maximum standardized uptake value (SUVmax) of primary tumors in positron emission tomography can be used to predict prognosis in various cancers, but its significance in recurrent tumors remains unclear. In the present study, we evaluated the utility of the SUVmax for predicting therapeutic effects in recurrent gynecological malignancies. METHODS: From February 2012 to July 2014, patients with recurrent gynecological cancer who were treated with chemotherapy or radiotherapy were enrolled in this study. The SUVmax of recurrent lesions before treatment were compared to the therapeutic effects. RESULTS: Fifty patients with recurrent gynecological cancer were enrolled. The mean SUVmax was significantly higher in patients with stable disease/progressive disease than in patients who achieved complete remission/partial remission (13.24 ± 9.78 vs 8.61 ± 5.34, P = 0.039). In patients who were administered chemotherapy, the SUVmax was significantly higher in those with stable disease/progressive disease than in those who achieved complete remission/partial remission (13.24 ± 9.78 vs 8.61 ± 5.34, P = 0.0392) as well as those administered radiotherapy or concurrent chemoradiation therapy (18.15 ± 3.25 vs 11.33 ± 3.98, P = 0.0073). In ovarian cancer patients administered chemotherapy, when the cut-off value of the SUVmax was set as 6.94, the sensitivity and specificity of predicting therapeutic effects were 0.75 and 0.846, respectively. CONCLUSION: Although the number of enrolled cases was small, our study revealed that the SUVmax in recurrent gynecological tumors might predict therapeutic effects. If the SUVmax is relatively high, multimodal therapy, including surgical removal, should be considered.


Assuntos
Carcinoma/diagnóstico , Neoplasias dos Genitais Femininos/diagnóstico por imagem , Recidiva Local de Neoplasia/diagnóstico por imagem , Tomografia por Emissão de Pósitrons , Adulto , Idoso , Idoso de 80 Anos ou mais , Carcinoma/terapia , Feminino , Neoplasias dos Genitais Femininos/terapia , Humanos , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/terapia , Prognóstico , Estudos Retrospectivos , Adulto Jovem
10.
Opt Express ; 24(22): 25548-25564, 2016 Oct 31.
Artigo em Inglês | MEDLINE | ID: mdl-27828493

RESUMO

The atomic scattering factor in the energy range of 11.2-15.4 keV for the ASTRO-H Soft X-ray Telescope (SXT) is reported. The large effective area of the SXT makes use of photon spectra above 10 keV viable, unlike most other X-ray satellites with total-reflection mirror optics. Presence of gold's L-edges in the energy band is a major issue, as it complicates the function of the effective area. In order to model the area, the reflectivity measurements in the 11.2-15.4 keV band with the energy pitch of 0.4 - 0.7 eV were made in the synchrotron beam-line Spring-8 BL01B1. We obtained atomic scattering factors f1 and f2 by the curve fitting to the reflectivities of our witness sample. The edges associated with the L-I, II, and III transitions are identified, of which the depths are found to be roughly 60% shallower than those expected from the Henke's atomic scattering factor.

11.
J Obstet Gynaecol Res ; 41(7): 1145-8, 2015 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-25656985

RESUMO

Brain metastasis from uterine cervical cancer is rare, with an incidence of 0.5%, and usually occurs late in the course of the disease. We report a case of uterine cervical cancer with brain metastasis as the initial site of presentation. A 50-year-old woman with headache, vertigo, amnesia and loss of appetite was admitted for persistent vomiting. Contrast enhanced computed tomography showed a solitary right frontal cerebral lesion with ring enhancement and uterine cervical tumor. She was diagnosed with uterine cervical squamous cell carcinoma with parametrium invasion and no other distant affected organs were detected. The cerebral lesion was surgically removed and pathologically proved to be metastasis of uterine cervical squamous cell carcinoma. The patient underwent concurrent chemoradiotherapy, followed by cerebral radiation therapy, but multiple metastases to the liver and lung developed and the patient died 7 months after diagnosis of brain metastasis.


