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Showing 21 results for Hip
Use of the anterior border of the human hip bones in sex determination
Sargolzaei Aval F, Naraghei Ma, Tofighei H, Sobhani A,
Volume 58, Issue 2 (5-2000)
Abstract
Sex determination is the first step in identification of dead body and hip bone or its components are reliable in sex discrimination. The present study was done to determine the applicability of some osteometric parameters of human hip bone in sex identification. Sixteen different variables for the anterior border of 50 human hip bones from a skeletal collection were studied. Statistically significant difference were detected between means in relation to sex for four variables, including: distance from the anterior superior iliac spine to the pubic tubercle, distance from the anterior inferior iliac spine to the iliopubic eminence, distance from the anterior inferior iliac spine to the pubic tubercle and length of the notch between the anterior inferior iliac spine and the iliopubic eminence. These variables could be used for sex determination of the unknown human hip bones.
Evaluation of using short barrel DHS in treatment of intertrochanteric fractures
Tahmasbi Mt, Sajjadi Saravi M, Alami Harandi B,
Volume 59, Issue 5 (9-2001)
Abstract
Cut out or extrusion of the lag screw from the superior aspect of head and neck of the femur is one of the most common and devastating complications of the surgery of the intertrochanteric fractures with DHS. The exact cause of this complications is unknown, but it seems to be related to osteopenia, inappropriate position of lag screw inside head of the femur and inability of DHS to slide inside the barrel, which is the most ignored risk factor. We used short barrel Dynamic Hip Screw (DHS) for fixation of the intertrochanteric fractures in Dimon and Hughston procedure in 16 patients with unstable fracture, from may to August 2000. The only patient suffered from cut out is the one with static position of DHS in the center of the head. The other complications were delayed ::::union:::: in one, disingagement of the lag screw and side plate despite using compression screw, and one case of significant limb length discrepancy 6 months after surgery, mild limbing was the rule and the average of harris scores was 76. We think that, it is possible to reduce the rate of cut out with choosing short barrel DHS instead of the standard one, while using short length lag screw.
Mechansim and outcome of hip fracture: a multi-center study
Karbakhshe M, Zargar M, Ershadi Z, Khaji A,
Volume 64, Issue 7 (8-2006)
Abstract
Background: We aimed to demonstrate the mechanism of fracture and functional outcome of patients with hip injury in our clinical setting.
Methods: In a historical cohort, all women 50 years of age and older admitted to three university hospitals of Tehran University of Medical Sciences (Shariati, Imam Khomeini and Sina) with the diagnosis of hip fracture from 21 March 2003 to 21 March 2004 were included in this study (n=115). Follow up was conducted via telephone post and even home visit to record the functional status of the patients at the time of study (5 Jan 2005) measured with Barthel index in addition to the exact mechanism of injuries.
Results: The mean and standard deviation of age were 76.3 ± 10.6 years. About 88.7% of injuries had occurred at home (65.2% on the carpet), the remaining happening in the streets. Mean length of hospitalization was 11 ± 7.9 days. Among our patients, 71% could mobilize spontaneously without aids before injuries. This had reduced to 20% at the time of follow-up. The mean Barthel index was 97.2 ± 8.2 before fracture and 75 ± 21.1 at the present. Among our patients, five cases died during hospitalization and 29 of them died afterwards (total: 34 or 29.6%).
Conclusion: The most common external cause of injuries in our cases was stumbling at home especially on carpeted surfaces. This necessitates preventive measures aimed at physical standards of houses and education of elderly on healthy locomotion, indoors.
The effect of co-administration of morphine and L-Arginine in hippocampal CA3 area on spatial learning and memory in male rats
Hoseinzadeh M, Pouraboli I, Abbasnejad M,
Volume 67, Issue 5 (8-2009)
Abstract
Background: Learning and memory are the complicated agents of central nervous system that various regions of brain can be involved in these phenomena, especially regions like hippocamp. Various agents like nitric oxide and morphine can influence learning and memory. About the effects of morphine with other components there was not clear reports so in this study the effect of co-administration of L-Arginine (precursor of nitric oxide) and morphine in hippocampal CA3 area on spatial learning and memory in male rats was investigated.
Methods: Male rats were deeply anaesthetized with ketamine and xylazine and cannula were implanted bilaterally in CA3 of hippocampus by using streotaxic technique, Then male rats were used in seven groups that received saline, L-Arginine (0/3M), L-Arginine (3μg/rat), L-NAME (0/3M), morphine (10mg/rat), L-Arginine (3μg/rat) with morphine or L-NAME with morphine for five days that they were trained in morris water maze to evaluate spatial learning and memory. There was a control group too.
Results: Our results showed that L-Arginine (3μg/rat) improved spatial learning and memory. L-NAME (inhibitor of nitric oxide) decreased spatial learning and memory in male rats. Injection of morphine also decreased spatial learning and memory in male rats. Co-administeration of L-NAME and morphine decreased learning more than morphine individually in male rats.
Conclusion: We concluded that precursor of nitric oxide improved learning and memory in male rats and inhibitor of it and morphine impaired this phenomena and coadministration of inhibitor of nitric oxide and morphine also impaired learning in rats.
The effects of aspirin on morphology and number of hippocampus pyramidal neurons: male rats in kindling model of epilepsy
Masoomeh Nazifi, Farah Farokhi,
Volume 67, Issue 12 (3-2010)
Abstract

