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Cauda Equina and Filum Terminale Arteriovenous Fistulas: Anatomic and Radiographic Features. AJNR Am J Neuroradiol 2020; 41:2166-2170. [PMID: 33033040 DOI: 10.3174/ajnr.a6813] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Accepted: 06/01/2020] [Indexed: 11/07/2022]
Abstract
Intradural AVF below the conus medullaris may develop either on the filum terminale or the cauda equina (lumbosacral and coccygeal radicular nerves). Although not a few filum terminale AVFs are found in the literature, only 3 detailed cauda equina AVFs have been reported. Here, we analyze the angiographic and MR imaging findings of our cauda equina and filum terminale AVF cases, supplemented with literature research to characterize the radiologic features of the 2 entities. On angiography, filum terminale AVFs were invariably supplied by the extension of the anterior spinal artery accompanied by a closely paralleling filum terminale vein. Cauda equina AVFs were fed by either a radicular or a spinal artery or both arteries, often with a characteristic wavy radicular-perimedullary draining vein. On thin-section axial MR imaging, the filum terminale AVF draining vein joined the spinal cord at the conus medullaris apex, but that of the cauda equina AVF joined above the conus medullaris apex.
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Refractory juvenile psoriatic uveitis without arthritis: a literature review. J Eur Acad Dermatol Venereol 2020; 34:e173-e175. [DOI: 10.1111/jdv.16127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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EP1.01-18 Clinical Features of Locally Advanced Lung Cancer Patients with Radiation Pneumonitis After Induction Chemoradiotherapy. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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MA20.11 Surgical Treatment for Metastatic Lung Tumors from Sarcomas of Soft Tissue and Bone. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Characteristics of self-reported daily life note (LN) users in return-to-work judgment for workers on sick leave due to mental health conditions, and usefulness of the tool. INDUSTRIAL HEALTH 2019; 57:70-78. [PMID: 30449815 PMCID: PMC6363584 DOI: 10.2486/indhealth.2018-0028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 10/30/2018] [Indexed: 06/09/2023]
Abstract
A self-reported daily life note (LN) is an effective tool used by occupational physicians to assess the capacity of workers on sick leave due to mental illness to return to work (RTW). We aimed to clarify whether there were differences in the criteria used to define recovery for RTW between LN users and non-users, whether LN users were satisfied with LN, and whether non-users wanted to use LN. In total, 363 occupational physicians (238 LN users, 125 non-users) completed self-reported questionnaires covering demographic and occupational variables, and RTW assessment criteria. We investigated which of the 10 assessment criteria were considered most important for RTW. The proportion of LN users was higher among women, younger physicians, and occupational physicians with more working days per month. LN users emphasized four criteria in assessing RTW: 1) constant wake-up time, 2) constant bedtime, 3) no midnight waking, and 4) no feeling of drowsiness during the day. LN users regard regular sleep rhythm and the absence of drowsiness during the day as important criteria for RTW. Ninety-seven percent of users regarded LN as useful. Seventy-four percent of non-users had interest in using LN.
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P1.14-30 Prognostic Factors for Sarcoma Patients with Lung Metastasis Who Underwent Extended Pulmonary Resection. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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P1.14-29 Surgical Treatment for Metastatic Lung Tumors from Various Sarcomas. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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An Improved Computer-aided Diagnosis Scheme Using the Nearest Neighbor Criterion for Determining Histological Classification of Clustered Microcalcifications. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1625433] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Summary
Objectives
: Our purpose was to evaluate the potential usefulness of the nearest neighbor case which was assumed to be the similar case in a CAD scheme for determining the histological classification of clustered microcalcifications.
Methods
: Our database consisted of current and previous magnification mammograms obtained from 93 patients before and after three-month follow-up examination. It included 11 invasive carcinomas, 19 noninvasive carcinomas of the comedo type, 25 noninvasive carcinomas of the noncomedo type, 23 mas- topathies, and 15 fibroadenomas. Six objective features on clustered microcalcifications were first extracted from each of the current and the previous images. The nearest neighbor case was then identified by the Euclidean distance in the previous and current feature-space. The histological classification of an unknown new case in question was assumed to be thesame as that of the nearest neighbor case which has the shortest Euclidean distance in our database.
Results
: The classification accuracies were 90.9% for invasive carcinoma, 89.5% for noninvasive carcinoma of the comedo type, 96.0% for noninvasive carcinoma of the noncomedo type, 82.6% for mastopathy, and 93.3% for fibroadenoma. These results were substantially higher than those with our previous CAD scheme.
Conclusion
: The nearest neighbor criterion was useful in a CAD scheme for determining the histological classification.
