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1.
PLoS Med ; 18(11): e1003850, 2021 11.
Article in English | MEDLINE | ID: mdl-34762663

ABSTRACT

BACKGROUND: Body-mass index (BMI) and blood pressure (BP) levels are rising in sub-Saharan African cities, particularly among women. However, there is very limited information on how much they vary within cities, which could inform targeted and equitable health policies. Our study aimed to analyse spatial variations in BMI and BP for adult women at the small area level in the city of Accra, Ghana. METHODS AND FINDINGS: We combined a representative survey of adult women's health in Accra, Ghana (2008 to 2009) with a 10% random sample of the national census (2010). We applied a hierarchical model with a spatial term to estimate the associations of BMI and systolic blood pressure (SBP) and diastolic blood pressure (DBP) with demographic, socioeconomic, behavioural, and environmental factors. We then used the model to estimate BMI and BP for all women in the census in Accra and calculated mean BMI, SBP, and DBP for each enumeration area (EA). BMI and/or BP were positively associated with age, ethnicity (Ga), being currently married, and religion (Muslim) as their 95% credible intervals (95% CrIs) did not include zero, while BP was also negatively associated with literacy and physical activity. BMI and BP had opposite associations with socioeconomic status (SES) and alcohol consumption. In 2010, 26% of women aged 18 and older had obesity (BMI ≥ 30 kg/m2), and 21% had uncontrolled hypertension (SBP ≥ 140 and/or DBP ≥ 90 mm Hg). The differences in mean BMI and BP between EAs at the 10th and 90th percentiles were 2.7 kg/m2 (BMI) and in BP 7.9 mm Hg (SBP) and 4.8 mm Hg (DBP). BMI was generally higher in the more affluent eastern parts of Accra, and BP was higher in the western part of the city. A limitation of our study was that the 2010 census dataset used for predicting small area variations is potentially outdated; the results should be updated when the next census data are available, to the contemporary population, and changes over time should be evaluated. CONCLUSIONS: We observed that variation of BMI and BP across neighbourhoods within Accra was almost as large as variation across countries among women globally. Localised measures are needed to address this unequal public health challenge in Accra.


Subject(s)
Blood Pressure/physiology , Body Mass Index , Censuses , Health Surveys , Small-Area Analysis , Spatial Analysis , Adult , Bayes Theorem , Behavior , Diastole/physiology , Female , Geography , Ghana/epidemiology , Humans , Socioeconomic Factors , Systole/physiology
2.
Ghana Med J ; 55(3): 190-197, 2021 Sep.
Article in English | MEDLINE | ID: mdl-35950182

ABSTRACT

Objectives: This study sought to determine the presentation, treatment and outcomes of breast cancer among women in Cape Coast, Ghana. Design: Retrospective medical record review. Setting: Cape Coast Teaching Hospital, Cape Coast, Ghana. Participants: Female breast cancer patients. Interventions: None. Main outcome measures: Proportion of female breast cancer patients presenting with advanced disease. Results: Approximately 84% of women had a primary presentation of breast cancer, with metastatic disease present in 34% of patients. Surgical management mainly involved partial mastectomy (21.7%) and total mastectomy (78.6%), with the most common postoperative complications being surgical site infections (3.8%). Non-surgical management involved chemotherapy, radiation therapy and anti-estrogen therapy, with Stage 3 and 4 patients twofold more likely to receive neoadjuvant chemotherapy than earlier stages (OR= 2.0 95% CI (1.4, 3.0, p<0.001). Grade 1 cancers were diagnosed in 11.0%, Grade 2 in 43.8%, and Grade 3 in 45.2%. The mean cancer size was 6.5 centimetres (range 1.5 to 20.0). Lymphatic vascular invasion was present in 59/125 (47.2%), estrogen receptor status was positive in 32.6%, progesterone receptors were positive in 22.1%, and Her-2/neu was positive in 32.6%. Triple-negative breast cancer was identified in 41/89 (46.1%). Conclusions: Women with breast cancer typically present to the Cape Coast Teaching Hospital with advanced stage disease and experience poor outcomes. Funding: Funding for this study was provided by the Harvard Medical School Scholars in Medicine.


