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Satoshi Matsuyama, Mohammad Rabiul Karim, Takeshi Izawa, Mitsuru Kuwamura, Jyoji Yamate
Macrophages are required during kidney development and appear in the initiation and propagation of renal injury. To establish baseline data, we analyzed the kinetics of the macrophage with different immunophenotypes in the developing rat kidney (fetus at 18 and 20 days, neonate at 1-21 days, and adult at 7-weeks old). Macrophages reacting to CD68, CD163, and MHC class II were identified in the cortex and medulla of the developing rat kidney. CD68+ macrophages appeared in the fetal kidney as early as fetal day 18, and the number increased gradually in the neonatal kidney, whereas MHC class II+ and CD163+ macrophages first appeared on neonatal days 4 and 8, respectively...
July 2018: Journal of Toxicologic Pathology
P C Gaspar, R C M Rudolf-Oliveira, L M Wildner, A C R de Moraes, M L Reis, R M da Silva, J Gonçalves, M L Bazzo, M C Santos-Silva
SETTING: Information about the sputum cells of pulmonary tuberculosis (PTB) patients is scarce. The analysis of sputum cells using optical microscopy (OM) is a well-established method, but it has some serious limitations. OBJECTIVE: To establish a new flow cytometry (FC) protocol for the leucocyte evaluation of sputum samples from PTB patients. DESIGN: A new FC protocol using 0.1% dithiothreitol and 0.5% paraformaldehyde was developed to fluidise sputum samples and kill Mycobacterium tuberculosis, respectively, to allow the analysis of sputum samples collected from TB patients...
September 1, 2018: International Journal of Tuberculosis and Lung Disease
Adrienn Lajko, Matyas Meggyes, Balazs Daniel Fulop, Noemi Gede, Dora Reglodi, Laszlo Szereday
PROBLEM: PACAP is a neuropeptide having a major relevance in the nervous system and in several peripheral organs including those of the reproductive system. PACAP-deficient mice have several morphological, biochemical, behavioral defects, and show reduced fertility. Female reproductive functions such as fertility, mating behavior, maternal behaviors, and implantation alterations have been widely investigated, but no comparative immune analyses are available in pregnant wild-type (WT) and PACAP knockout (KO) mice...
August 9, 2018: American Journal of Reproductive Immunology: AJRI
Mehdi Aleahmad, Alireza Ghanavatinejad, Mahmood Bozorgmehr, Mohammad-Reza Shokri, Shohreh Nikoo, Maryam Tavakoli, Somaieh Kazemnejad, Fazel Shokri, Amir-Hassan Zarnani
Background: It is more than sixty years that the concept of the fetal allograft and immunological paradox of pregnancy was proposed and in this context, several regulatory networks and mechanisms have been introduced so far. It is now generally recognized that mesenchymal stem cells exert potent immunoregulatory activity. In this study, for the first time, the potential impact of Menstrual blood Stem Cells (MenSCs), as surrogate for endometrial stem cells, on proliferative capacity of CD4+ T cells was tested...
July 2018: Avicenna Journal of Medical Biotechnology
Irene Moreno-Torres, Coral González-García, Marco Marconi, Aranzazu García-Grande, Luis Rodríguez-Esparragoza, Víctor Elvira, Elvira Ramil, Lucía Campos-Ruíz, Ruth García-Hernández, Fátima Al-Shahrour, Coral Fustero-Torre, Alicia Sánchez-Sanz, Antonio García-Merino, Antonio José Sánchez López
Background: Fingolimod is a functional sphingosine-1-phosphate antagonist approved for the treatment of multiple sclerosis (MS). Fingolimod affects lymphocyte subpopulations and regulates gene expression in the lymphocyte transcriptome. Translational studies are necessary to identify cellular and molecular biomarkers that might be used to predict the clinical response to the drug. In MS patients, we aimed to clarify the differential effects of fingolimod on T, B, and natural killer (NK) cell subsets and to identify differentially expressed genes in responders and non-responders (NRs) to treatment...
