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Article ; Online: Maxillary sinus mucocele in a 20-year-old male

Pavithra R / Sunita Gupta / Rizwan Hamid / Sujoy Ghosh

Iberoamerican Journal of Medicine, Vol 5, Iss 2, Pp 78-

a case report of a rare occurrence

2023 Volume 83

Abstract: Mucocele of Maxillary sinus is a rare entity comprising 2-10% of all mucoceles and develops due to obstruction of drainage ostium. Here, we present a case of maxillary sinus mucocele in a 20-year-old male who presented with diffuse swelling on the left ... ...

Abstract	Mucocele of Maxillary sinus is a rare entity comprising 2-10% of all mucoceles and develops due to obstruction of drainage ostium. Here, we present a case of maxillary sinus mucocele in a 20-year-old male who presented with diffuse swelling on the left side of his face. Provisional diagnosis of mucocele was made on a computed tomography scan, which was later confirmed on histopathology. The lesion was managed surgically with uneventful healing at 2 weeks and 3 months follow-up. Mucoceles are often misdiagnosed as cysts or tumours of odontogenic origin on the conventional radiograph. Delay in diagnosis can result in complications due to the expansion of mucocele towards adjacent structures such as the nose and orbit. Therefore, it becomes crucial to diagnose it appropriately with the help of higher imaging modalities so that it can be managed well in time.
Keywords	maxillary sinus ; mucocele ; caldwell-luc ; sinusectomy ; Medicine (General) ; R5-920
Language	English
Publishing date	2023-03-01T00:00:00Z
Publisher	Emergency Department of Hospital San Pedro (Logroño, Spain)
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Blink-related EEG oscillations are neurophysiological indicators of subconcussive head impacts in female soccer players: a preliminary study.

Sattari, Sahar / Kenny, Rebecca / Liu, Careesa Chang / Hajra, Sujoy Ghosh / Dumont, Guy A / Virji-Babul, Naznin

Frontiers in human neuroscience

2023 Volume 17, Page(s) 1208498

Abstract: Introduction: Repetitive subconcussive head impacts can lead to subtle neural changes and functional consequences on brain health. However, the objective assessment of these changes remains limited. Resting state blink-related oscillations (BROs), ... ...

Abstract	Introduction: Repetitive subconcussive head impacts can lead to subtle neural changes and functional consequences on brain health. However, the objective assessment of these changes remains limited. Resting state blink-related oscillations (BROs), recently discovered neurological responses following spontaneous blinking, are explored in this study to evaluate changes in BRO responses in subconcussive head impacts. Methods: We collected 5-min resting-state electroencephalography (EEG) data from two cohorts of collegiate athletes who were engaged in contact sports (SC) or non-contact sports (HC). Video recordings of all on-field activities were conducted to determine the number of head impacts during games and practices in the SC group. Results: In both groups, we were able to detect a BRO response. Following one season of games and practice, we found a strong association between the number of head impacts sustained by the SC group and increases in delta and beta spectral power post-blink. There was also a significant difference between the two groups in the morphology of BRO responses, including decreased peak-to-peak amplitude of response over left parietal channels and differences in spectral power in delta and alpha frequency range post-blink. Discussion: Our preliminary results suggest that the BRO response may be a useful biomarker for detecting subtle neural changes resulting from repetitive head impacts. The clinical utility of this biomarker will need to be validated through further research with larger sample sizes, involving both male and female participants, using a longitudinal design.
Language	English
Publishing date	2023-07-19
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2425477-0
ISSN	1662-5161
ISSN	1662-5161
DOI	10.3389/fnhum.2023.1208498
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Imaging findings in a case of synovial chondromatosis of temporomandibular joint

Khushboo Singh / Sujoy Ghosh / Mahesh Verma / Sunita Gupta

Journal of Indian Academy of Oral Medicine and Radiology, Vol 30, Iss 1, Pp 73-

2018 Volume 77

Abstract: Synovial chondromatosis (SC) is a benign pathology that usually affects the joints of axial skeleton and being rare in temporomandibular joint region. Clinically, the presentation can be in the form of swelling, pain, clicking sounds, and mouth opening ... ...

