LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 12

Search options

  1. Article: INDOLEAMINE-2,3-DIOXYGENASE GENE EXPRESSION LEVELS IN RESPONSE TO CHRONIC HEPATITIS B VIRUS INFECTION IN ZARIA, NIGERIA.

    Ahmad, Abdurrahman El-Fulaty / Bakari, Adamu Girei / Musa, Bolanle Olufunke Priscilla / Mustapha, Shattima Kagu / Yusuf, Bello Jamoh / Abdullahi, Idris Nasir / Tahir, Mohammed Ibrahim / Afolaranmi, Tolulope Olumide / Hawkins, Claudia / Sagay, Atiene Solomon / Muktar, Haruna Mohammed / Usman, Yahaya / Anka, Abubakar Umar / Olayinka, Adebola Tolulope

    Nigerian journal of immunology

    2023  Volume 4, Issue 1

    Language English
    Publishing date 2023-05-11
    Publishing country Nigeria
    Document type Journal Article
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Features and roles of T helper 22 cells in immunological diseases and malignancies.

    Hossein-Khannazer, Nikoo / Zian, Zeineb / Bakkach, Joaira / Kamali, Ali N / Hosseinzadeh, Ramin / Anka, Abubakar Umar / Yazdani, Reza / Azizi, Gholamreza

    Scandinavian journal of immunology

    2021  Volume 93, Issue 5, Page(s) e13030

    Abstract: T helper 22 (Th22) cell populations are a newly identified subset of ... ...

    Abstract T helper 22 (Th22) cell populations are a newly identified subset of CD4
    MeSH term(s) Autoimmune Diseases/immunology ; Autoimmune Diseases/pathology ; Humans ; Hypersensitivity/immunology ; Hypersensitivity/pathology ; Inflammation/immunology ; Inflammation/pathology ; Interleukins/immunology ; Lymphocyte Subsets/immunology ; Neoplasms/immunology ; Neoplasms/pathology ; T-Lymphocytes, Helper-Inducer/immunology ; Interleukin-22
    Chemical Substances Interleukins
    Language English
    Publishing date 2021-02-22
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 120476-2
    ISSN 1365-3083 ; 0300-9475
    ISSN (online) 1365-3083
    ISSN 0300-9475
    DOI 10.1111/sji.13030
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Interleukin-6 cytokine: An overview of the immune regulation, immune dysregulation, and therapeutic approach.

    Aliyu, Mansur / Zohora, Fatema Tuz / Anka, Abubakar Umar / Ali, Kashif / Maleknia, Shayan / Saffarioun, Mohammad / Azizi, Gholamreza

    International immunopharmacology

    2022  Volume 111, Page(s) 109130

    Abstract: Several studies have shown that interleukin 6 (IL-6) is a multifunctional cytokine with both pro-inflammatory and anti-inflammatory activity, depending on the immune response context. Macrophages are among several cells that secrete IL-6, which they ... ...

    Abstract Several studies have shown that interleukin 6 (IL-6) is a multifunctional cytokine with both pro-inflammatory and anti-inflammatory activity, depending on the immune response context. Macrophages are among several cells that secrete IL-6, which they express upon activation by antigens, subsequently inducing fever and production of acute-phase proteins from the liver. Moreover, IL-6 induces the final maturation of B cells into memory B cells and plasma cells as well as an adaptive role for short-term energy allocation. Activation of IL-6 receptors results in the intracellular activation of the JAK/STAT pathway with resultant production of inflammatory cytokines. Several mechanisms-controlled IL-6 expression, but aberrant production was shown to be crucial in the pathogenesis of many diseases, which include autoimmune and chronic inflammatory diseases. IL-6 in combination with transforming growth factor β (TGF-β) induced differentiation of naïve T cells to Th17 cells, which is the cornerstone in autoimmune diseases. Recently, IL-6 secretion was shown to form the backbone of hypercytokinemia seen in the Coronavirus disease 2019 (COVID-19)-associated hyperinflammation and multiorgan failure. There are two classes of approved IL-6 inhibitors: anti-IL-6 receptor monoclonal antibodies (e.g., tocilizumab) and anti-IL-6 monoclonal antibodies (i.e., siltuximab). These drugs have been evaluated in patients with rheumatoid arthritis, juvenile idiopathic arthritis, cytokine release syndrome, and COVID-19 who have systemic inflammation. JAK/STAT pathway blockers were also successfully used in dampening IL-6 signal transduction. A better understanding of different mechanisms that modulate IL-6 expression will provide the much-needed solution with excellent safety and efficacy profiles for the treatment of autoimmune and inflammatory diseases in which IL-6 derives their pathogenesis.
    MeSH term(s) Antibodies, Monoclonal/therapeutic use ; COVID-19/drug therapy ; Cytokines/metabolism ; Humans ; Interleukin-6/metabolism ; Janus Kinases/metabolism ; Receptors, Interleukin-6 ; STAT Transcription Factors/metabolism ; Signal Transduction
    Chemical Substances Antibodies, Monoclonal ; Cytokines ; Interleukin-6 ; Receptors, Interleukin-6 ; STAT Transcription Factors ; Janus Kinases (EC 2.7.10.2)
    Language English
    Publishing date 2022-08-12
    Publishing country Netherlands
    Document type Journal Article ; Review
    ZDB-ID 2043785-7
    ISSN 1878-1705 ; 1567-5769
    ISSN (online) 1878-1705
    ISSN 1567-5769
    DOI 10.1016/j.intimp.2022.109130
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Coronavirus disease 2019 (COVID-19): An overview of the immunopathology, serological diagnosis and management.

