mohammad reza mokhber dezfouli

Infectious diarrhea in young goats is one of the most common and serious threats to the animals' health, influencing the profitability of the goat industry. Considering the need to investigate the factors involved in the occurrence of neonatal diseases, especially diarrhea, to improve livestock health and increase productivity, especially in Iran, the present study was conducted with the aim of investigating the bacterial agents involved in the diarrhea of Alpine and Saanen kids.

Between 1421 goats (714 Saanen and 704 Alpine) under the supervision, 254 goats (17.8%) of different ages died due to diarrhea sign. Samples from the liver, heart, and lungs were taken during the necropsy process, and bacteriological examinations were performed.

Forty-four kids died of non-infectious cause. Diarrhea caused by bacterial agents (10.9%) was much more than non-infectious agents (3.1%). Significantly more so than at other ages, the bacterial agent was isolated from the age of less than 2 months. Isolated bacterial agents included Escherichia coli, Staphylococcus aureus (12.3%), Pseudomonas (7.1%), Bacillus (11%) and Klebsiella (2.6%). E. coli was isolated frequently (63.2%) , and mostly at the age of less than 2 months. The highest rate of isolation of bacterial agents was from the heart, especially E. coli.

The findings of the current research showed that in Saanen and Alpine goats reared in intensive rearing systems, E. coli bacteria has a high contribution to the occurrence of digestive problems and diarrhea, which can be avoided by controlling environmental health, improvement and preventing the density of parturitions in a short time.

Understanding anatomical structures from the past to the present has been one of the guidelines for advancing medical and veterinary science worldwide. The lack of comprehensive information on the anatomy of the paranasal sinuses and the Shal sheep nasal cavity (Ovis aries) encouraged us to write this article. Computed tomography (CT) scan is a method that shows different parts of the body without superimposition of adjacent structures. Radiographic imaging also gives very high-resolution images of bones to examine bone structures. Paranasal sinuses of Shal sheep were composed of frontal, maxillary, lacrimal, and palatine sinuses, and the nasal sinuses were composed of dorsal, and middle nasal sinuses, which were identified and labeled in keeping with cheek teeth as landmarks. The width of the frontal bone and length of the nasal cavity at the level of the 6th cheek tooth were 7 ± 0.3 and 13 ± 0.8 cm, respectively. The volumes of both the right and left sinuses were measured automatically, and the accurate location of sinuses, canals, nasal folds, conchae, and meatuses, and connections between different parts of the nasal cavity and paranasal sinuses were described. The volume of the frontal, maxillary, and palatine sinuses were 279.3 ± 16.4, 80.6 ± 2.6, and 13.5 ± 0.2 cm3, respectively. Frontal, maxillary, and lacrimal sinuses were observed like other ruminants. But the palatine sinus in this breed was not present in the Egyptian sheep, Saanen, and Markhz goats. Also, unlike Sanan and Markhz goats and like Egyptian sheep, ventral nasal sinus was not observed in this breed.

Efficient production of functional and mature alveolar epithelial is a major challenge for developing any cellreplacement therapy for lung degenerative diseases. The extracellular matrix (ECM) pro-vides a dynamic environmentand mediates cellular responses during development and maintenance of tissue functions. The decellularized ECM(dECM) which retains its native-like structure and bio-chemical composition can provide the induction of embryonicstem cell (ESC) differentiation toward the tissue-specific lineages during in vitro culture. Therefore, the aim of this studywas to evaluate the effect of sheep lung dECM-derived scaffold on differentiation and further maturation of ESC-derivedlung progenitor cells.

This study was an experimental study. In the first step, a sheep lung was decellularizedto achieve dECM scaffolds and hydrogels. Afterwards, the obtained dECM scaffold was evaluated for collagen andglycosaminoglycan contents, DNA quantification, and its ultrastructure. Next, the three experimental groups: i. Sheeplung dECM-derived scaffold, ii. Sheep lung dECM-derived hydrogel, and iii. Fibronectin-coated plates were comparedin their abilities to induce further differentiation of human embryonic stem cells (hESCs)-derived definitive endoderm(DE) into lung progenitor cells. The comparison was evaluated by immuno-staining and real-time polymerase chainreaction (PCR) assessments.