Subject(s)
Breast Neoplasms , Breast Neoplasms/pathology , Breast Neoplasms/therapy , Female , Ghana/epidemiology , Hospitals, Teaching , Humans , Mastectomy , Retrospective Studies
3.
Int Health ; 11(1): 42-51, 2019 01 01.
Article in English | MEDLINE | ID: mdl-30247588

ABSTRACT

Background: To characterize the health status of selected garment and textile factory workers in Bangladesh using a workplace mobile health clinic. Methods: A retrospective review of de-identified worker health information was performed using 1906 medical records. Results: The mean age of the workers was 27.9±7.3 y, with 60.3% (1150/1906) female and 39.7% (756/1906) male workers. The most common medical conditions identified were anemia (19.0%; 362/1906), elevated BP (EBP) (11.9%; 226/1906) and elevated fasting blood glucose (FBG) (8.0%; 151/1906). Among the workers who had EBP, 86.3% (195/226) were previously undiagnosed, while out of the workers with elevated FBG, 72.8% (110/151) were newly diagnosed. Men were more likely than women to have EBP (OR 3.5, 95% CI [2.12-5.56], p<0.001), a family history of diabetes (OR 3.6, 95% CI [2.1-5.9], p<0.001) and no formal education (OR 4.9, 95% CI [3.6-6.7], p<0.001). Conclusions: Despite the relatively young mean age, significant percentages of workers were identified as having undiagnosed chronic health conditions, including EBP and elevated FBG, that require urgent medical attention and health education. The findings suggest that provision for annual health screening, either by mobile on-site clinics or by training the existing in-house paramedics, will help improve health of the factory workers.


Subject(s)
Chronic Disease/epidemiology , Clothing , Manufacturing Industry , Mass Screening , Occupational Diseases/diagnosis , Occupational Diseases/epidemiology , Adult , Anemia/diagnosis , Anemia/epidemiology , Bangladesh/epidemiology , Blood Glucose/analysis , Fasting/blood , Female , Humans , Hyperglycemia/diagnosis , Hyperglycemia/epidemiology , Hypertension/diagnosis , Hypertension/epidemiology , Male , Medical Records , Mobile Health Units , Occupational Health Services , Retrospective Studies , Young Adult
4.
Ghana Med J ; 52(3): 140-146, 2018 Sep.
Article in English | MEDLINE | ID: mdl-30602799

ABSTRACT

BACKGROUND: This study examined the association between perception of risk for hypertension and overweight/obesity. DESIGN: Cross-sectional questionnaire-based survey. SETTING: Out-patient department of the Central Regional Hospital in Cape Coast, Ghana. PARTICIPANTS: Adult men and women at least 18 years old. INTERVENTIONS: None. MAIN OUTCOME MEASURES: Perception of risk for hypertension, overweight/obesity. RESULTS: About 39% of the participants (N=400) were found to be overweight/obese, with disproportionally higher rates among women (50%) than men (28%). Results of the binary logistic regression models revealed a strong positive association (OR = 2.21, 95% CI =1.23, 3.96) between perception of risk for hypertension and overweight/obesity. Increasing age, high television exposure, female gender and being in a relationship were also noted to be associated with overweight/obesity. CONCLUSIONS: These findings highlight the need for the design of programmes to help individuals appreciate the reality of weight-related health risks, as well as the need to embrace lifestyles that promote healthy weight outcomes. FUNDING: Harvard Medical School Travelling Fellowship, Scholars in Medicine Office, Harvard Medical School.


Subject(s)
Hypertension/epidemiology , Obesity/epidemiology , Overweight/epidemiology , Adult , Age Distribution , Body Weight , Cross-Sectional Studies , Female , Ghana/epidemiology , Humans , Logistic Models , Male , Middle Aged , Risk Factors , Sampling Studies , Sex Distribution , Young Adult
5.
J Cancer Educ ; 26(3): 560-5, 2011 Sep.
Article in English | MEDLINE | ID: mdl-21644005

ABSTRACT

Breast cancer has emerged as an important health condition worldwide, including developing countries. Screening is limited or non-existent in resource-poor areas. The purpose of this study was to assess knowledge, attitudes, and practices of self (SBE) and clinical (CBE) breast examinations among 198 rural Nicaraguan women. Ten (5.1%) had performed a SBE, and 16 (8.1%) had a CBE. CBE was significantly associated with a pre-instruction total score of 70% or greater (OR = 13.7, 95% CI = 1.26, 149.70, p = 0.03). Family history of breast cancer was significantly associated with performing a SBE (OR = 5.5, 95% CI = 1.10, 27.81, p = 0.037) and a CBE (OR = 7.1, 95% CI = 1.40, 35.94, p = 0.018). A CBE is a significant determinant of pre-existing breast health knowledge. Physicians or physician extenders should be encouraged to perform a CBE as a routine component of health care delivery and cancer screening for women.


