Selected biochemical parameters in plasma of blood and semen of Persian sturgeon,Acipenser persicus

The investigation of blood and seminal plasma biochemical parameters is essential for fish stock conservation and development of artificial propagation methods via extender improvement. In this research, comparison of blood and seminal plasma compounds and their relationship in Persian sturgeon, Acipenser persicus, were studied. Seminal plasma contained 59.53?±?2.56 mEq/l sodium (Na⁺), 4.72?±?0.31 mEq/l potassium (K⁺), 1.45?±?0.075 mEq/l chloride (Cl^?), 9.1?±?1.42 mEq/l calcium (Ca²⁺), 0.7?±?0.072 mEq/l magnesium (Mg²⁺), 0.11?±?0.021 g/dl total protein, 6.67?±?1.04 mg/dl cholesterol, 15.2?±?0.65 mg/dl triacylglycerol, and 18.22?±?4.16 mg/dl glucose. Also, blood biochemical values were determined (mean?±?SEM) for Na⁺ (123.2?±?1.31 mEq/l), K⁺ (2.77?±?0.088 mEq/l), Cl^? (97.18?±?1.23 mEq/l), Ca²⁺ (6.67?±?0.24 mEq/l), Mg²⁺ (1.29?±?0.074 mEq/l), glucose (198.49?±?18.03 mg/dl), triacylglycerol (214.22?±?13.38 mg/dl), total protein (3.62?±?0.23 g/dl), and cholesterol (127.11?±?6.94 mg/dl). The mean blood and seminal osmolality values were 244.62?±?3.66 and 86.9?±?4.22 mOsm/kg, respectively. Results of the comparison between biochemical parameters of seminal and blood plasma indicated that the concentrations of all parameters of blood plasma were significantly (P?++ and Na⁺ of the seminal plasma (P?P?相似文献   

An FBG magnetic sensor for oil flow monitoring in sandstone core

Monitoring the oil movement using a non-contact optical fiber probe during enhanced oil recovery is a novel technique to increase the efficiency of the process by distinguishing the oil position in the reservoir. A partially unclad fiber Bragg grating (FBG) coated with Fe₃O₄ nanoparticles as a magnetic field sensor is experimentally demonstrated. A series of six FBGs reflecting different wavelengths are fixed on the surface of sandstone. Nanofluids containing magnetite nanoparticles and alkaline-surfactant-polymer are injected continuously in two separate steps into the sandstone, which is saturated with 20% oil and 80% brine. The chamber is equipped with a solenoid that acts as a magnetic field generator. The changes in the magnetic field strength depended on the FBG-solenoid distance and the density of localized injected nanoparticles near the FBGs leads to a shift of the reflected wavelength of each single FBG accordingly. The shift is caused by the interference of different propagating modes reflected from the core-cladding and cladding-magnetite layer interfaces. The intensity of the FBG spectra decreases by injecting the nanofluid and vice versa for surfactant injection. The sensor response time of ∼21 s confirms the high reliability and repeatability of the sensing scheme. Movement of oil along the sandstone alters the wavelength shift in the FBG spectra.

Monitoring the oil movement using a non-contact optical fiber probe during enhanced oil recovery is a novel technique to increase the efficiency of the process by distinguishing the oil position in the reservoir.     

Interaction of opioid with insulin/IGFs signaling in Alzheimer's disease

Journal of Molecular Neuroscience - Alzheimer's disease is associated with biochemical and histopathological changes characterized by molecular abnormalities. Due to the lack of effective...     

Relationship between stuttering severity in children and their mothers speaking rate.

CONTEXT AND OBJECTIVE: Stuttering is a complex disease that influences occupational, social, academic and emotional achievements. The aim of this study was to correlate the stuttering severity index with speaking rates of mothers and children. DESIGN AND SETTING: Cross-sectional study, at the child rehabilitation clinics of Tehran city. METHODS: 35 pairs of mothers and their children who stuttered were studied. There were 29 boys and six girls, of mean age 8.5 years (range: 5.1-12.0). Speech samples from the mother-child pairs were audiotaped for approximately 15 minutes, until a reciprocal verbal interaction had been obtained. This sample was then analyzed in accordance with a stuttering severity index test and speaking rate parameters. RESULTS: The research results outlined a significant relationship between the mothers speaking rate and their childrens stuttering severity. CONCLUSION: The results suggest that the mothers speaking rate should be incorporated in the assessment and treatment of stuttering.     

