肺癌肿瘤干细胞研究的科学方法论

肺癌肿瘤干细胞研究是肺癌与肿瘤干细胞学说交叉所形成的新研究领域,将根本改变临床肺癌防治的方式。反思从肿瘤干细胞学说的提出到肺癌肿瘤干细胞研究,树立自然辨证观念,用科学方法论指导肺癌肿瘤干细胞研究。     

Cancer Genetics Service Interest in Women with a Limited Family History of Breast Cancer

Women with a limited family history of breast cancer may be interested in cancer genetics information although their objective risk of breast cancer may not indicate routine referral to cancer genetics services. This study examined factors related to interest and use of cancer genetics services in a community sample of women with a limited family history of breast cancer (N = 187) who had no previous contact with cancer genetics services. Participants provided demographic information and ratings of perceived risk, cancer distress, attitudes, and intentions to initiate cancer genetics services. Participants were given information about a cancer genetics clinic that served women having concerns about their breast cancer risk. Women were contacted within 6 weeks and 8 months following their study appointment. Six weeks following their study appointment, 25% of women had initiated cancer genetics services. Eight months following their study appointment, 18% of women reported having completed a cancer genetics service appointment. Baseline intentions independently predicted both initiation at 6 weeks and appointment at 8 months. Cancer distress was positively associated with cancer genetics service initiation and appointment. Results suggest that some women with a limited family history of breast cancer are interested in seeking out cancer genetics information. Women with a limited family history of breast cancer may benefit from the availability of cancer genetics information provided through primary healthcare settings.     

肿瘤转移形成中癌细胞与基质之间的辩证关系

人们认识肿瘤的内在本质主要是通过它的表面形式即病理生物学行为来进行的,但因客观条件的限制,对其瘤细胞的内在特性和瘤细胞与胞外基质相互影响的认识还有限。因为肿瘤细胞在浸润与转移过程中有时并非与间质的反应情况相平行。由此要求我们正确认识肿瘤浸润转移过程中的对立统一规律,揭示隐蔽在其内部联系的本质和外部表现。     

Clinical Characterization and Risk Profile of Individuals Seeking Genetic Counseling for Hereditary Breast Cancer in Brazil

Hereditary breast cancer (HBC) accounts for 5–10% of breast cancer cases and it significantly increases the lifetime risk of cancer. Our objective was to evaluate the sociodemographic variables, family history of cancer, breast cancer (BC) screening practices and the risk profile of cancer affected or asymptomatic at-risk women that undergo genetic counseling for hereditary breast cancer in public Brazilian cancer genetics services. Estimated lifetime risk of BC was calculated for asymptomatic women using the Gail and Claus models. The majority of women showed a moderate lifetime risk of developing BC, with an average risk of 19.7% and 19.9% by the Gail and Claus models, respectively. The average prior probability of carrying a BRCA1/2 gene mutation was 16.7% and overall only 32% fulfilled criteria for a hereditary breast cancer syndrome as assessed by family history. We conclude that a significant number of individuals at high-risk for HBC syndromes may not have access to the benefits of cancer genetic counseling in these centers. Contributing factors may include insufficient training of healthcare professionals, disinformation of cancer patients; difficult access to genetic testing and/or resistance in seeking such services. The identification and understanding of these barriers is essential to develop specific strategies to effectively achieve cancer risk reduction in this and other countries were clinical cancer genetics is not yet fully established.     

腹腔镜胃癌手术的应用进展

腹腔镜胃癌手术是目前胃癌外科的热点与发展趋势,在早期采取腹腔镜手术的比例逐渐增多,早期胃癌的良好的临床疗效促进了腹腔镜进一步应用到进展期胃癌手术当中。本文概述了腹腔镜在早期胃癌及进展期胃癌的应用与进展,以及未来腹腔镜胃癌手术发展需要努力的方向。     

Use of the Behavioral Assessment System for Children 2nd Edition: Parent Report Scale in Pediatric Cancer Populations

This study examined the use of the Behavioral Assessment System for Children—2nd Edition: Parent Report Scale (BASC-2; Reynolds & Kamphaus, Behavior assessment system for children, 2004) in a pediatric cancer population. Comparisons of scale scores were made between pediatric cancer participants and controls. Within group comparisons were also made between subtypes of pediatric cancer. Parents of 111 children and adolescents who had experienced pediatric cancer completed the BASC-2 as part of larger studies of parent-child adjustment to cancer. Scores on the BASC-2 for cancer survivors were compared to a matched control group. Results from MANOVA analyses revealed that children with cancer were categorized as evidencing more emotional and cognitive complaints compared to the control children. Notably, no significant within group differences emerged on the subscales with regard to cancer subtype. Although preliminary, these results suggest that the BASC-2 can identify the cognitive and emotional differences between cancer survivors and controls.     