Normal 0 false false false EN-US X-NONE AR-SA MicrosoftInternetExplorer4 Background: Neuronal injury in hippocampus is the most common pathological finding in temporal lobe epilepsy, accounting for approximately 70% of cases in patients with epilepsy. Neuroprotective effects of aspirin have been described in several neurodegenerative diseases. The aim of this study was to explore effects of aspirin on morphology and number of pyramidal neurons in CA1 and Dentate Gyrus area of hippocampus of rats in kindling model of epilepsy.
Methods: We divided the rats into t hree groups (n=8). Two groups received aspirin (30 mg/kg, p.o.) and saline, one week before and during induction of kindling. Kindling was induced in these groups by administration of pentylenetetrazole (PTZ: 40 mg/kg, ip). The third group received only saline throughout the study and served as health control group. After induction of kindling animals were sacrificed by perfusion with 10% saline solution under anesthesia. Histopathologic study of hippocampus were performed by light microscopy using H&E staining.
Results: A large number of injured pyramidal neurons with pyknotic nuclei and high eosinophilic cytoplasm are seen in CA1 and DG area of hippocampus of epileptic control group. Aspirin group had pyramidal neurons with clear nuclei and less density cytoplasm, similar to health control group (p<0.05). In kindled animals the number of intact pyramidal neurons in these two regions were significantly reduced and this effect was counteracted by aspirin (p<0.05).
Conclusions: Results of present study suggest that aspirin have neuroprotective effect against neuronal damage of hippocampus of kindled animals.


Surgical outcome of acetabular fracture using trochanteric flip osteotomy
Mortazavi Mj, Motamedi M, Niknam A, Mazoochy H, Espandar R,
Volume 69, Issue 10 (1-2012)
Abstract

Normal 0 false false false EN-US X-NONE AR-SA MicrosoftInternetExplorer4 Background: One of the difficulties in acetabulum surgery is appropriate exposure of the site of surgery. Trochanteric flip osteotomy is one of the surgical methods for superoposterior and posterior acetabulum exposure. However, due to possible complications some surgeons prefer to avoid this procedure. This study was undertaken to determine the outcome of surgical treatment of acetabular fracture using trochanteric flip osteotomy.
Methods : In this prospective cohort study, 14 patients with acetabular fracture who had been admitted in Imam Khomeini Hospital in Tehran, Iran, during 2003-2006 underwent trochanteric flip osteotomy. The patients were followed for at least one year post-surgically. Demographics, radiologic findings, intensity of pain using visual analogue scale (VAS), Harris hip score (HHS), force of hip abductors and complications were noted. Data analysis was performed using SPSS ver. 13.
Results : The mean HHS was 82.5 (55-95). Heterotopic ossification was observed in three patients. There were no cases of postoperative infection or non::::union::::. Only two patients showed displacement of osteotomized fragments. Reduction was anatomic in 10 patients. In one patient, the force of hip abductors was three-fifth. The mean hip pain was 3.4 based on VAS. There were no cases of femoral head osteonecrosis. With respect to HHS, the final hip status was excellent and good in four and six patients, respectively. Three patients had fair and only one patient had poor condition.
Conclusion: It seems that trochanteric flip osteotomy has much fewer complications in comparison to other methods justifying its use in such cases.


Biological plating in comminuted subtrochanteric fractures
Mehrpour Sr, Tavvafi Mr, Sorbi R, Aghamirsalim Mr,
Volume 70, Issue 2 (5-2012)
Abstract

Background: Comminuted subtrochanteric fractures have been a challenge for orthopedic surgeons in terms of appropriate reduction and stable fixation. Numerous methods have been used for the fixation of comminuted subtrochanteric fractures among which some are accompanied with technical difficulties and complications of their own. Regarding the results of previous studies, we decided to evaluate the biological fixation method in comminuted subtrochanteric fractures.

