Immunosuppression News and Research

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Immunosuppression involves an act that reduces the activation or efficacy of the immune system. Some portions of the immune system itself have immuno-suppressive effects on other parts of the immune system, and immunosuppression may occur as an adverse reaction to treatment of other conditions.

Immunosuppression in COVID-19 promotes emergence of multiple immune escape mutants

An interesting new study describes the emergence of several such variants from a chronically immunosuppressed COVID-19 patient, who remained infected for over 170 days before clearing the virus.

7 May 2021

SARS-CoV-2 infection prolongs viral shedding and lymphocyte loss in patients with cancer

Patients with cancer have a more challenging time with infections while undergoing treatment — placing them as high-risk for severe COVID-19 illness and death. However, how the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) interacts with cancer therapies remains poorly understood.

7 May 2021

Transplant recipients with COVID-19 may show lower cellular and antibody immune responses

Transplant patients are typically on chronic immunosuppression, making them automatically more vulnerable to infection with SARS-CoV-2, the agent responsible for the loss of over three million lives in the current COVID-19 pandemic. A new study discusses evidence for subnormal immune responses following COVID-19 in this population.

6 May 2021

Can control theory explain differences in virulence and transmission of SARS-CoV-2?

A new study discusses variations in viral pathogenicity and in transmission, which are responsible for asymptomatic infection and for superspreading events. The ability to understand this would open the way to understand how this virus behaves the way it does, in terms of its virulence, its spread, and its emergent variants of concern.

28 Apr 2021

SARS-CoV-2 antibody response robust in nursing home residents after Pfizer-BioNTech vaccine

However, with the waning of the immune response, it is not clear if these older people respond to the vaccine as well as younger individuals do. A recent study explored this question and found that though the antibody levels were somewhat lower in this group, they were still robust. This is a promising observation.

26 Apr 2021

Researchers discover molecule that provides dual protection against vascular inflammation

A multidisciplinary team of researchers from Duke-NUS Medical School and the Agency for Science, Technology and Research (A*STAR) in Singapore discovered a new mitochondrial peptide called MOCCI that plays an important role in regulating inflammation of blood vessel and immunity.

22 Apr 2021

Can biomaterials offer novel therapeutic strategies against COVID-19?

A team of scientists reviews the current and potential impact of the biomaterial sciences on the COVID-19 pandemic.

15 Apr 2021

UHN performed first double-lung transplant after COVID-19 in Canada

University Health Network has performed what is believed to be the first lung transplant in Canada on a patient whose lungs were irreparably damaged by COVID-19.

12 Apr 2021

Researchers evaluate new drug for spinal muscular atrophy in a broader spectrum of patients

The rarity of spinal muscular atrophy (SMA) means that promising new treatments may be tested in only a limited spectrum of patients before approval. Investigators evaluated a newly approved drug, onasemnogene abeparvovec, in a broader spectrum of patients in order to obtain expanded data on its side effects profile.

6 Apr 2021

Combined clinical and genomic data better predicts COVID-19 severity

The current COVID-19 outbreak is one of the worst pandemics in history and has claimed millions of lives across the globe, overwhelmed healthcare systems, and created unprecedented socio-economic ramifications.

28 Mar 2021

UB receives $1.5 million grant to develop new therapies for oral cancers

The University at Buffalo has received a $1.5 million grant from the United States Department of Defense to develop new therapies that help reduce chronic inflammation and immunosuppression in oral cancers.

25 Mar 2021

COVID vaccines have only 17% detectable antibodies against SARS-CoV-2 virus

When clinical trials were conducted to determine the immunogenicity -- the ability to elicit an immune response -- for the first two vaccines marshaled against SARS-CoV-2the virus that causes COVID-19, one group was not among those included: people who have received solid organ transplants and others (such as those with autoimmune disorders) who are immunocompromised.

25 Mar 2021

Study examines efficacy of Pfizer-BioNTech mRNA COVID-19 vaccine across demographic groups

A new study examines data from Israel's vaccination campaign to assess the efficacy of the Pfizer-BioNTech mRNA vaccine across different demographics.

19 Mar 2021

New bioink allows 3D-bioprinting of human tissues

Researchers at Lund University have designed a new bioink which allows small human-sized airways to be 3D-bioprinted with the help of patient cells for the first time.

17 Mar 2021

People with high BMI may now receive their COVID-19 vaccine in California

Now, California state allows individuals with one of ten comorbidities to get their COVID-19 jabs. This comes after obesity being tagged as COVID-19 vaccine eligibility.

16 Mar 2021

Scientists explore the negative effects of prenatal stress on offspring mental health

The link between psychological stress and physical health problems generally relates to a stress-induced immune response gone wild, with inflammation then causing damage to other systems in the body. It's a predictable cascade - except in pregnancy, research suggests.

16 Mar 2021

How likely is SARS-CoV-2 reinfection?

The coronavirus disease 2019 (COVID-19) pandemic has already caused over 117.6 million confirmed cases the world over. Yet, researchers debate the exact incidence of reinfection with the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), COVID-19’s causative pathogen.

10 Mar 2021

Studies reveal the promise of newly engineered bispecific antibodies against tumor cells

Three studies - one each in Science, Science Translational Medicine, and Science Immunology - reveal the promise of newly engineered bispecific antibodies, including by demonstrating their power against previously inaccessible tumor cell targets for the first time, in two cases.

2 Mar 2021

SARS-CoV-2 variants emerge during humoral immunity phase of acute COVID-19

A new preprint research paper posted to the bioRxiv server reports the rapid emergence of variants within an infected individual. The evolution of the virus within an infected host is not excluded by the close similarity between the consensus sequences of single-person SARS-CoV-2, since the number of viral copies is at its peak soon after infection occurs and before the host develops adaptive immunity.

23 Feb 2021

HIV-positive people with severe immunosuppression, APOE4 gene may have increased risk for dementia

People living with the human immunodeficiency virus (HIV) who have a history of severe immunosuppression and at least one copy of the Alzheimer's disease-related gene variant APOE4, might see a compounded adverse effect on the circuitry that impacts memory.

22 Feb 2021