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https://www.readbyqxmd.com/read/28535006/gastric-cancer-metabolic-and-metabolomics-perspectives-review
#1
Shiyu Xiao, Liya Zhou
Gastric cancer is one of the most malignant tumors worldwide and remains a major health threat in Asia-Pacific regions, while its pathological mechanism is generally unknown. Recent research has advanced the understanding of the relationship between metabolic reprogramming and carcinogenesis. In particular, metabolic regulation and cancer research are being further brought into sharp focus with the emergence of metabolomics. Not only can metabolomics provide global information on metabolic profiles of specific tumors, but it can also act as a promising tool to discover biomarkers regarding diagnosis, metastatic surveillance and chemotherapeutic sensitivity prediction...
May 16, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28533475/first-line-palliative-her2-targeted-therapy-in-her2-positive-metastatic-breast-cancer-is-less-effective-after-previous-adjuvant-trastuzumab-based-therapy
#2
Hánah N Rier, Mark-David Levin, Joost van Rosmalen, Monique M E M Bos, Jan C Drooger, Paul de Jong, Johanneke E A Portielje, Elisabeth M P Elsten, Albert-Jan Ten Tije, Stefan Sleijfer, Agnes Jager
BACKGROUND: Survival of patients with human epidermal growth receptor 2 (HER2)-positive metastatic breast cancer (MBC) has improved dramatically since trastuzumab has become available, although the disease eventually progresses in most patients. This study investigates the outcome (overall survival [OS] and time to next treatment [TNT]) in MBC patients pretreated with trastuzumab in the adjuvant setting (TP-group) compared with trastuzumab-naïve patients (TN-group) in order to investigate the possibility of trastuzumab resistance...
May 22, 2017: Oncologist
https://www.readbyqxmd.com/read/28527894/hfe-genotype-affects-exosome-phenotype-in-cancer
#3
Oliver D Mrowczynski, A B Madhankumar, Becky Slagle-Webb, Sang Y Lee, Brad E Zacharia, James R Connor
Neuroblastoma is the third most common childhood cancer, and timely diagnosis and sensitive therapeutic monitoring remain major challenges. Tumor progression and recurrence is common with little understanding of mechanisms. A major recent focus in cancer biology is the impact of exosomes on metastatic behavior and the tumor microenvironment. Exosomes have been demonstrated to contribute to the oncogenic effect on the surrounding tumor environment and also mediate resistance to therapy. The effect of genotype on exosomal phenotype has not yet been explored...
May 17, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28527249/-sociodemographic-and-clinical-characteristics-of-patients-infected-with-leptospira-spp-treated-at-four-hospitals-in-medell%C3%A3-n-colombia-2008-2013
#4
Lina María Echeverri-Toro, Sara Penagos, Laura Castañeda, Pablo Villa, Santiago Atehortúa, Faiver Ramírez, Carlos Restrepo, Sigifredo Ospina, Yuli Agudelo, Alicia Hidrón, Paola Agudelo, Eliana Valderrama, Carlos Andrés Agudelo
INTRODUCTION: Leptospirosis remains a significant health problem in tropical regions including Latin America, where its presentation is 100 times higher than that observed in other regions of the world. Mortality reaches 10% in severe cases. Its diagnosis is challenging because clinical manifestations during the initial phase are non-specific and because of limited availability of diagnostic tests. OBJECTIVE: To describe the demographic and clinical characteristics and the outcomes in hospitalized patients with leptospirosis...
January 24, 2017: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/28526779/the-phenotypic-spectrum-of-nephropathies-associated-with-mutations-in-diacylglycerol-kinase-%C3%AE%C2%B5
#5
Karolis Azukaitis, Eva Simkova, Mohammad Abdul Majid, Matthias Galiano, Kerstin Benz, Kerstin Amann, Clemens Bockmeyer, Radha Gajjar, Kevin E Meyers, Hae Il Cheong, Bärbel Lange-Sperandio, Therese Jungraithmayr, Véronique Frémeaux-Bacchi, Carsten Bergmann, Csaba Bereczki, Monika Miklaszewska, Dorottya Csuka, Zoltán Prohászka, Patrick Gipson, Matthew G Sampson, Mathieu Lemaire, Franz Schaefer
The recent discovery of mutations in the gene encoding diacylglycerol kinase ε (DGKE) identified a novel pathophysiologic mechanism leading to HUS and/or MPGN. We report ten new patients from eight unrelated kindreds with DGKE nephropathy. We combined these cases with all previously published cases to characterize the phenotypic spectrum and outcomes of this new disease entity. Most patients presented with HUS accompanied by proteinuria, whereas a subset of patients exhibited clinical and histologic patterns of MPGN without TMA...
