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1.
Sci Rep ; 13(1): 14511, 2023 09 04.
Artigo em Inglês | MEDLINE | ID: mdl-37666933

RESUMO

Infertility has been recognized as a distressing experience among couples worldwide, cutting across various cultures. This present study was conducted to assess the impact of a supportive stress management program led by an infertility coach for women undergoing fertility treatment. This randomized controlled clinical trial study was performed on 60 infertile women undergoing assisted reproductive techniques at Maryam Infertility Center located in Sari in 2018. After random allocation in two groups, 30 individuals were in the intervention group and 30 in the control group. The intervention program was implemented according to the infertility coach's counseling protocol in six stages. The control group received only routine ward counseling. In order to measure stress, the Newton Infertility Stress Questionnaire was used firstly before intervention and then after oocyte puncture, embryo transfer, and pregnancy testing. Data analysis was performed using SPSS statistical software version 18 and Shapiro-Wilk, Chi-square, Mann-Whitney, independent t-test, Friedman test, Wilcoxon test, GEE test, and Cohen's effect size. Our analysis approach has also been based on the analysis of (ITT). The significance level was 0.05. The mean ± SD scores of infertility perceived stress before the intervention in the control was 146.16 ± 16.90 and the intervention group was 156.53 ± 9.31, after intervention at the time of oocyte puncture in the controls was 165.36 ± 8.98 and the intervention group was 155.83 ± 10.70, at the day of embryo transfer in the control group was 156.35 ± 14.45 and in the intervention group was 123.58 ± 22.9 and in the pregnancy test day in the control group was 185.76 ± 26.56 and in the intervention group was 127.61 ± 21.57 (P < 0.001). According to Friedman test, the mean of stress in three situations after the intervention showed a significant difference in reduction of the mean of stress (P < 0.001). In the control group, the stress score of the samples had an increasing trend, which was significant during the measurement steps based on Friedman test results (P < 0.001). In the intervention group, paired t-test results showed no significant comparing mean score of Newton's infertility stress before and after oocyte puncture day (P = 0.711), comparing the mean of stress before and after pregnancy test day (P = 0.003) and also comparing of mean stress before and after pregnancy on the day of embryo transfer according to Wilcoxon test (P < 0.001). And comparing mean stress before and after pregnancy test day, paired t-test (P = 0.001) showed significant statistical differences. According to the results of the GEE test, changes in stress scores over time were significant between the two groups (P < 0.001), as well as the effect of stress on oocyte puncture day (0.41), embryo transfer day (1.69), pregnancy test day (P < 0.001) (2.46) had a significant effect on the day of embryo transfer and pregnancy test day. Based on the results of this study, the infertility coach program demonstrated the ability to decrease the perceived stress related to infertility. Additionally, it showed potential in enhancing treatment outcomes, such as oocyte count and positive pregnancy results, among infertile women undergoing assisted reproductive techniques.Trial registration: Iranian Registry for Clinical Trial (the link to trial: https://www.irct.ir/trial/33357 ). Registered 11-11-2018.


Assuntos
Infertilidade Feminina , Tutoria , Feminino , Humanos , Gravidez , Fertilidade , Infertilidade Feminina/terapia , Irã (Geográfico) , Estresse Psicológico/terapia
2.
Int J Reprod Biomed ; 20(2): 91-100, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-35434478

RESUMO

Background: Infertility is an abnormal event in the life of families and can have various consequences on a personal and social level. Therefore, infertile couples need to manage their emotional responses. Social capital, as one of the social determinants of health, can affect mental health. Objective: This study was conducted to determine the relationship between social capital and emotional adjustment in infertile couples. Materials and Methods: This cross-sectional study was conducted from October 2018 to February 2019 with 170 infertile couples visiting infertility centers in Sari, Iran. The data collection instruments included the social capital integrated questionnaire, an emotional adjustment scale and a demographic-reproductive checklist. Results: All the social capital dimensions, except for the groups and networks dimension, had a score of higher than 50 (more than the mean score). Based on ANCOVA and the multiple linear regression results, the dimension of trust and solidarity had a significant negative relationship with emotional adjustment (p = 0.01), but no significant relationship was observed between the other social capital dimensions and emotional adjustment. Conclusion: The trust and solidarity dimension had a significant relationship with emotional adjustment in infertile couples. Accordingly, increasing mutual trust between neighborhood residents can strengthen social capital, and in turn, improve emotional adjustment in infertile couples.