Abstract	Synovial chondromatosis (SC) is a benign pathology that usually affects the joints of axial skeleton and being rare in temporomandibular joint region. Clinically, the presentation can be in the form of swelling, pain, clicking sounds, and mouth opening limitation. Imaging is a vital component to distinguish the conditions similar to SC. A case of SC diagnosed with the help of imaging has been discussed in the present paper along with a brief review of differential diagnosis.
Keywords	Imaging findings ; synovial chondromatosis ; temporomandibular joint ; Dentistry ; RK1-715 ; Medical physics. Medical radiology. Nuclear medicine ; R895-920
Language	English
Publishing date	2018-01-01T00:00:00Z
Publisher	Wolters Kluwer Medknow Publications
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Brain vital signs as a quantitative measure of cognition: Methodological implementation in a care home environment.

Ighalo, Joshua / Kirby, Eric D / Song, Xiaowei / Fickling, Shaun D / Pawlowski, Gabriela / Hajra, Sujoy Ghosh / Liu, Careesa C / Menon, Carlo / Shah, Sudhin A / Knoefel, Frank / D'Arcy, Ryan C N

Heliyon

2024 Volume 10, Issue 7, Page(s) e28982

Abstract: Introduction: Managing cognitive function in care homes is a significant challenge. Individuals in care have a variety of scores across standard clinical assessments, such as the Mini-Mental Status Exam (MMSE), and many of them have scores that fall ... ...

Abstract	Introduction: Managing cognitive function in care homes is a significant challenge. Individuals in care have a variety of scores across standard clinical assessments, such as the Mini-Mental Status Exam (MMSE), and many of them have scores that fall within the range associated with dementia. A recent methodological advance, brain vital sign monitoring through auditory event-related potentials, provides an objective and sensitive physiological measurement to track abnormalities, differences, or changes in cognitive function. Taking advantage of point-of-care accessibility, the current study evaluated the methodological feasibility, the assessment of whether a particular research method can be successfully implemented, of quantitatively measuring cognition of care home residents using brain vital signs. Secondarily, the current study examined the relationship between brain vital signs, specifically the cognitive processing associated N400 component, and MMSE scores in care home residents. Materials and methods: Brain vital signs used the established N100 (auditory sensation), P300 (basic attention), and N400 (cognitive processing) event-related potential (ERP) components. A total of 52 residents were enrolled, with all participants evaluated using the MMSE. Participants were assigned into homogeneous groups based on their MMSE scores, and were categorized into low (n = 14), medium (n = 17), and high (n = 13) MMSE groups. Both brain vital sign measures and underlying ERP waveforms were examined. Statistical analyses used partial least squares correlation (PLS) analyses in which both MMSE and age were included as factors, as well as jackknife approaches, to test for significant brain vital sign changes. Results: The current study successfully measured and analyzed standardized, quantifiable brain vital signs in a care home setting. ERP waveform data showed specific N400 changes between MMSE groups as a function of MMSE score. PLS analyses confirmed significant MMSE-related and age-related differences in the N400 amplitude ( Discussion and conclusion: It was possible to acquire brain vital signs measures in care home residents. Additionally, the current study evaluated brain vital signs relative to MMSE in this group. The comparison revealed significant decreasing in N400 response amplitude (cognitive processing) as a function of both MMSE score and age, as well as a slowing of N400 latency. The findings indicate that objective neurophysiological measures of impairment are detectable in care home residents across the span of MMSE scores. Direct comparison to MMSE- and age-related variables represents a critical initial step ahead of future studies that will investigate relative improvements in sensitivity, validity, reliability and related advantages of brain vital sign monitoring.
Language	English
Publishing date	2024-03-29
Publishing country	England
Document type	Journal Article
ZDB-ID	2835763-2
ISSN	2405-8440
ISSN	2405-8440
DOI	10.1016/j.heliyon.2024.e28982
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Article ; Online: Deficiency in the omega-3 lysolipid transporter Mfsd2a leads to aberrant oligodendrocyte lineage development and hypomyelination

Vetrivel Sengottuvel / Monalisa Hota / Jeongah Oh / Dwight L. Galam / Bernice H. Wong / Markus R. Wenk / Sujoy Ghosh / Federico Torta / David L. Silver

The Journal of Clinical Investigation, Vol 133, Iss

2023 Volume 12

Abstract: Patients with autosomal recessive microcephaly 15 caused by deficiency in the sodium-dependent lysophosphatidylcholine (LPC) transporter major facilitator superfamily domain–containing 2a (Mfsd2a) present with both microcephaly and hypomyelination, ... ...

