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https://www.readbyqxmd.com/read/28634308/-variations-of-the-endoscopic-keyhole-transcranial-approach
#1
Tadashi Watanabe
No abstract text is available yet for this article.
June 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/28620232/real-time-monitoring-of-laser-powder-bed-fusion-process-using-high-speed-x-ray-imaging-and-diffraction
#2
Cang Zhao, Kamel Fezzaa, Ross W Cunningham, Haidan Wen, Francesco De Carlo, Lianyi Chen, Anthony D Rollett, Tao Sun
We employ the high-speed synchrotron hard X-ray imaging and diffraction techniques to monitor the laser powder bed fusion (LPBF) process of Ti-6Al-4V in situ and in real time. We demonstrate that many scientifically and technologically significant phenomena in LPBF, including melt pool dynamics, powder ejection, rapid solidification, and phase transformation, can be probed with unprecedented spatial and temporal resolutions. In particular, the keyhole pore formation is experimentally revealed with high spatial and temporal resolutions...
June 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28617827/nog-hil-4-tg-a-new-humanized-mouse-model-for-producing-tumor-antigen-specific-igg-antibody-by-peptide-vaccination
#3
Yoshie Kametani, Ikumi Katano, Asuka Miyamoto, Yusuke Kikuchi, Ryoji Ito, Yukari Muguruma, Banri Tsuda, Sonoko Habu, Yutaka Tokuda, Kiyoshi Ando, Mamoru Ito
Immunodeficient mice transplanted with human peripheral blood mononuclear cells (PBMCs) are promising tools to evaluate human immune responses to vaccines. However, these mice usually develop severe graft-versus-host disease (GVHD), which makes estimation of antigen-specific IgG production after antigen immunization difficult. To evaluate antigen-specific IgG responses in PBMC-transplanted immunodeficient mice, we developed a novel NOD/Shi-scid-IL2rγnull (NOG) mouse strain that systemically expresses the human IL-4 gene (NOG-hIL-4-Tg)...
2017: PloS One
https://www.readbyqxmd.com/read/28607115/surface-lamp-2-is-an-endocytic-receptor-that-diverts-antigen-internalized-by-human-dendritic-cells-into-highly-immunogenic-exosomes
#4
Dario Armando Leone, Andrea Peschel, Markus Brown, Helga Schachner, Miriam J Ball, Marianna Gyuraszova, Ulrike Salzer-Muhar, Minoru Fukuda, Caterina Vizzardelli, Barbara Bohle, Andrew J Rees, Renate Kain
The lysosome-associated membrane protein (LAMP) family includes the dendritic cell endocytic receptors DC-LAMP and CD68, as well as LAMP-1 and LAMP-2. In this study we identify LAMP-1 (CD107a) and LAMP-2 (CD107b) on the surface of human monocyte-derived dendritic cells (MoDC) and show only LAMP-2 is internalized after ligation by specific Abs, including H4B4, and traffics rapidly but transiently to the MHC class II loading compartment, as does Ag conjugated to H4B4. However, pulsing MoDC with conjugates of primary (keyhole limpet hemocyanin; KLH) and recall (Bet v 1) Ags (H4B4*KLH and H4B4*Bet v 1) induced significantly less CD4 cell proliferation than pulsing with native Ag or Ag conjugated to control mAb (ISO*KLH and ISO*Bet v 1)...
June 12, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28592796/immunochemical-approach-for-monitoring-of-structural-transition-of-apoa-i-upon-hdl-formation-using-novel-monoclonal-antibodies
#5
Hitoshi Kimura, Shiho Mikawa, Chiharu Mizuguchi, Yuki Horie, Izumi Morita, Hiroyuki Oyama, Takashi Ohgita, Kazuchika Nishitsuji, Atsuko Takeuchi, Sissel Lund-Katz, Kenichi Akaji, Norihiro Kobayashi, Hiroyuki Saito
Apolipoprotein A-I (apoA-I) undergoes a large conformational reorganization during remodeling of high-density lipoprotein (HDL) particles. To detect structural transition of apoA-I upon HDL formation, we developed novel monoclonal antibodies (mAbs). Splenocytes from BALB/c mice immunized with a recombinant human apoA-I, with or without conjugation with keyhole limpet hemocyanin, were fused with P3/NS1/1-Ag4-1 myeloma cells. After the HAT-selection and cloning, we established nine hybridoma clones secreting anti-apoA-I mAbs in which four mAbs recognize epitopes on the N-terminal half of apoA-I while the other five mAbs recognize the central region...