2018: Frontiers in Immunology
Dilip K Das
Some of the limitations of fine needle aspiration (FNA) in the cytodiagnosis of lymphoma include problems encountered in differentiating reactive hyperplasia from low-grade non-Hodgkin lymphoma (NHL), lower cytodiagnostic accuracy for NHL with a follicular (nodular) pattern and nodular sclerosis type of classical Hodgkin lymphoma (HL), and overlapping morphological features between T-cell-rich B-cell lymphoma (TCRBCL), anaplastic large cell lymphoma (ALCL), and HL. Immunocytochemistry may be of help in such situations...
July 2018: Journal of Cytology
Takashi Akasaka, Chiyuki Kishimori, Fumiyo Maekawa, Kayo Takeoka, Masahiko Hayashida, Hiroshi Gomyo, Tohru Murayama, Hitoshi Ohno
An 80-year-old man presented with the accumulation of pleural fluid in the right thoracic cavity. Serum electrophoresis revealed an M-component and immunofixation confirmed IgM/λ. The level of IgM was 1,526 mg/dL. Imaging studies showed an infiltrative condition of the ipsilateral lung parenchyma. The fluid contained abundant neoplastic cells with the morphological and immunophenotypic features of plasma cells, which expressed IgM/λ monoclonal immunoglobulins on the cell surface and in the cytoplasm. The karyotype was 48,XY,+3,add(9)(p13),+12,add(14)(q32),del(16)(q22),-18,+mar, and a series of fluorescence in situ hybridization studies demonstrated that the add(14) chromosome represented der(14)t(14;18)(q32;q21), at which the MALT1-immunoglobulin heavy-chain (IGH) fusion gene was localized...
August 8, 2018: Journal of Clinical and Experimental Hematopathology: JCEH
Fernanda Garcia Spina, Aída Gouvea, Regina Célia de Menezes Succi, Flavia Calanca, Lily Yin Weckx, Maria Teresa Terreri, Maria Aparecida Sakauchi Takano, Maria Isabel de Moraes-Pinto
BACKGROUND: Pertussis cases have increased worldwide and knowledge on immune response and cytokine profile after Tdap vaccine in immunodeficient adolescents is scarce. OBJECTIVE: To evaluate the immune response after Tdap in HIV-infected (HIV) and in healthy adolescents (CONTROL). METHODOLOGY: Thirty HIV adolescents with CD4 cell counts >200 and 30 CONTROLs were immunized with Tdap, after a prior whole-cell DTP vaccine primary scheme...
August 4, 2018: Vaccine
Ding-Bao Chen, Dan-Hua Shen, Shen-Miao Yang, Xin-Zhi Fang
BACKGROUND: To study the effects of splenectomy on treatment and diagnosis of tumours of lymphoid tissue of the spleen. METHODS: Fifty-three cases were reviewed from Peking University People's Hospital from 2002 to 2017. According to WHO classification of tumours of haematopoietic and lymphoid tissues (2008) and classification updated (2016), the cases were studied by microscopy, immunohistochemistry and in situ hybridization, combined with the bone marrow biopsy and clinical examination...
July 27, 2018: Pathology, Research and Practice
Peng-Fei Wen, Min Zhang, Ting-Ting Wang, Hong-Jie Liu, Wen-Yan Zhang, Wei-Ping Liu, Lin Wang
BACKGROUND: Hydroa vacciniforme-like lymphoproliferative disorder (HVLPD) is a rare Epstein-Barr virus (EBV)-associated lymphoma that mainly affects children. OBJECTIVES: To examine the similarities and differences in the clinical pathological features, EBV infection status, and gene rearrangements in adults and children patients with HVLPD. METHODS: We compared the clinical manifestations, histopathology, immunophenotypical features, EBV infection status, and T-cell receptor gene rearrangements in the adult and children HVLPD groups...