We found that the dECM-derived scaffold preserved its composition and native porous structures whilelacking nuclei and intact cells. All experimental groups displayed lung progenitor cell differen-tiation as revealed by theRNA and protein expression of NKX2.1, P63 and CK5. DE cells differenti-ated on dECM-derived scaffold and dECMderivedhydrogel showed significant upregulation of SOX9 gene expression, a marker of the distal airway epithelium.DE cells differentiated on the dECM-derived scaffold compared to the two other groups, showed enhanced expressionof SFTPC (type 2 alveolar epithelial [AT2] cell marker), FOXJ1 (ciliated cell marker), and MUC5A (secretory cell marker)genes.

Overall, our results suggest that dECM-derived scaffold improves the differentiation of DE cells towardslung alveolar progenitor cells in comparison with dECM-derived hydrogel and fibronectin-coated plates.

The aim of this study was to introduce a new animal model of fecal incontinence (FI) by injecting abobotulinumtoxinA in the external anal sphincter (EAS) muscle of dogs which replaces models based on anal sphincter destructions that are invasive, mostly require surgical procedures, expensive, permanent, and painful to the animals. 4 healthy mongrel dogs were used in this study. First, they were received NaCl 0.09% (as control) injections in EAS muscle and effects were assessed by means of Electromyography (EMG) and clinically evaluated by sphincter pinch test and presence of leakage of feces for 2 weeks. Then, they received abobotulinumtoxinA in EAS muscle and reevaluated for 6 weeks to see short-term and medium-term effects of abobotulinumtoxinA injection. Saline had no significant changes in results obtained from EMG, however, there were significant decreases in amplitudes of action potentials after receiving abobotulinumtoxinA in comparison with no injection or saline injection in EAS muscle. Pinch tests were normal after saline injection assessment period, however, then started to be negative, ranging from two days after abobotulinumtoxinA injection to seven days after receiving abobotulinumtoxinA. Animals also had significant presentations of fecal incontinence (leakage of feces and cage contamination with feces) from the 1st week after receiving abobotulinumtoxinA until the 6th week after receiving abobotulinumtoxinA. AbobotulinumtoxinA caused paralysis in the EAS and producd FI conditions in dogs. This animal model was an appropriate substitute to the various invasive, expensive and also complicated procedures with an easy, feasible, noninvasive and non-painful single-stage abobotulinumtoxinA injection.

The outbreak of calf pneumonia in herds occurs due to different pathogens. Vitamin D3 displays a regulatory effect on different cells, especially its pro-differential biological function and stimulates antimicrobial peptides. In the present study, the effects of vitamin D3 on the expression of antimicrobial peptides in experimental pasteurellosis in calves were assessed. Ten Holstein calves (2-4 months old) were randomly divided into two groups. Prepared Pasteurella multocida (3×109 CFU/mL) was inoculated in the trachea of all calves and Vitamin D3 was injected only in the treatment group following confirmation of pneumonia. Blood samples and broncho-alveolar lavage fluids were obtained from both groups at different time intervals and the peripheral blood mononuclear cells were isolated to evaluate the antimicrobial peptides gene expression. The expression of CD4, Cathelicidin, and Defensins genes was measured in vitro conditions following the addition of 10-6, 10-7 and 10-8 molar of vitamin D3. Defensins and CD4 gene expressions revealed a significant difference in the two groups, at the 48, 72, 96, and 120 hours after the challenge time, while the Cathelicidin gene was not expressed in both experimental groups. Surprisingly, increased expression of Cathelicidin, Defensins, and CD4 was observed at a concentration of 10-6 M of vitamin D3. According to the results of this study, vitamin D3 had positive effects on the immune system which was observed as significant improvement in the clinical symptoms of treated calves. The expression of lung-related Defensins and CD4 in vivo and in vitro approved the immunomodulatory effects of vitamin D3 but the gene expression of Cathelicidin is probably related to prescribing higher doses of vitamin D3.

