1.Temporal, buccal and masticator space infections in an immunocompromised patient: report on a rare case
Chaitra Kalkur ; Atul P. Sattur ; Venkatesh G. Naikmasur ; Anusha Rangare Lakshman ; Nilofer Halim
Pacific Journal of Medical Sciences 2018;18(1):61-65
AIDS” is a term used to describe the various clinical syndromes, specific opportunistic infections or
malignancies that occur with HIV infection. Oral manifestations are common in people with HIV infection. .Oral lesions may be due to decline in immune function. Hence patients with AIDS are subjected to recurrent, Life threatening opportunistic infection. Here is a case report of a 70 year old female who presented with right buccal, masticator and submandibular space infection. A routine blood test reveals seropositivity positive for HIV infection. She was treated with antibiotics and underwent an incision and drainage following hospitalization
2.Acromegaloid Facial Appearance Syndrome: A New Case in India.
Arpita RAI ; Atul P SATTUR ; Venkatesh G NAIKMASUR
Journal of Genetic Medicine 2013;10(1):57-61
Acromegaloid Facial Appearance syndrome is a very rare syndrome combining acromegaloid-like facial appearance, thickened lips and oral mucosa and acral enlargement. Progressive facial dysmorphism is characterized by a coarse facies, a long bulbous nose, high-arched eyebrows, and thickening of the lips, oral mucosa leading to exaggerated rugae and frenula, furrowed tongue and narrow palpebral fissures. We report a case of acromegaloid facial appearance syndrome in a 19-year-old male patient who presented with all the characteristic features of the syndrome along with previously unreported anomalies like dystrophic nails, postaxial polydactyly and incisal notching of teeth.
Acromegaly
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Eyebrows
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Facies
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Humans
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Hypertrichosis
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India
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Limb Deformities, Congenital
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Lip
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Male
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Mouth Mucosa
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Nails
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Nose
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Polydactyly
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Tongue, Fissured
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Tooth
3.Disseminated non-Hodgkin's lymphoma presenting as bilateral salivary gland enlargement: a case report.
Manjunatha M REVANAPPA ; Atul P SATTUR ; Venkatesh G NAIKMASUR ; Arpita Rai THAKUR
Imaging Science in Dentistry 2013;43(1):59-62
Non-Hodgkin's lymphoma (NHL) constitutes a group of malignancies those arises from cellular components of lymphoid or extranodal tissues. The head and neck is the most common area for the presentation of these lymphoproliferative disorders. Primary involvement of salivary glands is uncommon. This report described a case of a 73-year-old female patient who presented with involvement of both nodal and extranodal sites, with predominant involvement of salivary glands. The tumor staging worked up along with imaging, histopathological, and immunohistochemical findings were discussed. Computed tomographic images showed the involvement of Waldeyer's ring, larynx, orbit, and spleen. This report described imaging and prognostic tumor markers in diagnosing, treatment planning, and prognosis.
Biomarkers, Tumor
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Female
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Head
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Humans
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Larynx
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Lymphoma, Large B-Cell, Diffuse
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Lymphoma, Non-Hodgkin
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Lymphoproliferative Disorders
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Neck
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Neoplasm Staging
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Orbit
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Prognosis
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Salivary Glands
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Spleen
4.Lockdowns, Community Mobility Patterns, and COVID-19: A Retrospective Analysis of Data from 16 Countries
U VENKATESH ; Aravind GANDHI P ; Tasnim ARA ; Md Mahabubur RAHMAN ; Jugal KISHORE
Healthcare Informatics Research 2022;28(2):160-169
Objectives:
During the coronavirus disease 2019 (COVID-19) pandemic, countries around the world framed specific laws and imposed varying degrees of lockdowns to ensure the maintenance of physical distancing. Understanding changes in temporal and spatial mobility patterns may provide insights into the dynamics of this infectious disease. Therefore, we assessed the efficacy of lockdown measures in 16 countries worldwide by analyzing the relationship between community mobility patterns and the doubling time of COVID-19.
Methods:
We performed a retrospective record-based analysis of population-level data on the doubling time for COVID-19 and community mobility. The doubling time for COVID-19 was calculated based on the laboratory-confirmed cases reported daily over the study period (from February 15 to May 2, 2020). Principal component analysis (PCA) of six mobility pattern-related variables was conducted. To explain the magnitude of the effect of mobility on the doubling time, a finite linear distributed lag model was fitted. The k-means clustering approach was employed to identify countries with similar patterns in the significant co-efficient of the mobility index, with the optimal number of clusters derived using Elbow’s method.
