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Turkish Journal of Biology

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COVID-19

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Adoptive T-Cell Therapies To Overcome T Cell-Dependent Immune Dysregulations In Covid-19, Sevgi̇ Kalkanli Taş, Merve Sai̇de Uzunoğlu, Ayli̇n Seher Uzunoğlu, Duygu Kirkik, Derya Altunkanat, Nevi̇n Kalkanli Jan 2022

Adoptive T-Cell Therapies To Overcome T Cell-Dependent Immune Dysregulations In Covid-19, Sevgi̇ Kalkanli Taş, Merve Sai̇de Uzunoğlu, Ayli̇n Seher Uzunoğlu, Duygu Kirkik, Derya Altunkanat, Nevi̇n Kalkanli

Turkish Journal of Biology

Coronavirus disease 2019 (COVID-19) pandemic has been an important global interest that affected millions of people, and it requires a deep investigation of the disease immunology for developing further therapeutic applications. Adoptive T cell therapy promises to address T cell-dependent immune dysregulation in COVID-19 patients by the generation of specific T cell clones against virus-specific antigens. Additionally, targeting B cell-dependent protection through COVID-19 vaccines, which have been developed in the recent year, possessed sufficient prevention for spreading the virus, since the cases and deaths related to COVID-19 tend to decrease after the vaccination. However, adoptive cell therapies are now encouraging …


Development A Novel Multi-Epitope Dna Vaccine Against Human Sars Coronavirus-2: An Immunoinformatics Designing Study, Afshin Samimi Nemati, Sako Mirzaie, Mohammad Reza Masoumian, Fatemeh Sheikhi, Mostafa Jamalan Jan 2022

Development A Novel Multi-Epitope Dna Vaccine Against Human Sars Coronavirus-2: An Immunoinformatics Designing Study, Afshin Samimi Nemati, Sako Mirzaie, Mohammad Reza Masoumian, Fatemeh Sheikhi, Mostafa Jamalan

Turkish Journal of Biology

Human SARS coronavirus 2 (SARS-CoV-2) causes the current global COVID-19 pandemic. The production of an efficient vaccine against COVID-19 is under heavy investigation. In this study, we have designed a novel multiepitope DNA vaccine against SARS-CoV-2 using reverse vaccinology and DNA vaccine approaches. Applying these strategies led to reduce the time and costs of vaccine development and also improve the immune protective characteristics of the vaccine. For this purpose, epitopes of nucleocapsid, membrane glycoprotein, and ORF8 proteins of SARS-CoV-2 chose as targets for B and T-cell receptors. Accordingly, DNA sequences of selected epitopes have optimized for protein expression in the …


Novel Approaches For Covid-19 Diagnosis And Treatment: A Nonsystematic Review, Şebnem Gari̇p Ustaoğlu, Hakan Kaygusuz, Mehmet Di̇nçer Bi̇lgi̇n, Feri̇de Severcan Jan 2021

Novel Approaches For Covid-19 Diagnosis And Treatment: A Nonsystematic Review, Şebnem Gari̇p Ustaoğlu, Hakan Kaygusuz, Mehmet Di̇nçer Bi̇lgi̇n, Feri̇de Severcan

Turkish Journal of Biology

Since COVID-19 pandemic has been continuously rising and spreading, several original contributions and review articles on COVID-19 started to appear in the literature. The review articles are mainly focus on the current status of the pandemic along with current status of the corona diagnosis and treatment process. Due to some disadvantages of the currently used methods, the improvement on the novel promising diagnosis and treatment methods of corona virus is very important issue. In this review, after briefly discussing the status of current diagnosis and treatment methods, we present to the scientific community, novel promising methods in the diagnosis and …


The Current State Of Validated Small Molecules Inhibiting Sars-Cov-2 Non-Structural Proteins, Fati̇h Kocabaş, Merve Uslu Jan 2021

The Current State Of Validated Small Molecules Inhibiting Sars-Cov-2 Non-Structural Proteins, Fati̇h Kocabaş, Merve Uslu

