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  1. Article: A computational evaluation of structural stability of omicron and delta mutations of SARS-CoV-2 spike proteins and human ACE-2 interactions.

    Idowu, Kehinde A / Onyenaka, Collins / Olaleye, Omonike A

    Informatics in medicine unlocked

    2022  Volume 33, Page(s) 101074

    Abstract: Several more infectious SARS-CoV-2 variants have emerged globally since SARS-CoV-2 pandemic and the discovery of the first D614G variant of SARS-CoV-2 spike proteins in 2020. Delta (B.1.617.2) and Omicron (B.1.1.529) variants have proven to be of major ... ...

    Abstract Several more infectious SARS-CoV-2 variants have emerged globally since SARS-CoV-2 pandemic and the discovery of the first D614G variant of SARS-CoV-2 spike proteins in 2020. Delta (B.1.617.2) and Omicron (B.1.1.529) variants have proven to be of major concern out of all the reported variants, considering their influence on the virus' transmissibility and severity. This study aimed at evaluating the impact of mutations on these two variants on stability and molecular interactions between the viral Spike protein and human angiotensin converting enzyme-2 (hACE-2). The spike proteins receptor binding domain (RBD) was docked with the hACE-2 using HADDOCK servers. To understand and establish the effects of the mutations on the structural stability and flexibility of the RBD-hACE-2 complex, molecular dynamic (MD) simulation of the docked complex was performed and evaluated. The findings from both molecular docking analysis and binding free energy showed that the Omicron (OM) variant has high receptiveness towards hACE-2 versus Delta variant (DT), thereby, responsible for its increase in transmission. The structural stability and flexibility evaluation of variants' systems showed that mutations on DT and OM variants disturbed the stability of either the spike protein or the RBD-hACE-2 complex, with DT variant having greater instability impact. This study, therefore, assumed this obvious instability observed in DT variant might be associated or responsible for the reported severity in DT variant disease over the OM variant disease. This study provides molecular insight into the effects of OM and DT variants on stability and interactions between SARS-CoV-2 protein and hACE-2.
    Language English
    Publishing date 2022-09-07
    Publishing country England
    Document type Journal Article
    ISSN 2352-9148
    ISSN 2352-9148
    DOI 10.1016/j.imu.2022.101074
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Anti-Tuberculosis Potential of OJT008 against Active and Multi-Drug-Resistant Mycobacterium Tuberculosis: In Silico and In Vitro Inhibition of Methionine Aminopeptidase.

    Onyenaka, Collins / Idowu, Kehinde A / Ha, Ngan P / Graviss, Edward A / Olaleye, Omonike A

    International journal of molecular sciences

    2023  Volume 24, Issue 24

    Abstract: Despite the recent progress in the diagnosis of tuberculosis (TB), the chemotherapeutic management of TB continues to be challenging. ...

    Abstract Despite the recent progress in the diagnosis of tuberculosis (TB), the chemotherapeutic management of TB continues to be challenging.
    MeSH term(s) Humans ; Mycobacterium tuberculosis ; Nickel/pharmacology ; Aminopeptidases/genetics ; Aminopeptidases/chemistry ; Tuberculosis/microbiology ; Methionyl Aminopeptidases ; Tuberculosis, Multidrug-Resistant/drug therapy ; Metals/pharmacology ; Cobalt/pharmacology ; Antitubercular Agents/chemistry
    Chemical Substances Nickel (7OV03QG267) ; Aminopeptidases (EC 3.4.11.-) ; Methionyl Aminopeptidases (EC 3.4.11.18) ; Metals ; Cobalt (3G0H8C9362) ; Antitubercular Agents
    Language English
    Publishing date 2023-12-05
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms242417142
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Anti-Tuberculosis Potential of OJT008 against Active and Multi-Drug-Resistant Mycobacterium Tuberculosis

    Collins Onyenaka / Kehinde A. Idowu / Ngan P. Ha / Edward A. Graviss / Omonike A. Olaleye

    International Journal of Molecular Sciences, Vol 24, Iss 24, p

    In Silico and In Vitro Inhibition of Methionine Aminopeptidase

    2023  Volume 17142

    Abstract: Despite the recent progress in the diagnosis of tuberculosis (TB), the chemotherapeutic management of TB continues to be challenging. Mycobacterium tuberculosis ( Mtb ), the etiological agent of TB, is classified as the 13th leading cause of death ... ...