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Job crafting, work engagement, and psychological distress among Japanese employees: a cross-sectional study. Biopsychosoc Med 2017; 11:6. [PMID: 28203272 PMCID: PMC5301445 DOI: 10.1186/s13030-017-0091-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 02/06/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Job crafting, an employee-initiated job design/redesign, has become important for employees' well-being. However, most studies on the relationship between job crafting and employees' well-being have been conducted in western countries; thus, it is unclear whether job crafting can be effectively applied to Asian cultures, such as Japan, which emphasizes group harmony. The aim of this study was to examine the cross-sectional associations of self-reported job crafting with work engagement and psychological distress among employees in Japan. METHOD A questionnaire survey through the internet was conducted among all employees of a manufacturing company in Japan. We analyzed the data from 894 respondents, all employees with regular employment. Job crafting, work engagement, and psychological distress were assessed using the Japanese version of the Job Crafting Questionnaire, the Japanese version of the Utrecht Work Engagement Scale (UWES), and the Brief Job Stress Questionnaire (BJSQ), respectively. RESULT Hierarchical multiple regression showed that increasing structural job resources, social job resources, and challenging job demands was significantly and positively associated with work engagement (β = 0.31, p < 0.001; β = 0.14, p < 0.001; β = 0.36, p < 0.001, respectively). For psychological distress, increasing structural job resources was significantly and negatively associated with psychological distress (β = -0.15, p < 0.001). CONCLUSION Our study suggests that increasing structural job resources is associated with higher work engagement and lower psychological distress. In addition, increasing social job resources and challenging job demands are also associated with higher work engagement.
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Effects of web-based stress and depression literacy intervention on improving work engagement among workers with low work engagement: An analysis of secondary outcome of a randomized controlled trial. J Occup Health 2016; 59:46-54. [PMID: 27885247 PMCID: PMC5388612 DOI: 10.1539/joh.16-0187-oa] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Objective: The purpose of this randomized, controlled trial was to examine the effects of a psychoeducational information website on improving work engagement among individual workers with low work engagement, where work engagement was measured as a secondary outcome. Methods: Participants were recruited from registered members of a web survey site in Japan. Participants who fulfilled the eligibility criteria were randomly allocated to intervention or control groups. Immediately after the baseline survey, the intervention group was invited to study a psychoeducational website called the "UTSMed," which provided general mental health literacy and cognitive behavioral skills. Work engagement was assessed by using the Utrecht Work Engagement Scale at baseline, 1-, and 4-month follow-ups for both intervention and control groups. An exploratory analysis was conducted for a subgroup with low (lower than the median scores) work engagement scores at baseline. Results: A total of 1,236 workers completed the baseline survey. In the low work engagement subgroup, a total of 313 and 300 participants were allocated to an intervention and control group, respectively. In the high work engagement subgroup, 305 and 318 participants were allocated to an intervention and control group, respectively. The program showed a significant effect on work engagement (t = 1.98, P = 0.048) at the 4-month follow-up in the low work engagement subgroup, with a small effect size (d = 0.17). Conclusion: A web-based psychoeducation resource of mental health literacy and cognitive behavioral skills may be effective for improving work engagement among individual workers with low work engagement.
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Effects of a job crafting intervention program on work engagement among Japanese employees: a pretest-posttest study. BMC Psychol 2016; 4:49. [PMID: 27776553 PMCID: PMC5078879 DOI: 10.1186/s40359-016-0157-9] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Accepted: 10/17/2016] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Job crafting, an employee-initiated job design/redesign, has become important for employees' well-being such as work engagement. This study examined the effectiveness of a newly developed job crafting intervention program on work engagement (as primary outcome), as well as job crafting and psychological distress (as secondary outcomes), using a pretest-posttest study design among Japanese employees. METHODS Participants were managers of a private company and a private psychiatric hospital in Japan. The job crafting intervention program consisted of two 120-min sessions with a two-week interval between them. Outcomes were assessed at baseline (Time 1), post-intervention (Time 2), and a one-month follow-up (Time 3). The mixed growth model analyses were conducted using time (Time 1, Time 2, and Time 3) as an indicator of intervention effect. Effect sizes were calculated using Cohen's d. RESULTS The program showed a significant positive effect on work engagement (t = 2.20, p = 0.03) in the mixed growth model analyses, but with only small effect sizes (Cohen's d = 0.33 at Time 2 and 0.26 at Time 3). The program also significantly improved job crafting (t = 2.36, p = 0.02: Cohen's d = 0.36 at Time 2 and 0.47 at Time 3) and reduced psychological distress (t = -2.06, p = 0.04: Cohen's d = -0.15 at Time 2 and -0.31 at Time 3). CONCLUSIONS The study indicated that the newly developed job crafting intervention program was effective in increasing work engagement, as well as in improving job crafting and decreasing psychological distress, among Japanese managers. TRIAL REGISTRATION UMIN Clinical Trials Registry UMIN000024062 . Retrospectively registered 15 September 2016.
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Effects of web-based stress and depression literacy intervention on improving symptoms and knowledge of depression among workers: A randomized controlled trial. J Affect Disord 2016; 203:30-37. [PMID: 27280960 DOI: 10.1016/j.jad.2016.05.045] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 04/14/2016] [Accepted: 05/22/2016] [Indexed: 10/21/2022]
Abstract
BACKGROUND The present randomized controlled trial aimed to examine whether a newly developed psychoeducational information website on stress and depression was effective in improving depressive symptoms at one- and four-month follow-ups among workers in Japan. METHODS Participants were recruited from registered members of a web survey site in Japan. Participants who fulfilled the eligibility criteria were randomly allocated to intervention or control groups. Immediately after the baseline survey, the intervention group was invited to access a psychoeducational website named the "UTSMed" within 4 months after the baseline survey. Depressive symptoms (Beck Depression Inventory II; BDI-II) were assessed as a primary outcome, at baseline, and one- and four-month follow-ups for both intervention and control groups. The analyses were conducted separately by the three subgroups (high-risk, moderate-risk, and low-risk). RESULTS A total of 1236 workers completed the baseline survey. Participants were randomly allocated to an intervention or control group (N=618 for each), with the subgroups of high-risk (7-8%), moderate-risk (47%) and low-risk (45-46%) in each group. A significant intervention effect on improving depressive symptoms (t=-2.35, P =0.02, d=-0.57) was observed at 1-month follow-up only in the high-risk subgroup. LIMITATIONS The present study did not use a stratified permuted-block randomization. CONCLUSIONS A web-based psychoeducation approach may not be effective enough in improving depressive symptoms in a general population of workers, while it may be effective for workers who had recently sought help for mental health.