Abstract	Patients with autosomal recessive microcephaly 15 caused by deficiency in the sodium-dependent lysophosphatidylcholine (LPC) transporter major facilitator superfamily domain–containing 2a (Mfsd2a) present with both microcephaly and hypomyelination, suggesting an important role for LPC uptake by oligodendrocytes in the process of myelination. Here we demonstrate that Mfsd2a is specifically expressed in oligodendrocyte precursor cells (OPCs) and is critical for oligodendrocyte development. Single-cell sequencing of the oligodendrocyte lineage revealed that OPCs from OPC-specific Mfsd2a-KO mice (2aOKO mice) underwent precocious differentiation into immature oligodendrocytes and impaired maturation into myelinating oligodendrocytes, correlating with postnatal brain hypomyelination. 2aOKO mice did not exhibit microcephaly, a finding consistent with the notion that microcephaly is the consequence of an absence of LPC uptake at the blood-brain barrier rather than a deficiency in OPCs. Lipidomic analysis showed that OPCs and iOLs from 2aOKO mice had significantly decreased levels of phospholipids containing omega-3 fatty acids, with a corresponding increase in unsaturated fatty acids, the latter being products of de novo synthesis governed by Srebp-1. RNA-Seq indicated activation of the Srebp-1 pathway and defective expression of regulators of oligodendrocyte development. Taken together, these findings indicate that the transport of LPCs by Mfsd2a in OPCs is important for maintaining OPC state to regulate postnatal brain myelination.
Keywords	Metabolism ; Neuroscience ; Medicine ; R
Subject code	571
Language	English
Publishing date	2023-06-01T00:00:00Z
Publisher	American Society for Clinical Investigation
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Pharmacological inhibition of lipolysis prevents adverse metabolic outcomes during glucocorticoid administration

Melissa A. Linden / Susan J. Burke / Humza A. Pirzadah / Tai-Yu Huang / Heidi M. Batdorf / Walid K. Mohammed / Katarina A. Jones / Sujoy Ghosh / Shawn R. Campagna / J. Jason Collier / Robert C. Noland

Molecular Metabolism, Vol 74, Iss , Pp 101751- (2023)

2023

Abstract: Objective: Glucocorticoids are one of the most commonly prescribed classes of anti-inflammatory drugs; however, chronic treatment promotes iatrogenic (drug-induced) diabetes. As part of their physiological role, glucocorticoids stimulate lipolysis to ... ...

Abstract	Objective: Glucocorticoids are one of the most commonly prescribed classes of anti-inflammatory drugs; however, chronic treatment promotes iatrogenic (drug-induced) diabetes. As part of their physiological role, glucocorticoids stimulate lipolysis to spare glucose. We hypothesized that persistent stimulation of lipolysis during glucocorticoid therapy plays a causative role in the development of iatrogenic diabetes. Methods: Male C57BL/6J mice were given 100 μg/mL corticosterone (Cort) in the drinking water for two weeks and were fed either normal chow (TekLad 8640) or the same diet supplemented with an adipose triglyceride lipase inhibitor (Atglistatin - 2 g/kg diet) to inhibit the first step of lipolysis. Results: Herein, we report for the first time that glucocorticoid administration promotes a unique state of substrate excess and energetic overload in skeletal muscle that primarily results from the rampant mobilization of endogenous fuels. Inhibiting lipolysis protected mice from Cort-induced gains in fat mass, excess ectopic lipid accrual, hyperinsulinemia, and hyperglycemia. The role lipolysis plays in Cort-mediated pathology appears to differ between tissues. Within skeletal muscle, Cort-induced lipolysis facilitated diversion of glucose-derived carbons toward the pentose phosphate and hexosamine biosynthesis pathways but contributed to <3% of the Cort-induced genomic adaptations. In contrast, Cort stimulation of lipolysis accounted for ∼35% of the genomic changes in the liver but had minimal impact on hepatic metabolites reported. Conclusions: These data support the idea that activation of lipolysis plays a causal role in the progression toward iatrogenic diabetes during glucocorticoid therapy with differential impact on skeletal muscle and liver.
Keywords	Glucocorticoid ; Substrate overload ; Lipolysis ; Adipose triglyceride lipase ; Iatrogenic diabetes ; Internal medicine ; RC31-1245
Subject code	572
Language	English
Publishing date	2023-08-01T00:00:00Z
Publisher	Elsevier
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Artificial intelligence in brain MRI analysis of Alzheimer's disease over the past 12 years: A systematic review.

