The aim of this study was to validate a previously developed deep learning model in 5 independent clinical trials. The predictive performance of this model was compared with the international prognostic index (IPI) and 2 models incorporating radiomic PET/CT features (clinical PET and PET models). Methods: In total, 1,132 diffuse large B-cell lymphoma patients were included: 296 for training and 836 for external validation. The primary outcome was 2-y time to progression. The deep learning model was trained on maximum-intensity projections from PET/CT scans. The clinical PET model included metabolic tumor volume, maximum distance from the bulkiest lesion to another lesion, SUV_peak, age, and performance status. The PET model included metabolic tumor volume, maximum distance from the bulkiest lesion to another lesion, and SUV_peak. Model performance was assessed using the area under the curve (AUC) and Kaplan–Meier curves. Results: The IPI yielded an AUC of 0.60 on all external data. The deep learning model yielded a significantly higher AUC of 0.66 (P < 0.01). For each individual clinical trial, the model was consistently better than IPI. Radiomic model AUCs remained higher for all clinical trials. The deep learning and clinical PET models showed equivalent performance (AUC, 0.69; P > 0.05). The PET model yielded the highest AUC of all models (AUC, 0.71; P < 0.05). Conclusion: The deep learning model predicted outcome in all trials with a higher performance than IPI and better survival curve separation. This model can predict treatment outcome in diffuse large B-cell lymphoma without tumor delineation but at the cost of a lower prognostic performance than with radiomics.

Simplified methods of acquisition and quantification would facilitate the use of synaptic density imaging in multicenter and longitudinal studies of Alzheimer disease (AD). We validated a simplified tissue-to-reference ratio method using SUV ratios (SUVRs) for estimating synaptic density with [¹¹C]UCB-J PET. Methods: Participants included 31 older adults with AD and 16 with normal cognition. The distribution volume ratio (DVR) using simplified reference tissue model 2 was compared with SUVR at short scan windows using a whole-cerebellum reference region. Results: Synaptic density was reduced in AD participants using DVR or SUVR. SUVR using later scan windows (60–90 or 70–90 min) was minimally biased, with the strongest correlation with DVR. Effect sizes using SUVR at these late time windows were minimally reduced compared with effect sizes with DVR. Conclusion: A simplified tissue-to-reference method may be useful for multicenter and longitudinal studies seeking to measure synaptic density in AD.

Chronic hypertension leads to injury and fibrosis in major organs. Fibroblast activation protein (FAP) is one of key molecules in tissue fibrosis, and ⁶⁸Ga-labeled FAP inhibitor-46 (FAPI46) PET is a recently developed method for evaluating FAP. The aim of this study was to evaluate FAP expression and fibrosis in a hypertension model and to test the feasibility of ⁶⁸Ga-FAPI46 PET in hypertension. Methods: Hypertension was induced in mice by angiotensin II infusion for 4 wk. ⁶⁸Ga-FAPI46 biodistribution studies and PET scanning were conducted at 1, 2, and 4 wk after hypertension modeling, and uptake in the major organs was measured. The FAP expression and fibrosis formation of the heart and kidney tissues were analyzed and compared with ⁶⁸Ga-FAPI46 uptake. Subgroups of the hypertension model underwent angiotensin receptor blocker administration and high-dose FAPI46 blocking, for comparison. As a preliminary human study, ⁶⁸Ga-FAPI46 PET images of lung cancer patients were analyzed and compared between hypertension and control groups. Results: Uptake of ⁶⁸Ga-FAPI46 in the heart and kidneys was significantly higher in the hypertension group than in the sham group as early as week 1 and decreased after week 2. The uptake was specifically blocked in the high-dose blocking study. Immunohistochemistry also revealed FAP expression in both heart and kidney tissues. However, overt fibrosis was observed in the heart, whereas it was absent from the kidneys. The angiotensin receptor blocker–treated group showed lower uptake in the heart and kidneys than did the hypertension group. In the pilot human study, renal uptake of ⁶⁸Ga-FAPI46 significantly differed between the hypertension and control groups. Conclusion: In hypertension, FAP expression is increased in the heart and kidneys from the early phases and decreases over time. FAP expression appears to represent fibrosis activity preceding or underlying fibrotic tissue formation. ⁶⁸Ga-FAPI46 PET has potential as an effective imaging method for evaluating FAP expression in progressive fibrosis by hypertension.

BACKGROUND AND PURPOSE:

Preoperative assessment of meningioma consistency is beneficial for optimizing surgical strategy and prognosis of patients. We aim to develop a noninvasive prediction model for meningioma consistency utilizing MR elastography and DTI.