3.
Biochem Genet ; 60(5): 1716-1732, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-35083607

RESUMO

Unexplained recurrent spontaneous abortion (URSA) is characterized by two or more consecutive pregnancy losses before the 20th week of gestation with unknown etiology. Dysregulation of microRNAs (miRNAs) expression has been reported in reproductive diseases. This study aimed to compare differentially expressed miRNAs in the serum samples between URSA patients and healthy individuals. URSA cases were confirmed by a gynecologist. Peripheral blood sample was gathered from 9 URSA patients, 15 normal pregnant, and 10 non-pregnant women without abortion history. After separating serum, the expression levels of the miR-101-3p, miR-517c-3p, miR-146b-5p, miR-221-3p, and miR-520 h were measured by qRT-PCR assay. The circulating level of miR-520 h in URSA patients was significantly up-regulated compared with healthy pregnant (P < 0.01) and healthy non-pregnant (P = 0.002) women. Furthermore, miR-520 h expression was significantly different between healthy non-pregnant and pregnant women (P = 0.002). Statistical analysis indicated miR-146b-5p expression was significantly up-regulated in URSA patients compared to normal pregnant women (P = 0.018). However, the transcription level of miR-146b-5p was insignificantly different between normal non-pregnant women and the other two groups. Also, circulating levels of miR-101-3p, miR-221-3p, and miR-517c-3p were not significantly different in the studied groups. Statistical analysis showed significant correlations between both miR-221-3p and miR-517c-3p and other miRNAs (P < 0.05). The circulating levels of miR-520 h and miR-146b-5p could be considered biomarkers for URSA diagnosis. Also, miR-517c-3p and miR-221-3p might play a regulatory role in other miRNAs expressions during pregnancy. Previous work, in contrary to our findings, claims that the expression levels of miR-221-3p, miR-101-3p, and miR-517c-3p increased in plasma and tissue samples of patients with URSA. However, our research for the first time indicates that the expression level of miR-520 h and miR-146b-5p in the serum of these patients has increased. Future investigations are necessary to confirm these findings.


Assuntos
Aborto Habitual , MicroRNAs , Aborto Habitual/genética , Biomarcadores , Feminino , Humanos , MicroRNAs/sangue , MicroRNAs/genética , Gravidez
4.
Fertil Res Pract ; 6: 7, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32313665

RESUMO

BACKGROUND: Infertile women are exposed more frequently to anxiety risk than are infertile men, thereby adversely affecting the procedures with which they are treated and the quality of their lives. Yet, this problem is often disregarded. This study accordingly determined the prevalence of anxiety symptoms among infertile women. METHODS: All Persian and English studies published from the early 2000s to May 2019 were searched in international (i.e., PubMed, the Cochrane Library, Web of Science, Scopus, Embase, and PsycINFO) and national (i.e., SID, Magiran) databases as well as through Google Scholar. After the titles and abstracts of the articles were reviewed, their quality was evaluated, and relevant works for examination were selected in consideration of established inclusion and exclusion criteria. The risk of biases of individual studies according to Newcastle - Ottawa Scale was assessed. The heterogeneity of the studies was assessed using the I2 statistic, and indicators of publication bias were ascertained using Egger's test. Stata (version 14) was employed in analyzing the findings. RESULTS: Thirteen studies having a collective sample size of 5055 infertile women were subjected to meta-analysis, with study heterogeneity incorporated into a random effects model. The findings indicated that 36% of the infertile women involved in the evaluated studies self-reported their experience with anxiety. The pooled prevalence of the condition among the subjects was 36.17% [95% confidence interval (CI): 22.47-49.87]. The pooled prevalence levels in low- and middle-income countries and high-income countries were 54.24% (95% CI: 31.86-78.62) and 25.05% (95% CI: 15.76-34.34), respectively. The results revealed no evidence of publication bias (P Egger's test = 0.406). CONCLUSION: Considering the prevalence of anxiety in infertile women and its effects on health processes and quality of life, this problem requires serious consideration and planning for effective intervention, especially in low- and middle-income nations.