Magnetic cell targeting is a novel non-invasive cellular delivery technique. It improves stem cell delivery to and retention in the injury site. Labeling cells with superparamagnetic iron oxide nanoparticle (SPION) is one of the most important steps of this technique. Appropriate SPIONs selection is believed to be of vital importance.

The current study aimed to produce SPIONs which are capable of attaching to Mesenchymal stem cells surface (MSCs).

Dextran coated SPIONs were produced following co-precipitation method under N2 atmosphere. Bone marrow derived MSCs were isolated and cultured from rabbit humerus bone. Anti-rabbit CD44 monoclonal antibody was attached to the surface of SPIONs and MSCs and were labeled with this final product. SPIONs coating process, particle size, and antibody conjugation efficacy were evaluated using FT-IR, SEM, and Bradford protein measurement assay, respectively. Attachment of antibody-linked dextran coated SPIONs to MSCs was accessed utilizing Prussian blue staining, immunofluorescence analysis, and SEM analysis.

Peaks of FT-IR at 3200 cm-1 and 2922 cm-1 are representative of dextran. The average particle size was 56.13±6.67. The average antibody-SPION conjugation ratio was 77.78±6.35%. The average percentage of the labeled cells in Prussian blue and IF analysis were 71.57±2.53 and 95.04±0.95, respectively. MSCs-SPIONs conjugation was also confirmed via SEM analysis.

In conclusion, it could be inferred that mesenchymal stem cells could successfully be labeled with dextran coated-anti CD44 antibody conjugated- superparamagnetic Iron oxide nanoparticles. This product could be used for further in-vitro and in-vivo evaluations.

Y-U pyloroplasty is a surgical approach that is used to relieve pyloric stenosis. The study of different aspects of laparoscopic Y-U pyloroplasty instead of conventional approaches seems to be an appropriate alternative for the development of such surgeries in animals, as pyloric stenosis is an uncommon but important disease.

The present study aimed to describe the laparoscopic Y-U pyloroplasty in small animals as a new surgical technique, and to compare the duration of surgery, level of surgical stress, and postoperative pain of this method with the conventional Y-U pyloroplasty. It is important to note that this is the first time that laparoscopic Y-U pyloroplasty was performed in dogs.

A total of eight intact male and female mixed breed dogs were randomly divided into two groups of conventional (n=4) and laparoscopic (n=4) pyloroplasty. Operation time, blood glucose concentration, plasma cor-tisol levels, gastric emptying time, pyloric lumen, and diameter and width of pyloric ring, as well as the University of Melbourne Pain Scale (UMPS) were measured in both groups during pre and postoperative intervals.

As a result, the mean operation time for conventional group was significantly lower than that for lapa-roscopic group (38.75±3.15 min vs. 116.25±14.34 min, p <0.05). Blood glucose concentrations in both groups elevated rapidly until 3 hours after surgery and then decreased until 24 hours. Plasma cortisol level in laparoscopic group, however, elevated rapidly until 5 hours after surgery. On the other hand, pyloric diameter and width of pyloric ring significantly increased in both groups. The UMPS in dogs undergoing conventional Y-U pyloroplasty was significantly higher than that in those undergoing laparoscopic Y-U pyloroplasty (p <0.001). Furthermore, pain and gastric emptying time decreased in all dogs.

This study suggests that laparoscopic Y-U pyloroplasty is an applicable minimal invasive sur-gery that is performed through small incisions for the treatment of pyloric stenosis in dogs.

