2.Influence of dose distribution selected from different beam orientation for a nasopharyngeal carcinoma IMRT plan
Feng XIAO ; Mei SHI ; Hui SONG
China Oncology 2000;0(06):-
Purpose:To evaluate the different dose distribution created by three different plans on a nasopharyngeal carcinoma case with simultaneous integrated boost intensity modulated radiation therapy (SIB-IMRT). Methods:we designed three different SIB-IMRT plans on a nasopharyngeal carcinoma case, one was from anterior direction of the head, 5 non-equally spaced fields, another was from posterior direction of the head, 5 non-equally spaced fields also, third was 5 equally spaced fields around the head. Each plan had its dose distribution to the target and main critical structures.Results:No significant difference of dose distribution to the target when comparing the previous three different IMRT plans. However, dose to the parotids delivered from 5-equally spacd was obviously lower than the other plans, dose to the optic chiasm was much lower created by the plan designed from the posterior direction of the head with 5 non-equally spacea field.Conclusions:For a nasopharyngeal carcinoma case, there is no significant difference of dose distribution to the target compared with three different 5-beam orientation SIB-IMRT plans. To protect parotids, we recommend designing a plan with equal beam direction around the head. When the target is very close to the optic chiasm, plauning from posterior direction of the head should be better.
3.Administration of sirolimus affects vein graft neointima hyperplasia
Feng XIAO ; Lufeng ZHANG ; Zhihui SHI
Journal of Peking University(Health Sciences) 2003;0(05):-
Objective: To investigate the effect of Sirolimus on vein graft neointima hyperplasia via oral administration compared with local delivery, and find out an effective and safe way to provide support for clinical application. Methods: A rabbit external jugular vein-to-common carotid artery model was established. Twenty-four healthy rabbits were divided into 4 groups at random: blank-control group, F-127 control group, group 3 that received locally applied slow-releasing Sirolimus with F-127, group 4 that received oral Sirolimus (the commercial name Rapamune). The ratio of intima to medium thickness and re-stenosis rate (ratio of lumina to lumina plus intima area) were measured, PCNA positive cells by immunohistochemical staining were detected to indicate the degree of cell proliferation, and apoptosis cells detected by TUNEL. Results: Compared with blank-control group, neointima hyperplasia was inhibited significantly in group 3 and group 4 intima thickness were (90.11?10.99)?m versus (29.38?10.45) ?m, (18.29?9.03)?m, respectively. Re-stenosis rate was reduced (lumina area/ total area ratio were 0. 58?0.11 versus 0.80?0.16, 0.77?0.16, respectively). Proliferation of VSMC was inhibited (cell proliferation indexes were 31.03%?6.80% versus 20.32%?9.19%, 16.22%?5.85%, respectively) and cell apoptosis level raised (cell apoptosis indexes were 16.27%?6.49% versus 33.39%? 7.05%, 33.42%?7.11%, respectively). There was no significant difference between group 3 and group 4. Conclusion: Both locally applied slow-releasing Sirolimus and oral Rapamune could inhibit vein graft neointima hyperplasia; Administration via local delivery was preferred for little side-effect on the whole body. This conclusion provides support for clinical application.
5.Advances in multiviscerai transplantation and experience of postoperative management
Shi-Kun QIAN ; Xiao-Shun HE ; Xiao-Feng ZHU ;
Chinese Journal of Organ Transplantation 2005;0(10):-
Objective To discuss the advance and experience of postoperative management in multivisceral transplantation(MVT).Methods Five patients with abdominal multiple organs malig- nances were subjected to multivisceral transplantation.The excised specimens included the liver,pan- creas,duodenum,stomach,spleen,mesentery and all of the involved lymph nodes.The transplanted organs were liver,pancreas,duodenum and parts of intestine.Patients were monitored and sustained stably in breath,hemodynamics and homoeostasis.The coagulation was also monitored and kept in balance.The intensive immunosuppressive protocol,including steroid,tacrolimus,mycophenolate mofetil and Zenapax,was used to prevent the acute rejection.The endocrine and exocrine of pancreas were tested,color Doppler examination was done every day,and Somatostatin was used to prevent pancreatitis.Drugs to bacteria,fungus and virus infection were prophylactically used.Results All patients waked up with 4-6 h after operation and began recovering with 3-7 days.Dynamic examina- tions revealed that the functions of grafted liver,pancreas and duodenum were satisfactory.No com- plications of acute rejection,pancreatitis,bleeding and thrombosis occurred.Conclusion Many ques- tions in postoperative management related to multivisceral transplantation are devoted to study.Nice experience of management to organ transplantation,detailed monitoring and prophylactically medica- tions are safeguards to steady recovering and further prognosis.