    Abstract Despite the recent progress in the diagnosis of tuberculosis (TB), the chemotherapeutic management of TB continues to be challenging. Mycobacterium tuberculosis ( Mtb ), the etiological agent of TB, is classified as the 13th leading cause of death globally. In addition, 450,000 people were reported to develop multi-drug-resistant TB globally. The current project focuses on targeting methionine aminopeptidase (MetAP), an essential protein for the viability of Mtb . MetAP is a metalloprotease that catalyzes the excision of the N-terminal methionine (NME) during protein synthesis, allowing the enzyme to be an auspicious target for the development of novel therapeutic agents for the treatment of TB. Mtb possesses two MetAP1 isoforms, MtMetAP1a and MtMetAP1c, which are vital for Mtb viability and, hence, a promising chemotherapeutic target for Mtb therapy. In this study, we cloned and overexpressed recombinant MtMetAP1c. We investigated the in vitro inhibitory effect of the novel MetAP inhibitor, OJT008, on the cobalt ion- and nickel ion-activated MtMetAP1c, and the mechanism of action was elucidated through an in silico approach. The compound’s potency against replicating and multi-drug-resistant (MDR) Mtb strains was also investigated. The induction of the overexpressed recombinant MtMetAP1c was optimized at 8 h with a final concentration of 1 mM Isopropyl β-D-1-thiogalactopyranoside. The average yield from 1 L of Escherichia coli culture for MtMetAP1c was 4.65 mg. A preliminary MtMetAP1c metal dependency screen showed optimum activation with nickel and cobalt ions occurred at 100 µM. The half-maximal inhibitory concentration (IC 50 ) values of OJT008 against MtMetAP1c activated with CoCl 2 and NiCl 2 were 11 µM and 40 µM, respectively. The in silico study showed OJT008 strongly binds to both metal-activated MtMetAP1c, as evidenced by strong molecular interactions and a higher binding score, thereby corroborating our result. This in silico study validated the pharmacophore’s metal specificity. The potency of OJT008 ...
    Keywords tuberculosis ; Mycobacterium tuberculosis ; methionine aminopeptidase (MetAP) ; N-terminal methionine excision (NME) ; Biology (General) ; QH301-705.5 ; Chemistry ; QD1-999
    Subject code 540
    Language English
    Publishing date 2023-12-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article: The functional outcome after tumor resection and endoprosthesis around the knee: a systematic review.

    Idowu, Oluwaseyi / Oluwadiya, Kehinde / Eyesan, Samuel / Nasser, Mohamad / Maden, Michelle / Abudu, Adesegun

    Acta orthopaedica Belgica

    2022  Volume 88, Issue 1, Page(s) 73–85

    Abstract: The evidence for the functional outcome of endo- prosthetic replacement (EPR) after tumour resection has been from few cohort studies. A scoping search revealed no systematic review on patient reported outcome measures after EPR around the knee. The ... ...

    Abstract The evidence for the functional outcome of endo- prosthetic replacement (EPR) after tumour resection has been from few cohort studies. A scoping search revealed no systematic review on patient reported outcome measures after EPR around the knee. The purpose of this study was to evaluate the functional outcome of distal femoral and proximal tibial EPR after tumour resection. A systematic review was conducted using the PRISMA guidelines. The search identified 2560 articles from MEDLINE, EMBASE, CINAHL, and Web of Science. 36 studies satisfying the selection criteria were included for data synthesis. Pooled analysis was performed for homogenous studies. Narrative synthesis was performed for all the studies due to heterogeneity in methodological and statistical analysis. Amongst the overall patient population of 2930, mean ages ranged from 18-66 years and the mean follow up periods in the studies ranged from 12 - 180 months. The weighted mean functional outcome was similar for patients who had DFEPR and PTEPR. The functional outcome scores of Rotating Hinge Knee implants (RHK) were significantly greater than that for Fixed Hinge Knee implants (FHK). The weighted mean functional outcome scores were higher after cemented fixation and after primary EPR procedures. The current evidence suggests that functional out- come after EPR in the knee is good, and RHK implants are better than FHK implants. Functional outcome after primary EPR was significantly better than following revision EPR, and this underscores the importance of minimising complications at the primary surgery.
    MeSH term(s) Arthroplasty, Replacement, Knee/methods ; Child, Preschool ; Humans ; Infant ; Knee Joint/surgery ; Knee Prosthesis/adverse effects ; Neoplasms ; Prosthesis Failure ; Reoperation/methods ; Treatment Outcome
    Language English
    Publishing date 2022-05-05
    Publishing country Belgium
    Document type Journal Article ; Systematic Review
    ZDB-ID 210367-9
    ISSN 0001-6462 ; 1784-407X
    ISSN 0001-6462 ; 1784-407X
    DOI 10.52628/88.1.10
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: A molecular dynamics perspective into estrogen receptor inhibition by selective flavonoids as alternative therapeutic options.