June 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28584703/patterns-of-bleaching-and-mortality-following-widespread-warming-events-in-2014-and-2015-at-the-hanauma-bay-nature-preserve-hawai-i
#6
Ku'ulei S Rodgers, Keisha D Bahr, Paul L Jokiel, Angela Richards Donà
Drastic increases in global carbon emissions in the past century have led to elevated sea surface temperatures that negatively affect coral reef organisms. Worldwide coral bleaching-related mortality is increasing and data has shown even isolated and protected reefs are vulnerable to the effects of global climate change. In 2014 and 2015, coral reefs in the main Hawaiian Islands (MHI) suffered up to 90% bleaching, with higher than 50% subsequent mortality in some areas. The location and severity of bleaching and mortality was strongly influenced by the spatial and temporal patterns of elevated seawater temperatures...
2017: PeerJ
https://www.readbyqxmd.com/read/28584424/two-piece-obturator-using-lock-and-key-mechanism
#7
Prema Sukumaran, Michael R Fenlon
This paper describes a method used for the fabrication of a two-piece denture obturator for a patient who had surgical removal of the premaxilla due to squamous cell carcinoma. The patient had been wearing a two-piece obturator but encountered difficulty in inserting the prosthesis. In this case report, a lock-and-key mechanism was used to easily assemble the two-piece prosthesis intraorally. A keyhole was designed on the obturator to act as the lock while the denture was used as the key that fitted into the keyhole...
April 2017: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/28577919/immunization-of-tg-appswe-psen1de9-mice-with-a%C3%AE-3-10-klh-vaccine-prevents-synaptic-deficits-of-alzheimer-s-disease
#8
Yuan Meng, Li Ding, HuiYi Zhang, WenChao Yin, Yi Yan, YunPeng Cao
The amyloid cascade hypothesis is widely accepted by researchers as the mechanism of Alzheimer's disease. Active immunization to eliminate Aβ depositions has been used in preclinical and clinical studies. Aβ3-10-KLH is a vaccine of the Aβ3-10 peptide combined with keyhole limpet hemocyanin (KLH). We immunized 2.5-month-old Tg-APPswe/PSEN1dE9 mice with Aβ3-10-KLH peptide and Aβ1-42 peptide to eliminate Aβ deposits in the brains of these transgenic mice. The results of immunohistochemical staining and transmission electron microscopy detection indicated that our new vaccine was more advantageous in protecting synaptic function and structure than the Aβ1-42 peptide...
May 31, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28562666/quantitative-analysis-of-the-cd4-t-cell-response-to-therapeutic-antibodies-in-healthy-donors-using-a-novel-t-cell-pbmc-assay
#9
Heidi S Schultz, Stine Louise Reedtz-Runge, B Thomas Bäckström, Kasper Lamberth, Christian R Pedersen, Anne M Kvarnhammar
Many biopharmaceuticals (BPs) are known to be immunogenic in the clinic, which can result in modified pharmacokinetics, reduced efficacy, allergic reactions and anaphylaxis. During recent years, several technologies to predict immunogenicity have been introduced, but the predictive value is still considered low. Thus, there is an unmet medical need for optimization of such technologies. The generation of T cell dependent high affinity anti-drug antibodies plays a key role in clinical immunogenicity. This study aimed at developing and evaluating a novel in vitro T cell:PBMC assay for prediction of the immunogenicity potential of BPs...
2017: PloS One
https://www.readbyqxmd.com/read/28537884/a-cancer-vaccine-based-on-fluorine-modified-sialyl-tn-induces-robust-immune-responses-in-a-murine-model
#10
Chengcheng Song, Xiu-Jing Zheng, Chang-Cheng Liu, Yifa Zhou, Xin-Shan Ye
Development of an effective vaccine to target tumor associated carbohydrate antigens, aberrantly expressed on the cell surface of various carcinomas, is an appealing approach toward cancer immunotherapy. However, a major problem of carbohydrate antigens is their poor immunogenicity. Immunization with modified-carbohydrate antigens could improve the immunogenicity and induce cross reaction with the native carbohydrate antigens. In this study, we investigated the antitumor ability of three fluoro-substituted sialyl-Tn (STn) analogues (2, 3, 4) coupled to KLH (keyhole limpet hemocyanin) and studied the mechanism of tumor immunotherapy of the vaccines in a murine model of colon cancer...