Prevalence of hepatitis C virus infection and related risk factors among Iranian haemodialysis patients

Hepatitis C virus (HCV) infection is common among patients undergoing haemodialysis, and liver disease is an important cause of morbidity and mortality in this population. Management of HCV-related liver disease is a major health concern in patients with end-stage renal disease (ESRD) undergoing haemodialysis. To investigate the prevalence of HCV infection in patients on haemodialysis and its associated risk factors, we conducted a prospective case series study of 838 patients on haemodialysis in Tehran, Iran. Patients were selected randomly (cluster sampling) and all were screened for anti-HCV antibodies, using ELISA 3rd generation and confirmed by using RIBA 2nd generation. We found that 111 patients (13.2%) were infected. By applying univariate analysis, longer duration on haemodialysis (P = 0.000), more weekly dialysis sessions (P = 0.03), history of blood transfusion (P = 0.03) and history of previous renal transplantation (P = 0.01) were found to be associated with a higher rate of HCV infection. Multivariate analysis revealed that only length of time on dialysis (P = 0.000) and history of blood transfusion (P = 0.02) were significantly associated with HCV infection. The more the units transfused, the higher the rate of HCV infection. Our results suggest that early transplantation and avoidance of blood transfusion, as much as possible, are the two most important practical interventions to reduce the HCV exposure rate in our patients on haemodialysis.     

Identification of Potential Biomarkers in the Peripheral Blood Mononuclear Cells of Relapsing–Remitting Multiple Sclerosis Patients

Inflammation - Multiple sclerosis (MS) is described as an immune disorder with inflammation and neurodegeneration. Relapsing–remitting MS (RRMS) is one of the most...     

Epidemiology of paediatric burn injuries in Hamadan,Iran

Burn injuries are prevalent worldwide, especially in developing countries; and they are significant paediatric injuries in Iran. This study was performed to analyse the epidemiology and aetiology of paediatric burns in Hamadan province in the west part of Iran from March 2004 to March 2007. The incidence rate of child hospitalisation for burns was 33.4 per 100 000 person-years. The median age was 3 years with 69% of the patients under 4 years. The male-to-female ratio of incidence rate for all age groups was 1.52. Scald was the leading cause in almost all age groups and caused 266 (71.7%) burns. Correlation analysis showed that younger children are more vulnerable to scald injury. The mean body surface area (BSA) of burns was 16.36 (SD = 11.42) in all cases. Flame was more fatal than other causes of burns. The total fatality rate in this study was 3.5%. Epidemiological findings reveal that scald, age, gender and residence in rural area are the major issues that should be discussed in considering childhood burns. Prevention efforts should focus on the reduction of scald injuries during food preparation or hot liquid spillage. These efforts should target rural infants, toddlers and boys.     

Crimean-Congo hemorrhagic fever among health care workers in Iran: a seroprevalence study in two endemic regions

Crimean-Congo hemorrhagic fever (CCHF) has repeatedly caused nosocomial outbreaks among hospital staff. In the summer of 2003, we studied the seroprevalence of anti-CCHF IgG among health care workers who had come in contact with Crimean-Congo hemorrhagic fever patients from three referral hospitals in endemic regions of Iran. A total of 223 eligible staff were examined. Whereas 5 of 129 (3.87%) exposed health care workers tested positive, none of the 94 in the unexposed group did (P=0.075). Seropositivity was more frequent among those whose intact skin had come in contact with nonsanguineous body fluids (9.52%) and those who had had percutaneous contacts (7.14%). Health care workers exposed to Crimean-Congo hemorrhagic fever patients, those who live in Systan-Baluchestan province, and older health care workers were more prone to seropositivity. Where introduction of high-risk modes of contact cannot be confined, we propose that health care workers take all the protective measures when handling Crimean-Congo hemorrhagic fever patients, particularly their blood and other body fluids.     

Evaluation of the Outcome of Complete Sinus Excision with Reconstruction of the Umbilicus in Patients with Umbilical Pilonidal Sinus

Umbilical pilonidal sinus is a cause of umbilical discharge. In this study, the outcome of complete excision of the umbilical sinus with umbilical reconstruction is considered. Adult patients with umbilical pilonidal sinus who had not undergone any previous surgeries were operated on using a technique that involves complete excision of the sinus after eversion of the umbilicus followed by reconstruction of the umbilicus. Patients were then followed; and wound complications, recurrence, and patient satisfaction were evaluated at postoperative visits. A total of 45 patients underwent the operation; 39 (86.5%) were male, and 6 (13.5%) were female. The mean age was 22.6 years (18-27 years). Six male patients had synchronous sacrococcygeal pilonidal disease. The mean follow-up period was 34 months (3-62 months). Only four patients had wound drainage after operation, and all required drainage of the wound. No recurrence was observed during the follow-up period, and all patients were satisfied with the appearance of their umbilicus. The technique of complete sinus excision and umbilical reconstruction is an effective and acceptable method for treating umbilical pilonidal sinus and may be recommended for primary treatment of this disease.