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2022

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Hydroxychloroquine Induces Endothelium-Dependent And Endothelium-Independent Relaxation Of Rat Aorta, Seyfullah Oktay Arslan, Muhammed Fati̇h Doğan, Sali̇ha Ayşenur Çam, Ibraheem Akram Omar, Fatma Uysal, Ali̇ Parlar, Ahmet Cenk Andaç, Oğuzhan Yildiz Jan 2022

Hydroxychloroquine Induces Endothelium-Dependent And Endothelium-Independent Relaxation Of Rat Aorta, Seyfullah Oktay Arslan, Muhammed Fati̇h Doğan, Sali̇ha Ayşenur Çam, Ibraheem Akram Omar, Fatma Uysal, Ali̇ Parlar, Ahmet Cenk Andaç, Oğuzhan Yildiz

Turkish Journal of Medical Sciences

No abstract provided.

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Presentation Characteristics And Clinical Outcome Of Patients With Giant Cell Arteritis Followed By A Single Center, Mert Öztaş, Hami̇t Özgül, Emi̇re Seyahi̇, Serdal Uğurlu Jan 2022

Presentation Characteristics And Clinical Outcome Of Patients With Giant Cell Arteritis Followed By A Single Center, Mert Öztaş, Hami̇t Özgül, Emi̇re Seyahi̇, Serdal Uğurlu

Turkish Journal of Medical Sciences

Background/aim: Giant cell arteritis (GCA) is a large vessel vasculitis that may cause significant morbidity in the elderly population. We aimed to evaluate presentation characteristics, treatment, and outcome in a cohort of patients with GCA diagnosed and followed in a single center. Materials and methods: A retrospective chart review revealed 84 (41 M/43 F) registered patients diagnosed with GCA between 1990 and 2020. Clinical features at presentation and follow-up, radiographical imaging, temporal artery biopsy (TAB), and laboratory findings were retrieved from digital medical records or hard-copy patient files. Of these, 33 patients- follow-up period was less than 12 months; hence, …

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Pd-L1 And Ebv Lmp1 Expressions In Classic Hodgkin Lymphomas And Its Correlation With Clinicopathological Parameters And Prognosis, Süleyman Özdemi̇r, Özlem Ton, Fevzi̇ye Kabukcuoğlu Jan 2022

Pd-L1 And Ebv Lmp1 Expressions In Classic Hodgkin Lymphomas And Its Correlation With Clinicopathological Parameters And Prognosis, Süleyman Özdemi̇r, Özlem Ton, Fevzi̇ye Kabukcuoğlu

Turkish Journal of Medical Sciences

Background/aim: Programmed death pathway leads to T cell anergy. Wide range of malignancies take advantage of this pathway by programmed death-ligand 1 (PD-L1) expression either on neoplastic cells or on the nonneoplastic cells of tumour microenvironment. New therapeutic approaches have been directed against this pathway. We studied PD-L1 expression on both neoplastic Hodgkin and Reed-Sternberg (HRS) cells and cells of tumour microenvironment in classic Hodgkin lymphoma (CHL) patients and compared it with Ebstein-Barr virus (EBV) positivity, clinical data, and survival rates. Materials and methods: Lymph node excision materials of 56 CHL patients diagnosed between 2007 and 2017 were included in …

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Evaluation Of Cardiovascular Changes In Patients With Gastric Wall Fat Halo Sign, Ali̇ Küpeli̇, Eser Bulut, Edhem Ünver, Gürkan Danişan Jan 2022

Evaluation Of Cardiovascular Changes In Patients With Gastric Wall Fat Halo Sign, Ali̇ Küpeli̇, Eser Bulut, Edhem Ünver, Gürkan Danişan

Turkish Journal of Medical Sciences

Background/aim: This study aims to investigate the relationship between gastric wall fat halo sign and potentially associated cardiovascular disease (CVD) in thoracic computed tomography (CT). Materials and methods: Between October 2020 and January 2021, 62 patients with gastric wall fat halo sign and 62 controls were evaluated with thorax CT. Patient's height, weight, body mass index (BMI), sex, age, comorbidities, laboratory parameters, diameters of cardiac axes, aorta and pulmonary artery; aorta and coronary artery calcium scores were recorded for the two groups. Results: No significant differences were found in sex, age, height, body weight or BMI between the two groups …

