Medical Sciences Commons^™

ค่าทำนายผลลบของการตรวจหาอินเตอร์เฟียรอนแกมมาโดยวีธีอิไลสปอทในการวินิจฉัยการแพ้ยาต้านวัณโรค, อธิษฐ์ วุฒิสารวัฒนา

Chulalongkorn University Theses and Dissertations (Chula ETD)

ที่มา: การรักษาวัณโรคด้วยยามีโอกาสแพ้ยาสูง ในปัจจุบันยังไม่มีรายงานข้อมูลในการตรวจอิไลสปอทในการช่วยวินิจฉัยแพ้ยาในกลุ่มนี้ วัตถุประสงค์: เพื่อหาค่าทำนายผลลบของการตรวจหาอินเตอร์เฟียรอนแกมมาโดยวีธีอิไลสปอทในการวินิจฉัยการแพ้ยาต้านวัณโรค วิธีการศึกษา: เก็บข้อมูลจากเวชระเบียนของผู้ป่วยทั้งหมดที่ได้ส่งตรวจการแพ้ยาโดยวิธีอิไลสปอท จากสาขาวิชาโรคภูมิแพ้และภูมิคุ้มกัน ภาควิชาอายุรศาสตร์ คณะแพทย์ศาสตร์ จุฬาลงกรณ์มหาวิทยาลัย ระหว่างเดือนมกราคม 2555 - เมษายน 2562 จำนวน 29 ราย ผลการศึกษา: การตรวจหาอินเตอร์เฟียรอบแกมมาโดยวิธีอิไลสปอทในการวินิจฉัยการแพ้ยาวัณโรคให้ความไวร้อยละ 13.79 ความจำเพาะร้อยละ 96.77 ค่าทำนายผลบวกร้อยละ 66.67 ค่าทำนายผลลบร้อยละ 70.59 โดยการศึกษาไม่พบว่าปัจจัยอื่นๆ มีผลต่อการตรวจดังกล่าว สรุปผล: การตรวจหาอินเตอร์เฟียรอนแกมมาโดยวิธีอิไลสปอท ให้ค่าทำนายผลบวกและทำนายผลลบที่ไม่สูงมาก ผลการตรวจหากเป็นลบจะมีผลต่อการเปลี่ยนความน่าจะเป็นของการแพ้ยาเพียงเล็กน้อย แต่จะช่วยทำนายการแพ้ยาได้ดีขึ้นหากตรวจได้เป็นบวกในคนไข้กลุ่มแพ้ยารุนแรง อย่างไรก็ตามการศึกษานี้มีจำนวนข้อมูลที่ใช้ในการวิเคราะห์น้อยจึงยังอาจไม่พบความสัมพันธ์ที่อาจมีต่อผลการตรวจได้ ควรมีการศึกษาในระยะยาวเพื่อหาปัจจัยที่ช่วยให้การตรวจได้ประโยชน์มากที่สุด

The Incidence Of Antibiotic-Resistant Staphylococcus Spp. Colonization And Infection In Children And Adults With Atopic Dermatitis, Matchima Laowansiri

Chulalongkorn University Theses and Dissertations (Chula ETD)

Atopic dermatitis (AD) is an inflammatory skin disease characterized by chronic and recurrent eczematous rash. AD occurs in both children and adults, but children are more affected. An important aggravating factor is caused by Staphylococcus aureus (S. aureus) infection. Therefore, topical (beta-lactam, macrolides, clindamycin) and systemic (mupirocin and fusidic acid) antibiotics are essential for treatment of AD. However, frequent use of antibiotics results in an increase in the incidence of antibiotic-resistant S. aureus. Methicillin resistance S. aureus (MRSA) becomes a problem in the treatment of skin diseases. It’s found that the change from penicillin binding protein (PBP) to PBP2a with …

The Effect Of A Trehalase Inhibitor, Validamycin A, On The Growth Of Aspergillus Flavus, Napasawan Plabutong

Chulalongkorn University Theses and Dissertations (Chula ETD)

