[A case of advanced pancreatic cancer with oculomotor nerve palsy caused by herpes zoster after introduction of gemcitabine plus nab-paclitaxel].

A 76-year-old woman was admitted to our hospital due to diabetes and was diagnosed with advanced pancreatic cancer for which she received gemcitabine plus nab-paclitaxel. Fourteen days later, eruptions were observed in the first division of the right trigeminal nerve;she was then diagnosed with herpes zoster and was successfully treated with antiviral therapy. Seven days after the herpes zoster infection, right ophthalmoplegia appeared. Oculomotor nerve palsy secondary to herpes zoster ophthalmicus was suspected and she was treated with steroid pulse therapy. Her symptoms improved, and chemotherapy was able to be continued. Her ophthalmoplegia had almost fully resolved 41 days after the onset of herpes zoster infection.

[A difficult case of a stent-stone complex removal with endoscopic lithotomy].

An 88-year-old patient had undergone endoscopic stenting for the treatment of acute cholangitis caused by choledocholithiasis. After a year and two months, he presented with cholangitis caused by common bile duct stones that formed a stent-stone complex. Another stent was observed adjacent to the old stent;however, the cholangitis relapsed in a short term. Thus, we planned to remove as many stones as possible. These stones were not free-floating and had affected the bile duct. Endoscopic mechanical lithotripsy was attempted;however, it failed. He was successfully treated using peroral cholangioscopy and electrohydraulic lithotripsy. After three months, he developed cholangitis because of the recurrence of choledocholithiasis. After removing as many stones as possible and performing endoscopic stenting, he was followed up as an outpatient. He had no symptoms for seven months after the procedure.

Assessment of 8-methosypsoralen, lomefloxacin, sparfloxacin, and Pirfenidone phototoxicity in Long-Evans rats.

Phototoxicity has a strong impact on drug development. Although several animal models have been developed to quantitatively assess human risks, none have been validated for standardized use. In this study, we validated an in vivo phototoxicity model using Long-Evans (LE) rats treated with 4 well-known phototoxic drugs, namely 8-methoxypsoralen, lomefloxacin, sparfloxacin, and pirfenidone. Daily macroscopic observations of skin and eyes, ophthalmological examinations 4 days after dosing, and blood sampling for toxicokinetics (TKs) were performed after exposure of treated animals to ultraviolet, and dose-dependent eye and/or skin reactions were noted for all compounds. Margins of safety were calculated when possible and correlated well with known relative phototoxicity of the 4 compounds. We conclude that the present in vivo phototoxicity assay using LE rats with TK analysis can be used to quantitatively predict the risk of pharmaceutical phototoxicity in humans.