Ex vivo expansion and prophylactic infusion of CMV-pp65 peptide-specific cytotoxic T-lymphocytes following allogeneic hematopoietic stem cell transplantation

Cytomegalovirus reactivation and infection post-allogeneic hematopoietic stem cell transplant continue to cause morbidity and mortality. Current pharmacologic therapies are limited by side effects. Adoptive transfer of ex vivo generated cytomegalovirus-specific T cells has the potential to restore immunity, prevent cytomegalovirus, and circumvent the need for pharmacologic therapies. We have generated donor-derived cytomegalovirus-specific cytotoxic T cells using dendritic cells pulsed with the HLA-A2 restricted nonapeptide NLVPMVATV (NLV) derived from the cytomegalovirus-pp65 protein. These cytotoxic T cells have been given prophylactically to 9 recipients aged 4 to 65 years on or after day 28 post-allogeneic hematopoietic stem cell transplant. Only 2 of 9 recipients received T cell depletion in vivo or in vitro. There were no immediate adverse reactions to the infusions. During 97-798 days of follow-up, 2 recipients developed cytomegalovirus reactivation; neither developed cytomegalovirus disease or required pharmacotherapy. Three recipients developed acute graft versus host disease after infusion. Two recipients died, 1 from thrombotic thrombocytopenia purpura secondary to cyclosporine, 1 from complications of graft versus host disease. A transient increase in numbers of cytomegalovirus-specific T cells demonstrated by NLV-tetramer binding was seen in 6 recipients. Prophylactic adoptive transfer of NLV-specific T cells is safe and may be effective in preventing cytomegalovirus reactivation.

Health services reform and human resource management in Hong Kong public hospitals

This article discusses the empirical study of reform in the human resource management function in the Hong Kong Hospital Authority. It describes the prior management of the hospitals based on the civil service administration model before looking at management reform in general. From this research, the creative tensions between the centrifugal and centripetal forces in the pursuit of 'effectiveness', 'efficiency' and 'economy' are explored in terms of decentralization. A survey of line managers, in eleven Hospital Authority hospitals, revealed the progress of decentralization: a majority of respondents felt that, over the previous five years, managers at their level had been given greater responsibility for human resource management issues. In spite of the widespread perception of increased decentralization, however, it was recognized that there are limits to decentralization. It was the routine administration rather than the policy formulation and interpretation which had been decentralized, and hospitals continued to rely on the Hospital Authority Head of Office for guidance on policy interpretation. Several barriers to the effective decentralization of responsibility for human resource management were identified, including a lack of management skill, knowledge and time, the attitudes of some managers and the tight control of budget.