Head and Neck Neoplasms ; pathology ; Humans ; Male ; Middle Aged ; Neurilemmoma ; pathology ; Neurofibroma ; pathology ; Scalp ; pathology

Hyperthermia is a means of adjuvant therapy, which have a sensitizing effect to radiotherapy and chemotherapy. In recent years, the molecular biology, cell and animal experimental research of tumor thermochemotherapy progressed very quickly, which provide theoretical foundation and guidance for us to further develop hyperthermia combined with chemotherapy in clinical trials. In this paper, the studies with the mechanism of thermo-chemotherapy treatment of tumor, different ways of thermochemotherapy and commonly used drugs in thermochemotherapy are reviewed.

Objective To evaluate the effect of continuous adenosine infusion on mesentery microcirculation during cardiopulmonary resuscitation in rats with asphyxia. Methods Rat model of asphyxia was established in 22 healthy Wistar rats. The animals were then randomly divided into normal saline group (group A, n=10), epinephrine group (group B, n=6) and epinephrine plus adenosine group (group C, n=6). After a 3-min asphyxia without intervention, cardiopulmonary resuscitation (CPR) was started. The cardiac compression was carried out with an electric cardio-pulmonary resuscitation machine (200 times/min). Respiration was restored and maintained with a ventilator with tidal volume of 4ml, breathing rate 50times/min and FiO2 100%. After a 4-min CPR, rats in group A and group B were given normal saline and epinephrine (bolus of 90?g/kg) respectively, and in group C epinephrine (bolus of 90?g/kg) plus 70?g/kg adenosine were given. Electric defibrillation would be initiated if there was ventricular fibrillation. The reperfusion rate of mesentery arterioles and venules, diameter of blood vessels and relative blood velocity were observed. Results The reperfusion rate of mesentery arterioles and venules was significantly higher in group C than in group B (P

BACKGROUND:The pathogenesis of steroid-induced osteonecrosis of the femoral head remains unclear. Femoral head reconstruction after colapse is related to the bone remodeling due to disorder of the bone formation-absorption coupling. “Removing Blood Stasis” Method has been shown to have a positive effect on the disease in clinics. However, the mechanisms by which the “Removing Blood Stasis” Method confers bone repair after osteonecrosis remain poorly understood.
OBJECTIVE:To explore the effect of “Removing Blood Stasis” Method on bone repair in rabbits with steroid-induced femoral head osteonecrosis.
METHODS: Fifty New Zealand rabbits were randomly assigned into three groups: normal control (n=10),
model (n=20) andTaohong Siwu Decoction (n=20) groups, respectively. The steroid-induced osteonecrosis of the femoral head animal models were established by intramuscular injection of endotoxin combined with methylprednisolone (MPS). Rabbits inTaohong Siwu Decoction group were intragastricaly administered with 0.3 g/kg ofTaohong Siwu Decoction suspension after the last injection of methylprednisolone. The control and model groups were administrated by equal volume of ultrapure water for 8 consecutive weeks. High-resolution MRI and pathological determinations were used to assess the successful models. Protein expression levels of ABCB1, RUNX2, OPN, RANK, RANKL, PPAR, osteoprotegerin (OPG), vascular endothelial growth factor (VEGF) in rabbit femoral heads were detected by western blot assay.
RESULTS AND CONCLUSION:(1) Hematoxylin-eosin staining showed that trabecular bone fracture, karyopyknosis, empty lacunae, necrotic bone marrow cels were seen in the model group. Empty lacunae rate in the model group was significantly different from that in the normal control group (P < 0.05). Bone formation was active and kept better trabecular morphology in theTaohong Siwu Decoction group. It suggested that “Removing Blood Stasis” Method can improve repair of necrotic area. (2) In the model group, femoral head with a wide range of low-density areas in high-resolution MRI;Taohong Siwu Decoction group showed the relatively normal shape of the femoral head with smal areas of low density. It suggested that “Removing Blood Stasis” Method can improve image changes in the necrotic area. (3) Protein expression levels of RUNX2, RANK, RANKL were significantly up-regulated but protein expression levels of ABCB1, OPG, VEGF were significantly down-regulated in the model group compared with the normal control group; whereas, they were al significantly up-regulated in theTaohong Siwu Decoction group compared with the model group, except for RANK and RANKL (P < 0.05). These results suggest that the “Removing Blood Stasis” Method can promote bone repair in steroid-induced femoral head osteonecrosis rabbits by regulating protein expressions of ABCB1, RUNX2, RANK, RANKL, OPG, and VEGF.

Plant samples were collected and investigated periodically. According to the growth of different parts and the characteristics of dry substance accumulation of Scrophularia ningpoensis, the development of S. ningpoensis could be divided into four stages: seeding stage, stem and leaf growth stage, expanding period of root tubers, and dry substance accumulation stage of root tuber. Leaf numbers of S. ningpoensis grew gradually from one at first to 370 at the final stage, main stem leaf were 50 pieces. Leaf size increasesed with the fastest growth at the stem and leaf growth stage, average daily increase amount was 225 cm2. By the middle of August, leaf size reached to 16,270 cm2. Leaf area indexrose sharply in the seeding stage, and remained above 8 among stem and leaf growth stage and expanding period of root tubers, and rapidly reduced to zero in the stage of dry substance accumulation of root tuber. Leaf area ratio has a tendency of obvious dropping. The net assimilation rate had a small change ranges, two small peak were seeding stage and dry substance accumulation of root tuber. The value of specific leaf area was higher in seeding stage, and in the earlier stage of dry substance accumulation of root tuber. Relative growth rate changed with large ranges, higher in seeding stage, rapid decrease in stem and leaf growth stage, rose in expanding period of root tubers, and declined again in the stage of dry substance accumulation of root tuber. Crop growth rate was higher in the first and last stages, and smaller in interim stage. The growth parameters of S. ningpoensis such as relative growth rate, net assimilation rate, leaf area index, leaf area ratio, specific leaf area, crop growth rate changed along with the growth. The rule of dry matter accumulation was as follows: the dry matter increased slowly during the seeding stage and speeded up in the middle and late stages, and in dry substance accumulation of root tuber increased slower, the growth of dry matter all appeared an "S" curve, and accorded with logistic equation. Cultivation technologies of S. ningpoensis and the relevant management methods could be established according to the growth of different parts of S. ningpoensis and the characteristics of dry substance accumulation in different stage.
China ; Conservation of Natural Resources ; Plant Leaves ; growth & development ; Plant Roots ; growth & development ; Plant Stems ; growth & development ; Plant Tubers ; growth & development ; Scrophularia ; growth & development

