BACKGROUND High humidity and temperature in Taiwan have significant effects on the reproductivity of Holstein cattle,resulting in the occurrence of bovine ovarian follicular cyst(OFC).Because of economic loss from OFC...BACKGROUND High humidity and temperature in Taiwan have significant effects on the reproductivity of Holstein cattle,resulting in the occurrence of bovine ovarian follicular cyst(OFC).Because of economic loss from OFC,manual rupture and hormone injection have been advocated for the management of OFC.However,these incomplete treatments increase hormone resistance in cattle.Mesenchymal stem cells(MSCs)derived from placental stem cells(PSCs)demonstrate potential properties for the treatment of several diseases via promoting angiogenesis and immune modulation.AIM To establish the possibility of cattle placental stem cells(CPSCs)as a treatment modality for OFC of cows in Taiwan.METHODS The cows with OFC were divided into three groups:control(BC1 and BC2),hormone(H1 and H2),and CPSC(PS1 and PS2)treatment groups.In the hormone treatment group,the cows were given gonadotrophin-releasing hormone(GnRH)-prostaglandin-GnRH intramuscular injection with or without drainage of follicular fluid.In the CPSC treatment group,CPSCs were isolated from the placenta after labor.With the identification of surface antigen on stem cells,the cows were administered ovarian injection of 1×106 or 6×106 CPSCs with drainage.In all groups,OFC was scanned by ultrasound once a week for a total of seven times.The concentrations of estradiol and progesterone in serum were tested in the same period.The estrus cycle was analyzed by food intake and activity.If estrus was detected,artificial insemination was conducted.Then the cow was monitored by ultrasound for confirmation of pregnancy.RESULTS After 7 d of culture,CPSCs were successfully isolated from placental pieces.CPSCs significantly proliferated every 24 h and had high expression of MSC markers such as cluster of differentiation 44,as determined by flow cytometry.Ultrasound showed lower numbers of OFCs with drainage of follicular fluid.We achieved recovery rates of 0%,50%,50%,75%,75%and 75%in BC1,BC2,H1,H2,PS1,and PS2,respectively.Higher concentrations of progesterone were detected in the CPSC treatment groups.However,both hormone and CPSC treatment groups had no significant difference in the concentration of estradiol.The estrus rate was 0%,100%,25%,75%,75%and 75%in BC1,BC2,H1,H2,PS1,and PS2,respectively.The two fetuses were born in H2 and PS1.In brief,cows with CPSC injection achieved higher recovery,estrus,and inseminated conception rates.CONCLUSION CPSCs have efficacy in treating cows with OFC,and thus,may serve as an alternative treatment for reproductive disorders.展开更多
We herein describe a rare case of multilocular thymic cysts (MTCs) with follicular hyperplasia. The patient was a 50-year-old man, who was symptom-free. A mediastinal mass was found on chest computed tomography (CT) f...We herein describe a rare case of multilocular thymic cysts (MTCs) with follicular hyperplasia. The patient was a 50-year-old man, who was symptom-free. A mediastinal mass was found on chest computed tomography (CT) followed after pancreatitis. Chest CT revealed a 30 × 10 mm anterior mediastinal mass with multiple cystic lesions. Magnetic resonance imaging showed an anterior mediastinal cystic mass with low-signal intensity on T1-weighted image and on high-signal intensity T2-weighted image. Thus we made a preoperative diagnosis of MTCs with thymoma within the cyst wall. The lesion was resected by thymectomy. Intraoperatively, multiple cysts and swelling of mediastinal lymph nodes were noted throughout the entire thymus. Histopathological findings revealed lymphoid follicular hyperplasia of thymic tissues but no neoplastic lesions. Based on these findings, a diagnosis of MTCs associated with thymic hyperplasia was made. This is a rare case that preoperatively was difficult to diagnose.展开更多
文摘BACKGROUND High humidity and temperature in Taiwan have significant effects on the reproductivity of Holstein cattle,resulting in the occurrence of bovine ovarian follicular cyst(OFC).Because of economic loss from OFC,manual rupture and hormone injection have been advocated for the management of OFC.However,these incomplete treatments increase hormone resistance in cattle.Mesenchymal stem cells(MSCs)derived from placental stem cells(PSCs)demonstrate potential properties for the treatment of several diseases via promoting angiogenesis and immune modulation.AIM To establish the possibility of cattle placental stem cells(CPSCs)as a treatment modality for OFC of cows in Taiwan.METHODS The cows with OFC were divided into three groups:control(BC1 and BC2),hormone(H1 and H2),and CPSC(PS1 and PS2)treatment groups.In the hormone treatment group,the cows were given gonadotrophin-releasing hormone(GnRH)-prostaglandin-GnRH intramuscular injection with or without drainage of follicular fluid.In the CPSC treatment group,CPSCs were isolated from the placenta after labor.With the identification of surface antigen on stem cells,the cows were administered ovarian injection of 1×106 or 6×106 CPSCs with drainage.In all groups,OFC was scanned by ultrasound once a week for a total of seven times.The concentrations of estradiol and progesterone in serum were tested in the same period.The estrus cycle was analyzed by food intake and activity.If estrus was detected,artificial insemination was conducted.Then the cow was monitored by ultrasound for confirmation of pregnancy.RESULTS After 7 d of culture,CPSCs were successfully isolated from placental pieces.CPSCs significantly proliferated every 24 h and had high expression of MSC markers such as cluster of differentiation 44,as determined by flow cytometry.Ultrasound showed lower numbers of OFCs with drainage of follicular fluid.We achieved recovery rates of 0%,50%,50%,75%,75%and 75%in BC1,BC2,H1,H2,PS1,and PS2,respectively.Higher concentrations of progesterone were detected in the CPSC treatment groups.However,both hormone and CPSC treatment groups had no significant difference in the concentration of estradiol.The estrus rate was 0%,100%,25%,75%,75%and 75%in BC1,BC2,H1,H2,PS1,and PS2,respectively.The two fetuses were born in H2 and PS1.In brief,cows with CPSC injection achieved higher recovery,estrus,and inseminated conception rates.CONCLUSION CPSCs have efficacy in treating cows with OFC,and thus,may serve as an alternative treatment for reproductive disorders.
文摘We herein describe a rare case of multilocular thymic cysts (MTCs) with follicular hyperplasia. The patient was a 50-year-old man, who was symptom-free. A mediastinal mass was found on chest computed tomography (CT) followed after pancreatitis. Chest CT revealed a 30 × 10 mm anterior mediastinal mass with multiple cystic lesions. Magnetic resonance imaging showed an anterior mediastinal cystic mass with low-signal intensity on T1-weighted image and on high-signal intensity T2-weighted image. Thus we made a preoperative diagnosis of MTCs with thymoma within the cyst wall. The lesion was resected by thymectomy. Intraoperatively, multiple cysts and swelling of mediastinal lymph nodes were noted throughout the entire thymus. Histopathological findings revealed lymphoid follicular hyperplasia of thymic tissues but no neoplastic lesions. Based on these findings, a diagnosis of MTCs associated with thymic hyperplasia was made. This is a rare case that preoperatively was difficult to diagnose.