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A Combination Of Q-Tof Lc/Ms And Lc-Ms/Ms Based Metabolomics In Pediatric-Onset Multiple Sclerosis Demonstrates Potential Biomarkers For Unclassified Patients, İsmai̇l Solmaz, Ozan Kaplan, Mustafa Çelebi̇er, İnci̇lay Lay, Fatma Banu Anlar Jan 2022

A Combination Of Q-Tof Lc/Ms And Lc-Ms/Ms Based Metabolomics In Pediatric-Onset Multiple Sclerosis Demonstrates Potential Biomarkers For Unclassified Patients, İsmai̇l Solmaz, Ozan Kaplan, Mustafa Çelebi̇er, İnci̇lay Lay, Fatma Banu Anlar

Turkish Journal of Medical Sciences

Background/aim: Metabolomics has the potential to provide putative biomarkers and insights into the pathophysiology and diagnosis of pediatric multiple sclerosis (pMS), which is an inflammatory demyelinating disorder of the central nervous system with a broad spectrum of clinical manifestations. In this study, we aimed to investigate serum metabolomics in pMS to help elucidate the pathophysiology of MS. Materials and methods: An untargeted approach was applied using the quadrupole time-of-flight liquid chromatography/mass spectrometry (Q-TOF LC/MS) method to study plasma metabolites in patients with pMS (n = 33), patients with unclassified central nervous system demyelinating diseases (n = 6), and age-matched healthy …

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Frequency Of Alpha-1 Antitrypsin Deficiency And Unexpected Results In Copd Patients In Turkey; Rare Variants Are Common, Mustafa Çörtük, Bariş Demi̇rkol, Meli̇h Akay Arslan, Umut İlhan, Yunus Emre Kalkan, Demet Turan, Şule Gül, Hali̇t Çinarka, Kürşad Nuri̇ Baydi̇li̇, Erdoğan Çeti̇nkaya Jan 2022

Frequency Of Alpha-1 Antitrypsin Deficiency And Unexpected Results In Copd Patients In Turkey; Rare Variants Are Common, Mustafa Çörtük, Bariş Demi̇rkol, Meli̇h Akay Arslan, Umut İlhan, Yunus Emre Kalkan, Demet Turan, Şule Gül, Hali̇t Çinarka, Kürşad Nuri̇ Baydi̇li̇, Erdoğan Çeti̇nkaya

Turkish Journal of Medical Sciences

Background/aim: Alpha-1 antitrypsin (?1-AT) is a protease inhibitor that is largely released from liver cells. It inhibits neutrophil elastase and its deficiency increases the risk of developing chronic obstructive pulmonary disease (COPD). The frequency of ?1-AT deficiency has been reported with different prevalence rates in different parts of the world. The most common ?1-AT variant causing ?1-AT deficiency is the Pi*Z allele. In this study, we aimed to determine the frequency of the ?1-AT genotypic variant in COPD patients in our country. Materials and methods: In this study, 196 consecutive COPD patients admitted to our clinic were included. In addition …

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The Role Of Pericytes On The Efficacy Of Bevacizumab In Colorectal Cancer, Merve Besler, Fatma Sena Dost, Fi̇li̇z Çay Şenler, Bi̇lge Ayça Kirmizi, Berna Savaş, Hakan Akbulut Jan 2022

The Role Of Pericytes On The Efficacy Of Bevacizumab In Colorectal Cancer, Merve Besler, Fatma Sena Dost, Fi̇li̇z Çay Şenler, Bi̇lge Ayça Kirmizi, Berna Savaş, Hakan Akbulut

Turkish Journal of Medical Sciences

Background/aim: Pericytes are mesenchymal cells surrounding capillary vessels and are known to play an essential role in tumor angiogenesis. Chondroitin sulfate proteoglycan 4 (CSPG4) is a cell surface proteoglycan and its release from pericytes and vascular smooth muscle cells is very important in tumor angiogenesis. Bevacizumab, which is a monoclonal antibody frequently used in the treatment of metastatic colorectal cancer, binds to the ligand of vascular endothelial growth factor A (VEGFA) and inhibits tumor angiogenesis. However, no reliable biomarker for predicting patients that will show a good response to this therapy has been established yet. In this study, we aimed …