    Anka, Abubakar Umar / Tahir, Mohammed Ibrahim / Abubakar, Sharafudeen Dahiru / Alsabbagh, Mohamed / Zian, Zeineb / Hamedifar, Haleh / Sabzevari, Araz / Azizi, Gholamreza

    Scandinavian journal of immunology

    2020  Volume 93, Issue 4, Page(s) e12998

    Abstract: SARS-CoV-2 is a novel human coronavirus responsible for the Coronavirus disease 2019 (COVID-19) pandemic. Pneumonia and acute respiratory distress syndrome are the major complications of COVID-19. SARS-CoV-2 infection can activate innate and adaptive ... ...

    Abstract SARS-CoV-2 is a novel human coronavirus responsible for the Coronavirus disease 2019 (COVID-19) pandemic. Pneumonia and acute respiratory distress syndrome are the major complications of COVID-19. SARS-CoV-2 infection can activate innate and adaptive immune responses and result in massive inflammatory responses later in the disease. These uncontrolled inflammatory responses may lead to local and systemic tissue damage. In patients with severe COVID-19, eosinopenia and lymphopenia with a severe reduction in the frequency of CD4+ and CD8+ T cells, B cells and natural killer (NK) cells are a common feature. COVID-19 severity hinges on the development of cytokine storm characterized by elevated serum levels of pro-inflammatory cytokines. Moreover, IgG-, IgM- and IgA-specific antibodies against SARS-CoV-2 can be detected in most patients, along with the viral RNA, forming the basis for assays that aid in patient diagnosis. Elucidating the immunopathological outcomes due to COVID-19 could provide potential targets for immunotherapy and are important for choosing the best clinical management by consultants. Currently, along with standard supportive care, therapeutic approaches to COVID-19 treatment involve the use of antiviral agents that interfere with the SARS-CoV-2 lifecycle to prevent further viral replication and utilizing immunomodulators to dampen the immune system in order to prevent cytokine storm and tissue damage. While current therapeutic options vary in efficacy, there are several molecules that were either shown to be effective against other viruses such as HIV or show promise in vitro that could be added to the growing arsenal of agents used to control COVID-19 severity and spread.
    MeSH term(s) Antiviral Agents/therapeutic use ; COVID-19/diagnosis ; COVID-19/drug therapy ; COVID-19/immunology ; COVID-19/therapy ; COVID-19 Serological Testing ; Cytokine Release Syndrome ; Humans ; Immunologic Factors/therapeutic use ; Lymphopenia ; Pandemics ; Respiratory Distress Syndrome ; SARS-CoV-2/physiology ; Virus Replication
    Chemical Substances Antiviral Agents ; Immunologic Factors
    Keywords covid19
    Language English
    Publishing date 2020-12-03
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 120476-2
    ISSN 1365-3083 ; 0300-9475
    ISSN (online) 1365-3083
    ISSN 0300-9475
    DOI 10.1111/sji.12998
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article: Biological and clinical significance of T helper 17 cell deficiency: insight into monogenic defects.

    Anka, A U / Abdullahi, I N / Umar, K / Bello, Z M / Mohammed, M / Gachpaz Sarkhiz, S / Abubakar, N K / Alsabbagh, M / Kamali, A N / Azizi, G

    European annals of allergy and clinical immunology

    2020  Volume 53, Issue 4, Page(s) 149–160

    Abstract: Summary: T helper 17 (Th17) are a ... ...

