Objective To study the effect of letrozole (LE) on ovulation in patients with polycystic ovary syndrome (PCOS).Methods One hundred and sixty-four patients with PCOS were divided into LE treatment group (n=68) and chloramiphene (CC) treatment group (n=96).Growth rate of follicles,serum hormone level,endometrial thickness,and cervix mucus were observed before and after treatment.Results The growth rate of follicles was 1.67 and 1.78 mm/d,respectively,in LE and CC treatment groups (P=0.14).The serum T level on the day of LH peak was 2.1?1.9 and 2.0?1.7ng/dL,respectively,in LE and CC treatment groups (P=0.93).The serum testosterone (T) level on day of LH peak and on day 3 of menses was 2.1?1.9 and 1.4?1.5 ng/d,respectively,in LE and CC treatment groups (P=0.09).The serum E2 level on day of LH peak was 89.0?59.5 and 108.1?46.0 pg/ml,respectively,in LE and CC treatment groups (P=0.13).The endometrial thickness was 11.3?1.6 and 9.7?1.4 mm,respectively,in LE and CC treatment groups (P=0.07).The score of cervix mucus was 11.0?1.1 and 8.3?3.1,respectively,in LE and CC treatment groups (P=0.003).Conclusion Letrozole can effectively induce ovulation in patients with polycystic ovary syndrome,and does not increase serum T level.

Humans ; Osteogenesis, Distraction ; instrumentation

OBJECTIVE To study the influence of various packing methods and controlling method toward the hidden wet pack after steam sterilization to ensure the sterilization quality and hygiene safety.METHODS The medical equipment was packed with three types of methods,then unloaded from the steam autoclave after being cooled at different time to observe their heating speed respectively.To choose two types of cotton fabric packaging methods,prolong the heating time,and cool in the steam autoclave for 30 minutes,then observe the heating speed of the inside pack and the dry qualification status after 12 hours respectively.RESULTS The heating speed was the fastest with the medical crinkly paper method;the heating speed of the inside pack didn't have any improvement after prolonging the heating time;the dry qualification rate had distinct difference between the two types of cotton fabric methods after 12 hours(P

Evidence-based medicine (EBM), which aims to get the best evidence from medical research, is a growing international movement in health care. Because of this new shift in medical practice, great attention should be paid to how to introduce EBM into Chinese Tuina, and this is a good opportunity for the development of Chinese Tuina. To adopt EBM will be beneficial to developing Chinese Tuina, improving clinical research, renewing education mode and getting more academic achievement. So it is necessary to establish a new experimental methodology combined with EBM in order to get great progress in Chinese Tuina.

AIM:To evaluate the clinical effect of traditional Chinese medicine plus laser photocoagulation on eyes which have peripheral retinal hole with shallow detachment.
METHODS: The 227 cases ( 246 eyes ) of retinal hole with shallow detachment were randomly divided into an integrated Chinese and western medicine group and a western medicine group. The former underwent laser photocoagulation combined with oral Chinese medicine;while the latter was treated with laser photocoagulation alone. Analyses of the effect were performed two months after treatment.
RESULTS:The total cure rate of integrated Chinese and western medicine group was 87. 7%, while that of western medicine group was 71. 6%, significant difference was considered between the two groups (P<0. 01).
CONCLUSION: Chinese medicine combined with laser photocoagulation plays an exact role in eyes which have peripheral retinal hole with shallow detachment, especially when the detached range is greater than 1PD, and it is significantly better than western laser therapy.

This paper was aimed to study the method of rapid determination of total flavonoids in Chrysanthemum of different processing methods by near infrared spectroscopy (NIRS). The Chrysanthemum was dried by three different processes. The three methods were directly drying, drying after steamed and drying after fry, respectively. The determination of total flavonoids in Chrysanthemum by different processing methods was produced by using UV-Vis spectrophotometry. Collecting the NIRS spectra of Chrysanthemum, the quantitative analysis model of total flavonoids content in Chrysanthemum of different processing methods was established by partial least square (PLS) and the model was validated. The correlation coefficient (R2), the root-mean-square error of calibration (RMSEC) and the root-mean-square error of prediction (RMSEP) were 0.996 19, 0.104 and 0.168, respectively. The correlation coefficient of predication (r) was 0.979 3 which state that the prediction was accurate. The method of NIRS had the advantage of fast determination, simple operation and high accuracy of prediction, and could be used for rapid determination of total flavonoids content in Chrysanthemum of different processing methods.

