Discover and read the best of Twitter Threads about #HLA

Most recents (8)

Le #cellule #Car-T “peptide-centriche” contro i #tumori solidi: in questo caso ha come #target i #frammenti proteici nelle cellule di #neuroblastoma. Studio di #Nature riassunto in questo thread un po' lungo ma spero interessante. 1/13
Le basi/1. Le terapie CAR-T si basano sull’ingegnerizzazione delle #cellule T (o #linfociti T) del sistema #immunitario del #paziente, che vengono “potenziate” per combattere il #tumore. 2/13
Le basi/2. Per farlo gli scienziati usano un #vettore #virale inattivato contenente un #gene in grado di far esprimere sulla superficie delle cellule T un #recettore chimerico (il recettore dell’antigene chimerico, #CAR, a cui la terapia deve il suo nome). 3/13
Read 13 tweets
A metal ion orients SARS-CoV-2 mRNA to ensure accurate 2′-O methylation of its first nucleotide
» doi.org/10.1038/s41467…
The #SARSCoV2 #coronavirus is able to utilize the changes in metal ion concentrations to disguise itself in the human host body thus evading immune responses. Image
Efficacy of #clarithromycin on #COVID19 pneumonia without oxygen administration; protocol for multicenter, open-label, randomized-controlled, 3-armed parallel group comparison, exploratory trial #CAMECOVID
» doi.org/10.1101/2021.0…
Japan Registry of Clinical Trials jRCTs071210011 Image
The influence of #HLA genotype on the severity of #COVID19 infection
» doi.org/10.1111/tan.14…
A genetic link has been discovered explaining why some people catch #Covid but don't get sick. The gene is found three times as often in people who are #asymptomatic. Image
Read 199 tweets
🔝5 Concerns about #SARSCoV2 #Biology: A Call to Pause, Deliberate, and Revise Policy─This review is intended both as a basic resource and to initiate an open and critical dialog about SARS-CoV-2 biology for an independent and public call to action. jjcouey.medium.com/5-concerns-abo…
Structural basis of ribosomal #frameshifting during translation of the #SARSCoV2 #RNA #genome
» doi.org/10.1126/scienc…
A unique feature of the SARS-CoV-2 genome controls protein synthesis and presents an "Achilles heel" of the virus. Image
Brainstem neuropathology in two cases of #COVID19: #SARSCoV2 trafficking between #brain and #lung
» doi.org/10.1007/s00415…
Neuropathologic evidence strongly suggests that the pathophysiology of COVID-19 related respiratory failure includes a neurogenic component. Image
Read 213 tweets
Reducing #COVID19 #Airborne #Transmission Risks on #PublicTransportation Buses
» doi.org/10.1101/2021.0…
Wearing of #facemasks reduced the overall particle count released into the bus by an average of 50%, the dispersion distance by several feet and #aerosol particles by 84.36%. Image
🔝#SARSCoV2 Infects Human Engineered Heart Tissues and Models COVID-19 Myocarditis
» doi.org/10.1016/j.jacb…
#COVID19 can kill heart muscle cells, interfere with contraction. Details of how #coronavirus infects #heart: models of tissue damage may help develop potential therapies. Image
High-content screening of coronavirus genes for innate immune suppression reveals enhanced potency of SARS-CoV-2 proteins
» doi.org/10.1101/2021.0…
196 protein products of seven coronaviruses: the genes encoded by #SARSCoV2 are generally more potent immune suppressors than others Image
Read 236 tweets
⚠️#Ocular #MRI Findings in Patients with Severe #COVID19: A Retrospective Multicenter Observational Study
» doi.org/10.1148/radiol…
All patients had nodules in the macular region, 8/9 (89%) had bilateral nodules, 2/9 (22%) had nodules outside the macular region. Screening needed. Image
⚠️🔝New-Onset #IgG #Autoantibodies in Hospitalized Patients with #COVID19
» doi.org/10.1101/2021.0…
An international team of researchers studying COVID-19 has made a startling and pivotal discovery: The virus appears to cause the body to make weapons to attack its own tissues. Image
⚠️🔝Patterns of myocardial injury in recovered troponin-positive COVID-19 patients assessed by cardiovascular magnetic resonance
» academic.oup.com/eurheartj/adva…
Damage to the heart found in more than half of #COVID19 patients discharged from hospital who show raised levels of troponin. Image
Read 235 tweets
Our article on the origin and health status of first-generation Africans from the Viceroyalty of New Spain is out now in @CurrentBiology! disq.us/t/3o8nra4 Here’s the #thread in case you can’t make the complete read:
These African individuals were first noted by @MezaAbigail and colleagues to be not Native Americans and found in a hospital which was dedicated to care exclusively for the indigenous population of the Viceroyalty of the #NewSpain
Here’s a look at the excavation site: (from: arqueologiamexicana.mx/mexico-antiguo…)
Read 10 tweets
1/ A continuation #tweetorial from my last one introducing human leukocyte antigen (#HLA) , the cell surface antigen...

Below, let's briefly review basics of #Luminex testing & "cross-matching."

What/who is Luminex?
2/ In this #tweetorial, we'll answer 3Qs that help us assess a #kidneytransplant recipient's immunological risk:

1. Does this recipient have #DSA* (against HLA-antigens) ?
2. Can the antibodies bind?
3. Can the antibodies activate complement?

*DSA: donor specific antibodies
3/ Q1: How do know if the recipient's serum contains DSA against HLA-antigens?

A1: #Luminex testing, a solid-phase (BEAD) based assay. To perform the test, take the recipient's serum and pipette it into multiple wells - each well has beads coated with #HLA antigens...
Read 12 tweets
1/ A short #tweetorial introducing human leukocyte antigen (HLA) and typing...an important and often confusing topic in #transplantation #kidneytransplant

#FOAMed @MedTweetorials

What is an "HLA"?
2/

HLAs = cell surface proteins encoded by highly polymorphic major histocompatibility complex (MHC) genes on Ch 6 🧬

In #transplantation, HLA proteins are #polymorphic antigens ➡️ alloreactive trigger for the immune response ➡️ can ultimately lead to organ #rejection ☠️
3/ The 2 primary classes of MHC molecules are 1⃣ and 2⃣.

Class 1⃣ MHC are found on the cell surface of ALL nucleated cells + platelets. Their role is to present intracelleular peptide fragments to CD8 #Tcells
Read 8 tweets

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