keyword
MENU ▼
Read by QxMD icon Read
search

Immunophenotyping

keyword
https://www.readbyqxmd.com/read/28340210/clinical-significance-of-isolated-myeloperoxidase-expression-in-pediatric-b-lymphoblastic-leukemia
#1
Matthew J Oberley, Sisi Li, Etan Orgel, Choo Phei Wee, Ashley Hagiya, Maurice R G O'Gorman
Objectives: Diagnosis of B-cell acute lymphoblastic leukemia (B-ALL) requires immunophenotypic evidence of B-lineage and absence of specific myeloid or T-lineage markers. Rare cases of otherwise typical B-ALL express myeloperoxidase (MPO) detectable by flow cytometry with an absence of other myeloid markers, but the clinical significance of this finding is not well studied. Methods: A retrospective cohort analysis of flow cytometry and clinical data was performed to investigate the clinical outcome of this specific group of patients...
March 15, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28338654/tfeb-vegfa-6p21-1-co-amplified-renal-cell-carcinoma-a-distinct-entity-with-potential-implications-for-clinical-management
#2
Sounak Gupta, Sarah H Johnson, George Vasmatzis, Binu Porath, Jeannette G Rustin, Priya Rao, Brian A Costello, Bradley C Leibovich, R Houston Thompson, John C Cheville, William R Sukov
A subset of renal cell carcinomas shows TFEB overexpression secondary to MALAT1-TFEB gene fusion. As alternate mechanisms of TFEB overexpression are likely to have the same effect, we sought to determine the frequency of amplification of TFEB and the adjacent VEGFA gene at 6p21.1. As patients with metastatic renal cell carcinomas are managed with anti-VEGF therapies, we retrospectively assessed therapeutic response in patients with amplified tumors. Amplification status was analyzed for 875 renal cell carcinomas from our institution, a consultative case and 794 cases from The Cancer Genome Atlas...
March 24, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28338651/dichotomy-in-intrahepatic-cholangiocarcinomas-based-on-histologic-similarities-to-hilar-cholangiocarcinomas
#3
Masayuki Akita, Kohei Fujikura, Tetsuo Ajiki, Takumi Fukumoto, Kyoko Otani, Takeshi Azuma, Tomoo Itoh, Yonson Ku, Yoh Zen
Intrahepatic cholangiocarcinomas were classified into two types based on their microscopic appearance. Tumors with histologic similarities to hilar cholangiocarcinomas (predominantly ductal adenocarcinomas with minor tubular components, if present, restricted to the invasive front) were defined as the perihilar type, whereas the others were classified as peripheral cholangiocarcinomas. Among the 47 cases examined in the present study, 26 (55%) were classified as the perihilar type, whereas 21 (45%) were the peripheral type...
March 24, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28337777/syringocystadenocarcinoma-papilliferum-clinicopathologic-analysis-of-ten-cases
#4
Yan Zhang, Yun-Yi Kong, Xu Cai, Xu-Xia Shen, Jin-Cheng Kong
BACKGROUND: Syringocystadenocarcinoma papilliferum (SCACP) is an exceedingly rare cutaneous adnexal neoplasm. We aimed to investigate the clinicopathologic and immunophenotypic features of SCACP, and to discuss the prognosis of this rare entity. METHOD: We retrospectively collected clinical, pathological and follow-up data of 10 cases with SCACP. RESULTS: There were 8 males and 2 females, with ages ranging from 26 to 74 years. The chest was most frequently involved...
March 23, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28333411/utility-of-peripheral-blood-immunophenotyping-by-flow-cytometry-in-the-diagnosis-of-pediatric-acute-leukemia
#5
Laura K Metrock, Ryan J Summers, Sunita Park, Scott Gillespie, Sharon Castellino, Glen Lew, Frank G Keller
BACKGROUND: Childhood acute leukemia is traditionally diagnosed from a bone marrow aspirate (BMA). New-onset acute leukemia patients do not always have visible circulating blasts in the peripheral blood (PB) at diagnosis. While the role of bone marrow flow cytometry for the diagnosis of acute leukemia is well established, the utility of PB flow cytometry (PBFC) is unknown. We performed a single-institution retrospective analysis to compare PBFC versus BMA in establishing or excluding a diagnosis of childhood acute leukemia...