疼痛治疗方法在晚期癌痛病人中的应用

癌症是当今严重威胁人类健康和生命的疾病之一。解除癌症疼痛对改善晚期癌症患者的生存质量、延长生存期都具有十分重要的意义。癌痛的诊断和合理的疼痛评估是治疗癌痛的基础。癌症疼痛的治疗方法虽有多种,但其目的就是使用最佳方法解除患者痛苦,消除疼痛,从而提高生存质量。因此本文从科学的角度对晚期癌痛的治疗方法进行评价和阐述。     

Causal Attributions Predict Willingness to Support the Allocation of Funding to Lung Cancer Treatment Programs

Lung cancer patients may experience stigmatization as a result of the link between their disease and smoking, such as lack of public support for funding lung cancer treatment programs. This study examines whether causal attributions for the contraction of lung cancer predict the stigmatization of individuals with the disease by investigating willingness to support the allocation of funds to hypothetical lung cancer treatment programs. Participants were 766 undergraduate students. The findings indicate that participants who made causal attributions preferred to support the allocation of funding to programs that value the lives of breast cancer patients, rather than lung cancer patients. These findings have implications for understanding the influence of causal attributions on the stigmatization of lung cancer.     

Bias in the Reporting of Family History: Implications for Clinical Care

Family history of cancer is critical for identifying and managing patients at risk for cancer. However, the quality of family history data is dependent on the accuracy of patient self reporting. Therefore, the validity of family history reporting is crucial to the quality of clinical care. A retrospective review of family history data collected at a community hospital between 2005 and 2009 was performed in 43,257 women presenting for screening mammography. Reported numbers of breast, colon, prostate, lung, and ovarian cancer were compared in maternal relatives vs. paternal relatives and in first vs. second degree relatives. Significant reporting differences were found between maternal and paternal family history of cancer, in addition to degree of relative. The number of paternal family histories of cancer was significantly lower than that of maternal family histories of cancer. Similarly, the percentage of grandparents' family histories of cancer was significantly lower than the percentage of parents' family histories of cancer. This trend was found in all cancers except prostate cancer. Self-reported family history in the community setting is often influenced by both bloodline of the cancer history and the degree of relative affected. This is evident by the underreporting of paternal family histories of cancer, and also, though to a lesser extent, by degree. These discrepancies in reporting family history of cancer imply we need to take more care in collecting accurate family histories and also in the clinical management of individuals in relation to hereditary risk.     

Cancer fear and the interpretation of ambiguous information related to cancer

We tested the hypothesis that people with a high fear of cancer would be more likely to interpret ambiguous information about cancer in a negative manner compared with people low on cancer fear. Adults (n=47) aged 50–70, who scored either high (n=16) or low (n=31) on cancer fear, took part in a laboratory-based ambiguous sentences task. Participants were presented with ambiguous cancer and social threat scenarios mixed with unambiguous neutral scenarios. Interpretations were assessed in a recognition task, by asking participants to rate disambiguated sentences in terms of how similar in meaning they were to the originals. People high on cancer fear were more likely to endorse negative interpretations of the original ambiguous cancer scenarios than were people low on cancer fear. This negative interpretation bias was specific to cancer scenarios and was not observed for the social threat scenarios.     

Cancer and the threat of death: the cognitive dynamics of death-thought suppression and its impact on behavioral health intentions

Five studies examined the cognitive association between thoughts of cancer and thoughts of death and their implication for screening intentions. Study 1 found that explicit contemplation of cancer did not increase death-thought accessibility. In support of the hypothesis that this reflects suppression of death-related thoughts, Study 2 found that individuals who thought about cancer exhibited elevated death-thought accessibility under high cognitive load, and Study 3 demonstrated that subliminal primes of the word cancer led to increased death-thought accessibility. Study 4 revealed lower levels of death-thought accessibility when perceived vulnerability to cancer was high, once again suggesting suppression of death-related thoughts in response to conscious threats associated with cancer. Study 5 extended the analysis by finding that after cancer salience, high cognitive load, which presumably disrupts suppression of the association between cancer and death, decreased cancer-related self-exam intentions. Theoretical and practical implications for understanding terror management, priming and suppression, and responses to cancer are discussed.     