Pyloric stenosis is an uncommon but important gastric outflow disease. Heineke-Mikulicz (H-M) pyloroplasty is one of the pyloroplasty techniques used for the treatment of such diseases. A laparoscopic pyloroplasty is an effective and preferred alternative technique to conventional surgeries. This study aims to compare the duration of surgery, surgical stress level measurement, and postoperative pain in laparoscopic H-M pyloroplasty in normal dogs with a conventional pyloroplasty technique. Eight intact adult mixed breed dogs (5 females and 3 males) were used in this study. Animals were randomly divided into two groups of conventional open (n = 4) and laparoscopic (n = 4) H-M pyloroplasty. Blood glucose concentration, plasma cortisol level, as well as pyloric features including a pyloric lumen, pyloric diameter, pyloric width with ultrasonography, and gastric emptying time with contrast radiography and the University of Melbourne Pain Scale (UMPS) value, were measured in both groups. The mean operation time in the laparoscopic group was longer than that of the conventional group (55.00 ± 15.00 vs. 35.00 ± 4.56 min); however, this difference was not statistically significant. Blood glucose concentration in the laparoscopic group elevated rapidly until 3 hours after the operation and then decreased in 24 hours while blood glucose concentration in the conventional group slowly increased until 24 hours. The UMPS value at 3 hours after conventional H-M pyloroplasty was higher than that of laparoscopic H-M pyloroplasty (19.25 ± 0.75 vs. 6.50 ± 0.96, p < 0.001). Gastric emptying time significantly decreased in both groups. According to the results, in addition to reducing pain and stress, laparoscopic H-M pyloroplasty decreased gastric emptying time in all patients with no morbidity and appears to be a less invasive alternative technique for the management of gastric outflow disease.

Arrhythmias play an important role in reducing the performance of racing horse. There are no studies that maintained the same condition for all horses, and in previous studies, the conditions for all horses were not the same.

The purpose of this study was to evaluate the prevalence of arrhythmias during exercise include warm-up and trotting.

This study was carried out on 30 sport horses. Modified base-apex has been used for electrocardiogram recording. Electrocardiogram was taken by telemetry device in all conditions, all horses were examined in the electric lounge. Warm-up period was 10 minutes and consequently 10 minutes trotting was done, and ECG was recorded during exercise.

18 horses had SVPCs during warm-up and 9 showed SVPCs during trotting; also, 4 horses showed VPCs during trotting. AVB II happened in one horse during warm-up.

The occurrence of SVPCs and VPCs during rest is abnormal, but it is common during physical activity. To better understand the importance of these arrhythmias more studies are needed.

Atrial natriuretic peptide (ANP) is secreted by cardiac myocytes and it`s plasma concentration often increases in patients with cardiovascular disease in response to blood volume expansion and stretching of cardiac chambers. Increase in plasma concentration of ANP (CpANP) has been proved in humans with cardiac diseases and horses with left-sided valvular disease. This study aimed to investigate plasma ANP level in horses with pulmonic valve regurgitation and its association with echocardiographic parameters. Clinical and echocardiographic examinations were performed on several jumping horses in the equestrian clubs of Tehran, Iran. 11 horses with pulmonic valve regurgitation were identified by echocardiographic examination and were included in the case group (Group A), and 14 healthy horses were taken as the control group (Group B). Then, B-Mode, M-Mode and doppler echocardiographic parameters were measured and compared between the two groups. Blood samples from jugular vein were collected in tubes and were transferred to laboratory.CpANP was measured by Sandwich ELISA method using a horse specific kit.CpANP of horses in group1 and group2 were 6.39±2.87pg/ml and 4.78±2.45 pg/ml respectively, but no significant differences were observed.Except for right ventricular internal diameter, other echocardiographic parameters were not significantly different between the two groups.CpANP was significantly correlated to systolic right ventricle length and left ventricular width. In conclusion no significant differences were observed between CpANP of healthy horses and horses with pulmonic regurgitation. Based on the Correlation between CpANP and right ventricle length, an elevation in CpANP might be expected in severe pulmonic regurgitation with change in ventricle`s dimensions.

Diagnosis and prognosis of inflammatory conditions based on acute phase proteins (APPs) level in blood has been exploited for a long time in human medicine and their changes in SARA condition is considered in veterinary medicine.

To evaluate the variations of serum amyloid A (SAA) and haptoglobin (Hp) as main acute phase proteins in cow with normal pH or cows that experienced rumen pH ≤5.8 during first days after parturition.

A total of 106 multiparous Holstein dairy cows were randomly selected after parturition in two different seasons of winter and summer 2017. Cows were divided into 2 groups as normal cows with pH >5.8 or rumen pH ≤5.8. Ruminal fluid samples were collected through stomach tube for rumen pH and blood samples were taken from the coccygeal vein of cows concurrently once per day at days 4, 11 and 18 post-partum. SAA and Hp were determined in blood samples. The PROC MIXED of SAS (2003) was used for all determined variables with repeated measures. BCS, parity and milk yield were included as fixed and cows as random effect. The significant level was declared at P≤0.05, and tendency toward significance was considered at 0.05<P≤0.10 by the Tukey test. Correlation between rumen pH and APPs were surveyed using PROC CORRELATION of SAS (2003).

