LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 14

Search options

  1. Article ; Online: THE ECOLOGICAL SIGNIFICANCE OF VIRUSES IN AQUATIC ECOSYSTEMS

    A. Iftikhar / Hafsa / R. Farooq / F. Abdullah / M. Ali

    Pakistan Journal of Agriculture, Agricultural Engineering & Veterinary Sciences, Vol 39, Iss

    A COMPREHENSIVE ANALYSIS

    2024  Volume 2

    Abstract: It is widely acknowledged that viruses are essential elements of the aquatic Environment, contributing significantly to various ecological processes and altering the dynamics of aquatic ecosystems. The variety of viruses in aquatic habitats, including ... ...

    Abstract It is widely acknowledged that viruses are essential elements of the aquatic Environment, contributing significantly to various ecological processes and altering the dynamics of aquatic ecosystems. The variety of viruses in aquatic habitats, including freshwater and marine ecosystems, is enormous. Numerous different types of organisms, such as bacteria, algae, protozoa, and even multicellular organisms, are susceptible to these viral interactions, and these organisms have a significant impact on the design and operation of aquatic ecosystems. In aquatic ecosystems, viral-mediated mortality facilitates the recycling of nutrients and energy by influencing the composition of microbial populations. Additionally, viruses participate in genetic transfer procedures and are essential for horizontal gene transfer. They also serve as genetic material carriers, allowing the transfer of genes between various organisms. This phenomenon affects the ecological balance in the aquatic Environment and the evolution and adaption of microbial communities. Viruses can be used as instruments to investigate microbial ecology, comprehend host-virus interactions, and create fresh antiviral tactics. Viruses are essential to the health and stability of aquatic environments. Aquatic viruses have attracted attention because of their potential utility in various sectors, including biotechnology and medical research; they are essential elements of the aquatic environment due to their capacity to control microbial populations, reduce toxic algal blooms, and offer insights into microbial ecology. Our comprehension of these complex interactions and their larger implications for environmental health and management will be improved by additional study and investigation of viral dynamics and interactions within aquatic ecosystems. This review attempts to present an overview of the significance of viruses in aquatic ecosystems by highlighting their variety of roles and interactions.
    Keywords aquatic ecosystem ; bio-symbionts ; host-virus interaction ; marine viruses ; microbial control ; Agriculture ; S
    Subject code 333
    Language English
    Publishing date 2024-01-01T00:00:00Z
    Publisher Sindh Agriculture University, Tandojam
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  2. Article ; Online: NMR-Based Metabolomics: A New Paradigm to Unravel Defense-Related Metabolites in Insect-Resistant Cotton Variety through Different Multivariate Data Analysis Approaches.

    Shami, Anam Amin / Akhtar, Muhammad Tayyab / Mumtaz, Muhammad Waseem / Mukhtar, Hamid / Tahir, Amna / Shahzad-Ul-Hussan, Syed / Chaudhary, Safee Ullah / Muneer, Bushra / Iftikhar, Hafsa / Neophytou, Marios

    Molecules (Basel, Switzerland)

    2023  Volume 28, Issue 4

    Abstract: Cotton ( ...

    Abstract Cotton (
    MeSH term(s) Animals ; Gossypium/genetics ; Plants, Genetically Modified/genetics ; Shikimic Acid/metabolism ; Pest Control, Biological ; Insecta/genetics ; Multivariate Analysis ; Magnetic Resonance Spectroscopy ; Data Analysis ; Bacterial Proteins/metabolism ; Endotoxins/metabolism ; Hemolysin Proteins/metabolism
    Chemical Substances Shikimic Acid (29MS2WI2NU) ; Bacterial Proteins ; Endotoxins ; Hemolysin Proteins
    Language English
    Publishing date 2023-02-13
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 1413402-0
    ISSN 1420-3049 ; 1431-5165 ; 1420-3049
    ISSN (online) 1420-3049
    ISSN 1431-5165 ; 1420-3049
    DOI 10.3390/molecules28041763
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article: The Psychological Impact of Coronavirus Disease 2019 on Patients Attending a Tertiary Healthcare Facility in Pakistan: A Cross-Sectional Study.

