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T Sloan

Publications and source records attributed to T Sloan.

22 records · Page 2Linked to original sources
PubMed1991

Identification of phosphorylcholine containing antigens of Fasciola hepatica--successful tolerization against this epitope in experimental animals.

Phosphorylcholine containing antigens have been identified in the parasite Fasciola hepatica by immunoblotting and ELISA. Immunoblots probed with polyclonal and monoclonal antibodies indicate that the majority of antigens identified in both the immature and mature parasite contain both phosphorylcholine and non-phosphorylcholine epitopes. One antigen of 58 kDa appears to contain predominantly PC epitopes or at least this epitope is the major one responded to by host animals. Successful immunotolerization against the epitope PC was achieved by injecting the PC conjugate, ovalbumin PC, into neonatal rats. Immunotolerization against PC resulted in a 25% reduction in worm burden upon subsequent infection with Fasciola hepatica.

Animals↗
PubMed1986

Somatosensory evoked potential quantification of ulnar nerve blockade.

We investigated the appropriateness of the somatosensory evoked potentials (SSEPs) as an objective monitor of sensory blockade of the ulnar nerve by comparing the effects of saline and lidocaine infiltration of the ulnar nerve at the elbow, with and without epinephrine. The four treatments were administered in random order to each of eight volunteers who were asked to assess the intensity of sensory blockade on a 10-cm visual analogue scale (SVAS). Concomitantly, ulnar nerve SSEPs were recorded at the Erb's point, over the posterior spine at or rostral to C-7, and over the sensory cortex. All 16 of the saline and saline with epinephrine infiltrations resulted in SVAS scores of 1 or less. In contrast, all the lidocaine and lidocaine with epinephrine injections were associated with SVAS scores in excess of 8. With lidocaine this lasted 83 +/- 22 min, and the duration of lidocaine with epinephrine was 248 +/- 82 min. SSEP responses were considered abnormal when there were 15 min or more of a decrease in amplitude by 50% or more and an increase in latency by 15% or more. After plain lidocaine injection, all the amplitude measurements showed depression over 50%, with the exception of cortical measurements in one subject. Similarly, there were increased latencies at Erb's point and C-7 with lidocaine blocks. In contrast, change in cortical latency was seldom seen. Variable selection by multiple linear regression analysis of the six SSEP measurements gave a statistical model that sensory block duration (SVAS greater than or equal to 8) could be specified by the duration of the reduced C-7 amplitude (r = 0.96).(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