Frizzell, Tory O / Glashutter, Margit / Liu, Careesa C / Zeng, An / Pan, Dan / Hajra, Sujoy Ghosh / D'Arcy, Ryan C N / Song, Xiaowei

Ageing research reviews

2022 Volume 77, Page(s) 101614

Abstract: Introduction: Multiple structural brain changes in Alzheimer's disease (AD) and mild cognitive impairment (MCI) have been revealed on magnetic resonance imaging (MRI). There is a fast-growing effort in applying artificial intelligence (AI) to analyze ... ...

Abstract	Introduction: Multiple structural brain changes in Alzheimer's disease (AD) and mild cognitive impairment (MCI) have been revealed on magnetic resonance imaging (MRI). There is a fast-growing effort in applying artificial intelligence (AI) to analyze these data. Here, we review and evaluate the AI studies in brain MRI analysis with synthesis. Methods: A systematic review of the literature, spanning the years from 2009 to 2020, was completed using the PubMed database. AI studies using MRI imaging to investigate normal aging, mild cognitive impairment, and AD-dementia were retrieved for review. Bias assessment was completed using the PROBAST criteria. Results: 97 relevant studies were included in the review. The studies were typically focused on the classification of AD, MCI, and normal aging (71% of the reported studies) and the prediction of MCI conversion to AD (25%). The best performance was achieved by using the deep learning-based convolution neural network algorithms (weighted average accuracy 89%), in contrast to 76-86% using Logistic Regression, Support Vector Machines, and other AI methods. Discussion: The synthesized evidence is paramount to developing sophisticated AI approaches to reliably capture and quantify multiple subtle MRI changes in the whole brain that exemplify the complexity and heterogeneity of AD and brain aging.
MeSH term(s)	Alzheimer Disease/diagnostic imaging ; Artificial Intelligence ; Brain/diagnostic imaging ; Cognitive Dysfunction/diagnostic imaging ; Humans ; Magnetic Resonance Imaging/methods
Language	English
Publishing date	2022-03-28
Publishing country	England
Document type	Journal Article ; Review ; Systematic Review ; Research Support, Non-U.S. Gov't
ZDB-ID	2075672-0
ISSN	1872-9649 ; 1568-1637
ISSN (online)	1872-9649
ISSN	1568-1637
DOI	10.1016/j.arr.2022.101614
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Article ; Online: A map of the PGC-1α- and NT-PGC-1α-regulated transcriptional network in brown adipose tissue

Ji Suk Chang / Sujoy Ghosh / Susan Newman / J. Michael Salbaum

Scientific Reports, Vol 8, Iss 1, Pp 1-

2018 Volume 10

Abstract: Abstract Transcriptional coactivator PGC-1α and its splice variant NT-PGC-1α play crucial roles in regulating cold-induced thermogenesis in brown adipose tissue (BAT). PGC-1α and NT-PGC-1α are highly induced by cold in BAT and subsequently bind to and ... ...

Abstract	Abstract Transcriptional coactivator PGC-1α and its splice variant NT-PGC-1α play crucial roles in regulating cold-induced thermogenesis in brown adipose tissue (BAT). PGC-1α and NT-PGC-1α are highly induced by cold in BAT and subsequently bind to and coactivate many transcription factors to regulate expression of genes involved in mitochondrial biogenesis, fatty acid oxidation, respiration and thermogenesis. To identify the complete repertoire of PGC-1α and NT-PGC-1α target genes in BAT, we analyzed genome-wide DNA-binding and gene expression profiles. We find that PGC-1α-/NT-PGC-1α binding broadly associates with cold-mediated transcriptional activation. In addition to their known target genes in mitochondrial biogenesis and oxidative metabolism, PGC-1α and NT-PGC-1α additionally target a broad spectrum of genes involved in diverse biological pathways including ubiquitin-dependent protein catabolism, ribonucleoprotein complex biosynthesis, phospholipid biosynthesis, angiogenesis, glycogen metabolism, phosphorylation, and autophagy. Our findings expand the number of genes and biological pathways that may be regulated by PGC-1α and NT-PGC-1α and provide further insight into the transcriptional regulatory network in which PGC-1α and NT-PGC-1α coordinate a comprehensive transcriptional response in BAT in response to cold.
Keywords	Medicine ; R ; Science ; Q
Subject code	570
Language	English
Publishing date	2018-05-01T00:00:00Z
Publisher	Nature Publishing Group
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: In silico analysis of altered expression of long non-coding RNA in SARS-CoV-2 infected cells and their possible regulation by STAT1, STAT3 and interferon regulatory factors

Sayantan Laha / Chinmay Saha / Susmita Dutta / Madhurima Basu / Raghunath Chatterjee / Sujoy Ghosh / Nitai P. Bhattacharyya

Heliyon, Vol 7, Iss 3, Pp e06395- (2021)

2021

Abstract: Altered expression of long noncoding RNA (lncRNA), longer than 200 nucleotides without potential for coding protein, has been observed in diverse human diseases including viral diseases. It is largely unknown whether lncRNA would deregulate in SARS-CoV-2 ...

