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Articles 1 - 30 of 471
Full-Text Articles in Medicine and Health Sciences
Acute Hypersensitivity Of Pluripotent Testicular Cancer-Derived Embryonal Carcinoma To Low-Dose 5-Aza Deoxycytidine Is Associated With Global Dna Damage-Associated P53 Activation, Anti-Pluripotency And Dna Demethylation, Bijesh K. Biswal, Maroun J. Beyrouthy, Mary P. Hever-Jardine, David Armstrong, Craig R. Tomlinson, Brock C. Christensen, Carmen J. Marsit, Michael J. Spinella
Acute Hypersensitivity Of Pluripotent Testicular Cancer-Derived Embryonal Carcinoma To Low-Dose 5-Aza Deoxycytidine Is Associated With Global Dna Damage-Associated P53 Activation, Anti-Pluripotency And Dna Demethylation, Bijesh K. Biswal, Maroun J. Beyrouthy, Mary P. Hever-Jardine, David Armstrong, Craig R. Tomlinson, Brock C. Christensen, Carmen J. Marsit, Michael J. Spinella
Dartmouth Scholarship
Human embryonal carcinoma (EC) cells are the stem cells of nonseminoma testicular germ cells tumors (TGCTs) and share remarkable similarities to human embryonic stem (ES) cells. In prior work we found that EC cells are hypersensitive to low nanomolar doses of 5-aza deoxycytidine (5-aza) and that this hypersensitivity partially depended on unusually high levels of the DNA methyltransferase, DNMT3B. We show here that low-dose 5-aza treatment results in DNA damage and induction of p53 in NT2/D1 cells. In addition, low-dose 5-aza results in global and gene specific promoter DNA hypomethylation. Low- dose 5-aza induces a p53 transcriptional signature distinct from …
Multiple Subject Barycentric Discriminant Analysis (Musubada): How To Assign Scans To Categories Without Using Spatial Normalization, Hervé Abdi, Lynne J. Williams, Andrew C. Connolly, M. Ida Gobbini
Multiple Subject Barycentric Discriminant Analysis (Musubada): How To Assign Scans To Categories Without Using Spatial Normalization, Hervé Abdi, Lynne J. Williams, Andrew C. Connolly, M. Ida Gobbini
Dartmouth Scholarship
We present a new discriminant analysis (DA) method called Multiple Subject Barycentric Discriminant Analysis (MUSUBADA) suited for analyzing fMRI data because it handles datasets with multiple participants that each provides different number of variables (i.e., voxels) that are themselves grouped into regions of interest (ROIs). Like DA, MUSUBADA (1) assigns observations to predefined categories, (2) gives factorial maps displaying observations and categories, and (3) optimally assigns observations to categories. MUSUBADA handles cases with more variables than observations and can project portions of the data table (e.g., subtables, which can represent participants or ROIs) on the factorial maps. Therefore MUSUBADA can …
The Role Of Dairy Products And Milk In Adolescent Obesity: Evidence From Hong Kong’S ‘‘Children Of 1997’’ Birth Cohort, Shi Lin Lin, Marie Tarrant, Lai Ling Hui, Man Ki Kwok, Tai Hing Lam, Gabriel M. Leung, Mary Schooling
The Role Of Dairy Products And Milk In Adolescent Obesity: Evidence From Hong Kong’S ‘‘Children Of 1997’’ Birth Cohort, Shi Lin Lin, Marie Tarrant, Lai Ling Hui, Man Ki Kwok, Tai Hing Lam, Gabriel M. Leung, Mary Schooling
Publications and Research
Background
Observational studies, mainly from Western populations, suggest dairy consumption is inversely associated with adiposity. However, in these populations the intake range is limited and both diet and obesity may share social patterning. Evidence from non-Western developed settings with different social patterning, is valuable in distinguishing whether observed associations are biologically mediated or socially confounded.
Objective
To examine the associations of milk or other dairy product consumption with adolescent obesity.