Results:
The countries analyzed had reduced mobility in commercial and social places. Reduced mobility had a significant and favorable association with the doubling time of COVID-19—specifically, the greater the mobility reduction, the longer the time taken for the COVID-19 cases to double.
Conclusions
COVID-19 lockdowns achieved the immediate objective of mobility reduction in countries with a high burden of cases.
5.Magnetic Resonance Elastography and Diffusion Weighted Imaging in the Evaluation of Hepatic Fibrosis in Chronic Hepatitis B.
Tiffany P HENNEDIGE ; Gang WANG ; Fiona P LEUNG ; Hind S ALSAIF ; Lynette LS TEO ; Seng Gee LIM ; Aileen WEE ; Sudhakar K VENKATESH
Gut and Liver 2017;11(3):401-408
BACKGROUND/AIMS: Comparison of the accuracy of magnetic resonance elastography (MRE) and diffusion weighted imaging (DWI) for the diagnosis of liver fibrosis in patients with chronic hepatitis B (CHB). METHODS: In this retrospective analysis, we investigated 63 patients with CHB and liver fibrosis. DWI was performed with both breath-hold (DWI-BH) and free-breathing (DWI-FB) sequences (b=0, 500). The mean liver stiffness and apparent diffusion coefficient (ADC) were calculated by drawing regions of interest maps. Fibrosis staging according to the METAVIR system was independently performed by an experienced pathologist. A receiver operating curve (ROC) analysis was conducted to determine the accuracy of MRE, DWI-BH and DWI-FB in the detection and stratification of liver fibrosis. The performance of the detection of significant fibrosis (≥F2), advanced fibrosis (≥F3), and cirrhosis (F4) was also evaluated by comparing areas under the ROC. RESULTS: There was a moderate and significantly negative correlation between the ADC values and liver stiffness. The accuracies for the detection of ≥F2/≥F3/F4 stage fibrosis with DWI-FB, DWI-BH and MRE were 0.84/0.76/0.72, 0.72/0.83/0.79 and 0.99/0.99/0.98, respectively. The performance of MRE was significantly better than DWI-FB and DWI-BH. There were no significant differences between the performance of DWI-FB and DWI-BH. CONCLUSIONS: MRE is more accurate than DWI for the detection and stratification of liver fibrosis in CHB.
Diagnosis
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Diffusion*
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Elasticity Imaging Techniques*
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Fibrosis*
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Hepatitis B, Chronic*
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Hepatitis, Chronic*
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Humans
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Liver
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Liver Cirrhosis
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Retrospective Studies
6.Corrigendum: Magnetic Resonance Elastography and Diffusion Weighted Imaging in the Evaluation of Hepatic Fibrosis in Chronic Hepatitis B
Tiffany P. HENNEDIGE ; Gang WANG ; Fiona P. LEUNG ; Hind S. ALSAIF ; Lynette LS TEO ; Seng Gee LIM ; Aileen WEE ; Sudhakar K. VENKATESH
Gut and Liver 2020;14(4):532-532
7.Integrin alpha 11 in the regulation of the myofibroblast phenotype: implications for fibrotic diseases.