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Is Microcystic, Elongated, And Fragmented Pattern Of Myometrial Invasion In Endometrioid Endometrial Carcinoma Associated With Survival?, Sultan Deni̇z Altindağ, Seyran Yi̇ği̇t, Serhat Şen Jan 2022

Is Microcystic, Elongated, And Fragmented Pattern Of Myometrial Invasion In Endometrioid Endometrial Carcinoma Associated With Survival?, Sultan Deni̇z Altindağ, Seyran Yi̇ği̇t, Serhat Şen

Turkish Journal of Medical Sciences

Background/aim: Microcystic, elongated, and fragmented (MELF) pattern is one of the myometrial invasion patterns in endometrioid endometrial carcinoma (EEC), and it has been associated with poor prognostic parameters, especially lymphovascular space invasion (LVSI) and lymph node metastasis (LNM). This study aims to represent the frequency of MELF pattern in EEC and the relationship between MELF pattern with clinicopathological parameters, overall survival (OS), and disease-free survival (DFS). Materials and methods: In this retrospective cohort study, we examined 233 patients with EEC diagnoses with the result of a total hysterectomy and bilateral salpingo-oophorectomy between 2009 and 2014. The association of MELF pattern …

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The Survival Outcomes And Prognostic Factors Of Hepatocellular Carcinoma Among Type 2 Diabetes Patients: A Two-Centre Retrospective Cohort Study, Noor Atika Azit, Shahnorbanun Sahran, Voon Meng Leow, Manisekar K. Subramaniam, Suryati Mokhtar, Azmawati Mohammed Nawi Jan 2022

The Survival Outcomes And Prognostic Factors Of Hepatocellular Carcinoma Among Type 2 Diabetes Patients: A Two-Centre Retrospective Cohort Study, Noor Atika Azit, Shahnorbanun Sahran, Voon Meng Leow, Manisekar K. Subramaniam, Suryati Mokhtar, Azmawati Mohammed Nawi

Turkish Journal of Medical Sciences

Background/aim: To determine the survival outcomes and prognostic factors associated with hepatocellular carcinoma (HCC) survival in type 2 diabetes (T2D) patients. Materials and methods: This was a retrospective cohort study involving two hepatobiliary centres from January 1, 2012, to June 30, 2018. Medical records were analysed for sociodemographic, clinical characteristics, laboratory testing, and HCC treatment information. Survival outcomes were examined using the Kaplan?Meier and log-rank test. Prognostic factors were determined using multivariate Cox regression. Results: A total of 212 patients were included in the study. The median survival time was 22 months. The 1-, 3-, and 5-year survival rates were …

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Evaluation Of The Effect Of Hyperchloremia On The Prognosis And Mortality Of Medical Intensive Care Patients: A Single-Center Study, Habi̇p Yilmaz, Başak Çakir Güney Jan 2022

Evaluation Of The Effect Of Hyperchloremia On The Prognosis And Mortality Of Medical Intensive Care Patients: A Single-Center Study, Habi̇p Yilmaz, Başak Çakir Güney

Turkish Journal of Medical Sciences

Background/aim: While chloride (Cl) is the most abundant anion in the serum, it is unfortunately one of the most commonly disregarded laboratory test results routinely drawn upon admission into the medical intensive care unit (MICU). We aimed to investigate the relation between in-hospital mortality, different pathologies requiring admission to the MICU, serum Cl levels, and other biochemical tests in a tertiary center. Materials and methods: The prospective study included data from 373 patients admitted to the ICU of a tertiary care center between 2017 and 2019. Data of patients under 18, pregnant patients or patients who were in the MICU …

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Investigation Of Ceftazidime-Avibactam Susceptibility In Clinical Isolates Of Gram-Negative Bacteria, Ridvan Dumlu, Neval Yurttutan Uyar, Meltem Ayaş, Ni̇lay Aksoy, Nur Öztürk, Ayşe Sesi̇n Kocagöz Jan 2022

Investigation Of Ceftazidime-Avibactam Susceptibility In Clinical Isolates Of Gram-Negative Bacteria, Ridvan Dumlu, Neval Yurttutan Uyar, Meltem Ayaş, Ni̇lay Aksoy, Nur Öztürk, Ayşe Sesi̇n Kocagöz