    Ali, Umar Abdul / Iftikhar, Nadia / Amat-Ur-Rasool, Hafsa / Ahmed, Mehboob / Hafeez, Javeria / Carter, Wayne G

    Healthcare (Basel, Switzerland)

    2022  Volume 10, Issue 6

    Abstract: The COVID-19 pandemic has had a damaging impact on global health. Post-infection, patients may experience mental health difficulties and therefore require suitable psychological treatment and support. The objective of this study was to identify the ... ...

    Abstract The COVID-19 pandemic has had a damaging impact on global health. Post-infection, patients may experience mental health difficulties and therefore require suitable psychological treatment and support. The objective of this study was to identify the psychological impact of COVID-19 on patients who were recovering from the physical effects of the disease, and to examine socio-demographic correlates within one month of treatment at a tertiary healthcare facility in Pakistan. A cross-sectional study was employed that utilized the Depression Anxiety Stress Scale-21 and Post-Traumatic Stress Disorder (PTSD) Checklist for DSM-5. A questionnaire was administered to 250 patients, with data collected over three months. Mild to extremely severe scores of depression, anxiety and stress were reported by approximately 43%, 52% and 42% of participants, respectively, and 8% developed PTSD. The incidence of depression, anxiety, stress or PTSD was not significantly associated with gender, age or previous interaction with COVID-19 patients. Depression was significantly associated with levels of education, severity of COVID-19 disease and a patient's current condition. Anxiety was associated with healthcare worker status. The severity of disease and a patient's current condition were also linked to the levels of anxiety, stress and the presence of PTSD. Collectively, these results indicate that a high percentage of patients recovering from COVID-19 experience psychological distress.
    Language English
    Publishing date 2022-06-05
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2721009-1
    ISSN 2227-9032
    ISSN 2227-9032
    DOI 10.3390/healthcare10061049
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: The Psychological Impact of Coronavirus Disease 2019 on Patients Attending a Tertiary Healthcare Facility in Pakistan

    Umar Abdul Ali / Nadia Iftikhar / Hafsa Amat-ur-Rasool / Mehboob Ahmed / Javeria Hafeez / Wayne G. Carter

    Healthcare, Vol 10, Iss 1049, p

    A Cross-Sectional Study

    2022  Volume 1049

    Abstract: The COVID-19 pandemic has had a damaging impact on global health. Post-infection, patients may experience mental health difficulties and therefore require suitable psychological treatment and support. The objective of this study was to identify the ... ...

    Abstract The COVID-19 pandemic has had a damaging impact on global health. Post-infection, patients may experience mental health difficulties and therefore require suitable psychological treatment and support. The objective of this study was to identify the psychological impact of COVID-19 on patients who were recovering from the physical effects of the disease, and to examine socio-demographic correlates within one month of treatment at a tertiary healthcare facility in Pakistan. A cross-sectional study was employed that utilized the Depression Anxiety Stress Scale-21 and Post-Traumatic Stress Disorder (PTSD) Checklist for DSM-5. A questionnaire was administered to 250 patients, with data collected over three months. Mild to extremely severe scores of depression, anxiety and stress were reported by approximately 43%, 52% and 42% of participants, respectively, and 8% developed PTSD. The incidence of depression, anxiety, stress or PTSD was not significantly associated with gender, age or previous interaction with COVID-19 patients. Depression was significantly associated with levels of education, severity of COVID-19 disease and a patient’s current condition. Anxiety was associated with healthcare worker status. The severity of disease and a patient’s current condition were also linked to the levels of anxiety, stress and the presence of PTSD. Collectively, these results indicate that a high percentage of patients recovering from COVID-19 experience psychological distress.
    Keywords anxiety ; COVID-19 psychological impact ; depression ; PTSD ; stress ; Medicine ; R
    Subject code 150
    Language English
    Publishing date 2022-06-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  5. Article ; Online: Identification of potential inhibitors of three key enzymes of SARS-CoV2 using computational approach.

