Expression of vascular endothelial growth factor receptor 3 and Tie1 tyrosine kinase receptor on acute leukemia cells

BACKGROUND: Recent data indicate a role for angiogenesis in hematologic malignancies. In addition to promoting new vessel growth in the bone marrow microenvironment, angiogenic factors are regulators of both hematopoietic and leukemic cells. Activation of vascular endothelial growth factor receptor 3 (VEGFR-3) and Tie1 tyrosine kinase receptor are known to promote leukemia cell survival. The details of this complex angiogenesis-related interaction are still uncertain. PROCEDURE: We studied bone marrow samples from 73 patients with acute lymphoblastic (ALL) or myelogenous (AML) leukemia by using immunological methods. RESULTS: Vascular endothelial growth factor receptor 3 expression was found in 15% of the samples, particularly in samples with pediatric lymphoblastic leukemias and monocytic AMLs. Tie1 protein expression was found in 11% of the samples, all of which were from adult AML patients. CONCLUSIONS: Our findings suggest that there are angiogenesis-related differences between pediatric and adult lymphoblastic leukemias as well as between lymphoid and myeloid leukemias.     

Neurofibromatosis type 2

Neurofibromatosis type 2 is an often devastating autosomal dominant disorder which, until relatively recently, was confused with its more common namesake neurofibromatosis type 1. Subjects who inherit a mutated allele of the NF2 gene inevitably develop schwannomas, affecting particularly the superior vestibular branch of the 8th cranial nerve, usually bilaterally. Meningiomas and other benign central nervous system tumours such as ependymomas are other common features. Much of the morbidity from these tumours results from their treatment. It is now possible to identify the NF2 mutation in most families, although about 20% of apparently sporadic cases are actually mosaic for their mutation. As a classical tumour suppressor, inactivation of the NF2 gene product, merlin/schwannomin, leads to the development of both NF2 associated and sporadic tumours. Merlin/schwannomin associates with proteins at the cell cytoskeleton near the plasma membrane and it inhibits cell proliferation, adhesion, and migration.     

Health-related quality of life among breast,prostate, and colorectal cancer patients with end-stage disease

Purpose

To explore end-stage breast, prostate, and colorectal cancer patients’ health-related quality of life (HRQoL); to compare results obtained by different HRQoL instruments; and to explore factors related to impaired HRQoL.

Methods

A cross-sectional observational study utilized two generic HRQoL instruments, the 15D and the EQ-5D, and a cancer-specific instrument, the EORTC QLQ-C30. Patients were recruited from the Helsinki University Hospital’s Department of Oncology and from a local hospice.

Results

Of the 114 palliative care patients included in the analysis, 27 had breast cancer, 30 had prostate cancer, and 57 had colorectal cancer. Of these, 28 % died within 3 months after their response, while 32 % died within three to 6 months, and 39 % died more than 6 months after. Utility values varied widely by instrument: the 15D gave the highest utility values and VAS the lowest (15D: 0.74, EQ-5D: 0.59 and VAS: 55). Patients close to death had lower HRQoL scores independently from the instrument used. The EQ-5D showed a pronounced ceiling effect, with 13 % of patients reporting full health, whereas the corresponding figures for the 15D and VAS were 1 and 0 %, respectively. Fatigue was the most common symptom and also predicted impaired HRQoL most significantly.

Conclusions

All instruments were applicable for the evaluation of HRQoL among end-stage cancer patients. Fatigue seemed to be the most significant deteriorating factor, whereas clinical and demographic factors had less of an effect on HRQoL.     

Parents are reluctant to use technological means of communication in pediatric day care

PURPOSE: We hypothesized that advanced information and communication technology (ICT) would be acceptable to parents in a pediatric surgical, and diagnostic imaging day care setting. METHODS: After Ethics Committee approval, we distributed surveys, over a one-month period, to parents of children arriving for day care surgery or diagnostic imaging. Parents indicated their acceptance of various proposed modes of postoperative discussion of healthcare i.e.; face-to-face, videophone, or telephone. Parents were also asked to describe their receptiveness to scheduling non-emergency hospital appointments online and to receiving electronic media describing their child's surgery and postoperative management. Parental education, income, and familiarity with the Internet were also assessed. RESULTS: A total of 451 surveys (84% response rate) were returned. Most parents (95%) had access to the Internet and 70% did their banking online. Forty-two percent of the parents had at least a university education and 63% had an annual family income > $50,000 Canadian. The majority of parents (98%) accepted face-to-face interaction, while only 35% and 37% of parents were receptive to videophone and telephone interviews, respectively. Computer availability (P = 0.001) and online banking (P = 0.011) were the only variables that predicted those parents who were in favour of using videophone technology. Parents were receptive to instruction electronic media (80%) and booking appointments online (61%). CONCLUSIONS: A well-educated and technologically sophisticated parent population does not favour advanced communication technologies over simple, face-to-face interaction in an in-hospital setting. These parents are prepared to receive technology-based information about their child's surgery and to schedule non-emergency hospital appointments online.     

Second-generation cephalomedullary nails in the treatment of reverse obliquity intertrochanteric fractures of the proximal femur

Since 1996, in Tampere University Hospital, a second-generation cephalomedullary nail (CMN) has been the implant of first choice in reverse obliquity fractures of the proximal femur. Between 1996 and 1999 we treated 77 such fractures, of which 72 were fixed with the CMN. There were six re-operations (8.3%). An anatomic or nearly anatomic reduction and a properly placed implant were found in 47 cases with one failure. An unacceptable postoperative radiological result was seen in 25 cases resulting in five re-operations (P=0.029). In 12 of 14 open procedures a cable was added to stabilise the greater trochanter and none failed. Four of five fractures fixed with the sliding hip screw failed. Our results using the CMN in reverse obliquity intertrochanteric fractures compares favourably to the results in earlier reports where extramedullary implants are used.     

Verification of adolescent self-reported smoking

Smoking and the validity of information obtained on it is often questioned in view of the widespread belief that adolescents tend to under- or over-report the habit. The aim here was to verify smoking habits as reported in a questionnaire given in conjunction with dental examinations by asking participants directly whether they smoked or not and performing biochemical measurements of thiocyanate in the saliva and carbon monoxide in the expired air. The series consisted of 150 pupils in the ninth grade (age 15 years). The reports in the questionnaires seemed to provide a reliable estimate of adolescent smoking, the sensitivity of the method being 81-96%, specificity 77-95%. Biochemical verification or control of smoking proved needless in normal dental practice. Accepting information offered by the patient provides a good starting point for health education and work motivating and supporting of self-directed breaking of the habit.