May 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28521355/minimally-invasive-middle-fossa-keyhole-craniectomy-for-repair-of-superior-semicircular-canal-dehiscence
#11
Trieu Vanessa, Panayiotis E Pelargos, Marko Spasic, Lawrance K Chung, Brittany Voth, Nolan Ung, Quinton Gopen, Isaac Yang
BACKGROUND: Superior semicircular canal dehiscence (SSCD) presents with varying degrees of auditory and vestibular dysfunction. The condition is confirmed on high-resolution computed tomography (CT) imaging, and symptoms are often improved by surgical repair. Although a classic middle fossa craniotomy has been used with good results, recent advances in technique have allowed for modification of the traditional approach into a smaller skin incision and a minimally invasive middle fossa keyhole craniectomy roughly 1...
June 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28520789/antigen-specific-immunoglobulin-variable-region-sequencing-measures-humoral-immune-response-to-vaccination-in-the-equine-neonate
#12
Rebecca L Tallmadge, Steven C Miller, Stephen A Parry, Maria Julia B Felippe
The value of prophylactic neonatal vaccination is challenged by the interference of passively transferred maternal antibodies and immune competence at birth. Taken our previous studies on equine B cell ontogeny, we hypothesized that the equine neonate generates a diverse immunoglobulin repertoire in response to vaccination, independently of circulating maternal antibodies. In this study, equine neonates were vaccinated with 3 doses of keyhole limpet hemocyanin (KLH) or equine influenza vaccine, and humoral immune responses were assessed using antigen-specific serum antibodies and B cell Ig variable region sequencing...
2017: PloS One
https://www.readbyqxmd.com/read/28512616/surgical-management-of-syringomyelia-associated-with-spinal-adhesive-arachnoiditis-a-late-complication-of-tuberculous-meningitis-a-case-report
#13
Jun Seok Lee, Geun Sung Song, Dong Wuk Son
Syringomyelia associated with tuberculous meningitis is an extremely rare condition. Only a few studies have reported clinical experience with syringomyelia as a late complication of tuberculous meningitis. Twenty-six years after a tuberculous meningitis episode, a 44-year-old man presented with progressively worsening spastic paresis of the lower limbs and impaired urinary function for 2 years. Radiological examination revealed syringomyelia extending from the level of C2 to T9 and arachnoiditis with atrophy of the spinal cord between C2 and T3...
April 2017: Korean Journal of Neurotrauma
https://www.readbyqxmd.com/read/28512043/endoscopic-assisted-supraorbital-keyhole-approach-or-endoscopic-endonasal-approach-in-case-of-tuberculum-sellae-meningioma-which-surgical-route-should-be-favoured
#14
Stefan Linsler, Gerrit Fischer, Volodymyr Skliarenko, Axel Stadie, Joachim Oertel
OBJECTIVE: Keyhole approaches are currently under investigation for skull base tumor surgery. They are expected to have a low complication rate with the same successful resection rate compared to endoscopic endonasal procedures. In this study, the authors compare their current series of tuberculum sellae meningiomas resected via an endoscopic endonasal or microsurgical supraorbital keyhole approach. METHODS: Between 2011 and 2016, 16 patients were treated using the supraorbital keyhole procedure and 6 patients received an endoscopic endonasal procedure...
May 13, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28490152/keyhole-approach-and-neuroendoscopy-for-cerebral-aneurysms
#15
REVIEW
Won-Sang Cho, Jeong Eun Kim, Hyun-Seung Kang, Young-Je Son, Jae Seung Bang, Chang Wan Oh
Treating diseases in the field of neurosurgery has progressed concomitantly with technical advances. Here, as a surgical armamentarium for the treatment of cerebral aneurysms, the history and present status of the keyhole approach and the use of neuroendoscopy are reviewed, including our clinical data. The major significance of keyhole approach is to expose an essential space toward a target, and to minimize brain exposure and retraction. Among several kinds of keyhole approaches, representative keyhole approaches for anterior circulation aneurysms include superciliary and lateral supraorbital, frontolateral, mini-pterional and mini-interhemispheric approaches...