Turkish Journal of Biology

The current COVID-19 outbreak has had a profound influence on public health and daily life. Despite all restrictions and vaccination programs, COVID-19 still can lead to fatality due to a lack of COVID-19-specific treatments. A number of studies have demonstrated the feasibility to develop therapeutics by targeting underlying components of the viral proteome. Here we reviewed recently developed and validated small molecule inhibitors of SARS-CoV-2's nonstructural proteins. We described the validation level of identified compounds specific for SARS-CoV-2 in the presence of in vitro and in vivo supporting data. The mechanisms of pharmacological activity, as well as approaches for developing …


Neuropathy In Covid-19 Associated With Dysbiosis-Related Inflammation, Busra Aktas, Belma Aslim Jan 2021

Neuropathy In Covid-19 Associated With Dysbiosis-Related Inflammation, Busra Aktas, Belma Aslim

Turkish Journal of Biology

Although COVID-19 affects mainly lungs with a hyperactive and imbalanced immune response, gastrointestinal and neurological symptoms such as diarrhea and neuropathic pains have been described as well in patients with COVID-19. Studies indicate that gut-lung axis maintains host homeostasis and disease development with the association of immune system, and gut microbiota is involved in the COVID-19 severity in patients with extrapulmonary conditions. Gut microbiota dysbiosis impairs the gut permeability resulting in translocation of gut microbes and their metabolites into the circulatory system and induce systemic inflammation which, in turn, can affect distal organs such as the brain. Moreover, gut microbiota …


The Effect Of Weekend Curfews On Epidemics: A Monte Carlo Simulation, Hakan Kaygusuz, Ahmet Ni̇hat Berker Jan 2021

The Effect Of Weekend Curfews On Epidemics: A Monte Carlo Simulation, Hakan Kaygusuz, Ahmet Ni̇hat Berker

Turkish Journal of Biology

The ongoing COVID-19 pandemic is being responded with various methods, applying vaccines, experimental treatment options, total lockdowns or partial curfews. Weekend curfews are among the methods for reducing the number of infected persons, and this method is practically applied in some countries such as Turkey. In this study, the effect of weekend curfews on reducing the spread of a contagious disease, such as COVID-19, is modeled using a Monte Carlo algorithm with a hybrid lattice model. In the simulation setup, a fictional country with three towns and 26,610 citizens were used as a model. Results indicate that applying a weekend …


In Silico Drug Repositioning Against Human Nrp1 To Block Sars-Cov-2 Host Entry, Şeref Gül Jan 2021

In Silico Drug Repositioning Against Human Nrp1 To Block Sars-Cov-2 Host Entry, Şeref Gül

Turkish Journal of Biology

Despite COVID-19 turned into a pandemic, no approved drug for the treatment or globally available vaccine is out yet. In such a global emergency, drug repurposing approach that bypasses a costly and long-time demanding drug discovery process is an effective way in search of finding drugs for the COVID-19 treatment. Recent studies showed that SARS-CoV-2 uses neuropilin-1 (NRP1) for host entry. Here we took advantage of structural information of the NRP1 in complex with C-terminal of spike (S) protein of SARSCoV- 2 to identify drugs that may inhibit NRP1 and S protein interaction. U.S. Food and Drug Administration (FDA) approved …


Treatment Of Covid-19 Patients With Quercetin In Combination With Vitamin C And Bromelain: A Prospective, Single - Centre, Randomized, Controlled Trial, Hasan Önal, Bengü Arslan, Nurcan Üçüncü Ergun, Hani̇m Şeyma Topuz, Seda Yilmaz Semerci̇, Mehmet Eren Kurnaz, Yulet Mi̇ray Molu, Mehmet Abdussamet Bozkurt, Nuretti̇n Süner, Ali̇ Kocataş Jan 2021