Methods
We used multivariable linear regression models to examine the associations of milk or other dairy product consumption, obtained from a food frequency questionnaire, at 11 years with body mass …
Human Calmodulin Methyltransferase: Expression, Activity On Calmodulin, And Hsp90 Dependence, Sophia Magen, Roberta Magnani, Sitvanit Haziza, Eli Hershkovitz, Robert Houtz, Franca Cambi, Ruti Parvari
Human Calmodulin Methyltransferase: Expression, Activity On Calmodulin, And Hsp90 Dependence, Sophia Magen, Roberta Magnani, Sitvanit Haziza, Eli Hershkovitz, Robert Houtz, Franca Cambi, Ruti Parvari
Horticulture Faculty Publications
Deletion of the first exon of calmodulin-lysine N-methyltransferase (CaM KMT, previously C2orf34) has been reported in two multigene deletion syndromes, but additional studies on the gene have not been reported. Here we show that in the cells from 2p21 deletion patients the loss of CaM KMT expression results in accumulation of hypomethylated calmodulin compared to normal controls, suggesting that CaM KMT is essential for calmodulin methylation and there are no compensatory mechanisms for CaM methylation in humans. We have further studied the expression of this gene at the transcript and protein levels. We have identified 2 additional …
Multiple Regulatory Mechanisms Control B-1 B Cell Activation, Vishal Sindhava, Subbarao Bondada
Multiple Regulatory Mechanisms Control B-1 B Cell Activation, Vishal Sindhava, Subbarao Bondada
Microbiology, Immunology, and Molecular Genetics Faculty Publications
B-1 cells constitute a unique subset of B cells identified in several species including mice and humans. B-1 cells are further subdivided into B-1a and B-1b subsets as the former but not the later express CD5.The B-1a subset contributes to innate type of immune responses while the B-1b B cell subset contributes to adaptive responses. B-1 cell responses to B cell receptor (BCR) as well as Toll-like receptor (TLR) ligation are tightly regulated due to the cross-reactivity of antigen specific receptors on B-1 cells to self-antigens. B-1 cells are elevated in several autoimmune diseases. CD5 plays a major role in …
Alterations In Glutathione Levels And Apoptotic Regulators Are Associated With Acquisition Of Arsenic Trioxide Resistance In Multiple Myeloma, Shannon M. Matulis, Alejo A. Morales, Lucy Yehiayan, Kelvin P. Lee, Yong Cai, Lawrence H. Boise
Alterations In Glutathione Levels And Apoptotic Regulators Are Associated With Acquisition Of Arsenic Trioxide Resistance In Multiple Myeloma, Shannon M. Matulis, Alejo A. Morales, Lucy Yehiayan, Kelvin P. Lee, Yong Cai, Lawrence H. Boise
Department of Chemistry and Biochemistry
Arsenic trioxide (ATO) has been tested in relapsed/refractory multiple myeloma with limited success. In order to better understand drug mechanism and resistance pathways in myeloma we generated an ATO-resistant cell line, 8226/S-ATOR05, with an IC50 that is 2–3-fold higher than control cell lines and significantly higher than clinically achievable concentrations. Interestingly we found two parallel pathways governing resistance to ATO in 8226/S-ATOR05, and the relevance of these pathways appears to be linked to the concentration of ATO used. We found changes in the expression of Bcl-2 family proteins Bfl-1 and Noxa as well as an increase in cellular glutathione (GSH) …
Luteolin Inhibits Human Prostate Tumor Growth By Suppressing Vascular Endothelial Growth Factor Receptor 2-Mediated Angiogenesis, Poyil Pratheeshkumar, Young-Ok Son, Amit Budhraja, Xin Wang, Songze Ding, Lei Wang, Andrew Hitron, Jeong-Chae Lee, Donghern Kim, Sasidharan Padmaja Divya, Gang Chen, Zhuo Zhang, Jia Luo, Xianglin Shi
Luteolin Inhibits Human Prostate Tumor Growth By Suppressing Vascular Endothelial Growth Factor Receptor 2-Mediated Angiogenesis, Poyil Pratheeshkumar, Young-Ok Son, Amit Budhraja, Xin Wang, Songze Ding, Lei Wang, Andrew Hitron, Jeong-Chae Lee, Donghern Kim, Sasidharan Padmaja Divya, Gang Chen, Zhuo Zhang, Jia Luo, Xianglin Shi
Toxicology and Cancer Biology Faculty Publications
