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Biomedical subjects

B B Sharma

Publications and source records attributed to B B Sharma.

At least 19 recordsLinked to original sources
PubMed2003

AgNOR counts in cervical lesions.

Present study was undertaken with a view to assess the utility of AgNOR counts in differentiating cervical lesions. One hundred cases of cervical lesions including normal, chronic cervicitis, CIN (I, II, III) and carcinoma were taken up for study during the period December 1995 to November 1996. Three micron thick sections of paraffin were subjected to AgNOR staining as described by Crocker and Smith with a little modification of 0.01% safranin counterstain. Statistical counts of AgNORs were done. The mean AgNOR counts in cervical epithelium showed a progressive and statistically significant increase from normal to chronic cervicitis to CIN, I, II and III (P<0.001). Scores in carcinoma also exceeded that of CIN (P<0.05). This can prove to be a useful adjunct to routine histopathology to evaluate cervical lesions.

Cervix Uteri↗
PubMed2002

Evaluation of AgNORs in pulmonary lesions: a cyto-histopathological correlation.

Silver nucleolar organizer regions (AgNORs) were studied in one hundred specimens of endobronchial brushings. Bronchial biopsies were also obtained from these one hundred cases and subjected to AgNOR staining. These included twenty histologically normal cases, ten cases of inflammatory pathology and seventy cases of pulmonary neoplasms. Fixed cytologic smears and three micron thick sections of paraffin embedded tissue were subjected to AgNOR staining. The mean AgNOR counts in bronchial tissue showed a progressive and statistically significant increase from normal, through inflammatory to neoplastic lesions in both cytologic smears and histopathologic specimens. The AgNOR technique is simple, inexpensive and a useful adjunct to routine histopathology, to evaluate pulmonary lesions. The counts, however, cannot be standardized for a particular lesion as there are inter-laboratory variations.

Bronchi↗
PubMed2000

Bypassing hybridoma technology: HLA-C reactive human single-chain antibody fragments (scFv) derived from a synthetic phage display library (HuCAL) and their potential to discriminate HLA class I specificities.

The generation of discriminative, monospecific anti-HLA antibodies used to be a difficult endeavor. Phage display technology, using single-chain antibody fragments (scFv) offers a powerful alternative obtaining target-specific, genetically stable reagents. Most of scFv obtained to date have been enriched by panning phage libraries to solid-phase coupled antigens. In the present study, HLA-C-specific scFv were isolated using a synthetic phage library in combination with a Cw*0602 overexpressing cell line. ScFv from this procedure precipitated HLA-Cw*0602 heavy chains from whole cell lysates. Flow cytometry analysis revealed that scFv stained HLA-Cw*0602-positive cells, but not cells expressing HLA alleles Cw*0302, Cw*0802, A*0201, B*2705, or Gm1*01011, indicating the specificity of scFv. Similarly they showed an ability to discriminate Cw*0602-positive from Cw*0602-negative peripheral blood lymphocytes (PBL). The results of our study demonstrate the feasibility to genetically engineer single-chain HLA-class I-specific antibodies, by phage display technology. This approach might be a valuable tool to develop a broad range of novel monospecific antibodies against HLA-class I specificities.

Alleles↗
PubMed1999

AgNORs in endometrial lesions.

Silver nucleolar organizer region (AgNOR) staining was employed in one hundred specimens of endometrium. These included fifteen normal controls (Proliferative + Secretory endometrium) and eighty five lesions. Endometrial lesions comprised of endometritis (15), endometrial hyperplasia (25) and endometrial carcinoma (45). Three micron thick sections of paraffin embedded tissue were subjected to AgNOR staining as described by Crocker and Smith with a little modification of 0.01% safranin counterstain--The mean AgNOR scores were found to increase steadily from normal to endometritis to endometrial hyperplasia and carcinoma--The observations revealed statistically significant differences in values between atypical hyperplasia and carcinoma also. AgNOR staining and scoring is simple, inexpensive and a useful adjunct to routine histopathology to evaluate endometrial lesions especially to differentiate borderline lesions. Though scores cannot be standardized and fixed for a particular lesion as there are intralaboratory variations.

Endometrial Hyperplasia↗
PubMed1992

Adolescent blood pressure survey: Tulsa, Oklahoma, 1987 to 1989.

The study goals were to document the incidence of elevated blood pressure (BP) values in public high school students in Tulsa, Oklahoma; to determine whether age and sex are risk factors; and to encourage adolescents with abnormal screening BP values to seek medical care. Over a 2-year period, 5537 adolescents aged 14 to 19 years were evaluated by a mass screening method. Blood pressure was measured once between 8:30 and 9:30 AM, with the students seated. Korotkoff phases 1 and 5 were recorded as systolic and diastolic BP. According to the criteria of the Second Task Force on Hypertension in Children and Adolescents, 334 students had elevated BP values (either systolic, diastolic, or both) (an incidence of 6%). Boys had an incidence of elevated systolic BP of 5.8%, while girls had a 2.8% incidence, a difference that might have been expected because of the generally higher incidence among men in the adult population. The incidence of elevated diastolic BP was 2.8% in boys and 2.1% in girls. Statistically significant differences between boys and girls mean systolic and diastolic elevations were found, but were not considered clinically significant. An instructional mailing was done in an effort to stimulate follow-up medical care for those with abnormal findings, but its effect was not measured.

Adolescent↗
PubMed1985

A multicenter comparison of related pharmacologic features of cephalexin and dicloxacillin given for two months to young children with cystic fibrosis.

Twenty-one cystic fibrosis patients under 3 years of age were enrolled in an open multicenter study to assess the feasibility of the study design and to compare selected pharmacologic features of cephalexin or dicloxacillin administered orally for 2 months. Patient tolerance and compliance were significantly less for dicloxacillin (p less than .01 and p less than .001, respectively). Superficial Candida infections were more common in the cephalexin group (p = 0.02), however increased stool frequency and nonspecific diaper rashes were more prevalent in patients receiving dicloxacillin (p less than .05). Staphylococcus aureus was isolated from respiratory secretions after 2 months from two dicloxacillin and no cephalexin patients. Areas under the curve and peak serum concentrations were higher for cephalexin (p less than .05 and p = .02), but antistaphylococcal activity in serum was higher for dicloxacillin (p less than .05) due to a lower mean MIC compared to cephalexin. Deep pharyngeal plus routine throat culture yielded more pathogens than either method alone. Express mail and central processing of respiratory specimens was efficient for most organisms, however there was some loss of Streptococcus pneumoniae and Haemophilus influenzae. Cephalexin was associated with better patient acceptance and compliance despite higher rates of superficial fungal infections as compared to dicloxacillin. Cephalexin, routine bacteriologic throat swabs processed locally or centrally, mail-in urine compliance assessment and a multicenter design are feasible components for a long-term prospective evaluation of antibiotic prophylaxis in patients with cystic fibrosis.

Administration, Oral↗
PubMed1980

Urethral diverticulum in male subjects: report of 5 cases.

We present 5 cases of urethral diverticulum in male subjects, of which 2 were congenital and 3 were acquired. Of these diverticula 4 were in the anterior urethra, while 1 was in the posterior urethra. One congenital diverticulum contained multiple calculi.

Adolescent↗