The results of experiment showed that rumen pH was lower (P<0.05) in summer samples than winter (6.33 vs. 6.46). Rumen pH was lower (P<0.0001) in cows composed by subjects with rumen pH ≤5.8 than pH >5.8. For all examined cows, SAA concentration was greater in winter than summer (P<0.001), as well as at day 4 than days 11 and 18 after calving (P<0.05).Also, Hp concentration was greater for winter samples than summer (P<0.05), and at day 18 than days 4 and 11 after calving (333.33 vs. 299.3 and 300.1 respectively) (P<0.05). SAA and Hp concentrations were not affected by rumen pH. There was no significant correlation between rumen pH and APPs concentrations in both groups of pH ≤5.8 and pH >5.8.

Results showed that rumen pH ≤5.8 seems not to stimulate the APPs production

Exogenous lung surfactant (ELS) obtained from extraction of bronchoalveolar lavage fluid, is prescribed in some respiratory disorders, which could affect production of lung-related cytokines. Interleukin-8 (IL-8) is a major cytokine that could affect severity of lung diseases. In this study, we investigate the possible impact of ELS on IL-8 expression, hematological parameters and IgG and IgM levels in rabbits.     

ELS solution obtained from fresh calf’s lung bronchoalveolar lavage was infused into the lungs of five rabbits via tracheal tube. Blood samples were collected before and after ELS treatment for 30 days.        

Serum IL-8 levels decreased over time following ELS administration. IL-8 expression also decreased after exposure to ELS, but leukocytes count increased significantly 24, 48 and 72 hours after ELS therapy compared to baseline values (P<0.05). IgM level increased significantly 72 hours after the ELS therapy and returned to normal range at the end of study.         

Our findings suggest that ELS could down-regulate IL-8 expression in mononuclear cells while increasing leukocytes population and total immunoglobulins level, which can trigger immune responses without lung damage. However, further studies should be performed to confirm the regulatory effects of ELS on inflammatory responses in lung diseases.

Cardiac murmur and subsequently cardiac failure is one of the poor-performance causes in athletic horses. Attention to murmur character is vital during heart examination. Polo is a sport which demands very high stress on horses, which may result in more stress on cardiovascular system. In this study we assume that high pressure on polo horses makes them more susceptible to valves insufficiency as a result of high velocity across valves. 136 polo horses were evaluated in this study, and all participated in polo matches. Both sides of chest were heard carefully by two clinicians and murmur characters recorded in detail. Afterward the accuracy of auscultation finding was proved by echocardiography, in echocardiography examination all the valves were evaluated carefully for any trace of regurgitation or stenosis across valves. Forty-seven horses showed cardiac murmurs during auscultation (34.55%). Thoroughbred had the highest rate of murmur, with 71% of murmurs observed in this breed. Grade 2 murmurs were more frequent than others and 24 horses showed Grade 2 murmurs. And tricuspid had the highest involvement and 24 horses had tricuspid regurgitation. This study is the first report of cardiac murmur in Polo horses, which showed the high presence of tricuspid and aortic murmur. The difference between prevalence of murmurs in this study and other ones was not remarkable

Coenurus cerebralis is the larval stage of Taenia multiceps inhabiting the small intestine of dogs and wild carnivores as the definitive hosts. A two-year-old wild female goat (Capra aegagrus) was referred with signs of lateral recumbency and seizure for four days and loss of appetite. In clinical examination, paddling, convulsion, and unconsciousness were observed indicating central nervous system disorder. Biochemical analyses showed increased levels of hematocrit, creatinine phosphorous, total bilirubin, direct bilirubin, blood urea nitrogen and calcium. No bacteria has been grown on culture medium taken from cerebrospinal fluid (CSF). The amount of total protein of the CSF was 1.10 g dL-1 (normal range = 20 - 40 mg dL-1). Hematological changes represented a left shift degenerative leukocytosis. At necropsy, two cysts sized over the 3 × 3 cm were detected, one on occipital lobe of the right hemisphere and the other on superior colliculi. The cysts contained a translucent fluid with a number of clusters of scolice growing from the inner layer of the cysts.To the best of our knowledge, this is the first report of coenurosis occurrence in Capra aegagrus.