    Abstract Summary: T helper 17 (Th17) are a CD4
    MeSH term(s) Autoantibodies ; Candidiasis, Chronic Mucocutaneous/genetics ; Cytokines ; Guanine Nucleotide Exchange Factors ; Humans ; Mutation ; Receptors, Interleukin-17 ; STAT1 Transcription Factor ; STAT3 Transcription Factor ; Th17 Cells
    Chemical Substances Autoantibodies ; Cytokines ; DOCK8 protein, human ; Guanine Nucleotide Exchange Factors ; Receptors, Interleukin-17 ; STAT1 Transcription Factor ; STAT3 Transcription Factor
    Language English
    Publishing date 2020-06-18
    Publishing country Italy
    Document type Journal Article ; Review
    ZDB-ID 2105540-3
    ISSN 1764-1489 ; 0397-9148
    ISSN 1764-1489 ; 0397-9148
    DOI 10.23822/EurAnnACI.1764-1489.160
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Sero-epidemiology of human T-cell lymphotropic viruses-1 and -2 infection among pregnant women attending Abuja Teaching Hospital, Nigeria.

    Dangana, Amos / Abdullahi, Idris Nasir / Billyrose, Olusoji Matthew Adeyemi / Emeribe, Anthony Uchenna / Abu, Joel Monday / Anka, Abubakar Umar / Animasaun, Olawale Sunday / Ghamba, Peter Elisha

    Human antibodies

    2021  Volume 29, Issue 1, Page(s) 101–108

    Abstract: Background: There is the paucity of HTLV-1/-2 studies on Nigerian pregnant women despite the medical and public health significance of maternal-to-child transmission of HTLV-1/-2.: Objective: This study aims to determine the seroprevalence and risk ... ...

    Abstract Background: There is the paucity of HTLV-1/-2 studies on Nigerian pregnant women despite the medical and public health significance of maternal-to-child transmission of HTLV-1/-2.
    Objective: This study aims to determine the seroprevalence and risk factors of HTLV-1/-2 infections among pregnant women attending the University of Abuja Teaching Hospital (UATH), Abuja, Nigeria.
    Materials and methods: Blood samples were collected from consented pregnant women and analysed for ant-HTLV-1/-2 total antibodies using a commercial Enzyme-Linked Immunosorbent Assay (ELISA) kit. Pretested structured questionnaires were used to collate participants' socio-demographic variables and risk factors of HTLV infection.
    Results: Out of the 156 pregnant women tested for HTLV-1/-2 antibodies, 16 (10.3%) were seropositive. There was no significant association between the socio-demographic variables collated and seroprevalence of HTLV-1/-2 infection among pregnant women (p> 0.05). Pregnant women with HIV infection had a lower prevalence of HLTV-1/-2 infection than those without HIV infections (7.5% versus 11.7%). Pregnant women with multiple sexual partners had a higher risk of HTLV-1/-2 infection than those who had single (OR = 2.08, 95% CI: 0.53-8.18). Women with a history of needles injury had a higher risk of HTLV-1/-2 infection than those who do not (OR = 1.24, 95% CI: 0.38-4.08). The history of blood transfusion was significantly associated with HTLV-1/-2 infection (p= 0.027). However, no significant association existed between other risk factors of HTLV-1/-2 infection among pregnant women (p> 0.05).
    Conclusion: Considering the 3% pooled national prevalence of HTLV-1/-2 infection in Nigeria, the seroprevalence reported in this study is relatively high. Thus, there is a need for more large cohort studies and routine screening of population at increased risk of infection.
    MeSH term(s) Female ; HIV Infections ; Hospitals, Teaching ; Human T-lymphotropic virus 1 ; Humans ; Nigeria ; Pregnancy ; Pregnant Women ; Prevalence ; Seroepidemiologic Studies ; T-Lymphocytes
    Language English
    Publishing date 2021-02-01
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 1383468-x
    ISSN 1875-869X ; 1093-2607
    ISSN (online) 1875-869X
    ISSN 1093-2607
    DOI 10.3233/HAB-200435
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Need for preventive and control measures for Lassa fever through the One Health strategic approach

    Idris Nasir Abdullahi / Abubakar Umar Anka / Peter Elisha Ghamba / Nkechi Blessing Onukegbe / Dele Ohinoyi Amadu / Matthew Oluwafemi Salami

    Proceedings of Singapore Healthcare, Vol

    2020  Volume 29

    Abstract: Lassa virus (LASV) has increasingly been recognised as a significant public-health pathogen transmitted by rodents. LASV infection leads to life-threatening Lassa fever, which has high potential for severe morbidity and mortality. There have been several ...