May 2017: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/28485089/materials-nanoarchitecturing-via-cation-mediated-protein-assembly-making-limpet-teeth-without-mineral
#16
Tina Ukmar-Godec, Luca Bertinetti, John W C Dunlop, Aljaž Godec, Michal A Grabiger, Admir Masic, Huynh Nguyen, Igor Zlotnikov, Paul Zaslansky, Damien Faivre
Teeth are designed to deliver high forces while withstanding the generated stresses. Aside from isolated mineral-free exception (e.g., marine polychaetes and squids), minerals are thought to be indispensable for tooth-hardening and durability. Here, the unmineralized teeth of the giant keyhole limpet (Megathura crenulata) are shown to attain a stiffness, which is twofold higher than any known organic biogenic structures. In these teeth, protein and chitin fibers establish a stiff compact outer shell enclosing a less compact core...
May 9, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28484650/efficacy-of-keyhole-approach-to-carpal-tunnel-syndrome-under-ambulatory-strategy
#17
Rodrigo Ramos-Zúñiga, César J García-Mercado, Iván Segura-Durán, Luis A Zepeda-Gutiérrez
The carpal tunnel syndrome is one of the most common entrapment neuropathies found in humans. Currently, the gold standard is surgical treatment using different modalities. The minimally invasive strategy with high resolution capacity and less morbidity is still a challenge. Methods. Prospective nonrandomised clinical trial in which a minimally invasive microsurgical approach was used following the keyhole principle in 55 consecutive patients and 65 hands under local anesthesia and ambulatory strategy. They were evaluated with stringent inclusion criteria with the Levine severity and functional status scale and with a 2-year follow-up...
2017: Neurology Research International
https://www.readbyqxmd.com/read/28483552/inhibition-of-cyclosporine-a-or-rapamycin-on-t-lymphocyte-counts-and-the-influence-on-the-immune-responses-of-b-lymphocytes-in-flounder-paralichthys-olivaceus
#18
Jing Xing, Yue'e Xiao, Xiaoqian Tang, Xiuzhen Sheng, Wenbin Zhan
In acquired immunity, T lymphocytes regulate the immune responses of B lymphocytes, including the IgM(+) B lymphocyte counts and antibody production. In this paper, Cyclosporine A (CsA) and Rapamycin (RaPa) were used, and their inhibition on T lymphocytes and immune responses of B lymphocytes in flounder (Paralichthys olivaceus) were investigated. Flounder was injected with Keyhole Limpet Hemocyanin (KLH), a mixture of KLH and CsA (KLH + CsA), or a mixture of KLH and RaPa (KLH + RaPa). Then, the proportions of T and IgM(+) B lymphocytes (PT and PB) in peripheral blood leukocytes (PBL) were analysed by flow cytometry (FCM), total antibodies (TA) and KLH specific antibodies (KA) in serum were measured by ELISA, and expression of 9 immune-related genes in the spleen and kidneys were determined using q-PCR...
May 5, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28481886/egg-production-patterns-of-two-invertebrate-species-in-rocky-subtidal-areas-under-different-fishing-regimes-along-the-coast-of-central-chile
#19
Marta Blanco, Andres Ospina-Álvarez, Catherine González, Miriam Fernández
Fishing is a major source of human impact, reducing density and size of a wide range of exploited species in comparison to areas exhibiting strong regulations (no-take and partially protected areas, including Territorial Use Rights for Fisheries, TURFs). Since size and density might have important consequences on reproduction, and therefore natural re-seeding, we monitored adult size, density and potential fecundity of the keyhole limpet (Fissurella latimarginata) and the red sea urchin (Loxechinus albus) in areas under two fishing regimes (TURFs and Open Access Areas, OAAs)...
2017: PloS One
https://www.readbyqxmd.com/read/28479787/indigenous-inexpensive-practice-models-for-skill-development-in-neuroendoscopy
#20
Jitin Bajaj, Yad Ram Yadav, Anurag Pateriya, Vijay Parihar, Shailendra Ratre, Amitesh Dubey
INTRODUCTION: Neurosurgery is a branch having a tough learning curve. Residents generally get very less hands-on exposure for advanced procedures like neuroendoscopy. With the limited number of cadavers available and ethical issues associated with animal models, practice models, and simulators are becoming the able alternative. Most of these simulators are very costly. We tried to build indigenous inexpensive practice models that can help in developing most of the skills of neuroendoscopy...
April 2017: Journal of Neurosciences in Rural Practice
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