Subject(s)
Breast Neoplasms/diagnosis , Breast Neoplasms/prevention & control , Breast Self-Examination , Early Detection of Cancer , Health Knowledge, Attitudes, Practice , Teaching , Adolescent , Adult , Attitude to Health , Breast Neoplasms/psychology , Developing Countries , Female , Humans , Mammography , Middle Aged , Nicaragua , Young Adult
6.
J Cross Cult Gerontol ; 26(3): 299-314, 2011 Sep.
Article in English | MEDLINE | ID: mdl-21695397

ABSTRACT

The health of women residing in the developing countries is not limited to reproductive health conditions or infectious diseases. While these illnesses remain serious threats to a healthy life, as the population ages, the prevalence of illnesses considered to be of significance only in industrialized nations also increasingly afflicts the residents of the developing worlds. The health and well-being of the older women was evaluated in the 2003 Women's Health Study of Accra. This community based survey and clinical and laboratory examination of 1,328 women identified a significantly high prevalence of malaria and chronic, non-communicable diseases in all age groups without regard to education level or income. Hypertension, diabetes and obesity are significantly prevalent in women age 50 years and older. The prevalence of conditions which adversely affect health and quality of life, including impaired visual acuity, poor dentition, pain and limitations with mobility is significant in the women age 50 years and older. While these data are specific to Ghana, they have the potential to be generalizable to women in other urban areas in transition. As the life expectancy is increasing in developing countries, an increased awareness and treatment of chronic health conditions in the older women is critical to ensure a healthy life as they enter their golden years.


Subject(s)
Chronic Disease/epidemiology , Health Promotion/organization & administration , Health Status Indicators , Health Status , Women's Health , Aged , Diabetes Mellitus, Type 2/epidemiology , Female , Ghana/epidemiology , Humans , Hypertension/epidemiology , Life Expectancy , Malaria/epidemiology , Mental Disorders/epidemiology , Middle Aged , Obesity/epidemiology , Pain/epidemiology , Prevalence , Quality of Life , Socioeconomic Factors
7.
African Journal of Reproductive Health ; 13(1): 123-133, 2010. ilus
Article in English | AIM (Africa) | ID: biblio-1258439

ABSTRACT

The study was to determine the predictors of use of modern contraception among women in Accra, Ghana. Data were collected by trained interviewers using questionnaires. Complete data for 2199 women were analysed using Stata 8.2. The study showed that educational status was the most significant predictor of contraceptive use. Women with no formal education had a 48% reduction in the odds of having ever used contraception and a 66% reduction in the odds of currently using contraception. Regular use of health facilities did not affect contraceptive use. Female education should continue to be a priority of the Ghanaian government. Education about family planning and the effects of having large families should be integrated into the school curriculum. Ghanaian health workers need to be active in promoting the use of modern contraceptive methods (Afr J Reprod Health 2009; 13[1]:123-133)


Subject(s)
Contraception Behavior , Family Planning Services , Ghana , Women
8.
Afr J Reprod Health ; 13(1): 123-33, 2009 Mar.
Article in English | MEDLINE | ID: mdl-20687270

ABSTRACT

The study was to determine the predictors of use of modern contraception among women in Accra, Ghana. Data were collected by trained interviewers using questionnaires. Complete data for 2199 women were analysed using Stata 8.2. The study showed that educational status was the most significant predictor of contraceptive use. Women with no formal education had a 48% reduction in the odds of having ever used contraception and a 66% reduction in the odds of currently using contraception. Regular use of health facilities did not affect contraceptive use. Female education should continue to be a priority of the Ghanaian government. Education about family planning and the effects of having large families should be integrated into the school curriculum. Ghanaian health workers need to be active in promoting the use of modern contraceptive methods.


Subject(s)
Contraception Behavior/ethnology , Contraception/statistics & numerical data , Family Planning Services/statistics & numerical data , Adolescent , Adult , Age Factors , Aged , Aged, 80 and over , Contraceptive Agents , Cross-Sectional Studies , Educational Status , Female , Ghana , Health Knowledge, Attitudes, Practice , Health Surveys , Humans , Middle Aged , Religion , Young Adult
9.
Afr J Reprod Health ; 12(3): 151-8, 2008 Dec.
Article in English | MEDLINE | ID: mdl-19435019

ABSTRACT

The study was to measure the prevalence of sexually transmitted infection (STI) symptoms among women in Accra, Ghana, to identify characteristics that predispose to STI symptoms and to identify factors that influence health-seeking behaviour of women with STI symptoms. Data were collected by trained interviewers through questionnaire interviews of 3183 women. Data analysis was restricted to 1329 women with complete data. Only 19% of our study group had STI symptoms. Only 35% of the women with STI symptoms received care. Having high wealth index, being older and having no history of condom use were protective factors for experiencing STI symptoms. Seeking care was associated with increased by high wealth index and the presence of an offensive vaginal odour. Income level on its own did not affect health seeking behavior. Wealth index is the most significant determinant of a woman having STI symptoms and seeking care in Accra.