Methods: In this prospective study, we evaluated 20 men with comminuted subtrochanteric femoral fractures. The patients underwent indirect reduction with dynamic hip screw (DHS) or dynamic condylar screw (DCS) fixation within one week of injury. The patients were evaluated clinically for pain, hip and knee range of motion, leg-length discrepancy and angular and rotational deformities, in addition the radiographic assessment of the ::::union::::.

Results: According to Seinsheimer's classification of subtrochanteric fractures, four patients had type III, nine had type IV and seven had type V fractures. Fracture fixation was performed by DCS in eight and by DHS in 12 cases. The average time of the operations was 79.4 (ranging from 60-125) minutes. Mean blood loss was 634 (ranging from 340-1160) milliliters. Uneventfully, ::::union:::: occurred in all patients with no clinical pain or dysfunction.

Conclusion: Submuscular plating with either DCS or DHS is a viable option to treat comminuted subtrochanteric fractures. The results of this study highly suggest use of submuscular plating in the treatment of comminuted subtrochanteric fractures, especially in the third world countries.


Citation analysis and co-authorship of Iranian researchers in the field of immunology in ISI Web of Science: a brief report
Yousefi Ahmad, Hemmat Morteza, Gilvari Abbas, Shahmirzadi Tayebe,
Volume 70, Issue 3 (6-2012)
Abstract

Background: Currently, share of the scientific output, citation per paper, and co-authorship for articles indexed in databases such as ISI Web of Science, are very important criteria for the evaluation and ranking of countries, researchers, institutes, articles, disciplines and journals in the world. Therefore, the main objectives of the study were to determine co-authorship, the average citation per paper and the most prolific Iranian university or institution in the field of immunology.

Methods: For performing this scientometric study, we employed survey methods and citation analysis of the indexed papers in the ISI Web of Science from 1974 to 2010.

Results: A total of 1775 articles by Iranian authors in the field of immunology had been indexed in the database for the aforesaid period. Most collaborations and co-authorship of Iranian authors was with their counterparts from the USA. The average citation per paper in the field was 6.26 per paper. Tehran University of Medical Sciences had the highest number of articles in the database.

Conclusion: According to the results, Iranians collaborated with American peers more than any other nationality andthe average citation per paper in the field of immunology is higher than that of other fields in Iran but lower than the global average. Tehran University of Medical Sciences is the most prolific university in the field.