March 23, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28332287/pretransplant-numbers-of-cd16-monocytes-as-a-novel-biomarker-to-predict-acute-rejection-after-kidney-transplantation-a-pilot-study
#6
Thierry P P van den Bosch, Luuk B Hilbrands, Rens Kraaijeveld, Nicolle H R Litjens, Farhad Rezaee, Daan Nieboer, Ewout W Steyerberg, Judith A van Gestel, Dave L Roelen, Marian C Clahsen-van Groningen, Carla C Baan, Ajda T Rowshani
Acute rejection is one of the major immunological determinants of kidney graft function and survival. Early biomarkers to predict rejection are lacking. Emerging evidence reveals a crucial role for the monocyte-macrophage lineage cells in the pathogenesis of rejection. We hypothesized that higher pre-transplant numbers of proinflammatory CD16+ monocytes can predict rejection. The study cohort consisted of 104 kidney transplant recipients (58 no-rejections and 46 biopsy-proven rejections), and 33 healthy individuals...
March 23, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28327848/-mesenchymal-stem-cells-definitions-culture-and-potential-applications
#7
Willy Ceron, Iván Lozada-Requena, Kiomi Ventocilla, Sandra Jara, Milagros Pinto, Marco Cabello, José L Aguilar
In recent years, mesenchymal stem cells (MSC) have become very important due to their high plasticity and their ability to release paracrine factors able to interact with various cell types, tissues and organs. The use of MSC in regenerative medicine became of vital importance, since they do not express histocompatibility MHC molecules class II nor costimulant molecules, and low expression of MHC class I, will not be rejected by individuals of same species, they could be used in an autologous, and eventually, allogeneic manner...
October 2016: Revista Peruana de Medicina Experimental y Salud Pública
https://www.readbyqxmd.com/read/28324286/prolymphocytic-leukemia-new-insights-in-diagnosis-and-in-treatment
#8
REVIEW
Aude Collignon, Anne Wanquet, Elsa Maitre, Edouard Cornet, Xavier Troussard, Thérèse Aurran-Schleinitz
PURPOSE OF REVIEW: We aimed to produce a comprehensive update on clinical and biological data regarding two rare lymphoid neoplasms, B and T prolymphocytic leukemias, and assess therapeutic management in the light of new molecular insights and the advent of targeted therapies. RECENT FINDINGS: B cell prolymphocytic leukemia (B-PLL) diagnosis remains challenging in the absence of clear immunophenotypic or cytogenetic signature and overlap with mantle cell lymphoma...
April 2017: Current Oncology Reports
https://www.readbyqxmd.com/read/28321774/intestinal-type-adenocarcinoma-classification-immunophenotype-molecular-features-and-differential-diagnosis
#9
Ilmo Leivo
Intestinal-type adenocarcinoma is the second most frequent sinonasal adenocarcinoma. High incidence of these tumors is seen among workers with occupational wood dust exposure, particularly of hardwood dusts. Intestinal-type adenocarcinoma has striking histomorphologic and immunophenotypic similarities with colorectal adenocarcinomas, but on the level of molecular pathologic mechanisms these tumors have their own specific features different from gastrointestinal tumors. This article provides an update on current histopathologic classification of intestinal-type adenocarcinomas, their immunophenotypic properties, recent advances in molecular pathologic features and differential diagnostic considerations...
March 20, 2017: Head and Neck Pathology
https://www.readbyqxmd.com/read/28320703/case-of-lymphadenopathy-with-lytic-bone-lesions
#10
Siddhesh Arun Kalantri, Uttam Kumar Nath, Debasis Banerjee, Maitreyee Bhattacharyya
Plasmablastic lymphoma, a rare highly aggressive non-Hodgkin's lymphoma subtype, often associated with HIV infection, is a close differential diagnosis of plasmablastic myeloma. The 2 conditions may be morphologically and immunophenotypically identical. However, differentiating between the 2 conditions is critical for adequate patient management. Herein, we describe an unusual case of plasmablastic myeloma with biclonal gammopathy which was initially diagnosed as plasmablastic lymphoma based on lymph node biopsy and immunohistochemistry (IHC) results...
March 20, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28320532/atypical-histiocytosis-in-red-squirrels-sciurus-vulgaris
#11
S H Smith, K Stevenson, J Del-Pozo, S Moss, A Meredith
Four red squirrels (Sciurus vulgaris) were subjected to necropsy examination over a 3-year period as part of a broader surveillance study. The squirrels presented with cutaneous, subcutaneous and/or internal swellings and nodules that consisted microscopically of sheets of atypical round cells and multinucleated giant cells. There was moderate anisokaryosis with rare mitoses. Nuclei ranged from oval to indented or C-shaped and some were bizarre, twisted or multilobulated. Many giant cells also had a bizarre morphology, with anisokaryosis within individual cells...
