Lymphopenia News and Research

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Lymphopenia is a condition in which there is a lower-than-normal number of lymphocytes (a type of white blood cell) in the blood. Also called lymphocytic leukopenia and lymphocytopenia.

Leaky gut and microbial dysbiosis could contribute to cytokine storm in severely ill COVID-19 cases

The gut is a well-established route of infection and target for viral damage by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the causative agent for COVID-19. This is supported by the clinical observation that about half of COVID-19 patients exhibit gastrointestinal (GI) symptoms.

8 Apr 2021

Study suggests T-cells don't determine survival in severe COVID-19

In the study, which appeared on the pre-print server medRxiv, the team found that when the monkeys were reinfected, the T cell-depleted animals showed anamnestic immune responses, the enhanced reaction of the body's immune system to an antigen that is related to an antigen previously encountered.

6 Apr 2021

Researchers explore difference in reactions to SARS-CoV-2 infection between children and adults

The COVID-19 pandemic has claimed over 2.67 million lives in less than a year and a half. However, it is uncommon in children, with less than 2% of the cases being in individuals below the age of 19. Most of these are of mild severity, with the clinical features of severe COVID-19 being rare in this age group.

17 Mar 2021

COVID-19 is more difficult to diagnose in children and adolescents, finds study

The ongoing pandemic of coronavirus disease 2019 (COVID-19), caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has spread to over 192 countries and territories, causing an enormous loss of lives and economic devastation.

17 Mar 2021

Researchers identify new biomarkers associated with severity of COVID-19

A team of researchers from the CHUM Research Centre has identified new biomarkers associated with the severity of COVID-19 in infected patients.

8 Mar 2021

Study identifies immune profile of people with severe COVID-19

A team of researchers at Georgetown University Medical Center, USA, investigated how SARS-CoV-2 affects the immune system’s response during and after infection and contributes to the severity of COVID-19.

22 Feb 2021

What are the changes in the physical phenotype of blood cells in COVID-19?

While primarily a respiratory illness, there are distinctive alterations in the type and number of blood cells in COVID-19. A new study by a team of researchers in Germany describes the nature of these changes.

16 Feb 2021

Hematological findings in Amazonian patients with COVID-19

To discriminate between patients with severe and non-severe COVID-19 quickly, researchers from Peru looked for prognostic signatures in the blood samples of COVID-19 patients. Virgilio E. Failoc-Rojas et al. examined laboratory results and clinical prognosis of COVID-19 patients from a hospital in the Peruvian Amazon.

3 Feb 2021

Insight into role of aging in response to SARS-CoV-2 infection

Researchers at the University of California, Irvine set out to determine the differences between young people and older adults regarding their host responses against SARS-CoV-2. The team revealed that independent of disease severity, COVID-19 was linked to a significant shift in plasma inflammatory factors. The research is posted to the pre-print server medRxiv*.

3 Feb 2021

SARS-CoV-2-specific T cells are key players in decreasing COVID-19 mortality

A recent US study, currently available on medRxiv preprint server, supports a beneficial rather than immunopathologic role for effector T-cells during serious infections with the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) –

31 Jan 2021

High factor V levels linked to lymphopenia and weakened immunity in severe COVID-19

A new study suggests that factor V, a coagulation factor, is upregulated in a range of white blood cells in severe COVID-19. This increase is linked to the observed coagulopathy, lymphopenia and suppression of adaptive immunity in such patients.

21 Jan 2021

SARS-CoV-2 RNA in blood serum could predict COVID-19 mortality

Researchers find that the presence of SARS-CoV-2's genetic material in the serum of positive patients could be a sturdy biomarker for predicting COVID-19-related mortality.

18 Jan 2021

HIV alters SARS-CoV-2 immune response without affecting COVID-19 symptoms or outcomes

In a preprint paper published on the medRxiv server, a team of researchers from various institutions in South Africa, the UK, and Europe discuss how they determined the impact of HIV on the COVID-19 immune response in KwaZulu-Natal, South Africa, which is an area with very high HIV prevalence.

26 Nov 2020

SARS-CoV-2-specific IgM / IgG responses accurately predict COVID-19 outcome

Researchers from the Huazhong University of Science and Technology and Shanghai Jiao Tong University, China, recently built a proteome microarray with 20 out of the 28 predicted SARS-CoV-2 proteins to help understand IgM/IgG responses specific to SARS-CoV-2.

17 Nov 2020

Preliminary analysis of photon therapy treatment group 1 shows no significant differences between arms

A preliminary analysis of photon therapy treatment group 1 from the phase II NRG Oncology clinical trial NRG-BN001 indicates that there is no statistically significant overall survival (OS) or toxicity differences between dose-intensification radiation therapy (DI-RT) using intensity-modulated radiation therapy (IMRT) and standard-dose radiation therapy (SD-RT) with temozolomide treatments for patients with newly diagnosed glioblastoma (GBM).

27 Oct 2020

Characterization of prognostic markers to predict COVID-19 severity

A team of scientists from the United Kingdom has revealed that markers of endothelial cell injury are associated with severe and fatal outcome of coronavirus disease 2019 (COVID-19). The study is currently available on the medRxiv* preprint server.

14 Oct 2020

Pathways contributing to hypercoagulability in severe SARS‐CoV‐2 patients

In a study by researchers explored the possible mechanisms of the clotting disorder, focusing on the role of hypoxia-related activation of coagulation factors; cytokine storm, activation of neutrophils, and the release of neutrophil extracellular traps.

11 Oct 2020

SARS-CoV-2 infects monocytes and macrophages, without cytopathic effect

A team of researchers from Aix-Marseille Univ, IHU-Méditerranée Infection, Institut Paoli Calmettes and Laboratoire d’Immunologie, Marseille, France, conducted experiments to determine if SARS-CoV-2 can affect the myeloid compartment or infect monocytes and macrophages.

20 Sep 2020

LOX-1-immature neutrophils may help identify COVID-19 patients at risk of thrombosis complication

To predict severe outcome in COVID-19 patients, innate immune cellular signals are analyzed, identifying two novel neutrophil subsets: LOX-1- and CD123-expressing CD10-CD64+. Thromboembolic events correlated with high LOX-1 immature neutrophils – a potential prognostic signature.

17 Sep 2020

D-dimer - A sensitive novel biomarker of COVID-19 mortality

Now, a new study published on the preprint server medRxiv* reports the use of D-dimer in predicting the risk of mortality in COVID-19.

7 Sep 2020