Turkish Journal of Medical Sciences

Background/aim: Our study investigated the susceptibility rate of ceftazidime-avibactam and the risk factors associated with its resistance by analyzing gram-negative bacteria isolated from various patient samples. Materials and methods: Between March and November 2020, 1119 gram-negative bacteria strains were isolated from patient samples in Acıbadem Healthcare Group hospitals; ceftazidime-avibactam susceptibility results were evaluated using a 10/4µg (Oxoid, UK) disc and evaluated according to Eucast 2020 recommendations. Patient and isolate characteristics that could be risk factors were retrospectively investigated and statistically analyzed using SPSS 25.0. Results: Male patients made up 52% (n = 581) of the study's total patient population, and …

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Low Handgrip Strength Is Associated With Diabetic Foot Disease In Geriatric Patients With Type 2 Diabetes, Eren İmre, Neşe Koçakgöl, Erdi̇ İmre Jan 2022

Low Handgrip Strength Is Associated With Diabetic Foot Disease In Geriatric Patients With Type 2 Diabetes, Eren İmre, Neşe Koçakgöl, Erdi̇ İmre

Turkish Journal of Medical Sciences

Background/aim: This study aims to reveal the prevalence of low handgrip strength in older patients with type 2 diabetes who have diabetic foot disease and to assess the association of handgrip strength with diabetic foot disease in older patients with type 2 diabetes. Materials and methods: Eighty-nine geriatric patients with diabetic foot ulcers and 69 patients without diabetic foot ulcers who presented to the endocrinology outpatient clinic between August 2020 and November 2021 were included in the study. The exclusion criteria were the usage of steroids, stroke-induced quadriplegia, myopathy, disability, hemodialysis treatment, type 1 diabetes, patients under 65 years of …

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Clinicoradiological Evaluation Of Oxidative Stress Activity In Acute Cerebral Infarction In The First 24 H And The Qualitative Importance Of Dysfunctional Hdl In Stroke, Esra Demi̇r Ünal, Gönül Vural, Funda Eren, Sali̇m Neşeli̇oğlu, Özcan Erel Jan 2022

Clinicoradiological Evaluation Of Oxidative Stress Activity In Acute Cerebral Infarction In The First 24 H And The Qualitative Importance Of Dysfunctional Hdl In Stroke, Esra Demi̇r Ünal, Gönül Vural, Funda Eren, Sali̇m Neşeli̇oğlu, Özcan Erel

Turkish Journal of Medical Sciences

Background/aim: Acute cerebral infarction (ACI) occurs as a result of instant disruption of vascular flow that causes disbalance between oxidative/antioxidative activity. We examined the relationship of serum neuro-oxidative stress parameters with stroke severity and infarct volume in ACI and emphasized the qualitative importance of high-density lipoprotein (HDL) on its relationship with myeloperoxidase (MPO) and paraoxonase-1 (PON1) in the acute period of stroke. Materials and methods: One hundred ACI patients applied within the first 24 h and 50 healthy volunteers were included. The patient group was evaluated with demographic data (including arrival serum biochemical assessment), clinical disability scores, infarct volume, serum …

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Central Vein Sign: Comparison Of Multiple Sclerosis And Leukoaraiosis, Hüseyi̇n Gökhan Yavaş, Ergi̇n Sağtaş Jan 2022

Central Vein Sign: Comparison Of Multiple Sclerosis And Leukoaraiosis, Hüseyi̇n Gökhan Yavaş, Ergi̇n Sağtaş

Turkish Journal of Medical Sciences

Background/aim: Leukoaraiosis produces white matter lesions (WML) similar to multiple sclerosis (MS) on brain magnetic resonance imaging (MRI), and the distinction between these two conditions is difficult radiologically. This study aimed to investigate the role of the central vein sign (CVS) in susceptibility-weighted imaging (SWI) sequence in distinguishing MS lesions from leukoaraiosis lesions in Turkish population. Materials and methods: In this prospective study, axial SWI and sagittal three-dimensional fluid-attenuated inversion recovery (3DFLAIR) were obtained in 374 consecutive patients. The study consisted of 169 (89 MS patients, 80 patients with leukoaraiosis) patients according to the inclusion and exclusion criteria. Two observers …

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Possessing Intangibles, João Marinotti Jan 2022