5.
Int J Reprod Biomed ; 17(1)2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-31435585

RESUMO

BACKGROUND: One of the stressful and critical experiences that threat the individual, family, marital, and social stability is infertility. OBJECTIVE: To identify the effects of midwifery-led counselling programs on the perceived stress of the women undergoing assisted reproductive treatment. MATERIALS AND METHODS: In this randomized clinical trial, 50 infertile women who underwent in vitro fertilization treatment for the first time were enrolled in two groups. The intervention group received six sessions of group counselling by M.Sc. midwifery of counseling student and the control group received only the routine care. All participants filled Newton's standard questionnaire before and at the time of puncture, embryo transfer and the pregnancy test. RESULTS: The mean ± SD scores for the perceived infertility stress before the intervention in the control and the intervention groups were 167.92 ± 12.14 and 166.75 ± 13.27, respectively. The mean of perceived stress after intervention at the time of oocyte puncture in the control and case group were 177.12 ± 19.37 and 115.75 ± 13.88, at the time of embryo transfer were 179.40 ± 18.34 and 118.08 ± 15.37, and at the time of pregnancy test was 183.76 ± 14.97 and 120.50 ± 16.24, respectively. The perceived stress of infertility after intervention were statistically significant in the two group (p ≤ 0.001). CONCLUSION: Group counselling is one of the effective methods for reducing the perceived stress in the women undergoing assisted reproductive treatment.

6.
Indian J Nucl Med ; 32(1): 7-10, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28242975

RESUMO

PURPOSE OF THE STUDY: Low dose radiation will induce adaptation and following exposure to an adaptive dose, the cells are more resistance to following challenging doses. This phenomenon is known as radio-adaptive response. The aim of this study was to investigate the percentage of apoptotic cells in the peripheral blood samples of the patients which undergo myocardial perfusion imaging (MPI) with technetium-99m (Tc-99m) before thallium scan to assess the induction of radio-adaptive response. MATERIALS AND METHODS: In this study, 97 samples from 74 patients, referred to nuclear medicine center of Mazandaran Heart Hospital for MPI, which had no history of diagnostic, therapeutic, occupational, and radioactive exposures during past 2 years, were provided. The participants were classified into four groups including control, patients which were scanned solely with technetium, the patients which examined by thallium and the last group were the patients that examined by technetium followed by thallium. Then 2 ml Peripheral blood samples were obtained, and after 24 h incubating, the samples were studied by neutral comet assay. Statistical analysis was carried out using Student's t-test along with one-way analysis of variance. RESULTS: The mean percentage of apoptotic cells in the exposed groups were higher than the control. Furthermore, among exposed groups, the apoptotic cells in thallium group were more than others and this index was significantly lower in the group which was undergone technetium administration before thallium scan. CONCLUSIONS: These findings suggest that exposure to Tc-99m could induce a radio-adaptive response against the exposure of thallium-201.

7.
Iran Biomed J ; 21(3): 182-9, 2017 05.
Artigo em Inglês | MEDLINE | ID: mdl-27869251

RESUMO

BACKGROUND: Phototherapy is believed to be a safe method for the management of hyperbilirubinemia. However, there are some controversial issues regarding the genotoxic effects of phototherapy on DNA. The aim of this study was to investigate morphologically both phototherapy-induced DNA double-strand breaks (DSBs) and apoptosis in lymphocytes derived from jaundiced and non-jaundiced neonates. METHODS: Newborns were divided into three groups, including phototherapy-treated (PT, n=30) jaundiced newborns with total serum bilirubin (TSB) levels >15 mg/dl, non-treated jaundiced newborns (C+, n=27), as positive, as well as healthy negative (C-, n=30) controls with TSB levels ranging from 10 and 15 mg/dl and less than 5 mg/dl, respectively. Lymphocytes were isolated from whole blood samples by Ficoll-isopaque density gradient centrifugation and then assessed for DNA damage and apoptosis before and 24 hours after incubation at 37°C in 5% CO2 using the neutral comet assay. RESULTS: DSB levels were significantly much higher in the PT group compared to the controls before incubation but decreased remarkably after the incubation period. As expected, no statistical differences were found between the two control groups before and after incubations. The frequency of apoptotic cells showed no significant differences among all the three groups before incubation; however, it was significantly increased in the PT group after incubation. CONCLUSION: It seems that phototherapy in jaundiced infants is able not only to induce apoptosis in newborn lymphocytes but also to affect indirectly DNA integrity.