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Abstract
Objectives: The aim of this study was to validate the Japanese version of the job crafting scale (JCS-J). JCS measures four independent job crafting dimensions, namely increasing structural job resources, decreasing hindering job demands, increasing social job resources, and increasing challenging job demands. Methods: The translated and back-translated JCS-J questionnaires were administered online to 972 employees of a Japanese manufacturing company. The data were then divided into independent explorative and confirmative samples. Exploratory and confirmatory factor analyses were performed to evaluate the factorial validity of JCS-J. The relationship with potential consequences of job crafting (e.g., job demands, job resources, and psychological well-being) was investigated to evaluate construct validity. Internal consistency was examined to evaluate the reliability of the four JCSs. Results: An exploratory factor analysis extracted a five-factor solution. Decreasing hindering job demands was further split into two separate dimensions supporting a five- rather than four-factor structure. A series of confirmatory factor analyses revealed that the modified five-factor model that allows covariance between items fits the data best. Construct validity was generally supported by the expected correlations of each job crafting dimension with each corresponding job resource (+), job demand (+), and psychological well-being (+). Cronbach's α coefficient was sufficient for each of the four dimensions of job crafting (α ranged between 0.76 and 0.90). Conclusions: This study confirmed that JCS-J is an adequate measure of job crafting that can be used in the Japanese context.
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THU0561 Adalimumab in Patients with Active and Inactive, Non-Infectious Uveitis: Visual I and Visual II Trials. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.1738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Bifidobacterium breve prevents necrotising enterocolitis by suppressing inflammatory responses in a preterm rat model. Benef Microbes 2015; 7:75-82. [PMID: 26420070 DOI: 10.3920/bm2015.0035] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Necrotising enterocolitis (NEC) is associated with inflammatory responses and barrier dysfunction in the gut. In this study, we investigated the effect of Bifidobacterium breve M-16V on factors related to NEC development using an experimental rat model. Caesarean-sectioned rats were given formula milk with or without B. breve M-16V by oral gavage thrice daily, and experimental NEC was induced by exposing the rats to hypoxic conditions. Naturally delivered rats that were reared by their mother were used as healthy controls. The pathological score of NEC and the expression of molecules related to inflammatory responses and the barrier function were assessed in the ileum. B. breve M-16V reduced the pathological scores of NEC and resulted in some improvement in survivability. B. breve M-16V suppressed the increased expression of molecules related to inflammation and barrier function that resulted from NEC induction. B. breve M-16V normalised Toll-like receptor (TRL)4 expression and enhanced TLR2 expression. Our data suggest that B. breve M-16V prevents NEC development by modulating TLR expressions and suppressing inflammatory responses in a rat model.
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Impact of recipient aging on kidney allograft in living donor transplantation. Transplant Proc 2014; 46:454-6. [PMID: 24655986 DOI: 10.1016/j.transproceed.2013.10.059] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Accepted: 10/02/2013] [Indexed: 11/24/2022]
Abstract
BACKGROUND The aging of recipients is becoming increasingly important in organ transplantation. PATIENTS AND METHODS We analyzed outcomes in 215 consecutive adult kidney transplant recipients from living donors who underwent transplantation at our center between November 1988 and March 2012. The list of recipients was divided by age at transplantation into those aged 16 to 29 years (n = 61), 30 to 39 years (n = 69), 40 to 49 years (n = 33), 50 to 59 years (n = 29), and those 60 years or older (elderly group, n = 23). Cox proportional hazards analysis was used to calculate the relative risk (RR) of patient death and graft failure, with recipient age included as a continuous variable. RESULTS Univariate analysis showed that recipient age did not significantly affect the risk of graft failure, either uncensored (RR = 1.01, P = .312) or censored for death (RR = 0.993, P = .587). Multivariate analysis, however, showed that recipient age was an independent risk factor for patient death (RR = 1.053, P = .024). The patient survival rate was the poorest in elderly group (87.0%, P = .036), whereas the both death uncensored and censored graft survival rates of this group were 78.1% and 91.3%, respectively, comparable to those of other age groups (P = .567 and P = .696). Mean estimated glomerular filtration rate (eGFR) 1 year after transplantation was lower in elderly groups than in other groups (46.1 ± 13.0 mL/min/1.73 m(2), P = .014). However, mean δeGFR, defined as the difference between pretransplantation eGFR of the donor and eGFR of the recipient 1 year post-transplantation, did not differ significantly among age groups. CONCLUSION Recipient age did not affect allograft deterioration in living donor kidney transplantation, although it was an independent risk factor of recipient death.
