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https://www.readbyqxmd.com/read/28092693/pathogenic-streptococcus-strains-employ-novel-escape-strategy-to-inhibit-bacteriostatic-effect-mediated-by-mammalian-peptidoglycan-recognition-protein
#1
Jing Wang, Youjun Feng, Changjun Wang, Swaminath Srinivas, Chen Chen, Hui Liao, Elaine He, Shibo Jiang, Jiaqi Tang
Pathogenic streptococcal species are responsible for some of the most lethal and prevalent animal and human infections. Previous reports have identified a candidate pathogenicity island (PAI) in two highly virulent clinical isolates of Streptococcus suis type 2 (SS2), a causative agent of high-mortality streptococcal toxic shock syndrome (STSS). This PAI contains a Type-IVC secretion system C subgroup (Type-IVC secretion system) that is involved in the secretion of unknown pathogenic effectors that are responsible for STSS caused by highly virulent strains of SS2...
January 16, 2017: Cellular Microbiology
https://www.readbyqxmd.com/read/28090262/rapidly-growing-right-ventricular-outflow-tract-mass-in-patient-with-sarcomatoid-renal-cell-carcinoma
#2
Jongmin Hwang, Yong Hyun Park, Kyung Un Choi, Jeong Su Kim, Ki Won Hwang, Sang Hyun Lee, Min Ku Chon, Soo Yong Lee, Dae Sung Lee
Cardiac metastasis from renal cell carcinoma (RCC) without inferior vena cava (IVC) involvements is extremely rare with few reported cases. Sarcomatoid RCC with rhabdoid feature is a rare pathologic type of RCC having aggressive behavior due to great metastatic potential. Here, we report a case of rapidly growing cardiac metastasis of RCC which brought on right ventricular outflow tract (RVOT) obstruction without IVC and right atrial involvement in a 61-year-old woman. Cardiac arrest occurred during radical nephrectomy and echocardiography revealed mass nearly obstructing the RVOT which was not recognized by preoperative echocardiography 1 month ago...
December 2016: Journal of Cardiovascular Ultrasound
https://www.readbyqxmd.com/read/28090072/reconsideration-of-inferior-vena-cava-parameters-for-estimating-right-atrial-pressure-in-an-east-asian-population%C3%A3-comparative-simultaneous-ultrasound-catheterization-study
#3
Takayuki Kawata, Masao Daimon, Seitetsu L Lee, Koichi Kimura, Naoko Sawada, Shuo-Ju Chiang, Keitaro Mahara, Takeshi Okubo, Tomoko Nakao, Megumi Hirokawa, Boqing Xu, Tomoko S Kato, Masafumi Watanabe, Yutaka Yatomi, Issei Komuro
BACKGROUND: Ultrasound measurements of the inferior vena cava (IVC) diameter (IVCD), together with its respiratory variation, provide a noninvasive estimate of right atrial pressure (RAP). However, there is a paucity of studies that have compared this technique with simultaneous catheterization. We explored the best cut-off values of IVC parameters for elevated RAP in comparison with RAP measured by catheterization.Methods and Results:We prospectively enrolled 120 East Asian patients who were scheduled for catheterization...
