The acute-phase protein serum amyloid A3 is expressed in the bovine mammary gland and plays a role in host defence

The serum amyloid A protein is one of the major reactants in the acute-phase response. Using representational difference analysis comparing RNA from normal and involuting quarters of a dairy cow mammary gland, we found an mRNA encoding the SAA3 protein (M-SAA3). The M-SAA3 mRNA was localized to restricted populations of bovine mammary epithelial cells (MECs). It was expressed at a moderate level in late pregnancy, at a low level through lactation, was induced early in milk stasis, and expressed at high levels in most MECs during mid to late involution and inflammation/mastitis. The mature M-SAA3 peptide was expressed in Escherichia coli, antibodies made, and shown to have antibacterial activity against E. coli, Streptococcus uberis and Pseudomonas aeruginosa. These results suggest that the mammary SAA3 may have a role in protection of the mammary gland during remodelling and infection and possibly in the neonate gastrointestinal tract.

Impaired awareness and employment outcome after traumatic brain injury

Inaccurate self-awareness is a common finding after traumatic brain injury. Such impaired awareness has been hypothesized to limit patients' eventual functional outcomes by decreasing motivation for treatment and resulting in selection of inappropriate long-term goals. Previous investigations of the association between impaired awareness and employment outcome have produced inconsistent results. The present article reviews these studies and presents the results of our new investigation of this issue. In addition, we studied the comparability of two methods of measuring impaired awareness. Results provided strong support for a positive relationship between accurate self-awareness and favorable employment outcome at follow-up.

Rehabilitation of the post-cardiac surgery stroke patient: analysis of cognitive and functional assessment

OBJECTIVE

Determine whether, as expected, patients sustaining post-cardiac surgery stroke (PCS) (n = 19) differ from other stroke (OS) patients (n = 216).

DESIGN

A total of 235 stroke patients were surveyed. Therapist ratings of Functional Independence Measure (FIM) on admission to and discharge from a rehabilitation unit were compared. Cooperation with formal neuropsychologic evaluation was assessed.

SETTING

The rehabilitation unit of a tertiary care hospital.

PARTICIPANTS

Medical records for consecutive stroke patients were reviewed (January 1994 to December 1995). Groups did not differ in age, gender, or admission FIM.

INTERVENTIONS

Standardized neuropsychologic evaluation of seven cognitive domains was attempted for each patient referred to the neuropsychology service. All of the patients received FIM ratings on admission to and discharge from the rehabilitation unit.

OUTCOME MEASURES

Gain in FIM per week of rehabilitation unit stay (FIM efficiency) and discharge destination.

RESULTS

Contrary to expectations, PCS patients did not differ significantly from OS patients in FIM efficiency or discharge destination. However, PCS patients were significantly less able to cooperate with formal neuropsychologic testing, possibly secondary to their physical condition, higher-level cognitive deficits, or both.

CONCLUSION

Although PCS patients may sustain medical and cognitive deficits that interfere with exhaustive neuropsychologic evaluation, these deficits do not significantly interfere with functional progress in rehabilitation and should not make PCS patients ineligible for rehabilitation services.