    Abstract Lassa virus (LASV) has increasingly been recognised as a significant public-health pathogen transmitted by rodents. LASV infection leads to life-threatening Lassa fever, which has high potential for severe morbidity and mortality. There have been several scientific efforts to understand the genomics and ecological epidemiology of Lassa. However, very limited studies have focused on the short- and long-term impacts of environmental factors, human behaviours and rodent activities on LASV transmission dynamics and control. Recently, a very plausible and ideal way to address the Lassa epidemic has been considered through the One Health approach. The One Health system of intervention is capable of providing better and comprehensive information necessary to address the complex interplay between human, ecological, and environmental determinants of LASV transmission, persistence and re-emergence. Thus, the aim of this article was to review critically the impacts of various environmental factors on rodent infestations, LASV transmission and how human activities contribute to the persistence of Lassa with regard to exploring how they could be harnessed for better understanding of Lassa prevention and control through a concerted One Health approach.
    Keywords Medicine ; R
    Subject code 333
    Language English
    Publishing date 2020-09-01T00:00:00Z
    Publisher SAGE Publishing
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  8. Article ; Online: Leucocytes and Th-associated Cytokine Profile of HIV-Leishmaniasis Co-Infected Persons Attending Abuja Teaching Hospital, Nigeria

    Idris Nasir Abdullahi / Anthony Uchenna Emeribe / Hafeez Aderinsayo Adekola / Habiba Yahaya Muhammad / Abdurrahman El-fulaty Ahmad / Abubakar Umar Anka / Yusuf Mohammed / Shamsuddeen Haruna / Bamidele Soji Oderinde / Halima Ali Shuwa / Adamu Babayo

    Eurasian Journal of Medicine, Vol 52, Iss 3, Pp 271-

    2020  Volume 276

    Keywords Medicine (General) ; R5-920
    Language English
    Publishing date 2020-10-01T00:00:00Z
    Publisher AVES
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  9. Article: Leucocytes and Th-associated Cytokine Profile of HIV-Leishmaniasis Co-Infected Persons Attending Abuja Teaching Hospital, Nigeria.

    Abdullahi, Idris Nasir / Emeribe, Anthony Uchenna / Adekola, Hafeez Aderinsayo / Muhammad, Habiba Yahaya / Ahmad, Abdurrahman El-Fulaty / Anka, Abubakar Umar / Mohammed, Yusuf / Haruna, Shamsuddeen / Oderinde, Bamidele Soji / Shuwa, Halima Ali / Babayo, Adamu

    The Eurasian journal of medicine

    2020  Volume 52, Issue 3, Page(s) 271–276

    Abstract: Objective: T-helper cells (Th)-1& -2 cytokines homeostasis control or predict clinical outcome of infected persons, especially those with HIV /AIDS. This case-control study evaluated the leucocytes differentials, TNF-alpha, interleukin (IL)-2 and -10 ... ...

    Abstract Objective: T-helper cells (Th)-1& -2 cytokines homeostasis control or predict clinical outcome of infected persons, especially those with HIV /AIDS. This case-control study evaluated the leucocytes differentials, TNF-alpha, interleukin (IL)-2 and -10 levels among HIV infected persons with serological evidence of leishmaniasis attending University of Abuja Teaching Hospital, Nigeria.
    Materials and methods: Blood samples from 28 HIV infected persons who had Leishmania donovani rK39 and Immunoglobulin-G (IgG) positive (group 1), 30 age- & -sex matched HIV infected persons without Leishmania antibodies (group 2) and 30 apparently healthy persons without HIV and Leishmania antibodies (group 3). Full blood counts, TNF alpha, IL-2 and -10 levels were analyzed using automated hematology analyzer and ELISA, respectively. Structured questionnaires were used to collate biodata and clinical presentations of participants.
    Results: Ten (35.7%) participants in group 1 were on ART, 15 (50%) in group 2 were on ART, while group 3 were ART naïve. There were significantly higher values in basophil (4.4±2.5%) and eosinophil counts (12.9±3.8%) in HIV/leishmania coinfected persons (p<0.005). However, other white cells subpopulation was significantly lower in HIV/leishmania co-infected participants (p<0.05). There was significantly reduced CD4+ T cell counts ([119±26 versus 348±63 versus 605±116 cells/mm3]), TNF-alpha ([36.82±8.21 versus 64.67±12.54 versus 254.98±65.59 pg/mL]) and IL-2 levels ([142.14±20.91 versus 507.6±84.42 versus 486.62±167.87 pg/mL]) among HIV/Leishmania co-infected participants compared to group 2 and group 3 participants, respectively. However, higher IL-10 level (80.35±14.57 pg/mL) was found in HIV/Leishmania co-infected participants as opposed to the HIV monoinfected (62.2±10.43 pg/mL) and apparently healthy persons (23.97±4.88 pg/mL) (p<0.001).
    Conclusion: Eosinophil, basophil counts and serum IL-10 level were high in HIV/Leishmania coinfected persons, demonstrating parasite-induced hypersensitivity and immunosuppression.
    Language English
    Publishing date 2020-06-09
    Publishing country Turkey
    Document type Journal Article
    ZDB-ID 2577670-8
    ISSN 1308-8742 ; 1308-8734
    ISSN (online) 1308-8742
    ISSN 1308-8734
    DOI 10.5152/eurasianjmed.2020.20008
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Leucocytes and Th-associated cytokine profile of HIV-leishmaniasis coinfected patients attending the Abuja Teaching Hospital, Nigeria