January 13, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28079799/risk-factors-for-recollapse-of-the-augmented-vertebrae-after-percutaneous-vertebroplasty-for-osteoporotic-vertebral-fractures-with-intravertebral-vacuum-cleft
#4
Weibo Yu, De Liang, Zhensong Yao, Ting Qiu, Linqiang Ye, Xuecheng Huang, Xiaobing Jiang
To determine risk factors related to recollapse of the augmented vertebrae after percutaneous vertebroplasty (PVP) for osteoporotic vertebral compression fractures (OVCFs) with intravertebral vacuum cleft (IVC).Fifty-two patients treated with PVP for single OVCFs with the IVC were retrospectively reviewed. The follow-up period was at least 2 years. Vertebral height loss ≥15% or kyphotic angle ≥10° at the final follow-up in relation to the immediately postoperative values were adopted as a definition of recollapse of the augmented vertebrae...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28078843/association-between-expression-of-cumulus-expansion-markers-and-real-time-proliferation-of-porcine-follicular-granulosa-cells-in-a-primary-cell-culture-model
#5
S Ciesiółka, J Budna, A Bryja, W Kranc, A Chachuła, M Dyszkiewicz-Konwińska, H Piotrowska, D Bukowska, P Antosik, M Bruska, K P Brüssow, M Nowicki, M Zabel, B Kempisty
Folliculogenesis is a compound process that involves both ovarian follicle growth and oocyte development, which is tightly attached to the follicular wall. During this process, cells that form the follicle structure undergo substantial morphological and molecular modifications that finally lead to differentiation and specialization of ovarian follicular cells. The differentiation of ovarian cells encompasses formation of follicle, which is composed of theca (TCs), mural granulosa (GCs), and cumulus cells (CCs)...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28078841/differential-expression-and-distribution-of-cytokeratins-and-vimentin-in-buccal-pouch-mucosal-cells-during-real-time-cell-proliferation-research-based-on-a-porcine-model
#6
A Bryja, M Dyszkiewicz-Konwińska, A Chachuła, S Ciesiółka, W Kranc, D Bukowska, P Antosik, M Bruska, M Nowicki, M Zabel, B Kempisty
In recent years, buccal pouch oral mucosa cells were used as a source of potential biological grafting material in advanced tissue engineering. However, there are several limitations in the process of graft fabrication: donor and recipient patient availability as well as an incomplete knowledge of in vitro procedures related to tissue surgical recovery, in vitro cell culture (IVC) and/or tissue processing in “human somatic cell therapy.” Therefore, the animal model for oral mucosa grafting is still recognized as a source for xenografts and a useful model for biomedical research...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28070651/inferior-vena-cava-involvement-in-children-with-wilms-tumor
#7
Abeer Al Diab, Nader Hirmas, Abdellatif Almousa, Ramiz Abu-Hijlih, Fatinah Aljlouni, Iyad Sultan, Khalil Ghandour
OBJECTIVES: Retrospective review of children with WT thrombus involving the IVC. METHODS: We reviewed the charts of 123 patients with WT diagnosed between January 2006 and December 2015. Patients with caval tumor thrombus were identified, demographic data, radiological images, extent of thrombus, chemo- and radiotherapy, surgical approach, pathology reports and outcomes were analyzed. RESULTS: IVC involvement was identified in 11 patients (9%)...
January 9, 2017: Pediatric Surgery International
https://www.readbyqxmd.com/read/28068873/patterns-of-treatment-failure-in-anaplastic-thyroid-carcinoma
#8
Sarika N Rao, Mark Zafereo, Ramona Dadu, Naifa Busaidy, Kenneth Hess, Gilbert J Cote, Michelle D Williams, William Nassib William, Vlad C Sandulache, Neil D Gross, Brandon Gunn, Charles Lu, Renata Ferrarotto, Stephen Y Lai, Maria Cabanillas
BACKGROUND: Anaplastic thyroid cancer (ATC) is one of the most lethal forms of cancer with a high mortality rate. Current guidelines support surgery for resectable ATC followed by external beam radiation therapy (EBRT) with or without chemotherapy. Treatment for those who are unresectable is palliative. Our goal was to examine first-line therapies as well as the role of genomic profiling in an effort better understand how to approach ATC. METHODS: This is a retrospective study of ATC patients who were seen at our institution from 1/2013 to 10/2015...
January 9, 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/28068754/intraventricular-cavernous-malformation-review-of-the-literature-and-report-of-three-cases-with-neuroendoscopic-resection
#9
Masoud Shirvani, Alireza Hajimirzabeigi
Intraventricular cavernomas (IVCs) are extremely infrequent and only occur in 2.8 to 10% of patients with cerebral cavernomas. We describe three IVC cases and briefly review previously documented IVC cases in PubMed. Among 136 IVC cases, the mean age of the patients was 36.5 years; the male-to-female ratio was 0.8. The most frequent location was the lateral ventricle (52.6%), and most of the clinical symptoms (74%) were related to mass effects on adjacent brain tissues. Intraventricular hemorrhage occurred in 22...