Radiographic changes of lumbar spine and pelvis in chronic spinal injury
Shamsa Shariatpanahi , Soheila Khodakarim , Fateme Abolpour Mofrad,
Volume 72, Issue 9 (12-2014)
Abstract
Background: Chronic spinal cord injury has an important role in sensorimotor disor-ders which is associated with many complications and the rate of these complications should be certainly considered. The most important complications are the changes in bones and joints which come with pain and lead to increase in their motor disability. In this paper, the radiographic images were studied and the ossifications of spinal cord and pelvis were described and also the type of changes and their prevalence was eval-uated. Methods: In this study, 500 patients and veterans with spinal cord injuries who were hospitalized in Khatam-Ol-Anbia Hospital were examined. The spinal and pelvis x-ray of the patients have been studied for spinal cord ossification, the hip joint narrowing, sacroiliitis, heterotopic ossification, osteophyte and the presence of quiver in the graph. Results: Among the patients, 485 cases were males and 15 cases were females, the av-erage age was 50.26 and the mean duration of injury was 26 years. Four hundred and forty six patients were paraplegic and 54 cases were quadriplegic. There was a signifi-cant relationship between age and the number of involved vertebrae (P= 0.000), psori-asis like ossifications (P= 0.048) and large osteophytes (P= 0.037), also between the du-ration of the injury and the hip joint narrowing (P= 0.008), the number of involved ver-tebrae (P= 0.008). In addition the presence of shrapnel in the graph is correlated with large osteophytes and more heterotopic ossification. Conclusion: The most frequent cause of chronic spinal injuries of our patients has been the injury by quiver, it seems our results may not be extended to all patients with spinal cord injury. In lumbar spine radiography of the patients, osteophytes, the quiver and psoriasis like ossifications were mostly seen. In the pelvis x-rays the most changes were hip joint narrowing, sacroiliitis and the heterotopic ossification.
Harris hip score assessment after total hip arthroplasty with short-stem versus standard-stem: randomized clinical trial
Darush Goran Savadkohi , Babak Siavashi , Mojgan Seifi , Tayeb Ramim ,
Volume 72, Issue 10 (1-2015)
Abstract
Background: Short-stem prosthesis for total hip arthroplasty (THA) have been designed to overcome the weakness of standard-stem prostheses and improve surgical outcomes. The aim of this study was to compare short-stem with standard-stem prosthesis outcomes. Methods: This study was performed as a randomized clinical trial. Subjects were selected among patients referred to Sina University Hospital, Tehran, Iran from April 2010 to 2012. THA were performed with short-stem or standard-stem prostheses after obtaining written informed consent from patients. Balanced block randomization method was used to get a random sample in each group. Clinical outcomes were evaluated based on Harris Hip Score (HHS). Patients were followed up for at least one year. All patients were examined at 2 weeks, 6 weeks, 3 months, 6 months and one year after surgery. In each visit, Control X-ray was obtained and bone and prosthetic position were assessed. Also, the symptoms such as infection, pain, claudication, ability to climb stairs, using crutches and weight bearing were rechecked. Student t-test was used to compare outcomes in the two groups. Results: A total of eighty four THA were studied. 13 patients were lost to follow-up or had infection and failure. One patient died with the prosthesis in situ from causes not related to the surgery. Therefore, a total of 70 patients were analyzed. Of these, 34 and 36 hips underwent small stem and standard stem THA, respectively. The mean age of the patients at the time of operation was 61.1±8.68 years (range, 48-86 years). Most common reasons for arthroplasty were osteoarthritis, avascular necrosis and dysplasia of hip. There were significant differences between the two study groups in bleeding during surgery (P=0.001). There were no significant differences among the study groups in HHS except for 6th week and 3th month (P=0.000). Conclusion: The use of short-stem prosthesis can improve the performance of patients in short-term but no significant difference with standard-stem prosthesis in long- term.
Comparison of neurodegeneration between right and left hippocampus area in rats
Arezo Nahavandi , Fatemeh Bakhtiarzadeh , Mansureh Soleimani ,
Volume 72, Issue 11 (2-2015)
Abstract
Background: Depression, as one of the most prevalent and disabling disorders in the world, has a complex and yet not well-known pathophysiology. Genetic, hormonal, neurotransmitter, inflammatory and neurodegenerative theories are all responsible. Studies show that depression leads to structural changes in the hippocampus, prefrontal cortex, amygdala, anterior cingulate, and basal bodies. Hippocampal volume loss is observed due to the death of nerve cells, neurons, and glial cells, and reduced neurogenesis. The hippocampus is a part of the limbic system. The limbic system is the area in the brain that is associated with memory, emotions, and motivation. The limbic system is located just above the brain stem and below the cortex. Despite the many studies related to the reduced hippocampal neurogenesis in depressed patients, no study has compared the amount of neurodegeneration between the left and right hippocampus. In this study, we compared neurodegeneration levels in the right and left hippocampus of the rats. Methods: Twenty male Sprague-Dawley rats that were purchased Razi Institute, Karaj, Iran, were evaluated in the study. This study was conducted in cellular and molecular center in Iran University of Medical Sciences, from June 2012 to June 2013. Half of them had unpredictable chronic mild stress (UCMS) for 21 days to develop depression. The forced-swimming test (FST) was used to measure the immobility time (IB), a symptom of depression. One week after the behavioral test, the rats were prepared for transcardial perfusion. Then, paraffin fixed brain was excised and the hippocampus was prepared for Nissl staining. All above-mentioned procedures were performed for the control group too except inducing UCMS. Results: Our results increased IB in the UCMS group, 68.8 second in stress group and 15.1 second in control group. Nissl staining showed prominent neural degeneration in the hippocampus of the rats in the UCMS group. Comparison of the left and right hippocampal cells revealed that the right hippocampus (mean= 49.166) was more vulnerable to stress than the left hippocampus (mean= 76.6). Conclusion: Our study showed different manifestations of depression after UCMS. It showed that UCMS could lead to mental depression. This study showed that the right hippocampus was more sensitive to stress than the left hippocampus. In fact, UCMS resulted in depression. The study showed that the right hippocampus was more sensitive to stress than the left hippocampus. Therefore, the main function of the right hemisphere, which is adaptation to the new environment, is disturbed more.
Effects of visual deprivation during brain development on expression of AMPA receptor subunits in rat’s hippocampus
Sayyed Alireza Talaei , Abolfazl Azami , Elham Mahdavi , Mahmoud Salami ,
Volume 73, Issue 3 (6-2015)
Abstract
Background: Environmental signals have an essential role in the maturation of neural circuits during critical period of brain development. It has been shown that, change in visual signals during critical period of brain development changes structure and function of glutamate receptors in the visual cortex. After processing in visual cortex, part of visual signals goes to the hippocampus and makes memories. The aim of this study was evaluating effects of visual deprivation during critical period of brain development on AMPA receptor subunits expression in rats’ hippocampus. Methods: This experimental study was done in Physiology Research Center, Kashan University of Medical Sciences at winter 2014 on male Wistar rats. Animals were divided to 2 groups (n= 36 for each) were kept in standard 12 hours light/12 hours dark condition (light reared, LR) or in complete darkness (dark reared, DR) from birth to the end of the experiments. Using reverse transcription polymerase chain reaction (RT-PCR) and Western blotting techniques respectively, expression of mRNA and protein of GluR1 and GluR2 subunits was evaluated in rats’ hippocampus at ages 2, 4 and 6 weeks in both groups. After quantification of the expressions, the data were compared by two way analysis of variance. Results: The relative expression of GluR1 subunit decreased about 24% (P=0.004) in the hippocampus of 6 WLR rats in comparison to 2 WLR ones. The relative expression of the other AMPA receptor subunit, GluR2, also increased about 190% in the hippocampus of the 6WLR animals when compared to the 2 WLR rats (P< 0.0001). Dark rearing increased the relative expression of both subunits of AMPA receptors, GluR1 and GluR2, about 20 percent (P= 0.01) in the hippocampus of 6 WDR rats in comparison to 2 WLR animals. Conclusion: Dark rearing of rats during critical period of brain development changes the relative expression and also arrangement of both AMPA receptor subunits, GluR1 and GluR2 in the hippocampus, age dependently.
The correlation of serum S100β protein levels and hippocampal Seladin-1 gene expression in a rat model of sporadic Alzheimer's disease
Soheila Hosseinzadeh , Maryam Zahmatkesh , Gholam-Reza Hassanzadeh Hassanzadeh , Morteza Karimian , Mansour Heidari , Mahmoud Karami ,
Volume 73, Issue 8 (11-2015)
Abstract