Assuntos
Neoplasias Encefálicas/diagnóstico , Carcinoma de Células Escamosas/diagnóstico , Neoplasias de Cabeça e Pescoço/diagnóstico , Neoplasias do Colo do Útero/diagnóstico , Amnésia/etiologia , Anorexia/etiologia , Doenças Assintomáticas/terapia , Neoplasias Encefálicas/fisiopatologia , Neoplasias Encefálicas/secundário , Neoplasias Encefálicas/terapia , Carcinoma de Células Escamosas/fisiopatologia , Carcinoma de Células Escamosas/secundário , Carcinoma de Células Escamosas/terapia , Terapia Combinada , Diagnóstico Tardio , Evolução Fatal , Feminino , Neoplasias de Cabeça e Pescoço/fisiopatologia , Neoplasias de Cabeça e Pescoço/secundário , Neoplasias de Cabeça e Pescoço/terapia , Cefaleia/etiologia , Humanos , Japão , Pessoa de Meia-Idade , Carcinoma de Células Escamosas de Cabeça e Pescoço , Neoplasias do Colo do Útero/terapia , Vertigem/etiologia , Vômito/etiologia
12.
Surg Today ; 45(11): 1442-5, 2015 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-25382168

RESUMO

CASE REPORT: A 43-year-old male was admitted to a regional hospital after being diagnosed with severe acute pancreatitis. The patient developed a pancreatic abscess with multiple organ failure. He was transferred to our hospital in critical condition. Computed tomography scans revealed enormous pancreatic abscesses expanding from the pancreatic body to the pelvic area. Pigtail catheters were inserted for percutaneous drainage. Even after the drainage, the abscesses did not improve. Percutaneous necrosectomy was performed using a resectoscope through a fistulous tract. After two necrosectomies, the CT scans showed remarkable decreases in the size of the cystic abscesses, and finally, no abscesses were detectable on the 117 th hospital day. CONCLUSION: We herein present the first description of a minimally invasive technique, using resectoscopy, for treating intractable pancreatic abscesses. Future studies are warranted to examine the efficacy and safety of this procedure for difficult cases, as presented in this report.


Assuntos
Abscesso/etiologia , Abscesso/cirurgia , Procedimentos Cirúrgicos do Sistema Digestório/métodos , Procedimentos Cirúrgicos Minimamente Invasivos/métodos , Pancreatopatias/etiologia , Pancreatopatias/cirurgia , Pancreatite Necrosante Aguda/complicações , Pancreatite Necrosante Aguda/cirurgia , Abscesso/diagnóstico por imagem , Doença Aguda , Adulto , Humanos , Masculino , Pancreatopatias/diagnóstico por imagem , Pancreatite Necrosante Aguda/diagnóstico por imagem , Índice de Gravidade de Doença , Tomografia Computadorizada por Raios X , Resultado do Tratamento
13.
J Shoulder Elbow Surg ; 24(11): 1749-56, 2015 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-26480880

RESUMO

BACKGROUND: Reports regarding arthroscopic fixation of the osteochondral fragments for elbow osteochondritis dissecans (OCD) are few. This study assessed the clinical outcomes of arthroscopic fixation of unstable osteochondral fragments by using absorbable pins over a postoperative period of at least 1 year. METHODS: The patients were 13 adolescent baseball players with a mean age of 14 years (range, 12-16 years) who underwent OCD of primary lesions at International Cartilage Repair Society grades III and IV. The patients were evaluated by using validated outcome measures at a mean follow-up period of 24 months (range, 12-50 months). RESULTS: The mean (standard deviation) score in the disability/symptom section of the Disabilities of the Arm, Shoulder, and Hand improved from 12.4 (6.0) before the surgery to 0.5 (1.2) after the surgery, and the sports section improved from 74.5 (25.4) to 1.4 (5.2). The mean (standard deviation) extension improved from -11° (10.8) to -2° (3.9; P < .001). The mean (SD) flexion improved from 129° (11.6) to 137° (5.6; P = .040). All patients were able to resume playing baseball, and 9 (69%) resumed playing at the same position as before their injuries. CONCLUSIONS: The clinical results of arthroscopic osteochondral fragment fixation in the teenaged baseball players with elbow OCD, albeit obtained over only a short period, were favorable. This arthroscopic treatment enables repair of lesions and is considered appropriate for unstable OCD during the adolescent growth spurt.


