A retrospective study on immunohistochemical evaluation of CD34 in the pathogenesis of oral lichen planus.

Context: Oral lichen planus (OLP) is a chronic inflammatory disorder with an autoimmune inflammatory pathogenesis. Although the etiology of OLP is not known, it is considered to be a T-cell-mediated inflammatory disorder. Angiogenesis is the neoformation of anomalous blood vessels in preexisting vascular structures.

Assessment of dengue virus inactivation in random donor platelets using amotosalen and ultraviolet A illumination.

Objectives: The study objective was evaluation of amotosalen and ultraviolet A (UVA) illumination-based inactivation of dengue virus (DENV) in blood platelets.

Materials And Methods: Whole blood was collected from healthy donors and platelet concentrates were prepared at a tertiary care hospital in Gurugram, India. Platelet units collected from five blood group matched individuals were pooled and spiked with DENV.

Maxillary ameloblastic carcinoma: A diagnostic conundrum.

Ameloblastic carcinoma (AC) is a rare malignant epithelial proliferation that is associated with an ameloblastoma or histologically resembles an ameloblastoma. It is considered to be an aggressive neoplasm that is locally invasive and spread to regional lymph nodes or distant sites. It requires aggressive surgical treatment, and regular follow-up, therefore, differs from ameloblastoma.

Differential Wnt-β- catenin pathway activation in HPV positive and negative oral epithelium is transmitted during head and neck tumorigenesis: clinical implications.

The aim of this study is to understand the association of HPV infection and wnt-β-catenin self-renewal pathway in development of head and neck squamous cell carcinoma (HNSCC). For this reason, the molecular profiles (methylation/deletion/expression) of antagonists (SFRP1/2 and DKK1), agonists (FZD7 and LRP6) and effector protein β-catenin of the pathway were analyzed in HPV positive/negative oral epithelium at first, followed by its changes during development of the tumor along with correlations with different clinico-pathological parameters. HPV infection alone or in combination with tobacco habit could activate p- β-catenin expression in basal/parabasal layers of oral epithelium through high expression of FZD7 and significant down regulation of SFRP1/2 through promoter hypermethylation due to over expression of DNMT1 with ubiquitous down regulation of DKK1 and up-regulation of LRP6.

Clinico-pathological significance of Drp1 dysregulation and its correlation to apoptosis in oral cancer patients.

Dysregulation in mitochondrial dynamics has been associated with several diseases including cancer. Present study assessed the alteration in mitochondrial fission protein (Drp1) in oral epithelial cells collected from clinically confirmed pre-cancer and cancer patients and further correlates it with the cellular apoptosis signaling. Results indicate the ROS accumulation in OSCC patients is accompanied by several changes including increase in mitochondrial mass, expression of mitochondrial fission protein (Drp1) and alteration in apoptotic signaling.

Frequent plateletpheresis donations & its effect on haematological parameters: An observational study.

Background & Objectives: The well-being of donors undergoing frequent plateletpheresis has been a matter of concern. The aim of this study was to analyze the effect of frequent plateletpheresis on the haematological parameters (HP) of repeat donors.

Methods: The study was conducted during February 2016 to March 2017 on all the repeat plateletpheresis donors undergoing the 2 plateletpheresis within a month of the first in a tertiary care centre.

Characterization of biological variation of peripheral blood immune cytome in an Indian cohort.

Immune parameters show characteristic normal baseline levels and variance in the population. We characterised the degree of inter-individual and within-individual variation over one-year time period in 33 immune cell subsets by flow cytometry in peripheral blood mononuclear cells from 43 healthy young adult volunteers. Our analysis revealed that immune subsets that showed low variability between individuals also showed low short-term fluctuations within-individuals, as well as concordance in siblings.

Expression of P53 Protein and Ki-67 Antigen in Oral Leukoplakia with Different Histopathological Grades of Epithelial Dysplasia.