    Iftikhar, Hafsa / Ali, Hafiza Nayyer / Farooq, Sadia / Naveed, Hammad / Shahzad-Ul-Hussan, Syed

    Computers in biology and medicine

    2020  Volume 122, Page(s) 103848

    Abstract: The recent outbreak of coronavirus disease-19 (COVID-19) continues to drastically affect healthcare throughout the world. To date, no approved treatment regimen or vaccine is available to effectively attenuate or prevent the infection. Therefore, ... ...

    Abstract The recent outbreak of coronavirus disease-19 (COVID-19) continues to drastically affect healthcare throughout the world. To date, no approved treatment regimen or vaccine is available to effectively attenuate or prevent the infection. Therefore, collective and multidisciplinary efforts are needed to identify new therapeutics or to explore effectiveness of existing drugs and drug-like small molecules against SARS-CoV-2 for lead identification and repurposing prospects. This study addresses the identification of small molecules that specifically bind to any of the three essential proteins (RdRp, 3CL-protease and helicase) of SARS-CoV-2. By applying computational approaches we screened a library of 4574 compounds also containing FDA-approved drugs against these viral proteins. Shortlisted hits from initial screening were subjected to iterative docking with the respective proteins. Ranking score on the basis of binding energy, clustering score, shape complementarity and functional significance of the binding pocket was applied to identify the binding compounds. Finally, to minimize chances of false positives, we performed docking of the identified molecules with 100 irrelevant proteins of diverse classes thereby ruling out the non-specific binding. Three FDA-approved drugs showed binding to 3CL-protease either at the catalytic pocket or at an allosteric site related to functionally important dimer formation. A drug-like molecule showed binding to RdRp in its catalytic pocket blocking the key catalytic residues. Two other drug-like molecules showed specific interactions with helicase at a key domain involved in catalysis. This study provides lead drugs or drug-like molecules for further in vitro and clinical investigation for drug repurposing and new drug development prospects.
    MeSH term(s) Amides ; Betacoronavirus/enzymology ; COVID-19 ; Carbamates ; Catalytic Domain ; Computer Simulation ; Coronavirus Infections/drug therapy ; Cyclopropanes ; Dimerization ; Drug Design ; Drug Repositioning ; Humans ; Molecular Docking Simulation ; Pandemics ; Pneumonia, Viral/drug therapy ; Protease Inhibitors/chemistry ; Protease Inhibitors/pharmacology ; Quinoxalines/pharmacology ; Rimantadine/pharmacology ; SARS-CoV-2 ; Sulfonamides ; Viral Proteins/chemistry ; COVID-19 Drug Treatment
    Chemical Substances Amides ; Carbamates ; Cyclopropanes ; Protease Inhibitors ; Quinoxalines ; Sulfonamides ; Viral Proteins ; Rimantadine (0T2EF4JQTU) ; grazoprevir (4O2AB118LA)
    Keywords covid19
    Language English
    Publishing date 2020-06-09
    Publishing country United States
    Document type Journal Article
    ZDB-ID 127557-4
    ISSN 1879-0534 ; 0010-4825
    ISSN (online) 1879-0534
    ISSN 0010-4825
    DOI 10.1016/j.compbiomed.2020.103848
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Identification of potential inhibitors of three key enzymes of SARS-CoV2 using computational approach

    Iftikhar, Hafsa / Ali, Hafiza Nayyer / Farooq, Sadia / Naveed, Hammad / Shahzad-ul-Hussan, Syed