Background: Seladin-1 protein protects the neural cells against amyloid beta toxicity and its expression decreased in vulnerable regions of Alzheimer's disease (AD) brains. On the other hand, changes in serum levels of S100 have been considered as a marker of brain damage in neurodegenerative diseases. Furthermore, this study was carried out to determine the relation between the change profile of serum S100&beta protein levels and hippocampal Seladin-1 gene expression in a rat model of sporadic AD. Methods: In this experimental study that established in Department of Neuroscience, School of Advanced Technologies in Medicine, Tehran University of Medical Science, from March 2011 to April 2013, 72 animals were randomly divided into control, 4, 7, 14, and 21days ICV-STZ/Saline administrated rats. Alzheimer's model was induced by intracerebroventricular (ICV) injections of streptozotocin (STZ) [3 mg/kg] on days 1 and 3. Serum levels of S100&beta and hippocampal Seladin-1 gene expression were evalu-ated in experimental groups. The initial and step-through latencies (STL) were deter-mined using passive avoidance test. Results: Serum levels of S100&beta were significantly different between the STZ-7 day and STZ-14 day groups in comparison with the control, saline and STZ-4 day groups. As well as, there was a significant difference between the STZ-7 day group in comparison with the STZ-14 day and STZ-21 day groups (P=0.0001). Hippocampal Seladin-1 gene expression in STZ-14 day and STZ-21 day groups significantly decreased as compared to the control, saline and STZ-4 day groups (P=0.0001). However, significant correla-tion was detected between serum S100&beta protein decrement and Seladin-1 down regula-tion (P=0.001). Also, the STL was significantly decreased in 21 days ICV-STZ adminis-trated rats as compared to the control or saline groups (P=0.001). Conclusion: Monitoring the changes of serum S100&beta protein levels by relationship with changes in hippocampal Seladin-1 gene expression can be a useful indicator of neu-ronal damage in patients with Alzheimer's disease.


Prospective evaluation of clinical and radiographic outcomes of Pem-berton osteotomy in patients with developmental dysplasia of hip
Saeid Tabatabai , Abdossalam Razzaghi ,
Volume 74, Issue 5 (8-2016)
Abstract

Background: Acetabular dysplasia is a well-known cause of early osteoarthritis of hip which may appear at any time (perinatal, breast-feeding and childhood). The aim of this study was to evaluate the clinical and radiographic outcomes of children with de-velopmental dysplasia of hip (DDH) after undergoing open reduction, capsulorrhaphy and Pemberton osteotomy procedures.