Subject(s)
Patient Acceptance of Health Care/statistics & numerical data , Sexually Transmitted Diseases/epidemiology , Adult , Chi-Square Distribution , Cross-Sectional Studies , Demography , Female , Ghana/epidemiology , Humans , Prevalence , Risk Factors , Surveys and Questionnaires
10.
Trop Doct ; 37(4): 241-4, 2007 Oct.
Article in English | MEDLINE | ID: mdl-17988495

ABSTRACT

The hypothesis tested in this study was that the 'traditional build' is the culturally valued body shape by Ghanaian women. Culturally sensitive figural stimuli were designed to assess the current body image (CBI) and the ideal body image (IBI) of Ghanaian women. The most frequently selected model for the CBI was one that represented a slightly overweight woman; the IBI selected was consistent with a representation of normal body mass index; and the least healthy image was that figure that represented morbidly obesity.


Subject(s)
Attitude to Health , Body Image , Cultural Characteristics , Self Concept , Adult , Aged , Black People , Body Mass Index , Female , Ghana , Health Surveys , Humans , Middle Aged , Obesity , Overweight , Risk Assessment
11.
J Genet Couns ; 16(6): 755-62, 2007 Dec.
Article in English | MEDLINE | ID: mdl-17674165

ABSTRACT

This study examined women's recall of physician recommendations as well as patient satisfaction following participation in a breast/ovarian cancer risk and prevention program. Participants were 41 high risk women who attended a cancer risk program 4-6 months earlier. Two-thirds of women who received recommendations for tamoxifen treatment and genetic testing did not recall these recommendations upon follow-up. A number of women misunderstood recommendations and a quarter of the sample recalled recommendations that were not made during the consultation. Although these high risk women were generally satisfied with their counseling visit, those individuals who received particularly complex sets of recommendations reported feeling less understood and were less satisfied with the counseling. Findings underline the importance of examining recommendation recall, in addition to perceptions of cancer risk, when evaluating the clinical implications of cancer risk assessment.


Subject(s)
Breast Neoplasms/epidemiology , Genetic Counseling , Memory , Ovarian Neoplasms/epidemiology , Patient Satisfaction , Adult , Antineoplastic Agents, Hormonal/therapeutic use , Boston , Breast Neoplasms/drug therapy , Breast Neoplasms/genetics , Breast Neoplasms/psychology , Female , Hospitals, Teaching , Humans , Learning , Mammography , Ovarian Neoplasms/genetics , Ovarian Neoplasms/psychology , Risk , Surveys and Questionnaires , Tamoxifen/therapeutic use
12.
Int J Cardiol ; 117(1): 115-22, 2007 Apr 12.
Article in English | MEDLINE | ID: mdl-16887210

ABSTRACT

BACKGROUND: The Women's Health Study of Accra was conducted to determine the burden of illness in a representative sampling of adult urban women. METHODS: This community-based survey selected study participants by a 2-stage cluster probability sample stratified by socioeconomic status based on the 2000 Ghanaian census data. It included a comprehensive household survey and medical and laboratory examination for 1328 women. Hypertension was defined as systolic blood pressure measurement > or = 140 mmHg or a diastolic of > or = 90 mmHg. RESULTS: A positive review of systems for hypertension was reported in 309 (23.7%) with only 52.5% using anti-hypertensive medication and only 4.4% had a normal blood pressure. The blood pressure measurement was elevated in 712/1303 (54.6%). Significant risk factors for an elevated blood pressure included age > or = 50 years (OR=14.24 [10.74,18.8], p<0.001); BMI > or = 30.00 (OR=2.89 [2.26,3.70], p<0.001); parity of three or more children (OR=5.16 [2.90,9.19], p<0.001); menopause before age 50 years (OR=5.88 [1.11,31.17], p=0.037); elevated fasting blood glucose (OR=3.98 [2.38,6.64], p<0.001); elevated fasting cholesterol (OR=1.69 [1.24, 2.30], p=0.001); no formal education (OR=2.75 [1.70,4.43], p<0.001) and first degree family history of hypertension (p<0.001). There was no association with income level, diet or activity. Significant protective factors include young age, nulliparity, normal BMI, and a lower than normal fasting LDL-cholesterol. CONCLUSION: The prevalence of presumptive hypertension is greater than anticipated. Public health initiatives to increase awareness of hypertension and to initiate and maintain treatment regimens will serve to improve the health of the women and the urban community.