The ability to generate lung alveolar epithelial type II (ATII) cells from pluripotent stem cells (PSCs) enables the study of lung development, regenerative medicine, and modeling of lung diseases. The establishment of defined, scalable differentiation methods is a step toward this goal. This study intends to investigate the competency of small molecule induced mouse embryonic stem cell-derived definitive endoderm (mESC-DE) cells towards ATII cells.
In this experimental study, we designed a two-step differentiation protocol. mESC line Royan B20 (RB20) was induced to differentiate into DE (6 days) and then into ATII cells (9 days) by using an adherent culture method. To induce differentiation, we treated the mESCs for 6 days in serum-free differentiation (SFD) media and induced them with 200 nM small molecule inducer of definitive endoderm 2 (IDE2). For days 7-15 (9 days) of induction, we treated the resultant DE cells with new differentiation media comprised of 100 ng/ml fibroblast growth factor (FGF2) (group F), 0.5 μg/ml hydrocortisone (group H), and A549 conditioned medium (A549 CM) (group CM) in SFD media. Seven different combinations of factors were tested to assess the efficiencies of these factors to promote differentiation. The expressions of DE- and ATII-specific markers were investigated during each differentiation step.
Although both F and H (alone and in combination) promoted differentiation through ATII-like cells, the highest percentage of surfactant protein C (SP-C) expressing cells (~37%) were produced in DE-like cells treated by Fῠ. Ultrastructural analyses also confirmed the presence of lamellar bodies (LB) in the ATII-like cells.
These results suggest that hydrocortisone can be a promoting factor in alveolar fate differentiation of IDE2- induced mESC-DE cells. These cells have potential for drug screening and cell-replacement therapies.

Colisepticemia is an acute fatal disease that occurs primarily in calves less than 2 week’s age and in calves with failure of passive transfer, and cause heavy economic losses to husbandry industries. Primary signs of septicemia is nonspecific and cannot be differentiated from non-infectious diseases or diseases with local infection such as diarrhea. Leukogram is a key laboratory tool to evaluate neonates suspected to septicemia in which supplies valuable diagnostic information for clinician next to physical examination. In this study, colisepticemia was induced with Escherichia coli strain of O111:H8 in 10-day bull Holstein calves weighting 50±50 Kg. so, suspension of bacteria in normal saline, containing 1.5× 109 CFU, was given intravenously through the jugular vein. Leukogram changing was examined from before 24 hours of bacterial injection till 24 hours after that. Leukopenia, neutropenia, lymphopenia, eosinophilia, thrombocytopenia and increase of PCV, mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH) and hemoglobin, and decrease in red blood cell count was observed significantly associated with septicemia beginning (P 0.05). Total protein: fibrinogen ratio altered from >15 at 0h to

This study was conducted on 384 clinically healthy sheep and goats from farms around Tehran suburb. The animals were divided into two equal groups (according to species) and then assigned into three age groups, two gender groups and female animals into two groups: late pregnant and non-pregnant. Heart sounds were auscultated by two cardiologists and heart rate and probable murmurs were recorded. Using the base-apex lead, the electrocardiograms were taken. Three types of dysrhythmias including sinus tachycardia, sinus arrhythmia and atrial premature complex were observed. Regarding the incidence of dysrhythmias, there were significant statistical differences between the age and sex groups, but not between pregnant and non-pregnant animals. The mean heart rate of sheep and goats with sinus arrhythmia was significantly lower than those with regular cardiac rhythm (p<0.001). The prevalence of the murmurs in sheep and goats, which all were systolic, were 6.3% and 8.9%, respectively. Only one holosystolic murmur was detected in a sheep and the others were early to early-mid systolic murmurs. One murmur was detected with grade 3/5 in sheep and other murmurs were grade 1 and 2. The number of murmurs on the mitral valve was higher in age groups 1 (< 6 months) and 2 (6-12 months) compared to group 3 (> 12 months). But there was no significant relationship between the incidence of murmur and age, gender and pregnancy. The results of this study revealed that small ruminants have lower prevalence of dysrhythmias and murmurs compared to cattle and horses.