Methods: This study prospectively conducted on 13 patients with DDH who attended to Razi Hospital at Ahvaz Jundishapur University of Medical Sciences at Ahvaz, Iran, from April 2012 to March 2015. Inclusion criteria were children with age range of 18 months to 8 years and acetabular index≥ 40 degree. Exclusion criteria were the age less than 18 months or above 8 years, connective tissue diseases, secondary dislocation due to previous infection, and acetabular dysplasia with specific syndrome. All patients were evaluated before surgery and at least one year after surgery in terms of clinical evaluations, dislocation or subluxation of hip, congruity of hip and radiological out-comes according to grading systems of McKay, Tonnis grading system, Severin classi-fication and acetabular index, respectively. All patients underwent open reduction, capsulorrhaphy, and Pemberton’s osteotomy in single-stage surgery and if necessary femoral shortening was performed.

Results: Ten patients (12 hips) were evaluated. Of those, 4 patients (40%) had right hip involvement. The mean age score was 38.92±12.37 months (range: 24-65 months). Acetabular index showed significant reduction after surgery in compare to before sur-gery (P= 0.002). According to Tonnis grading, 91.6% of cases were in I-II classes. Moreover, 66.6% of cases at clinical examinations of McKay criteria had excellent and good results after surgery. According to Severin radiographic findings criteria, 83.2% of cases were in I-III classes after surgery. There was statistically significant improvement in patients according to different grading systems.

Conclusion: In conclusion, Pemberton osteotomy could be an effective procedure and also in conjunction with other surgical procedures for the treatment of patients with DDH who presented in higher age and late.


A review on the animal models of seizure: review article
Maysam Havasimehr , Fatemeh Saffarzadeh , Ashkan Divanbeigi , Fariba Karimzadeh ,
Volume 76, Issue 2 (5-2018)
Abstract
Nowadays, there are various animal models of acute and chronic seizures. Some chemical and electrical models such as seizure induced by pentylenetetrazol injection and maximum electric shock has been developed over of six decades and different kinds of chemical, electrical and genetic models have been admitted up to now. Among chemical models of seizure induction penicillin, bicuculline, tetanus toxin, pentylenetetrazol, pilocarpine and kainic acid are the more common chemoconvulsants to induce acute and chronic seizures. Numerous mechanisms involved in different models lead to develop different types of seizures. This variety leads to be confused beginner researchers which model should be carried in a research hypothesis. This study was aimed to illustrate how choose the most proper animal model for a hypothesis as well as different animal models of seizure and epilepsy. Penicillin and bicuculine are most proper models to induce focal seizures. In addition, pilocarpine and kainic acid are able to develop temporal lobe seizures. Pentylenetetrazol and tetanus toxin could develop acute and chronic generalized and tonic-clonic seizures. Furthermore, maximum electric shock has been well known as a proper model for acute seizures induction. Electrical kindling of amygdala could develop repetitive temporal lobe seizures. Hypoxia model of seizure is more used for screening of anti-epileptic drugs, long-term consequences, and epileptogenesis mechanisms. Also, hyperthermic (febrile) models of seizure are reliable for studying epileptogenesis mechanisms and cognitive consequences. Genetic models such as recurrent simultaneous (such as GAERS, WAG/Rij) and reflex seizures (such as GEPR) are more valid in some studies, including absence and audiogenic seizures. WAG/Rij rats have been known as the most valid animal model for absence epilepsy. It should be noted that the animal model is a simple expression of a complex system and it covers only a part of what happens in humans’ body. The most important use of animal models of seizure is developing and finding more effective and new anti-epileptic drugs. Therefore, proper selection of the animal model between numerous animal models of seizure induction is crucial to design an equitable hypothesis. The evidences reviewed in this study made beginner researchers potent to choose the best model.