Assuntos
Dano ao DNA , Hiperbilirrubinemia/patologia , Hiperbilirrubinemia/terapia , Linfócitos/patologia , Mutagênicos/toxicidade , Fototerapia , Apoptose/efeitos dos fármacos , Contagem de Células , Demografia , Feminino , Humanos , Recém-Nascido , Linfócitos/efeitos dos fármacos , Masculino
8.
J Med Phys ; 41(1): 52-7, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27051171

RESUMO

The present work was designed to assess the radioprotective effect of royal jelly (RJ) against radiation-induced apoptosis in human peripheral blood leukocytes. In this study, peripheral blood samples were obtained on days 0, 4, 7, and 14 of the study from six healthy male volunteers taking a 1000 mg RJ capsule orally per day for 14 consecutive days. On each sampling day, all collected whole blood samples were divided into control and irradiated groups which were then exposed to the selected dose of 4 Gy X-ray. Percentage of apoptotic cells (Ap %) was evaluated for all samples immediately after irradiation (Ap0) and also after a 24 h postirradiation incubation at 37°C in 5% CO2 (Ap24) by the use of neutral comet assay. Concerning Ap0, collected data demonstrated that the percentage of apoptotic cells in both control and irradiated groups did not significantly change during the study period. However, with respect to Ap24, the percentage of apoptotic cells in irradiated groups gradually reduced during the experiment, according to which a significant decrease was found after 14 days RJ consumption (P = 0.002). In conclusion, the present study revealed the protective role of 14 days RJ consumption against radiation-induced apoptosis in human peripheral blood leukocytes.

9.
Glob J Health Sci ; 8(5): 96-109, 2015 Sep 02.
Artigo em Inglês | MEDLINE | ID: mdl-26652079

RESUMO

BACKGROUND: Many factors impact on marital satisfaction. Related factors include demographic factors, assisted reproductive techniques, psychological health, quality of life, psychological, socioeconomic and family support, and sexual function. METHODS: This study is a literature review of research studies conducted on factors associated with marital satisfaction in infertile couples. The current literature review search was undertaken using multiple databases selected from articles pertinent to the study. The selection of subjects was undertaken from1990 through 2015. The methodological quality was analyzed based on a checklist adopted from a systematic review. Quality assessment of full text studies was finally carried out by two reviewers. RESULTS: The initial search yielded a list of 445 papers, and then reviewers studied titles and abstracts. Thereafter, 69 papers were incorporated, and researchers reviewed summaries of all of the searched articles. Finally, the researchers utilized the data gained from 64 full articles so as to compile this review paper. Reviewing the studies conducted on marital satisfaction, they classified related findings into 6 categories: demographic factors, using fertility assisting methods, psychological health, life quality, economic, social, and family support, and sexual function. CONCLUSION: The results of this review article depicted that various factors play role in creating marriage life satisfaction in an infertile couple, so that paying attention to them can play an important role in continuing their treatment. Thus, to identify such factors is considered essential in their treatment protocol highly based on culture. Of the drawbacks of this research is that it has tried at best to employ the studies belonging to diverse countries with different cultures. Also, the number of the papers was considerably limited.


Assuntos
Características da Família , Infertilidade/psicologia , Casamento/psicologia , Satisfação Pessoal , Qualidade de Vida/psicologia , Humanos , Saúde Mental , Orgasmo , Técnicas de Reprodução Assistida/psicologia , Apoio Social , Fatores Socioeconômicos
10.
Nature ; 513(7519): 551-4, 2014 Sep 25.
Artigo em Inglês | MEDLINE | ID: mdl-25079316

RESUMO

Mesenchymal stem cells occupy niches in stromal tissues where they provide sources of cells for specialized mesenchymal derivatives during growth and repair. The origins of mesenchymal stem cells have been the subject of considerable discussion, and current consensus holds that perivascular cells form mesenchymal stem cells in most tissues. The continuously growing mouse incisor tooth offers an excellent model to address the origin of mesenchymal stem cells. These stem cells dwell in a niche at the tooth apex where they produce a variety of differentiated derivatives. Cells constituting the tooth are mostly derived from two embryonic sources: neural crest ectomesenchyme and ectodermal epithelium. It has been thought for decades that the dental mesenchymal stem cells giving rise to pulp cells and odontoblasts derive from neural crest cells after their migration in the early head and formation of ectomesenchymal tissue. Here we show that a significant population of mesenchymal stem cells during development, self-renewal and repair of a tooth are derived from peripheral nerve-associated glia. Glial cells generate multipotent mesenchymal stem cells that produce pulp cells and odontoblasts. By combining a clonal colour-coding technique with tracing of peripheral glia, we provide new insights into the dynamics of tooth organogenesis and growth.