Here, we highlight the case of a 31-yr-old man who had clinical features of primary hypertrophic osteoarthropathy (PHOAR) and harbored a homozygous variant (c.38C > A, p.Ala13Glu) in the HPGD gene, as indicated by whole-exome sequencing (WES). This variant has been previously classified by our laboratory as a variant of uncertain significance (VUS). However, another patient with the same phenotype and the same homozygous variant in HPGD was subsequently reported. In reassessing the variant, the absence of this variant in the gnomAD population database, supporting computational predictions, observation in homozygosity in two probands, and specificity of the phenotype for HPGD, all provide sufficient evidence to reclassify the HPGD c.38C > A, p.Ala13Glu variant as likely pathogenic.

Affibody molecules are small (6-kDa) affinity proteins generated by directed evolution for specific binding to various target molecules. The first step in this workflow involves the generation of an affibody library, which can then be used for biopanning using multiple display methods. This protocol describes selection from affibody libraries using display on Staphylococcus carnosus. Display of affibodies on staphylococci is very efficient and straightforward because of the single cell membrane and the use of a construct with a constitutive promoter. The workflow involves display of affibody libraries on the surface of S. carnosus cells, followed by screening and selection of binders using fluorescence-activated cell sorting (FACS). The transformation of DNA libraries into S. carnosus is less efficient and more complicated than for Escherichia coli. Because of this, staphylococcal display is suitable for affinity maturation or other protein-engineering efforts that are not dependent on very high diversity, and thus magnetic-activated cell sorting (MACS) is often not required before FACS. However, MACS is an option, and MACS procedures used for E. coli can easily be adapted for use in S. carnosus if needed.

Affibody molecules are small (6-kDa) affinity proteins generated by directed evolution for specific binding to various target molecules. The first step in this workflow involves the generation of an affibody library, which can then be used for selection via multiple display methods. This protocol describes selection from affibody libraries by Escherichia coli cell surface display. With this method, high-diversity libraries of 10¹¹ can be displayed on the cell surface. The method involves two steps for selection of binders from high-diversity libraries: magnetic-activated cell sorting (MACS) and fluorescence-activated cell sorting (FACS). MACS is used first to enrich the library in target-binding clones and to decrease diversity to a size that can be effectively screened and sorted in the flow cytometer in a reasonable time (typically <10⁷ cells). The protocol is based on methodology using an AIDA-I autotransporter for display on the outer membrane, but the general procedures can also be adjusted and used for other types of autotransporters or alternative E. coli display methods.

Affibody molecules are small (6-kDa) affinity proteins generated by directed evolution for specific binding to various target molecules. The first step in this workflow involves the generation of an affibody library. This is then followed by amplification of the library, which can then be used for biopanning using multiple methods. This protocol describes amplification of affibody libraries, followed by biopanning using phage display and analysis of the selection output. The general procedure is mainly for selection of first-generation affibody molecules from large naive (unbiased) libraries, typically yielding affibody hits with affinities in the low nanomolar range. For selection from affinity maturation libraries with the aim of isolating variants of even higher affinities, the procedure is similar, but parameters such as target concentration and washing are adjusted to achieve the proper stringency.

Sleep is a fundamental feature of life for virtually all multicellular animals, but many questions remain about how sleep is regulated and what biological functions it plays. Substantial headway has been made in the study of both circadian rhythms and sleep in the fruit fly Drosophila melanogaster, much of it through studies of individual fly activity using beam break counts from Drosophila activity monitors (DAMs). The number of laboratories worldwide studying sleep in Drosophila has grown from only a few 20 years ago to hundreds today. The utility of these studies is limited by the quality of the metrics that can be extracted from the data. Many software options exist to help analyze DAM data; however, these are often expensive or have significant limitations. Therefore, we describe here a method for analyzing DAM-based data using the sleep and circadian analysis MATLAB program (SCAMP). This user-friendly software has an advantage of combining several analyses of both sleep and circadian rhythms in one package and produces graphical outputs as well as spreadsheets of the outputs for further statistical analysis. The version of SCAMP described here is also the first published software package that can analyze data from multibeam DAM5Ms, enabling determination of positional preference over time.

The positional preference of an animal can be very informative regarding the choices it makes about how to interact with its environment. The fruit fly Drosophila melanogaster has been used as a robust system for examining neurobiological mechanisms underlying behavior. Fruit fly positional preference can be gathered from TriKinetics Drosophila activity monitors (DAMs), which contain four infrared beams, allowing for tracking the position of individual flies along the length of a tube. Here, we describe a method for using DAM5Ms to examine food preference. Specifically, we show an example in which circadian changes in food preference are compared between different Drosophila species. More information about the evolution of behavior can be gathered by measuring feeding preference relative to time of day. Noni, fruit from Morinda citrifolia, contains octanoic acid, a chemical toxic to many species of Drosophila. D. melanogaster and D. simulans, both food generalists, show high sensitivity to octanoic acid, whereas D. sechellia, a specialist, can tolerate high concentrations. When two different food substrates are provided at each end of a tube, food preference can be inferred at various times of the day, using the sleep and circadian analysis MATLAB program (SCAMP) to extract and analyze positional data from DAM5Ms. Data gathered from these analyses can be used to compare avoidance or attraction to nutrients, tastants, or odors between species and genotypes or after specific different treatments. Additionally, such data can be examined as a function of time of day.

