Folic Acid ; administration & dosage ; therapeutic use ; Humans ; Neural Tube Defects ; prevention & control

OBJECTIVETo investigate the clinicopathologic features and the prognostic factors of endometrial stromal sarcoma (ESS).

METHODS55 cases of endometrial stromal sarcoma were reviewed and categorized into 3 pathologic types based on the related literatures, i.e., low grade endometrial stromal sarcoma (LGESS), undifferentiated endometrial sarcoma with nuclear uniformity (UES-U) and undifferentiated endometrial sarcoma with nuclear pleomorphism (UES-P). Meanwhile, the pathologic features were reviewed, including fibroid, myoid, mucoid, and epithelioid differentiation and mitotic index. Clinical and follow-up data were collected.

RESULTSIn endometrial stromal sarcoma, two or three pathologic types co-existed in one case, including 12.8% (5/39) of LGESS, 5/9 of UES-U, and 5/7 of UES-P. Mitotic index varied in different regions of one tumor from rare to high. Multi-differentiation was also commonly seen in ESS. The numbers of cases in LGESS, UES-U and UES-P were 39, 9 and 7, with recurrence rate of 51.6% (16/31), 5/6 and 2/3, respectively. There was no death case in LGESS, and 2 cases were died in UES-U and UES-P, respectively. In the 2 death cases of UES-U, both had focus of UES-P. There was a significant difference in the recurrence rate between cases with different mitotic index (≥ 10/10 HPF and < 10/10 HPF, P = 0.009), especially in LGESS group. All death cases had high mitotic index (> 30/10 HPF).

CONCLUSIONSIt is a common phenomenon in ESS that two or three pathologic types may exist in one case, especially in UES-U and UES-P. And multi-differentiation is also commonly seen in ESS. So adequate pathologic sampling is important for pathologists to make a correct diagnosis of ESS in daily work. The recurrence rates are significantly higher in cases with high mitotic index, especially in LGESS. In addition, the presence of UES-P and high mitotic index may increase the risk of death in the patients.

Adult ; Aged ; Aged, 80 and over ; Cell Differentiation ; Endometrial Neoplasms ; classification ; pathology ; surgery ; Endometrial Stromal Tumors ; pathology ; surgery ; Female ; Follow-Up Studies ; Humans ; Hysterectomy ; Middle Aged ; Mitotic Index ; Neoplasm Recurrence, Local ; Sarcoma, Endometrial Stromal ; classification ; pathology ; surgery ; Survival Rate ; Young Adult

Objective To investigate the clinical significance in MRP1/CD_9 expression in cervical squamous cancer tissues and normal cervical tissues.Methods The expression of MRP1/CD_9 were assayed by SABC immunohistochemical methods in 53 cases of cervical cancer tissues and 13 cases of normal cervical tissues.Results Positive expression of MRP1/CD_9 was detected in 13 normal cervical tissue.MRP1/D_9 ex- pression is down-regulated in cervical carcinoma(P

OBJECTIVETo testify the effect of the stem cells derived from the widely distributed fat tissue on repairing full-thickness hyaline cartilage defects.

METHODSAdipose-derived stem cells (ADSCs) were derived from adipose tissue and cultured in vitro. Twenty-seven New Zealand white rabbits were divided into three groups randomly. The cultured ADSCs mixed with calcium alginate gel were used to fill the full-thickness hyaline cartilage defects created at the patellafemoral joint, and the defects repaired with gel or without treatment served as control groups. After 4, 8 and 12 weeks, the reconstructed tissue was evaluated macroscopically and microscopically. Histological analysis and qualitative scoring were also performed to detect the outcome.

RESULTSFull thickness hyaline cartilage defects were repaired completely with ADSCs-derived tissue. The result was better in ADSCs group than the control ones. The microstructure of reconstructed tissue with ADSCs was similar to that of hyaline cartilage and contained more cells and regular matrix fibers, being better than other groups. Plenty of collagen fibers around cells could be seen under transmission electron microscopy. Statistical analysis revealed a significant difference in comparison with other groups at each time point (t equal to 4.360, P less than 0.01).

CONCLUSIONThese results indicate that stem cells derived from mature adipose without induction possess the ability to repair cartilage defects.

Adipose Tissue ; cytology ; Alginates ; Animals ; Cartilage, Articular ; injuries ; surgery ; Cells, Cultured ; Glucuronic Acid ; Hexuronic Acids ; Mesenchymal Stromal Cells ; physiology ; Rabbits ; Tissue Engineering

OBJECTIVETo investigate the height of interdental papillae around single-tooth implants in the anterior maxillae after exposure of implant using crestal rotated flap.

METHODSThe study comprised 34 implants in the anterior maxillae from 32 patients. All implants were uncovered by use of crestal rotated flap technique. Impressions were taken before and after stage 2 surgery, and stone models were used to evaluate the change of papillae height. The gingival papillae index around single-tooth implants was compared before and after the surgery.