May 19, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28524153/transcriptome-analysis-of-mirna-lncrna-mrna-interactions-in-the-malignant-transformation-process-of-gastric-cancer-initiation
#6
Y Mao, R Liu, H Zhou, S Yin, Q Zhao, X Ding, H Wang
Gastric cancer is a common heterogeneous malignancy that is pathologically characterized by the development of chronic atrophic gastritis and dysplasia of the epithelium. The pathogenic mechanisms at the molecular level are completely unclear. In the present study, we first address the expression network and miRNA-lncRNA-mRNA interaction in the malignant transformation process from normal mucosa and atrophic gastritis to a tumor. First, the long non-coding RNA (lncRNA), micro RNA (miRNA) and messenger RNA (mRNA) expression profiles of normal gastric mucosa, atrophic gastritis, gastric cancer and the peri-tumor tissues were analyzed using microarrays...
May 19, 2017: Cancer Gene Therapy
https://www.readbyqxmd.com/read/28524002/mirna-expression-in-bladder-cancer-and-their-potential-role-in-clinical-practice
#7
Ana Blanca, Liang Cheng, Rodolfo Montironi, Holger Moch, Francesco Massari, Michelangelo Fiorentino, Maria Rosaria Raspollini, Marina Scarpelli, Antonio Lopez-Beltran
To date more than 3000 miRNA sequences have been described in humans and reg¬istered at miRBase since their discovery. However, the functions of only a few of these miRNAs have been experimentally determined using deep sequencing technology. Aberrant miRNA expression has been associated with differentiation, invasion and metastasis in several cancers. In this context, recent reports have suggested that miRNAs play important roles in the regulation of target genes by binding to complementary regions of messenger transcripts to repress their translation or regulate degradation...
May 18, 2017: Current Drug Metabolism
https://www.readbyqxmd.com/read/28523551/epigenetic-mechanisms-of-gene-regulation-in-amyotrophic-lateral-sclerosis
#8
Alba Jimenez-Pacheco, Jaime M Franco, Soledad Lopez, Juan Miguel Gomez-Zumaquero, Maria Magdalena Leal-Lasarte, Diana E Caballero-Hernandez, Marta Cejudo-Guillén, David Pozo
Despite being clinically described 150 years ago, the mechanisms underlying amyotrophic lateral sclerosis (ALS) pathogenesis have not yet been fully understood. Studies in both animal models of ALS and human patients reveal a plethora of alterations such as increased glutamate-mediated excitotoxicity, redox stress, increased apoptosis, defective axonal transport, protein-misfolding events, mitochondrial impairment and sustained unregulated immune responses. Regardless of being sporadic or familiar ALS, the final outcome at the cellular level is the death of upper and lower motor neurons, and once diagnosed, ALS is typically lethal within the next 5 years...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28523440/assessing-and-modifying-coronary-artery-disease-risk-in-women
#9
REVIEW
Amy Sarma, Nandita S Scott
Despite continued advances in the field, cardiovascular disease remains the leading cause of death in women in the USA with an annual mortality rate that has remained higher for women as compared to men. The factors leading to this sex difference remain incompletely understood. Likely contributors include atypical symptoms at presentation and lack of recognition of cardiovascular risk by women and their providers alike. In addition, women have a higher burden of comorbidities at the time of disease diagnosis and can have differential pathophysiological mechanisms of their acute events...
