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Biomedical subjects

Shi Rong

Publications and source records attributed to Shi Rong.

8 recordsLinked to original sources
PubMed2006

[Surgical diagnosis and treatment of Castleman's disease].

OBJECTIVE: To investigate the clinical features and treatment of the surgical tumors associated with Castleman's disease. METHODS: The clinical data of 20 patients with Castleman's disease, 6 males and 14 females, aged 39 (15-70), with the tumor size ranging from 2 cm x 3 cm to 10 cm x 9 cm, and with the tumor located in the mediastinal cavity (n = 6), retroperitoneal area (n = 2), abdominal cavity (n = 1), adrenal area (n = 1), neck and armpit (n = 2), and multi-centers (n = 2), were analyzed. RESULTS: Nineteen of the 20 patients underwent surgical resection of the tumor or lymph node. All were diagnosed as Castleman's disease by pathological examination. Most of the tumor was benign. Three cases were diagnosed as with paraneoplastic pemphigus. CONCLUSION: Surgical resection of the tumor is the first choice for treatment of Castleman's disease.

Adolescent↗
PubMed2004

Microarrays for the detection of HBV and HDV.

The increasing pace of development in molecular biology during the last decade has had a direct effect on mass testing and diagnostic applications, including blood screening. We report the model Microarray that has been developed for Hepatitis B virus (HBV) and Hepatitis D virus (HDV) detection. The specific primer pairs of PCR were designed using the Primer Premier 5.00 program according to the conserved regions of HBV and HDV. PCR fragments were purified and cloned into pMD18-T vectors. The recombinant plasmids were extracted from positive clones and the target gene fragments were sequenced. The DNA microarray was prepared by robotically spotting PCR products onto the surface of glass slides. Sequences were aligned, and the results obtained showed that the products of PCR amplification were the required specific gene fragments of HBV, and HDV. Samples were labeled by Restriction Display PCR (RD-PCR). Gene chip hybridizing signals showed that the specificity and sensitivity required for HBV and HDV detection were satisfied. Using PCR amplified products to construct gene chips for the simultaneous clinical diagnosis of HBV and HDV resulted in a quick, simple, and effective method. We conclude that the DNA microarray assay system might be useful as a diagnostic technique in the clinical laboratory. Further applications of RD-PCR for the sample labeling could speed up microarray multi-virus detection.

Base Sequence↗
PubMed2004

[The clinical characteristics and therapy of multiple endocrine neoplasia type 2].

OBJECTIVE: To study the clinical characteristics and treatment of multiple endocrine neoplasia (MEN) type 2. METHODS: The clinical features, diagnosis and treatment of from 1980 to 2002 8 cases of multiple endocrine neoplasia type 2 from Peking Union Medical College Hospital were reviewed and analyzed in clinical features, diagnosis and treatment retrospectively. RESULTS: Seven cases were with paroxysmal hypertension, the highest blood pressure was over 200 mm Hg (1 mm Hg = 0.133 kPa). Tumor was found in 3 cases. The diagnosis was confirmed by B-ultrasonography, CT and urine catecholamine test: six cases with MEN 2a 2 with MEN 2b. Six cases were medullary carcinoma of thyroid with or without parathyroidoma or hyperplasia, 1 with multiple mucosal neuromata. One case was pheochromocytoma with marfan's syndrome; 7 cases were with bilateral adrenal tumor. Total resection or resection ectomy was performed on different stages on adrenal gland, parathyroid tubercle. Average follow-up was 9 years. And the feedback was good. CONCLUSION: The diagnosis of multiple endocrine neoplasia type 2 depends on endocrine biochemical tests, B-ultrasonography and CT. When the pheochromocytoma and the other tumor exists at the same time, operation is the primary treatment, and it is better to remove the pheochromocytoma at the first.

Adolescent↗
PubMed2004

An oligonucleotide microarray bait for isolation of target gene fragments.

A new molecular-baiting method was studied by retrieving targeted gene fragments from an oligonucleotide microarray bait after hybridization. To make the microarray bait, 70-mer oligonucleotides that were designed to specifically represent the SSA1 gene of Saccharomyces cerevisiae were printed on the slide. Samples of the Saccharomyces cerevisiae mRNA were extracted and labeled by the RD-PCR (Restriction Display PCR) method using the Cy5-labelled universal primer, then applied for hybridization. The sample fragments that hybridized to the microarray were stripped, and the eluted cDNAs were retrieved and cloned into the pMD 18-T vector for transformation, plasmid preparation, and sequencing. BLAST searching of the GenBank database identified the retrieved fragments as being identical to the SSA1 gene (from 2057-2541bp). A new method is being established that can retrieve the sample fragments using an oligo-microarray-bait.

Cloning, Molecular↗
PubMed2004

[Clinic analysis of repeat prostatectomy after transurethral prostatectomy for benign prostatic hyperplasia].

OBJECTIVE: To analyze the incidence rate of repeat transurethral prostatectomy (TURP) and its probable causes after TURP for benign prostatic hyperplasia (BHP). METHODS: A retrospective study was conducted to summarize the cases who received repeat transurethral resection of prostate after TURP for benign prostatic hyperplasia in recent 20 years. The data were compared with the data of the cases who just received once TURP for BPH. RESULTS: 1225 patients received TURP for BHP from 1981 to 2001. Fifty-seven patients experienced repeat transurethral resection of the prostate after a mean interval of 3 years and 2 months with an incidence rate of 4.65%. 69.8% of which manifested repeat gross hematuria before repeat prostatectomy, with a rate significantly higher than the general gross hematuria rate and the gross hematuria rate at the first admission (P < 0.005 and P < 0.01). CONCLUSION: The incidence rate of repeat prostatectomy after TURP for BHP is 4.65%. The mean interval between the two procedures is 3 years and 2 months. Gross hematuria is one of the main causes for repeat TURP besides the low urinary tract symptoms.

Aged↗
PubMed2002

A method for evaluation of the quality of DNA microarray spots.

To establish a method to evaluate the quality of the printed microarray and DNA fragments' immobilization. The target gene fragments that were made with the restriction display PCR (RD-PCR) technique were printed on a superamine modified glass slide, then immobilized with UV cross-linking and heat. This chip was hybridized with universal primers that were labeled with cy3-dUTP, as well as cDNA that was labeled with cy3-dCTP, as the conventional protocol. Most of the target gene fragments on the chip showed positive signals, but the negative control showed no signal, and vice versa. We established a method that enables an effective evaluation of the quality of the microarrays.

Nucleic Acid Hybridization↗
PubMed2002

[Telomerase expression in various lesions of adrenal cortex].

OBJECTIVE: To investigate the expression of telomerase in various lesions of adrenal cortex. METHODS: By autoradiography-based telomeric repeat amplification protocol, telomerase expression was detected in 36 samples of adrenocortical lesions, including 29 cases adrenocortical adenoma (8 Cushing's syndrome, 17 aldosteronism and 4 nonfunctional adenomas), 5 cases of hyperplasia of adrenal cortex (presented with Chushing' syndrome), 2 cases adrenocortical carcinoma, and 4 samples of normal adrenal cortex. RESULTS: Of the 40 samples, 2 cases of adrenocortical carcinomas had telomerase expression, and the others had no telomerase expression detected. CONCLUSIONS: No significant telomerase expression was found among different endocrine functional benign adrenocortical lesions. Telomerase expression may be used as an important marker of malignant adrenocortical tumor.

Adrenal Cortex↗