March 17, 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28319827/immunophenotypical-characterization-of-canine-mesenchymal-stem-cells-from-perivisceral-and-subcutaneous-adipose-tissue-by-a-species-specific-panel-of-antibodies
#12
Ana Ivanovska, Stefano Grolli, Paolo Borghetti, Francesca Ravanetti, Virna Conti, Elena De Angelis, Francesca Macchi, Roberto Ramoni, Paolo Martelli, Ferdinando Gazza, Antonio Cacchioli
Immunophenotypical characterization of mesenchymal stem cells is fundamental for the design and execution of sound experimental and clinical studies. The scarce availability of species-specific antibodies for canine antigens has hampered the immunophenotypical characterization of canine mesenchymal stem cells (MSC). The aim of this study was to select a panel of species-specific direct antibodies readily useful for canine mesenchymal stem cells characterization. They were isolated from perivisceral and subcutaneous adipose tissue samples collected during regular surgeries from 8 dogs...
February 27, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28319526/anaplastic-variant-of-diffuse-large-b-cell-lymphoma-displays-intricate-genetic-alterations-and-distinct-biological-features
#13
Mingyang Li, Yixiong Liu, Yingmei Wang, Gang Chen, Qiongrong Chen, Hualiang Xiao, Fang Liu, Chubo Qi, Zhou Yu, Xia Li, Linni Fan, Ying Guo, Qingguo Yan, Shuangping Guo, Zhe Wang
Anaplastic diffuse large B-cell lymphoma (A-DLBCL) is a rare morphologic variant characterized by the presence of polygonal, bizarre-shaped tumor cells. However, the clinicopathologic and genetic features of this variant are largely unknown. In this study, we investigated 35 cases of A-DLBCL with regard to their clinical, pathologic, and genetic characteristics. The age of the patients ranged from 23 to 89 years (median age, 62 y) with a male to female ratio of 23:12. Twenty-two of 26 (85%) patients had Ann Arbor stage III or IV disease, and 17/26 (65%) patients had a high-intermediate or high International Prognostic Index score...
March 17, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28318150/expression-of-cd4-is-correlated-with-an-unfavorable-prognosis-in-wild-type-npm1-flt3-itd-negative-cytogenetically-normal-adult-acute-myeloid-leukemia
#14
R J Guo, E G Atenafu, A D Schimmer, M D Minden, H Chang
INTRODUCTION: In the cytogenetically normal population of AML (CN-AML), FLT3-ITD-positive and wild-type NPM1 is correlated with a worse outcome, and FLT3-ITD-negative with NPM1-mut is correlated with a better outcome. This leaves a large subpopulation of CN-AML patients without NPM1 or FLT3-ITD mutations with heterogeneous outcomes with overall survivals (OS) ranging from several weeks to years. Therefore, new prognostic markers are needed to better risk stratify this subset of patients...
March 20, 2017: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/28317291/intravascular-t-cell-lymphoma-a-rare-poorly-characterized-entity-with-cytotoxic-phenotype
#15
Tara L Sharma, Gabrielle A Yeaney, Payam Soltanzadeh, Yuebing Li, Claudiu V Cotta
Intravascular T-cell lymphomas are rare, poorly characterized lesions. We discuss the clinical, radiologic and especially the laboratory characteristics of a lesion which presented in a 62-year-old woman with a history of progressive CNS abnormalities. Throughout the course of the disease, radiologic findings consisted mainly of multifocal mixed areas of ischemia and vasogenic edema involving cortical and subcortical regions. A brain biopsy identified an abnormal T-cell population confined to lumens of vessels...
March 20, 2017: Neuropathology: Official Journal of the Japanese Society of Neuropathology
https://www.readbyqxmd.com/read/28316421/immunophenotyping-of-blood-mononuclear-cells-from-p-berghei-nk-65-infected-and-immunized-balb-c-mice
#16
Vineet Kumar, Aruna Rakha, Ruchika Saroa, Upma Bagai
The present study demonstrates the alterations in the frequencies of helper, cytotoxic and suppressor T cells in blood of P. berghei infected and TPA immunized rodent host towards the induction of protective immune response. Statistically significant (p < 0.005) number of CD4(+) T cells was recorded on D9 [Post Challenge (PC)] meanwhile CD4(+) Treg cells were found to be declined in immunized mice as compared to infected. This increase in frequencies of T helper cells points towards the stimulation of strong Th2 immune response in immunized mice...