RESULTSThe average increase in papillae height was (0.77 +/- 0.25) mm, which was statistically significant with analysis of a paired t test (P < 0.05). The change of gingival papillae index showed no significant difference using statistical analysis of rank sum test (P > 0.05). The lower the gingival papillae index was before the surgery, the less the papillae height increased after the surgery.

CONCLUSIONSThe main advantages of the crestal rotated flap technique are simplicity and predictability, and it consistently provides high papillae for the maxillary implants.

Adult ; Alveolar Process ; transplantation ; Dental Implants, Single-Tooth ; Esthetics, Dental ; Female ; Humans ; Male ; Middle Aged ; Periosteum ; transplantation ; Prospective Studies ; Surgical Flaps ; Young Adult

OBJECTIVETo observe the effect of Bawei Xilei powder on CD3, CD4, CD8 T-lymphocytes in peripheral blood and colonic mucosa of rat with ulcerative colitis.

METHODSixty SD rats were randomly divided into 6 groups, normal group, model group, low, middle and high dosage Bawei Xilei powder group, Sulfasalazine group. Ulcerative colitis was induced by immunization with rabbit 's colonic mucous emulsified with completely Freund's adjuvant in all rats. Rats in low, middle and high dosage Bawei Xilei powder group were administered with 0.05, 0.1, 0.2 mg Bawei Xilei powder for 18 days by enema respectively. While rats in Sulfasalazine group were enema administered with 100 mg Sulfasalazine, and the rats in other group were administered with equal volume of saline enema as control. We analyzed expression of CD3, CD4, CD8 T-lymphocytes in peripheral blood by flow cytometry and in colonic mucous by immunohistochemistry.

RESULTIn peripheral blood, compared with normal group, in model group, the increased of CD4 T-lymphocytes and CD4 /CD8 ratio, the reduced of CD8 T-lymphocytes, these results were significant discrepancy (P < 0.01). Compared with model group, after treatment with Bawei Xilei powder, CD8 T-lymphocytes increased, but only high dosage Bawei Xilei powder group had discrepancy (P < 0.05). But low dosage Bawei Xilei powder group, other treatment groups' rats showed CD4/CD8 ratio were reduced significantly (P < 0.05). In colonic mucous, compared with normal group, in model group, Rats showed that expression of CD3, CD4 T-lymphocytes reduced and CD8 T-lymphocytes increased obviously (P < 0.05, P < 0.01). Compared with model group, expression of CD8 T-lymphocytes reduced significantly in all treatment groups (P < 0.05, P < 0.01).

CONCLUSIONBawei Xilei powder may regulate their balance between T-lymphocytes subgroup, consequently relieve inflammatory injury in favor of ulcer reparation and tissue regeneration.

Animals ; CD3 Complex ; metabolism ; CD4 Antigens ; metabolism ; CD8 Antigens ; metabolism ; Colitis, Ulcerative ; immunology ; metabolism ; Colon ; drug effects ; metabolism ; pathology ; Dose-Response Relationship, Drug ; Drugs, Chinese Herbal ; pharmacology ; Gene Expression Regulation ; drug effects ; Powders ; Rats ; T-Lymphocytes ; drug effects ; metabolism

OBJECTIVETo investigate the effectiveness of injectable tissue engineering to repair full-thickness meniscal defects.

METHODSFrom June 2008 to February 2009 full-thickness of meniscal defects were created in the anterior corner of goats, which with no blood supply, in a diameter of 2 mm. Then bone marrow stem cells (BMSCs) was mixed with injectable calcium alginate gel to fill the defects. Other groups include the calcium alginate gel and empty group were served as control groups. At different time points, the animals were sacrificed and macroscopy, microscopy determination, electroscopy and MRI detection were performed to assess the outcomes of repairing.

RESULTSThe meniscal defects had been filled thoroughly in 16 weeks after operation with white, tough and elastic repair tissue similar to normal meniscal fibrocartilage in the tissue engineering groups. The repair tissue was mainly fibrochondrocytes in line with the calcium alginate fiber. Thick matrix secreted by the cells crammed the space between fibers. The view under electroscopy demonstrated that the microstructure of the repair tissue was normal and cells were in a fibrocartilage phenotype.

CONCLUSIONThe full-thickness meniscal defects in regions without blood supply can be reconstructed effectively with injectable tissue engineering.

Alginates ; Animals ; Bone Marrow Cells ; Cells, Cultured ; Disease Models, Animal ; Gels ; Glucuronic Acid ; Goats ; Hexuronic Acids ; Injections ; Male ; Stem Cells ; Tibial Meniscus Injuries ; Tissue Engineering ; methods ; Tissue Scaffolds

OBJECTIVETo explore the effects of intrathecal injection of mitogen-activated protein kinases inhibitors U0126 on the behavioral changes of morphine-induced dependent and withdrawal rats and the expression of nitric oxide synthase (NOS) in spinal cord.