    Sinyani, Angela / Idowu, Kehinde / Shunmugam, Letitia / Kumalo, Hezekiel Mathambo / Khan, Rene

    Journal of biomolecular structure & dynamics

    2022  Volume 41, Issue 9, Page(s) 4093–4105

    Abstract: Zearalenone is an estrogenic mycotoxin which is a common food contaminant and has been implicated in increasing the incidence of carcinogenesis and other reproductive health ailments through the estrogen receptor alpha (ERα) pathway. Competitive ERα ... ...

    Abstract Zearalenone is an estrogenic mycotoxin which is a common food contaminant and has been implicated in increasing the incidence of carcinogenesis and other reproductive health ailments through the estrogen receptor alpha (ERα) pathway. Competitive ERα blockers such as 4-Hydroxytamoxifen (OHT), are synthetic FDA approved drugs which, albeit being an effective anticancer agent, induces life altering side effects. For this reason, there is an increased interest in the use of naturally occurring medicinal plant products such as flavonoids. This study aimed to identity flavonoid ERα inhibitors and provide insights into the mechanism of inhibition using computational techniques. The Molecular Mechanics/Generalized Born Surface Area calculations revealed that quercetrin, hesperidin, epigallocatechin 3-gallate and kaempferol 7-O-glucoside out of 14 flavonoids had higher binding affinity for ERα than OHT. The structural analysis revealed that the binding of the compounds to the receptor lead to dynamic alterations, which induced conformational shift in the structure and orientation of the receptor resulting in stabilised, compact and low energy systems. The results of this study provide imperative information that supports the use of flavonoids in the inhibition of ERα to prevent or ameliorate the consequential adverse effects associated with zearalenone exposure.Communicated by Ramaswamy H. Sarma.
    MeSH term(s) Receptors, Estrogen/chemistry ; Estrogen Receptor alpha ; Molecular Dynamics Simulation ; Flavonoids/pharmacology ; Flavonoids/therapeutic use ; Zearalenone/pharmacology ; Estrogens
    Chemical Substances Receptors, Estrogen ; Estrogen Receptor alpha ; Flavonoids ; Zearalenone (5W827M159J) ; Estrogens
    Language English
    Publishing date 2022-04-27
    Publishing country England
    Document type Journal Article
    ZDB-ID 49157-3
    ISSN 1538-0254 ; 0739-1102
    ISSN (online) 1538-0254
    ISSN 0739-1102
    DOI 10.1080/07391102.2022.2062786
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Inhibitory mechanism of clioquinol and its derivatives at the exopeptidase site of human angiotensin-converting enzyme-2 and receptor binding domain of SARS-CoV-2 viral spike.

    Kehinde, Idowu A / Egbeyemi, Anu / Kaur, Manvir / Onyenaka, Collins / Adebusuyi, Tolulope / Olaleye, Omonike A

    Journal of biomolecular structure & dynamics

    2022  Volume 41, Issue 7, Page(s) 2992–3001

    Abstract: The outbreak of SARS-CoV-2 infections around the world has prompted scientists to explore different approaches to develop therapeutics against COVID-19. This study focused on investigating the mechanism of inhibition of clioquinol (CLQ) and its ... ...

    Abstract The outbreak of SARS-CoV-2 infections around the world has prompted scientists to explore different approaches to develop therapeutics against COVID-19. This study focused on investigating the mechanism of inhibition of clioquinol (CLQ) and its derivatives (7-bromo-5-chloro-8-hydroxyquinoline (CLBQ), 5, 7-Dichloro-8-hydroxyquinoline (CLCQ)) against the viral glycoprotein, and human angiotensin-converting enzyme-2 (hACE-2) involved in SARS-CoV-2 entry. The drugs were docked at the exopeptidase site of hACE-2 and receptor binding domain (RBD) sites of SARS-CoV-2 S
    MeSH term(s) Humans ; SARS-CoV-2 ; Clioquinol ; COVID-19 ; Exopeptidases ; Angiotensins
    Chemical Substances Clioquinol (7BHQ856EJ5) ; Exopeptidases (EC 3.4.-) ; Angiotensins
    Language English
    Publishing date 2022-02-26
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 49157-3
    ISSN 1538-0254 ; 0739-1102
    ISSN (online) 1538-0254
    ISSN 0739-1102
    DOI 10.1080/07391102.2022.2043938
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Inhibitory mechanism of Ambroxol and Bromhexine Hydrochlorides as potent blockers of molecular interaction between SARS-CoV-2 spike protein and human angiotensin-converting Enzyme-2.