August 6, 2018: American Journal of Dermatopathology
Salma Machan, Raúl Córdoba, Nerea Carvajal, Luis Requena, Miguel Ángel Piris, Fabio Facchetti, Socorro María Rodríguez-Pinilla
Peripheral T-cell lymphoma (PTCL), not otherwise specified (NOS) is a diagnosis of exclusion, showing extreme cytological and phenotypic heterogeneity. Skin involvement of PTCL may be primary or secondary. Diagnosis of histiocytosis may be difficult, requiring clinical-pathological correlation. We describe a laryngeal atypical histiocytic lesion (AHL) and a nasal PTCL, NOS with cutaneous involvement in the same patient presenting with peculiar histopathologic and immunophenotypic features. The laryngeal neoplasm showed morphological and immunophenotypic evidence of histiocytic differentiation and does not fit any other category of the WHO classification nor the revised classification of histiocytosis...
August 6, 2018: American Journal of Dermatopathology
W Glenn McCluggage, Koen Van de Vijver
So-called squamous morules are closely associated with endometrioid proliferative lesions, in the endometrium and the ovary. Morules have an unusual immunophenoptype, typically exhibiting nuclear staining with β-catenin, positivity with CDX2, CD10, and p16 and are negative with hormone receptors and p63. We report the previously undescribed occurrence of consistent SATB2 nuclear positivity within morules. Nuclear positivity was present in 38/43 (88%) cases of morules (24 focal; 14 diffuse) while all cases of nonmorular squamous metaplasia in endometrioid proliferative lesions (n=13) were SATB2 negative, except for occasional positive nuclei in 1 case...
August 6, 2018: International Journal of Gynecological Pathology
Jérôme Debus, Pierre Lemaire, Mustafa Alani, Jonathan Farhi, Johann Rose, Vincent Cussac, Sabine Defasque, Nathalie Denizon, Habib Ghnaya, Anne Besançon-Bergelin, Kamel Laribi, Fabienne Pineau-Vincent
We report here a case of lymphoplasmacytic lymphoma with IgA paraproteinemia and a case of concomitant Waldenström macroglobulinemia and monoclonal gammapathy of unknown significance. These rare cases show that the isotype of a monoclonal immunoglobulin does not allow to foresee every time the underlying pathology. Clinical data and medical imaging are essential. From a biological point of view, additional analysis such as immunophenotyping, cytogenetics and molecular biology are required in addition to the cytological features in order to make an accurate differential diagnosis between lymphoid and plasma cell malignancy...
August 1, 2018: Annales de Biologie Clinique
Roberto Cupaiolo, Soraya Cherifi, Christophe Lelubre, Danielle Govaerts, Quentin Delefortrie, Francis Corazza, Charles Chevalier
Large granular lymphocyte leukemia (LGL) are chronic lymphoproliferative disorders classified into three main groups: T-cell LGL leukemia (T-LGL), aggressive NK-cell leukemia and chronic lymphoproliferative disorder of NK cells (NK-LGL). Patients with LGL leukemia exhibit chronic (>3 months) and moderate (<1G/L) to substantial monoclonal expansion of large granular lymphocytes in the peripheral blood. Cytologically, large granular lymphocytes are medium to large cells which are further characterized by an eccentric nucleus and a slightly basophilic cytoplasm containing azurophilic granules...
August 1, 2018: Annales de Biologie Clinique
Devin R Broadwater, Joanna L Conant, David R Czuchlewski, Jordan M Hall, Shi Wei, Gene P Siegal, Deniz Peker
INTRODUCTION: Histiocytic sarcoma (HS) is a rare malignant neoplasm that can occur in patients with a history of treatment for hematologic or solid tumors. Because no optimal treatment has been defined and standardized, the treatment modalities used and outcomes reported have been highly variable. In the present study, 3 major institutions explored the clinicopathologic features of de novo and secondary HS. MATERIALS AND METHODS: After institutional review board approval, clinical, histopathologic, and immunophenotypic data were collected from patients with a diagnosis of HS and treated at the University of Alabama at Birmingham, University of New Mexico, or Brooke Army Medical Center from January 1, 2003 to December 31, 2016...