Possessing Intangibles, João Marinotti

Articles by Maurer Faculty

The concept of possession is currently considered inapplicable to intangible assets, whether data, cryptocurrency, or NFTs. Under this view, intangible assets categorically fall outside the purview of property law’s foundational doctrines. Such sweeping conclusions stem from a misunderstanding of the role of possession in property law. This Article refutes the idea that possession constitutes—or even requires—physical control by distinguishing possession from another foundational concept, that of thinghood. It highlights possession’s unique purpose within the property process: conveying the status of in rem claims. In property law, the concept of possession conveys to third parties the allocation of property rights and …

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Bio-Clinical Evaluation Of Collateral Score In Acute Middle Cerebral Artery Occlusion, Esra Demi̇r, Hesna Bektaş, Hasan Bayindir, Oğuzhan Kurşun Jan 2022

Bio-Clinical Evaluation Of Collateral Score In Acute Middle Cerebral Artery Occlusion, Esra Demi̇r, Hesna Bektaş, Hasan Bayindir, Oğuzhan Kurşun

Turkish Journal of Medical Sciences

Background/aim: Acute ischemic stroke (AIS) is characterized as a neurological deficit owing to an acute focal damage to the brain by cerebral infarction. A collateral score is the most significant factor evaluating the prognosis of AIS, its relationship with demographic data, serum biochemical parameters, and clinical disability in this field. Materials and methods: We conducted a single-center retrospective study with 100 patients with AIS within the first 6 h of ischemic stroke. Data for consecutive AIS patients were collected from February 2019 to May 2020. The collateral score was assessed by using developed scoring systems defined by Maas et al. …

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Predictive Values Of Carotid High-Resolution Magnetic Resonance Imaging For Large Embolus Shedding In Carotid Artery Stenting, Xingyue Zheng, Erling Wang, Xiaoqian Guo, Chan Gu, Zhongrui Yan, Peng Yan, Shan Li, Chuanqiang Qu, Jifeng Li, Xiyun Ruan, Qinjian Sun Jan 2022

Predictive Values Of Carotid High-Resolution Magnetic Resonance Imaging For Large Embolus Shedding In Carotid Artery Stenting, Xingyue Zheng, Erling Wang, Xiaoqian Guo, Chan Gu, Zhongrui Yan, Peng Yan, Shan Li, Chuanqiang Qu, Jifeng Li, Xiyun Ruan, Qinjian Sun

Turkish Journal of Medical Sciences

Background/aim: Embolus shedding is one of the important complications in carotid artery stenting (CAS). Carotid high-resolution magnetic resonance imaging (HR-MRI) is often used to directly reflect important biological characteristics, such as plaque size and composition, as well as the structure of the carotid artery wall. The aim of this study was to investigate the predictive values of carotid HR-MRI for large embolus shedding in CAS. Materials and methods: In total, 195 patients with carotid stenosis were enrolled. Preoperative carotid HR-MRI was performed to define the nature of the carotid plaques. CAS was performed in all patients, and intraoperative embolic protection …

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The Effect Of Covid-19 Pandemic In A Large Series Of Patients With Takayasu Arteritis, Ali̇ Karakaş, Tuba Yüce İnel, Fatoş Önen, İsmai̇l Sari Jan 2022

The Effect Of Covid-19 Pandemic In A Large Series Of Patients With Takayasu Arteritis, Ali̇ Karakaş, Tuba Yüce İnel, Fatoş Önen, İsmai̇l Sari

Turkish Journal of Medical Sciences

Background/aim: Patients with inflammatory rheumatic diseases faced several challenges during the COVID-19 pandemic. Uncertainties such as the lack of evidence regarding the use of immunosuppressive (IS) therapies and deferred patient care because of limited health resources affected negatively on many aspects of treatment decisions and routine follow-up of the patients. In this study, we aimed to investigate the prevalence and severity of SARS-CoV-2 infection, the impact of the pandemic on delays in routine clinical follow-up, changes in IS treatment, and COVID-19 vaccination status of patients with Takayasu arteritis (TAK). Materials and methods: The study was performed between July and September …

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Investigation Of Mirna And Cytokine Expressions In Latent Tuberculosis Infection And Active Tuberculosis, Cengi̇z Çavuşoğlu, Muhsi̇n Özgür Çoğulu, Asude Durmaz, Zehra Cengi̇si̇z, Fethi̇ye Ferda Yilmaz, Mehmet Sezai̇ Taşbakan, Meltem Taşbakan, Cumhur Gündüz, Can Bi̇çmen, Onur Karaman, Hasan Taşlidere, Haluk Akin, Tülay Akarca, Mustafa Şevket Dereli̇ Jan 2022