BackgroundCOVID-19 pandemic restrictions may have influenced behaviours related to weight.AimTo describe patterns of weight change among adults living in England with type 2 diabetes (T2D) and/or hypertension during the pandemic.Design and settingAn observational cohort study using the routinely collected health data of approximately 40% of adults living in England, accessed through the OpenSAFELY service inside TPP.MethodClinical and sociodemographic characteristics associated with rapid weight gain (>0.5 kg/m2/year) were investigated using multivariable logistic regression.ResultsData were extracted on adults with T2D (n = 1 231 455, 43.9% female, and 76.0% White British) or hypertension (n = 3 558 405, 49.7% female, and 84.3% White British). Adults with T2D lost weight overall (median δ = −0.1 kg/m2/year [interquartile range {IQR} −0.7–0.4]). However, rapid weight gain was common (20.7%) and associated with the following: sex (male versus female: adjusted odds ratio [aOR] 0.78 [95% confidence interval {CI} = 0.77 to 0.79]); age (older age reduced odds, for example, aged 60–69 years versus 18–29 years: aOR 0.66 [95% CI = 0.61 to 0.71]); deprivation (least deprived Index of Multiple Deprivation [IMD] quintile versus most deprived IMD quintile: aOR 0.87 [95% CI = 0.85 to 0.89]); White ethnicity (Black versus White: aOR 0.95 [95% CI = 0.92 to 0.98]); mental health conditions (for example, depression: aOR 1.13 [95% CI = 1.12 to 1.15]); and diabetes treatment (non-insulin treatment versus no pharmacological treatment: aOR 0.68 [95% CI = 0.67 to 0.69]). Adults with hypertension maintained stable weight overall (median δ = 0.0 kg/m2/year [IQR −0.6–0.5]); however, rapid weight gain was common (24.7%) and associated with similar characteristics as in T2D.ConclusionAmong adults living in England with T2D and/or hypertension, rapid pandemic weight gain was more common among females, younger adults, those living in more deprived areas, and those with mental health conditions.

Enshrouded has received what developers Keen Games are calling the survival game's "most sizable" update yet, sizable being an appropriate word for mountains. Expect a new playable area, the Alabaneve Summits, with its own enemies, resources, non-threatening wildlife and quests. The maximum character level has risen to 35! There are new townsfolk to find and place in your poorly built houses! You can tame animals, and make them live in poorly built houses too! You can get hypothermia!

Read more

Steam's built-in game recording feature has been usable in beta since the summer, but it has now been properly launched for every user, following a client update to Steam yesterday. It's basically another method of capturing funny ragdoll glitches and posting them on the "lol-games-are-dumb" channel of your friend's Discord. Or for posting that flukey knife throw in Call Of Duty to Twitter, as if you really meant to kill the man from across the map all along. Or saving a clip for your personal records, like the footage of that time you yeeted an innocent citizen off the 50-foot wall of a castle town in Dragon's Dogma 2. We all do that, right? Right?

Read more

Many people enjoy the experience of using AIs like ChatGPT or voice assistants like Alexa to find out information, but it turns out doing so makes it less likely you will spot inaccurate information

Certain strains of E. coli are capable of causing severe disease, by rapidly spreading through the human digestive system, wreaking havoc throughout the bloodstream, and eventually damaging the delicate kidneys. That's the situation right now during a large outbreak in Alberta, with hundreds of children now affected.

Every stock trader should consider a virtual private network to safeguard their trading, according to tech guru Kurt "CyberGuy" Knutsson.

NASA reconnected with Voyager 1, which is located nearly 15 billion miles away from Earth, after a brief pause that triggered the spacecraft's fault protection system.

They fight invaders, clear debris and tend neural connections, but sometimes microglia go rogue. Preventing this malfunction may offer new treatments for brain conditions including Alzheimer's

New studies suggest smoke from western megafires may be damaging bird health and leading to strange behavior

More than half of patients with asthma in the UK are “potentially overusing” short-acting β2-agonists, according to research.

This paper begins with a look at both optimization modeling and discrete-event simulation modeling, and explores how they can most effectively work together to create additional analytic value. It then considers two examples of a combined optimization and simulation approach and discusses the resulting benefits.

This paper provides an example that shows you how to use multiple RANDOM statements in PROC NLMIXED to fit nested nonlinear mixed models, and it provides details about the computation that is involved in fitting these models.

