Teijo Yrjönen

Learn More
  • T Yrjönen
  • 1999
In the literature, long-term prognosis of Legg-Calvé-Perthes disease (LCPD) means prognosis for secondary osteoarthritis of the hip joint or leg-length inequality and its consequences. Most studies show results after conservative treatment. The long-term natural history of LCPD is not known. In spite of deformity, most patients do well in early adulthood.(More)
Cytokines are messenger proteins that regulate the proliferation and differentiation of cells and control immune responses. Interferons, interleukins, and growth factors have applications in cancer, autoimmune, and viral disease treatment. The cytokines are susceptible to chemical and physical instability. This article reviews the structure and stability(More)
INTRODUCTION Rhazya stricta Decne. (Apocynaceae) is a medicinal plant rich in terpenoid indole alkaloids (TIAs), some of which possess important pharmacological properties. The study material including transgenic hairy root cultures have been developed and their potential for alkaloid production are being investigated. OBJECTIVE In this study, a(More)
Transgenic hairy roots of R. stricta were developed for investigation of alkaloid accumulations. The contents of five identified alkaloids, including serpentine as a new compound, increased compared to non-transformed roots. Rhazya stricta Decne. is a rich source of pharmacologically active terpenoid indole alkaloids (TIAs). In order to study TIA production(More)
Rhazya stricta Decne. (Apocynaceae) contains a large number of terpenoid indole alkaloids (TIAs). This study focused on the composition of alkaloids obtained from transformed hairy root cultures of R. stricta employing ultra-performance liquid chromatography-mass spectrometry (UPLC-MS). In the UPLC-MS analyses, a total of 20 TIAs were identified from crude(More)
A follow-up of 96 patients with Perthes' disease was made 28-47 years after onset of the disease. We paid special attention to leg-length inequality and its consequences and low-back disability. Leg-length inequality was a common finding, but low-back pain was not a significant problem. Leg-length inequality and lumbar scoliosis correlated poorly with(More)
A total of 126 Perthes diseases (112 patients) were studied. The treatment comprised intertrochanteric femoral varus osteotomy in every patient. In 20 patients (25 hips), the course of the disease was more severe than expected. The early radiological criteria for this severe course were: 1. Lateral calcification extending far laterally towards the greater(More)
The results in 96 patients (106 hips) with Perthes' disease who had had conservative noncontainment treatment were studied after 35 (28-47) years. At skeletal maturity, the radiographic result was poor in 65 hips. At the average age of 43 years, radiographic signs of arthrosis were found in 48 patients (51 hips); 5 patients had had hip replacement and 13(More)
The prognosis of Perthes' disease was studied after femoral intertrochanteric varus osteotomy in 112 patients (126 hips) and after conservative noncontainment treatment (Thomas splint) in 96 patients (106 hips). The radiographic results at or near skeletal maturity after containment treatment were good in 45%, fair in 21%, and poor in 34% of the hips. The(More)
We analyzed various prognostic factors in 112 children operated on for Perthes' disease (Catterall's groups II-IV); special attention was paid to acetabular changes and postoperative containment. The radiographic results of 126 intertrochanteric femoral varus osteotomies were analyzed 2-16 years postoperatively. Catterall's grouping or head-at-risk(More)