3.Incorporation of Whole Spine Screening in Magnetic Resonance Imaging Protocols for Low Back Pain: A Valuable Addition.
Akhilesh RAO ; Atul MISHRA ; Yayati PIMPALWAR ; Ravinder SAHDEV ; Neha YADU
Asian Spine Journal 2017;11(5):700-705
STUDY DESIGN: A retrospective review of lumbar magnetic resonance imaging (MRI) studies conducted at the Department of Radiodiagnosis & Imaging of a Tertiary Care Armed Forces Hospital between May 2014 and May 2016. PURPOSE: To assess the advantages of incorporating sagittal screening of the whole spine in protocols for conventional lumbar spine MRI for patients presenting with low back pain. OVERVIEW OF LITERATURE: Advances in MRI have resulted in faster examinations, particularly for patients with low back pain. The additional detection of incidental abnormalities on MRI helps to improve patient outcomes by providing a swifter definitive diagnosis. Because low back pain is extremely common, any change to the diagnostic and treatment approach has a significant impact on health care resources. METHODS: We documented all additional incidental findings detected on sagittal screenings of the spine that were of clinical significance and would otherwise have been undiagnosed. RESULTS: A total of 1,837 patients who met our inclusion criteria underwent MRI of the lumbar spine. The mean age of the study population was 45.7 years; 66.8% were men and 33.2% women. Approximately 26.7% of the patients were diagnosed with incidental findings. These included determining the level of indeterminate vertebrae, incidental findings of space-occupying lesions of the cervicothoracic spine, myelomalacic changes, and compression fractures at cervicothoracic levels. CONCLUSIONS: We propose that T2-weighted sagittal screening of the whole spine be included as a routine sequence when imaging the lumbosacral spine for suspected degenerative pathology of the intervertebral discs.
Arm
;
Delivery of Health Care
;
Diagnosis
;
Female
;
Fractures, Compression
;
Humans
;
Incidental Findings
;
Intervertebral Disc
;
Low Back Pain*
;
Magnetic Resonance Imaging*
;
Male
;
Mass Screening*
;
Pathology
;
Retrospective Studies
;
Spine*
;
Tertiary Healthcare
4.Epigenetics: A key paradigm in reproductive health.
Neha BUNKAR ; Neelam PATHAK ; Nirmal Kumar LOHIYA ; Pradyumna Kumar MISHRA
Clinical and Experimental Reproductive Medicine 2016;43(2):59-81
It is well established that there is a heritable element of susceptibility to chronic human ailments, yet there is compelling evidence that some components of such heritability are transmitted through non-genetic factors. Due to the complexity of reproductive processes, identifying the inheritance patterns of these factors is not easy. But little doubt exists that besides the genomic backbone, a range of epigenetic cues affect our genetic programme. The inter-generational transmission of epigenetic marks is believed to operate via four principal means that dramatically differ in their information content: DNA methylation, histone modifications, microRNAs and nucleosome positioning. These epigenetic signatures influence the cellular machinery through positive and negative feedback mechanisms either alone or interactively. Understanding how these mechanisms work to activate or deactivate parts of our genetic programme not only on a day-to-day basis but also over generations is an important area of reproductive health research.
Cues
;
DNA Methylation
;
Epigenomics*
;
Family Characteristics
;
Histone Code
;
Humans
;
Inheritance Patterns
;
MicroRNAs
;
Nucleosomes
;
Reproductive Health*
5.Level of Organochlorine Pesticide in Prediabetic and Newly Diagnosed Diabetes Mellitus Patients with Varying Degree of Glucose Intolerance and Insulin Resistance among North Indian Population
Shipra TYAGI ; Brijesh Kumar MISHRA ; Tusha SHARMA ; Neha TAWAR ; Abdul Jamil URFI ; Basu Dev BANERJEE ; Sri Venkata MADHU
Diabetes & Metabolism Journal 2021;45(4):558-568
Background:
Organochlorine pesticides (OCPs) exposure may induce an endocrine disruption which may lead to the risk of developing diabetes through alteration and disturbance of glucose metabolism, insulin resistance, and destruction of β-cells. The present study determines the recent trend of OCPs residue in blood samples and their association with the known risk factors responsible for developing the risk of diabetes among the North Indian population.
Methods:
Blood sample of 300 patients (100 each of normal glucose tolerance [NGT], prediabetes and newly detected diabetes mellitus [DM]) between the age group of 30 to 70 years were collected. OCPs residue in whole blood samples was analyzed by using gas chromatography equipped with a 63Ni selective electron capture detector.