July 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28522990/animal-models-for-tuberculosis-in-translational-and-precision-medicine
#10
REVIEW
Lingjun Zhan, Jun Tang, Mengmeng Sun, Chuan Qin
Tuberculosis (TB) is a health threat to the global population. Anti-TB drugs and vaccines are key approaches for TB prevention and control. TB animal models are basic tools for developing biomarkers of diagnosis, drugs for therapy, vaccines for prevention and researching pathogenic mechanisms for identification of targets; thus, they serve as the cornerstone of comparative medicine, translational medicine, and precision medicine. In this review, we discuss the current use of TB animal models and their problems, as well as offering perspectives on the future of these models...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28516000/role-of-a-dual-splicing-and-amino-acid-code-in-myopia-cone-dysfunction-and-cone-dystrophy-associated-with-l-m-opsin-interchange-mutations
#11
Scott H Greenwald, James A Kuchenbecker, Jessica S Rowlan, Jay Neitz, Maureen Neitz
PURPOSE: Human long (L) and middle (M) wavelength cone opsin genes are highly variable due to intermixing. Two L/M cone opsin interchange mutants, designated LIAVA and LVAVA, are associated with clinical diagnoses, including red-green color vision deficiency, blue cone monochromacy, cone degeneration, myopia, and Bornholm Eye Disease. Because the protein and splicing codes are carried by the same nucleotides, intermixing L and M genes can cause disease by affecting protein structure and splicing...
May 2017: Translational Vision Science & Technology
https://www.readbyqxmd.com/read/28515593/role-of-penumbra-mechanical-thrombectomy-device-in-acute-dural-sinus-thrombosis
#12
Suraj Mammen, Shyamkumar Nidugala Keshava, Vinu Moses, Sanjith Aaron, Munawwar Ahmed, George K Chiramel, Sunithi E Mani, Mathew Alexander
BACKGROUND: In dural venous sinus thrombosis (DVST), the mortality ranges 5-30%. Deep venous system involvement and septic dural sinus thrombosis have a higher mortality rate. In acute occlusion, collateral flow may not be established, which may result in significant edema and mass effect. Endovascular interventions may be considered as a treatment option in appropriate high-risk patients with DVST. MATERIALS AND METHODS: Eight patients with magnetic resonance imaging (MRI)-confirmed dural sinus thrombosis, who did not respond to the conventional standard medical treatment, were subsequently treated with mechanical thrombectomy using the Penumbra System(®)...
January 2017: Indian Journal of Radiology & Imaging
https://www.readbyqxmd.com/read/28513632/how-to-stomach-an-epigenetic-insult-the-gastric-cancer-epigenome
#13
REVIEW
Nisha Padmanabhan, Toshikazu Ushijima, Patrick Tan
Gastric cancer is a deadly malignancy afflicting close to a million people worldwide. Patient survival is poor and largely due to late diagnosis and suboptimal therapies. Disease heterogeneity is a substantial obstacle, underscoring the need for precision treatment strategies. Studies have identified different subgroups of gastric cancer displaying not just genetic, but also distinct epigenetic hallmarks. Accumulating evidence suggests that epigenetic abnormalities in gastric cancer are not mere bystander events, but rather promote carcinogenesis through active mechanisms...
May 17, 2017: Nature Reviews. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28509123/serum-calcitriol-levels-in-a-patient-with-x-linked-hypophosphatemia-complicated-by-autosomal-dominant-polycystic-kidney-disease
#14
Satomi Kajita, Takehisa Yamamoto, Naoko Tsugawa, Hirohumi Nakayama, Takuo Kubota, Toshimi Michigami, Keiichi Ozono
Serum calcitriol [1,25(OH)2D] levels are low normal in the presence of hypophosphatemia in X-linked dominant hypophosphatemic rickets (XLH) due to elevated serum fibroblast growth factor 23 (FGF23) levels. We report a peculiar finding of markedly elevated serum 1,25(OH)2D levels in a patient with XLH complicated by autosomal dominant polycystic kidney disease (ADPKD) and retinitis pigmentosa (RP). She was diagnosed with XLH, ADPKD and RP at the age of 5, 13 and 15 years, respectively. After the diagnosis of ADPKD, the 1,25(OH)2D levels increased up to 282 pg/mL treated with a pharmacological dose of 1αOHD3 (1αOHD3)...
