imag Novel contact sites between lipid droplets, early endosomes, and the endoplasmic reticulum [Images in Lipid Research] By www.jlr.org Published On :: 2020-11-01T00:05:43-07:00 Full Article
imag Lipid sensing tips the balance for a key cholesterol synthesis enzyme [Images in Lipid Research] By www.jlr.org Published On :: 2020-11-01T00:05:43-07:00 Full Article
imag Accessible cholesterol is localized in bacterial plasma membrane protrusions [Images In Lipid Research] By www.jlr.org Published On :: 2020-12-01T00:05:39-08:00 Full Article
imag Spatial profiling of gangliosides in mouse brain by mass spectrometry imaging [Images In Lipid Research] By www.jlr.org Published On :: 2020-12-01T00:05:39-08:00 Full Article
imag Imaging Mass Spectrometry and Lectin Analysis of N-linked Glycans in Carbohydrate Antigen Defined Pancreatic Cancer Tissues [Research] By www.mcponline.org Published On :: 2020-11-24T13:35:19-08:00 The early detection of pancreatic ductal adenocarcinoma is a complex clinical obstacle yet is key to improving the overall likelihood of patient survival. Current and prospective carbohydrate biomarkers CA19-9 and sTRA are sufficient for surveilling disease progression yet are not approved for delineating PDAC from other abdominal cancers and non-cancerous pancreatic pathologies. To further understand these glycan epitopes, an imaging mass spectrometry approach was utilized to assess the N-glycome of the human pancreas and pancreatic cancer in a cohort of PDAC patients represented by tissue microarrays and whole tissue sections. Orthogonally, these same tissues were characterized by multi-round immunofluorescence which defined expression of CA19-9 and sTRA as well as other lectins towards carbohydrate epitopes with the potential to improve PDAC diagnosis. These analyses revealed distinct differences not only in N-glycan spatial localization across both healthy and diseased tissues but importantly between different biomarker-categorized tissue samples. Unique sulfated bi-antennary N-glycans were detected specifically in normal pancreatic islets. N-glycans from CA19-9 expressing tissues tended to be bi-, tri- and tetra-antennary structures with both core and terminal fucose residues and bisecting N-acetylglucosamines. These N-glycans were detected in less abundance in sTRA-expressing tumor tissues, which favored tri- and tetra-antennary structures with polylactosamine extensions. Increased sialylation of N-glycans was detected in all tumor tissues. A candidate new biomarker derived from IMS was further explored by fluorescence staining with selected lectins on the same tissues. The lectins confirmed the expression of the epitopes in cancer cells and revealed different tumor-associated staining patterns between glycans with bisecting GlcNAc and those with terminal GlcNAc. Thus, the combination of lectin-IHC and IMS techniques produces more complete information for tumor classification than the individual analyses alone. These findings potentiate the development of early assessment technologies to rapidly and specifically identify PDAC in the clinic that may directly impact patient outcomes. Full Article
imag The Commonwealth reimagined By www.chathamhouse.org Published On :: Tue, 18 Oct 2022 10:27:13 +0000 The Commonwealth reimagined 8 November 2022 — 6:00PM TO 7:00PM Anonymous (not verified) 18 October 2022 Chatham House and Online Ghana’s minister of foreign Affairs, the Hon. Shirley Ayorkor Botchwey, discusses her vision for a modern Commonwealth and how it can evolve and match demands from its members. The death of HM Queen Elizabeth II has focused attention on the future of the Commonwealth. The Commonwealth is an expanding voluntary organization of 56 independent countries in Africa, Asia, the Americas, Europe, and the Pacific. Its appeal is increasingly beyond the circle of former British colonies – ex-French colonies Togo and Gabon officially joined in October 2022 and the ex-Portuguese colony, Angola, has applied. The Commonwealth Secretariat, established in 1965, is its main intergovernmental agency, which coordinates and carries out much of the Commonwealth’s work, supported by a network of more than 80 organizations. King Charles III now heads the Commonwealth, which is focused on shared goals of prosperity, democracy and peace. However, the future of the Commonwealth and its purpose are unclear, and the organization needs to develop a sharper agenda on what its international contribution can be across its 56 state members and their peoples. The minister discusses key questions including: What should a modern Commonwealth look like and how can it best operate? How can the organization impact policies and actions at a country level? What role will young people play in the future of the Commonwealth? How can the organization harness collective resources and technology to tackle major global issues such as climate change? Can the issue of mobility and immigration among member states be managed? Full Article