7.Relationship between CD117 expression and chemotherapy effect on the patients with acute nonlymphoblastic leukemia
Hao SHI ; Feng ZHU ; Aiqin XIAO ; Zhirong ZHANG ; Keqiang WANG
China Oncology 2001;0(03):-
Background and Purpose:It has been proved that CD117 may be used as an immunology marker for diagnosis of leukemia of myeloid origin.The relationship between CD117 expression and effect of chemotherapy on the patients with Acute Nonlymphoblastic Leukemia(ANLL) remains unclear.This study is to investigate the relationship between CD117 expression and the response of patients with ANLL to chemotherapy.Methods:Flow cytometery(FCM) was used to detect the positive rate and the levels of CD117 expression of the bone marrow mononuclear cell(BMMNC) from 38 patients with acute lymphoblastic leukemia(ALL) and 81 patients with ANLL,respectively.All-trans Retinoic Acid(ATRA) was taken to treat M_(3) type of ANLL and protocol DA and/or HA was used to treat the other types.ANLL was divided into two groups: positive(+) and negative(-) expression of CD117.At the same time we compared the difference of rates of complete remission(CR) between CD117(+) and CD117(-) groups from ANLL after chemotherapy.Results:Positive percentage of expression of CD117 in ALL and ANLL groups were 13% and 70% respectively(P=0.000).Positive levels of CD117 decreased successively as follows: M_(3)/ M_(1)、M_(2)/ M_(6) / M_(4)、M_(5).CR rates of CD117(+) and CD117(-) groups of ANLL after chemotherapy were 51%(29/57) and 67%(16/24)(P=0.192),respectively.Conclusions:CD117 may serve as an immunology marker for the diagnosis of ANLL,but positive or negative expression of CD117 in ANLL was not associated with the response of the patients with ANLL to chemotherapy.
8.Case report and review of a girl with factor VIII deficiency making epistaxis.
Xiao FENG ; Baoyuan SHI ; Lin JI
Journal of Clinical Otorhinolaryngology Head and Neck Surgery 2013;27(5):277-278
The factor VIII gene is located on the X chromosome,making haemophilia A, a sex-linked disorder. Thus on pedigree grounds all daughters of such patients are obligate carriers. One female case of haemophilia A was reported and related literatures were reviewed.
Child
;
Chromosomes, Human, X
;
Epistaxis
;
etiology
;
genetics
;
Factor VIII
;
Female
;
Hemophilia A
;
complications
;
genetics
;
Humans
9.Clinical study of the effect of actovegin in the prevention of acute irradiation oropharyngeal mucositis
Xuecheng ZHANG ; Feng XIAO ; Lichun WEI ; Yong ZHU ; Mei SHI
Journal of Practical Stomatology 1995;0(04):-
0.05). Regarding to the grade of irradiation mucositis, the majority of patients in the treatment group were at stage Ⅰ-Ⅱ,while those in the control at stage Ⅲ-Ⅳ(P0.05).No adverse drug reaction was observed in both groups during irradiation process.Conclusion:Actovegin can postpone the development of irradiation oropharyngeal mucositis and decrease the incidence of gradeⅢ and Ⅳmucositis.
10.Urodynamic study of lower urinary tract function after radical hysterectomy in postoperative women of cervical cancer
Hui-Rong SHI ; Xiao-Feng YANG ; Jian-Guo WEN ;
Chinese Journal of Obstetrics and Gynecology 2000;0(12):-
Objective To investigate the characteristics of the preoperative and postoperative urodynamical parameters of women with uterine cervical carcinoma after radical hysterectomies.Methods Forty-six women had uterine cervical carcinoma at stage Ⅰ b or Ⅱ a.Complete pre-and postoperative urodynamie follow-ups were conducted for each patient.Results Twenty-six women(57%)who had preoperatively normal urinary tract function needed to void by abdominal straining after radical surgery.After the radical hysterectomy,the postvoid residual volume[(205?201)vs(5?3)ml,P