Results:
Significantly higher levels of β-hexachlorocyclohexane (HCH), dieldrin, and p,p’-dichloro-diphenyl-dichloroethylene (DDE) were found in the prediabetes and newly detected DM groups as compared to NGT group. Insulin resistance showed to be significantly positive correlation with β-HCH and dieldrin. Also, fasting and postprandial glucose levels were significantly positively correlated with levels of β-HCH, dieldrin, and p,p’-DDE. Further, when OCPs level was adjusted for age and body mass index (BMI), it was found that β-HCH, dieldrin, and p,p’-DDE levels in blood increases the risk of diabetes by 2.70, 2.83, and 2.55 times respectively. Moreover, when we adjust OCPs level based on BMI categories (BMI <23, ≥23, and ≤25, and >25 kg/m2); β-HCH and p,p’-DDE showed a significant risk of developing newly detected DM with BMI >25 and ≥23 and ≤25 kg/m2.
Conclusion
The OCPs level present in the environment may be responsible for biological, metabolic, and endocrine disruptions within the human body which may increase the risk of developing newly detected DM. Hence, OCPs exposure can play a crucial role in the etiology of diabetes.
6.Level of Organochlorine Pesticide in Prediabetic and Newly Diagnosed Diabetes Mellitus Patients with Varying Degree of Glucose Intolerance and Insulin Resistance among North Indian Population
Shipra TYAGI ; Brijesh Kumar MISHRA ; Tusha SHARMA ; Neha TAWAR ; Abdul Jamil URFI ; Basu Dev BANERJEE ; Sri Venkata MADHU
Diabetes & Metabolism Journal 2021;45(4):558-568
Background:
Organochlorine pesticides (OCPs) exposure may induce an endocrine disruption which may lead to the risk of developing diabetes through alteration and disturbance of glucose metabolism, insulin resistance, and destruction of β-cells. The present study determines the recent trend of OCPs residue in blood samples and their association with the known risk factors responsible for developing the risk of diabetes among the North Indian population.
Methods:
Blood sample of 300 patients (100 each of normal glucose tolerance [NGT], prediabetes and newly detected diabetes mellitus [DM]) between the age group of 30 to 70 years were collected. OCPs residue in whole blood samples was analyzed by using gas chromatography equipped with a 63Ni selective electron capture detector.
Results:
Significantly higher levels of β-hexachlorocyclohexane (HCH), dieldrin, and p,p’-dichloro-diphenyl-dichloroethylene (DDE) were found in the prediabetes and newly detected DM groups as compared to NGT group. Insulin resistance showed to be significantly positive correlation with β-HCH and dieldrin. Also, fasting and postprandial glucose levels were significantly positively correlated with levels of β-HCH, dieldrin, and p,p’-DDE. Further, when OCPs level was adjusted for age and body mass index (BMI), it was found that β-HCH, dieldrin, and p,p’-DDE levels in blood increases the risk of diabetes by 2.70, 2.83, and 2.55 times respectively. Moreover, when we adjust OCPs level based on BMI categories (BMI <23, ≥23, and ≤25, and >25 kg/m2); β-HCH and p,p’-DDE showed a significant risk of developing newly detected DM with BMI >25 and ≥23 and ≤25 kg/m2.
Conclusion
The OCPs level present in the environment may be responsible for biological, metabolic, and endocrine disruptions within the human body which may increase the risk of developing newly detected DM. Hence, OCPs exposure can play a crucial role in the etiology of diabetes.
7.In-silico and structure-based assessment to evaluate pathogenicity of missense mutations associated with non-small cell lung cancer identified in the Eph-ephrin class of proteins
Shubhashish CHAKRABORTY ; Reshita BARUAH ; Neha MISHRA ; Ashok K VARMA
Genomics & Informatics 2023;21(3):e30-
Ephs belong to the largest family of receptor tyrosine kinase and are highly conserved both sequentially and structurally. The structural organization of Eph is similar to other receptor tyrosine kinases; constituting the extracellular ligand binding domain, a fibronectin domain followed by intracellular juxtamembrane kinase, and SAM domain. Eph binds to respective ephrin ligand, through the ligand binding domain and forms a tetrameric complex to activate the kinase domain. Eph-ephrin regulates many downstream pathways that lead to physiological events such as cell migration, proliferation, and growth. Therefore, considering the importance of Eph-ephrin class of protein in tumorigenesis, 7,620 clinically reported missense mutations belonging to the class of variables of unknown significance were retrieved from cBioPortal and evaluated for pathogenicity. Thirty-two mutations predicted to be pathogenic using SIFT, Polyphen-2, PROVEAN, SNPs&GO, PMut, iSTABLE, and PremPS in-silico tools were found located either in critical functional regions or encompassing interactions at the binding interface of Eph-ephrin. However, seven were reported in nonsmall cell lung cancer (NSCLC). Considering the relevance of receptor tyrosine kinases and Eph in NSCLC, these seven mutations were assessed for change in the folding pattern using molecular dynamic simulation. Structural alterations, stability, flexibility, compactness, and solvent-exposed area was observed in EphA3 Trp790Cys, EphA7 Leu749Phe, EphB1 Gly685Cys, EphB4 Val748Ala, and Ephrin A2 Trp112Cys. Hence, it can be concluded that the evaluated mutations have potential to alter the folding pattern and thus can be further validated by in-vitro, structural and in-vivo studies for clinical management.