Assuntos
Artroscopia , Beisebol , Pinos Ortopédicos , Articulação do Cotovelo/cirurgia , Osteocondrite Dissecante/cirurgia , Adolescente , Criança , Avaliação da Deficiência , Seguimentos , Humanos , Masculino , Amplitude de Movimento Articular , Volta ao Esporte
14.
Appl Opt ; 53(32): 7664-76, 2014 Nov 10.
Artigo em Inglês | MEDLINE | ID: mdl-25402988

RESUMO

The new Japanese x-ray astronomy satellite, ASTRO-H, will carry two identical hard x-ray telescopes (HXTs), which cover the energy range of 5 to 80 keV. The HXT mirrors employ tightly nested, conically approximated thin-foil Wolter-I optics, and the mirror surfaces are coated with Pt/C depth-graded multilayers to enhance the hard x-ray effective area by means of Bragg reflection. The HXT comprises foils 120-450 mm in diameter and 200 mm in length, with a focal length of 12 m. To obtain a large effective area, 213 aluminum foils 0.2 mm in thickness are tightly nested confocally. The requirements for HXT are a total effective area of >300 cm2 at 30 keV and an angular resolution of <1.7' in half-power diameter (HPD). Fabrication of two HXTs has been completed, and the x-ray performance of each HXT was measured at a synchrotron radiation facility, SPring-8 BL20B2 in Japan. Angular resolutions (HPD) of 1.9' and 1.8' at 30 keV were obtained for the full telescopes of HXT-1 and HXT-2, respectively. The total effective area of the two HXTs at 30 keV is 349 cm2.


Assuntos
Lentes , Astronave/instrumentação , Telescópios , Difração de Raios X/instrumentação , Desenho Assistido por Computador , Desenho de Equipamento , Análise de Falha de Equipamento
15.
J Obstet Gynaecol Res ; 40(6): 1754-8, 2014 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-24888944

RESUMO

AIM: The incidence of preoperative deep venous thrombosis (DVT) was examined in patients with pelvic organ prolapse (POP). MATERIAL AND METHODS: Preoperative screening for DVT was performed on the basis of D-dimer levels; if D-dimer levels were beyond the cut-off limit (0.5 µg/mL), ultrasound examination of the lower extremities was performed. A total of 75 consecutive patients who were scheduled for POP operation in our department were examined retrospectively. RESULTS: D-dimer levels were elevated in 24 patients (31.6%). Further, DVT was detected in 10 of the 75 patients, resulting in an incidence rate of 13.3% in the present study. D-dimer levels were significantly higher in the patients with DVT (1.25 ± 0.52 µg/mL vs 0.41 ± 0.26 µg/mL). There was no significant difference in age, and although body mass index and the number of diabetes mellitus cases were relatively higher in the patients with DVT than in those without DVT, there were no statistically significant differences. According to a receiver-operator curve, the suggested cut-off D-dimer value was 0.71 µg/mL (sensitivity and specificity was 0.9 and 0.877, respectively). CONCLUSIONS: Although this was a preliminary study, to the best of our knowledge, this is the first report describing the incidence of preoperative DVT in patients with POP. Our study indicates that the incidence of DVT in patients with POP might have been underestimated thus far. Therefore, every surgeon should evaluate patients for DVT prior to any surgical procedure for POP, particularly in those patients with obesity or diabetes mellitus.