imag [68Ga]Ga-PSMA-11 PET/CT-Positive Hepatic Inflammatory Pseudotumor: Possible PSMA-Avid Pitfall in Nuclear Imaging By jnm.snmjournals.org Published On :: 2024-10-01T04:08:08-07:00 Full Article
imag Ultrashort Oncologic Whole-Body [18F]FDG Patlak Imaging Using LAFOV PET By jnm.snmjournals.org Published On :: 2024-10-01T04:08:08-07:00 Methods to shorten [18F]FDG Patlak PET imaging procedures ranging from 65–90 to 20–30 min after injection, using a population-averaged input function (PIF) scaled to patient-specific image-derived input function (IDIF) values, were recently evaluated. The aim of the present study was to explore the feasibility of ultrashort 10-min [18F]FDG Patlak imaging at 55–65 min after injection using a PIF combined with direct Patlak reconstructions to provide reliable quantitative accuracy of lung tumor uptake, compared with a full-duration 65-min acquisition using an IDIF. Methods: Patients underwent a 65-min dynamic PET acquisition on a long-axial-field-of-view (LAFOV) Biograph Vision Quadra PET/CT scanner. Subsequently, direct Patlak reconstructions and image-based (with reconstructed dynamic images) Patlak analyses were performed using both the IDIF (time to relative kinetic equilibrium between blood and tissue concentration (t*) = 30 min) and a scaled PIF at 30–60 min after injection. Next, direct Patlak reconstructions were performed on the system console using only the last 10 min of the acquisition, that is, from 55 to 65 min after injection, and a scaled PIF using maximum crystal ring difference settings of both 85 and 322. Tumor lesion and healthy-tissue uptake was quantified and compared between the differently obtained parametric images to assess quantitative accuracy. Results: Good agreement was obtained between direct- and image-based Patlak analyses using the IDIF (t* = 30 min) and scaled PIF at 30–60 min after injection, performed using the different approaches, with no more than 8.8% deviation in tumor influx rate value (Ki) (mean difference ranging from –0.0022 to 0.0018 mL/[min x g]). When direct Patlak reconstruction was performed on the system console, excellent agreement was found between the use of a scaled PIF at 30–60 min after injection versus 55–65 min after injection, with 2.4% deviation in tumor Ki (median difference, –0.0018 mL/[min x g]; range, –0.0047 to 0.0036 mL/[min x g]). For different maximum crystal ring difference settings using the scan time interval of 55–65 min after injection, only a 0.5% difference (median difference, 0.0000 mL/[min x g]; range, –0.0004 to 0.0013 mL/[min x g]) in tumor Ki was found. Conclusion: Ultrashort whole-body [18F]FDG Patlak imaging is feasible on an LAFOV Biograph Vision Quadra PET/CT system without loss of quantitative accuracy to assess lung tumor uptake compared with a full-duration 65-min acquisition. The ultrashort 10-min direct Patlak reconstruction with PIF allows for its implementation in clinical practice. Full Article
imag Molecular Imaging of p53 in Mouse Models of Cancer Using a Radiolabeled Antibody TAT Conjugate with SPECT By jnm.snmjournals.org Published On :: 2024-10-01T04:08:08-07:00 Mutations of p53 protein occur in over half of all cancers, with profound effects on tumor biology. We present the first—to our knowledge—method for noninvasive visualization of p53 in tumor tissue in vivo, using SPECT, in 3 different models of cancer. Methods: Anti-p53 monoclonal antibodies were conjugated to the cell-penetrating transactivator of transcription (TAT) peptide and a metal ion chelator and then radiolabeled with 111In to allow SPECT imaging. 111In-anti-p53-TAT conjugates were retained longer in cells overexpressing p53-specific than non–p53-specific 111In-mIgG (mouse IgG from murine plasma)-TAT controls, but not in null p53 cells. Results: In vivo SPECT imaging showed enhanced uptake of 111In-anti-p53-TAT, versus 111In-mIgG-TAT, in high-expression p53R175H and medium-expression wild-type p53 but not in null p53 tumor xenografts. The results were confirmed in mice bearing genetically engineered KPC mouse–derived pancreatic ductal adenocarcinoma tumors. Imaging with 111In-anti-p53-TAT was possible in KPC mice bearing spontaneous p53R172H pancreatic ductal adenocarcinoma tumors. Conclusion: We demonstrate the feasibility of noninvasive in vivo molecular imaging of p53 in tumor tissue using a radiolabeled TAT-modified monoclonal antibody. Full Article