Treatment Of Covid-19 Patients With Quercetin In Combination With Vitamin C And Bromelain: A Prospective, Single - Centre, Randomized, Controlled Trial, Hasan Önal, Bengü Arslan, Nurcan Üçüncü Ergun, Hani̇m Şeyma Topuz, Seda Yilmaz Semerci̇, Mehmet Eren Kurnaz, Yulet Mi̇ray Molu, Mehmet Abdussamet Bozkurt, Nuretti̇n Süner, Ali̇ Kocataş

Turkish Journal of Biology

Scientific research continues on new preventive and therapeutic strategies against severe acute respiratory syndrome Coronavirus-2 (SARS-CoV-2). So far, there is no proven curative treatment, and a valid alternative therapeutic approach needs to be developed. This study is designed to evaluate the effect of quercetin in COVID-19 treatment. This was a single-centre, prospective randomized controlled cohort study. Routine care versus QCB (quercetin, vitamin C, bromelain) supplementation was compared between 429 patients with at least one chronic disease and moderate-to-severe respiratory symptoms. Demographic features, signs, laboratory results and drug administration data of patients were recorded. The endpoint was that QCB supplementation was …


Current Mutatome Of Sars-Cov-2 In Turkey Reveals Mutations Of Interest, Doğa Eski̇er, Evren Akalp, Özlem Dalan, Gökhan Karakülah, Yavuz Oktay Jan 2021

Current Mutatome Of Sars-Cov-2 In Turkey Reveals Mutations Of Interest, Doğa Eski̇er, Evren Akalp, Özlem Dalan, Gökhan Karakülah, Yavuz Oktay

Turkish Journal of Biology

As the underlying pathogen for the COVID-19 pandemic that has affected tens of millions of lives worldwide, SARS-CoV-2 and its mutations are among the most urgent research topics worldwide. Mutations in the virus genome can complicate attempts at accurate testing or developing a working treatment for the disease. Furthermore, because the virus uses its own proteins to replicate its genome, rather than host proteins, mutations in the replication proteins can have cascading effects on the mutation load of the virus genome. Due to the global, rapidly developing nature of the COVID-19 pandemic, local demographics of the virus can be difficult …


An Update Comprehensive Review On The Status Of Covid-19: Vaccines, Drugs, Variants And Neurological Symptoms, Ebru Özkan Oktay, Sali̇h Tuncay, Tuğba Kaman, Ömer Faruk Karasakal, Öznur Özge Özcan, Tuğçe Soylamiş, Mesut Karahan, Muhsi̇n Konuk Jan 2021

An Update Comprehensive Review On The Status Of Covid-19: Vaccines, Drugs, Variants And Neurological Symptoms, Ebru Özkan Oktay, Sali̇h Tuncay, Tuğba Kaman, Ömer Faruk Karasakal, Öznur Özge Özcan, Tuğçe Soylamiş, Mesut Karahan, Muhsi̇n Konuk

Turkish Journal of Biology

Various recently reported mutant variants, candidate and urgently approved current vaccines against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), many current situations with severe neurological damage and symptoms as well as respiratory tract disorders have begun to be reported. In particular, drug, vaccine, and neutralizing monoclonal antibodies (mAbs) have been developed and are currently being evaluated in clinical trials. Here, we review lessons learned from the use of novel mutant variants of the COVID-19 virus, immunization, new drug solutions, and antibody therapies for infections. Next, we focus on the B 1.1.7, B 1.351, P.1, and B.1.617 lineages or variants of …


Pathogenesis And Treatment Of Cytokine Storm In Covid-19, Mehmet Soy, Gökhan Keser, Mehmet Pami̇r Atagündüz Jan 2021

Pathogenesis And Treatment Of Cytokine Storm In Covid-19, Mehmet Soy, Gökhan Keser, Mehmet Pami̇r Atagündüz

Turkish Journal of Biology

COVID-19 is a viral infection caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) that killed a large number of patients around the world. A hyperinflammatory state resulting in a cytokine storm and adult respiratory distress syndrome seems to be the major cause of the death. Many mechanisms have been suggested in the pathogenesis of COVID-19 associated cytokine storm (COVID-CS). Insufficient viral clearance and persistence of a strong cytokine response despite inadequate antiviral immunity seem to be the main mechanisms underlying the pathogenesis. The diagnosis of COVID-19 is based on relatively constant clinical symptoms, clinical findings, laboratory tests, and …