August 1, 2018: Clinical Lymphoma, Myeloma & Leukemia
G Alfano, F Fontana, E Colaci, E Franceschini, G Ligabue, A Messerotti, F Bettelli, A Grottola, W Gennari, L Potenza, G Guaraldi, C Mussini, M Luppi, G Cappelli
Monoclonal B-cell lymphocytosis (MBL) is a lymphoproliferative disorder characterized by clonal expansion of a B-cell population in peripheral blood of otherwise healthy subjects. MBL is divided into CLL (chronic lymphocytic leukemia)-like, atypical CLL-like and non-CLL MBL. The aim of this study was to evaluate immunophenotypic characteristics and clinical outcomes of MBL in kidney transplant (KT) recipients. We retrospectively evaluated 593 kidney transplant (KT) recipients in follow-up at our center. Among them, 157 patients underwent peripheral blood flow-cytometry for different clinical indications...
August 3, 2018: Clinical Transplantation
Shahrzad Nojehdehi, Sara Soudi, Ardeshir Hesampour, Shima Rasouli, Masoud Soleimani, Seyed Mahmoud Hashemi
Exosomes derived from adipose tissue-derived mesenchymal stem cells (AD-MSCs) have immunomodulatory effects of T-cell inflammatory response and reduction of clinical symptoms on streptozotocin-induced of the type-1 diabetes mellitus (T1DM). Beside control group and untreated T1DM mice, a group of T1DM mice was treated with intraperitoneal injections of characterized exosomes derived from autologous AD-MSCs. Body weight and blood glucose levels were measured during the procedure. Histopathology and immunohistochemistry were used for evaluation of pancreatic islets using hemotoxylin and eosin (H&E) staining and anti-insulin antibody...
August 3, 2018: Journal of Cellular Biochemistry
Matteo Sbattella, Andrea Zanichelli, Paolo Ghia, Valter Gattei, Chiara Suffritti, Thomas Teatini, Marco Cicardi, Roberto Castelli
Angioedema due to acquired deficiency of the inhibitor of the first component of complement (C1-INH) is a rare disease known as acquired angioedema (AAE). About 70% of patients with AEE display autoantibodies to C1-INH, the remaining patients have no antibodies to C1-INH. The clinical features of C1-INH deficiency include recurrent, self-limiting local swellings involving the skin, the gastrointestinal tract, and the upper respiratory tract. Swelling is due to accumulation of bradykinin released from high molecular weight kininogen...
August 2, 2018: Medical Oncology
Sylvia Pasternak, Michael D Carter, Thai Yen Ly, Steve Doucette, Noreen M Walsh
The literature records many examples of Merkel cell carcinoma (MCC) exhibiting aberrant immunohistochemical profiles. These can lead to diagnostic difficulty. The objectives of the current study were (1) to examine the immunohistochemical profile of different subsets of MCC to determine whether predictable subset-specific patterns exist and (2) to establish whether shared immunophenotypic patterns might reveal links between individual subsets, as demonstrated previously at a genetic level. In 52 cases of MCC, stratified by viral status and morphology, we studied 5 markers commonly used in the diagnostic evaluation of these tumors (CK20, CK7, chromogranin, neurofilament and TTF-1)...
July 29, 2018: Human Pathology
Ed Carlos Rey Moura, Plinio da Cunha Leal, Izabel Cristina Portela Bogéa Serra, Bruno de Paulo Ribeiro, Johnny Ramos do Nascimento, Flavia Raquel Fernandes do Nascimento, Rioko Kimiko Sakata
OBJECTIVE: The objective of this study was to analyze whether duloxetine influences tumor growth in Ehrlich carcinoma. The mice were administered 5 or 30 mg/kg of duloxetine or saline solution. All animals were inoculated with tumor cells. The tumor progression was evaluated by body weight, abdominal circumference, ascites volume and tumor cell count. The effect of duloxetine on immune response was evaluated by lymphoid cells, nitric oxide (NO) production, arginase and superoxide dismutase (SOD) activity and the spleen immunophenotyping...
July 31, 2018: BMC Research Notes
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