Aims And Objective: The aim of this study is to investigate the expression of p53 protein and Ki-67 antigen in normal oral mucosa and oral leukoplakia with different grades of dysplasia using immunohistochemistry and to clarify the correlation of the expression of these cell cycle regulatory proteins.

Materials And Methods: A total of 20 archival tissue blocks obtained from our department which were diagnosed as mild ( = 5), moderate ( = 5), and severe dysplasia ( = 5) with normal mucosa ( = 5) as a control. Positivity of Ki-67 and p53 was analyzed using Statistical Package for the Social Sciences (IBM Corp.

Chemometric analysis of integrated FTIR and Raman spectra obtained by non-invasive exfoliative cytology for the screening of oral cancer.

FTIR spectroscopy and Raman spectroscopy of biological analytes are increasingly explored as screening tools for early detection of cancer. In the present study, an integrated analysis of the FTIR and Raman spectra obtained from exfoliated cells is adopted to improve discrimination of normal, pre-cancerous and cancerous conditions. Multiple spectra were obtained from 13 normal, 13 pre-cancer and 10 cancer patients in both modes.

Cell-intrinsic regulation of peripheral memory-phenotype T cell frequencies.

Memory T and B lymphocyte numbers are thought to be regulated by recent and cumulative microbial exposures. We report here that memory-phenotype lymphocyte frequencies in B, CD4 and CD8 T-cells in 3-monthly serial bleeds from healthy young adult humans were relatively stable over a 1-year period, while Plasmablast frequencies were not, suggesting that recent environmental exposures affected steady state levels of recently activated but not of memory lymphocyte subsets. Frequencies of memory B and CD4 T cells were not correlated, suggesting that variation in them was unlikely to be determined by cumulative antigenic exposures.

Differential transmission of the molecular signature of RBSP3, LIMD1 and CDC25A in basal/ parabasal versus spinous of normal epithelium during head and neck tumorigenesis: A mechanistic study.

Head and neck squamous cell carcinoma (HNSCC) is a global disease and mortality burden, necessitating the elucidation of its molecular progression for effective disease management. The study aims to understand the molecular profile of three candidate cell cycle regulatory genes, RBSP3, LIMD1 and CDC25A in the basal/ parabasal versus spinous layer of normal oral epithelium and during head and neck tumorigenesis. Immunohistochemical expression and promoter methylation was used to determine the molecular signature in normal oral epithelium.

Liaison between heme metabolism and bioenergetics pathways-a multimodal elucidation for early diagnosis of oral cancer.

Metabolic alterations of oral epithelial cells under oxidative stress are important signatures for early diagnosis of oral cancer. Amongst different metabolic alterations, non-invasive photo-diagnostic methods have been extensively used for determining cellular heme metabolism and accumulation of protoporphyrin IX (PpIX) under administration of suitable photosensitizer. In this study, we report these metabolic alterations by direct analysis of oral exfoliated cells obtained from individuals with prolonged smoking habit without the exogenous administration of any photosensitizer.

Discrepancy in Blood Grouping: Subgroups of B-Challenges and Dilemma.

Though not very frequent, blood group discrepancies are of common occurrence which must be promptly resolved for safe transfusion practices. Blood group discrepancy is defined as the non-corroboration between cell grouping and serum grouping. Variable erythrocyte antigenic expressions (qualitative and/or quantitative difference) owing to allelic heterogeneity, give rise to subgroups.

Autologous Blood Transfusion as a Life Saving Measure for a Trauma Patient with Fracture Femur and Drug Induced Hemolytic Anemia: A Case Report.

A positive direct antiglobulin test has been reported in 1:1000 to 1:14,000 blood donors and 1-15 % of hospital patients. Drugs may cause a positive direct antiglobulin test result and/or immune-mediated haemolysis with an incidence of approximately 1 in a 1 million population. Our aim is to highlight the importance of following strict transfusion protocols and management insight in a direct antiglobulin test positive patient showing incompatibility with multiple units possibly due to drug induced immune haemolytic anaemia (DIIHA).