    Idris Nasir Abdullahi / Anthony Uchenna Emeribe / Hafeez Aderinsayo Adekola / Habiba Yahaya Muhammad / Abdurrahman El-fulaty Ahmad / Abubakar Umar Anka / Shamsuddeen Haruna / Bamidele Soji Oderinde / Yusuf Mohammed / Halima Ali Shuwa / Adamu Babayo

    Journal of Medical Science, Vol 89, Iss

    2020  Volume 1

    Abstract: Introduction. T-helper cells (Th)-1& -2 cytokines homeostasis control orpredict clinical outcome of infected persons, especially those with HIV /AIDS. This case-control study evaluated the leucocytes differentials, TNF-alpha, interleukin (IL)-2 and -10 ... ...

    Abstract Introduction. T-helper cells (Th)-1& -2 cytokines homeostasis control orpredict clinical outcome of infected persons, especially those with HIV /AIDS. This case-control study evaluated the leucocytes differentials, TNF-alpha, interleukin (IL)-2 and -10 levels among HIV infected persons with serological evidence of leishmaniasis attending University of Abuja Teaching Hospital, Nigeria. Material and Methods. Blood samples from 28 HIV infected persons who had Leishmania donovani rK39 and IgG positive (group 1), 30 age- & -sex matched HIV infected persons without Leishmania antibodies (group 2) and 30 apparently healthy persons without HIV and Leishmania antibodies (group 3). Full blood counts, TNF alpha, IL-2 and -10 levels were analyzed using automated hematology analyzer and ELISA, respectively. Structured questionnaires were used to collate biodata and clinical presentations of participants. Results. Ten (35.7%) participants in group 1 were on ART, 15 (50%) in group 2 were on ART, while group 3 were ART naïve. There were significantly higher values in basophil (4.4 ± 2.5%) and eosinophil counts (12.9 ± 3.8%) in HIV/leishmania coinfected persons (p ˂ 0.005). However, other white cells subpopulation was significantly lower in HIV/leishmania co-infected participants (p ˂ 0.05). There was significantly reduced CD4+ T cell counts ([119 ± 26 versus 348 ± 63 versus 605 ± 116 cells/mm3]), TNF-alpha ([36.82 ± 8.21 versus 64.67 ± 12.54 versus 254.98 ± 65.59 pg/mL]) and IL-2 levels ([142.14 ± 20.91 versus 507.6 ± 84.42 versus 486.62 ± 167.87 pg/mL]) among HIV/Leishmania co-infected participants compared to group 2 and group 3 participants, respectively. However, higher IL-10 level (80.35 ± 14.57 pg/mL) was found in HIV/Leishmania co-infected participants as opposed to the HIV mono-infected (62.2 ± 10.43 pg/mL) and apparently healthy persons (23.97 ± 4.88 pg/mL) (p ˂ 0.001). Conclusion. Eosinophil, basophil counts and serum IL-10 level were high in HIV/Leishmania coinfected persons, demonstrating parasite-induced ...
    Keywords Cellular Immunity ; Cytokines ; Leishmaniasis ; Pro-inflammation ; HIV co-infection ; Medicine ; R
    Language English
    Publishing date 2020-01-01T00:00:00Z
    Publisher Poznan University of Medical Sciences
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

To top