Translation, cultural adaptation, and reliability of Persian "Copenhagen hip and groin outcome score" in athletes with hip pain: brief report
Saeed Valian, Soofia Naghdi , Noureddin Nakhostin Ansari , Shohreh Jalaie , Nasser Salsabili,
Volume 76, Issue 11 (2-2019)
Abstract
Background: Copenhagen hip and groin outcome score (HAGOS) is the only valid and reliable self-reported questionnaire for assessing symptoms and activity limitations of subjects with hip and groin problems. The aim of this study was to translate and culturally adapt the English version of the HAGOS to Persian and to evaluate its reliability in young athletes with hip and groin pain.
Methods: This cross-sectional study was performed in Tehran University of Medical Sciences, School of Rehabilitation, Iran, from June 2014 to May 2015. In order to develop the Persian HAGOS, the English HAGOS was translated and culturally adapted into Persian language based on the standard forward-backward translation and expert committee review. Then, for the test-retest reliability investigation, young male athletes suffering from hip and groin pain, recruited from sport physical therapy clinics, completed the Persian HAGOS two times with 1-2 weeks interval. Independent samples t‐test and Intraclass correlation coefficient (ICC) was used to determine the test-retest reliability of the six subscales and the total score of Persian HAGOS. The SPSS statistical software (IBM SPSS, Armonk, NY, USA) was used for all analyses.
Results: Fifty young male athletes, mean age 26.12±3.37 years (range: 18-33), participated in this study. ICC value for test retest reliability of total score was 0.74 (95% CI: 0.59-0.84). ICC values for subscales scores ranged from 0.6 for participation in physical activities subscale to 0.79 (P<0.0001) for pain subscale (P<0.0001). There were no significant differences between the test and retest scores obtained for subscales and total scores (t-test, P>0.05).
Conclusion: The HAGOS was successfully translated and cross-culturally adapted from English into Persian language. The Persian version of HAGOS is a reliable questionnaire for the evaluation of young athletes with hip and groin pain in clinics and research.

Assessment of an educational program including formal lectures and practical sessions using simulators in anatomy of the pelvic floor in Tehran University of Medical Sciences
Fahimeh Ghotbizadeh Vahdani , Maryam Deldar Pasikhani , Tahmineh Ezazi , Zahra Panahi ,
Volume 77, Issue 3 (6-2019)
Abstract
Background: A professional vision at education is necessary, because of the increasing development of technical education in the field of medical education. In the conventional methods, although mastering in the field and being up-to-date is necessary, today, the faculty member must be able to design and implement a group of learning experiences for the students in order to learn and to conduct valid exams.
Methods: Our study was an interventional study, conducted on obstetrics and gynecology residents of the 3rd and 4th year at Tehran University of Medical Sciences in March, 2016. The number of participants was 66. The data collection was performed by a questionnaire. The included 19 questions about the anatomy of pelvic floor. At first, the questionnaires were administered to pre-test students to assess the amount of information before and then the theoretical and practical class about the anatomy of pelvic floor were held. At the end of classes, pre-test questionnaires were returned to residents. The responses to questions before and after the training were analyzed.
Results: Our study was conducted on 66 obstetrics and gynecology residents. Of the 66 subjects, 30 were in the pre-test and 66 were in the post-test. The mean score of residences in the anatomy of the pelvic floor before intervention was 5.388±7.14 and after intervention was 12.57±2.181 (P=0.001). The difference in mean before and after education was significant at all levels of study. The general knowledge scores in the post-test, was significantly (P<0.05) higher than pre-test.
Conclusion: According to our findings, it can be stated that the implementation of scholarship project regarding the knowledge of obstetrics and gynecology residences by the method of theoretical and anatomical teaching of anatomy of pelvic floor increases their knowledge, consequently, increase ability of surgical procedures of the residents and reduce complications. It is recommended that other education centers use a similar method to educate obstetrics and gynecology residents.

Sexual satisfaction and some related variables in married women
Abolfazl Ghoreishi, Mohamad Massod Vakili , Maryam Amirmohseni ,
Volume 77, Issue 10 (1-2020)
Abstract
Background: Sexual issues are one of the most important aspects of human life and sexual disorders are issues that can cause some problems in any society. Paying attention to sexual problems can help to deepen the couple's relationship by reducing potential problems. It is also important to note that communication problems between couples and their interplay patterns are effective in shaping sexual behavior between couples and can be a source of sexual behavior disorders for couples. The goal of this research was to determine prevalence of sexual satisfaction of participants and some related factors.
Methods: This descriptive-analytical study was conducted on 564 married women between the ages of 18 and 55 under the cover of Zanjan University of Medical Sciences (ZUMJ), Zanjan City, Iran, among whom referring to ZUMJ educational centers from March to August 2012. A simple random sampling method was used. The data collection tool was a 14-item changes in sexual functioning questionnaire (CSFQ-14) completed by the self-efficacy method.
Results: The results of this study showed that 79.5% of women studied had some degree of sexual dissatisfaction. The study showed that with increasing age, the degree of dissatisfaction with marital relationships increased from 3.1% in the age group of 14-19 years to 38.2% in the age group of 30-39 years. Also, the rate of sexual dissatisfaction increased with the increase in education, and the highest degree of dissatisfaction was in the group with diploma education and the next stage, those with university education. The results of the study reported the highest proportion of dissatisfaction with sexual relations in the housewife group, and dissatisfaction with sexual relations increased significantly with an increasing number of years of marital life.
Conclusion: According to the results of this study, the prevalence of dissatisfaction especially with respect to sexual orientation among women is higher than expected, which is a threat to the individual and social health of individuals.