Objective To establish the model for periventricular leukomalacia(PVL) by intracerebral injection of 3-nitropropionic acid (3-NPA) and explore realistic model for concerned studies and investigate the diagnostic method with magnetic resonance imaging (MRI) examination. MethodsSprague-Dawley rat pups of both sexes at the age of postnatal day 5 (P5) were randomized and divided into two groups: NPA group and PBS group , and they were injected the same volume of 3-NPA and PBS with a tip located at the corpus callosum above the left ventricle by stereotaxis instrument, respectively. One day (P6), two days (P7), three days (P8) and nine days (P14) after injection, the injections were transcardially perfused and brains were collected. Then sections of brains were undertaken HE staining; growth and the time of opening eyes of the rats in the two different groups were observed and compared. Neurobehaviorai activity and memory tests were performed on postnatal day 29 (P29) and day 30 (P30). MRI examination was performed on postnatal day 30 (P30). ResultsMore weight increase and slower opening eye time were found in the NPA group compared with PBS group (P < 0.05). In the NPA group, sub-cortical and periventricular white matter rarefaction were observed by HE staining on P6, P7 and P8, significant lateral ventricle enlargement was found on P14, while the same changes were not found in the PBS group, and no histological changes in gray matter were noted in both groups. The outcomes of neurobehavioral tests of NPA group were much more abnormal compared with the PBS group (P < 0.05). MRI examination disclosed the signal changes of brain tissue is worse in the NPA group than that of the PBS group in muscle strength of limbs, autocinesis, capability and white matter. ConclusionsThe model for PVL induced by intracerebral injection of 3-NPA is characterized by damage to the periventricular white matter. The model can stimulate the pathologic change factually in vivo. The neurobehavioral movement is consistent with.clinical symptom. It can be used as a model to investigate some related disease. MRI examination is a feasible diagnostic method to show anatomic changes of white matter injury of the brain.

AIM: To study the quality standard of Compound Shencha Granuls (Radix et Rhizoma Glycyrrhizae, Radix Rehmanniae, etc.). METHODS: Radix et Rhizoma Glycyrrhizae and Rhizoma et Radix Polygoni Cuspidati in Compound Shencha Granule were distinguished by TLC. Ursolic acid was determinated by TLCS. RESULTS: The methods of TLC to distinguish Radix et Rhizoma Glycyrrhizae and Rhizoma Polygoni Cuspidati were feasible without negative inference. Ursolic acid content in three groups of samples was 1.24 - 1.58 mg?g -1 . CONCLUSION: The method is accurate and reproducible. It can be used for the quality control of Compound Shencha Granule.

Objective To explore the clinical feature,diagnosis,therapy and prognosis of primary cardiac lymphoma.Methods One case of primary diffuse large B-cell lymphoma of the heart was studied.The clinical feature,pathogenesis,diagnosis,therapy and prognosis of primary cardiac lymphoma were further investigated through literatures review.Results Patient,female,64 years old,mainly clinical feature with the activities of chest tightness,gas tight,echocardiogram showed right atrial lesions,ECG of sick sinus syndrome.Right atrial tumor excision by pathological examination confirmed the diagnosis of diffuse large B cell lymphoma(DLBCL),treated with R-CHOP (rituximab,cyclophosphamide,vinorelbine,pirarubicin,prednisone) chemotherapy,cardiac pacemaker implantation,the patient had received 3 cycles of chemotherapy currently,and was at the intermission of chemotherapy.Conclusion Primary cardiac lymphoma is extremely rare.Its pathogenesis remained to be unclear.With non-specific clinical manifestations,the diagnosis is mainly confirmed by histopathological and immunohistochemical staining.It is sensitive to chemotherapy generally,but the special location of the tumor leads to poor prognosis.

This article brought forward the adverse vocational education model-organizing lower level of undergraduates to participate in the work of public health specialty. This model enhanced their understanding of this work and urged more students to devote themselves in this area. Besides, questionnaires were used to know how alumni performed and what was needed for a future professional of public health.