Genomic Chronicle Of Sars-Cov-2: A Mutational Analysis With Over 1 Million Genome Sequences, Osman Mutluhan Uğurel, Oğuz Ata, Di̇lek Balik Jan 2021

Genomic Chronicle Of Sars-Cov-2: A Mutational Analysis With Over 1 Million Genome Sequences, Osman Mutluhan Uğurel, Oğuz Ata, Di̇lek Balik

Turkish Journal of Biology

Use of information technologies to analyse big data on SARS-CoV-2 genome provides an insight for tracking variations and examining the evolution of the virus. Nevertheless, storing, processing, alignment and analyses of these numerous genomes are still a challenge. In this study, over 1 million SARS-CoV-2 genomes have been analysed to show distribution and relationship of variations that could enlighten development and evolution of the virus. In all genomes analysed in this study, a total of over 215M SNVs have been detected and average number of SNV per isolate was found to be 21.83. Single nucleotide variant (SNV) average is observed …


Coronavac (Sinovac) Covid-19 Vaccine-Induced Molecular Changes In Healthy Human Serum By Infrared Spectroscopy Coupled With Chemometrics, Ayça Doğan Mollaoğlu, Rafi̇g Gurbanov, Mete Severcan, Feri̇de Severcan Jan 2021

Coronavac (Sinovac) Covid-19 Vaccine-Induced Molecular Changes In Healthy Human Serum By Infrared Spectroscopy Coupled With Chemometrics, Ayça Doğan Mollaoğlu, Rafi̇g Gurbanov, Mete Severcan, Feri̇de Severcan

Turkish Journal of Biology

From the beginning of the COVID-19 coronavirus pandemic in December of 2019, the disease has infected millions of people worldwide and caused hundreds of thousands of deaths. Since then, several vaccines have been developed. One of those vaccines is inactivated CoronaVac-Sinovac COVID-19 vaccine. In this proof of concept study, we first aimed to determine CoronaVac-induced biomolecular changes in healthy human serum using infrared spectroscopy. Our second aim was to see whether the vaccinated group can be separated or not from the non-vaccinated group by applying chemometric techniques to spectral data. The results revealed that the vaccine administration induced significant changes …


Cannabinoids For Sars-Cov-2 And Is There Evidence Of Their Therapeutic Efficacy?, Ahmet Onay, Abdulselam Ertaş, Veysel Süzerer, İsmai̇l Yener, Mustafa Abdullah Yilmaz, Emi̇ne Ayaz Ti̇lkat, Remzi̇ Eki̇nci̇, Nesri̇n Bozhan, Sevgi̇ İrtegün Jan 2021

Cannabinoids For Sars-Cov-2 And Is There Evidence Of Their Therapeutic Efficacy?, Ahmet Onay, Abdulselam Ertaş, Veysel Süzerer, İsmai̇l Yener, Mustafa Abdullah Yilmaz, Emi̇ne Ayaz Ti̇lkat, Remzi̇ Eki̇nci̇, Nesri̇n Bozhan, Sevgi̇ İrtegün

Turkish Journal of Biology

To combat the coronaviruses and their novel variants, therapeutic drugs and the development of vaccines that are to be effective throughout human life are urgently needed. The endocannabinoid system (ECS) acts as a modulator in the activation of the microcirculation, immune system, and autonomic nervous system, along with controlling pharmacological functions such as emotional responses, homeostasis, motor functions, cognition, and motivation. The ECS contains endogenous cannabinoids, cannabinoid receptor (CBRs), and enzymes that regulate their biosynthesis, transport, and degradation. Moreover, phytocannabinoids and synthetic cannabinoids that mimic the action of endocannabinoids also play an essential role in the modulation of the ECS. …


