[Investigation of a medicinal and ornamental plant propagation, the cereus peruvianus mill, and using tissue culture technique]

The extracted juice and alkaloeids of the medicinal and ornamental cactus Cereus peruvianus are contain a lot of effective compounds which widely use in medicine and agricultural industries. Propagation of this plant using conventional method [seed, cutting, offset] is very slow and its mass production is possible by tissue culture technique. The aim of this study was the micropropagation possibility and recognition of some of its different aspects, and determination of suitable medium and hormonal composition at in-vitro conditions of cereus. The experimental design was compeletly randomized with 3 replication and each replicate was contained 5 sample. After surface disinfection the explants were cultured on MS basal medium containing%3 sucrose,8 g/1 phytoagar and different treatment of plant growth regulators [IBA, NAA, Kinetin, BAP, 2,4-D, GA3, TDZ] and pH=5/8. After 45 days, some parameters such as effectivness of culture media in percent of regeneration from areole, production of friable callus and rooting in all treatments were recorded. In this research The best growth of friable callus was obtained in MS medium supplemented with 0.07mg/l TDZ and 0.05 mg/1 NAA and 4mg/l 2,4-D with 6mg/l kinetin for regeneration of areole and 4mg/l 2,4-D and 4mg/l kinetin for rooting was the most favorable medium.High regeneration potential was observed after 2.5-3 months of culture. Eight different media was selected for plantlet regeneration.There is a significant difference between regeneration of areole in cereus peruvianus var monstrosus and cereus peruvianus var tortuosus. As for to the importance of the extracted juice and alkaloeids of the cactus Cereus peruvianus Propagation of this plant using by conventional method is very slow and propagation it of areol in addition to economical is very fast

Clinical evaluation of lsodon and NaF on tooth hypersemitivity after initial periodontal therapy

Dentin hypersensitivity is a frequently problem after periodontal therapy. Many substances have been advocated for the treatment of this problem and numerous clinical studies investigated their efficacy. The aim of this clinical trial was to study the effectiveness of potassium nitrate and sodium fluoride gels for the reduction of tooth sensitivity following initial phase of periodontal therapy. In sixteen subjects following initial phase of periodontal therapy 274 sensitive teeth were detected. R and omly in one quadrant Isodan and in other quadrant sodium fluoride was applied and in the other applied no material. After one and two weeks plaque index and pain score were assessed in each group. The data obtained were analyzed by means of chi - square and Mann - whitney test. There were significant difference between the two groups [Isodan and NaF] and control group at the first week and immediately after scaling in reducing dentin hypersensitivity whereas no significant difference was found between Isodan and NaF in the whole. At the second week and immediately after scaling, there was a significant difference between Isodan and the control group [P<0.05], but there was no significant difference between NaF and the control group. Reduction of plaque index was significant in all groups between the first and the second week but there was no significant difference between groups. This study showed that both gels appear to have therapeutic effects to reduce hypersensitivity however Isodan has more prolonged effect. Also proper plaque control reduced tooth hypersensitivity

Report of a case with malaria vivax and borrelia co-infection

A 29-year-old man presented with abrupt onset of fever and shaking chills. Thick and thin smears of patient's peripheral blood showed different stages of P.vivax; but with regard to the atypical pattern of fever and obvious signs of meningeal irritation further study was performed and mixed infection with Borrelia spirochetes was discovered