imag [68Ga]Ga-RAYZ-8009: A Glypican-3-Targeted Diagnostic Radiopharmaceutical for Hepatocellular Carcinoma Molecular Imaging--A First-in-Human Case Series By jnm.snmjournals.org Published On :: 2024-10-01T04:08:08-07:00 To date, the imaging and diagnosis of hepatocellular carcinoma (HCC) rely on CT/MRI, which have well-known limitations. Glypican-3 (GPC3) is a cell surface receptor highly expressed by HCC but not by normal or cirrhotic liver tissue. Here we report initial clinical results of GPC3-targeted PET imaging with [68Ga]Ga-DOTA-RYZ-GPC3 (RAYZ-8009), a peptide-based GPC3 ligand in patients with known or suspected HCC. Methods: [68Ga]Ga-RAYZ-8009 was obtained after labeling the peptide precursor with 68Ga from a 68Ge/68Ga generator and heating at 90°C for 10 min followed by sterile filtration. After administration of [68Ga]Ga-RAYZ-8009, a dynamic or static PET/CT scan was acquired between 45 min and 4 h after administration. Radiotracer uptake was measured by SUVs for the following tissues: suspected or actual HCC or hepatoblastoma lesions, non–tumor-bearing liver, renal cortex, blood pool in the left ventricle, and gastric fundus. Additionally, tumor–to–healthy-liver ratios (TLRs) were calculated. Results: Twenty-four patients (5 patients in the dynamic protocol; 19 patients in the static protocol) were scanned. No adverse events occurred. Two patients had no lesion detected and did not have HCC during follow-up. In total, 50 lesions were detected and analyzed. The mean SUVmax of these lesions was 19.6 (range, 2.7–95.3), and the mean SUVmean was 10.1 (range, 1.0–49.2) at approximately 60 min after administration. Uptake in non–tumor-bearing liver and blood pool rapidly decreased over time and became negligible 45 min after administration (mean SUVmean, <1.6), with a continuous decline to 4 h after administration (mean SUVmean, 1.0). The opposite was observed for HCC lesions, for which SUVs and TLRs continuously increased for up to 4 h after administration. In individual lesion analysis, TLR was the highest between 60 and 120 min after administration. Uptake in the gastric fundus gradually increased for up to 45 min (to an SUVmax of 31.3) and decreased gradually afterward. Conclusion: [68Ga]Ga-RAYZ-8009 is safe and allows for high-contrast imaging of GPC3-positive HCC, with rapid clearance from most normal organs. Thereby, [68Ga]Ga-RAYZ-8009 is promising for HCC diagnosis and staging. Further research is warranted. Full Article
imag Dual Somatostatin Receptor/18F-FDG PET/CT Imaging in Patients with Well-Differentiated, Grade 2 and 3 Gastroenteropancreatic Neuroendocrine Tumors By jnm.snmjournals.org Published On :: 2024-10-01T04:08:08-07:00 Our purpose was to prospectively assess the distribution of NETPET scores in well-differentiated (WD) grade 2 and 3 gastroenteropancreatic (GEP) neuroendocrine tumors (NETs) and to determine the impact of the NETPET score on clinical management. Methods: This single-arm, institutional ethics review board–approved prospective study included 40 patients with histologically proven WD GEP NETs. 68Ga-DOTATATE PET and 18F-FDG PET were performed within 21 d of each other. NETPET scores were evaluated qualitatively by 2 reviewers, with up to 10 marker lesions selected for each patient. The quantitative parameters that were evaluated included marker lesion SUVmax for each tracer; 18F-FDG/68Ga-DOTATATE SUVmax ratios; functional tumor volume (FTV) and metabolic tumor volume (MTV) on 68Ga-DOTATATE and 18F-FDG PET, respectively; and FTV/MTV ratios. The treatment plan before and after 18F-FDG PET was recorded. Results: There were 22 men and 18 women (mean age, 60.8 y) with grade 2 (n = 24) or grade 3 (n = 16) tumors and a mean Ki-67 index of 16.1%. NETPET scores of P0, P1, P2A, P2B, P3B, P4B, and P5 were documented in 2 (5%), 5 (12.5%), 5 (12.5%) 20 (50%), 2 (5%), 4 (10%), and 2 (5%) patients, respectively. No association was found between the SUVmax of target lesions on 68Ga-DOTATATE and the SUVmax of target lesions on 18F-FDG PET (P = 0.505). 18F-FDG/68Ga-DOTATATE SUVmax ratios were significantly lower for patients with low (P1–P2) primary NETPET scores than for those with high (P3–P5) primary NETPET scores (mean ± SD, 0.20 ± 0.13 and 1.68 ± 1.44, respectively; P < 0.001). MTV on 18F-FDG PET was significantly lower for low primary NETPET scores than for high ones (mean ± SD, 464 ± 601 cm3 and 66 ± 114 cm3, respectively; P = 0.005). A change in the type of management was observed in 42.5% of patients after 18F-FDG PET, with the most common being a change from systemic therapy to peptide receptor radionuclide therapy and from debulking surgery to systemic therapy. Conclusion: There was a heterogeneous distribution of NETPET scores in patients with WD grade 2 and 3 GEP NETs, with more than 1 in 5 patients having a high NETPET score and a frequent change in management after 18F-FDG PET. Quantitative parameters including 18F-FDG/68Ga-DOTATATE SUVmax ratios in target lesions and FTV/MTV ratios can discriminate between patients with high and low NETPET scores. Full Article