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Double ophthalmic artery visualized with new technology. Neuroradiol J 2013; 26:371-2. [PMID: 24007724 DOI: 10.1177/197140091302600401] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Accepted: 07/05/2013] [Indexed: 11/16/2022] Open
Abstract
The anatomy of the double ophthalmic artery was visualized using fused imaging. The images demonstrate the first angiographic visualization of the course of the vessel.
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Swine hybrid aneurysm model for endovascular surgery training. Interv Neuroradiol 2013; 19:153-8. [PMID: 23693037 DOI: 10.1177/159101991301900202] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2012] [Accepted: 01/17/2013] [Indexed: 11/16/2022] Open
Abstract
The aim of this study was to develop a technically simple swine aneurysm-training model by inserting a silicone aneurysm circuit in the cervical vessels. A silicone aneurysm circuit was created by designing multiple aneurysms in size and configuration on a silicone vessel. Five swine underwent surgical implantation of this circuit in the cervical vessels: one end in the common carotid artery and the other in the external jugular vein. Using this model, an aneurysm coiling procedure was simulated under fluoroscopic guidance, roadmapping and digital subtraction angiography. Creating an aneurysm model for training purposes by this method was technically simple and enabled the formation of a wide variety of aneurysms in a single procedure. The quality of the model was uniform and the model was reproducible. Coiling training using this model resembled a realistic clinical situation. The swine hybrid aneurysm-training model was advantageous from the standpoint of technical simplicity in the creation and variety of aneurysms it provided. The swine hybrid aneurysm model may be an additional option for aneurysm coiling training.
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Abstract
To ensure their stable inheritance by daughter cells during cell division, bacterial low-copy-number plasmids make simple DNA segregating machines that use an elongating protein filament between sister plasmids. In the ParMRC system of the Escherichia coli R1 plasmid, ParM, an actinlike protein, forms the spindle between ParRC complexes on sister plasmids. By using a combination of structural work and total internal reflection fluorescence microscopy, we show that ParRC bound and could accelerate growth at only one end of polar ParM filaments, mechanistically resembling eukaryotic formins. The architecture of ParM filaments enabled two ParRC-bound filaments to associate in an antiparallel orientation, forming a bipolar spindle. The spindle elongated as a bundle of at least two antiparallel filaments, thereby pushing two plasmid clusters toward the poles.
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[Return-to-work program with a relapse-free job retention rate of 91.6% for workers with mental illness]. SANGYO EISEIGAKU ZASSHI = JOURNAL OF OCCUPATIONAL HEALTH 2012; 54:276-285. [PMID: 23001212 DOI: 10.1539/sangyoeisei.e12001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
OBJECTIVE We evaluated the relapse-free job retention rate and cost-effectiveness of return-to-work (RTW) programs for workers with mental illness. METHOD We retrospectively evaluated a group of 196 employees of a pharmaceutical company in Japan who had taken sick leave because of mental illness. We found that the old RTW program led to 142 employees returning to work and the new RTW program resulted in 54 employees returning to work. In the new program, we introduced the following improvements: evaluation of recovery and readiness to return to work by using the "Daily Activity Record Sheet"; planning for RTW with reasonable steps in 6 months; monthly interviews with an occupational health physician, to keep in touch with workers in the RTW process; and arranging a "Return-to-Work Coordination Meeting" with occupational health specialists, to make reasonable adjustments to a return-to-work plan. RESULTS The median duration of sick leave was 60 days longer in the new program. The relapse-free job retention rate within 1 year was 54.2% in the old program and was increased to 91.6% in the new program. The old and new programs cost 65,945 yen and 300,898 yen, respectively. The benefits of the old and new programs were 6,226,192 yen and 8,418,514 yen, respectively. The return on investment (ROI) was 933%. CONCLUSION The new RTW program is effective at improving the relapse-free job retention rate of workers with mental illness.
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Wire-probing technique to revascularize subacute or chronic internal carotid artery occlusion. Interv Neuroradiol 2012; 18:288-96. [PMID: 22958767 DOI: 10.1177/159101991201800307] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2011] [Accepted: 02/26/2012] [Indexed: 11/16/2022] Open
Abstract
During endovascular revascularization of subacute and chronic occlusion of the cervical internal carotid artery (ICA) it may be difficult to penetrate the lesion. Selecting the appropriate "true lumen", a remnant of what had been the arterial lumen, at the initial step may facilitate the procedure. Because plaque at the carotid bifurcation is known to propagate from the posterior wall, a gateway to this "true lumen" should exist in the anterior side of the occluded stump. This hypothesis was studied retrospectively in our series of revascularizing ICA subacute and chronic occlusion. Eleven patients underwent endovascular revascularization for symptomatic cervical ICA occlusion. Procedures were performed by initially penetrating the occluded stump with a guidewire, followed by supporting catheter advancement through the occluded segment to secure the distal normal arterial lumen. Cases were analyzed with regard to the location of initial guidewire penetration. Eight patients underwent successful revascularization. In five cases, the entry point to the occluded stump was located at the anterior side, and in three, at the posterior side. Two posterior stump penetration cases were met with resistance in guidewire advancement, whereas penetration was smooth in the anterior cases. In addition, two posterior stump penetration cases resulted in contrast stasis in the posterior ICA wall. In our series of revascularizing cervical ICA subacute and chronic occlusion, initially targeting the anterior side of the occluded stump resulted in favorable results. This may be the result of selecting the "true lumen" at the beginning of the procedure.