Abstract	Altered expression of long noncoding RNA (lncRNA), longer than 200 nucleotides without potential for coding protein, has been observed in diverse human diseases including viral diseases. It is largely unknown whether lncRNA would deregulate in SARS-CoV-2 infection, causing ongoing pandemic COVID-19. To identify, if lncRNA was deregulated in SARS-CoV-2 infected cells, we analyzed in silico the data in GSE147507. It was revealed that expression of 20 lncRNA like MALAT1, NEAT1 was increased and 4 lncRNA like PART1, TP53TG1 was decreased in at least two independent cell lines infected with SARS-CoV-2. Expression of NEAT1 was also increased in lungs tissue of COVID-19 patients. The deregulated lncRNA could interact with more than 2800 genes/proteins and 422 microRNAs as revealed from the database that catalogs experimentally determined interactions. Analysis with the interacting gene/protein partners of deregulated lncRNAs revealed that these genes/proteins were associated with many pathways related to viral infection, inflammation and immune functions. To find out whether these lncRNAs could be regulated by STATs and interferon regulatory factors (IRFs), we used ChIPBase v2.0 that catalogs experimentally determined binding from ChIP-seq data. It was revealed that any one of the transcription factors IRF1, IRF4, STAT1, STAT3 and STAT5A had experimentally determined binding at regions within -5kb to +1kb of the deregulated lncRNAs in at least 2 independent cell lines/conditions. Our analysis revealed that several lncRNAs could be regulated by IRF1, IRF4 STAT1 and STAT3 in response to SARS-CoV-2 infection and lncRNAs might be involved in antiviral response. However, these in silico observations are necessary to be validated experimentally.
Keywords	Long non-coding RNA ; NEAT1 ; MALAT1 ; Interferon regulatory factors ; SARS-CoV-2 ; COVID-19 ; Science (General) ; Q1-390 ; Social sciences (General) ; H1-99
Subject code	570
Language	English
Publishing date	2021-03-01T00:00:00Z
Publisher	Elsevier
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: The acute transcriptional responses to dietary methionine restriction are triggered by inhibition of ternary complex formation and linked to Erk1/2, mTOR, and ATF4

Kirsten P. Stone / Sujoy Ghosh / Jean Paul Kovalik / Manda Orgeron / Desiree Wanders / Landon C. Sims / Thomas W. Gettys

Scientific Reports, Vol 11, Iss 1, Pp 1-

2021 Volume 16

Abstract: Abstract The initial sensing of dietary methionine restriction (MR) occurs in the liver where it activates an integrated stress response (ISR) that quickly reduces methionine utilization. The ISR program is regulated in part by ATF4, but ATF4’s ... ...

Abstract	Abstract The initial sensing of dietary methionine restriction (MR) occurs in the liver where it activates an integrated stress response (ISR) that quickly reduces methionine utilization. The ISR program is regulated in part by ATF4, but ATF4’s prototypical upstream regulator, eIF2α, is not acutely activated by MR. Bioinformatic analysis of RNAseq and metabolomics data from liver samples harvested 3 h and 6 h after initiating MR shows that general translation is inhibited at the level of ternary complex formation by an acute 50% reduction of hepatic methionine that limits formation of initiator methionine tRNA. The resulting ISR is induced by selective expression of ATF4 target genes that mediate adaptation to reduced methionine intake and return hepatic methionine to control levels within 4 days of starting the diet. Complementary in vitro experiments in HepG2 cells after knockdown of ATF4, or inhibition of mTOR or Erk1/2 support the conclusion that the early induction of genes by MR is partially dependent on ATF4 and regulated by both mTOR and Erk1/2. Taken together, these data show that initiation of dietary MR induces an mTOR- and Erk1/2-dependent stress response that is linked to ATF4 by the sharp, initial drop in hepatic methionine and resulting repression of translation pre-initiation.
Keywords	Medicine ; R ; Science ; Q
Language	English
Publishing date	2021-02-01T00:00:00Z
Publisher	Nature Portfolio
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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