    Computers in Biology and Medicine

    2020  Volume 122, Page(s) 103848

    Keywords Health Informatics ; Computer Science Applications ; covid19
    Language English
    Publisher Elsevier BV
    Publishing country us
    Document type Article ; Online
    ZDB-ID 127557-4
    ISSN 1879-0534 ; 0010-4825
    ISSN (online) 1879-0534
    ISSN 0010-4825
    DOI 10.1016/j.compbiomed.2020.103848
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  7. Article ; Online: Acacia nilotica polyphenol extract restores glucose homeostasis by upregulating the insulin secretion and lowering the oxidative stress through down regulation of c-Jun N-terminal kinase (JNK) signaling cascade

    Wafa Majeed / Bilal Aslam / Asra Iftikhar / Ambreen Mehmood Awan / Faraza Javed / Maria Daud / Nabeeha Shahab / Mahnoor Syed / Hafsa Iqbal

    Journal of King Saud University: Science, Vol 33, Iss 5, Pp 101474- (2021)

    2021  

    Abstract: Objectives: Acacia nilotica (A. nilotica) has been used in ayurvedic system of medicine for the treatment of numerous metabolic disorders from decades. Despite its wide usage in traditional medicine system, to our knowledge, little attention has been ... ...

    Abstract Objectives: Acacia nilotica (A. nilotica) has been used in ayurvedic system of medicine for the treatment of numerous metabolic disorders from decades. Despite its wide usage in traditional medicine system, to our knowledge, little attention has been given to the mechanisms involved in therapeutic potential of A. nilotica. The pupose of our study was to understand the molecular and biochemical mechanisms involved in protective effect of A. nilotica polyphenol extract (A. nilotica PPE) on diabetes induced by alloxan monohydrate. Methods: Total polyphenols and total flavonoids in A. nilotica PPE were determined using Folin-Ciocalteu method and Aluminiun Chloride colorimetric method respectively. HPLC analysis of A. nilotica PPE was performed to determine the phenolic contents. Antidiabetic potential of A. nilotica PPE was evaluated through biochemical (FBG, serum glucose, serum insulin, HbA1c, serum C-peptide), antioxidant defense markers, Intracellular ROS and lipid peroxidation measurements as well as histopathological analysis. qRT-PCR analysis was also executed to measure the expression level of numerous genes involved in insulin signaling cascade (Pdx-1, ngn-3, Ins-1, GLUT-4, IRS-1) and c-Jun N-terminal kinase (JNK) downstream cascade (MAPK-8, Traf-4 & Traf-6) to determine the main molecular mechanisms involved in antidiabetic potential of A. nilotica PPE. Results: Results of the study have confirmed the presence of total polyphenolic (61.17 mg GAE/g) and total flavonoid (53.12 mg CE/g) contents in A. nilotica PPE. HPLC assay of A.nilotica PPE revealed the presence of quercitin, gallic acid, chlorogenic acid, Kaempferol and catechin. A. nilotica PPE significantly inverted the hyperglycemia by reducing the FBG, serum glucose, HbA1c levels and improving the insulin & C-peptide levels. A. nilotica PPE improved the antioxidant defense markers (SOD, CAT, GPx, GSH) and reduced the intracellular ROS and TBARS levels. Alloxan induced histological changes were also recovered in extract treated groups. A. ...
    Keywords A. nilotica PPE ; HPLC ; Insulin signaling pathway ; JNK pathway ; GLUT-4 ; ROS ; Science (General) ; Q1-390
    Subject code 571
    Language English
    Publishing date 2021-07-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  8. Article ; Online: ANTIBIOTICS IN THE MANAGEMENT OF BRUCELLOSIS

    Zafar Hayat / Habibullah Khan / Iftikhar Ahmad / Hafsa Habib / Khizar Hayat

    Gomal Journal of Medical Sciences, Vol 16, Iss 4, Pp 114-

    2018  Volume 116

    Abstract: Brucellosis is the most common zoonotic bacterial infection in the world. The causative organism is Brucella spp. and the incubation of period is 5 days to 5 months. Although immunological tests are widely used for the diagnosis but cultures of the blood ...

