Primary CNS lymphoma (PCNSL) is a rare malignancy with peculiar clinical and biologic features,aggressive course,and unsatisfactory outcome.the particular microenvironment of this malignancy,and sanctuary sites where tumor cells grow undisturbed, strongly affects treatment efficacy. The execution of prospective trials is also difficult because of the rarity of the tumor and the impaired general condition and poor performance status of patients. Chemotherapy is indispensable for the treatment of PCNSL. High-dose methotrexate is the most effctive drug.PCNSL is sensitive to irradiation,but responses to radiotherapy alone are short-lived. MTX-based chemotherapy followed by whole-brain radiotherapy prolonged survival but is associated with delayed neurotoxicity especially in patients older than 60 years. A new approach is attempted to treat PCNSL with chemotherapy alone with defered radiotherapy in old patients with similar survival rencenfly. High-dose chemotherapy with autologous stem cell transplantation HDC/ASCT yielded promising results for recurent PCNSL.Clinical investigation with Temozolomide or rituximab have been reported.Further studies with these new drugs are needed.

Objective: To investigate the expression of Notch1 and NF-κB in gastric cancer and discuss the association between the expressions of both and their relationship with the clinicopathological features. Methods: The expression of Notch1 and NF-κB in 168 specimens of gastric cancer and 27 specimens of normal gastric tissues were detected by SP immunohistochemistry. Results: The expression of Notch1 was significantly upregulated in gastric cancer as compared with normal gastric tissues (P < 0.0 1). It was closely related with tumor size, differentiation grade, depth of invasion, and vessel invasion. The expression of NF-κB in gastric cancer was remarkably higher than that in control group (P < 0.01) and was significantly associated with tumor size, differentiation degree, depth of invasion, distant metastasis, and vessel invasion. Kaplan-Meier analysis showed that Notch1- and NF-KB positive patients had poor prognosis than Notch1- and NF-κB-negative patients. Cox regression multivariate analysis showed that Notch1 was one of the independent prognostic factors for gastric cancer (P <0.05). Conclusion: The over-expression of NF-κB may be involved in the carcinogenesis and progression of gastric cancer mediated by Notch1 signaling pathway. Notch1 may become a potentially useful marker for evaluating the prognosis and survival of gastric cancer and a new therapeutic target.

Objective Cavernous hemangioma of infant was reported as an obscure diagnosis with the different sensitivity to corticosteroid therapy and various natural courses. Therefore, a clinical studies for the biological classification of deep subcutanious vascular lesions might be needed, which was alluded by Mulliken two decades ago. Methods Infants with cavernous hemangiomas accepted normal system corticosteroid therapy during the first 6 months of life before eight-year-follow-up, which continued until the children were 9 to 10 years old. The expression of PCNA and bFGF, and cellular histological characteristics were observed in 12 cases by biopsy. Results There were two major categories of subcutaneous vascular lesions groups: deep capillary hemangiomas, a lesion regressing slowly, and venous malformation, a lesion growing commensurated with the child. They will be also distinguished on the basis of diverse final treatment results, expression of cellular markers, microscopical characteristics, and physical signs. Conclusion The new classification appears to be helpful to make the choice of therapy for infants with "cavernous hemangiomas" , which is proven to be a terminologic confusion.

Trypanosoma is a human parasite severely affecting poor tropical areas.However,current frontline drugs for Trypanosoma treatment have severe side-effects with decreased effectiveness.Based on the fact that aminoacyl-tRNA synthetase is a bonafide drug target for several microorganisms,including bacteria and fungi,it is plausible that it may also be effective target of Trypanosoma.The Trypanosoma brucei leucyl-tRNA synthetase(tbLeuRS)was cloned,expressed and purified to develop an in vitro enzymatic assay system.The assay conditions were further optimized for the effective screening of tbLeuRS inhibitors thus establishing an anti-Trypanosoma drug screening system targeting tbLeuRS.The results indicated that this system can be employed for the effective screening of anti-Trypanosoma drugs with satisfactory specificity.In addition,this system can also be used for compound optimization,as well as IC50 testing.Using this system a series of compounds are identified that are effective Trypanosoma inhibitors without toxicity to human cells.Therefore,targeting tbLeuRS may represent a new venue for the development of anti-Trypanosoma drugs.

Objective To investigate the compliance with endocrine therapy(ET) and assess the factors associated with treatment accuracy for breast cancer.Methods 379 patients with hormone receptor-positive breast cancer undergoing complete treatment from Jun.2006 to Jun.2008 in Jiangsu Cancer Hospital were followed up.Factors related to compliance were analyzed.Results Among the 322 (85.0％) patients successfully interviewed,15 (4.7％) patients did not receive ET,43 (13.4％) patients stopped taking drugs after discharge,14 (4.3％)patients had intermittent ET,and the rest 250 patients obeyed 5-year oral ET regularly.The treatment accuracy was 77.6％ (250/332).We found that majority of withdraw occurred within 2 months and within 2 years,accounting for 39.5％ and 48.8％,respectively.Job and education status were relevant to these patients.Moreover,too much concern of adverse drug effects and difficulty of long-term medication were the main reasons to noncompliance.Conclusions ET is effective in hormone receptor-positive breast cancer patients and has been used as a conventional therapy.However,due to the long therapeutic period and lack of medical supervision after discharge,its treatment accuracy and compliances are becoming low,resulting in decreased efficiency.It is therefore necessary to investigate such patients' management to improve the compliance and treatment accuracy of ET.

