Multi-modality Typical Imaging features in Superior Pulmonary Sulcus (Pancoast) tumour: A case report

A 53 years old male patient came with complaints of pain and tingling sensation of left shoulder joint & left upper limb since 3 months. Patient is a chronic smoker with past history pulmonary tuberculosis. The patient had completed ATT 15 years bac

Post COVID-19 Avascular Necrosis Of Hip – A Rare Case Report.

27 year old male diagnosed with COVID 19 got admitted in our hospital, and was treated on antibiotics, antivirals and short course of steroids. He was discharged after an uneventful course and resolution of symptoms. Three months later, patient presented with acute hip pain and was screened plain radiograph of Hip

Post total hip arthroplasty pseudo- tumour – A rare case report.

A 62-year-old female came with complaints of slow growing mass in the left hip region for 4-5 months, associated with dull aching pain. Range of movements were restricted due to pain and mass. She underwent Total Hip arthroplasty (THA) 11 months ago

Inverted papilloma: A case report

A 41 year old male came with the complaints of nasal obstruction and on and off headache since 1 year. No history of epistaxis

Pericallosal lipoma with corpus callosal dysgenesis in an elderly patient: A rare case report

A 55 year old female patient came to the neurology OPD with complaints of giddiness since 1month and vomiting since 15 days. There was no history of focal neurological deficit/ fever/ seizures/ headache/visual disturbances. No history of any co-morbidities. Neurological examination was normal

Radiological review of dumbbell-shaped spinal schwannoma with extradural and intradural-extramedullary components

Complains of paresthesia in the bilateral lower limbs. No e/o pain. CBC, RFT, LFT, ESR, CRP are within normal limits

Renal Thrombotic Microangiopathy in Mice with Combined Deletion of Endocytic Recycling Regulators EHD3 and EHD4

Eps15 Homology Domain-containing 3 (EHD3), a member of the EHD protein family that regulates endocytic recycling, is the first protein reported to be specifically expressed in the glomerular endothelium in the kidney; therefore we generated Ehd3–/– mice and assessed renal development and pathology. Ehd3–/– animals showed no overt defects, and exhibited no proteinuria or glomerular pathology. However, as the expression of EHD4, a related family member, was elevated in the glomerular endothelium of Ehd3–/– mice and suggested functional compensation, we generated and analyzed Ehd3–/–; Ehd4–/– mice. These mice were smaller, possessed smaller and paler kidneys, were proteinuric and died between 3–24 weeks of age. Detailed analyses of Ehd3–/–; Ehd4–/– kidneys demonstrated thrombotic microangiopathy (TMA)-like glomerular lesions including thickening and duplication of glomerular basement membrane, endothelial swelling and loss of fenestrations. Other changes included segmental podocyte foot process effacement, mesangial interposition, and abnormal podocytic and mesangial marker expression. The glomerular lesions observed were strikingly similar to those seen in human pre-eclampsia and mouse models of reduced VEGF expression. As altered glomerular endothelial VEGFR2 expression and localization and increased apoptosis was observed in the absence of EHD3 and EHD4, we propose that EHD-mediated endocytic traffic of key surface receptors such as VEGFR2 is essential for physiological control of glomerular function. Furthermore, Ehd3–/–; Ehd4–/– mice provide a unique model to elucidate mechanisms of glomerular endothelial injury which is observed in a wide variety of human renal and extra-renal diseases

Chlamydia trachomatis Co-opts the FGF2 Signaling Pathway to Enhance Infection

The molecular details of Chlamydia trachomatis binding, entry, and spread are incompletely understood, but heparan sulfate proteoglycans (HSPGs) play a role in the initial binding steps. As cell surface HSPGs facilitate the interactions of many growth factors with their receptors, we investigated the role of HSPG-dependent growth factors in C. trachomatis infection. Here, we report a novel finding that Fibroblast Growth Factor 2 (FGF2) is necessary and sufficient to enhance C. trachomatis binding to host cells in an HSPG-dependent manner. FGF2 binds directly to elementary bodies (EBs) where it may function as a bridging molecule to facilitate interactions of EBs with the FGF receptor (FGFR) on the cell surface. Upon EB binding, FGFR is activated locally and contributes to bacterial uptake into non-phagocytic cells. We further show that C. trachomatis infection stimulates fgf2 transcription and enhances production and release of FGF2 through a pathway that requires bacterial protein synthesis and activation of the Erk1/2 signaling pathway but that is independent of FGFR activation. Intracellular replication of the bacteria results in host proteosome-mediated degradation of the high molecular weight (HMW) isoforms of FGF2 and increased amounts of the low molecular weight (LMW) isoforms, which are released upon host cell death. Finally, we demonstrate the in vivo relevance of these findings by showing that conditioned medium from C. trachomatis infected cells is enriched for LMW FGF2, accounting for its ability to enhance C. trachomatis infectivity in additional rounds of infection. Together, these results demonstrate that C. trachomatis utilizes multiple mechanisms to co-opt the host cell FGF2 pathway to enhance bacterial infection and spread