    Abstract Brucellosis is the most common zoonotic bacterial infection in the world. The causative organism is Brucella spp. and the incubation of period is 5 days to 5 months. Although immunological tests are widely used for the diagnosis but cultures of the blood or other clinical specimens is the gold standard for the diagnosis. Outbreaks of brucellosis occur from time to time. It spreads mostly in the communities having close contact with the sheep and cattle, like farmers, cattle grazers, veterinary workers, and butchers. In the urban situation the outbreaks usually occur due to consumption of unpasteurized milk or its products. The clinical features of brucellosis are protean but the major one is a prolonged fever. Infected animals are the reservoirs and the sources of infection. Antibiotics have a major role in the management of brucellosis. Although a single antibiotic may be effective but a combination is preferred to prevent the chances of development of resistance and recurrence of disease. Antibiotics commonly used in the management of brucellosis are doxycycline, rifampicin, streptomycin, fluoroquinolones, cotrimoxazole, and chloramphenicol. Resistance to one or the other antibiotic have been reported from time to time. Dual therapy is commonly prescribed and triple therapy is used in serious conditions like neuro-brucellosis, endocarditis, or recurrence. The objective of this review was to evaluate the effects of various antibiotic regimens in the management of brucellosis. Antibiotic resistance is a problem which can aggravate the situation in future. We suggest that antibiotics’ use should be rationalized to prevent future drug resistance. At least dual therapy should be used to prevent the chances of recurrence and triple therapy for complicated cases and in cases of relapse. There should be no compromise on the optimal doses and duration of therapy.
    Keywords brucellosis ; antimicrobial susceptibility ; antibiotics ; antimicrobials ; brucella mellitensis ; brucella abortus ; Medicine ; R
    Subject code 610
    Language English
    Publishing date 2018-12-01T00:00:00Z
    Publisher Gomal Medical College, D.I.Khan, Pakistan
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  9. Article ; Online: "Outcomes of COVID-19 infection in patients with hematological malignancies- A multicenter analysis from Pakistan".

    Zaki, Adeeba / Soomar, Salman Muhammad / Khan, Danish Hasan / Shaharyar Sheikh, Hasan / Iftikhar, Raheel / Mir, Ayaz / Aziz, Zeba / Bano, Khadija / Naseer, Hafsa / Chaudhry, Qamar Un-Nisa / Bokhari, Syed Waqas Imam / Shabbir-Moosajee, Munira

    PloS one

    2022  Volume 17, Issue 4, Page(s) e0267139

    Abstract: Purpose: COVID-19 infection resulting from severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) began to spread across the globe in early 2020. Patients with hematologic malignancies are supposed to have an increased risk of mortality from ... ...