Subject(s)
Cost of Illness , Hypertension/epidemiology , Urban Population/statistics & numerical data , Adolescent , Adult , Age Distribution , Aged , Aged, 80 and over , Antihypertensive Agents/therapeutic use , Blood Glucose , Cholesterol/blood , Comorbidity , Female , Ghana/epidemiology , Health Surveys , Humans , Hypertension/blood , Hypertension/drug therapy , Menopause , Middle Aged , Multivariate Analysis , Obesity/epidemiology , Odds Ratio , Parity , Pregnancy , Regression Analysis , Risk Factors , Socioeconomic Factors , Triglycerides/blood , Women's Health
13.
Health Qual Life Outcomes ; 4: 44, 2006 Jul 20.
Article in English | MEDLINE | ID: mdl-16857048

ABSTRACT

BACKGROUND: Cultural norms indicate that obesity reflects increased wealth and prosperity. Yet obesity is linked to serious medical illnesses. The purpose of this study was to determine if Ghanaian women would change their body image if it meant a healthier life. METHODS: A questionnaire was administered to 305 Ghanaian women waiting for clinic appointments at Korle Bu Teaching Hospital, Accra Ghana. This survey included questions on current health, selection of figural stimuli, decision making on health and social determinants and 5 questions on self-perception of health from SF-36. Anthropometric measures were taken and body mass index calculated. Women were also provided with health related information at the conclusion of the interview. RESULTS: The majority of all women surveyed would reduce their current body image if it meant that they would have an overall healthier life and reduce the risks of obesity-linked illnesses and complications. Currently obese women were significantly more likely than non-obese women to reduce their body image to reduce the risk of hypertension (OR 2.03 [1.64 - 2.51],<0.001); cardiovascular accident (OR 1.96 [1.61 - 2.38],<0.001); diabetes (OR 2.00 [1.63 - 2.44],<0.001); myocardial infarction (OR 2.27 [1.80 - 2.86],<0.001); if requested by a spouse(OR 2.64 [1.98 - 3.52],<0.001); and to improve overall health (OR 1.95 [1.60 - 2.37], <0.001). There was no association with current body image and responses to SF-36. The decision to select a new body image was not influenced by education, income, marital status or parity. Age 50 years old and less was significantly associated with the body image size reduction to reduce the risk of hypertension, diabetes, and a cardiovascular accident. CONCLUSION: The Ghanaian women interviewed in this study are interested in living a healthy life and are willing to reduce their body size to reduce the risk of obesity-linked illnesses. The target group for any interventional studies and measures to reduce obesity appears to be women age 50 and younger.


Subject(s)
Attitude to Health/ethnology , Health Behavior/ethnology , Obesity/ethnology , Self Concept , Women's Health/ethnology , Adolescent , Adult , Aged , Aged, 80 and over , Anthropometry , Body Image , Decision Making , Female , Ghana , Hospitals, Teaching , Humans , Middle Aged , Obesity/complications , Obesity/prevention & control , Social Conformity , Surveys and Questionnaires
14.
Am J Trop Med Hyg ; 73(1): 63-6, 2005 Jul.
Article in English | MEDLINE | ID: mdl-16014834

ABSTRACT

The Women's Health Study of Accra is a cross-sectional study designed to measure the burden of communicable and noncommunicable diseases in adult women residing in Accra, Ghana. This study assessed the prevalence rate of HIV and risk factors associated with HIV infection in 1,328 women age 18 years and older. The weighted overall HIV prevalence rate for women residing in Accra is 3.1%. The highest prevalence rate of HIV infections was identified in women age 25 to 29 years at 8.3%, OR (95%CI) 3.8 (1.68-8.33), P = 001. In addition to young age, other significant risk factors included sexually transmitted infection (STI) symptoms (OR 1.81 [1.14-2.87], P = 0.012) and mean number of lifetime sexual partners (P < 0.001). All HIV-positive women were sexually active. Other findings significantly associated with HIV-positive status included chills, oral lesions, tuberculosis, bloody sputum production, and intestinal parasite infections. There was a significant association with HIV-positive status and locality of residence in the city. There was no association with reported use of condoms, blood transfusions, surgery, reproductive health history including pregnancy or number of sexual partners, symptoms suggestive of AIDS, or self-perception of health. There was also no association with education level, religion, ethnicity, marital status, or socioeconomic level. This community-based study confirms the need to target young, sexually active women for HIV educational and preventive initiatives. A strong Ghanaian public health initiative to increase awareness of the risks of HIV and the link to STIs is critical at this time to prevent the further increase in HIV prevalence and the resultant HIV-associated illnesses.