    Kehinde, Idowu A / Egbejimi, Anu / Kaur, Manvir / Onyenaka, Collins / Adebusuyi, Tolulope / Olaleye, Omonike A

    Journal of molecular graphics & modelling

    2022  Volume 114, Page(s) 108201

    Abstract: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infects the host cells through interaction of its spike protein with human angiotensin-converting enzyme 2 (hACE-2). High binding affinity between the viral spike protein and host cells hACE-2 ... ...

    Abstract Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infects the host cells through interaction of its spike protein with human angiotensin-converting enzyme 2 (hACE-2). High binding affinity between the viral spike protein and host cells hACE-2 receptor has been reported to enhance the viral infection. Thus, the disruption of this molecular interaction will lead to reduction in viral infectivity. This study, therefore, aimed to analyze the inhibitory potentials of two mucolytic drugs; Ambroxol hydrochlorides (AMB) and Bromhexine hydrochlorides (BHH), to serve as potent blockers of these molecular interactions and alters the binding affinity/efficiency between the proteins employing computational techniques. The study examined the effects of binding of each drug at the receptor binding domain (RBD) of the spike protein and the exopeptidase site of hACE-2 on the binding affinity (ΔG
    MeSH term(s) Ambroxol ; Angiotensin-Converting Enzyme 2 ; Angiotensins/metabolism ; Bromhexine ; COVID-19/drug therapy ; Humans ; Protein Binding ; SARS-CoV-2 ; Spike Glycoprotein, Coronavirus/chemistry
    Chemical Substances Angiotensins ; Spike Glycoprotein, Coronavirus ; spike protein, SARS-CoV-2 ; Ambroxol (200168S0CL) ; Angiotensin-Converting Enzyme 2 (EC 3.4.17.23) ; Bromhexine (Q1J152VB1P)
    Language English
    Publishing date 2022-04-21
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 1396450-1
    ISSN 1873-4243 ; 1093-3263
    ISSN (online) 1873-4243
    ISSN 1093-3263
    DOI 10.1016/j.jmgm.2022.108201
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Influence of

    Molehin, Olorunfemi R / Idowu, Kehinde A / Olaoye, Ayonposi B / Fakayode, Aderonke E / Adesua, Oluwatumininu O

    Journal of complementary & integrative medicine

    2021  Volume 19, Issue 4, Page(s) 937–946

    Abstract: Objectives: Doxorubicin (DOX) is a commonly used chemotherapeutic drug. However, its non-target organ toxicities pose a serious problem. This study is to assess the protective role of : Methods: Rats were randomly divided into 5 groups: (a) Control ... ...

    Abstract Objectives: Doxorubicin (DOX) is a commonly used chemotherapeutic drug. However, its non-target organ toxicities pose a serious problem. This study is to assess the protective role of
    Methods: Rats were randomly divided into 5 groups: (a) Control group rats were given 0.9% NaCl as vehicle, (b) DOX group: A single dose of DOX (25 mg/kg; i.p.) was administered and rats were sacrificed 4 days after DOX injection, while groups (c-e) CVE-treated DOX rat groups were given 125, 250 and 500 mg/kg body weight of extracts orally for 12 consecutive days; 8 days before, and 4 days after the DOX administration. Computational techniques were used to determine the inhibitory activities of the compounds against CBR1.
    Results: DOX intoxication caused a significant increase (p<0.05) in serum marker enzymes: ALT, AST, ALP, LDH, CK activities. The levels of liver and heart tissues antioxidant parameters: GPx, SOD, CAT, and GSH were significantly (p<0.05) decreased in DOX-intoxicated rats with concomitant elevation of malondialdehyde levels. Pretreatment with CVE reversed the above trends. From the structural analysis, Rutin and RSA exhibited the highest binding free energies against CBR1, and also exhibited structural stability when bound with CBR1.
    Conclusions: Our study indicates the protective effect of CVE when used in combination with doxorubicin thus improving its chemotherapeutic application via inhibition of CBR-mediated metabolism.
    Language English
    Publishing date 2021-05-10
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2197618-1
    ISSN 1553-3840 ; 2194-6329
    ISSN (online) 1553-3840
    ISSN 2194-6329
    DOI 10.1515/jcim-2020-0231
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Characteristics and outcomes of patients hospitalized with COVID-19 at a tertiary hospital in Nigeria.