Bovine coronavirus (BCoV) is a primary cause of neonatal calf diarrhea worldwide, and is also associated with acute diarrhea in adult cattle during the winter season, resulting heavy economic losses to both dairy and beef industry throughout the world.
The Objective of the present study was to screen the fecal samples for BCoV collected from diarrhea from six geographic region of Iran, with the aim to deepen the knowledge of BCoV prevalence and epidemiology in Iran.
MEETHODS: 194 fecal samples from diarrheic calves up to one-month age, based on the geographic area were collected. Samples from all the cases were screened for the presence of BCoV by commercially available ELISA kit. Furthermore, all positive samples were subjected to RT-PCR for confirmation.
ELISA examination revealed that 7.2 % of taken samples, were positive. All positive samples in ELISA were also positive in RT-PCR. All samples from northwest, northeast, and west, were negative. The average ages of positive calves were nine days. The average stool scores in positive samples and negative samples were 2.5 and 2.1 respectively. 71/4 % of positive samples had fever.
The results of the present study showed that the occurrence of BCoV in stool samples of diarrheic calves in dairy farms of Iran is lower than the other reports on the world.

Annexins are fundamentally related proteins that process a variety of physiologic and pathologic procedures, including suppression of inflammation. Ten Holstein-Frisian bull calves (10 ± 1 days old) weighting 50 ± 5 kg were chosen to induce the experimental septicaemia using O111:H8 strain of E. coli. Blood samples were collected to determine the plasma annexin A1 , annexin A2, TNF-α, IFN- γ, IL-8 and neutrophil count at 0, 24, 48, 72, 96 and 120 hours after induction of septicemia. Significant increased concentrations of serum annexin A1 and annexin A2 in circulating blood in response to experimental coliseptisemia were observed during experiment. Maximum levels of annexinA1 and A2 were recorded at 72h after challenge. A statistically significant increase in blood neutrophil count occurred from beginning of septicemia untill 24h after onset of septicemia. Annexin A2 and Annexin A1 had no significant correlation with neutrophil count. Serum cytokine concentrations reached their maximum level at 48h after challenge and then decreased to basal level before antibiotic therapy. This study showed that serum annexin concentrations, increasing during colisepticemia in calves, in association with cytokines could be a reliable marker to confirm the occurrence of anti-inflammatory response.

Annexins (including annexin A1 and annexin A2) are important proteins which have some roles in organisms such as intracellular signal conduction, membrane cellular skeletal connection, cellular proliferation and differentiation, especially inhibitory function in inflammation processing. Pasteurella multocida is the most common bacterial pathogen and has high prevalence in pneumonia.
This study was aimed to determine experimentally annexin A1 and annexin A2 in the serum of calves affected by Pasteurella multocida pneumonia. In this research, 10 male calves (2 - 4 months) were allocated to two equal groups, one group as the case: 300 ml in dilution 2×109 CFU Pasteurella multocida bacteria and the other as control group: 300 ml normal saline inoculated by special lavage catheter through oral to trachea. Clinical scores were recorded based on available tables. In treatment group, about 18 to 24 hours after inoculation and synchronous with observation clinical signs changes, bronchoalveolar lavage for cytology and bacteriology examination were done of fluids results from washing. Blood sampling was taken from calves jugular vein in both groups then blood serums were examined by using ELISA kits.
The rates of annexin A1 and annexin A2 in blood serum of treatment group showed significant increase (using independent t test) compared to control group (p It seems these annexins (annexin A1 and annexin A2) can be used as important biomarkers in blood serum to diagnose inflammation processes such as pneumonia.

