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cell studies

Marlen Vitales-Noyola, Rita Martínez-Martínez, Juan P Loyola-Rodríguez, Lourdes Baranda, Perla Niño-Moreno, Roberto González-Amaro
BACKGROUND: Periodontal disease is chronic inflammatory process that affects the attachment structures of the teeth and constitutes a significant cause of tooth loss in adults. Although different bacteria play an important role in the triggering of this condition, the progression and severity of the disease are strongly affected by the host immune response, which is under the control of different immune-regulatory mechanisms, including T regulatory (Treg) cells. The aim of this study was to assess the frequency and function of CD69(+) Treg lymphocytes in patients with chronic periodontal disease...
October 19, 2016: Journal of Oral Pathology & Medicine
Sarah F M Pilati, Bianca C Bianco, Daniella S C Vieira, Filipe Modolo
OBJECTIVE: This study aimed to determine the histopathological findings in actinic cheilitis (AC) and lip squamous cell carcinomas (LSCC) diagnosed at Federal University of Santa Catarina in order to attempt to predict the evolution from AC to LSCC based on the comparison of two dysplasia classification systems. METHODS: Histopathological features were evaluated according to the World Health Organization classification of dysplasia and binary system of classification...
October 19, 2016: Oral Diseases
Sharon L I Wong, Maria B Sukkar
Secreted protein acidic and rich in cysteine (SPARC) is a matricellular protein which regulates interactions between cells and their surrounding extracellular matrix (ECM), and thus governs fundamental cellular functions such as cell adhesion, proliferation and differentiation. SPARC also regulates the expression and activity of numerous growth factors and matrix metalloproteinases essential for ECM degradation and turnover. Studies in SPARC-null mice have revealed a critical role for SPARC in tissue development, injury and repair, and in the regulation of the immune response...
October 19, 2016: British Journal of Pharmacology
Ulku Aka Akturk, Dilek Ernam, Makbule Ozlem Akbay, Nagihan Durmus Koçak, Erhan Ogur, Ilim Irmak
OBJECTIVES: Pleural effusion is a common diagnostic and clinical problem. The differential diagnosis of pleural effusion may be difficult and may require several procedures, including invasive ones. Certain studies have investigated biochemical parameters to facilitate the diagnosis of exudative pleural effusion; however, it remains a challenging problem in clinical practice. We aimed to investigate the potential role of the neutrophil-lymphocyte ratio, which can be easily obtained by determining the cell count of the pleural fluid, in the differential diagnosis of exudative pleural effusion...
October 1, 2016: Clinics
Ademar Francisco de Oliveira, Gêssyca Adryene de Menezes Silva, Débora Milenna Xavier Almeida
Amyotrophic lateral sclerosis is a progressive and fatal neurodegenerative disease characterized by the degeneration of motor neurons, which are the central nervous system cells that control voluntary muscle movements. The excessive salivation (sialorrhea) is present in approximately 50% of amyotrophic lateral sclerosis cases. Thus, some alternative therapeutic methods are sought, such as anticholinergic drugs and surgery. Recently the use of botulinum toxin applied at a midpoint of the salivary glands, often guided by ultrasound, have demonstrated positive results...
July 2016: Einstein
Sérgio Monteiro de Almeida, Indianara Rotta, Arnaldo José de Conto, Dario Antonelli, Carlos Dabdoub Roda, Edna Yoshiko Yamada, Gisele M B Singer
Objective: To define how to best handle cerebrospinal fluid (CSF) specimens to obtain the highest positivity rate for the diagnosis of malignancy, comparing two different methods of cell concentration, sedimentation and cytocentrifugation. Methods: A retrospective analysis of 411 CSF reports. Results: This is a descriptive comparative study. The positive identification of malignant CSF cells was higher using the centrifuge than that using the Suta chamber (27...
October 2016: Arquivos de Neuro-psiquiatria
Sérgio Monteiro de Almeida, Sônia Mara Raboni, Meri Bordignon Nogueira, Luine R Renaud Vidal
The presence of hemoglobin in samples are considered an important inhibitory factor for polymerase chain reaction (PCR). The aim of this study was to examine the influence of red blood cells (RBC)s in cerebrospinal fluid (CSF) as an inhibitory factor to reverse transcription polymerase chain reaction (RT-PCR) for enteroviruses (EV). Forty-four CSF samples from patients showing characteristics of viral meningitis were assessed for EV by RT-PCR. Viral RNA extracted with guanidine isothyocianate buffer and virus detection was performed by in-house nested PCR...
