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Methods for detection of breast cancer

a breast cancer and screening test technology, applied in the field of breast cancer screening test, can solve the problems of reducing the number of breast cancer deaths and primary prevention, and achieve the effects of reducing the number of deaths, facilitating early detection of breast cancer, and being easy to carry around

Inactive Publication Date: 2006-11-02
SENTINA BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0017] The method of the invention has many advantages. The method is rapid, simple, inexpensive, and provides a screening test for breast cancer that does not give a high percentage of false negative or false positive results. The method facilitates early detection of the disease and it can be used for screening of large populations. Because of its high sensitivity for neoplasms the method of the invention may replace mammography or it may reduce the number of patients undergoing mammography. The early diagnosis of the disease made possible by the screening process herein described, in combination with novel medicinals such as femara, may lower significantly the number of deaths from breast cancer although primary prevention of the disease (37) is not yet possible.

Problems solved by technology

The early diagnosis of the disease made possible by the screening process herein described, in combination with novel medicinals such as femara, may lower significantly the number of deaths from breast cancer although primary prevention of the disease (37) is not yet possible.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0120] Preparation of Schiff's reagent: p-Rosanilin (0.2 g) is dissolved in hot water (100 mL); after cooling to room temperature sodium bisulfite (1.17 g) and 1N hydrochloric acid (17 mL) are added sequentially, and the solution is allowed to stand in the dark at room temperature for 4 days. Then charcoal (0.15 g) is added, mixed well, and filtered off. The resulting colourless solution is stable for a prolonged period of time in a refrigerator at +2 to +5° C.

example 2

[0121] Sample nipple fluid was deposited on the fabric portion of the plates and stored at −70° C. in a freezer. Before processing, individual plates with deposited nipple fluid were allowed to warm up to the room temperature and kept at that temperature for 5 hours. Then the fabric portions of the plates were sprayed with Schiff's reagent described in Example 1, and allowed to develop red / purple color for 20 minutes. The plates were then placed in a glass vessel such as a “Wheaton staining dish” which was filled with distilled water and gently agitated for 3 minutes. For agitation, an orbital shaker at 65-100 RPM was used. The colored washing water was replaced by fresh distilled water, the staining dish with the plates carrying the specimens was again gently agitated for 3 minutes, and the colored water discarded. The washing was repeated three times for the total washing time of 10 minutes, with a change of water approximately every three minutes. Usually the last washing water r...

example 3

[0122] Nipple aspirate fluid (34 specimens) from 28 subjects (12 diagnosed with cancer) age between 30 and 52 years (median 41 years) attending the Breast Care Clinic at the University of California at San Francisco had been collected using an aspirator (25,26) well known to those experienced in the art, and four nipple fluid specimens from healthy volunteers at the University of Toronto were collected using the pressure method. The test results were positive in all subjects diagnosed with breast cancer (malignant or invasive, ductal carcinoma in situ, and lobular carcinoma in situ). The test was negative in most disease-free subjects. Exceptions were: two specimens from the high risk group (first degree relative such as mother, sister; daughter diagnosed with breast cancer) were both positive. Two individuals attending the Breast Care Clinic for unspecified reasons tested positive although they neither became diagnosed with breast cancer nor had a first degree relative with breast ...

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PUM

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Abstract

The invention relates to a simple screening test for neoplasia, a precancerous condition, or cancer of the breast. A method is described whereby a breast cancer marker is detected in breast fluid. In a particular embodiment, the method involves treating samples of breast fluids with an aldehyde detecting reagent without any prewashing. The appearance in breast fluids of a marker that is detected by an aldehyde detecting reagent, such as a Schiff s reagent, correlates very well with the disease status of the breast cancer subjects from which the fluids were obtained. Screening test kits are also provided.

Description

FIELD OF INVENTION [0001] This invention relates to a simple screening test for breast cancer. A method is described whereby a breast cancer marker is detected in breast fluid. BACKGROUND OF THE INVENTION [0002] Breast cancer is the most common noncutaneous cancer in North American women, with an estimated 192,000 newly diagnosed cases in 2001 in the United States alone. Breast cancer also appears in males although it is rare: about 1% of the incidence in women. In Connecticut, where longitudinal cancer statistics are available, breast cancer increased about 1% a year from the 1940s to 1980. Between 1982 and 1987, it increased about 4% a year, in association with the widespread use of screening by mammography (1-4). [0003] Because of this high incidence, breast cancer is the second most common cause of cancer-related death in women in North America, with an estimate of over 40,000 cancer fatalities in 2001, i.e. approximately 25% of breast cancer cases end in death (1). Therefore, p...

Claims

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Application Information

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IPC IPC(8): C12Q1/00G01N33/00G01N33/52G01N33/574
CPCG01N33/52Y10T436/200833G01N33/57488G01N33/57415
Inventor KREPINSKY, JIRI JANFURRER, RUDOLFYEUNG, KA ING
Owner SENTINA BIOTECH
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