    Abstract Purpose: COVID-19 infection resulting from severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) began to spread across the globe in early 2020. Patients with hematologic malignancies are supposed to have an increased risk of mortality from coronavirus disease of 2019 (COVID-19) infection. From Pakistan, we report the analysis of the outcome and interaction between patient demographics and tumor subtype and COVID-19 infection and hematological malignancy.
    Patients and methods: This multicenter, retrospective study included adult patients with a history of histologically proven hematological malignancies who were tested positive for COVID-19 via PCR presented at the oncology department of 5 tertiary care hospitals in Pakistan from February to August 2020. A patient with any known hematological malignancy who was positive for COVID-19 on RT-PCR, was included in the study. Chi-square test and Cox-regression hazard regression model was applied considering p ≤ 0.05 significant.
    Results: A total of 107 patients with hematological malignancies were diagnosed with COVID-19, out of which 82 (76.64%) were alive, and 25 (23.36%) were dead. The significant hematological malignancy was B-cell Lymphoma in dead 4 (16.00%) and alive group 21 (25.61%), respectively. The majority of the patients in both the dead and alive group were on active treatment for hematological malignancy while they came positive for COVID-19 [21 (84.00%) & 48 (58.54%) p 0.020]. All patients in the dead group were admitted to the hospital 25 (100.00%), and among these, 14 (56.00%) were admitted in ICU with a median 11 (6-16.5) number of days. Among those who had contact exposure, the hazard of survival or death in patients with hematological malignancies and COVID-19 positive was 2.18 (CI: 1.90-4.44) times and 3.10 (CI: 2.73-4.60) times in patients with travel history compared to no exposure history (p 0.001).
    Conclusion: Taken together, this data supports the emerging consensus that patients with hematologic malignancies experience significant morbidity and mortality resulting from COVID-19 infection.
    MeSH term(s) Adult ; COVID-19 ; Hematologic Neoplasms/therapy ; Humans ; Pakistan/epidemiology ; Retrospective Studies ; SARS-CoV-2
    Language English
    Publishing date 2022-04-21
    Publishing country United States
    Document type Journal Article ; Multicenter Study
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0267139
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: “Outcomes of COVID-19 infection in patients with hematological malignancies- A multicenter analysis from Pakistan”

    Adeeba Zaki / Salman Muhammad Soomar / Danish Hasan Khan / Hasan Shaharyar Sheikh / Raheel Iftikhar / Ayaz Mir / Zeba Aziz / Khadija Bano / Hafsa Naseer / Qamar un–Nisa Chaudhry / Syed Waqas Imam Bokhari / Munira Shabbir-Moosajee

    PLoS ONE, Vol 17, Iss

    2022  Volume 4

    Abstract: Purpose COVID-19 infection resulting from severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) began to spread across the globe in early 2020. Patients with hematologic malignancies are supposed to have an increased risk of mortality from ... ...

    Abstract Purpose COVID-19 infection resulting from severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) began to spread across the globe in early 2020. Patients with hematologic malignancies are supposed to have an increased risk of mortality from coronavirus disease of 2019 (COVID-19) infection. From Pakistan, we report the analysis of the outcome and interaction between patient demographics and tumor subtype and COVID-19 infection and hematological malignancy. Patients and methods This multicenter, retrospective study included adult patients with a history of histologically proven hematological malignancies who were tested positive for COVID-19 via PCR presented at the oncology department of 5 tertiary care hospitals in Pakistan from February to August 2020. A patient with any known hematological malignancy who was positive for COVID-19 on RT-PCR, was included in the study. Chi-square test and Cox-regression hazard regression model was applied considering p ≤ 0.05 significant. Results A total of 107 patients with hematological malignancies were diagnosed with COVID-19, out of which 82 (76.64%) were alive, and 25 (23.36%) were dead. The significant hematological malignancy was B-cell Lymphoma in dead 4 (16.00%) and alive group 21 (25.61%), respectively. The majority of the patients in both the dead and alive group were on active treatment for hematological malignancy while they came positive for COVID-19 [21 (84.00%) & 48 (58.54%) p 0.020]. All patients in the dead group were admitted to the hospital 25 (100.00%), and among these, 14 (56.00%) were admitted in ICU with a median 11 (6–16.5) number of days. Among those who had contact exposure, the hazard of survival or death in patients with hematological malignancies and COVID-19 positive was 2.18 (CI: 1.90–4.44) times and 3.10 (CI: 2.73–4.60) times in patients with travel history compared to no exposure history (p 0.001). Conclusion Taken together, this data supports the emerging consensus that patients with hematologic malignancies experience significant morbidity and mortality resulting from COVID-19 infection.
    Keywords Medicine ; R ; Science ; Q
    Subject code 610 ; 616
    Language English
    Publishing date 2022-01-01T00:00:00Z
    Publisher Public Library of Science (PLoS)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

To top