Evaluation of Histologic Changes of Facet Joint Cartilage and Nerve at the Sheep Postradiofrequency 60 and 120 Seconds After Exposure for Immediate, Three and Six Weeks

Introduction. Facet joint, also known as zygapophyseal joint, is considered as an important structure to play role as one of source of pain in the back that had been recognized since fifth decade ago. Radio frequency is one of treatment modality based on minimal invasive technique for back pain due to pathology of facet joint. Unfortunately, radiofrequency does not give permanent result, so it must be repeated in certain time. The radiofrequency works by producing heat thus it denervates nerve at facet joint. This heat can also destroy surrounding tissues, such as cartilage of facet joint that will further lead to source of back pain. The purpose of this research to evaluate and compare histology changes of facet joint nerve and cartilage of sheep that performed radiofrequency for different time and exposure. Material and methods. This is an experimental study that uses six sheeps as animal trial test. Radiofrequency was applied for 60 and 120 seconds for immediate, three and six weeks. Towards euthanasia, these sheep were given good care and observed for the effect of radiofrequency. After six weeks, these sheep were performed euthanasia then was evaluated histologically using neuropathology score for the nerve and modified-mankins score for the cartilage. Results. This experimental study showed that neuropathology score differed significantly between groups but for modified-mankin score, no difference was found. Besides, there is no negative effect of radiofrequency to six sheeps such as infection and paralysis of extremity. Conclusions. Radiofrequency does not give rise in infection, paralysis of extremity and death either for exposure 60 and 120 seconds clinically. Radiofrequency does not influence facet joint cartilage, only nerve histologically

A case of adult acute T-cell lymphoblastic leukemia presented with hemophagocytic syndrome

[No abstract available

Mapping the potential distribution of Rhododendron arboreum Sm. ssp. nilagiricum (Zenker) Tagg (Ericaceae), an endemic plant using ecological modeling

International audienceRhododendron arboreum Sm. ssp. nilagiricum (Zenker) Tagg, a tree species endemic to the southern Western Ghats of peninsular India, is restricted to a narrow topographic and bioclimatic niche. Since information on ecological and geographic extent of the species is lacking, we used Genetic Algorithm for Rule-set Prediction (GARP), an ecological niche modelling (ENM) method to model its spatial distribution. The model is developed based on its occurrence in the Western Ghats, in relation to topographic and environmental variables. Prediction of R. arboreum ssp. nilagiricum in the Western Ghats is strongly related to local climatic conditions in terms of annual temperature, precipitation and diurnal temperature ranges and not so much dependent on altitudinal variations. The numerous bioclimatic, topographic and anthropogenic factors have led to the formation of islands of species distribution, restricted to the Nilgiri, Anamalai, Palni and Meghamalai hills of the Western Ghats. Predictions allow identification of key areas for in situ conservation of the species and prioritize areas falling in the ecological extent of the species for conservation

Mapping the potential distribution of Rhododendron arboreum Sm. ssp. nilagiricum (Zenker) Tagg (Ericaceae), an endemic plant using ecological modeling

International audienceRhododendron arboreum Sm. ssp. nilagiricum (Zenker) Tagg, a tree species endemic to the southern Western Ghats of peninsular India, is restricted to a narrow topographic and bioclimatic niche. Since information on ecological and geographic extent of the species is lacking, we used Genetic Algorithm for Rule-set Prediction (GARP), an ecological niche modelling (ENM) method to model its spatial distribution. The model is developed based on its occurrence in the Western Ghats, in relation to topographic and environmental variables. Prediction of R. arboreum ssp. nilagiricum in the Western Ghats is strongly related to local climatic conditions in terms of annual temperature, precipitation and diurnal temperature ranges and not so much dependent on altitudinal variations. The numerous bioclimatic, topographic and anthropogenic factors have led to the formation of islands of species distribution, restricted to the Nilgiri, Anamalai, Palni and Meghamalai hills of the Western Ghats. Predictions allow identification of key areas for in situ conservation of the species and prioritize areas falling in the ecological extent of the species for conservation