Colisepticemia is an acute fatal disease in farm animal neonates. Clinical finding of septicemia is non-specific and cannot be differentiated from signs of noninfectious disease or disease with local infection such as diarrhea.
Evaluation of clinical signs variations in calves with experimental septicemia with Escherichia coli O111:H8.
Colisepticemia was experimentally induced in ten Holstein bull
calves after an adaptation period. Vital signs and 7 clinical criteria were recorded from 24
h before septicemia until 48 h after that. Blood culture was performed and treatment was
done based on antibiogram from 24 h after challenge.
Changes of suckling reflex and shock were not significant. Changes of appetite, dehydration, behavior, standing ability, total score from 24 h before the challenge to 24 h after treatment were significant (p The present study indicated clinical signs changed unfavorably following septicemia that were dissolved approximately during 24 h, depending on treatment in appropriate time and drug choice. Thus, a targeted scoring system will be useful in clinical evaluation of septicemia, quantifying the changes procedure and treatment efficacy.

SP-A and SP-D are hydrophilic proteins which regulate the inflammatory response of the lung. Pasteurella multocida is one of the most common bacteria isolated from calves suffering from shipping fever pneumonia, one of the most problems in dairy herds.
Evaluation of surfactant content may provide a valuable diagnostic tool for detection of calf pneumonia due to Pasteurella multocida and also state of treatment.
Ten Holstein-Frisian bull calves aged 4 months with body weight of 120 ± 5 kg were selected for study in two groups. The Pasteurella multocida (PMC66 Razi) was used in the present study for inducing pneumonia. The Bronchoalveolar lavage (BAL) process was done in selected calves. BAL fluid was collected and centrifuged and finally the sediment (crude surfactant) was reserved at -20˚C.The cytological evaluation and surfactant content was assayed by ELISA, TPL kit assay and HPLC.
The serum levels of SP-A and SP-D in pneumonic group were significantly elevated. Although the increased Bronchoalveolar lavage fluid (BALF) level of SP-A in pneumonic cases was found as compared with the control animals, but the statistical analysis didnt show any significant differences between two groups. The level of SP-D in BALF of pneumonic group significantly elevated. The amount of Dipalmitoylphosphatidylcholine (DPPC) in pneumonic group decreased significantly in comparison control group.
Pasteurella inducing pulmonary can changed the major component of lung surfactant which evaluation of these markers can be helpful as an appropriate tool in diagnostic state of pneumonia and healing.

Iran's Comprehensive Scientific Map is an inclusive, harmonized, and dynamic set of foundations, goals, policies, strategies, structures, and necessities of science and technology strategic change based on Islamic and futuristic values for achieving the goals of Iran's 20-year vision plan. Rereading the recent years words of Iran's Supreme Leader, the macro plans and goals of the Islamic Republic, including implementation of the country's comprehensive scientific map, is only accomplished by translating it to a national discourse. This research is intended to study dimensions and factors based on grounded theory for the implementation discourse of the country's comprehensive map according to Supreme Leader's viewpoint. The computer data analysis software MAXQDA12 has been aided in data analysis, all the speeches of Supreme Leader's since 1988 coded line by line, and reviewed and reexamined multiple times to achieve theoretical saturation on key concepts and Categories. Eventually, 6 Categories and 62 key concepts extracted from 405 codes were identified out of His Excellency's remarks. Ultimately, the discourse pattern for implementation of the country's comprehensive scientific map has been presented based on Supreme Leader's viewpoints.

Heart valve diseases are considered a common disease in human and animals, and valve replacement is an option for treatment of valvular diseases.
In this study efficacy of a tissue engineered valve in thoracic aorta was evaluated with transthoracic echocardiography.
This study was undertaken on 6 male sheep. Echocardiography was performed on all sheep 24 hours before surgery and repeated 24 hours (D1), 2 weeks (W2) and 4 weeks (W4) after surgery. Right parasternal long axis view of left ventricular outflow tract (LVOT) was used to assess hemodynamic across new valve.
Velocity time integral (VTI) significantly decreased from 18.98±2.88 before surgery to 12.55±2.48 one day after surgery (D1) (p Our results demonstrated that this tissue engineered aortic valve (TEAV) could change some hemodynamic parameters, but heart could compensate some of them. Valve movement remained normal but the major complication was aneurism which seems to be the result of poor scaffold.