Aspergillus flavus is a fungus found in the environment causing keratitis, cutaneous infections, sinusitis, invasive pulmonary aspergillosis in humans. Although this fungus can be treated with antifungal agents, these main antifungal agents have many side effects. Trehalase is an enzyme for digesting trehalose into two glucose subunits and is essential for virulence in many fungi. A trehalase inhibitor, called validamycin A, has been used effectively against a rice fungal pathogen, Rhizoctonia solani. In this study, we observed that validamycin A increased trehalose levels significantly in A. flavus spores and delayed the germination of those spores. In addition, to further investigate …

Identification Of Probiotic Bacteria With Anticancer Activity Against Colorectal Cancer In Vitro, Patcharin Prakobwat

Chulalongkorn University Theses and Dissertations (Chula ETD)

Colorectal cancer is the third most common cause of cancer death worldwide. It is ranked third for new cancer patients in Thailand. Colorectal cancer is associated with multifactorial risk factors including the imbalance of gut microbiota. This project aimed to identify Lactobacillus strains isolated from Thai healthy populations that have anticancer activities against colorectal cancer in vitro. Lactobacillus cultured media (LCM) obtained from thirty-nine Lactobacillus strains, previously shown to have anti-inflammatory activity, were selected and used at different concentrations and/or pH adjustment to determine the anti-proliferative effect on HT-29 and Caco-2 colon cancer cells at 24, 48, and 72 h. …

Development Of Polymerase Chain Reaction Enzyme Linked Immunosorbent Assay For Detection Of Human Papillomavirus 16 L1 Gene Methylation, Sasiprapa Liewchalermwong

Chulalongkorn University Theses and Dissertations (Chula ETD)

It has been well known that cervical cancer is caused by persistent infections with the high risk human papillomavirus (HR-HPV) especially HPV16 and 18. However, a minority of HR-HPV infected women developed cancer, therefore, triage test is necessary to particularly select some HR-HPV infected women who are at higher risk to progress to cervical cancer quickly for colposcopy examination. Since HPV16 L1 gene hypermethylation has been reported to be correlated well with high grade cervical lesions and cancer, the present study aims to develop PCR-ELISA for detection of HPV16 L1 gene methylation. Cervical cells were collected from women who referred …

The Role Of Chromatin Structure In Cellular Responses To Bacterial Cytolethal Distending Toxin In Saccharomyces Cerevisiae Model, Siriyod Denmongkholchai

Chulalongkorn University Theses and Dissertations (Chula ETD)

Cytolethal distending toxin subunit B (CdtB) is a DNase I-like bacterial genotoxin that causes DNA damage leading to cell cycle arrest and cell death. Previous reports demonstrated that CdtB has low level of DNase activity in vitro. Besides, a mutation at histone H2B phosphorylation site required for chromatin condensation during apoptosis (S10A) conferred partial resistance to CdtB in Saccharomyces cerevisiae model. Therefore, we hypothesized that chromatin structure may affect CdtB function. In this study, we identified chromatin regulators required for CdtB cytotoxicity in yeast. We found that deletions of certain components of SWR-complex (SWR1, SWC2, SWC5, SWC6, and ARP6), INO80-complex …

Characterization Of Mait Tcr Repertoire Of Gastrointestinal Tract And Peripheral Blood Mait Cells, Thidarat Kongkaew

Chulalongkorn University Theses and Dissertations (Chula ETD)

Mucosal-associated invariant T (MAIT) cells are an innate-like T cell that rapidly respond to infection. MAIT cells are αβ T cells that possess a Vα7.2 (TRAV1-2) TCR with mostly pairing to TRAJ33, TRAJ20 or TRAJ12 and predominantly TRBV20-1, TRBV6-1 and TRBV6-4. MAIT T cell receptors (TCR) repertoire have been previously studied in peripheral blood. However, data on MAIT TCR repertoire in gastrointestinal tract are lacking. We studied 2 individuals who are underwent esophagogastroduodenoscopy (EGD) and colonoscopy. Blood and biopsies were obtained. PBMCs were isolated from blood and LPLs were isolated from biopsies. Due to the low number of MAIT cells …

Effect Of Oxidative Stress On Microglial Activation And Iron Accumulation, Rattanakorn Suntawalimp

Chulalongkorn University Theses and Dissertations (Chula ETD)