Assuntos
Prolapso de Órgão Pélvico/complicações , Trombose Venosa/complicações , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Incidência , Japão/epidemiologia , Pessoa de Meia-Idade , Prolapso de Órgão Pélvico/cirurgia , Período Pré-Operatório , Estudos Retrospectivos , Trombose Venosa/epidemiologia
16.
J Obstet Gynaecol Res ; 40(6): 1823-7, 2014 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-24888958

RESUMO

Primary retroperitoneal Müllerian adenocarcinoma (PRMA) is an extremely rare tumor and the cause remains unknown. We report a case of PRMA arising from endometriosis. A 52-year-old woman with a history of malignant lymphoma underwent a follow-up computed tomography scan, which revealed a retroperitoneal tumor. Immunohistochemical analysis of tumor resected during laparoscopic surgery showed adenocarcinoma positive for cytokeratin 7 and negative for cytokeratin 20. The patient had undergone hysterectomy and bilateral salpingo-oophorectomy 14 years ago for myoma uteri and endometrial cysts and was treated with estrogen-replacement therapy. The size of the tumor increased and laparotomy was performed. Histopathological examination showed adenocarcinoma resembling endometrial adenocarcinoma, which stained positive for cancer antigen 125, cancer antigen 19-9, estrogen receptor, and progesterone receptor immunohistochemically. The focus of the endometriosis was found at the edge of the tumor, and the stromal cells around the tumor cells were CD10 positive. The patient was diagnosed as having PRMA arising from endometriosis, and treated with adjuvant chemotherapy.


Assuntos
Adenocarcinoma/etiologia , Endometriose/complicações , Neoplasias Retroperitoneais/etiologia , Adenocarcinoma/patologia , Feminino , Humanos , Pessoa de Meia-Idade , Neoplasias Retroperitoneais/patologia , Espaço Retroperitoneal/patologia
17.
Chudoku Kenkyu ; 27(4): 339-42, 2014 Dec.
Artigo em Japonês | MEDLINE | ID: mdl-25771669

RESUMO

A 37-year-old man was admitted to our hospital with acute phenobarbital poisoning. On arrival, he was in deep coma with respiro-circulatory depressions. The serum concentration of the agent was elevated to 149.04 µg/mL which was consistent with a lethal concentration level. He underwent a gastric lavage, administration of activated charcoal, urinary alkalinazation and bowel irrigation. Respiro-circulatory status was recovered rapidly, while the serum concentration of phenobarbital did not decrease smoothly. Although the concentration of the agent decreased to 77.07 µg/mL that should be a comatose level, BIS values were gradually elevated, and then eventually the patient regained his consciousness. Because he was a chronic user of Vegetamin-A containing phenobarbital, the serum level might not have been correlated with symptoms. BIS values were highly reflective of the consciousness level, so it could be a useful indicator for predicting the consciousness levels of patients in deep coma with acute poisoning from hypnotic agents.


Assuntos
Clorpromazina/intoxicação , Coma/induzido quimicamente , Coma/diagnóstico , Monitores de Consciência , Hipnóticos e Sedativos/intoxicação , Fenobarbital/intoxicação , Recuperação de Função Fisiológica , Inconsciência/induzido quimicamente , Inconsciência/diagnóstico , Doença Aguda , Adulto , Carvão Vegetal/administração & dosagem , Clorpromazina/sangue , Coma/fisiopatologia , Coma/terapia , Combinação de Medicamentos , Enema , Lavagem Gástrica , Humanos , Hipnóticos e Sedativos/sangue , Masculino , Fenobarbital/sangue , Comprimidos , Resultado do Tratamento , Inconsciência/fisiopatologia , Inconsciência/terapia
18.
Sci Rep ; 14(1): 6829, 2024 03 21.
Artigo em Inglês | MEDLINE | ID: mdl-38514734