Ruchi BANSAL ; Shigeki NAKAGAWA ; Saleh YAZDANI ; Joop VAN BAARLEN ; Anu VENKATESH ; Anna P KOH ; Won Min SONG ; Nicolas GOOSSENS ; Hideo WATANABE ; Mary B BEASLEY ; Charles A POWELL ; Gert STORM ; Naftali KAMINSKI ; Harry VAN GOOR ; Scott L FRIEDMAN ; Yujin HOSHIDA ; Jai PRAKASH
Experimental & Molecular Medicine 2017;49(11):e396-
Tissue fibrosis, characterized by excessive accumulation of aberrant extracellular matrix (ECM) produced by myofibroblasts, is a growing cause of mortality worldwide. Understanding the factors that induce myofibroblastic differentiation is paramount to prevent or reverse the fibrogenic process. Integrin-mediated interaction between the ECM and cytoskeleton promotes myofibroblast differentiation. In the present study, we explored the significance of integrin alpha 11 (ITGA11), the integrin alpha subunit that selectively binds to type I collagen during tissue fibrosis in the liver, lungs and kidneys. We showed that ITGA11 was co-localized with α-smooth muscle actin-positive myofibroblasts and was correlatively induced with increasing fibrogenesis in mouse models and human fibrotic organs. Furthermore, transcriptome and protein expression analysis revealed that ITGA11 knockdown in hepatic stellate cells (liver-specific myofibroblasts) markedly reduced transforming growth factor β-induced differentiation and fibrotic parameters. Moreover, ITGA11 knockdown dramatically altered the myofibroblast phenotype, as indicated by the loss of protrusions, attenuated adhesion and migration, and impaired contractility of collagen I matrices. Furthermore, we demonstrated that ITGA11 was regulated by the hedgehog signaling pathway, and inhibition of the hedgehog pathway reduced ITGA11 expression and fibrotic parameters in human hepatic stellate cells in vitro, in liver fibrosis mouse model in vivo and in human liver slices ex vivo. Therefore, we speculated that ITGA11 might be involved in fibrogenic signaling and might act downstream of the hedgehog signaling pathway. These findings highlight the significance of the ITGA11 receptor as a highly promising therapeutic target in organ fibrosis.
Animals
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Collagen
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Collagen Type I
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Cytoskeleton
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Extracellular Matrix
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Fibrosis
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Hedgehogs
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Hepatic Stellate Cells
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Humans
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In Vitro Techniques
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Kidney
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Liver
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Liver Cirrhosis
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Lung
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Mice
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Mortality
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Myofibroblasts*
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Phenotype*
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Transcriptome
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Transforming Growth Factors
8.GC-MS analysis of Cocus nucifera flower extract and its effects on heterogeneous symptoms of polycystic ovarian disease in female Wistar rats.
V SOUMYA ; Y Indira MUZIB ; P VENKATESH ; K HARIPRASATH
Chinese Journal of Natural Medicines (English Ed.) 2014;12(9):677-684
AIM:
To evaluate the effect of Cocus nucifera L. flowers in reducing the major multiple symptoms of letrozole-induced polycystic ovarian disease (PCOD) in female rats.
METHOD:
Female, virgin Wistar rats were treated with letrozole (1 mg/kg body wt) to induce PCOD, and after 21 days of induction rats were administered orally with 100 and 200 mg·kg(-1) of Cocus nucifera flower aqueous extract, respectively. Estrus cycle and blood sugar were monitored once a week throughout the study. After scarification, various biochemical parameters, such as antioxidant status (superoxide dismutase (SOD) and glutathione reductase (GSH)) of the uterus homogenate, lipid profile (total cholesterol (TC), high density lipoprotein (HDL), low density lipoprotein (LDL), and triglycerides (TG)) of the serum were determined. Weights of the uterus and ovaries were separately monitored. The characteristics of changes in the ovary were evaluated by histopathological studies.
RESULTS:
GC-MS analysis of the aqueous extract showed the presence of volatile and pharmacologically active phytoconstituents. C. nucifera flower extract-treated groups showed estrus cyclicity and increased uterus weight which indicates the estrogenic effect. The improved blood sugar level, ideal lipid profile, good antioxidant status, and histopathology results revealed the recovery from poly cystic ovaries.
CONCLUSION
The results indicate that C. nucifera flower is a potential medicine for the treatment of PCOD and this study supports the traditional uses of C. nucifera flower.
Animals
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Antioxidants
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metabolism
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Blood Glucose
;
metabolism
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Cocos
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chemistry
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Estrus
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drug effects
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Female
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Flowers
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chemistry
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Gas Chromatography-Mass Spectrometry
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Hypoglycemic Agents
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pharmacology
;
therapeutic use
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Letrozole
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Lipids
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blood
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Nitriles
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Oils, Volatile
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analysis
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pharmacology
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therapeutic use
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Ovary
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drug effects
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pathology
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Phytoestrogens
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pharmacology
;
therapeutic use
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Phytotherapy
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Plant Extracts
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chemistry
;
pharmacology
;
therapeutic use
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Polycystic Ovary Syndrome
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blood
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chemically induced
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drug therapy
;
pathology
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Rats, Wistar
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Triazoles
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Uterus
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drug effects