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Thoracic Endometriosis Syndrome in a 75-Year-Old Woman
No full textThoracic endometriosis syndrome (TES) is a rare condition where endometrial tissue is found in the pleura, parenchyma, and/or diaphragm. Haemoptysis is a common manifestation of pulmonary endometriosis and can be cyclic, aligning with the menstrual cycle. Patients can present with residual cough once menses have stopped. Other manifestations are recurrent pneumothorax and/or pleural effusions associated with menses. On imaging, pulmonary nodules or implants of endometrial tissue along the diaphragm can be present and be confirmed by biopsy. While most cases of TES occur in menstruating females in their thirties on the right side, our case is unique since we report a postmenopausal female with TES on the left side without the typical clinical manifestations
Pannexin1 Mediates Early-Life Seizure-Induced Social Behavior Deficits
No full textThere is a high co-morbidity between childhood epilepsy and autism spectrum disorder (ASD), with age of seizure onset being a critical determinant of behavioral outcomes. The interplay between these comorbidities has been investigated in animal models with results showing that the induction of seizures at early post-natal ages leads to learning and memory deficits and to autistic-like behavior in adulthood. Modifications of the excitation/inhibition (glutamate/GABA, ATP/adenosine) balance that follows early-life seizures (ELS) are thought to be the physiological events that underlie neuropsychiatric and neurodevelopmental disorders. Although alterations in purinergic/adenosinergic signaling have been implicated in seizures and ASD, it is unknown whether the ATP release channels, Pannexin1 (Panx1), contribute to ELS-induced behavior changes. To tackle this question, we used the ELS-kainic acid model in transgenic mice with global and cell type specific deletion of Panx1 to evaluate whether these channels were involved in behavioral deficits that occur later in life. Our studies show that ELS results in Panx1 dependent social behavior deficits and also in poor performance in a spatial memory test that does not involve Panx1. These findings provide support for a link between ELS and adult behavioral deficits. Moreover, we identify neuronal and not astrocyte Panx1 as a potential target to specifically limit astrogliosis and social behavioral deficits resultant from early-life seizures
Kidney Transplant of the Undocumented Immigrant: A Proposal Whose Benefits Outweigh the Status Quo
No full textCan Immunotherapy Treat Food Allergies?
No full textFood allergies among children are highly prevalent. The elimination diet and fear of allergic reactions cause anxiety in many children and their parents. Immunotherapy stimulates the production of Treg cells which inhibit IgE-mediated allergic reactions. This can successfully desensitize children to their allergens. Subcutaneous immunotherapy can be used for environmental allergens while sublingual or oral immunotherapy should be used for food allergies. There are some risks associated with oral immunotherapy and research is ongoing to study the safety and efficacy of oral immunotherapy
Ethanol-Containing Mouthwash: Is it Safe? Exploring the Potential Risks and Benefits
No full textThis thesis investigates the safety of ethanol-containing mouthwash, focusing on the risks and benefits associated with the ethanol in mouthwash and its metabolic product, acetaldehyde. While ethanol is an effective antimicrobial agent, its carcinogenic and cytotoxic effects raise some concerns. This paper examines ethanol and acetaldehyde exposure, its toxicity, and its effects on oral health. Existing studies have found risks associated with ethanol exposure and have not found decreased effectiveness in ethanol-free mouthwash controlling oral bacteria. Further research is needed to determine the exact risks associated with ethanol-containing mouthwash and should focus on identifying the most effective and safest combination of ingredients in mouthwash
Is it Possible for GLP-1RAs to Combat type 2 Diabetes and its Comorbidities?