imag Composite Prediction Score to Interpret Bone Focal Uptake in Hormone-Sensitive Prostate Cancer Patients Imaged with [18F]PSMA-1007 PET/CT By jnm.snmjournals.org Published On :: 2024-10-01T04:08:08-07:00 Unspecific bone uptake (UBU) related to [18F]PSMA-1007 PET/CT imaging represents a clinical challenge. We aimed to assess whether a combination of clinical, biochemical, and imaging parameters could predict skeletal metastases in patients with [18F]PSMA-1007 bone focal uptake, aiding in result interpretation. Methods: We retrospectively analyzed [18F]PSMA-1007 PET/CT performed in hormone-sensitive prostate cancer (PCa) patients at 3 tertiary-level cancer centers. A fourth center was involved in performing an external validation. For each, a volume of interest was drawn using a threshold method to extract SUVmax, SUVmean, PSMA tumor volume, and total lesion PSMA. The same volume of interest was applied to CT images to calculate the mean Hounsfield units (HUmean) and maximum Hounsfield units. Clinical and laboratory data were collected from electronic medical records. A composite reference standard, including follow-up histopathology, biochemistry, and imaging data, was used to distinguish between PCa bone metastases and UBU. PET readers with less (n = 2) or more (n = 2) experience, masked to the reference standard, were asked to visually rate a subset of focal bone uptake (n = 178) as PCa metastases or not. Results: In total, 448 bone [18F]PSMA-1007 focal uptake specimens were identified in 267 PCa patients. Of the 448 uptake samples, 188 (41.9%) corresponded to PCa metastases. Ongoing androgen deprivation therapy at PET/CT (P < 0.001) with determination of SUVmax (P < 0.001) and HUmean (P < 0.001) independently predicted bone metastases. A composite prediction score, the bone uptake metastatic probability (BUMP) score, achieving an area under the receiver-operating-characteristic curve (AUC) of 0.87, was validated through a 10-fold internal and external validation (n = 89 bone uptake, 51% metastatic; AUC, 0.92). The BUMP score’s AUC was significantly higher than that of HUmean (AUC, 0.62) and remained high among lesions with HUmean in the first tertile (AUC, 0.80). A decision-curve analysis showed a higher net benefit with the score. Compared with the visual assessment, the BUMP score provided added value in terms of specificity in less-experienced PET readers (88% vs. 54%, P < 0.001). Conclusion: The BUMP score accurately distinguished UBU from bone metastases in PCa patients with [18F]PSMA-1007 focal bone uptake at PET imaging, offering additional value compared with the simple assessment of the osteoblastic CT correlate. Its use could help clinicians interpret imaging results, particularly those with less experience, potentially reducing the risk of patient overstaging. Full Article
imag Nuclear Imaging of Bispecific Antibodies on the Rise By jnm.snmjournals.org Published On :: 2024-10-01T04:08:08-07:00 Bispecific antibodies (bsAbs) are engineered to target 2 different epitopes simultaneously. About 75% of the 16 clinically approved bsAbs have entered the clinic internationally since 2022. Hence, research on biomedical imaging of various radiolabeled bsAb scaffolds may serve to improve patient selection for bsAb therapy. Here, we provide a comprehensive overview of recent advances in radiolabeled bsAbs for imaging via PET or SPECT. We compare direct targeting and pretargeting approaches in preclinical and clinical studies in oncologic research. Furthermore, we show preclinical applications of imaging bsAbs in neurodegenerative diseases. Finally, we offer perspectives on the future directions of imaging bsAbs based on their challenges and opportunities. Full Article
imag The Rise of Molecular Image-Guided Robotic Surgery By jnm.snmjournals.org Published On :: 2024-10-01T04:08:08-07:00 Following early acceptance by urologists, the use of surgical robotic platforms is rapidly spreading to other surgical fields. This empowerment of surgical perception via robotic advances occurs in parallel to developments in intraoperative molecular imaging. Convergence of these efforts creates a logical incentive to advance the decades-old image-guided robotics paradigm. This yields new radioguided surgery strategies set to optimally exploit the symbiosis between the growing clinical translation of robotics and molecular imaging. These strategies intend to advance surgical precision by increasing dexterity and optimizing surgical decision-making. In this state-of-the-art review, topic-related developments in chemistry (tracer development) and engineering (medical device development) are discussed, and future scientific robotic growth markets for molecular imaging are presented. Full Article
imag Navigating the Future of Prostate Cancer Care: AI-Driven Imaging and Theranostics Through the Lens of RELAINCE By jnm.snmjournals.org Published On :: 2024-10-01T04:08:08-07:00 Full Article
imag Highlights from GlobusWorld 2024: The Conference for Reimagining Research IT By www.hpcwire.com Published On :: Tue, 11 Jun 2024 19:51:38 +0000 The Globus user conference, now in its 22nd year, brought together over 180 researchers, system administrators, developers, and IT leaders from 55 top research computing centers, national labs, federal agencies, […] The post Highlights from GlobusWorld 2024: The Conference for Reimagining Research IT appeared first on HPCwire. Full Article Features AuroraGPT ChatGPT DOE Globus IRI ScienceBase USGS
