ABSTRACT
We report a case of Tissierella praeacuta bacteremia and septic thrombophlebitis of the ovarian vein as a rare puerperal complication in a young patient. She was successfully managed with subcutaneous low molecular weight heparin (LMWH) and intravenous (IV) antibiotics before transitioning to a prolonged course of oral antibiotics at discharge.
ABSTRACT
We report a case of progressive, severe mpox virus (MPXV) infection in a patient with AIDS despite a standard course of tecovirimat. He significantly improved after administration of vaccinia immune globulin intravenous (VIGIV) highlighting its use as an adjunct for severe disease in immunocompromised hosts.
Subject(s)
Acquired Immunodeficiency Syndrome , Mpox (monkeypox) , Vaccinia , Male , Humans , Vaccinia/therapy , HIV , Immunoglobulins , Immunologic FactorsABSTRACT
Pregnane X Receptor (PXR), a master regulator of drug metabolism and inflammation, is abundantly expressed in the gastrointestinal tract. Baicalein and its O-glucuronide baicalin are potent anti-inflammatory and anti-cancer herbal flavonoids that undergo a complex cycle of interconversion in the liver and gut. We sought to investigate the role these flavonoids play in inhibiting gut inflammation by an axis involving PXR and other potential factors. The consequences of PXR regulation and activation by the herbal flavonoids, baicalein and baicalin were evaluated in vitro in human colon carcinoma cells and in vivo using wild-type, Pxr-null, and humanized (hPXR) PXR mice. Baicalein, but not its glucuronidated metabolite baicalin, activates PXR in a Cdx2-dependent manner in vitro, in human colon carcinoma LS174T cells, and in the murine colon in vivo. While both flavonoids abrogate dextran sodium sulfate (DSS)-mediated colon inflammation in vivo, oral delivery of a potent bacterial ß-glucuronidase inhibitor eliminates baicalin's effect on gastrointestinal inflammation by preventing the microbial conversion of baicalin to baicalien. Finally, reduction of gastrointestinal inflammation requires the binding of Cdx2 to a specific proximal site on the PXR promoter. Pharmacological targeting of intestinal PXR using natural metabolically labile ligands could serve as effective and potent therapeutics for gut inflammation that avert systemic drug interactions.
Subject(s)
Colitis/drug therapy , Colitis/metabolism , Flavanones/pharmacology , Homeodomain Proteins/metabolism , Intestinal Mucosa/metabolism , Intestines/drug effects , Receptors, Steroid/metabolism , Transcription Factors/metabolism , Animals , Anti-Inflammatory Agents/pharmacology , Anti-Inflammatory Agents/therapeutic use , CDX2 Transcription Factor , Cell Line, Tumor , Colitis/chemically induced , DNA-Directed RNA Polymerases/metabolism , Disease Models, Animal , Flavanones/therapeutic use , Flavonoids/pharmacology , Flavonoids/therapeutic use , Gene Expression Regulation/drug effects , Humans , Mice , Models, Molecular , Pregnane X Receptor , Promoter Regions, Genetic/genetics , Protein Structure, Tertiary , Receptors, Steroid/chemistry , Receptors, Steroid/geneticsABSTRACT
Management of bone density loss, as the result of calcium malabsorption in celiac disease, is critical in preventing premature bone fracture. As many of these patients need follow-up with primary care providers, internists are expected to be aware of screening and prompt management of osteopenia or osteoporosis in celiac disease. We present a case of a 32-year-old man with celiac disease who was diagnosed with osteoporosis. He was treated with calcium, vitamin D and alendronate which improved bone mineral density. This case illustrates the importance of using bisphosphonate in treating osteoporosis in celiac disease.
ABSTRACT
We present a case of fatal rebound hyperkalemia in a patient with thyrotoxic periodic paralysis (TPP) treated with potassium supplementation. Although TPP is a rare hyperthyroidism-related endocrine disorder seen predominantly in men of Asian origin, the diagnosis should be considered in patients of non-Asian origins presenting with hypokalemia, muscle weakness or acute paralysis. The condition may present as a life threatening emergency and unfamiliarity with the disease could result in a fatal outcome. Immediate therapy with potassium chloride supplementation may foster a rapid recovery of muscle strength and prevent cardiac arrhythmias secondary to hypokalemia, but with a risk of rebound hyperkalemia.
