Prevalence of thalassemia and hemoglobinopathy in antenatal mothers with relation to complete hemogram and high performance liquid chromatography-a hospital based study of Eastern India

Background: Iron deficiency anemia (IDA) and Beta thalassemia (BT) are two most common causes of microcytic hypochromic anemia in our country affecting the reproductive age group. It is important to discriminate between these two entities to prevent treatment with iron of individuals with thalassemia trait as well as prevent homozygous transmission of B thalassemia trait (BTT). Aim of the study was to investigate causes of microcytic anemia in antenatal mothers and to find out the role of Cell Counter and High Performance Liquid Chromatography (HPLC) so as to screen BTT and other hemoglobinopathies.Methods: This study was done over a period of six months (May 2017 to October 2017) in the Department of Pathology in R. G. Kar Medical College. We analyzed the blood samples of all antenatal mothers attending Department of Pathology for blood tests and a complete hemogram and hemoglobin A2 (Hb A2) quantitation was done.Results: Total cases evaluated were 2200 of which 442 patients were found to have microcytic hypochromic anemia (MCV<80%, MCH<27). Rest that is 1758 was normal. Of 442 cases of microcytic hypochromic anemia, 205 were found to have IDA, 115 BTT, 112 E trait, 1 case each of Hemoglobin E disease, E-Beta thalassemia and hereditary persistence of fetal hemoglobin (HPFH). Hemoglobinopathies like S trait and Hemoglobin J (Hb J) was found in 4 and 3 cases respectively.Conclusions: In India, Microcytic hypochromic anemia is common and may be due to IDA, BTT or other hemoglobinopathies Cell counter-based parameters and formulas, along with HPLC can be an effective method of thalassemia screening in a society.

Concordance Between Core Needle Biopsy and Surgical Specimens in Determining Molecular Biological Subtypes of Breast Cancer by Immunohistochemistry

Background: Breast carcinoma is the most common malignancy among women around the world. Core needle biopsy provides samples that are adequate in size thus allowing a histological diagnosis of breast carcinomas. CNB specimens can also be used for the immunohistochemical (IHC) assays of hormone receptors. Aims: To evaluate the concordance of ER, PR, HER2 Neu and Ki-67 in core needle biopsy and surgical specimens obtained by Modified radical mastectomy (MRM). Methods: A cross-sectional observational study was conducted in the Department of Pathology in association with the Department of Surgery at Murshidabad Medical College and Hospital for a duration of one and a half years. Patients undergoing Core needle biopsy of the breast who have been diagnosed with breast carcinoma on the basis of histopathology report and subsequently planned for MRM who have given consent for the study were included in this study. The samples were classified according to the immunohistochemical staining into four molecular subtypes: Luminal A, Luminal B, HER 2 Neu enriched, and triple-negative subtype depending on the expression of ER, PR, HER 2 Neu, and Ki-67. Result: The most common molecular subtype of breast carcinoma in both CNB and MRM specimens was the Triple-negative subtype. Conclusion: CNB has been found to be a reliable diagnostic tool that can help in determining Histopathological biomarkers for ER, PR positive, and HER2 Neu positive or negative tumors and it has also been found that retesting these markers again on the surgical specimens may not be necessary. Keywords: Core needle biopsy, Breast carcinoma, Molecular subtyping, Immunohistochemistr

Measurement of the top quark forward-backward production asymmetry and the anomalous chromoelectric and chromomagnetic moments in pp collisions at √s = 13 TeV

Abstract The parton-level top quark (t) forward-backward asymmetry and the anomalous chromoelectric (d̂ t) and chromomagnetic (μ̂ t) moments have been measured using LHC pp collisions at a center-of-mass energy of 13 TeV, collected in the CMS detector in a data sample corresponding to an integrated luminosity of 35.9 fb−1. The linearized variable AFB(1) is used to approximate the asymmetry. Candidate t t ¯ events decaying to a muon or electron and jets in final states with low and high Lorentz boosts are selected and reconstructed using a fit of the kinematic distributions of the decay products to those expected for t t ¯ final states. The values found for the parameters are AFB(1)=0.048−0.087+0.095(stat)−0.029+0.020(syst),μ̂t=−0.024−0.009+0.013(stat)−0.011+0.016(syst), and a limit is placed on the magnitude of | d̂ t| &lt; 0.03 at 95% confidence level. [Figure not available: see fulltext.