Angiogenesis, the formation of new blood vessels from pre-existing vascular beds, is essential for tumor growth, invasion, and metastasis. Luteolin is a common dietary flavonoid found in fruits and vegetables. We studied the antiangiogenic activity of luteolin using in vitro, ex vivo, and in vivo models. In vitro studies using rat aortic ring assay showed that luteolin at non-toxic concentrations significantly inhibited microvessel sprouting and proliferation, migration, invasion and tube formation of endothelial cells, which are key events in the process of angiogenesis. Luteolin also inhibited ex vivo angiogenesis as revealed by chicken egg chorioallantoic membrane assay (CAM) …
Targeted Disruption Of Adamts16 Gene In A Rat Genetic Model Of Hypertension, Kathirvel Gopalakrishnan, Sivarajan Kumarasamy, Shakila Abdul-Majeed, Andrea L. Kalinoski, Eric E. Morgan, Amira F. Gohara, Surya M. Nauli, Wanda E. Filipiak, Thomas L. Saunders, Bina Joe
Targeted Disruption Of Adamts16 Gene In A Rat Genetic Model Of Hypertension, Kathirvel Gopalakrishnan, Sivarajan Kumarasamy, Shakila Abdul-Majeed, Andrea L. Kalinoski, Eric E. Morgan, Amira F. Gohara, Surya M. Nauli, Wanda E. Filipiak, Thomas L. Saunders, Bina Joe
Pharmacy Faculty Articles and Research
A disintegrin-like metalloproteinase with thrombospondin motifs-16 (Adamts16) is an important candidate gene for hypertension. The goal of the present study was to further assess the candidacy of Adamts16 by targeted disruption of this gene in a rat genetic model of hypertension. A rat model was generated by manipulating the genome of the Dahl Salt-sensitive (S) rat using zinc-finger nucleases, wherein the mutant rat had a 17 bp deletion in the first exon of Adamts16, introducing a stop codon in the transcript. Systolic blood pressure (BP) of the homozygous Adamts16(mutant) rats was lower by 36 mmHg compared with the BP of …
Degeneration Of Phrenic Motor Neurons Induces Long-Term Diaphragm Deficits Following Mid-Cervical Spinal Contusion In Mice., Charles Nicaise, Rajarshi Putatunda, Tamara J Hala, Kathleen A Regan, David M Frank, Jean-Pierre Brion, Karelle Leroy, Roland Pochet, Megan C Wright, Angelo C Lepore
Degeneration Of Phrenic Motor Neurons Induces Long-Term Diaphragm Deficits Following Mid-Cervical Spinal Contusion In Mice., Charles Nicaise, Rajarshi Putatunda, Tamara J Hala, Kathleen A Regan, David M Frank, Jean-Pierre Brion, Karelle Leroy, Roland Pochet, Megan C Wright, Angelo C Lepore
Department of Neuroscience Faculty Papers
A primary cause of morbidity and mortality following cervical spinal cord injury (SCI) is respiratory compromise, regardless of the level of trauma. In particular, SCI at mid-cervical regions targets degeneration of both descending bulbospinal respiratory axons and cell bodies of phrenic motor neurons, resulting in deficits in the function of the diaphragm, the primary muscle of inspiration. Contusion-type trauma to the cervical spinal cord is one of the most common forms of human SCI; however, few studies have evaluated mid-cervical contusion in animal models or characterized consequent histopathological and functional effects of degeneration of phrenic motor neuron-diaphragm circuitry. We have …
Depletion Of Endothelial Or Smooth Muscle Cell-Specific Angiotensin Ii Type 1a Receptors Does Not Influence Aortic Aneurysms Or Atherosclerosis In Ldl Receptor Deficient Mice, Debra L. Rateri, Jessica J. Moorleghen, Victoria Knight, Anju Balakrishnan, Deborah A. Howatt, Lisa A. Cassis, Alan Daugherty
Depletion Of Endothelial Or Smooth Muscle Cell-Specific Angiotensin Ii Type 1a Receptors Does Not Influence Aortic Aneurysms Or Atherosclerosis In Ldl Receptor Deficient Mice, Debra L. Rateri, Jessica J. Moorleghen, Victoria Knight, Anju Balakrishnan, Deborah A. Howatt, Lisa A. Cassis, Alan Daugherty
Saha Cardiovascular Research Center Faculty Publications
BACKGROUND: Whole body genetic deletion of AT1a receptors in mice uniformly reduces hypercholesterolemia and angiotensin II-(AngII) induced atherosclerosis and abdominal aortic aneurysms (AAAs). However, the role of AT1a receptor stimulation of principal cell types resident in the arterial wall remains undefined. Therefore, the aim of this study was to determine whether deletion of AT1a receptors in either endothelial cells or smooth muscle cells influences the development of atherosclerosis and AAAs.