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A prevalent founder mutation and genotype-phenotype correlations ofOTOFin Japanese patients with auditory neuropathy. Clin Genet 2012; 82:425-32. [DOI: 10.1111/j.1399-0004.2012.01897.x] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Protected endovascular revascularization of subacute and chronic total occlusion of the internal carotid artery. AJNR Am J Neuroradiol 2010; 31:481-6. [PMID: 19850764 DOI: 10.3174/ajnr.a1843] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE The natural course of symptomatic carotid artery occlusion with hemodynamic impairment is poor. Surgical revascularization may improve the outcome; however, its efficacy has not been established yet. The goal of this study was to characterize the technical and clinical outcomes following endovascular recanalization of the ICA under cerebral circulatory protection. MATERIALS AND METHODS Endovascular recanalization was attempted in 8 patients with symptomatic ICA occlusions. The duration of the occlusion ranged from 7 days to 7 months (mean, 2.5 months), and the mean length of the occlusion was 95 mm. Cerebral hemodynamics ipsilateral to the side of the occlusion were severely impaired in all patients. The endovascular procedure was performed under total cerebral circulatory protection, beginning with proximal protection with a subsequent switch to distal protection after successful guidewire passage. RESULTS The occlusion was recanalized successfully in 7 of 8 patients (88%), resulting in improvement of ipsilateral cerebral hemodynamics without symptomatic stroke. Small asymptomatic ischemic lesions were detected in 6 of 8 patients (75%) on DWI, and 1 patient developed a mild groin hematoma. Ischemic episodes did not recur during the mean follow-up period of 19 months. However, 1 patient experienced asymptomatic reocclusion, which was re-treated successfully without complications, while another patient developed mild retinal hemorrhage at 3 months after the procedure due to the combination of antiplatelet and anticoagulant therapy. CONCLUSIONS Endovascular revascularization of an ICA occlusion is feasible and well-tolerated in patients with subacute or chronic total occlusion of the ICA.
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Abstract
Patients with less severe obstructive sleep apnoea (OSA) are usually prescribed oral appliances and/or smaller optimal nasal continuous positive airway pressure (P(nCPAP)) in nCPAP therapy. We hypothesised that OSA patients with greater P(nCPAP) would not respond favourably to oral appliances. Oral appliances were inserted in nCPAP users after washing-out the nCPAP effect. Follow-up polysomnography was undertaken with the adjusted oral appliance in place. The predictability of P(nCPAP) was evaluated with receiver-operating characteristic (ROC) curves. The median baseline apnoea/hypopnoea index (AHI) was reduced with the oral appliance from 36 to 12 events.h(-1) in 35 patients. When responders were defined as patients showing a follow-up AHI of <5 events.h(-1) with >50% reduction in baseline AHI, the area under the ROC curve for P(nCPAP) was 0.76. The best cut-off value of P(nCPAP) turned out to be 10.5 cmH(2)O with a high negative predictive value (0.93) and a low negative likelihood ratio (0.18). OSA patients with a P(nCPAP) of >10.5 cmH( 2)O are unlikely to respond to oral appliance therapy. This prediction is clinically helpful to both OSA patients and medical personnel in discussing oral appliances as a temporary substitute and/or alternative for nCPAP.
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Association of TLR4 polymorphisms with Behcet's disease in a Korean population. Rheumatology (Oxford) 2009; 48:638-42. [DOI: 10.1093/rheumatology/kep077] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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Use of Dyna-CT Angiography in Neuroendovascular Decision-Making. A Case Report. Interv Neuroradiol 2009; 15:67-72. [PMID: 20465931 DOI: 10.1177/159101990901500110] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2008] [Accepted: 09/21/2008] [Indexed: 11/15/2022] Open
Abstract
SUMMARY A successful neuroendovascular procedure depends on accurate anatomical understanding of a target vessel in relation to surrounding anatomical structures or endovascular devices, such as coils and stents. During an endovascular procedure, with conventional or three dimensional (3D) rotational angiography, this type of information is extremely difficult to obtain in a timely manner. To overcome this drawback, a DynaCT was combined with low dose contrast injection to create CT angiography (CTA)-like images (DynaCTA). The images obtained were similar to those of conventional CTA but with better quality in analyzing vessels to surrounding anatomical structures and endovascular devices while the patient was on the table. The authors present three illustrative cases in which information added by the DynaCTA helped improve understanding of anatomy, and affected our clinical decision-making. Although better quality images may be obtained by other imaging modalities or careful angiographic interpretations, DynaCTA can be an easy and effective rescue technique worth keeping in mind in clarifying the relation of a vessel to surrounding anatomy.
