A Mother in Jeopardy: The Ethics of Pregnancy and Chemotherapy.

JM is a 32-year-old primagravida with polycystic ovary disease. She had extreme difficulty conceiving and was started on clomiphene 6 months ago by her fertility specialist. After doubling the dose on the sixth cycle, she successfully became pregnant. On her second prenatal visit at 12 weeks gestation, an ovarian cyst was detected. Ultrasound showed a complex ovarian mass with nodules on the bowel and abdominal wall. There was mild-to-moderate peritoneal fluid. Cytology showed adenocarcinoma of ovarian origin. Further workup demonstrated advanced stage III epithelial ovarian cancer. JM was referred to GYN-oncology who felt pregnancy-sparing debulking was not an option. The oncologist recommended termination of pregnancy due to the risks of delaying chemotherapy. JM refused, citing her fertility difficulties in the past and her desire to carry the pregnancy to term "even if it kills me." She tells the oncologist she cannot bear the thought of terminating her pregnancy under any circumstances. The oncologist wants to comply with her wishes but feels the patient is making a choice that would result in harm to herself. The oncology team requests an ethics consult.

Production and evaluation of reagents for detection of Histoplasma capsulatum antigenuria by enzyme immunoassay.

The detection of urinary Histoplasma capsulatum polysaccharide antigen (HPA) by enzyme immunoassay (EIA) has proven useful for the presumptive diagnosis of histoplasmosis in AIDS patients. Assay limitations include (i) detection of a largely uncharacterized antigen and (ii) difficulty in reproducibly generating antibodies for use in the EIA. To improve antibody production for use in this test and to better understand the antigen being detected, we compared rabbit antibodies elicited using various immunization schedules, routes, and H. capsulatum-derived antigens. Antibodies were evaluated by EIA for their ability to detect purified H. capsulatum C antigen (C-Ag) and antigenuria. Reported as enzyme immunoassay (EI) units (the A(450) with antigen divided by the A(450) without antigen), results demonstrated that intravenous immunization of rabbits with whole, killed yeast-phase cells (yeast-i.v. regimen) produced antibodies giving the highest EI values in the C-Ag EIA (mean EI units +/- standard deviation, 14.9 +/- 0.6 versus 6.4 +/- 0.4 for rabbits immunized with C-Ag versus 2.4 +/- 0.3 for all other regimens combined). Yeast-i.v. antibodies were highly sensitive for the detection of antigenuria in patients with histoplasmosis, as shown by the following results: 12/12 patients compared to 10/12, 6/12, 3/12, and 3/12, respectively, for antibodies from rabbits immunized with (i) C-Ag; (ii) whole, killed yeast-phase cells administered subcutaneously and intramuscularly; (iii) yeast-phase culture filtrates; and (iv) HPA-positive urine. Rabbits immunized using the yeast-i.v. regimen also gave higher peak antibody titers than rabbits immunized by any other regimen (P < 0.03), and their antibodies were most comparable in reactivity to antibodies produced for use in the standard HPA-EIA test (P < 0.001). Therefore, rabbits immunized using the yeast-i.v. regimen produced the most sensitive antibodies with the highest titers for detection of C-Ag and antigenuria in histoplasmosis patients.