METHODSAll the rats were divided into 4 groups: control group, dependent group, withdrawal group, U0126 group (5 microg). Global withdrawal score, Touch evoked agitation scores (TEA score), immunohistochemical and Western blot technique were undertaken to evaluate behavioral changes and expression of FOS, nNOS and iNOS in spinal cord respectively.

RESULTSThe results showed that intrathecal administration of U0126 significantly alleviated withdrawal symptom, withdrawal scores of U0126 group (22.5 +/- 4.09) were significantly lower than than those of withdrawal group (28.6 +/- 4.89) (P < 0.05). TEA scores of withdrawal group were 13.5 +/- 2.55, which were significantly higher than those of U0126 group (10.0 +/- 2.76, P < 0.05). Fos-like positive neurons in dorsal horn of withdrawal group were 380 +/- 71, which were higher than those of U0126 group(287 +/- 54, P < 0.05). Also nNOS and iNOS positive neurons in dorsal horn of U0126 group were 180 +/- 32, 10.8 +/- 2.8 respectively, which were significantly lower than that of withdrawal group (239 +/- 45, 16.8 +/- 5.1, P < 0.05). Compared with withdrawal group, levels of nNOS and iNOS protein in spinal cord of U0126 group were significantly lower.

CONCLUSIONMEK inhibitors could alleviate withdrawal symptom of morphine-induced dependent rats and could suppress expression of NOS in spinal cord, and extracellular signal-regulate kinase (ERK) might involve the expression of NOS in spinal cord.

Animals ; Behavior, Animal ; drug effects ; Butadienes ; pharmacology ; Enzyme Inhibitors ; pharmacology ; Extracellular Signal-Regulated MAP Kinases ; metabolism ; Male ; Mitogen-Activated Protein Kinases ; antagonists & inhibitors ; Morphine ; adverse effects ; Morphine Dependence ; metabolism ; Nitric Oxide Synthase ; metabolism ; Nitriles ; pharmacology ; Rats ; Rats, Sprague-Dawley ; Spinal Cord ; metabolism ; Substance Withdrawal Syndrome ; metabolism

Objective To probe into the characteristics of traumatic effect of blast underpressure (BUP) on tympanic membrane and ossicular chain of guinea pigs exposed to blast underpressure. Methods The guinea pigs were exposed to experimental BUP generated by the underpressure generator and their tympanic membranes and auditory ossicules were observed with stereo-microscope.Results Most of the tympanic membranes in 72 guinea pigs (141 ears) presented with traumatic changes,such as engorgement,haemorrhage,epidermic desquamation and perforation,combined with fracture of ossicles in some guinea pigs.The traumatic severity of the tympanic membranes and auditory ossicules was related to the peak and the declinating duration of BUP.The minimum peak of the underpressure inducing perfo- ration was between-22.4kPa and-23.9kPa and the minimum peak inducing perforation of all the tym- panic membranes was between-83.1kPa and-87.2kPa.Conclusion The tympanic membrane in guinea pigs exposed to BUP changed traumatically,such as engorgement,haemorrhage,epidermic des- quamation,perforation and fracture of ossicles.The traumatic severity of the tympanic membranes and au- ditory ossicules is related to the peak and declinating duration of BUP.

OBJECTIVETo explore if induced nitric oxide in the spinal cord mediates withdrawal syndrome in morphine-dependent rats.

METHODSMale SD rats weighing 200-250 g were employed in the present study. To set up morphine dependence model, rats were subcutaneously injected with morphine (twice a day, for 5 d). The dose of morphine was 10 mg/kg in the first day and was increased by 10 mg/kg each day. On day 6, 4 h after the injection of morphine (50 mg/kg), morphine withdrawal syndrome was precipitated by an injection of naloxone (4 mg/kg, ip). Inducible nitric oxide synthase (iNOS) inhibitors aminoguanidine (AG) was intrathecally injected 30 min before the administration of naloxone. All the rats were divided into four groups: control group, dependence group, withdrawal group, AG group. Morphine withdrawal score, touch evoked agitation scores (TEA scores), immunohistochemical and Western blot technique were used to evaluate morphine withdrawal response and the expression of iNOS in the spinal cord.

RESULTSIntrathecal injection of iNOS inhibitors AG could alleviate morphine withdrawal symptoms. Morphine withdrawal scores and touch evoked agitation scores in AG group were significantly lower than that of withdrawal group (P < 0.05). iNOS positive neurons in dorsal horn of AG group were significantly lower than that of withdrawal group (P < 0.05). Level of iNOS protein in spinal cord of AG group was significantly lower than that of withdrawal group (P < 0.05).

CONCLUSIONInduced nitric oxide in the spinal cord may mediate withdrawal syndrome in morphine-dependent rats.

Animals ; Male ; Morphine Dependence ; metabolism ; Naloxone ; pharmacology ; Nitric Oxide Synthase Type II ; metabolism ; Rats ; Rats, Sprague-Dawley ; Spinal Cord ; metabolism ; Substance Withdrawal Syndrome ; metabolism