Objective To evaluate the role of standard CPR training in Beijing Olympics medical volunteers by compared with the no-traimng medical personnel.Method Performance qualities of CPR was evaluated in the 44 medical vohmteers,who worked in a Beijing Olympic Venue.They received the training On standard CPR for 6 monthes,and served as training group.The performance of another 72 emergency medical workers from first-class hospitals without the training on stand CPR within 1 year(control group) Was compared with training group.Phillips QCPR3535 monitor was used to measure the compression frequency,depth and chest re-expand between the compression and the operation time via the sternal chest compression pad fitted with an accelerometer.Personal practical results of 5 circles of CPR operation were recorded in a table and the numbers ofpractical. Compression in one minute were counted.Data Were analyzed with chi-quare test and t-test.The parameters ofthe influence fac.tor(gender,age,hand placement,hand skill,compression posture and standard training)were brought into logistic regression analysis.Results Compared with the control group,the qualification rate of general CPR performance in the training group was much higher(86.4%vs.31.9%),and the compression cpmlification rates of the chestcompression,depth and chest re-palld betweenthe compression wcfe higher(88.6%,93.2%,95.5% vs.40.3%,43.0%,86.1%,P<0.01),the duration of ventilation in each operationstion was shorter[(6.38±1.3)vs.(7.57±1.6),P0.05],pratieal compressionn flberin oneminutewas not different[(77.2±3.5)vs.(77.8±12.2),P>0.05)],the ratios of the duration of compression to that of ventilation was higher(2.6:1 vs.2.1:1).Logistic analysis showed that hand skill,compression posture and standard CPR trainings were high correlated with the CPR performance qualities(P<0.05).Conclusions The performance quahty of training group is much higher thanthat ofcontrol group.The standard and continuous CPR training is elfecfive in improving the quality of CPR operation.

Poly(β-amino esters) (PBAE) are used for drug carrier and have many advantages, such as pH-sensitivity, low toxicity, structural diversity and the synthetic method of PBAE is easy. Therefore they are possessed broad application prospect in tumor-targeted drugs delivery systems. In this paper, the structural features and target drugs delivery property of PBAE are reviewed. The application forms of PBAE and different anti-cancer drugs loaded in the copolymer for tumor-targeted drugs delivery systems are introduced particularly.
Antineoplastic Agents ; chemistry ; Drug Carriers ; chemistry ; Drug Delivery Systems ; Esters ; chemistry ; Hydrogen-Ion Concentration ; Neoplasms ; drug therapy ; Polymers

Adolescent ; Adult ; Antigens, CD34 ; blood ; Case-Control Studies ; Eosinophils ; Female ; Humans ; Interleukin-5 ; blood ; Leukocyte Count ; Male ; Middle Aged ; Rhinitis, Allergic, Perennial ; blood ; Young Adult

Bacillus anthracis collagen-like protein(BclA) is a structural component of the exosporium filaments,as well as the immunodominant antigen on the spore surface.The genes encoding BclA proteins were cloned and sequenced from three Bacillus anthracis strains separated from China.It was founded that the BclA proteins of strain A16R and 40048,containing 388 and 322 amino acids,72 and 50 copies of GXX repeat,5 and 3 copies of 21-amino-acid sequence(GPT)_(5)GDTGTT(BclA repeat) respectively,are different from those reported by foreign scholars;while the BclA protein of strain 40022,containing 370 amino acids,66 copies of GXX repeat,and 5 copies of BclA repeat,is identical with that of strain 53169 reported by others.The results are helpful for the molecular typing of B.anthracis strains,and provide a basis for the elucidation of the pathogenesis and immunogenicity of B.anthracis spore.

Objective To understand the psychological health status of the middle and primary school students,and to provide some advice of their mental health care.Methods In 11 611 middle and primary school students in 18 schools in Maojian area of Shiyan city,the students,teachers and parents at 5 schods were investigated a randomely,targets were examined by Achenbach Child Behavior Checklist(CBCL),Pupil Rating Scale Revised Screening for Learning(PRS),Conner's Parent Symptom Questionnaire(PSQ)and Conner's Teacher Rating Scale(TRS)and self-established questionnaires for general information.Results The investigation demonstrated:89.29% of students possessed very promising dreams and sublime pursuits,and had correct outlook on life and values;10.71% of students had comparatively severe psychological problems.The major problems appeared to be indefinite purpose of study,shorted of mental endurance and severe impulsivetrend.Moreover,an-xiety,emotion instability and solitary trend caused indifference,sheepish ness and difficulty in their communication.Conclusion Schools,families and society pay close attention to students,mental health and help the youngsters develop in a healthily psychdogical way.