Investigation Of Mirna And Cytokine Expressions In Latent Tuberculosis Infection And Active Tuberculosis, Cengi̇z Çavuşoğlu, Muhsi̇n Özgür Çoğulu, Asude Durmaz, Zehra Cengi̇si̇z, Fethi̇ye Ferda Yilmaz, Mehmet Sezai̇ Taşbakan, Meltem Taşbakan, Cumhur Gündüz, Can Bi̇çmen, Onur Karaman, Hasan Taşlidere, Haluk Akin, Tülay Akarca, Mustafa Şevket Dereli̇

Turkish Journal of Medical Sciences

No abstract provided.

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Assessment Of Subclinical Cardiovascular Alterations In Non-Functioning Adrenal Incidentalomas, Bülent Can, Peli̇n Karaca Özer, Büşra Can, Özge Telci̇ Çaklili Jan 2022

Assessment Of Subclinical Cardiovascular Alterations In Non-Functioning Adrenal Incidentalomas, Bülent Can, Peli̇n Karaca Özer, Büşra Can, Özge Telci̇ Çaklili

Turkish Journal of Medical Sciences

No abstract provided.

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Determination Of Mirna Expression Profile In Patients With Prostate Cancer And Benign Prostate Hyperplasia, Okan Sancer, Pinar Aslan Koşar, Muhammet Yusuf Tepebaşi, Osman Ergün, Murat Demi̇r, Ali̇m Koşar Jan 2022

Determination Of Mirna Expression Profile In Patients With Prostate Cancer And Benign Prostate Hyperplasia, Okan Sancer, Pinar Aslan Koşar, Muhammet Yusuf Tepebaşi, Osman Ergün, Murat Demi̇r, Ali̇m Koşar

Turkish Journal of Medical Sciences

No abstract provided.

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Navigating The Ethically Complex And Controversial World Of College Athletics: A Humanistic Leadership Approach To Student Athlete Well-Being, Johnette (Jay) Caulfield, Felissa K. Lee, Catharyn Baird Jan 2022

Navigating The Ethically Complex And Controversial World Of College Athletics: A Humanistic Leadership Approach To Student Athlete Well-Being, Johnette (Jay) Caulfield, Felissa K. Lee, Catharyn Baird

Management Faculty Research and Publications

The college athletics environment within the USA is ethically complex and often controversial. From an academic standpoint, athletes are often viewed as a privileged class receiving undue benefit. Yet closer inspection reveals that student athletes are at risk psychologically, physically, and intellectually in ways that undermine development and flourishing. This reality stands in troubling contrast to the prosocial, virtue-based goals expressed by university mission statements. Given the role of sport in many university business models, college athletics invites scrutiny from a business ethics standpoint. Using a humanistic leadership perspective (Pirson in: Humanistic management: protecting dignity and promoting well-being, Cambridge University …

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Genome-Wide Identification Of Wrky Transcription Factor Encoding Genes In Amborella Trichopoda Baill. (Amborellaceae), Bijaya Pradhan Jan 2022

Genome-Wide Identification Of Wrky Transcription Factor Encoding Genes In Amborella Trichopoda Baill. (Amborellaceae), Bijaya Pradhan

Electronic Theses and Dissertations

WRKY transcription factors (TFs) are DNA-binding proteins, which play important roles in managing plant stresses and regulating growth and development processes. The WRKY TF family has expanded significantly through genome/gene duplications in the plant evolutionary process. Although the WRKY TFs have been identified in hundreds of plant species, they are yet to be identified in Amborella trichopoda, a species that represents the most basal group of Angiosperms. The main objectives of this study were to conduct genome-wide identification of the WRKY gene family in A. trichopoda and to assess their homologs in Angiosperms. In this study, we identified …

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Effects Of Conservation Management Practices On Soil Health And Crop Yields In Eastern South Dakota, Alex Mclain Jan 2022

Effects Of Conservation Management Practices On Soil Health And Crop Yields In Eastern South Dakota, Alex Mclain