METHODOLOGY/PRINCIPAL FINDINGS: AT1a receptor floxed mice were developed in an LDL receptor -/- background. To generate endothelial or smooth muscle cell specific deficiency, AT1a receptor floxed mice were bred with …
Molecular Characterization Of A Tetraspanin From The Human Liver Fluke, Opisthorchis Viverrini, Supawadee Piratae, Smarn Tesana, Malcolm K. Jones, Paul J. Brindley, Alex Loukas, Erica Lovas, Veerachai Eursitthichai, Banchob Sripa, Sirikanda Thanasuwan, Thewarach Laha
Molecular Characterization Of A Tetraspanin From The Human Liver Fluke, Opisthorchis Viverrini, Supawadee Piratae, Smarn Tesana, Malcolm K. Jones, Paul J. Brindley, Alex Loukas, Erica Lovas, Veerachai Eursitthichai, Banchob Sripa, Sirikanda Thanasuwan, Thewarach Laha
Microbiology, Immunology, and Tropical Medicine Faculty Publications
Background
The human liver fluke, Opisthorchis viverrini, is designated as a group 1 carcinogen, and is the major risk factor for cholangiocarcinoma in endemic countries throughout Southeast Asia. Proteins in the excretory-secretory products and tegumental surface membranes of the fluke have been proposed to play pivotal roles in parasite survival in the host, and subsequent pathogenesis. These macromolecules are therefore valid targets for the development of vaccines and new drugs to control the infection. Tetraspanins (TSP) are prominent components of the tegument of blood flukes where they are essential for tegument formation, are directly exposed to the immune system, …
The P2y(12) Antagonists, 2mesamp And Cangrelor, Inhibit Platelet Activation Through P2y(12)/G(I)-Dependent Mechanism, Binggang Xiang, Guoying Zhang, Hongmei Ren, Manjula Sunkara, Andrew J. Morris, T. Kent Gartner, Susan S. Smyth, Zhenyu Li
The P2y(12) Antagonists, 2mesamp And Cangrelor, Inhibit Platelet Activation Through P2y(12)/G(I)-Dependent Mechanism, Binggang Xiang, Guoying Zhang, Hongmei Ren, Manjula Sunkara, Andrew J. Morris, T. Kent Gartner, Susan S. Smyth, Zhenyu Li
Saha Cardiovascular Research Center Faculty Publications
BACKGROUND: ADP is an important physiological agonist that induces integrin activation and platelet aggregation through its receptors P2Y(1) (Gα(q)-coupled) and P2Y(12) (Gα(i)-coupled). P2Y(12) plays a critical role in platelet activation and thrombosis. Adenosine-based P2Y(12) antagonists, 2-methylthioadenosine 5'-monophosphate triethylammonium salt hydrate (2MeSAMP) and Cangrelor (AR-C69931MX) have been widely used to demonstrate the role of P2Y(12) in platelet function. Cangrelor is being evaluated in clinical trials of thrombotic diseases. However, a recent study reported that both 2MeSAMP and Cangrelor raise intra-platelet cAMP levels and inhibit platelet aggregation through a P2Y(12)-independent mechanism.
METHODOLOGY/PRINCIPAL FINDINGS: The present work, using P2Y(12) deficient mice, sought to …
Microrna Mir-155 Affects Antiviral Effector And Effector Memory Cd8 T Cell Differentiation, Ching-Yi Tsai, S. Rameeza Allie, Weijun Zhang, Edward J. Usherwood
Microrna Mir-155 Affects Antiviral Effector And Effector Memory Cd8 T Cell Differentiation, Ching-Yi Tsai, S. Rameeza Allie, Weijun Zhang, Edward J. Usherwood
Dartmouth Scholarship
MicroRNAs are key regulators of the immune response, but their role in CD8 T cell differentiation in vivo is not known. We show that miR-155 is important in both effector and memory antiviral CD8 T cell responses. Without miR-155, there was a weaker effector response and a skewing toward memory precursor cells. At the memory stage, miR-155-deficient CD8 T cells preferentially differentiated into central memory cells and were capable of mounting a potent secondary response.