March 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28316130/simultaneous-use-of-multiplex-ligation-dependent-probe-amplification-assay-and-flow-cytometric-dna-ploidy-analysis-in-patients-with-acute-leukemia
#17
Virginia Reyes-Núñez, Evelyn Galo-Hooker, Beatriz Pérez-Romano, Ricardo E Duque, Alejandro Ruiz-Arguelles, Javier Garcés-Eisele
BACKGROUND: The aim of this work was to simultaneously use multiplex ligation-dependent probe amplification assay and flow cytometric DNA ploidy analysis to detect aneuploidy in patients with newly diagnosed acute leukemia. METHODS: Multiplex ligation-dependent probe amplification assay and propidium iodide flow cytometric DNA ploidy analysis were used to test samples from 53 consecutive patients with newly diagnosed acute leukemia referred to our laboratory for immunophenotyping...
March 18, 2017: Cytometry. Part B, Clinical Cytometry
https://www.readbyqxmd.com/read/28315938/the-relationship-between-breast-cancer-molecular-subtypes-and-mast-cell-populations-in-tumor-microenvironment
#18
Anna Glajcar, Joanna Szpor, Agnieszka Pacek, Katarzyna Ewa Tyrak, Florence Chan, Joanna Streb, Diana Hodorowicz-Zaniewska, Krzysztof Okoń
Mast cells (MCs) are a part of the innate immune system. The MC functions toward cancer are partially based on the release of chymase and tryptase. However, the MC effect on breast cancer is controversial. The aim of our study was to investigate the presence of MCs in breast cancer tumors of different molecular subtypes and their relationships with other pathological prognostic factors. Tryptase- and chymase-positive mast cell densities were evaluated by immunohistochemistry in 108 primary invasive breast cancer tissue samples...
March 18, 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28298159/biological-behavior-of-human-nucleus-pulposus-mesenchymal-stem-cells-in-response-to-changes-in-the-acidic-environment-during-intervertebral-disc-degeneration
#19
Jianjun Liu, Hui Tao, Cailiang Shen, Xiaoying Liu, Hanbang Wang, Fulong Dong, Renjie Zhang, Jie Li, Peng Ge, Peiwen Song, Huaqing Zhang, Peng Xu
An acidic environment is vital for the maintenance of cellular activities but can be affected tremendously during intervertebral disc degeneration. The effect of changes in the acidity of the environment on human nucleus pulposus mesenchymal stem cells (NP-MSCs) is unknown, however. Thus, this study aimed to observe the biological effects of acidic conditions mimicking a degenerated intervertebral disc on NP-MSCs in vitro. NP-MSCs were isolated from patients with lumbar disc herniation and were further identified by their immunophenotypes and multilineage differentiation...
March 16, 2017: Stem Cells and Development
https://www.readbyqxmd.com/read/28296680/primitive-neuroectodermal-tumors-of-the-female-genital-tract-a-morphologic-immunohistochemical-and-molecular-study-of-19-cases
#20
Sarah Chiang, Matija Snuderl, Sakiko Kojiro-Sanada, Ariadna Quer Pi-Sunyer, Dean Daya, Tohru Hayashi, Luisanna Bosincu, Fumihiro Ogawa, Andrew E Rosenberg, Lars-Christian Horn, Lu Wang, A John Iafrate, Esther Oliva
Primary primitive neuroectodermal tumor (PNET) of the female genital tract is rare, and its proper classification remains unclear. The clinical, histologic, and immunophenotypic features as well as EWSR1 rearrangement status of 19 gynecologic PNETs, including 10 ovarian, 8 uterine, and 1 vulvar tumors, are herein reported. Patient age ranged from 12 to 68 years, with a median age of 20 and 51 years among those with ovarian and uterine PNETs, respectively. Morphologic features of central nervous system (CNS) tumors were seen in 15 PNETs, including 9 medulloblastomas, 3 ependymomas, 2 medulloepitheliomas, and 1 glioblastoma, consistent with central PNET...
March 14, 2017: American Journal of Surgical Pathology
keyword
keyword
7182
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"