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Crystal structure of the muramidase domain of FlgJ, a putative flagellar rod cap protein. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308091757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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X-ray structural studies of SalmonellaFlgA, a periplasmic chaperone for flagellar P-ring assembly. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308089228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Molecular mechanisms of self-assembly and motion of the bacterial flagellum. Acta Crystallogr A 2008. [DOI: 10.1107/s010876730809569x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Abstract
CARD15 was first identified as a susceptibility gene for Crohn's disease. More recently, CARD15 mutations were shown to be associated with the pediatric granulomatous inflammatory diseases, Blau syndrome and early-onset sarcoidosis (EOS). The aim of the present study was to evaluate whether CARD15 variants also play a role in patients with ordinary sarcoidosis other than EOS. We enrolled 135 Japanese sarcoidosis patients with uveitis as well as 95 healthy individuals and performed mutation analysis by direct sequencing of CARD15 exon 4. Direct DNA sequencing in the sarcoidosis patients showed eight CARD15 variants, including five novel mutations (13402C>T, 13543C>T, 13775C>A, 13937G>A, and 14079C>T). Compared with healthy individuals, CARD15 mutations are not common in the Japanese patients with sarcoidosis. Based on the results, we examined the clinical manifestations in patients with sarcoidosis according to their CARD15 mutations. Sarcoidosis patients with these mutations have no specific clinical features with regard to course of the disease or disease severity. Our results indicate that in general, CARD15 mutations may not contribute to the risk of sarcoidosis.
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A new hemostasis valve for neuroendovascular procedures. Interv Neuroradiol 2007; 13:51-3. [PMID: 20566129 DOI: 10.1177/159101990701300106] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2007] [Accepted: 02/15/2007] [Indexed: 11/15/2022] Open
Abstract
SUMMARY A hemostasis valve is routinely used in neuroendovascular procedures to decrease the risk of thromboembolism (1,2) . Recently, a new hemostasis valve that is designed to minimize blood loss has been introduced. We report our initial experience in using this new hemostasis valve. In neuroendovascular procedures, a hemostasis valve is commonly used for continuous irrigation of guide and microcatheters to decrease the risk of thromboembolism(1,2,3). A conventional hemostasis valve has a rotating seal at the end, which is turned open or closed each time a wire or microcatheter/guidewire is introduced or extracted. Often this results in significant back bleeding. When a rotating seal is adjusted suboptimally during a wire or microcatheter manipulation, leakage of pressurized saline from the end of a hemostasis valve results in stagnation of blood within a guiding catheter, which becomes a potential source of emboli during a procedure. The Guardian Haemostasis Valve (Zerusa Limited, Galway, Ireland) is a new hemostasis valve that is designed to minimize blood loss during interventional procedures by minimizing the opening time of the valve during wire or microcatheter insertion. A continuous sealing mechanism during wire or microcatheter positioning minimizes blood loss and stagnation of blood within the guide catheter. We report our initial experience with the Guardian hemostasis valve.
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An improved computer-aided diagnosis scheme using the nearest neighbor criterion for determining histological classification of clustered microcalcifications. Methods Inf Med 2007; 46:716-722. [PMID: 18066424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
OBJECTIVES Our purpose was to evaluate the potential usefulness of the nearest neighbor case which was assumed to be the similar case in a CAD scheme for determining the histological classification of clustered microcalcifications. METHODS Our database consisted of current and previous magnification mammograms obtained from 93 patients before and after three-month follow-up examination. It included 11 invasive carcinomas, 19 noninvasive carcinomas of the comedo type, 25 non-invasive carcinomas of the noncomedo type, 23 mastopathies, and 15 fibroadenomas. Six objective features on clustered microcalcifications were first extracted from each of the current and the previous images. The nearest neighbor case was then identified by the Euclidean distance in the previous and current feature-space. The histological classification of an unknown new case in question was assumed to be the same as that of the nearest neighbor case which has the shortest Euclidean distance in our database. RESULTS The classification accuracies were 90.9% for invasive carcinoma, 89.5% for noninvasive carcinoma of the comedo type, 96.0% for noninvasive carcinoma of the noncomedo type, 82.6% for mastopathy, and 93.3% for fibroadenoma. These results were substantially higher than those with our previous CAD scheme. CONCLUSION The nearest neighbor criterion was useful in a CAD scheme for determining the histological classification.
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Treatment of cerebral aneurysms with hydrogel-coated platinum coils (HydroCoil): early single-center experience. AJNR Am J Neuroradiol 2006; 27:1834-40. [PMID: 17032853 PMCID: PMC7977872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
PURPOSE The authors report their experience using HydroCoils in the treatment of cerebral aneurysms. METHODS We performed a retrospective review of the first 100 nonrandomized patients (104 coiled saccular cerebral aneurysms) treated with HydroCoils during a 27-month period. RESULTS The average percentage of HydroCoil by length detached in treated aneurysms was 45.5% (range, 9.9-100%). Immediate postprocedure angiography demonstrated complete aneurysm occlusion in 34%, neck remnant in 35%, and incomplete occlusion in 32%. Immediate procedure-related morbidity and mortality rates were 5.8% and 0%, respectively. Angiographic follow-up was obtained in 51% (51/100 patients; 53/104 aneurysms; average, 10.3 months; range, 0-31 months). In these 53 angiographically followed aneurysms, the overall recanalization rate was 21%: no recanalization occurred in 23 aneurysms with small size (<10 mm)/small neck (<4 mm) (S/S); 4 recanalizations occurred in 7 aneurysms with small size/wide neck (>4 mm) (S/W); 6 recanalizations (27%) occurred in 22 large (L) aneurysms (>10-25 mm, 70% angiographic follow-up); and 1 giant (G) (>25 mm) aneurysm recanalized. A large proportion of aneurysms that were not initially completely occluded were completely occluded on follow-up (15/43 [35%]). Clinical follow-up was obtained in 73 patients (73%; average, 5.3 months; range, 0-24 months): 93% of these patients were neurologically improved or unchanged. Three patients rehemorrhaged and 3 patients with unruptured aneurysms developed delayed hydrocephalus. CONCLUSIONS The overall safety profile of HydroCoils appears acceptable. Preliminary midterm observations suggest less coil compaction/aneurysm recanalization in large aneurysms. However, HydroCoil-related delayed hydrocephalus is a concern.