Microglia are the glial cell in the central nervous system. They function as resident immune cells in the brain. Microglial activation was an increase in the normal aged brain and also more found in the aged brain with neurodegenerative disease. Activated microglial were found iron accumulation leading to increase ROS generation via the Fenton reaction. Therefore, the increase of microglial activation and iron accumulation is vulnerable to neuronal survival. However, the cause of iron accumulation in the activated microglia still unknown. This study hypothesized that oxidative stress which increases in the aged and neurodegenerative disease brain may cause microglial activation …

Effect Of Jak2 Gene Mutations On Erythropoiesis Using Human Induced Pluripotent Stem Cells, Nungruthai Nilsri

Chulalongkorn University Theses and Dissertations (Chula ETD)

Activating mutations affecting the JAK-STAT signal transduction is the genetic driver of myeloproliferative neoplasms (MPNs) which comprise polycythemia vera (PV), essential thrombocythemia (ET) and myelofibrosis. The JAK2p.V617F mutation can produce both erythrocytosis in PV and thrombocytosis in ET, while JAK2 exon 12 mutations cause only erythrocytosis. We hypothesized that these two mutations activated different intracellular signals. In this study, the induced pluripotent stem cells (iPSCs) were used to model JAK2-mutated MPNs. Normal iPSCs underwent lentiviral transduction to overexpress JAK2p.V617F or JAK2p.N542_E543del (JAK2exon12) under a doxycycline-inducible system. The modified iPSCs were differentiated into erythroid cells. Compared with JAK2V617F-iPSCS, JAK2exon12-iPSCs yielded more …

Development Of A Clinically Feasible Translational Medical Approaches In The Treatment Of Pseudomonas Aeruginosa And Acinetobacter Baumannii Persistent Biofilm Infections., Dhammika Leshan Wannigama

Chulalongkorn University Theses and Dissertations (Chula ETD)

Despite strengthened antimicrobial therapy, biofilm infections of Pseudomonas aeruginosa and Acinetobacter baumannii are associated with poor prognosis and limited therapeutic options. Assessing antibiotics on planktonic bacteria can result in failure against biofilm infections. Currently, antibiotics to treat biofilm infections are administered empirically, usually without considering the susceptibility of the biofilm objectively before beginning treatment. For effective therapy to resolve biofilm infections it is essential to assess the efficacy of commonly used antibiotics against biofilms. Here, we offer a robust and simple assay to assess the efficacy of antibiotics against biofilms. In the present work, we carefully optimized the incubation time, …

Alteration Levels Of Monoamine Neurotransmitter Related With Non-Motor Symptoms And Their Fluctuation Patterns During On/Off Periods In Parkinson’S Patients, Patsorn Wichit

Chulalongkorn University Theses and Dissertations (Chula ETD)

Parkinson’s disease (PD) is the second most common neurodegenerative disorder. This study consisted of two parts. The purpose of part I was to investigate the difference in concentrations of DA, NE, 5-HT and their metabolites (3-methoxytyramine (3-MET), homovanillic acid (HVA), normetanephrine (NM), vanillylmandelic acid (VMA) and 5-hydroxyindoleacetic acid (5-HIAA)) in peripheral body fluids between control and PD groups. In addition, the correlation between these neurotransmitter levels and NMSs were evaluated. The purpose of part II was to investigate the fluctuation of plasma DA, NE and 5-HT concentrations during medication ON/OFF periods in advanced-PD patients. In part I, the control and …

Qualitative And Quantitative Morphological Study Of Flexor Hallucis Longus Implicated In Tendon Harvesting And Transfer, Perin Wan-Ae-Loh

Chulalongkorn University Theses and Dissertations (Chula ETD)

Flexor hallucis longus (FHL) transfer is a widely used technique for reconstruction of Achilles tendinopathies, but the complications such as neurovascular injury and functional loss of toes have been reported. This study aimed to evaluate the morphology of FHL musculotendinous junction (MTJ), location of MKH in reference to the landmarks in foot, type and morphometry of tendinous interconnection between FHL and flexor digitorum longus (FDL) tendons and FHL tendon length in single incision, double incision and minimally invasive techniques. The dissection was performed in 104 embalmed and 62 soft cadaveric feet. The result showed type 1 (87.3%) and type 3 …

Effects Of Moderate - Intensity Exercise Training On Cardiac Angiogenic Capacity And Fibrosis In Middle-Aged And Aged Rats, Titiporn Mekrungruangwong