Adenocarcinoma ; diagnosis ; surgery ; Aged ; Humans ; Male ; Treatment Outcome ; Ureteral Neoplasms ; diagnosis ; surgery

OBJECTIVETo analyze the clinical characteristics of elderly patients with spinal tuberculosis and explore its clinical effects with anti-TB drugs alone.

METHODSFrom January 2008 to July 2010, the data of 36 patients with spinal tuberculosis underwent conservative treatment of anti-TB drugs alone were analyzed. There were 19 males and 17 females with an average age of 73.5 years (ranged, 60 to 85). All patients were in the active phase with high ESR and CRP levels and were treated with 3HRZE/6-9HRE (course from 9 to 12 months). According to clinical symptoms, chemical examination, radiological image to adjust drug and depending on VAS score to evaluate pain.

RESULTSAll the patients were followed up from 8 to 24 months with an average of 15 months. Tuberculose of 31 patients healed after chemotherapy from 9 to 12 months and ESR and CRP recovered normally. Levofloxacin and para-amino salicylic acid were used in 4 cases because of 4 cases occurred drug fast for RFP or INH, after 15 months, their obtained healing. Symptom of 1 case got worse during chemotherapy, and surgical treatment were performed, after 3 months, ESR and CRP recovered normally, X-ray and CT showed spinal osteosclerosis and fusion without significant kyphosis and internal fixation loosening. Cobb angle was respectively(17.6+/-2.3) degrees, (18.1+/-2.7) degrees before treatment and last follow-up (P>0.05). MRI showed abscess was absorbed and spinal inflammation subsidised. VAS score was respectively 6.5+/-1.7, 1.4+/-0.5 before treatment and last follow-up (P<0.05). Seven patients had complications relating with drug adverse reaction,after discontinuation and treated with clinical symptom,the patients recovered normally.

CONCLUSIONAnti-TB drugs alone can obtain satisfactory effects in treating early senile spinal tuberculosis, but strict supervision and individual administration should not be disregardful.

Aged ; Aged, 80 and over ; Antitubercular Agents ; therapeutic use ; Female ; Humans ; Male ; Middle Aged ; Tuberculosis, Spinal ; diagnosis ; drug therapy

Whether transforming growth factor-beta2 (TGF-beta2) induces apoptosis of human trabecular meshwork cells was investigated in vitro. Cultured 3-5 passage human trabecular meshwork cells were treated with 0 (control), 0.32, 1, 3.2 ng/ml TGF-beta2 for 48 h and divided into control group and experimental group. The apoptosis of human trabecular meshwork cells was examined by transmission electron microscopy, TUNEL technique and flow cytometry. The results showed characteristic morphologic changes of apoptotic cells were observed under transmission electron microscopy. DNA fragmentation of human trabecular meshwork cells was found by TUNEL technique. Quantitative analysis of flow cytometry showed that percentages of apoptotic human trabecular meshwork cells were (2.79 +/- 0.44)%, (4.43 +/- 1.17)% and (9.60 +/- 2.05)% respectively with different concentrations [1 ng/ml (P<0.05), 3.2 ng/ml (P<0.01)] of TGF-beta2 with the difference being significant between experimental group and control group [(1.41 +/- 0.34)%]. It was concluded that TGF-beta2 can induce apoptosis of human trabecular meshwork cells in vitro and may be involved in the decrease of trabecular meshwork cells in the patients with primary open angle glaucoma and aging of normal people.
Apoptosis/*drug effects ; Cells, Cultured ; Trabecular Meshwork/*cytology ; Transforming Growth Factor beta/*pharmacology ; Transforming Growth Factor beta2

Whether cultured bovine trabecular meshwork cells and trabecular tissue ex vivo express insulin-like growth factor-I (IGF-I) messenger RNA (mRNA) and protein was investigated. Total RNA of cultured bovine trabecular meshwork cells as well as trabecular meshwork tissue freshly excised from bovine eyes was extracted, and reverse transcriptase-polymerase chain reaction (RT-PCR) was used to detect IGF-I mRNA. RT-PCR product was verified by sequencing. Immunohistochemical stain was used to detect IGF-I protein. The results showed that a single PCR amplified product was obtained, and the sequence was homologous to the known sequence.. IGF-I immunostain was positive in the cytoplasm of trabecular meshwork cells. It was concluded that trabecular meshwork cells produce IGF-I and contribute to the presence of IGF-I in trabecular meshwork microenvironment as well as aqueous humor. Trabecular meshwork cells were affected by IGF-I not only through paracrine, but also autocrine action. Whether abnormal down-regulations in IGF-I production may contribute to the pathogenesis of primary open-angle glaucoma and the possibility of promoting the autocrine action of IGF-I by trabecular meshwork cells to treat the disease is worth further investigation.
Cells, Cultured ; Cloning, Molecular ; Glaucoma, Open-Angle/etiology ; Glaucoma, Open-Angle/metabolism ; Insulin-Like Growth Factor I/biosynthesis ; Insulin-Like Growth Factor I/*genetics ; RNA, Messenger/biosynthesis ; RNA, Messenger/genetics ; Reverse Transcriptase Polymerase Chain Reaction ; Sequence Analysis, DNA ; Trabecular Meshwork/cytology ; Trabecular Meshwork/*metabolism