imag Reimagining Professional Learning in Delaware By blogs.edweek.org Published On :: Thu, 25 May 2017 00:00:00 +0000 Stephanie Hirsh recently visited several schools in Delaware to see first-hand the impact of the state's redesigned professional learning system. Full Article Delaware
imag Neuronal and Behavioral Responses to Naturalistic Texture Images in Macaque Monkeys By www.jneurosci.org Published On :: 2024-10-16 Corey M. ZiembaOct 16, 2024; 44:e0349242024-e0349242024Systems/Circuits Full Article
imag Neuronal and Behavioral Responses to Naturalistic Texture Images in Macaque Monkeys By www.jneurosci.org Published On :: 2024-10-16T09:30:18-07:00 The visual world is richly adorned with texture, which can serve to delineate important elements of natural scenes. In anesthetized macaque monkeys, selectivity for the statistical features of natural texture is weak in V1, but substantial in V2, suggesting that neuronal activity in V2 might directly support texture perception. To test this, we investigated the relation between single cell activity in macaque V1 and V2 and simultaneously measured behavioral judgments of texture. We generated stimuli along a continuum between naturalistic texture and phase-randomized noise and trained two macaque monkeys to judge whether a sample texture more closely resembled one or the other extreme. Analysis of responses revealed that individual V1 and V2 neurons carried much less information about texture naturalness than behavioral reports. However, the sensitivity of V2 neurons, especially those preferring naturalistic textures, was significantly closer to that of behavior compared with V1. The firing of both V1 and V2 neurons predicted perceptual choices in response to repeated presentations of the same ambiguous stimulus in one monkey, despite low individual neural sensitivity. However, neither population predicted choice in the second monkey. We conclude that neural responses supporting texture perception likely continue to develop downstream of V2. Further, combined with neural data recorded while the same two monkeys performed an orientation discrimination task, our results demonstrate that choice-correlated neural activity in early sensory cortex is unstable across observers and tasks, untethered from neuronal sensitivity, and therefore unlikely to directly reflect the formation of perceptual decisions. Full Article
imag See a Film That Reimagines History on the Malaysian Island That Served as a Refugee Site After the Vietnam War By www.smithsonianmag.com Published On :: Thu, 07 Nov 2024 16:11:03 +0000 The work, now on view at the Smithsonian American Art Museum, tells the story of two characters on the island—the last people alive in the world Full Article
imag Spark!Lab Ignites the Imagination By www.smithsonianmag.com Published On :: Mon, 21 Oct 2024 00:00:00 -0000 Interpretive exhibits coordinator Steven Madewells demonstrates a few experiments at Spark!Lab, an interactive exhibit at the National Museum of American History. Read more at: https://www.smithsonianmag.com/smithsonian-institution/theres-nothing-like-a-sparklab-to-ignite-the-imagination-1-180949007/ Full Article
imag 3D Imaging of the Apollo 11 Capsule - Outside By www.smithsonianmag.com Published On :: Mon, 21 Oct 2024 00:00:00 -0000 Full Article
imag Transporting a Live Elephant Is Exactly as Difficult as You Would Imagine By www.smithsonianmag.com Published On :: Thu, 31 Oct 2024 00:00:00 -0000 The team at the Ol Pejeta Conservancy needs to transport Kinani, a blind male elephant, to a 4,000-acre compound where he'll be able to roam freely without disturbing other wildlife. Weighing in at nearly eight tons, it'll take careful maneuvering and custom equipment to bring the animal to his new sanctuary. Full Article
imag 3D Imaging of the Apollo 11 Capsule - Inside By www.smithsonianmag.com Published On :: Thu, 31 Oct 2024 00:00:00 -0000 Full Article
imag An Algorithm Predicts the Images in a Dream By www.smithsonianmag.com Published On :: Thu, 31 Oct 2024 00:00:00 -0000 A learning simulation, combined with fMRI readings, is able to predict the visualizations seen by a dreamer in real time Full Article
imag See Ten Striking Images From the Bird Photographer of the Year Awards By www.smithsonianmag.com Published On :: Mon, 23 Sep 2024 23:01:00 +0000 The annual contest unveiled its winners, highlighting avian photos that focus on conservation issues, the beauty of birds and their sometimes hilarious behavior Full Article
imag See 15 Winning Images From the Wildlife Photographer of the Year Contest By www.smithsonianmag.com Published On :: Fri, 11 Oct 2024 18:32:50 +0000 Breathtaking shots shine a light on the wonders of wildlife and the threats that human activities pose to the natural world Full Article