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study aimed to investigate the protective effects of exercise training against age-induced the reduction of cardiac angiogenic capacity associated with p-Akt1, eNOS, Mdm2, p53, VEGF, and CD31 in rat hearts. Additionally, age-induced cardiac fibrosis association with TGF-β1 was also observed. Male Wistar rats were divided into five groups: Sedentary - young group (SE-Young, aged 4 months), Sedentary - middle-aged group (SE-Mid-Age, 14 months), Sedentary – aged group (SE-Age, aged 22 months), Exercise-trained middle-aged group (ET-Mid-Age, aged 14 months), and Exercise-trained -aged group (ET-Age, aged 22 months). In the SE- groups, rats were immersed individually for 30 minutes/day, 5 days/week …

Effect Of Canagliflozin On Liver Steatosis In Obese Non Diabetic Patients With Non-Alcoholicfatty Liver Disease: A Double Blind Randomized Controlled Trial, Borwonkhun Tontivuthikul

Chulalongkorn University Theses and Dissertations (Chula ETD)

Objective: To demonstrate whether treatment with canagliflozin had an effect on liver steatosis in obese non-diabetic patients with NAFLD compared with the control group Methods: 82 nondiabetic patients with BMI 25-35 kg/m2 underwent 24 weeks of double blind randomized controlled trial with combined canagliflozin 100 mg daily with diet-lifestyle modification or placebo with diet-lifestyle modification (500 calories restriction and moderate intensity aerobic exercise). Primary outcome was the change in Controlled attenuation parameter (CAP) representing hepatic steatosis. Liver stiffness measurement (LSM) representing liver stiffness/fibrosis and other secondary outcomes including changes in body weight, fasting plasma glucose, lipid profile, liver function test …

Serum Microrna Profile And Serum Neuron Specific Enolase, S-100, And Interleukin-6 Level As Biomarkers For Differentiating Acute Vertigo Between Cerebellar Or Brainstem Infarction And Peripheral Vertigo, Naruchorn Kijpaisalratana

Chulalongkorn University Theses and Dissertations (Chula ETD)

Background and PurposeAcute vertigo is a common presentation of inner ear disease. However, it can also be caused by more serious conditions, especially posterior circulation stroke. Differentiation between these 2 conditions by clinical presentations and imaging studies during acute phase can be challenging. This study aims to evaluate the serum microRNA profile and serum neuron specific enolase (NSE), S-100, and interleukin-6 (IL-6) level as potential biomarkers to differentiate between patients with central vertigo due to cerebellar or brainstem infarction and peripheral vertigo.MethodsIn the discovery phase, miRNA expression profiling was performed by Nanostring nCounter Technology in serum of patients with central …

Effects Of Non-Albicans Candida Species On Biofilm Formation And Acidogenicity Of Dual-Species Biofilms And On Cariogenic Virulence Gene Expression Of Streptococcus Mutans, Wirunphat Sansanoa

Chulalongkorn University Theses and Dissertations (Chula ETD)

Early childhood caries is a common oral disease found in children which could affect their general health. Streptococcus mutans is an important cariogenic pathogen since it possesses cariogenic properties, which are acid production, acid tolerance and biofilm formation. Recent studies showed that Candida albicans, which is frequently found together with S. mutans in plaques of children with dental caries, enhances cariogenicity. At the same time, increasing prevalence of non-albicans Candida species (NACs) in children and immune-compromised patients has been reported. Therefore, this study aims to investigate the effects of NACs when co-cultured with S. mutans on cariogenic properties and virulence …

The Incidence Of Antibiotic-Resistant Staphylococcus Spp. Colonization And Infection In Children And Adults With Atopic Dermatitis, Matchima Laowansiri

Chulalongkorn University Theses and Dissertations (Chula ETD)

Atopic dermatitis (AD) is an inflammatory skin disease characterized by chronic and recurrent eczematous rash. AD occurs in both children and adults, but children are more affected. An important aggravating factor is caused by Staphylococcus aureus (S. aureus) infection. Therefore, topical (beta-lactam, macrolides, clindamycin) and systemic (mupirocin and fusidic acid) antibiotics are essential for treatment of AD. However, frequent use of antibiotics results in an increase in the incidence of antibiotic-resistant S. aureus. Methicillin resistance S. aureus (MRSA) becomes a problem in the treatment of skin diseases. It’s found that the change from penicillin binding protein (PBP) to PBP2a with …

