Urinary Retention and Body Lateropulsion by Lateral Medullary Infarction: A Case Report.

We describe a case of lateral medullary infarction (LMI) presenting with both body lateropulsion (BL) and urinary retention (UR). A 29-year-old Filipino male with a history of untreated hypertension, dyslipidemia, hyperuricemia, and obesity presented with acute onset of rotatory vertigo, gait disturbance, and left-sided sensory loss. Initial examination revealed horizontal nystagmus to the left, right-sided facial sensory loss, and left-sided limb sensory loss, without cranial nerve deficits or UR.

Quality Evaluation of Gentamicin Sulfate Reference Standards in Japanese Pharmacopoeia Using Hydrophilic Interaction Chromatography Combined With Tandem Mass Spectrometry.

Background: Through the recent development of analytical technology, antibiotics quantification in the Japanese Pharmacopoeia (JP) has changed from traditional microbiological assays to physicochemical methods with high specificity and precision. However, for several multicomponent antibiotics without typical UV absorption, potency cannot be directly determined using instrumental methods such as high-performance liquid chromatography; therefore, traditional microbiological assays are still used. Gentamicin sulfate (GmS), which consists of three major components, C1, C1a, and C2, is such a typical antibiotic, and its antimicrobial potency continues to be assayed using microbiological methods in JP monographs.