Biosafety And Biosecurity Approaches To Restrain/Contain And Counter Sars-Cov-2/Covid-19 Pandemic: A Rapid-Review, Tauseef Ahmad, Haroon Haroon, Kuldeep Dhama, Khan Sharun, Fazal Mehmood Khan, Irfan Ahmed, Ruchi Tiwari, Taha Hussein Musa, Muhammad Khan, D. Katterine Bonilla-Aldana, Alfonso J. Rodriguez-Morales, Jin Hui Jan 2020

Biosafety And Biosecurity Approaches To Restrain/Contain And Counter Sars-Cov-2/Covid-19 Pandemic: A Rapid-Review, Tauseef Ahmad, Haroon Haroon, Kuldeep Dhama, Khan Sharun, Fazal Mehmood Khan, Irfan Ahmed, Ruchi Tiwari, Taha Hussein Musa, Muhammad Khan, D. Katterine Bonilla-Aldana, Alfonso J. Rodriguez-Morales, Jin Hui

Turkish Journal of Biology

Emergence and reemergence of infectious diseases pose significant public health risks that are continuously haunting human civilization in the past several decades. Such emerging pathogens should be considered as a high threat to humans, animals, and environmental health. The year 2020 was welcomed by another significant virus from family Coronaviridae called severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) that caused the coronavirus disease 2019 (COVID-19). The disease was first reported in the city of Wuhan, Hubei province, China. Within a short time, this disease attained the status of the Public Health Emergency of International Concern. Presently, COVID-19 has spread to …


Phylogenetic Analysis Of Sars-Cov-2 Genomes In Turkey, Ogün Adebali̇, Ayli̇n Bi̇rcan, Defne Çi̇rci̇, Burak İşlek, Zeynep Kilinç, Berkay Selçuk, Berk Turhan Jan 2020

Phylogenetic Analysis Of Sars-Cov-2 Genomes In Turkey, Ogün Adebali̇, Ayli̇n Bi̇rcan, Defne Çi̇rci̇, Burak İşlek, Zeynep Kilinç, Berkay Selçuk, Berk Turhan

Turkish Journal of Biology

COVID-19 has effectively spread worldwide. As of May 2020, Turkey is among the top ten countries with the most cases. A comprehensive genomic characterization of the virus isolates in Turkey is yet to be carried out. Here, we built a phylogenetic tree with globally obtained 15,277 severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) genomes. We identified the subtypes based on the phylogenetic clustering in comparison with the previously annotated classifications. We performed a phylogenetic analysis of the first 30 SARS-CoV-2 genomes isolated and sequenced in Turkey. We suggest that the first introduction of the virus to the country is earlier …


An Updated Analysis Of Variations In Sars-Cov-2 Genome, Osman Mutluhan Uğurel, Oğuz Ata, Di̇lek Balik Jan 2020

An Updated Analysis Of Variations In Sars-Cov-2 Genome, Osman Mutluhan Uğurel, Oğuz Ata, Di̇lek Balik

Turkish Journal of Biology

A novel pathogen, named SARS-CoV-2, has caused an unprecedented worldwide pandemic in the first half of 2020. As the SARS-CoV-2 genome sequences have become available, one of the important focus of scientists has become tracking variations in the viral genome. In this study, 30366 SARS-CoV-2 isolate genomes were aligned using the software developed by our group (ODOTool) and 11 variations in SARS-CoV-2 genome over 10% of whole isolates were discussed. Results indicated that, frequency rates of these 11 variations change between 3.56%-88.44 % and these rates differ greatly depending on the continents they have been reported. Despite some variations being …


Identification Of The Nucleotide Substitutions In 62 Sars-Cov-2 Sequences From Turkey, Ayşe Banu Demi̇r, Domenico Benvenuto, Yusuf Hakan Abacioğlu, Silvia Angeletti, Massimo Ciccozzi Jan 2020

Identification Of The Nucleotide Substitutions In 62 Sars-Cov-2 Sequences From Turkey, Ayşe Banu Demi̇r, Domenico Benvenuto, Yusuf Hakan Abacioğlu, Silvia Angeletti, Massimo Ciccozzi