RESUMO

To investigate dysphagia after extubation in patients with severe coronavirus disease 2019 (COVID-19). We retrospectively examined patients with severe COVID-19 treated in our hospital between August 2021 and March 2022. Feeding outcomes were categorized into two groups-(1) total oral intake, and (2) difficulty in oral intake. To assess the feeding outcome, we used modified water-swallowing test (MWST) for all patients. However, in cases where aspiration or recurrent laryngeal nerve palsy was suspected, we conducted the fiberoptic endoscopic evaluation of swallowing after MWST. Patient data were collected from medical records. Forty-six patients with severe COVID-19 were included. Among the 46 patients, 14 (30.4%) experienced difficulties with oral intake. Older age, longer length of hospitalization, duration of mechanical ventilation, tracheostomy, diabetes, and higher serum levels of C-reactive protein (CRP) and procalcitonin (PCT) at the time of intubation were associated with difficulty in oral intake. The rate of difficulty with oral intake in patients with severe COVID-19 was 30.4%, which is not as high as reported in previous studies. Older age, longer duration of mechanical ventilation, tracheostomy, diabetes, and higher levels of CRP and PCT were associated with the prevalence of oral intake difficulty, suggesting that early attention should be paid to high-risk patients who have preexisting deterioration of swallowing function due to aging and comorbidities, or who have prolonged intubation or tracheostomy to prevent aspiration pneumonia.


Assuntos
COVID-19 , Transtornos de Deglutição , Diabetes Mellitus , Humanos , COVID-19/complicações , Estudos Retrospectivos , Deglutição
19.
iScience ; 27(4): 109587, 2024 Apr 19.
Artigo em Inglês | MEDLINE | ID: mdl-38623339

RESUMO

In this study, a murine sepsis model was developed using the cecum ligation and puncture (CLP) technique. The expression of the proinflammatory cytokines tumor necrosis factor alpha (TNF-α) and interleukin-1ß (IL-1ß) in the brain increased 6 h after CLP but decreased 24 h later when elevated endogenous dopamine levels in the brain were sustained. Methyl-4-phenyl-1,2,3,6-tetrahydropyridine hydrochloride reduced dopamine levels in the striatum and increased mortality in septic mice. Dopamine D1-like receptors were significantly expressed in the brain, but not in the lungs. Intraperitoneally administered SKF-81297 (SKF), a blood-brain barrier-permeable D1-like receptor agonist, prevented CLP-induced death of septic mice with ameliorated acute lung injury and cognitive dysfunction and suppressed TNF-α and IL-1ß expression. The D1-like receptor antagonist SCH-23390 abolished the anti-inflammatory effects of SKF. These data suggest that D1-like receptor-mediated signals in the brain prevent CLP-induced inflammation in both the brain and the periphery.

20.
Asian J Endosc Surg ; 17(3): e13313, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38631698

RESUMO

There are many reports on the positional relationship between the ileocolic artery and superior mesenteric vein (SMV). However, there have been no reports of anomalous venous confluence in the ileocecal vessel area. A 69-year-old man was diagnosed with cecal cancer on a preoperative examination of a lung tumor. We planned to perform surgery for the cecal cancer. Computed tomography angiography revealed an anomalous vein confluence in the ileocolic region. We performed robot-assisted ileocecal resection. Although the small intestinal vein was misidentified as the SMV at first, we confirmed the misidentification, identified the SMV on the dorsal side of the ileocolic artery, and ligated the ileocolic vessels with precise forceps manipulation during robotic surgery. Especially for cases with vascular anomalies revealed by preoperative computed tomography angiography, robotic surgery may be useful, as flexible forceps manipulation prevents vascular injury.


Assuntos
Neoplasias do Ceco , Neoplasias , Robótica , Masculino , Humanos , Idoso , Ceco , Veias Mesentéricas/cirurgia
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