BACKGROUND:Lung cancer stem cel s are tightly related to the treatment and prognosis of lung cancer. We can provide more references for clinical diagnosis and treatment of lung cancer through the study on the tumorigenicity and surface markers of lung cancer stem cel s. OBJECTIVE:To explore the enrichment methods for lung cancer stem cel s and cel ular tumorigenicity. METHODS:Lung cancer stem cel s were induced in serum-free culture medium containing epidermal growth factor, insulin-like growth factor 1, and basic fibroblast growth factor. Then, the expressions of related surface markers were detected using immunofluorescence method. After that, mice were implanted subcutaneous with lung cancer stem cel spheres to understand the tumorigenicity of lung cancer stem cel s. RESULTS AND CONCLUSION:Lung cancer stem cel s under serum-free induction and culture were changed to sphere-forming cel s, and the immunofluorescence detection showed that over 80%of sphere-forming cel s were positive for CCSP, SP-C and OCT4. After transplantation of sphere-forming cel s, the mice showed a high tumorigenicity. These findings indicate that sphere-forming cel s are formed after serum-free suspension culture of lung cancer stem cel s, which have a higher tumorigenicity.

Evidence-Based Practice ; Humans ; Practice Guidelines as Topic

Evidence-Based Medicine ; Evidence-Based Practice ; Humans ; Practice Guidelines as Topic

Evidence-Based Practice ; Practice Guidelines as Topic

Heart Valve Prosthesis Implantation ; Humans ; Tricuspid Valve Insufficiency ; diagnosis ; etiology ; therapy

Child ; Humans ; Vesico-Ureteral Reflux ; therapy

Coronary Disease ; complications ; Erdheim-Chester Disease ; complications ; Humans ; Male ; Middle Aged

Adrenal Gland Neoplasms ; Adult ; Humans ; Male ; Pheochromocytoma ; Rupture, Spontaneous

Objective To summarize the imaging features of ultrasound, computed tomography (CT) and gadolinium-ethoxybenzyl-diethylenetriamine pentoacetic acid (Gd-EOB-DTPA) enhanced magnetic resonance imaging (MRI) of solitary extramedullary plasmacytoma (SEP) of liver, and investigate the key points of identification and diagnosis.Methods The clinical data of 1 patient with SEP of the liver who was admitted to the Southwest Hospital of the Third Military Medical University at 7 May, 2015 were retrospectively analyzed.The patient received contrast-enhanced ultrasound (CEUS) , plain and enhanced scan of CT and Gd-EOB-DTPA enhanced MRI.The patient underwent treatment after preoperative examinations.Pathological examination and immunohistochemical staining were done after operation.The patient was followed up by outpatient examination of color Doppler ultrasonography till 12 November, 2015.The location, size, shape, echo, density or signal, enhancement pattern, secondary performance were recorded by imageological examinations.Surgical treatment, results of pathological examination, immunohistochemical staining, postoperative recovery and recurrence of tumor were recorded.Results CEUS examination demonstrated a hypoechoic hepatic lesion at S7 segment of the right liver measuring 24 mm × 19 mm with clear boundary and dotted blood flow signal in the mass.In the arterial phase, the lesion was enhanced rapidly.Abdominal CT scan showed that the mass at the right liver lobe had slightly low density with clear boundary, the CT value of 34-64 HU, and liver capsule having no significant outer convex.On enhanced CT, the lesion presented a homogeneous enhancement and shape of posterior upper tributaries of right hepatic artery in the arterial phase, the lesion presented continuous enhancement which was slightly lower than that of liver parenchyma in the portal venous phase with the CT value of 77-102 HU, the lesion presented decreased enhancement with the CT value of 41-98 HU in the equilibrium phase.The maximum density projected image showed that the shape of an enlarged vascular image was found inside the lesion in the arterial phase and the lesion was adjacent to inferior vena cava and right hepatic vein which was compressed and displaced in the portal venous phase.On Gd-EOB-DTPA enhanced MRI, the right liver lobe showed a homogeneous T1-weighted and T2-weighted signal with clear boundary and without lipid component, hemorrhage or calcification.The lesion presented obvious enhancement in the arterial phase, homogeneous continuous enhancement which was slightly lower than that of liver parenchyma in the portal venous phase, decreased enhancement in the equilibrium phase.The lesion showed mild signal, adjacent to inferior vena cava and right hepatic vein which was compressed and displaced in the hepatobiliary phase.There was no obvious cirrhotic nodule in the liver.The patient received laparoscopic space-occupying lesion resection at the right liver lobe after finishing inspection.The grayish white lesion in hardness was seen, with clear boundary and capsule, adjacent to anterior wall of inferior vena cava and right hepatic vein in the operation.The results of pathological examination showed that the small tumor cells were scattered in bundle, nuclear were round or oval shape and eccentric with mitosis seen.The results of immunohistochemical staining showed that endothelium cell marker CD34, human multiple myeloma gene MUM1, vimentin, plasmacyte markers 38 and 138, expression of λ light chain protein were positive, the positive cell rate of proliferation activity marker Ki-67 was 10％.The results of blood routine test and blood biochemistry showed that the patient had no anemia, hypercalcemia, abnormal renal function or monoclonal immunoglobulin in the serum or urine.The results of postoperative bone marrow aspiration, immunoglobulin determination and whole body bone scan showed normal.Postoperative examinations confirmed the SEP of right liver.The patient recovered well and was discharged at postoperative day 9.Postoperative change at right liver lobe was detected by color Doppler ultrasonography at 1 month after operation.The patient was followed up for 6 months without tumor recurrence.Conclusion SEP of liver mainly locates at the right lobe of liver, and the imaging features include clear boundary, homogeneous echo, density or signal, adjacent capsule showing no significantly outer convex, surrounding vein demonstrating no violation and shifted by compression, enhancement pattern as fast-in and fast-out.

Objective To explore the effect of circadian rhythm disorder on cognitive decline and neurologic impairment after traumatic brain injury (TBI) in rats.Methods Rats were subjected to a weight-drop model of TBI,then the rat models were divided into 2 groups ac-cording to the environmental length of day and night ,namely,the whole day group (12 h light/12 h light) and the control group (12 h light/12 h dark).After 14 days,the Morris water maze test and step-down test were carried out to evaluate the memory of the rats in each group . HE staining and immunohistochemistry ( BrdU, Ki-67) were carried out to evaluate the degree of the neurologic impairment of the rats in each group.And the mRNA expressions of Caspase-3,Caspase-9,Bcl-2 and Bax were evaluated with realtime PCR .Results The memory function of the rats in whole day group was significant lower than control group ;the damage degree of the cells in the hippocampus and the cortical lesion volume in whole day group were significant higher than control group ;the cell proliferation rate and newborn cell survival rate in the whole day group decreased significantly compared with the control group ;the mRNA expression of Bcl-2 in whole day group was signifi-ant lower than control group ,and the mRNA expression of Caspase-3,Caspase-9 and Bax in whole day group was signifiant higher than control group.Conclusion Circadian rhythm disorder can worsen TBI-induced cognitive decline and neurologic impairment .