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Epstein-Barr virus infected cells in the aqueous humour originated from nasal NK/T cell lymphoma. Br J Ophthalmol 2006; 90:244-5. [PMID: 16424544 PMCID: PMC1860178 DOI: 10.1136/bjo.2005.081885] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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The utility of DynaCT in neuroendovascular procedures. AJNR Am J Neuroradiol 2006; 27:330-2. [PMID: 16484404 PMCID: PMC8148775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
The authors present 3 patients who underwent neuroendovascular procedures in which DynaCT produced by a flat-panel detector facilitated management of complications. As part of a combined CT/angiography suite, DynaCT offered the major advantage of immediate detection or exclusion of intracranial complication without patient transfer. The quality of cone-volume CT-generated images produced by DynaCT was sufficient to make a diagnosis.
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MESH Headings
- Adult
- Aneurysm, Ruptured/diagnostic imaging
- Aneurysm, Ruptured/therapy
- Carotid Artery, Internal, Dissection/diagnostic imaging
- Carotid Artery, Internal, Dissection/therapy
- Cerebral Angiography/instrumentation
- Diagnosis, Differential
- Embolization, Therapeutic/instrumentation
- Emergencies
- Equipment Design
- Fatal Outcome
- Hematoma, Subdural/diagnostic imaging
- Hematoma, Subdural/therapy
- Humans
- Image Enhancement/instrumentation
- Image Processing, Computer-Assisted/instrumentation
- Intracranial Aneurysm/diagnostic imaging
- Intracranial Aneurysm/therapy
- Male
- Middle Aged
- Recurrence
- Retreatment
- Subarachnoid Hemorrhage/diagnostic imaging
- Subarachnoid Hemorrhage/therapy
- Tomography, X-Ray Computed/instrumentation
- Treatment Outcome
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Imperfections in friction stir welded zones and their precision non-destructive testing. Studies on characteristics of friction stir welded joints in structural thin aluminium alloys. ACTA ACUST UNITED AC 2006. [DOI: 10.1533/wint.2006.3573] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Decrease in the glyceraldehyde derived advanced glycation end products in the sera of patients with Vogt-Koyanagi-Harada disease. Br J Ophthalmol 2005; 89:1407-9. [PMID: 16234440 PMCID: PMC1772931 DOI: 10.1136/bjo.2005.072678] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND/AIMS Advanced glycation end products (AGEs) are considered to act as mediators of both age related pathologies and diabetic complications. It was recently reported that glyceraldehyde derived AGE (AGE-2) has a strong biological effect on various diseases. The aim of this study was to investigate the serum AGE-2 levels in Vogt-Koyanagi-Harada (VKH) disease. METHODS Sera were obtained from 31 patients with active VKH. 20 of these 31 patients were treated with systemic corticosteroids. As controls, 33 healthy volunteers were also examined. The serum AGE-2 levels were determined with a competitive enzyme linked immunosorbent assay using AGE-2 polyclonal antibody. RESULTS The mean AGE-2 level in the sera of patients with VKH disease was 4.91 (SD 2.23) U/ml, which was significantly lower than that of the healthy control subjects (8.32 (2.94), p<0.001). The average serum AGE-2 level significantly increased to 13.49 (2.17) U/ml after the patients were treated with systemic corticosteroids (p<0.001). CONCLUSIONS These results suggest that AGE-2 may be involved in the onset of VKH disease.
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Crystallization and X-ray analysis of a flagellar hook capping protein. Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305089786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Abstract
Hepatitis C virus (HCV) genomic sequences are known to vary widely among HCV strains, but to date there have been few reports on the genetic variations and dynamics of HCV in an experimental system of HCV replication. In this study, a genetic analysis of HCV replicons obtained in long-term culture of two HCV replicon cells (50-1 and 1B-2R1), which were established from two HCV strains, 1B-1 and 1B-2, respectively, was performed. One person cultured 50-1 cells for 18 months, and two people independently cultured 50-1 cells for 12 months. 1B-2R1 cells were also cultured for 12 months. The whole nucleotide sequences of the three independent replicon RNA clones obtained at several time points were determined. It was observed that genetic mutations in both replicons accumulated in a time-dependent manner, and that the mutation rates of both replicons were approximately 3·0×10−3 base substitutions/site/year. The genetic diversity of both replicons was also enlarged in a time-dependent manner. The colony formation assay by transfection of total RNAs isolated from both replicon cells at different time points into naïve HuH-7 cells revealed that the genetic mutations accumulating with time in both replicons apparently improved colony formation efficiency. Taken together, these results suggest that the HCV replicon system is useful for the analysis of evolutionary dynamics and variations of HCV. Using this replicon cell culture system, it was demonstrated further that neither ribavirin nor its derivative mizoribine accelerated the mutation rate or the increase in the genetic diversity of HCV replicon.