May 2017: CEN Case Reports
https://www.readbyqxmd.com/read/28508359/evolving-relevance-of-neuroproteomics-in-alzheimer-s-disease
#15
Simone Lista, Henrik Zetterberg, Sid E O'Bryant, Kaj Blennow, Harald Hampel
Substantial progress in the understanding of the biology of Alzheimer's disease (AD) has been achieved over the past decades. The early detection and diagnosis of AD and other age-related neurodegenerative diseases, however, remain a challenging scientific frontier. Therefore, the comprehensive discovery (relating to all individual, converging or diverging biochemical disease mechanisms), development, validation, and qualification of standardized biological markers with diagnostic and prognostic functions with a precise performance profile regarding specificity, sensitivity, and positive and negative predictive value are warranted...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28508357/biofluid-proteomics-and-biomarkers-in-traumatic-brain-injury
#16
Safa Azar, Anwarul Hasan, Richard Younes, Farah Najdi, Lama Baki, Hussein Ghazale, Firas H Kobeissy, Kazem Zibara, Stefania Mondello
Traumatic brain injury (TBI) is an injury to the brain caused by an external mechanical force, affecting millions of people worldwide. The disease course and prognosis are often unpredictable, and it can be challenging to determine an early diagnosis in case of mild injury as well as to accurately phenotype the injury. There is currently no cure for TBI-drugs having failed repeatedly in clinical trials-but an intense effort has been put to identify effective neuroprotective treatment. The detection of novel biomarkers, to understand more of the disease mechanism, facilitates early diagnosis, predicts disease progression, and develops molecularly targeted therapies that would be of high clinical interest...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28504690/microrna-645-is-an-oncogenic-regulator-in-colon-cancer
#17
S T Guo, X Y Guo, J Wang, C Y Wang, R H Yang, F H Wang, X Y Li, H Hondermarck, R F Thorne, Y F Wang, L Jin, X D Zhang, C C Jiang
Despite advances in early diagnosis and the development of molecularly targeted therapy, curative treatment of colon cancer once it has metastasized is yet to be accomplished. This is closely associated with deregulated CRC cell proliferation and resistance to apoptosis. Here we reveal that upregulation of microRNA-645 (miR-645) through DNA copy number gain is responsible for enhanced proliferation and resistance to apoptosis in colon cancer. MiR-645 was upregulated in most colon cancer tissues related to adjacent normal mucosa...
May 15, 2017: Oncogenesis
https://www.readbyqxmd.com/read/28504663/a-new-time-dependent-approach-for-assessment-of-the-impact-of-invasive-aspergillosis-shows-effect-on-short-but-not-on-long-term-survival-of-patients-with-aml-or-high-risk-mds
#18
R J van de Peppel, P A von dem Borne, S le Cessie, M G J de Boer
Invasive aspergillosis (IA) has been reported to yield high mortality rates. Patients with an unfavourable prognostic haematological disease not only have a higher probability of developing IA but are also more likely to die due to causes directly related to the underlying disease. This complexity of risk mechanisms confounds the causal interpretation of IA occurrence and mortality. Full consideration of the changing patient characteristics over time is necessary to obtain reliable estimates of the correlation of IA with mortality...
May 15, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28502589/a-case-of-a-novel-mutation-in-hnf1%C3%AE-related-maturity-onset-diabetes-of-the-young-type-5-with-diabetic-kidney-disease-complication-in-a-chinese-family
#19
Yiting Wang, Yingwang Zhao, Junlin Zhang, Yuxiang Yang, Fang Liu
AIMS: Precise diagnosis of maturity-onset diabetes of the young (MODY) has proven valuable for understanding mechanism of diabetes and selecting optimal therapy. A proband and her mother with diabetic kidney disease (DKD) were studied to investigate potential genes responsible for diabetes and different severity of DKD between the parent and offspring. METHODS: The family with suspected MODY underwent mutational analyses by the whole exome sequencing (WES). Candidate pathogenic variants were validated by Sanger sequencing and tested for co-segregation...
November 15, 2016: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/28502522/human-herpesvirus-8-related-diseases-histopathologic-diagnosis-and-disease-mechanisms
#20
REVIEW
Matthew Auten, Annette S Kim, Kyle T Bradley, Flavia G Rosado
The emergence of HIV/AIDS more than three decades ago led to an increased incidence of diseases caused by HHV8 co-infection, particularly Kaposi sarcoma, primary effusion lymphoma, and multicentric Castleman disease. Over time, the development of highly effective AIDS therapies has resulted in a decreased incidence of HHV8-associated entities, which are now more commonly found in patients with undiagnosed and/or untreated AIDS. Due to their rarity, some of these diseases may be difficult to recognize without appropriate clinical information...
April 6, 2017: Seminars in Diagnostic Pathology
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