Abnormal Response Of Costal Chondrocytes To Acidosis In Patients With Chest Wall Deformity, A. Asmar, Iurii Semenov, R. Kelly Jr., Michael Stacey

Bioelectrics Publications

Costal cartilage is much understudied compared to the load bearing cartilages. Abnormally grown costal cartilages are associated with the inherited chest wall deformities pectus excavatum and pectus carinatum resulting in sunken or pigeon chest respectively. A lack of understanding of the ultrastructural and molecular biology properties of costal cartilage is a major confounder in predicting causes and outcomes of these disorders. Due to the avascular nature of cartilage, chondrocytes metabolize glycolytically, producing an acidic environment. During physical activity hydrogen ions move within cartilage driven by compressive forces, thus at any one time, chondrocytes experience transient changes in pH. A variety …

Initiation Of Action Potential In Murine Ventricular Myocytes By Bursts Of Nanosecond Pulses, Iurii Semenov

Bioelectrics Publications

[First slide] Current situation

I. Among 300,000 persons die from sudden cardiac arrest every year over 40% are victims of fibrillation

II. Defibrillation by an electric shock is the effective therapy against sudden cardiac death

III. Current approach to stop fibrillation may involve disruption of plasma membrane (PM) by an electroporation

IV. Electroporation is damaging, it can: I. Induce post shock arrhythmias II. Complicate patient's recovery III. Lead to death after initially successful resuscitation

Modulation Of Autophagy And Senescence To Enhance The Response To Therapy In Triple Negative Breast Cancer, Liliya Tyutyunyk-Massey

Theses and Dissertations

Abstract

Although great strides have been made over the decades in development and optimization of anti-cancer therapies, even highly effective drugs often fail to completely eliminate tumors. Residual tumor cells can enter into a state of dormancy for prolonged periods of time but eventually are able to regain proliferative capacity and reemerge as chemotherapy-resistant disease. Because recurrent disease is a leading contributor to patient’s mortality, it is paramount to identify strategies for effectively destroying residual tumor cells.

Cytotoxic drugs and ionizing radiation are used as standard therapies in a variety of cancers. These modalities induce apoptosis, autophagy and senescence. Senescence …

Axon Initial Segment Integrity In Aging And Traumatic Brain Injury, Mazen M. Gouda

Theses and Dissertations

According to the Center for Disease Control’s (CDC) report to the Congress, there are 2.2 million emergency department visits; 80,000 hospitalizations; and 50,000 deaths each year due to traumatic brain injury. Adults 65 years and older account substantially for the majority of the hospitalization and deaths. Over 70% of the traumatic brain injuries of the older adults are classified as mild to moderate; however, even with these milder injuries, older adults present with a significantly higher morbidity and mortality compared to all other age groups (LeBlanc et al., 2006). With that in mind, it seems essential to develop a deeper …

Characterization Of The Novel Interaction Between Neisseria Gonorrhoeae Tdfj And Its Human Ligand S100a7, Stavros Maurakis

Theses and Dissertations

Neisseria gonorrhoeae is an obligate human pathogen that causes the common STI gonorrhea, which presents a growing threat to global health. The WHO estimated 78 million new cases of gonorrhea worldwide in 2017, with estimates of 820,000 new cases in the United States alone according to the CDC. High-frequency phase and antigenic variation inherent in N. gonorrhoeae, coupled with its natural ability to rapidly acquire and stably integrate antimicrobial resistance factors into its genome, have culminated in an infection against which there is no effective vaccine, and for which the list of viable therapeutic options is quickly shrinking. Moreover, no …

Diuretic, Natriuretic, And Vasodepressor Activity Of A Lipid Fraction Enhanced In Medium Of Cultured Mouse Medullary Interstitial Cells By A Selective Faah Inhibitor, Zdravka P. Daneva