Myeloid-Derived Suppressor Cells In Murine Retrovirus-Induced Aids Inhibit T- And B-Cell Responses In Vitro That Are Used To Define The Immunodeficiency, Kathy A. Green, W. James Cook, William R. Green
Myeloid-Derived Suppressor Cells In Murine Retrovirus-Induced Aids Inhibit T- And B-Cell Responses In Vitro That Are Used To Define The Immunodeficiency, Kathy A. Green, W. James Cook, William R. Green
Dartmouth Scholarship
Myeloid-derived suppressor cells (MDSCs) have been characterized in several disease settings, especially in many tumor systems. Compared to their involvement in tumor microenvironments, however, MDSCs have been less well studied in their responses to infectious disease processes, in particular to retroviruses that induce immunodeficiency. Here, we demonstrate for the first time the development of a highly immunosuppressive MDSC population that is dependent on infection by the LP-BM5 retrovirus, which causes murine acquired immunodeficiency. These MDSCs express a cell surface marker signature (CD11b Gr-1 Ly6C ) characteristic of monocyte-type MDSCs. Such MDSCs profoundly inhibit immune responsiveness by a cell dose- and …
Glutaredoxin 2 (Grx2) Knockout Increases Sensitivity To Oxidative Stress In Mouse Lens Epithelial Cells, Hongli Wu, Liren Lin, Frank Giblin, Ye-Sheh Ho, Marjorie F. Lou
Glutaredoxin 2 (Grx2) Knockout Increases Sensitivity To Oxidative Stress In Mouse Lens Epithelial Cells, Hongli Wu, Liren Lin, Frank Giblin, Ye-Sheh Ho, Marjorie F. Lou
School of Veterinary and Biomedical Sciences: Faculty Publications
Glutaredoxin belongs to the oxidoreductase family with cytosolic glutaredoxin 1 (Grx1) and mitochondrial gluraredoxin 2 (Grx2) isoforms. Of the two isozymes, the function of Grx2 is not well understood. This paper studied the effect of Grx2 deletion on cellular function using primary lens epithelial cell cultures isolated from Grx2 gene knockout (KO) and wild type (WT) mice. We found that both cell types showed similar growth patterns and morphology, and comparable mitochondrial glutathione pool and complex I activity. Cells with deleted Grx2 did not show affected Grx1 or thioredoxin (Trx) expression but exhibited high sensitivity to oxidative stress. Under treatment …
Generating Forensic Dna Profiles, Dan E. Krane
Generating Forensic Dna Profiles, Dan E. Krane
Biological Sciences Faculty Publications
No abstract provided.
Statistical Weights Of Single Source Dna Profiles, Dan E. Krane
Statistical Weights Of Single Source Dna Profiles, Dan E. Krane
Biological Sciences Faculty Publications
No abstract provided.
New Fusion Transcripts Identified In Normal Karyotype Acute Myeloid Leukemia, Hongxiu Wen, Yongjin Li, Sami N. Malek, Yeong C. Kim, Jia Xu, Pei Xian Chen, Fengxia Xiao, Xin Huang, Xianzheng Zhou, Zhenyu Xuan, Shiva Mankala, Guihua Hou, Janet D. Rowley, Michael Q. Zhang, San Ming Wang
New Fusion Transcripts Identified In Normal Karyotype Acute Myeloid Leukemia, Hongxiu Wen, Yongjin Li, Sami N. Malek, Yeong C. Kim, Jia Xu, Pei Xian Chen, Fengxia Xiao, Xin Huang, Xianzheng Zhou, Zhenyu Xuan, Shiva Mankala, Guihua Hou, Janet D. Rowley, Michael Q. Zhang, San Ming Wang
Journal Articles: Genetics, Cell Biology & Anatomy
Genetic aberrations contribute to acute myeloid leukemia (AML). However, half of AML cases do not contain the well-known aberrations detectable mostly by cytogenetic analysis, and these cases are classified as normal karyotype AML. Different outcomes of normal karyotype AML suggest that this subgroup of AML could be genetically heterogeneous. But lack of genetic markers makes it difficult to further study this subgroup of AML. Using paired-end RNAseq method, we performed a transcriptome analysis in 45 AML cases including 29 normal karyotype AML, 8 abnormal karyotype AML and 8 AML without karyotype informaiton. Our study identified 134 fusion transcripts, all of …
Draft Genome Sequence For Pseudomonas Aeruginosa Strain Pao579, A Mucoid Derivative Of Pao381, T. Ryan Withers, Shannon L. Johnson, Hongwei D. Yu
Draft Genome Sequence For Pseudomonas Aeruginosa Strain Pao579, A Mucoid Derivative Of Pao381, T. Ryan Withers, Shannon L. Johnson, Hongwei D. Yu
Biochemistry and Microbiology
Pseudomonas aeruginosa is an opportunistic pathogen that establishes a chronic lung infection in individuals afflicted with cystic fibrosis. Here, we announce the draft genome of P. aeruginosa strain PAO579, an alginate-overproducing derivative of strain PAO381.