Turkish Journal of Biology

A previously unknown coronavirus, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has been shown to cause coronavirus disease 2019 (COVID-19) pandemic. The first case of COVID-19 in Turkey has been declared in March 11th, 2020 and from there on, more than 150,000 people in the country have been diagnosed with the disease. In this study, 62 viral sequences from Turkey, which have been uploaded to GISAID database, were analyzed by means of their nucleotide substitutions in comparison to the reference SARS-CoV-2 genome from Wuhan. Our results indicate that the viral isolates from Turkey harbor some common mutations with the viral …


An Insight Into The Epitope-Based Peptide Vaccine Design Strategy And Studies Against Covid-19, Murat Topuzoğullari, Tayfun Acar, Peli̇n Peli̇t Arayici, Burcu Uçar, Erennur Uğurel, Emrah Şefi̇k Abamor, Tüli̇n Arasoğlu, Di̇lek Balik, Serap Derman Jan 2020

An Insight Into The Epitope-Based Peptide Vaccine Design Strategy And Studies Against Covid-19, Murat Topuzoğullari, Tayfun Acar, Peli̇n Peli̇t Arayici, Burcu Uçar, Erennur Uğurel, Emrah Şefi̇k Abamor, Tüli̇n Arasoğlu, Di̇lek Balik, Serap Derman

Turkish Journal of Biology

SARS-CoV-2 is a new member of the coronavirus family and caused the pandemic of coronavirus disease 2019 (COVID-19) in 2020. It is crucial to design and produce an effective vaccine for the prevention of rapid transmission and possible deaths wcaused by the disease. Although intensive work and research are being carried out all over the world to develop a vaccine, an effective and approved formulation that can prevent the infection and limit the outbreak has not been announced yet. Among all types of vaccines, epitope-based peptide vaccines outshine with their low-cost production, easy modification in the structure, and safety. In …


Sars-Cov-2 Neutralizing Antibody Development Strategies, Bertan Koray Balcioğlu, Meli̇s Deni̇zci̇ Öncü, Hasan Ümi̇t Öztürk, Fatima Yücel, Fi̇li̇z Kaya, Müge Serhatli, Hi̇vda Ülbeği̇ Polat, Şaban Teki̇n, Ayli̇n Özdemi̇r Bahadir Jan 2020

Sars-Cov-2 Neutralizing Antibody Development Strategies, Bertan Koray Balcioğlu, Meli̇s Deni̇zci̇ Öncü, Hasan Ümi̇t Öztürk, Fatima Yücel, Fi̇li̇z Kaya, Müge Serhatli, Hi̇vda Ülbeği̇ Polat, Şaban Teki̇n, Ayli̇n Özdemi̇r Bahadir

Turkish Journal of Biology

In December 2019 a novel coronavirus was detected in Wuhan City of Hubei Province-China. Owing to a high rate of transmission from human to human, the new virus called SARS-CoV-2 differed from others by its unexpectedly rapid spread. The World Health Organization (WHO) described the most recent coronavirus epidemic as a global pandemic in March 2020. The virus spread triggered a health crisis (the COVID-19 disease) within three months, with socioeconomic implications. No approved targeted-therapies are available for COVID-19, yet. However, it is foreseen that antibody-based treatments may provide an immediate cure for patients. Current neutralizing antibody development studies primarily …


Covid-19: Current Knowledge, Disease Potential, Prevention And Clinical Advances, Aftab Alam, Mohd Faizan Siddiqui, Nikhat Imam, Rafat Ali, Mushtaque Mushtaque, Romana Ishrat Jan 2020

Covid-19: Current Knowledge, Disease Potential, Prevention And Clinical Advances, Aftab Alam, Mohd Faizan Siddiqui, Nikhat Imam, Rafat Ali, Mushtaque Mushtaque, Romana Ishrat