Assuntos
Diferenciação Celular , Linhagem da Célula , Incisivo/citologia , Células-Tronco Mesenquimais/citologia , Neuroglia/citologia , Animais , Rastreamento de Células , Células Clonais/citologia , Polpa Dentária/citologia , Feminino , Incisivo/embriologia , Masculino , Camundongos , Modelos Biológicos , Crista Neural/citologia , Odontoblastos/citologia , Regeneração , Células de Schwann/citologia
11.
Science ; 345(6192): 82-7, 2014 Jul 04.
Artigo em Inglês | MEDLINE | ID: mdl-24925909

RESUMO

The peripheral autonomic nervous system reaches far throughout the body and includes neurons of diverse functions, such as sympathetic and parasympathetic. We show that the parasympathetic system in mice--including trunk ganglia and the cranial ciliary, pterygopalatine, lingual, submandibular, and otic ganglia--arise from glial cells in nerves, not neural crest cells. The parasympathetic fate is induced in nerve-associated Schwann cell precursors at distal peripheral sites. We used multicolor Cre-reporter lineage tracing to show that most of these neurons arise from bi-potent progenitors that generate both glia and neurons. This nerve origin places cellular elements for generating parasympathetic neurons in diverse tissues and organs, which may enable wiring of the developing parasympathetic nervous system.


Assuntos
Células-Tronco Neurais/citologia , Neurogênese , Neuroglia/citologia , Neurônios/citologia , Sistema Nervoso Parassimpático/embriologia , Animais , Fatores de Transcrição Hélice-Alça-Hélice Básicos/genética , Fatores de Transcrição Hélice-Alça-Hélice Básicos/metabolismo , Gânglios Parassimpáticos/citologia , Gânglios Parassimpáticos/embriologia , Camundongos , Camundongos Mutantes , Células-Tronco Neurais/metabolismo , Técnicas de Rastreamento Neuroanatômico/métodos , Neuroglia/metabolismo , Neurônios/metabolismo , Sistema Nervoso Parassimpático/citologia , Fatores de Transcrição SOXE/genética , Fatores de Transcrição SOXE/metabolismo , Células de Schwann/citologia , Células de Schwann/metabolismo
12.
Ther Apher Dial ; 16(6): 600-4, 2012 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-23190522

RESUMO

Serum receptor activator of nuclear factor-κ B ligand and osteoprotegrin are mediated to vascular calcification in the general population. Our knowledge is very sparse in hemodialysis and renal transplant patients. Receptor activator of nuclear factor-κ B ligand, osteoprotegrin, intact parathyroid hormone, calcium, and phosphorus were measured in blood samples of 45 hemodialysis and 45 age-matched renal transplant patients. Osteoprotegrin (P = 0.001) and intact parathyroid hormone (P = 0.001) levels in the hemodialysis patients were higher than the renal transplant recipients. Osteoprotegrin had positive correlation with duration of dialysis and age in the hemodialysis (r = 0.88, P = 0.001 and r = 0.34, P = 0.02, respectively) and renal transplant patients (r = 0.92, P = 0.001 and r = 0.46, P = 0.001, respectively). Hemodialysis patients have higher osteoprotegrin levels than the renal transplant recipients. It may act as a protective factor for renal osteodystrophy or only as a secondary phenomenon of advanced renal failure.


Assuntos
Transplante de Rim , Osteoprotegerina/sangue , Hormônio Paratireóideo/sangue , Ligante RANK/sangue , Diálise Renal , Adulto , Fatores Etários , Calcinose/patologia , Cálcio/sangue , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Fósforo/sangue , Insuficiência Renal/cirurgia , Insuficiência Renal/terapia , Fatores de Tempo
13.
Iran Biomed J ; 14(3): 67-75, 2010 07.
Artigo em Inglês | MEDLINE | ID: mdl-21079656

