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Biomedical subjects

Reza Ghasemian

Publications and source records attributed to Reza Ghasemian.

3 recordsLinked to original sources

Acute segmental testicular infarction.

We report a case of segmental testicular infarction occurring in a patient with sickle cell trait. A 20-year-old African American man presented with a complaint of sudden onset, acute severe left testicular pain for 24 hours. Scrotal ultrasound revealed a hypo-echoic mass in the left testicle. The hypo-echoic area demonstrated no blood flow in Doppler mode. Because malignancy could not be excluded, the patient underwent a standard inguinal testicular exploration. A partial orchiectomy was performed with complete excision of the lesion. Pathology revealed infarcted testicular tissue with no malignancy present. Further evaluation revealed that the patient had sickle cell trait unbeknownst to him.

Acute Disease↗

Daclizumab induction/tacrolimus sparing: a randomized prospective trial in renal transplantation.

Tacrolimus inhibits lymphocyte responses by blocking calcium-dependent signalling pathways important in IL-2 generation. Daclizumab, a humanized monoclonal antibody, binds with high affinity to the Tac subunit of the IL-2 receptor complex. We reasoned therefore that the absence of IL-2R should permit lower doses of tacrolimus and thereby less toxicity. Twenty-eight patients were randomized and followed for 6 months: Group 1, high dose (HD) tacrolimus (trough 12-17 ng/mL; n = 13); Group 2, low dose (LD) tacrolimus (trough 5-10 ng/mL; n = 15). All patients received daclizumab induction (2 mg/kg) on days 0 and 14, mycophenolate mofetil (2 g/d except for one patient who received 1 g) and rapid prednisone taper. Serious infections were minimal in both groups. Hospitalizations, for various reasons, were HD (n = 12) and LD (n = 6). All patients and grafts survived for the 6-month study period. There was one rejection episode in a non-compliant patient at 101 d. LD tacrolimus appears equally effective as HD tacrolimus in preventing rejection episodes and may be associated with fewer adverse events.

Antibodies, Monoclonal↗