Antidepressant effects of a Persian herbal formula on mice with chronic unpredictable mild stress.

Objective: Depression is a serious mental disorder. Despite numerous medications, there are still limitations in depression treatment. So, herbal medicine has been considered an alternative therapy. This survey evaluated the effects of a Persian herbal formula on mice with chronic unpredictable mild stress (CUMS). Materials and Methods: A combination of Aloysia triphylla citrodora, Citrus aurantium, Echium amoneum, Lavandula angustifolia, Melissa officinalis, Salix aegyptiaca, Valeriana officinalis, Viola odorata, and Cinnamomum zeylanicum was prepared. Except for the control group, animals were subjected to CUMS for 8 weeks in 5 groups (n=10): CUMS, vehicle (distilled water), herbal formula (0.23 ml/mouse), fluoxetine (20 mg/kg), and bupropion (15 mg/kg). All administrations were performed orally daily for the last 4 weeks. The depression and anxiety-like behaviors were assessed by sucrose preference (SPT), tail suspension (TST), forced swimming (FST), and elevated plus-maze (EPM) tests. Superoxidase-dismutase (SOD) activities in tissues, and serum levels of cortisol, alanine-aminotransferase (ALT), and creatinine were measured. Also, histopathological changes were evaluated. Results: This formula significantly increased SPT (p<0.001) and decreased immobility time in FST and TST (p<0.01), but it was not effective on EPM vs. CUMS mice. The herbal formula did not change the serum level of creatinine or ALT, but insignificantly reduced cortisol vs. CUMS and vehicle groups. SOD activity increased in the brain vs. vehicle group (p<0.05). There were no changes in histological examination. Conclusion: The herbal formula improved depression-like behaviors which are possibly related to its anti-oxidative effect on the brain. Also, it did not cause any negative changes in the biochemical and histopathological analysis.

Pathomorphologial investigation of spondylolisthesis leaded to spondylosis in commercial broiler chicken with posterior paralysis: A case study.

Spondylolisthesis known as kinky back syndrome is a deformity of the free sixth thoracic vertebra including enlargement and rotation resulting in posterior paralysis in broiler chicken. Genotype, feeding regimes and environment are involved in occurrence of this congenital anomaly. Spondylolisthesis may result in or happen simultaneously with two other major axial skeleton pathologies including spondylosis and spondylitis as a result of occurrence of degenerative necrobiotic lesions and inflammation of the vertebrae, respectively. This report deals with a male broiler chicken with posterior paralysis in the second week of rearing. After euthanasia, the specimen was evaluated at macroscopic and microscopic levels. Macroscopic findings showed the unilateral enlargement of body and transverse process of sixth thoracic vertebra and downward rotation of the body. The histopathological studies revealed the focal chondronecrosis and degenerative changes in articular facets and cranial process of the vertebra. In conclusion, a diagnosis of spondylolisthesis followed by spondylosis was made based on macroscopic and histopathological findings that to the authors' best knowledge, is the first report in a broiler farm in Iran.

Histomorphology of the lower respiratory tract in the Indian crested porcupine (Hystrix indica).

The Indian crested porcupine (Hystrix indica) (ICP) is widely distributed in Asia; however, compared with other rodents, little is known about the structures of its respiratory system. The aim of this study was to evaluate the histomorphology of the lower respiratory portion of the ICP to provide a basis for the identification of the normal structure of this organ. The larynx, trachea and lungs of four carcasses of adult Indian crested porcupines (two males and two females) were dissected and fixed in 10% neutral-buffered formalin. The gross anatomy and histology of all specimens were evaluated. A macroscopic evaluation showed unique structures in the ICP respiratory system, including the presence of a chamber-like structure at the origin of the bronchi and a difference in epiglottis shape between males and females. Histologically, the stratified squamous epithelium covered the epiglottis and arytenoid cartilage, and the pseudostratified ciliated columnar epithelium covered the internal part of the thyroid and cricoid cartilages. Histomorphological studies showed a few goblet cells in the tracheal epithelium. In the bronchi and larger bronchioles, pseudostratified ciliated columnar epithelia were observed. Bronchi were surrounded by segments of cartilage. Distal bronchioles had a simple cuboidal/columnar epithelium with club (Clara) cells, lacked cartilaginous tissue in their walls and had a complete smooth muscle layer. These results revealed histomorphological differences between the ICP and other rodents.

A case of asymmetrical monocephalus dipygus (tetrapus dibrachius) in a male Holstein calf in Iran.

Dipygus is a teratological fetus with a double pelvis, genitals, and extremities. Congenital duplications in cattle are rare. Caudal duplication is more common in sheep and pigs while cranial duplications seem to be predominant in cattle. Asymmetric or parasitic conjoined twins consisting of an incomplete twin (parasite) attached to the body of a fully-developed twin (autosite). This report deals with a male Holstein calf with two extra limbs, in the pelvic region which were directed ventrally between the two normal hind limbs. The extra limbs were completely developed in one side and in other side just a bony mass were observed. So classification has been made as asymmetrical attached twins. The genital system was not affected and just one extra kidney-like structure was found. To the authors' best knowledge, this is the first report of asymmetrical monocephalus dipygus (tetrapus dibrachius) in a male Holstein calf in Iran.

Effect of soy milk on circulating 17- ß estradiol, number of neurons in cerebral cortex and hippocampus and determination of their ratio in neonatal ovariectomized rats.

This study was conducted to evaluate the effect of soy milk on serum 17- ß estradiol level and number of neurons in cerebral cortex and hippocampus as well as determination of the ratio of neurons in cortical and hippocampal regions in neonatal ovariectomized rats. Thirty female rats (one day old) were divided into six groups of five. At day 7, ovariectomy surgery was performed in four groups and two other groups were assumed as sham and control groups. Three groups of ovareictomaized rats were fed with soy milk at the doses of 0.75, 1.50 and 3.00 mL kg-1 per day since they were 14. At day 60, the blood samples were collected to measure the17- ß estradiol concentration, and then the brain of rats were prepared for histological studies. The serum 17- ß estradiol level significantly increased in ovariectomized rats fed with soy milk compared to ovariectomized rats with no soy milk supplementation. In addition, the results showed that soy milk significantly increased the number of neurons in CA1, CA2 and dentate gyrus regions of hippocampus and granular layer of cerebral cortex in ovariectomized rats, whereas there was no significant change in number of neurons in CA3 zone of hippocampus and molecular, pyramidal and multiform layers of cerebral cortex in ovariectomized rats fed with soy milk. The ratio of cerebral cortex neurons to hippocampal neurons had no significant changes among the experimental groups.

Histomorphometric study on blood cells in male adult ostrich.

In order to perform a histomorphometric study of blood cells in male adult ostrich, blood samples were obtained from jugular vein of 10 clinically healthy male adult ostriches (2 - 3 years old). The slides were stained with the Giemsa methods and the smears were evaluated for cellular morphology, with cellular size being determined by micrometry. The findings of this study revealed that the shape of the cell, cytoplasm and nucleus of erythrocytes in male adult ostriches were similar to those in other birds such as quails, chickens, Iranian green-head ducks.