imag Jill Biden Unveils a Reimagined White House Tour, Which Invites Visitors to 'Touch, Hear and See' History By www.smithsonianmag.com Published On :: Fri, 01 Nov 2024 18:36:06 +0000 The public tours of the historic residence hadn't been overhauled in decades. For two years, the first lady's office has been working to make them more interactive and educational Full Article
imag Check Out the Stunning New Images of Jupiter From NASA's Juno Spacecraft By www.smithsonianmag.com Published On :: Thu, 07 Nov 2024 19:13:36 +0000 On its 66th flyby of the king of planets, Juno has captured spectacular views of the stormy atmosphere, processed by citizen scientists Full Article
imag See New Images of Pesto, Australia's Enormous Baby Penguin, in His 'Awkward Phase,' Molting His Downy Feathers By www.smithsonianmag.com Published On :: Fri, 01 Nov 2024 11:58:09 +0000 The viral king penguin chick at Sea Life Melbourne Aquarium is beginning to lose his youthful down, a process that will give him his distinctive and waterproof adult plumage Full Article
imag Go Chasing Waterfalls With These 15 Awe-Inspiring Images By www.smithsonianmag.com Published On :: Fri, 25 Oct 2024 13:00:00 +0000 See photographs of the beautiful natural wonders from the Smithsonian Magazine Photo Contest Full Article
imag Images of the Star-Spangled Banner from Across the Country By www.smithsonianmag.com Published On :: Sat, 01 Mar 2014 21:16:54 +0000 See images of the American flag captured by our readers. Full Article
imag Whole-Brain Calcium Imaging in Drosophila during Sleep and Wake By cshprotocols.cshlp.org Published On :: 2024-09-03T07:12:25-07:00 Genetically encoded calcium indicators (GECIs) allow for the noninvasive evaluation of neuronal activity in vivo, and imaging GECIs in Drosophila has become commonplace for understanding neural functions and connectivity in this system. GECIs can also be used as read-outs for studying sleep in this model organism. Here, we describe a methodology for tracking the activity of neurons in the fly brain using a two-photon (2p) microscopy system. This method can be adapted to perform functional studies of neural activity in Drosophila under both spontaneous and evoked conditions, as well as during spontaneous or induced sleep. We first describe a tethering and surgical procedure that allows survival under the microscopy conditions required for long-term recordings. We then outline the steps and reagents required for optogenetic activation of sleep-promoting neurons while simultaneously recording neural activity from the fly brain. We also describe the procedure for recording from two different locations—namely, the top of the head (e.g., to record mushroom body calyx activity) or the back of the head (e.g., to record central complex activity). We also provide different strategies for recording from GECIs confined to the cell body versus the entire neuron. Finally, we describe the steps required for analyzing the multidimensional data that can be acquired. In all, this protocol shows how to perform calcium imaging experiments in tethered flies, with a focus on acquiring spontaneous and induced sleep data. Full Article
imag Visualization of Apoptotic Ovarian Follicles during Aedes aegypti Mosquito Egg Maturation by Fluorescent Imaging Studies By cshprotocols.cshlp.org Published On :: 2024-10-01T07:08:54-07:00 In insects, oocyte resorption (oosorption) or follicular atresia is one of the key physiological processes and evolutionary strategies used to optimize reproductive fitness. Mosquitoes are ideal model organisms for studying egg maturation in arthropods, as their follicle development is initiated only following the ingestion of a blood meal, followed by a carefully orchestrated series of hormonally regulated events leading to egg maturation. A cohort of approximately 100 follicles per mosquito ovary begin developing synchronously. However, a significant fraction of follicles ultimately undergo apoptosis and oosorption, especially when available resources from the blood meal are limited. Therefore, simple, rapid, and reliable techniques to accurately evaluate follicular atresia are necessary to understand mechanisms underlying follicle development in insects. This protocol describes how to detect apoptotic follicle cells within the Aedes aegypti mosquito ovaries using a commercially available fluorescent-labeled inhibitor of caspases (FLICA). Caspases are key players in animal apoptosis. In this assay, the FLICA reagent enters the intracellular compartment of follicles in dissected mosquito ovaries and covalently binds to active caspases. The bound reagent remains within the cell and its fluorescent signal can be observed by confocal microscopy. Although this method was specifically developed for visualizing apoptotic ovarian follicles during Ae. aegypti mosquito egg development, it should be applicable to other mosquito tissues that undergo caspase-mediated program cell death in a time-dependent manner. Full Article