January 9, 2017: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/28065586/estimation-of-central-venous-pressure-using-the-ratio-of-short-to-long-diameter-from-cross-sectional-images-of-the-inferior-vena-cava
#10
Yoshihiro Seo, Noriko Iida, Masayoshi Yamamoto, Tomoko Machino-Ohtsuka, Tomoko Ishizu, Kazutaka Aonuma
BACKGROUND: Long-axis images of the inferior vena cava (IVC) have limitations as surrogates for IVC morphology in grading central venous pressure (CVP) by two-dimensional echocardiography (2DE), because of the various cross-sectional morphologies and the translational motion of the IVC induced by sniffing. On the basis of the relationship between venous pressure and compliance, it was hypothesized that the cross-sectional morphology of the IVC, which was obtained using three-dimensional echocardiography, might estimate CVP more accurately compared with standard grading by 2DE...
January 5, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28058704/safety-and-efficacy-of-placing-internal-jugular-dialysis-catheter-tip-in-the-inferior-vena-cava
#11
Michael A M Mayer, Vinaya Soundararajan, Ramesh Soundararajan
PURPOSE: To assess the efficacy and safety of placing the tip of the internal jugular (IJ) hemodialysis catheter in the inferior vena cava (IVC) in situations where it does not work well when placed in the right atrium. METHODS: The medical records of chronic hemodialysis patients at an outpatient vascular intervention facility were retrospectively reviewed. Out of the 831 patients who had dialysis catheters exchanged over a 4-year period, 13 patients were identified who underwent catheter exchanges where the tip of the catheter was placed in the IVC via the IJ approach...
January 3, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28050077/retrocaval-ureter-or-preureteral-vena-cava-lest-we-forget-this-rare-cause-of-hydronephrosis
#12
Saikat Bhattacharjee, Sunil Sanga, Pooja Gupta, R A George
Retrocaval ureter or circumcaval ureter is a rare congenital abnormality arising from dysgenesis of the inferior vena cava (IVC) that results in the right ureter coursing behind and medial to the IVC. The ideal nomenclature for the anomaly is preureteral vena cava, keeping in mind the aberrant embryology. It can result in hydronephrosis and is a rare cause of long-standing cyclical pain abdomen. Ultrasound, intravenous urography, nuclear scintigraphy, computed tomography urography (CTU) and magnetic resonance urography (MRU) have been used in the diagnosis of this abnormality but CTU, with its ability to depict the abnormality in three dimensions gives the most "wholesome" solution to its diagnosis...
December 2016: Medical Journal, Armed Forces India
https://www.readbyqxmd.com/read/28046769/su-g-iep4-15-ultrasound-imaging-of-absorbable-inferior-vena-cava-filters-for-proper-placement
#13
T Mitcham, R Bouchard, A Melancon, M Eggers, M Melancon
PURPOSE: Inferior vena cava filters (IVCFs) are used in patients with a high risk of pulmonary embolism in situations when the use of blood thinning drugs would be inappropriate. These filters are implanted under x-ray guidance; however, this provides a dose of ionizing radiation to both patient and physician. B-mode ultrasound (US) imaging allows for localization of certain implanted devices without radiation dose concerns. The goal of this study was to investigate the feasibility of imaging the placement of absorbable IVCFs using US imaging to alleviate the dosage concern inherent to fluoroscopy...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28045672/catheter-directed-fibrinolysis-of-submassive-pulmonary-embolism-after-ivc-filter-migration-to-renal-veins
#14
Kershaw V Patel, Jeffrey A Leef, John E Blair, Atman P Shah, Sandeep Nathan, Jonathan D Paul
A 76-year-old male presented with a submassive pulmonary embolism despite having an inferior vena cava (IVC) filter. Imaging demonstrated pulmonary artery emboli and a deep vein thrombosis in the left common femoral vein. Venography revealed the IVC filter with struts extending into the left and right renal veins. A new IVC filter was deployed below the prior filter. This case demonstrates IVC filter migration complicated by a submassive pulmonary embolism.
January 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/28042557/can-pre-retrieval-computed-tomography-predict-the-difficult-removal-of-an-implementing-an-inferior-vena-cava-filter
#15
Shinho Hong, Keun-Myoung Park, Yong Sun Jeon, Soon Gu Cho, Kee Chun Hong, Woo Young Shin, Yun-Mee Choe
PURPOSE: Implementing an inferior vena cava (IVC) filter is a relatively safe procedure but potential negative long-term effects. The complications for filter retrieval have been noted. We examined filter characteristics on pre-retrieval computed tomography (CT) that were associated with complicated retrieval (CR) of IVC filters. MATERIALS AND METHODS: A retrospective review of IVC filter retrievals between January 2008 and June 2014 was performed to identify patients who had undergone a pre-retrieval CT for IVC filter retrieval...