No full textType 2 Diabetes Mellitus is a prevalent metabolic disorder characterized by insulin resistance and pancreatic beta-cell dysfunction, leading to chronic hyperglycemia and comorbidities such as obesity and cardiovascular disease. Traditional treatments focus on glycemic control, but often fail to address the broader spectrum of related conditions. This study investigates the potential of glucagon-like peptide-1 receptor agonists (GLP-1RAs) to combat type 2 diabetes and its comorbidities through their diverse mechanisms of action. GLP-1RAs not only improve glycemic control by enhancing insulin secretion and inhibiting glucagon release, but also promote weight loss, reduce inflammation, and lower cardiovascular risk. The efficacy of GLP-1RAs in achieving these benefits was examined through mechanisms independent of their glucose-lowering effects, such as suppressing appetite in specific brain regions and triggering macrophage phenotype switching. The findings suggest that GLP-1RAs offer a comprehensive approach to managing type 2 diabetes and its associated comorbidities, providing a promising therapeutic avenue that extends beyond standard diabetes medications
Mtorc2 in Distal Convoluted Tubule and Renal K1 Excretion During High Dietary K1 Intake
No full textBackground Renal mechanistic target of rapamycin complex 2 (mTORc2) plays a role in regulating renal K1 excretion (renal-EK) and K1 homeostasis. Inhibition of renal mTORc2 causes hyperkalemia due to suppressing epithelial Na1 channel and renal outer medullary K1 (Kir1.1) in the collecting duct. We now explore whether mTORc2 of distal convoluted tubules (DCTs) regulates basolateral Kir4.1/Kir5.1, Na-Cl cotransporter (NCC), and renal-EK. Methods We used patch-clamp technique to examine basolateral Kir4.1/Kir5.1 in early DCT, immunoblotting, and immunofluorescence to examine NCC expression and in vivo measurement of urinary K1 excretion to determine baseline renal-EK in mice treated with an mTORc2 inhibitor and in DCT-specific rapamycin-insensitive companion of mTOR knockout (DCT-RICTOR-KO) mice. Results Inhibition of mTORc2 with AZD8055 abolished high-K1–induced inhibition of Kir4.1/Kir5.1 in DCT, high potassium–induced depolarization of the DCT membrane, and high potassium–induced suppression of phosphorylated Na-Cl cotransporter (pNCC) expression. AZD8055 stimulated the 40-pS inwardly rectifying K1 channel (Kir4.1/Kir5.1-heterotetramer) in early DCT in the mice on overnight high potassium intake; this effect was absent in the presence of protein kinase C inhibitors, which also stimulated Kir4.1/Kir5.1. AZD8055 treatment decreased renal-EK in animals on overnight high-potassium diet. Deletion of RICTOR in the DCT increased the Kir4.1/Kir5.1-mediated K1 currents, hyperpolarized the DCT membrane, and increased the expression of pWNK4 and pNCC. Renal-EK was lower and plasma K1 was higher in DCT-RICTOR-KO mice than corresponding control mice. In addition, overnight high-potassium diet did not inhibit Kir4.1/Kir5.1 activity in the DCT and failed to inhibit the expression of pNCC in DCT-RICTOR-KO mice. Overnight high potassium intake stimulated renal-EK in control mice, but this effect was attenuated in DCT-RICTOR-KO mice. Thus, overnight high potassium intake induced hyperkalemia in DCT-RICTOR-KO mice but not in control mice. Conclusions mTORc2 of the DCT inhibits Kir4.1/Kir5.1 activity and NCC expression and stimulates renal-EK during high potassium intake
Acute Subdural Hematoma Following Lumbar Cerebrospinal Fluid Drain for Thoracoabdominal Aortic Aneurysm Repair
No full textIntracranial Subdural hematoma is a rare but potentially catastrophic complication after Cerebrospinal fluid drainage (CSFD) for thoracoabdominal aortic aneurysm repair. We report a patient with an acute left frontoparietal subdural hematoma following insertion of lumbar drain for prevention of spinal cord ischemia after thoracoabdominal aortic aneurysm repair. He presented with delayed neurological deficits which were completely reversed after surgery. The rationale for systematic use of lumbar drainage of Cerebrospinal fluid (CSF) in Thoracoabdominal Aortic Aneurysm (TAAA) repair is discussed
TGF-Β Signaling: Critical Nexus of Fibrogenesis and Cancer
No full textThe transforming growth factor-beta (TGF-β) signaling pathway is a vital regulator of cell proliferation, differentiation, apoptosis, and extracellular matrix production. It functions through canonical SMAD-mediated processes and noncanonical pathways involving MAPK cascades, PI3K/AKT, Rho-like GTPases, and NF-κB signaling. This intricate signaling system is finely tuned by interactions between canonical and noncanonical pathways and plays key roles in both physiologic and pathologic conditions including tissue homeostasis, fibrosis, and cancer progression. TGF-β signaling is known to have paradoxical actions. Under normal physiologic conditions, TGF-β signaling promotes cell quiescence and apoptosis, acting as a tumor suppressor. In contrast, in pathological states such as inflammation and cancer, it triggers processes that facilitate cancer progression and tissue remodeling, thus promoting tumor development and fibrosis. Here, we detail the role that TGF-β plays in cancer and fibrosis and highlight the potential for future theranostics targeting this pathway