imag Warm days and fallen leaves: Images of autumn in New Brunswick By www.cbc.ca Published On :: Sun, 10 Nov 2024 09:00:00 EST Send your best snaps and video from across the province to cbcnb@cbc.ca Full Article News/Canada/New Brunswick
imag Whole-Brain Electrophysiology and Calcium Imaging in Drosophila during Sleep and Wake By cshprotocols.cshlp.org Published On :: 2024-09-03T07:12:25-07:00 Sleep is likely a whole-brain phenomenon, with most of the brain probably benefiting from this state of decreased arousal. Recent advances in our understanding of some potential sleep functions, such as metabolite clearance and synaptic homeostasis, make it evident why the whole brain is likely impacted by sleep: All neurons have synapses, and all neurons produce waste metabolites. Sleep experiments in the fly Drosophila melanogaster suggest that diverse sleep functions appear to be conserved across all animals. Studies of brain activity during sleep in humans typically involve multidimensional data sets, such as those acquired by electroencephalograms (EEGs) or functional magnetic resonance imaging (fMRI), and these whole-brain read-outs often reveal important qualities of different sleep stages, such as changes in frequency dynamics or connectivity. Recently, various techniques have been developed that allow for the recording of neural activity simultaneously across multiple regions of the fly brain. These whole-brain-recording approaches will be important for better understanding sleep physiology and function, as they provide a more comprehensive view of neural dynamics during sleep and wake in a relevant model system. Here, we present a brief summary of some of the findings derived from sleep activity recording studies in sleeping Drosophila flies and discuss the value of electrophysiological versus calcium imaging techniques. Although these involve very different preparations, they both highlight the value of multidimensional data for studying sleep in this model system, like the use of both EEG and fMRI in humans. Full Article
imag How to start using Image Playground in iOS 18.2 to create funny selfies By appleinsider.com Published On :: Fri, 08 Nov 2024 21:00:21 +0000 Transform your iPhone 16 into a digital art studio with iOS 18.2's Image Playground, the latest tool for creating custom visuals with a few taps.Ninja the cat moves through the house unseenWith the release of iOS 18.2, Apple's Image Playground app offers users an accessible way to create custom digital images, sparking creative possibilities for iPhone owners. Part of Apple's expanding Apple Intelligence suite, Image Playground debuted in developer betas in late 2024.With each update, Apple has strived to make Image Playground more responsive and intuitive, aiming to provide a smoother user experience as the feature matures. In the second developer beta of iOS 18.2, notable improvements are already evident, particularly in rendering speed and the alignment between user prompts and generated images. Continue Reading on AppleInsider | Discuss on our Forums Full Article
imag iOS 18.2 could receive a full public release with Image Playground & ChatGPT on December 9 By appleinsider.com Published On :: Tue, 12 Nov 2024 21:09:20 +0000 iOS 18.2 with access to ChatGPT integrations, Image Playground, and Genmoji could finally roll out to the general public on December 9 based on a notice recently posted by a UK carrier.iOS 18.2 could receive a full public release on December 9.On Monday, Apple released the third developer beta of iOS 18.2. Along with the various changes and quality-of-life improvements, the software also contains an update for carrier-specific settings.The third developer beta contains an update for devices using the British carrier EE. The carrier settings shipped with iOS 18.1 and the second developer beta of iOS 18.2 had the version number 59.5.1, while iOS 18.2 developer beta 3 increased the EE carrier settings version to 60.5.2. Continue Reading on AppleInsider | Discuss on our Forums Full Article
imag Imagination and prayer By www.om.org Published On :: Mon, 29 Oct 2012 09:15:49 +0000 Young Mexicans are challenged to do their part in missions during a conference in August, in which OM participated. Full Article
imag Imagine the smiles on their faces By www.om.org Published On :: Tue, 25 Nov 2014 19:52:58 +0000 OM EAST offers a special start to the new school term for hundreds of children in Bosnia-Herzegovina. Full Article
imag New technique allows technicolor imaging of degenerative joint disease By www.psu.edu Published On :: Fri, 25 Oct 2024 14:39:41 -0400 Medical imaging is no longer in Kansas, Toto, as a team led by Penn State researchers brings traditional black and white diagnostic images of X-rays and traditional CT scans into technicolor. The researchers developed novel contrast agents that target two proteins implicated in osteoarthritis, a degenerative joint disease commonly characterized as wear-and-tear arthritis. Full Article
