Jordan University of Science and Technology

About: Jordan University of Science and Technology is a education organization based out in Irbid, Irbid, Jordan. It is known for research contribution in the topics: Population & Health care. The organization has 7582 authors who have published 13166 publications receiving 298158 citations. The organization is also known as: JUST.

Effect of preservation of the inferior and posterior borders on recurrence of ameloblastomas of the mandible.

Abstract: Objective: The purpose of this study was to evaluate the experience and results of using a rational radical conservative approach in the surgical treatment of mandibular ameloblastomas. Study Design: A retrospective analysis of every patient with an ameloblastoma of the mandible treated in the Department of Oral Medicine and Oral Surgery at the Jordan University of Science and Technology between 1989 and 1999 was conducted. All were operated on by the author, who used a uniform surgical protocol in every case. All soft tissues in contact or overlying the lesion and a wide margin of cancellous bone related to the tumor were destroyed. The compact bone comprising the lower border of the mandible and the posterior border of the ascending ramus together with the nutrient periosteum attached to them were preserved, thus maintaining the continuity of the mandible and the facial contours. When teeth, soft tissues, or both were involved, they were destroyed. All patients were reviewed annually for a follow-up period of 3 to 10 years (mean, 6.5 years) by the same clinician. Results: All ameloblastomas were located in the mandible; 21 were in the angle/molar region and the ascending ramus, and 2 cases were in the anterior region. There was no clinical or radiographic evidence of recurrence observed during the follow-up period. Conclusion: Ameloblastoma has a high rate of local recurrence if it is not adequately removed. The findings of this study to date suggest that the technique of rational radical conservative resection may have a place in the treatment of ameloblastoma of the mandible and is worthy of further trial. (Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2000;90:155-63)

Differential Expression of Molecular Markers of Synaptic Plasticity in the Hippocampus, Prefrontal Cortex, and Amygdala in Response to Spatial Learning, Predator Exposure, and Stress‐Induced Amnesia

Abstract: We have studied the effects of spatial learning and predator stress-induced amnesia on the expression of calcium/calmodulin-dependent protein kinase II (CaMKII), brain-derived neurotrophic factor (BDNF) and calcineurin in the hippocampus, basolateral amygdala (BLA), and medial prefrontal cortex (mPFC). Adult male rats were given a single training session in the radial-arm water maze (RAWM) composed of 12 trials followed by a 30-min delay period, during which rats were either returned to their home cages or given inescapable exposure to a cat. Immediately following the 30-min delay period, the rats were given a single test trial in the RAWM to assess their memory for the hidden platform location. Under control (no stress) conditions, rats exhibited intact spatial memory and an increase in phosphorylated CaMKII (p-CaMKII), total CaMKII, and BDNF in dorsal CA1. Under stress conditions, rats exhibited impaired spatial memory and a suppression of all measured markers of molecular plasticity in dorsal CA1. The molecular profiles observed in the BLA, mPFC, and ventral CA1 were markedly different from those observed in dorsal CA1. Stress exposure increased p-CaMKII in the BLA, decreased p-CaMKII in the mPFC, and had no effect on any of the markers of molecular plasticity in ventral CA1. These findings provide novel observations regarding rapidly induced changes in the expression of molecular plasticity in response to spatial learning, predator exposure, and stress-induced amnesia in brainregions involved in different aspects of memory processing.

Association between periodontal disease and osteoporosis in postmenopausal women in jordan.

Abstract: Background: Some studies suggest that females with osteoporosis are at an increased risk of periodontal attachment loss and tooth loss; however, results have varied. The aim of this study is to determine the relationship between periodontitis and osteoporosis among postmenopausal Jordanian women.

Clinical and sociodemographic features of acute carbamate and organophosphate poisoning: a study of 70 adult patients in north Jordan

Abstract: OBJECTIVE: To define the sociodemographic and clinical aspects of organic phosphate and carbamate poisoning. DESIGN: The records of 70 adults (33 males and 37 females) with carbamate or organophosphate intoxication admitted to a North Jordan Teaching Hospital over a five-year period were reviewed retrospectively. These patients represented 10% of all drug overdoses admitted over the same period. RESULTS: The most cases occurred in the 15-19 year-old age group and the female to male ratio was 1.1:1. Carbamate intoxication was more than twice as common as organophosphate intoxication. Two thirds (64%) of the patients intended to commit suicide, 26% were due to accidental ingestion and the remaining 10% were from occupational exposure. Muscarinic manifestations were the predominant clinical feature followed by central nervous system and then nicotinic manifestations. Low grade fever, not related to infection, was observed in 49% of the patients and respiratory difficulty in 47%, of which 11% required assisted ventilation. Twenty-nine percent of the patients presented with coma. Three patients died for a hospital mortality of 4%. CONCLUSIONS: The widespread use of carbamates and organophosphates as household pesticides and the lack of adequate regulations controlling their sale and application has encouraged teenagers to prefer them as a modality of attempted suicide. This source of poisoning has become a major health problem in some developing countries. Language: en