What Can Go Wrong With Dna Profiling, Dan E. Krane
What Can Go Wrong With Dna Profiling, Dan E. Krane
Biological Sciences Faculty Publications
No abstract provided.
Observer Effects In Dna Profiling, Dan E. Krane
Observer Effects In Dna Profiling, Dan E. Krane
Biological Sciences Faculty Publications
No abstract provided.
Artifacts And Noise In Dna Profiling, Dan E. Krane
Artifacts And Noise In Dna Profiling, Dan E. Krane
Biological Sciences Faculty Publications
No abstract provided.
Implications Of Database Searches For Dna Profiling Statistics, Dan E. Krane
Implications Of Database Searches For Dna Profiling Statistics, Dan E. Krane
Biological Sciences Faculty Publications
No abstract provided.
Statistical Weights Of Mixed Dna Profiles, Dan E. Krane
Statistical Weights Of Mixed Dna Profiles, Dan E. Krane
Biological Sciences Faculty Publications
Presentation recording from December 2012 can be found at http://youtu.be/daRBTopFA1A.
Part of the Forensic DNA Profiling Video Series.
Dna Technology In Court, Dan E. Krane
Dna Technology In Court, Dan E. Krane
Biological Sciences Faculty Publications
No abstract provided.
Tumour Inflammasome-Derived Il-1b Recruits Neutrophils And Improves Local Recurrence-Free Survival In Ebv-Induced Nasopharyngeal Carcinoma, Lih-Chyang Chen, Li-Jie Wang, Nang-Ming Tsang, David M. Ojcius, Chia-Chen Chen, Chun-Nan Ouyang, Chuen Hsueh, Ying Liang, Kai-Ping Chang, Chiu-Chin Chen, Yu-Sun Chang
Tumour Inflammasome-Derived Il-1b Recruits Neutrophils And Improves Local Recurrence-Free Survival In Ebv-Induced Nasopharyngeal Carcinoma, Lih-Chyang Chen, Li-Jie Wang, Nang-Ming Tsang, David M. Ojcius, Chia-Chen Chen, Chun-Nan Ouyang, Chuen Hsueh, Ying Liang, Kai-Ping Chang, Chiu-Chin Chen, Yu-Sun Chang
All Dugoni School of Dentistry Faculty Articles
Inflammasomes sense infection and cellular damage and are critical for triggering inflammation through IL-1β production. In carcinogenesis, inflammasomes may have contradictory roles through facilitating antitumour immunity and inducing oncogenic factors. Their function in cancer remains poorly characterized. Here we show that the NLRP3, AIM2 and RIG-I inflammasomes are overexpressed in Epstein-Barr virus (EBV)-associated nasopharyngeal carcinoma (NPC), and expression levels correlate with patient survival. In tumour cells, AIM2 and RIG-I are required for IL-1β induction by EBV genomic DNA and EBV-encoded small RNAs, respectively, while NLRP3 responds to extracellular ATP and reactive oxygen species. Irradiation and chemotherapy can further activate AIM2 …
Reversible Inhibition Of Chlamydia Trachomatis Infection In Epithelial Cells Due To Stimulation Of P2x4 Receptors, Matthew A. Pettengill, Camila Marques-Da-Silva, Maria Luisa Avila, Verissa W. Lam, Ikechukwu Ollawa, Ali Abdul-Sater, Robson Coutinho-Silva, Georg Hacker, David M. Ojcius, Suellen D'Arc Dos Santos Oliveira
Reversible Inhibition Of Chlamydia Trachomatis Infection In Epithelial Cells Due To Stimulation Of P2x4 Receptors, Matthew A. Pettengill, Camila Marques-Da-Silva, Maria Luisa Avila, Verissa W. Lam, Ikechukwu Ollawa, Ali Abdul-Sater, Robson Coutinho-Silva, Georg Hacker, David M. Ojcius, Suellen D'Arc Dos Santos Oliveira
All Dugoni School of Dentistry Faculty Articles
Bacterial infections of the mucosal epithelium are a major cause of human disease. The prolonged presence of microbial pathogens stimulates inflammation of the local tissues, which leads to changes in the molecular composition of the extracellular milieu. A well-characterized molecule that is released to the extracellular milieu by stressed or infected cells is extracellular ATP and its ecto-enzymatic degradation products, which function as signaling molecules through ligation of purinergic receptors. There has been little information, however, on the effects of the extracellular metabolites on bacterial growth in inflamed tissues. Millimolar concentrations of ATP have been previously shown to inhibit irreversibly …