    Adekanmbi, Olukemi / Ilesanmi, Olayinka / Idowu, Olusola / Esan, Arinola / Raji, Yemi R / Fowotade, Adeola / Ogunlade, Olubunmi / Akere, Adegboyega / Ololade, Oluwaseun / Ojifinni, Kehinde / Akinola, Olurotimi / Orunmuyi, Akintunde / Eze, Uwom / Akinmoladun, Victor / Adeoye, Abiodun / Adebiyi, Akindele / Olapade-Olaopa, E Oluwabunmi / Otegbayo, Jesse A / Osungbade, Kayode

    African health sciences

    2023  Volume 23, Issue 1, Page(s) 72–82

    Abstract: Background: Data regarding the features and outcomes of hospitalized COVID-19 patients in Africa are increasingly available.: Objectives: To describe socio-demographic, clinical and laboratory characteristics and outcomes of COVID-19 patients.: ... ...

    Abstract Background: Data regarding the features and outcomes of hospitalized COVID-19 patients in Africa are increasingly available.
    Objectives: To describe socio-demographic, clinical and laboratory characteristics and outcomes of COVID-19 patients.
    Methods: A cross-sectional study of 86 adult patients hospitalized with COVID-19 between March and November 2020. Characteristics were described in survivors and non-survivors.
    Results: Mean age was 60.9±16.1 years, 53(61.6%) were male. Co-morbidities were found in 77(89.5%) patients. On severity, 6(7%) were mild, 23(26.7%) moderate, 51(59.3%) severe and 6(7%) critical. Oxygen saturation and respiratory rate were 71±22% and 38±11/minute in non-survivors and 90±7% and 31±7/minute in survivors respectively (p<0.001, p<0.001)). Overall mortality was 47.7% with no death among patients with mild disease and deaths in all patients with critical disease. Duration of hospitalization was 2.0(1.0-4.5) days in those who died and 12(7.0-15.0) days in those who survived (p<0.001). Of the 42 patients that received dexamethasone, 11(26.2%) died, while 31(73.8%) survived (p=<0.001).
    Conclusion: Most of the patients had co-morbidities and there was high mortality in patients with severe and critical COVID-19. Mean oxygen saturation was low and respiratory rate high overall. Factors associated with mortality included: Significantly greater hypoxia and tachypnea, less dexamethasone use and shorter hospitalization.
    MeSH term(s) Adult ; Humans ; Male ; Middle Aged ; Aged ; Female ; COVID-19/epidemiology ; COVID-19/therapy ; SARS-CoV-2 ; Tertiary Care Centers ; Nigeria/epidemiology ; Cross-Sectional Studies ; Hospitalization ; Dexamethasone ; Retrospective Studies
    Chemical Substances Dexamethasone (7S5I7G3JQL)
    Language English
    Publishing date 2023-07-21
    Publishing country Uganda
    Document type Journal Article
    ZDB-ID 2240308-5
    ISSN 1729-0503 ; 1680-6905
    ISSN (online) 1729-0503
    ISSN 1680-6905
    DOI 10.4314/ahs.v23i1.9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: The Prevalence and Pattern of Anaemia in Type 2 Diabetics in Ogbomosho, An Urban Community in Southwestern Nigeria.

    Olufemi-Aworinde, Kehinde J / Olutogun, Tolulase A / Akande, Joel O / Akande, Roseline O / Odeyemi, Abiona O / Idowu, Olufemi J / Oke, Elizabeth O / Abolarin, Ademola T / Ala, Oluwabukola A

    Anemia

    2022  Volume 2022, Page(s) 7650015

    Abstract: Anaemia is a frequent finding in type 2 diabetes, but it is typically seen with established chronic kidney disease and renal insufficiency. Cases, where anaemia predates renal insufficiency, are associated with a worse prognosis for the type 2 diabetes ... ...

    Abstract Anaemia is a frequent finding in type 2 diabetes, but it is typically seen with established chronic kidney disease and renal insufficiency. Cases, where anaemia predates renal insufficiency, are associated with a worse prognosis for the type 2 diabetes patient and an increased susceptibility to complications. This study aims to determine the prevalence and type of anaemia in persons living with type 2 diabetes without established chronic kidney disease in our environment. The study was a hospital-based cross-sectional study that involved 141 people with known type 2 diabetes as the study group and 140 healthy persons as controls. The study population and the controls were selected using a multistage sampling technique. Data were collected using an interviewer-administered semistructured questionnaire at the Endocrinology clinic, Bowen University Teaching Hospital, Ogbomosho. The data obtained were analyzed using the IBM SPSS version 23.0 (
    Language English
    Publishing date 2022-10-26
    Publishing country Egypt
    Document type Journal Article
    ZDB-ID 2595393-X
    ISSN 2090-1275 ; 2090-1267
    ISSN (online) 2090-1275
    ISSN 2090-1267
    DOI 10.1155/2022/7650015
    Database MEDical Literature Analysis and Retrieval System OnLINE

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