Guizhi Fuling capsule can induce apoptosis of myeloma cells through the mitochondrial apoptosis pathway

Objective To observe the effects of Guizhi Fuling capsule(GZFLC)on RPMI 8226 cells and explore the mechanisms.Methods Cell Counting Kit-8(CCK-8)assays and flow cytometry were used to detect the viability and apoptosis levels of RPMI 8226 cells.The effects on mitochondria were examined by ROS and JC-1 assays.Western blotting was used to detect the expression of B cell lymphoma-2(Bcl-2),Bax,cleaved caspase-3,and Apoptotic protease-activating factor 1(Apaf-1).Results GZFLC drug serum decreased the viability and increased the apoptosis of RPMI 8226 cells.In addition,this drug increased ROS levels and decreased the mitochondrial membrane potential(MMP).Western blotting showed that the Bcl-2/Bax ratios were decreased in the GZFLC drug serum-treated groups,whereas the expression levels of cleaved caspase-3 and Apaf-1 were increased.Conclusion GZFLC promoted apoptosis of myeloma cells through the mitochondrial apoptosis pathway.

Diagnosis and Differential Diagnosis of Desmoplastic Fibroblastoma by Clinical, Radiological, and Histopathological Analyses

Background： Desmoplastic fibroblastoma （collagenous fibroma） is an uncommon benign soft-tissue tumor, rarely involving bone. It shares some overlapping features with other infiltrate tumors, such as desmoid-type fibromatosis, neurofibroma, and low-grade fibromyxoid sarcoma. The misdiagnosis may cause unnecessary surgical overtreatment, especially for those involving bone. In order to deepen the understanding of the diagnosis and differential diagnosis of desmoplastic fibroblastoma, we planned to analyze the clinical, radiological, and histopathological features and the outcome of desmoplastic fibroblastoma on the basis of case analysis and literature review. Methods： Sixteen cases were retrieved from the surgical pathology records from May 2011 to April 2016 in the Department of Pathology in Beijing Jishuitan Hospital. Formalin-fixed, paraffin-embedded specimens of 16 cases of desmoplastic fibroblastoma were collected. Hematoxylin and eosin stain and immunohistochemistry were used to observe the histological features of desmoplastic fibroblastoma of soft tissue and bone. The images for diagnosis obtained from the ultrasonic examination, X-ray, magnetic resonance imaging, and computed tomography were used to observe the radiological features. Related literatures were retrieved from the PubMed and CNKI databases. Results： Sixteen cases of desmoplastic fibroblastoma of soft tissue were located in the hand （n = 7）, loot （n = 4）, upper arm （n = 1）, shoulder （n = 1）, forearm （n = 2）, and one case occurred in the proximal femur. Age ranged from 32 to 82 years （median age： 58 years）. There were six females and ten males. Histologically, the lesions of soft tissue appeared as well-circumscribed masses with abundant collagenous matrix and low vascularity. Tumor cells were stellate- or spindle-shaped and uniformly distributed within the extracellular matrix. In five cases, the desmoplastic fibroblastoma were found to have infiltrated into the skeletal muscle tissue. In one case ofdesmoplastic fibroblastoma of bone, radiographs revealed osteolytically well-defined lesion, lmmunohistochemistry stain showed that vimentin and smooth muscle actin were positive in all cases of desmoplastic fibroblastoma. Conclusions： Desmoplastic fibroblastoma （collagenous fibroma） has prominent clinical, histopathological, and radiological features. Before the differential diagnosis from other tumors is obtained by thorough analysis and comparison of the similar and different characteristics, the appropriate surgical management and accurate prognosis evaluation could not be delivered to the patient.