The effect of hip joint position on knee joint isokinetic dynamometry indices in football and track and field athletes
Mandana Rezaei, Nader Sadri-Aghdam , Mahmood Reza Azghani, Fariba Ghaderi, Hakimeh Adigozali,
Volume 80, Issue 8 (11-2022)
Abstract
Background: Isokinetic dynamometry is a golden standard test to estimate lower extremity sport related injuries in the athlete assessment. Dynamometry is also commonly used to design preventive protocols. The aim of this study was to explore the effects of hip joint positioning in seated and lying positions on knee joint dynamometry indices, including extensor and flexor peak torques in football and track and field athletes.
Methods: Forty four male athletes (including 22 football players and 22 track and field athletes) have participated in this descriptive-analytic study. The sampling method was simple nonrandom sampling. This study was conducted in the Biomechanics laboratory of the Rehabilitation Sciences, Faculty of Tabriz University of Medical Sciences since October 2019 to October 2020. Knee joint dynamometry indices were consisted of concentric and eccentric flexor and extensor peak torques at 60 degrees per second velocity. Optimum length, angle of crossover, and the muscle balance ratios (concentric extensor peak torque/concentric flexor peak torque and eccentric extensor peak torque/concentric flexor peak torque) were also evaluated. All assessments were performed in both seated and lying positions. The indices were compared between football players and track and field athletes.
Results: The interaction effect of group and hip joint was not significant (P<0.05). Further, concentric and eccentric flexor and extensor peak torques and conventional flexor to extensor ratio were higher meaningfully in the seated position compared to the lying (P<0.05). Optimum length was significantly higher in the lying position, but the angle of crossover was higher in the seated position (P<0.05). The hip joint position was not effective on the functional flexor to extensor ratio (P>0.05). Also, dynamometry indices were not different between football and track and field groups (P<0.05).
Conclusion: Findings revealed the effects of hip joint position on strength measurements in football and track and field athletes. This factor should be considered to design strengthening exercises for athletes and also to estimate the sport injury risk.

Atrophy of hippocampal subfields as a diagnostic biomarker in alzheimer's disease patients and its differentiation from mild cognitive impairment disorders
Yunus Soleymani, Amir Reza Jahanshahi, Davood Khezerloo ,
Volume 80, Issue 11 (2-2023)
Abstract
Background: Atrophy of hippocampal subfields is one of the diagnostic biomarkers of Alzheimer's disease, which has also been observed in many patients with mild cognitive impairment. There is still no clear understanding of the atrophy pattern of hippocampal subfields in Alzheimer's disease and its differentiation from mild cognitive impairment. In this cross-sectional study, hippocampal subfield atrophy in Alzheimer's patients were compared with patients with early (EMCI) and late (LMCI) cognitive impairment and the control group.
Methods: This was a cross-sectional study conducted from September 2021 to September 2022 in the radiology department of Tabriz Paramedical Faculty. MRI images of Alzheimer's patients, EMCI patients, LMCI patients, and normal controls (NCs) were obtained from the ADNI database. Different hippocampus subfields of hippocampal fissure, dentate gyrus head, dentate gyrus body, first cornu ammonis body, cornu ammonis head, subiculum body, and subiculum head were isolated using the hippocampus segmentation tool in FreeSurfer 7.0 software. The volume of all subfields was calculated bilaterally and normalized. The volume difference of each hippocampus subfield between the groups participating in the study and the pair volume difference between the groups was analyzed using the Kruskal-Wallis H Test and post-hoc Dunn's test. The P<0.05 was considered as the significance level.
Results: The most significant volume difference between the four groups participating in the study was related to the whole hippocampus, DG body, subiculum body, and subiculum head subfields (P<0.0001). Also, when examining pairs, the most significant difference was observed between the NC/AD pair (P<0.0001) and the least significant difference between the pair of LMCI/AD group (P<0.05) and in the subfield subiculum body showing the progressive course of hippocampal subfield atrophy with cognitive progress towards Alzheimer's disease.
Conclusion: In most subfields of the hippocampus, a significant difference in atrophy can be seen, increasing the severity of atrophy as the disorder progresses toward Alzheimer's. Such findings can help guide future studies to improve diagnostic performance to identify individuals at high risk of Alzheimer's disease.

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