Decreased Spontaneous Baroreflex Sensitivity as an Early Marker for Progression of Haemorrhage.

Introduction: Blood donation provides an ideal setup for assessment of cardiovascular responses to mild hypovolemia for understanding the underlying mechanisms.

Aim: To evaluate cardiovascular responses in time and magnitude by estimating the spontaneous baroreflex sensitivity (BRS) during and after donation of 450 ml of blood.

Methods: Continuous beat-to-beat blood pressure and lead II ECG was recorded before, during and after blood donation in 54 healthy volunteers (age 34.

Computer-assisted morphometric image analysis of cells of normal oral epithelium and oral squamous cell carcinoma.

Context: Oral squamous cell carcinoma (OSCC) is a malignant neoplasm of epithelial tissue origin. OSCC is traditionally graded into well, moderate and poorly differentiated. The assessment of cellular and nuclear features is very important in the histological grading of OSCC.

Low-density lipoprotein apheresis in a pediatric patient of familial hypercholesterolemia: Primi experientia from a tertiary care center in North India.

Familial hypercholesterolemia (FH) is an autosomal dominant disorder due to mutation of apolipoprotein-B receptor gene causing severe dyslipidemia. Lifestyle modification and medical treatment attenuate the disease progression, but as these fail to control the blood cholesterol levels, low-density lipoprotein (LDL) apheresis comes forth as a treatment option. To the best of our knowledge, the following is the very first case of pediatric FH being treated by LDL-apheresis to be reported from India.

Pre-cancer risk assessment in habitual smokers from DIC images of oral exfoliative cells using active contour and SVM analysis.

Habitual smokers are known to be at higher risk for developing oral cancer, which is increasing at an alarming rate globally. Conventionally, oral cancer is associated with high mortality rates, although recent reports show the improved survival outcomes by early diagnosis of disease. An effective prediction system which will enable to identify the probability of cancer development amongst the habitual smokers, is thus expected to benefit sizable number of populations.

Adverse Events During Apheresis Procedures: Audit at a Tertiary Hospital.

Apheretic platelets are better quality blood components which reduce donor exposure and chances of TTIs to transfusion recipients when compared to the whole blood derived components. Though safe, these apheretic donations are associated with donor adverse events. We evaluated the incidence of such adverse events associated with the modern apheresis procedures that would provide an insight as well as help formulating preventive steps to avoid frequent occurrences of such events.

Evaluation of Mirasol pathogen reduction system by artificially contaminating platelet concentrates with Staphylococcus epidermidis: A pilot study from India.

Background And Objectives: This study was conducted to assess the efficacy of Mirasol pathogen reduction system for platelets aimed at preventing bacterial regrowth by spiking buffy coat pooled platelets (BCPP) with clinically relevant load of Staphylococous epidermidis.

Materials And Methods: BCPP units were prepared using Teruflex BP-kit with Imugard III-S-PL (Terumo BCT, Tokyo, Japan). Two BCPP units were pooled, of which 40 ml of negative control (NC) was removed.

Modulation of cardiac autonomic tone in non-hypotensive hypovolemia during blood donation.

Non-hypotensive hypovolemia, observed during mild haemorrhage or blood donation leads to reflex readjustment of the cardiac autonomic tone. In the present study, the cardiac autonomic tone was quantified using heart rate and blood pressure variability during and after non-hypotensive hypovolemia of blood donation. 86 voluntary healthy male blood donors were recruited for the study (age 35 ± 9 years; weight 78 ± 12 kg; height 174 ± 6 cms).

WITHDRAWN: Differential molecular signature alterations of RBSP3, LIMD1 and CDC25A in normal oral epithelium during oral tumorigenesis.

The Accepted Manuscript version of this article (published on 1 June 2016) was withdrawn on 24 November 2017 at the request of the authors.