Subject(s)
HIV Infections/epidemiology , Adolescent , Adult , Aged , Cross-Sectional Studies , Female , Ghana/epidemiology , HIV Infections/transmission , HIV Seroprevalence/trends , Health Status , Humans , Middle Aged , Prevalence , Risk Factors
15.
J Clin Oncol ; 22(24): 4951-7, 2004 Dec 15.
Article in English | MEDLINE | ID: mdl-15598980

ABSTRACT

PURPOSE: To explore the health-related and psychological factors that influence decision making about tamoxifen (Nolvadex; AstraZeneca, Waltham, MA) chemoprevention in women at increased risk for developing breast cancer. METHODS: This study involves the assessment of 129 women eligible to take tamoxifen following cancer-risk counseling. Treatment decision and decision satisfaction were measured at 2 and 4 months following counseling. Health-related factors included physician recommendation, personal and family-related health history, and concern about side effects. Psychological factors included breast cancer-related anxiety, risk perception, and depression. RESULTS: At 2 months' follow-up, 44% of participants declined tamoxifen treatment. This number increased to 49% at 4 months. Personal and family health history were not related to the decision, but history of abnormal biopsy did predict tamoxifen use. Physician recommendation was highly correlated with treatment decision. Concern about side effects was related to the decision to decline treatment. Breast cancer-related anxiety and heightened risk perception were associated with the decision to take tamoxifen. However, anxiety and psychological distress were also negatively related to treatment satisfaction. CONCLUSION: Decision-making about tamoxifen is complex, and many eligible women decline treatment or remain undecided. Findings call for further educational follow-up with high-risk women after they undergo initial counseling. Factors related to misperceptions of risk and side effects, as well as psychological distress, may be particularly important targets for intervention.


Subject(s)
Antineoplastic Agents, Hormonal/adverse effects , Antineoplastic Agents, Hormonal/therapeutic use , Breast Neoplasms/prevention & control , Breast Neoplasms/psychology , Decision Making , Practice Guidelines as Topic , Tamoxifen/adverse effects , Tamoxifen/therapeutic use , Adult , Aged , Anxiety , Breast Neoplasms/etiology , Chemoprevention , Counseling , Female , Genetic Predisposition to Disease , Humans , Medical History Taking , Middle Aged , Patient Education as Topic , Physician-Patient Relations , Risk Factors
19.
Oncogene ; 22(24): 3749-58, 2003 Jun 12.
Article in English | MEDLINE | ID: mdl-12802282

ABSTRACT

The tumor suppressor protein BRCA1 has been shown to enhance p53 transcription, whereas activated p53 represses BRCA1 transcription. To further understand the functional interaction of these proteins, we investigated the role of BRCA1 in p53-induced phenotypes. We found that BRCA1 when subjected to forced expression acts synergistically with wild-type p53, resulting in irreversible growth arrest, as shown by VhD mouse fibroblast cells expressing a temperature-sensitive mutant of p53. Furthermore, reintroduction of both BRCA1 and p53 into BRCA1(-/-)/p53(-/-) mouse embryonic fibroblasts markedly increased the senescence phenotype compared to that induced by p53 alone. In particular, we found that BRCA1 expression attenuated p53-mediated cell death in response to gamma-irradiation. Moreover, microarray screening of 11 000 murine genes demonstrated that a set of genes upregulated by p53 is enhanced by coexpression of BRCA1 and p53, suggesting that BRCA1 and p53 exert a promoter selectivity leading to a specific phenotype. Taken together, our results provide evidence that BRCA1 is involved in p53-mediated growth suppression rather than apoptosis.


Subject(s)
BRCA1 Protein/physiology , Tumor Suppressor Protein p53/physiology , Animals , Apoptosis , Cell Division , Cell Line , Cell Survival , DNA Damage , Mice , Oligonucleotide Array Sequence Analysis , Phenotype
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