Cohort studies are important observational epidemiological studies. In this perspective, we briefly introduced several ongoing prospective cohort studies of cardiometabolic diseases in China and in the U. S. , which have shaped our current understanding of cardiometabolic diseases. We hope that this perspective could shed lights on the research of chronic diseases such as diabetes and cardiovascular diseases.

Child ; Humans ; Male ; Thyroiditis, Suppurative ; pathology

Aged ; Aged, 80 and over ; Humans ; Male ; Porokeratosis ; genetics ; Rectal Neoplasms ; genetics

OBJECTIVETo compare five materials commonly used in dentistry, including three types of metals and two types of ceramics, by using different sequences of three magnetic resonance imaging (MRI) field strengths (0.35, 1.5, and 3.0 T).

METHODSThree types of metals and two types of ceramics that were fabricated into the same size and thickness as an incisor crown were placed in a plastic tank filled with saline. The crowns were scanned using an magnetic resonance (MR) machine at 0.35, 1.5, and 3.0 T field strengths. The TlWI and T2WI images were obtained. The differences of various materials in different artifacts of field MR scans were determined.

RESULTSThe zirconia crown presented no significant artifacts when scanned under the three types of MRI field strengths. The artifacts of casting ceramic were minimal. All dental precious metal alloys, nickel-chromium alloy dental porcelain, and cobalt-chromium ceramic alloy showed varying degrees of artifacts under the three MRI field strengths.

CONCLUSIONZirconia and casting ceramics present almost no or faint artifacts. By contrast, precious metal alloys, nickel-chromium alloy dental porcelain and cobalt-chromium ceramic alloy display MRI artifacts. The artifact area increase with increasing magnetic field.

Artifacts ; Ceramics ; Chromium Alloys ; Crowns ; Dental Alloys ; Dental Materials ; Dental Porcelain ; Magnetic Fields ; Magnetic Resonance Imaging ; Zirconium

Objective To evaluate the effect of combination of phacoemulsification and trabeculectomy on patients with cataract and glaucoma.Methods 19 patients(23 eyes)with co-existing glaucoma and cataract were treated with triple procedure by means of scleral tunnel flap.The mean follow-up period was(15.8 ±3.5)months.Results Compared with preoperative visual acuity,16(64%)of 25 eyes had a best corrected visual acuity of ≥0.6 at the last follow-up(0.1～1.0)(P＜0.01);The mean preoperative intraocular pressure(IOP)was(23.01 ±2.63)mmHg which decreased to(14.02 ±2.05)mmHg(P＜0.05 ,P ＜0.01)after treatment.Conclusion The triple procedure is effective for treating patients with co-existing cataract and glaucoma,which could enhance the visual acuity,control IOP and reduce complications.

Objective To establish a method for the determination of phthalates in water by solid phase extraction-gas chromatography-mass spectrometry(SPE-GC-MS).Methods The water samples were extracted and enriched by solid phasse extraction,using 10%methanol-methyl tert-butyl ether as eluant,dimethylphthalate(DMP),diethylphthalate(DEP),dibutylphthalate (DBP)and diethylhexylphthalate(DEHP)were determined by gas chromatography-mass spectrometry with selected ion monitoring mode(SIM).Results The concentration had a good linear range in the range of 0.00~10.00?g/ml,the correlation coefficient was above 0.998.The detection limit of DMP,DEP,DBP and DEHP were 2.7,2.1,1.6 and 2.5 ng/L respectively,the average recovery rate and the RSD of the method were 78.0%～102.5%and 3.3%～7.8%respectively.Conclusion This method,with small amount of solvent,is simple,fast,accurate and is applicable to the determination of phthalates in water.

Objective To evaluate the CT findings and diagnostic value of splenic lymphoma.Methods 15 cases of splenic lymphoma proved by clinical or pathohistological evidence and examined with plain and enhanced CT scans were retrospectively analyzed with literature reviewed.Results Of 15 cases of splenic lymphoma,The CT findings of splenic lymphoma included:5 cases of Solitary pattern displayed as a uniform density,solitary lesion in the liver with mildle uniform enhancement or peripheral enhancement;8 cases of multiple nodular patterndemonstrated multiple,round-like or lobular lesions with uniform density(in most lesions) with clear margin,and with mildle uniformenhancement or peripheral enhancement after contrast medium administration;2 cases of diffuse pattern showed diffuse enlargement of thespleen with hypodensity or miliary low-density foci.Of 15 cases of hepatic lymphoma,the lesion extended out of spleen in 9 cases.Conclusion The CT findings of splenic lymphoma are of certain characteristics,the presence of abdominal lymphoma is also helpful tosuggest the diagnosis.

Objective:To discuss the value of congenital hypertrophy retinal pigment epithelium(CHRPE) in diagnosis of familial adenomatous polyposis(FAP).Methods: Twenty-two FAP patients who have received treatment in our department(January 2001 to June 2003) and 10 patients with sporadic colorectal polys(as control group) were subjected to optical fundus examination.The incidence,morphological feature and distribution of CHRPE were analyzed.Results: Seventeen(81.8%) of the 22 FAP patients were found to have CHRPE in optical fundus.The lesions showed a bilateral and multiple(≥2) distribution along the peripheral vessels with oval pigmentation.One patient was found to have CHRPE in the control group.Conclusion: Optical fundus examination is a highly sensitive and specific adjuvant diagnosis for FAP.It is a safe and effective way for screening FAP in FAP family members.

Objective To investigate the effect of Brocho-Vaxom in curing chronic pulmonary heart disease and the influence of patient's immunity.Methods 58 patients with chronic pulmonary heart disease were randomly divided into two equal groups.Each patient of treatment group took a Brocho-Vaxom capsule(7mg/cap) every.The respiratory tract infection times and duration were observed.The serum IgA,IgG,IgM level were tested by fast immunonephelometry.The sub-type lymphocyte was tested by SP,and the NK cell's activity was tested by MTT.Results The infection time obviously declined in treatment group which the average was (2.5?1.8) in five months as compared with that in the controlled group(P

0.05).Conclusion The situation of antibacterials abuse before seeing a doctor is severe;antibacterials-related education and other measures are necessary to stop it.