The quest for realism in Thai drama The Empress of Ayodhaya went too far when a cat was reportedly drugged in a poisoning scene. In episode five of the show, the character Indravedi (Fern Nopjira Lerkkajornnamkul) suspects her drink has been drugged, so she asks nanny Thongdee (Ja Molywon Phantara) to test it out on the black feline. The cat can be seen convulsing and retching, and the camera moves to show Indravedi looking concerned, while Thongdee declares that it is dead. The scene caused public outrage with fears that the cat had actually been killed, and calls to ban the period drama were trending on X. On Nov 7, a now-deleted X account reportedly belonging to Ja posted: "The cat didn't actually die. We put it under anaesthesia, but while filming, the cat retched and seized." She and Fern initially thought the cat had actually died while filming and their faces "turned pale", she added.

Mar 4, 2024

UCLA Law School Professor Kimberly Clausing gives the Biden Administration high praise for its climate policies in the latest episode of “Environmental Insights: Discussions on Policy and Practice from the Harvard Environmental Economics Program.” The podcast is produced by the Harvard Environmental Economics Program.

Get mortgage help. This is why. MakingHomeAffordable.gov :60

All eyes are on Michigan as Donald Trump and Kamala Harris battle over undecided voters in the crucial swing state, including many of the state’s 200,000 Arab American and Muslim voters who reject both the Republican and Democratic parties’ stance on Israel and Palestine. We speak to Dearborn, Michigan’s Lebanese American Mayor Abdullah Hammoud, who is the first Arab and Muslim mayor of the city, about many of his constituents’ loss of support for the Democratic Party and how the Arab American vote could impact the presidential election. Hammoud, like many Dearborn residents, has lost extended family to Israel’s attacks on Lebanon, and describes the climate in the city as “a blanket of grief.” Having called for a ceasefire and arms embargo on Israel, he refused to meet with Trump last week, but has also declined to endorse Harris. Hammoud calls on voters to not sit out the election entirely, but to “vote their moral conscience, and says the citizens of Dearborn are “willing to put people over party, first and foremost.”

Researchers find that medication abortion provided at home with a Zoom or text link to a medical provider is extremely safe and effective

The housing secretary will decide if plans for 8,400 homes near Sittingbourne can go ahead.

NYC emergency officials have begun using drones for the first time as a weather warning system.

Employees must stick to official channels to make sure their messages are fully retrievable.

Developers and Sport England disagree over the risk from cricket balls to future residents.

IWMI provides data that will inform response and relief efforts to Super Cyclone Amphan.

The post Using maps to save lives when a super cyclone strikes first appeared on International Water Management Institute (IWMI).

Pancreatic incidentaloma is a lesion in the pancreas that is detected incidentally during the imaging scans done for other conditions. h2Liquid

Discover how IWMI researchers are using climate-smart agriculture to combat low crop yields in the Global South.

The post Severe summer weather ruins crops in Asia and Africa causing vegetable prices to skyrocket first appeared on International Water Management Institute (IWMI).

Researchers have introduced an innovative statistical tool enhancing the identification of disease-causing genetic variants. This tool combines information

Erectile dysfunction (ED) is a condition that affects millions of men throughout the world. It can occur at any age and have an impact on the quality of someone's life.

The World Health Organization (WHO) released a new study identifying 17 endemic pathogens in urgent need of vaccines (!--ref1--). The study published

New AARP Sex Survey Reveals Single Adults Acting Like Teenagers and Not Using Protection

A novel, disease-modifying therapy or treatment for Alzheimer's disease that may involve a whole blood transfusion effectively reduces amyloid plaque

The cost of purchasing the opioid antidote naloxone is out of reach for many uninsured Americans. This may keep the treatment from saving more people

Cleaning your carpets is one of the challenging tasks that you could take on. With that said the job usually depends on one’s understanding and more so practice of doing carpet cleaning. Incase if your carpet has lots of stains...

A very few century in the past seamen were the first person to possess celeb wrist tats. Several mariners were superstitious as well as sea-loving movie star for their hand showed its northern border superstar which was intended to...

Before we start, let’s have a brief introduction on HTML5 framework. A HTML5 mobile application is a web page or series of web pages...

In the edge of high technology, it is essential to integrate telecom solutions and platforms with CSPs. It can help operators and as well as subscribers too. Billing platform is only the medium among...

Generic Latisse Eye Drops are also known as Bimatoprost Ophthalmic Solution in generic terms. The solutions is used for the treatment of Hypotrichosis of the eyeslashes. In this condition a person...

Industrial residues is misplaced local resources, the best way of handling is to turn them into renewable resources. For example, the industrial residues can be used for the preparing cement raw material and can be used as concrete...