Turkish Journal of Biology

The top priority of any nation is to lead the nation towards prosperity, progress, and economic growth, confronting several challenges and concerns arisen from global situations. The sudden outbreak of any disease defies the health care systems and economy of nations. COVID-19 is one of the viral diseases which broke out in Wuhan city of China in 2019. COVID-19 outbreak intermittently prevailed all over the world. It exposes the fragility of the established health care systems across the world in spite of comprising modern science and technology. Unfortunately, there is no chemotherapeutic agent in the regimen of antiviral drugs or …


Sars-Cov-2 Isolation And Propagation From Turkish Covid-19 Patients, Ci̇han Taştan, Bulut Yurtsever, Gözde Karakuş, Derya Di̇lek Kançaği, Sevda Demi̇r, Selen Abanuz, Utku Seyi̇s, Mülazi̇m Yildirim, Recai̇ Kuzay, Ömer Eli̇bol, Serap Arbak, Merve Açikel Elmas, Selçuk Bi̇rdoğan, Osman Uğur Sezerman, Ayşe Sesi̇n Kocagöz Jan 2020

Sars-Cov-2 Isolation And Propagation From Turkish Covid-19 Patients, Ci̇han Taştan, Bulut Yurtsever, Gözde Karakuş, Derya Di̇lek Kançaği, Sevda Demi̇r, Selen Abanuz, Utku Seyi̇s, Mülazi̇m Yildirim, Recai̇ Kuzay, Ömer Eli̇bol, Serap Arbak, Merve Açikel Elmas, Selçuk Bi̇rdoğan, Osman Uğur Sezerman, Ayşe Sesi̇n Kocagöz

Turkish Journal of Biology

The novel coronavirus pneumonia, which was named later as coronavirus disease 2019 (COVID-19), is caused by the severe acute respiratory syndrome coronavirus 2, namely SARS-CoV-2. It is a positive-strand RNA virus that is the seventh coronavirus known to infect humans. The COVID-19 outbreak presents enormous challenges for global health behind the pandemic outbreak. The first diagnosed patient in Turkey has been reported by the Republic of Turkey Ministry of Health on March 11, 2020. In May, over 150,000 cases in Turkey, and 5.5 million cases around the world have been declared. Due to the urgent need for a vaccine and …


Gut-Lung Axis And Dysbiosis In Covid-19, Büşra Aktaş, Belma Aslim Jan 2020

Gut-Lung Axis And Dysbiosis In Covid-19, Büşra Aktaş, Belma Aslim

Turkish Journal of Biology

COVID-19, a novel infectious disease, caused by SARS-CoV-2, affected millions of people around the world with a high mortality rate. Although SARS-CoV-2 mainly causes lung infection, gastrointestinal symptoms described in COVID-19 patients and detection of the viral RNA in feces of infected patients drove attentions to a possible fecal-oral transmission route of SARS-CoV-2. However, not only the viral RNA but also the infectious viral particles are required for the viral infection and no proof has been demonstrated the transmission of the infectious virus particles via the fecal-oral route yet. Growing evidence indicates the crosstalk between gut microbiota and lung, that …


Mesenchymal Stem Cell Derived Extracellular Vesicles: Promising Immunomodulators Against Autoimmune, Autoinflammatory Disorders And Sars-Cov-2 Infection, Ozlem Bulut, İhsan Gürsel Jan 2020

Mesenchymal Stem Cell Derived Extracellular Vesicles: Promising Immunomodulators Against Autoimmune, Autoinflammatory Disorders And Sars-Cov-2 Infection, Ozlem Bulut, İhsan Gürsel

Turkish Journal of Biology

Discovery of novel and broad-acting immunomodulators is of critical importance for the prevention and treatment of disorders occurring due to overexuberant immune responseincluding SARS-CoV-2 triggered cytokine storm leading to lung pathology and mortality during the ongoing viral pandemic. Mesenchymal stem/stromal cells (MSCs), highly regarded for their regenerative capacities, also possessesremarkable immunoregulatory functions affecting all types of innate and adaptive immune cells. Owing to that, MSCs have been heavily investigated in clinic for the treatment of autoimmune and inflammatory diseases along with transplant rejection. Extensive research in the last decaderevealed that MSCs carry out most of their functions through paracrine factors …