October 2016: Arquivos de Neuro-psiquiatria
Shane A Grace, Angela M Sutton, Eric S Armbrecht, Claudia I Vidal, Ilana S Rosman, Maria Y Hurley
Langerhans cell histiocytosis (LCH) is a proliferative disorder of Langerhans cells that can be challenging to distinguish histologically from Langerhans cell (LC) hyperplasia, seen in a variety of inflammatory dermatoses. Lesional cells in both entities demonstrate positive staining for CD1a and S100. Previous studies have demonstrated positive staining of fascin, CD31, and p53 in cases of LCH, but currently, no studies have compared the staining profiles of these markers between LCH and LC hyperplasia. The authors compared immunohistochemical staining profiles of LCH (n = 15) and various inflammatory dermatoses with LC hyperplasia (n = 15) using fascin, CD31, and p53...
October 18, 2016: American Journal of Dermatopathology
Chao Ji, Yue Zhang, Patricia Heller, Ying Guo
Melanocytic matrical carcinoma is a very uncommon malignant neoplasm with follicular differentiation. The lesion often presents as a solitary nodule on sun-exposed skin of elderly patients. Histopathologically, it is characterized by proliferation of atypical matrical cells admixed with an increased number of melanocytes, and some atypical matrical cells may have cytoplasmic pigment. When melanocytic proliferation or melanin pigment is prominent, melanocytic metrical carcinoma can mimic melanoma. Here, we present a novel case of melanocytic matrical carcinoma mimicking melanoma in an 80-year-old man with our findings in histopathologic and immunohistochemical study...
October 18, 2016: American Journal of Dermatopathology
Anastasia M Konstantinova, Liubov Kyrpychova, Irena E Belousova, Dominic V Spagnolo, Denisa Kacerovska, Michal Michal, Katrin Kerl, Dmitry V Kazakov
The normal histology of anogenital mammary-like glands (AGMLG) has been studied previously, but some aspects, including glandular depth, presence of columnar epithelium resembling columnar cell change/hyperplasia as defined in mammary pathology, and distribution of elastic fibers, have not been previously investigated. To address these issues, we studied 148 AGMLG identified in 133 paraffin blocks sampled from 64 vulvar wide excision or vulvectomy specimens (64 patients, various indications for surgery). The depth of AGMLG ranged from 0...
October 18, 2016: American Journal of Dermatopathology
Mohammad-Ali Yazdani Abyaneh, Peter Engel, Andrzej Slominski, Bruce Ragsdale, Richard Agag, Daniel Cramer, J Andrew Carlson
BACKGROUND: Giant basal cell carcinomas (GBCCs), (BCC ≥ 5 cm), are often painless, destructive tumors resulting from poorly understood patient neglect. OBJECTIVES: To elucidate etiopathogenic factors distinguishing GBCC from basal cell carcinoma (BCC) and identify predictors for disease-specific death (DSD). METHODS: Case-control study examining clinicopathologic and neuroactive factors (β-endorphin, met-enkephalin, serotonin, adrenocorticotropic hormone, and neurofilament expression) in GBCC and BCC...
October 18, 2016: American Journal of Dermatopathology
Parnian Ahmadi Moghaddam, Kristine M Cornejo, Lloyd Hutchinson, Keith Tomaszewicz, Karen Dresser, April Deng, Patrick OʼDonnell
Merkel cell carcinoma (MCC) is a rare primary cutaneous neuroendocrine tumor that typically occurs on the head and neck of the elderly and follows an aggressive clinical course. Merkel cell polyomavirus (MCPyV) has been identified in up to 80% of cases and has been shown to participate in MCC tumorigenesis. Complete spontaneous regression of MCC has been rarely reported in the literature. We describe a case of a 79-year-old man that presented with a rapidly growing, 3-cm mass on the left jaw. An incisional biopsy revealed MCC...
October 12, 2016: American Journal of Dermatopathology
Hanseol Kim, Jihye Ryu, Chaeyoung Lee
A genome-wide association study was conducted to identify expression quantitative trait loci (eQTL) for human telomerase.We tested the genetic associations of nucleotide variants with expression of the genes encoding human telomerase reverse transcriptase (hTERT) and telomerase RNA components (TERC) in lymphoblastoid cell lines derived from 373 Europeans.Our results revealed 6 eQTLs associated with hTERT (P < 5 × 10). One eQTL (rs17755753) was located in the intron 1 of the gene encoding R-spondin-3 (RSPO3), a well-known Wnt signaling regulator...
October 2016: Medicine (Baltimore)
Mohammad Adawi, Bishara Bisharat, Abdalla Bowirrat
BACKGROUND: Erdheim-Chester disease (ECD) is an uncommon aggressive, multisystem form of non-Langerhans' cell histocytosis, which was firstly reported by Jakob Erdheim and William chester in 1930. The disease pathological features encompass an aberrant multiplication, overproduction and accumulation of white blood cells called histiocytes within multiple tissues and organs. Herein, we present a case of ECD owing to the rarity of this disease (roughly 550 cases have been described in the literature to date)...