Electronic Theses and Dissertations

Conservation management practice adoption on agricultural land has increased in recent years due to increasing public and private investment. The anticipated impact of increasing conservation management practice adoption are reduced greenhouse gas emissions and improved soil, water, and air quality. Understanding how these conservation management practices affect agricultural producers economically is vital to properly incentivize these practices. The existing literature on how conservation management practices affect soil health and crop yields is mixed and generally has been conducted on experimental research stations. These studies may not fully account for the on-farm effects of conservation management practices. The objectives of this …

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E. Coli Persister Cell Survival And Rhizobia Attachment To Soybean Roots, Tanim Islam Jan 2022

E. Coli Persister Cell Survival And Rhizobia Attachment To Soybean Roots, Tanim Islam

Electronic Theses and Dissertations

The theme of this thesis revolves around how bacteria respond and thrive during stress. Chapters 1-3 are about how bacteria deal with life-threatening antibiotics. Chapter 4 covers new research on how bacteria can move from a stressful individual lifestyle (free-living bacteria) to initiating a symbiotic relationship with a plant (a less stressful lifestyle). In Chapter 1, I briefly summarize the current state of knowledge in the field of antibiotic resistance and persistence. In Chapter 2, I add to this knowledge by providing new insights into several antibiotics' potency and exploring the antibiotic Eagle effect. In Chapter 3, I use pyruvate …

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Identifying Adp-Ribosylation As The Biochemical Signal That Marks Dna-Protein Crosslinks For Sprtn-Dependent Proteolysis, Katelyn Hurley Jan 2022

Identifying Adp-Ribosylation As The Biochemical Signal That Marks Dna-Protein Crosslinks For Sprtn-Dependent Proteolysis, Katelyn Hurley

Electronic Theses and Dissertations

DNA-protein crosslinks (DPCs) form when proteins covalently attach to DNA. It is estimated that hundreds of DPCs form in our cells each day. Because these lesions are cytotoxic, mammalian cells have evolved multiple intricate repair systems to remove DPCs and restore genome integrity. One mechanism mammalian cells rely on for DPC repair is direct proteolysis by the metalloprotease, SPRTN. While it is known that SPRTN degrades a heterogenous array of DPCs, including both naturally occurring and chemically induced, how SPRTN selects DPCs amongst chromatin-associated proteins remains unknown. Our main objective is to determine how DPC repair is regulated. In Chapter …

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Assessment Of Aged Woodchip Bioreactor Physical And Hydraulic Properties, Shelby Duncan Jan 2022

Assessment Of Aged Woodchip Bioreactor Physical And Hydraulic Properties, Shelby Duncan

Electronic Theses and Dissertations

Denitrifying woodchip bioreactors are a critical tool for mitigating nitrate loading to downstream water bodies. The properties of the woodchip are a key factor in the design of the bioreactor which are usually designed to optimize that retention time of the water being treated. Retention time is affected by active flow volume, porosity, and flow rate. As a bioreactor ages, the carbon material will break down and, in some cases, sedimentation will occur within the bioreactor. Both processes will affect the porosity and hydraulic performance of the bioreactor. When flow through the bioreactor is significantly different than the original design, …

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Comparison Of International Classification Of Orofacial Pain (Icop) And Diagnostic Criteria For Temporomandibular Disorders (Dc/Tmd) Algorithms For Diagnosing Myofascial Orofacial Pain, Thi Thu Hang Phung Jan 2022

Comparison Of International Classification Of Orofacial Pain (Icop) And Diagnostic Criteria For Temporomandibular Disorders (Dc/Tmd) Algorithms For Diagnosing Myofascial Orofacial Pain, Thi Thu Hang Phung

Chulalongkorn University Theses and Dissertations (Chula ETD)

The International Classification of Orofacial Pain (ICOP) is a new classification system for orofacial pains, which was published in February 2020. However, this clinical diagnostic criteria has not been validated or tested to be reliable for diagnosing myofascial orofacial pain (MOP). This study aimed to determine whether the ICOP diagnostic algorithm can effectively identify MOP when compared with the gold standard, Diagnostic Criteria for Temporomandibular Disorders (DC/TMD) algorithm. This retrospective cross-sectional study constructed the diagnostic algorithm from the ICOP and the DC/TMD criteria. The clinical data of MOP patients was extracted from clinical charts in the Occlusion and Orofacial Pain …