MUSiC : a model-unspecific search for new physics in proton-proton collisions at root s=13TeV

Results of the Model Unspecific Search in CMS (MUSiC), using proton-proton collision data recorded at the LHC at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb(-1), are presented. The MUSiC analysis searches for anomalies that could be signatures of physics beyond the standard model. The analysis is based on the comparison of observed data with the standard model prediction, as determined from simulation, in several hundred final states and multiple kinematic distributions. Events containing at least one electron or muon are classified based on their final state topology, and an automated search algorithm surveys the observed data for deviations from the prediction. The sensitivity of the search is validated using multiple methods. No significant deviations from the predictions have been observed. For a wide range of final state topologies, agreement is found between the data and the standard model simulation. This analysis complements dedicated search analyses by significantly expanding the range of final states covered using a model independent approach with the largest data set to date to probe phase space regions beyond the reach of previous general searches.Peer reviewe

Measurement of prompt open-charm production cross sections in proton-proton collisions at root s=13 TeV

The production cross sections for prompt open-charm mesons in proton-proton collisions at a center-of-mass energy of 13TeV are reported. The measurement is performed using a data sample collected by the CMS experiment corresponding to an integrated luminosity of 29 nb(-1). The differential production cross sections of the D*(+/-), D-+/-, and D-0 ((D) over bar (0)) mesons are presented in ranges of transverse momentum and pseudorapidity 4 < p(T) < 100 GeV and vertical bar eta vertical bar < 2.1, respectively. The results are compared to several theoretical calculations and to previous measurements.Peer reviewe

Measurement of t(t)over-bar normalised multi-differential cross sections in pp collisions at root s=13 TeV, and simultaneous determination of the strong coupling strength, top quark pole mass, and parton distribution functions

Peer reviewe

An embedding technique to determine ττ backgrounds in proton-proton collision data

An embedding technique is presented to estimate standard model tau tau backgrounds from data with minimal simulation input. In the data, the muons are removed from reconstructed mu mu events and replaced with simulated tau leptons with the same kinematic properties. In this way, a set of hybrid events is obtained that does not rely on simulation except for the decay of the tau leptons. The challenges in describing the underlying event or the production of associated jets in the simulation are avoided. The technique described in this paper was developed for CMS. Its validation and the inherent uncertainties are also discussed. The demonstration of the performance of the technique is based on a sample of proton-proton collisions collected by CMS in 2017 at root s = 13 TeV corresponding to an integrated luminosity of 41.5 fb(-1).Peer reviewe

Measurement of the Splitting Function in &ITpp &ITand Pb-Pb Collisions at root&ITsNN&IT=5.02 TeV

Data from heavy ion collisions suggest that the evolution of a parton shower is modified by interactions with the color charges in the dense partonic medium created in these collisions, but it is not known where in the shower evolution the modifications occur. The momentum ratio of the two leading partons, resolved as subjets, provides information about the parton shower evolution. This substructure observable, known as the splitting function, reflects the process of a parton splitting into two other partons and has been measured for jets with transverse momentum between 140 and 500 GeV, in pp and PbPb collisions at a center-of-mass energy of 5.02 TeV per nucleon pair. In central PbPb collisions, the splitting function indicates a more unbalanced momentum ratio, compared to peripheral PbPb and pp collisions.. The measurements are compared to various predictions from event generators and analytical calculations.Peer reviewe

Measurement of B-c(2S)(+) and B-c*(2S)(+) cross section ratios in proton-proton collisions at root s=13 TeV

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Measurement of the W gamma Production Cross Section in Proton-Proton Collisions at root s=13 TeV and Constraints on Effective Field Theory Coefficients

A fiducial cross section for W gamma production in proton-proton collisions is measured at a center-of-mass energy of 13 TeV in 137 fb(-1) of data collected using the CMS detector at the LHC. The W -> e nu and mu nu decay modes are used in a maximum-likelihood fit to the lepton-photon invariant mass distribution to extract the combined cross section. The measured cross section is compared with theoretical expectations at next-to-leading order in quantum chromodynamics. In addition, 95% confidence level intervals are reported for anomalous triple-gauge couplings within the framework of effective field theory.Peer reviewe