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Establishment of hepatitis C virus replicon cell lines possessing interferon-resistant phenotype. Biochem Biophys Res Commun 2004; 323:299-309. [PMID: 15351737 DOI: 10.1016/j.bbrc.2004.08.091] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2004] [Indexed: 10/26/2022]
Abstract
To clarify the mechanism underlying resistance to interferon (IFN) by the hepatitis C virus (HCV) in patients with chronic hepatitis, we attempted to develop an IFN-resistant HCV replicon from the IFN-sensitive 50-1 replicon established previously. By treating 50-1 replicon cells with a prolonged low-dose treatment of IFN-alpha and then transfecting the total RNA derived from the IFN-alpha-treated replicon cells, we successfully obtained four clones (named 1, 3, 4, and 5) of HCV replicon cells that survived against IFN-alpha (200 IU/ml). These cloned cells were further treated with IFN-alpha or IFN-beta (increased gradually to 2000 or 1000 IU/ml, respectively). This led to four replicon cell lines (alphaR series) possessing the IFN-alpha-resistant phenotype and four replicon cell lines (betaR series) possessing the IFN-beta-resistant phenotype. Furthermore, we obtained an additional replicon cell line (alphaRmix) possessing the IFN-alpha-resistant phenotype by two rounds of prolonged treatment with IFN-alpha and RNA transfection as mentioned above. Characterization of these obtained HCV replicon cell lines revealed that the betaR series were highly resistant to both IFN-alpha and IFN-beta, although the alphaR series containing alphaRmix were only partially resistant to both IFN-alpha and IFN-beta. Genetic analysis of these HCV replicons found one common amino acid substitution in the NS4B and several additional amino acid substitutions in the NS5A of the betaR series, suggesting that these genetic alterations are involved in the IFN resistance of these HCV replicons. These newly established HCV replicon cell lines possessing IFN-resistant phenotypes are the first useful tools for understanding the mechanisms by which HCV acquires IFN resistance in vivo.
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Twist and curvature formation of the hook: a two-domain movement. Acta Crystallogr A 2004. [DOI: 10.1107/s0108767304096904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Establishment of a hepatitis C virus subgenomic replicon derived from human hepatocytes infected in vitro. Biochem Biophys Res Commun 2003; 306:756-66. [PMID: 12810084 DOI: 10.1016/s0006-291x(03)01047-7] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The hepatitis C virus (HCV) replicon system is a potent tool for understanding the mechanisms of HCV replication and proliferation, and for the development of treatments for patients with HCV. Recently, we established an HCV subgenomic replicon (50-1) using HCV genome RNA obtained from the cultured human T cell line MT-2C infected with HCV (isolate 1B-1) in vitro. In order to further obtain other HCV replicons without difficulty, we generated a replicon RNA library derived from human non-neoplastic hepatocytes infected with HCV (isolate 1B-2) in vitro. Upon transfection of the generated RNA library to "cured cells," from which the 50-1 subgenomic replicon was eliminated by prolonged treatment with interferon-alpha, we successfully established a new HCV subgenomic replicon, 1B-2R1. We characterized 1B-2R1 replicon in terms of efficiency of replication, HCV sequence, and sensitivity to interferons. The results revealed that the replication level of the 1B-2R1 replicon was comparable to that of the 50-1 replicon. We also found that the 1B-2R1 replicon possessed an HCV sequence distinct from those of other replicons established to date, and that the 1B-2R1 replicon was sensitive to interferon-alpha, interferon-beta, and interferon-gamma. Taken together, present results indicate that the replicon RNA library generated using an in vitro HCV infection system is useful for the establishment of an HCV subgenomic replicon.
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1369.1-Pos Board # B623.1 – The Bacterial Flagellar Hook Structure. Biophys J 2003. [DOI: 10.1016/s0006-3495(03)70117-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Activities of sitafloxacin (DU-6859a), either singly or in combination with rifampin, against Mycobacterium ulcerans infection in mice. J Chemother 2003; 15:47-52. [PMID: 12678414 DOI: 10.1179/joc.2003.15.1.47] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Efficacy of a new fluoroquinolone, sitafloxacin (DU-6859a), against Mycobacterium ulcerans was evaluated in vivo using the mouse footpad system. The growth of M. ulcerans in mouse footpads was completely inhibited when mice were fed with sitafloxacin at a dose of 25 mg/kg body weight per day; on the other hand similar effects were observed with ofloxacin at a dose of 100 mg/kg body weight per day. In the presence of rifampin, the above dose of sitafloxacin could be reduced by 75% to achieve total inhibition, while, under similar circumstances, the dose of ofloxacin could be reduced by only 50%. Either used singly or in combination with rifampin, the effects of sitafloxacin were bactericidal. The results suggest that sitafloxacin should be evaluated as a chemotherapeutic agent against M. ulcerans infection.
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Crystal structure of HAP3, a flagellar hook-filament junction protein and a junction model. Acta Crystallogr A 2002. [DOI: 10.1107/s0108767302096411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Atomic structure of a core fragment of hook protein, FlgE. Acta Crystallogr A 2002. [DOI: 10.1107/s0108767302096459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Structural mechanisms of self-assembly and polymorphic supercoiling of the bacterial flagellum. Acta Crystallogr A 2002. [DOI: 10.1107/s0108767302085203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
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