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ตัวกรองชีวภาพจุลสาหร่าย-แบคทีเรียที่มีชีวิตสําหรับการนํากลับสารอาหารทางการเกษตรจากน้ำเสียสังเคราะห์, ชลัมพล จันทร์พุ่ม Jan 2022

ตัวกรองชีวภาพจุลสาหร่าย-แบคทีเรียที่มีชีวิตสําหรับการนํากลับสารอาหารทางการเกษตรจากน้ำเสียสังเคราะห์, ชลัมพล จันทร์พุ่ม

Chulalongkorn University Theses and Dissertations (Chula ETD)

ปัจจุบันน้ำเสียกลายเป็นปัญหาใหญ่ที่ผู้คนต้องเผชิญในชีวิตประจำวัน แหล่งน้ำเสียประมาณ 70% มาจากน้ำเสียครัวเรือน ซึ่งมีสารประกอบไนโตรเจน (N) และฟอสฟอรัส (P) ที่มีความเข้มข้นสูง แต่กลับไม่ได้นำมาใช้ให้เกิดประโยชน์ งานวิจัยนี้จึงขอเสนอการพัฒนาตัวกรองชีวภาพที่มีชีวิตแบบจุลินทรีย์ผสมระหว่างจุลสาหร่ายและแบคทีเรียที่ส่งเสริมการเจริญเติบโตของพืชในการบำบัดน้ำเสียสังเคราะห์เพื่อศึกษาประสิทธิภาพในการกำจัดสารประกอบ N P และค่าความต้องการออกซิเจนทางเคมี (COD) จากน้ำเสียสังเคราะห์ระหว่างระบบแขวนลอยและตัวกรองชีวภาพที่มีชีวิต ตัวกรองชีวภาพที่มีชีวิตได้รับการพัฒนาโดยใช้เทคนิคการตรึงเซลล์ด้วยสารยึดเกาะบนพื้นผิวของผ้าฝ้ายที่ใช้เป็นวัสดุรองรับ จากการทดลองพบว่าสารยึดเกาะกัวร์กัม/คาราจีแนน (GG/CG) แสดงเปอร์เซ็นต์ความเสื่อมสภาพน้อยกว่า 5 % ซึ่งต่ำกว่าสารยึดเกาะอื่น ๆ และไม่เป็นพิษต่อเซลล์ หลังจากการบำบัดน้ำเสียสังเคราะห์เป็นเวลา 7 วัน พบว่าระบบตัวกรองชีวภาพที่มีชีวิตมีประสิทธิภาพการกำจัดสารอาหารและ COD สูงกว่าระบบแขวนลอย โดยเฉพาะอย่างยิ่งตัวกรองชีวภาพที่มีชีวิตในอัตราส่วนการผสม 3:1 ของจุลสาหร่าย Chlorella sp. และแบคทีเรีย Bacillus subtilis TISTR1415 ที่ตรึงด้วยสารยึดเกาะ GG/CG มีประสิทธิภาพในการกำจัด NH4+ PO43- และ COD สูงสุดมากถึง 91.81 % 99.44 % และ 83.15 % ในขณะที่ระบบแขวนลอยแสดงประสิทธิภาพในการกำจัดเพียงแค่ 56.75 % 58.71 % และ 69.57 % ตามลำดับ นอกจากนี้ ค่า pH ในระบบตัวกรองชีวภาพที่มีชีวิต (จาก 8.81 เหลือ 7.26) ลดลงมากกว่าระบบแขวนลอย (จาก 8.81 เหลือ 8.13)

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A Novel Crispr/Cas Gene Editing System For Plants Which Bypasses Genetic Transformation And Tissue Culture, Aastha Acharya Jan 2022

A Novel Crispr/Cas Gene Editing System For Plants Which Bypasses Genetic Transformation And Tissue Culture, Aastha Acharya

Electronic Theses and Dissertations

CRISPR/Cas system is a powerful gene-editing tool that has revolutionized gene editing in many ways. However, the current delivery methods for using CRISPR/Cas system inn plants have some drawbacks that have greatly limited their routine application in plant research and improvement. Specifically,, the methods heavily rely on either genetic transformation for delivering Cas and/or its gRNA coding sequences into the targeted cells or tissue culture, or both for recovering the whole edited plants. To overcome these drawbacks, we have developed a simple, easy to use yet effective system for CRISPR/Cas gene editing in plants that can bypass genetic transformation and …

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