October 2016: Medicine (Baltimore)
Yi Cheng, Mu Jin, Xiuhua Dong, Lizhong Sun, Jing Liu, Rong Wang, Yanwei Yang, Peirong Lin, Siyu Hou, Yuehua Ma, Yuefeng Wang, Xudong Pan, Jiakai Lu, Weiping Cheng
BACKGROUND: Stanford type-A acute aortic dissection (AAD) is a severe cardiovascular disease demonstrating the characteristics of acute onset and rapid development, with high morbidity and mortality. The available evidence shows that preoperative acute lung injury (ALI) induced by Stanford type-A AAD is a frequent and important cause for a number of untoward consequences. However, there is no study assessing the incidence of preoperative ALI and its independent determinants before Standford type-A AAD surgery in Chinese adult patients...
October 2016: Medicine (Baltimore)
Li Lu, Menglin Wu, Longhao Sun, Weidong Li, Weihua Fu, Xuening Zhang, Tong Liu
BACKGROUND: In recent years, CD44 and CD133 have been identified as 2 common used cancer stem cell (CSC) markers in gastric cancer. However, the clinicopathological and prognostic value of these markers in gastric cancer remains controversial; moreover, there is lack of comparison of these 2 markers' roles in clinical applications. A systematic review and meta-analysis was conducted to elucidate these markers' clinicopathological features and association with prognosis in patients with gastric cancer...
October 2016: Medicine (Baltimore)
Rafael Sauter, Ruizhu Huang, Bruno Ledergerber, Manuel Battegay, Enos Bernasconi, Matthias Cavassini, Hansjakob Furrer, Matthias Hoffmann, Mathieu Rougemont, Huldrych F Günthard, Leonhard Held
Plasma HIV viral load is related to declining CD4 lymphocytes. The extent to which CD8 cells, in addition to RNA viral load, predict the depletion of CD4 cells is not well characterized so far. We examine if CD8 cell count is a prognostic factor for CD4 cell counts during an HIV infection.A longitudinal analysis is conducted using data from the Swiss HIV cohort study collected between January 2000 and October 2014. Linear mixed regression models were applied to observations from HIV-1-infected treatment naive patients (NAIVE) and cART-treated patients to predict the short-term evolution of CD4 cell counts...
October 2016: Medicine (Baltimore)
Kim Heang Ly, François Dalmay, Guillaume Gondran, Sylvain Palat, Holy Bezanahary, Anne Cypierre, Anne-Laure Fauchais, Eric Liozon
Although a glucocorticoid (GC)-sparing strategy is needed for patients with giant cell arteritis (GCA) suffering from refractory disease or serious treatment-related complications, evidence of efficacy in this setting of immunosuppressive drugs and biotherapies is lacking. Herein, we evaluated the GC-sparing effects and tolerability of addition of dapsone (DDS) to prednisone therapy in patients with GCA. We retrospectively assessed data on 18 GCA patients who received DDS as a first-line treatment (DDS-1 group) and 52 patients who received it as a second- or third-line treatment for refractory GCA, with or without excessive GC-related toxicity (DDS-2 group)...
October 2016: Medicine (Baltimore)
Vivian E Strong, Sepideh Gholami, Manish A Shah, Laura H Tang, Yelena Y Janjigian, Mark Schattner, Luke V Selby, Sam S Yoon, Erin Salo-Mullen, Zsofia K Stadler, David Kelsen, Murray F Brennan, Daniel G Coit
OBJECTIVE: The aim of this study was to describe postoperative outcomes of total gastrectomy at our institution for patients with hereditary diffuse gastric cancer (HDGC). BACKGROUND: HDGC, which is mainly caused by germline mutations in the E-cadherin gene (CDH1), renders a lifetime risk of gastric cancer of up to 70%, prompting a recommendation for prophylactic total gastrectomy. METHODS: A prospective gastric cancer database identified 41 patients with CDH1 mutation who underwent total gastrectomy during 2005 to 2015...
October 17, 2016: Annals of Surgery
Mary McGunigal, Jerry Liu, Tamara Kalir, Manjeet Chadha, Vishal Gupta
OBJECTIVES: High-risk histology including UPSC, CC, and high-grade (G3) endometrioid adenocarcinoma (EAC) have a worse prognosis compared to G1-2 EAC. It is unknown whether G3EAC outcomes are more similar to UPSC/CC or to G1-2 EAC. The purpose of this study was to compare overall survival (OS) among UPSC, CC, and G1-3 EAC, for International Federation of Gynecology and Obstetrics stages I to III. METHODS: The National Cancer Data Base was queried for patients diagnosed with International Federation of Gynecology and Obstetrics (1988 classification) Stage I-III UPSC, CC, and EAC from 1998 to 2012 who underwent surgery as definitive treatment...
October 18, 2016: International Journal of Gynecological Cancer
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