Raman Micro Spectroscopy For The Characterisation Of Cervical Cancer., Nosheen Rashid
Raman Micro Spectroscopy For The Characterisation Of Cervical Cancer., Nosheen Rashid
Doctoral
The primary purpose of this study is to evaluate the potential of FTIR and Confocal Raman micro spectroscopy (CRM) in elucidating the biochemical changes occurring in different layers of the cervical epithelium including basal, superficial and the underlying connective tissue known as stroma during the progression of Cervical Intraepithelial Neoplasia (CIN) to cancer. Initially the two techniques were compared and Raman was chosen based on its higher spatial and spectral resolution. The sample preparation and spectral measurement procedures were optimised and all samples were formalin fixed paraffin processed, dewaxed using xylene, and measured on calcium fluoride windows. Raman spectra were …
Septohippocampal Gabaergic Neurons Mediate The Altered Behaviors Induced By N-Methyl-D-Aspartate Receptor Antagonists., Jingyi Ma, Siew Kian Tai, L Stan Leung
Septohippocampal Gabaergic Neurons Mediate The Altered Behaviors Induced By N-Methyl-D-Aspartate Receptor Antagonists., Jingyi Ma, Siew Kian Tai, L Stan Leung
Physiology and Pharmacology Publications
We hypothesize that selective lesion of the septohippocampal GABAergic neurons suppresses the altered behaviors induced by an N-methyl-D-aspartate (NMDA) receptor antagonist, ketamine or MK-801. In addition, we hypothesize that septohippocampal GABAergic neurons generate an atropine-resistant theta rhythm that coexists with an atropine-sensitive theta rhythm in the hippocampus. Infusion of orexin-saporin (ore-SAP) into the medial septal area decreased parvalbumin-immunoreactive (GABAergic) neurons by ~80%, without significantly affecting choline-acetyltransferase-immunoreactive (cholinergic) neurons. The theta rhythm during walking, or the immobility-associated theta induced by pilocarpine, was not different between ore-SAP and sham-lesion rats. Walking theta was, however, more disrupted by atropine sulfate in ore-SAP than …
Changes In Serum Interleukin-33 Concentration Before And After Treatment With Pegylated Interferon Alfa-2a Plus Ribavirin In Patients With Chronic Hepatitis C Genotype 1b Infection., Bruno Cacopardo, Marilia Rita Pinzone, Filippo Palermo, Giuseppe Nunnari
Changes In Serum Interleukin-33 Concentration Before And After Treatment With Pegylated Interferon Alfa-2a Plus Ribavirin In Patients With Chronic Hepatitis C Genotype 1b Infection., Bruno Cacopardo, Marilia Rita Pinzone, Filippo Palermo, Giuseppe Nunnari
Department of Microbiology and Immunology Faculty Papers
BACKGROUND: IL-33 is a novel member of the IL-1 family, which has been shown to play an important role in T helper 2 (Th2)-associated immune responses. Recent studies have suggested a possible role for IL-33 in the pathogenesis of liver damage during acute and chronic hepatitis; furthermore, IL-33 may be involved in the development and progression of liver fibrosis.
OBJECTIVES: To evaluate serum IL-33 levels in a group of patients with chronic hepatitis C (CHC) genotype 1b at enrolment and after a course of pegylated (PEG)-IFN plus ribavirin.
PATIENTS AND METHODS: 60 patients with chronic hepatitis C (CHC) and 65 …