imag Berks LaunchBox announces seven new 'IMAGINE Your Business' grant recipients By www.psu.edu Published On :: Thu, 31 Oct 2024 09:52:40 -0400 The Berks LaunchBox recently announced seven recipients of the second round of the “IMAGINE Your Business” grants. Full Article
imag An Elementary Math Routine: Dot Image (Video) By blogs.edweek.org Published On :: Wed, 12 Jul 2017 00:00:00 +0000 A math specialist shares how she uses dots to allow students to see the connections between mathematical operations, like addition and multiplication. Full Article Elementaryschools
imag NASA Launches Power to Explore Essay Contest, Invites Students to Imagine Nuclear-Powered Moon Mission By www.gadgets360.com Published On :: Mon, 11 Nov 2024 15:56:02 +0530 NASA’s Power to Explore Challenge calls on U.S. students to submit ideas for moon missions powered by radioisotope systems. The contest encourages kindergarten through Year 12 students to envision a mission, detail objectives, and apply their unique “power” to achieve mission success. Entries are due by January 31, 2025, and grand prize winners will tour NASA’s Glenn Research Center, gaining insight into the technology and science of space exploration. Full Article
imag Baidu's New AI Text-to-Image Generator I-RAG and No-Code Platform Miaoda Reportedly Announced By www.gadgets360.com Published On :: Tue, 12 Nov 2024 15:41:28 +0530 Baidu, the Chinese tech giant, announced two new artificial intelligence (AI) platforms on Tuesday. The company introduced a text-to-image generator dubbed I-RAG and a no-code platform called Miaoda. The new AI platforms were showcased at the Baidu World Conference, the company’s annual event. Additionally, the company also plans to launch new AI-integrated smart glasses. These glasses will be equipped with a dedicated AI assistant. Full Article
imag Bayhealth Partners with Delaware Libraries to Support Dolly Parton’s Imagination Library By news.delaware.gov Published On :: Wed, 03 Feb 2021 19:28:49 +0000 All babies born at Bayhealth to receive first Imagination Library book WILMINGTON, Del.— Governor John Carney and the Delaware Division of Libraries announced on Wednesday that Bayhealth has partnered with Dover and Milford Public Libraries to ensure all babies born at Bayhealth Hospitals, as well as any eligible patients of Bayhealth Pediatrics in Milford, are […] Full Article Delaware Libraries Governor John Carney Office of the Governor governor Governor Carney literacy reading
imag The Mezzanine Gallery to Exhibit “Recycle, Repurpose…RE-IMAGINE” by Colleen Zufelt By news.delaware.gov Published On :: Tue, 01 Mar 2022 21:00:57 +0000 The Delaware Division of the Arts’ Mezzanine Gallery presents artist Colleen Zufelt’s exhibition, Recycle, Repurpose…RE-IMAGINE, showing March 4 through 25, 2022. Her exhibit will also be part of Art Loop Wilmington — the monthly self-guided tour of art in and around the city. Full Article Delaware Division of the Arts Department of State Kent County New Castle County Sussex County "Delaware Division of the Arts" artist arts Colleen Zufelt Delaware gallery Mezzanine Gallery
imag ICYMI: Dolly Parton in Delaware for the Imagination Library Statewide Celebration By news.delaware.gov Published On :: Tue, 10 May 2022 01:45:55 +0000 Since the public announcement of Dolly’s arrival in Delaware last week, more than 1,000 Delaware children have been signed up for the Imagination Library. As of last week, over 21,000 Delaware children are enrolled in the program. Full Article Delaware Libraries Governor John Carney Office of the Governor Dolly Parton's Imagination Library First Lady Tracey Quillen Carney governor Governor Carney libraries
imag DHSS Seeks Community Engagement as Agency Expands Project to Reimagine Service Delivery By news.delaware.gov Published On :: Mon, 10 Oct 2022 17:36:12 +0000 NEW CASTLE (Oct. 10, 2022) – As part of its strategic plan to make access to services easier for Delawareans across the state, the Department of Health and Social Services (DHSS) will begin a critical community engagement phase in which the public can weigh in on the kinds of changes they want to see. For […] Full Article Delaware Health and Social Services Governor John Carney News Office of the Governor community Division of State Service Centers Family Services Cabinet Council
imag El DHSS Busca Participación Comunitaria a Medida que Agencia Expande Proyecto para Reimaginar Prestación de Servicios By news.delaware.gov Published On :: Mon, 10 Oct 2022 17:58:28 +0000 NEW CASTLE (Oct. 10, 2022) – Como parte de su plan estratégico para facilitar el acceso a los servicios para los residentes de Delaware a través del estado, el Departamento de Salud y Servicios Sociales (DHSS) comenzará una fase crítica de participación comunitaria en la que el público puede opinar sobre los tipos de cambios […] Full Article Delaware Health and Social Services comunidad Consejo del Gabinete de Servicios Familiares Division de Centros de Servicios Estatales