December 2016: Vascular Specialist International
https://www.readbyqxmd.com/read/28040280/management-and-outcome-of-patients-with-acute-myocardial-infarction-presenting-with-pacemaker-rhythm
#16
Noemi Bertel, Fabienne Witassek, Milo Puhan, Paul Erne, Hans Rickli, Barbara Naegeli, Giovanni Pedrazzini, Jean-Christophe Stauffer, Dragana Radovanovic
BACKGROUND: Diagnosis of acute myocardial infarction (MI) is challenging in pacemaker patients. Little is known about this patient group. METHODS: Patients with MI enrolled in the Swiss national AMIS Plus registry between January 2005 and December 2015 were analyzed. All patients with either paced ventricular rhythm or sinus rhythm with intrinsic ventricular conduction (IVC) were included in this study. Outcomes using crude data and propensity score matching were compared between patients with pacemaker rhythm and patients with IVC...
December 20, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/28038721/assessment-of-inferior-vena-cava-diameter-by-echocardiography-in-normal-indian-population-a-prospective-observational-study
#17
Shivanand Patil, Santosh Jadhav, Natraj Shetty, Jayashree Kharge, Beeresha Puttegowda, Rangraj Ramalingam, Manjunath Nanjappa Cholenahally
BACKGROUND: The assessment of the IVC diameter is self explanatory for evaluation of the individuals' volume status. Studies regarding IVC diameter estimation in normal individuals are scarce. AIM: The present study aimed to define normal criteria of size and dynamics of the inferior vena cava (IVC) by M-mode echocardiography in normal individuals. METHODS: This was a prospective, single-center, observational study carried out at Sri Jayadeva Institute of Cardiovascular Sciences and Research between December 2011 and April 2014...
December 2016: Indian Heart Journal
https://www.readbyqxmd.com/read/28033076/a-simplified-technique-for-interventional-extracardiac-fontan
#18
Sudesh Prabhu, Ben Anderson, Cameron Ward, Tom Karl, Nelson Alphonso
PURPOSE: We report a simple technique for an interventional extracardiac Fontan (ECF) procedure. DESCRIPTION: At the preparatory stage along with a bidirectional cavopulmonary connection (BCPC; cardiopulmonary bypass), a short piece of polytetrafluoroethylene (PTFE) tube graft is anastomosed to the inferior surface of the right pulmonary artery. Another longer PTFE graft is anastomosed to the transected inferior vena cava (IVC). A large medial opening in the lower PTFE graft is anastomosed to an atriotomy...
January 2017: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/28031042/transitional-cell-carcinoma-with-extension-of-the-renal-vein-and-ivc-tumor-thrombus-report-of-three-cases-and-literature-review
#19
Mingyang Li, An Shi, Wen Kong, Jin Zhang, Yonghui Chen, Jiwei Huang, Yiran Huang
BACKGROUND: Transitional cell carcinoma (TCC) originating from the renal pelvis with a venous tumor thrombus is a rare entity. However, clinicians should be aware of it because of its high malignancy and poor prognosis. CASE PRESENTATION: Here, we report three cases of pathologically confirmed TCC originating from the renal pelvis with extension into the renal vein or inferior vena cava (IVC). Of these patients, two are males and one is female (58~73 years old)...
December 28, 2016: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28030505/ultrasound-assessment-of-volume-responsiveness-in-critically-ill-surgical-patients-two-measurements-are-better-than-one
#20
Sarah B Murthi, Syeda Fatima, Ashely R Menne, Jacob J Glaser, Samuel M Galvagno, Stephen Biederman, Stephen Biederman, Raymond Fang, Hegang Chen, Thomas M Scalea
BACKGROUND: The intended physiologic response to a fluid bolus is an increase in stroke volume (SV). Several ultrasound (US) measures have been shown to be predictive. The best measure(s) in critically ill surgical patients remains unclear. METHODS: This is a prospective observational study in critically ill surgical patients receiving a bolus of crystalloid, colloid or blood. A transthoracic echocardiogram (TTE) was performed before (pre-TTE) and after. A positive volume response (+VR) was defined as a ≥15% increase in SV...
December 23, 2016: Journal of Trauma and Acute Care Surgery
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