Theses and Dissertations

The relationship between the endocannabinoid system in the renal medulla and the long-term regulation of blood pressure is not well understood. To investigate the possible role of the endocannabinoid system in renomedullary interstitial cells, mouse medullary interstitial cells (MMICs) were obtained, cultured and characterized for their responses to treatment with a selective inhibitor of fatty acid amide hydrolase (FAAH), PF-3845. Treatment of MMICs with PF-3845 increased cytoplasmic lipid granules detected by Sudan Black B staining and multilamellar bodies identified by transmission electron microscopy. HPLC analyses of lipid extracts of MMIC culture medium revealed a 205nm-absorbing peak that showed responsiveness to …

Conjugated Bile Acid And Sphingosine 1-Phosophate Prompt Cholangiocarcinoma Cell Growth Via Releasing Exosomes, Waad A. Alruwaili

Theses and Dissertations

Cholangiocarcinoma (CCA) is a fatal primary malignancy that is formed in the bile ducts. Cancer-associated myofibroblasts play a crucial role in CCA proliferation and invasion. Furthermore, there is a growing interest in the role of the exosome in the interaction between the cancer-associated myofibroblasts and cholangiocarcinoma which lead to CCA growth. However how cholangiocarcinoma-derived exosome affect the cancer-associated myofibroblasts in the tumor microenvironment remain unknown. In this study, we examined whether exosome produced by cholangiocarcinoma could involve in the prompt of CCA cells growth by regulation of myofibroblast. We found that cholangiocarcinoma-derived exosome could prompt elevated α-smooth muscle actin and …

A High Fructose Diet Alters Affective-Like Behavior And Metrics Of Synaptic Mitochondrial Function Differentially In Male And Female Rats, Alix H. Kloster

Theses and Dissertations

Fructose consumption has become a normalized part of the standard American diet over the past 40 years. While fructose consumption is a known risk factor of metabolic syndrome, there is increasing evidence that fructose consumption influences brain and behavior. Recently, more interest has been focused on mitochondrial dysfunction as a potential link between metabolic stress and modifications of the central nervous system. Mitochondria are in the unique position of both regulating and being vulnerable to alterations in energy homeostasis. Sex-differences are well categorized in the presentation of metabolic symptoms associated with excessive fructose consumption. Thus, it is important to characterize …

Pharmacodynamics Of Monoamine Transporter Releasing Agents And Reuptake Inhibitors, Alexa Holloway

Theses and Dissertations

Ligands of the human monoamine transporters encompass a wide range of both illicit and therapeutic drugs that act upon neural circuitry related to reward, motivation, and the processing of salient stimuli. The present study utilizes two methods for analyzing transporter substrates and inhibitors in order to characterize activity and assess potency. The first measures transient changes in intracellular calcium as a surrogate for transporter activity by harnessing the electrical coupling of monoamine transporters and L-type calcium channels. This is used to analyze novel chimera of the strong hDAT inhibitors methylphenidate and ��-PPP in order to assess the contribution of specific …

The Role Of Tumor And Tumor Microenvironment On Breast Cancer-Associated Adipocyte Plasticity, Janina V. Pearce

Theses and Dissertations

Cancer-associated cachexia is a condition defined by a sustained net-negative energy imbalance. Although the different types of adipose tissue – white, beige, and brown – have been implicated in contributing to cancer-associated cachexia, the mechanisms of these maladaptive changes and their impact on whole-body energy expenditure have not been fully elucidated. Using breast cancer as our model, we demonstrate white adipose tissue browning in murine and human breast cancer; furthermore, we demonstrate that this effect is extremely localized and takes place early in tumor progression. We utilized in vitro cell culture techniques and demonstrate that cancer secreted factors and cross-talk …

Embryonic Stem Cell-Derived Exosomes Increase The Antiproliferative Activity Of Doxorubicin In Breast Cancer, Alexander M. Hirsch

Theses and Dissertations

The field of cancer research has grown immensely in recent decades and has led to a better understanding of the causes of the disease, as well as greatly improved treatment for various types of cancers, especially breast cancer. One of the most effective treatments involves the chemotherapeutic drug doxorubicin (DOX). DOX is an effective tool against all types of breast cancer, especially against triple negative breast cancer. However, DOX causes adverse side effects that include damage to the heart and skeletal muscle, particularly above specific cumulative doses. Recent evidence suggests that embryonic stem cell-derived (ES) exosomes, nanoscale extracellular vesicles that …