RESUMO

BACKGROUND: Impaired DNA repair mechanism is one of the main causes of tumor genesis. Study of intrinsic radiosensitivity of cancer patients in a non-target tissue (e.g. peripheral blood) might show the extent of DNA repair deficiency of cells in affected individuals and might be used a predictor of cancer predisposition. METHODS: Initial radiation-induced DNA damage (ratio of Tail DNA/Head DNA), dose-response curves and kinetics of DNA repair in leukocytes from healthy volunteers and prostate cancer patients were assessed using alkaline comet assay after exposure to 60Co gamma rays. RESULTS: Results showed that higher levels of baseline and gamma rays induced DNA damage in leukocytes of prostate cancer cases than in controls. A similar dose response was obtained for both groups. After a repair time of 24 h following in vitro irradiation, samples from the healthy individuals showed no residual DNA damage in their leukocytes, whereas prostate cancer patients revealed more than 20 percent. Although similar initial radiosensitivity was observed for both groups, the repair kinetics of radiation induced DNA damage of leukocytes from prostate cancer cases and healthy subjects were statistically different. CONCLUSION: These results support the hypothesis that men affected by prostate cancer may have a constitutional genomic instability.


Assuntos
Ensaio Cometa/métodos , Reparo do DNA/efeitos da radiação , Raios gama , Saúde , Leucócitos/efeitos da radiação , Neoplasias da Próstata/patologia , Tolerância a Radiação/efeitos da radiação , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos de Casos e Controles , Dano ao DNA , Relação Dose-Resposta à Radiação , Humanos , Cinética , Leucócitos/patologia , Masculino , Pessoa de Meia-Idade
14.
Reprod Toxicol ; 29(1): 120-4, 2010 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-19761829

RESUMO

DNA fragmentation in human sperm has been related to endogenous and exogenous factors. Exogenous factors can also affect leukocyte DNA integrity. This study evaluated the relation between sperm DNA damage and leukocyte DNA integrity, as a predictor of exogenous factors. DNA damage in the sperm and leukocytes of 41 individuals undergoing ICSI were measured by Comet assay. In addition, sperm chromatin dispersion (SCD) was carried out on semen samples. A positive correlation was observed between the DNA integrity of sperm with leukocytes. When patients were divided into low and high DNA exposure groups, sperm DNA fragmentation was significantly different between the two groups. Cleavage rate and embryo quality showed significant correlation with leukocyte DNA integrity. The results showed that leukocyte DNA integrity could be used to identify individuals at high risk in order to reduce the extent of DNA damage in patients before ICSI in order to improve the subsequent outcome of this procedure.


Assuntos
Dano ao DNA , Leucócitos/química , Espermatozoides/química , Adulto , Ensaio Cometa , DNA/análise , DNA/sangue , Fragmentação do DNA , Desenvolvimento Embrionário , Poluentes Ambientais , Feminino , Temperatura Alta , Humanos , Masculino , Exposição Ocupacional , Gravidez , Fumar , Injeções de Esperma Intracitoplásmicas
15.
Cancer Lett ; 257(2): 263-73, 2007 Nov 18.
Artigo em Inglês | MEDLINE | ID: mdl-17881118

RESUMO

Initial radiation-induced DNA damage, dose-response curves and kinetics of DNA repair in leukocytes from healthy volunteers and breast cancer patients, was assessed using alkaline and neutral comet assay after exposure to (60)Co gamma rays. Both versions of comet assay showed higher levels of baseline DNA damage in leukocytes of breast cancer cases than in controls. Gamma ray induced initial DNA damage in leukocytes of cancer cases was not significantly different from that of healthy donors. A similar dose-response was obtained with both versions of comets for two groups. After a repair time of 24h, following irradiation, samples from the healthy individuals showed no residual DNA damage in their leukocytes, whereas breast cancer patients revealed more than 20%. Although similar initial radiosensitivity was observed for both groups but the repair kinetics of radiation-induced DNA damage of leukocytes from breast cancer cases and healthy subjects was statistically different.


Assuntos
Neoplasias da Mama/genética , Ensaio Cometa/métodos , Dano ao DNA , Leucócitos/efeitos da radiação , Adulto , Idoso , Idoso de 80 Anos ou mais , Neoplasias da Mama/sangue , Células Cultivadas , Radioisótopos de Cobalto , Reparo do DNA , Relação Dose-Resposta à Radiação , Feminino , Raios gama , Humanos , Cinética , Leucócitos/citologia , Leucócitos/metabolismo , Linfócitos/citologia , Linfócitos/metabolismo , Linfócitos/efeitos da radiação , Pessoa de Meia-Idade
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