The role of positive thinking in social perceptions of cancer outcomes

Pressure for 'positive thinking' (PT; i.e., focusing on positive thoughts/suppressing negative thoughts to 'fight' cancer) burdens cancer patients facing health deterioration. It was determined whether PT exposure enhanced effort, control and responsibility attributions assigned to an individual for his/her cancer trajectory. Within an online blog a hypothetical same-gender person describes a personal cancer experience. 482 participants were assigned to one of six experimental conditions in which we manipulated PT exposure (blogger learns about 'power of PT' but does not try it, blogger tries PT, control/no PT) and cancer outcome (successful/unsuccessful treatment). A 3?×?2?×?2 multivariate analysis of covariance (with personal cancer experience covariates) tested PT exposure?×?cancer outcome?×?gender effects on attributions for the blogger's cancer outcome. Results indicate that PT exposure enhanced effort and responsibility attributions assigned to individuals for their cancer outcomes and that responsibility attributions differed as a function of gender. Findings suggest that exposure to the idea of PT may lead to cancer patients being perceived as culpable if they do not recover from the disease.     

Information processing and negative affect: evidence from the 2003 Health Information National Trends Survey.

OBJECTIVE: Health communication can help reduce the cancer burden by increasing processing of information about health interventions. Negative affect is associated with information processing and may be a barrier to successful health communication. DESIGN AND MAIN OUTCOME MEASURES: We examined associations between negative affect and information processing at the population level. Symptoms of depression (6 items) and cancer worry (1 item) operationalized negative affect; attention to health information (5 items) and cancer information-seeking experiences (6 items) operationalized information processing. RESULTS: Higher cancer worry was associated with more attention to health information (p<.01) and worse cancer information-seeking experiences (p<.05). More symptoms of depression were associated with worse information-seeking experiences (p<.01), but not with attention. CONCLUSIONS: We found population-level evidence that increased cancer worry is associated with more attention to health information, and increased cancer worry and symptoms of depression are associated with worse cancer information-seeking experiences. Results suggest that affect plays a role in health information processing, and decreasing negative affect associated with cancer communication may improve experiences seeking cancer information.     

肿瘤免疫编辑与免疫治疗

Schreiber等人于2002年提出肿瘤免疫编辑学说。肿瘤免疫编辑分为3个阶段:清除阶段、均衡阶段和逃逸阶段。肿瘤免疫编辑学说较全面的阐释了肿瘤与宿主免疫系统之间的复杂的相互作用。肿瘤免疫编辑学说对肿瘤免疫治疗具有一定的指导意义。依据肿瘤免疫治疗实践,提出了肿瘤免疫编辑和肿瘤免疫治疗的一些观点。     

突破制约肿瘤问题认识的瓶颈

用生物医学模式还原论方法考察肿瘤,肿瘤患者的共同特征都有癌肿,癌肿由异常细胞构成,癌细胞基因表型与正常细胞不同,肿瘤是分子疾病。用生物-心理-社会医学模式辩证法矛盾对立统一观点,从组织干细胞增殖与分化受阻的角度考察肿瘤疾病的种种现象,肿瘤起源于组织再生过程,细胞增殖与分化受阻这对矛盾贯穿肿瘤疾病始终。     

Higher frequency of left-breast cancer: a possible explanation

A study of 1027 women with unilateral breast cancer showed that ipsilateral breast cancer was more common before age 45 and contralateral thereafter. The data suggest a possible explanation of the higher incidence of left-breast cancer in American women. A higher percentage of left-handed women developed breast cancer before age 45, but the over-all incidence of unilateral breast cancer was not greater in left-handed women than in right-handed or ambihanded subjects.     

The role of positive thinking in social perceptions of cancer outcomes

Pressure for ‘positive thinking’ (PT; i.e. focusing on positive thoughts/suppressing negative thoughts to ‘fight’ cancer) burdens cancer patients facing health deterioration. It was determined whether PT exposure enhanced effort, control and responsibility attributions assigned to an individual for his/her cancer trajectory. Within an online blog a hypothetical same-gender person describes a personal cancer experience. 482 participants were assigned to one of six experimental conditions in which we manipulated PT exposure (blogger learns about ‘power of PT’ but does not try it, blogger tries PT, control/no PT) and cancer outcome (successful/unsuccessful treatment). A 3?×?2?×?2 multivariate analysis of covariance (with personal cancer experience covariates) tested PT exposure?×?cancer outcome?×?gender effects on attributions for the blogger's cancer outcome. Results indicate that PT exposure enhanced effort and responsibility attributions assigned to individuals for their cancer outcomes and that responsibility attributions differed as a function of gender. Findings suggest that exposure to the idea of PT may lead to cancer patients being perceived as culpable if they do not recover from the disease.     

血小板计数升高对肺癌诊断的临床参考价值

为了探讨血小板计数（blood platelet count,BPC）升高对肺癌诊断的临床参考价值,收集335例肺癌患者和157例肺部良性病变患者术前BPC和相应的,临床病理资料,应用SPSS统计软件分析BPC与肺癌临床病理的关系。结果显示,BPC在肺癌患者显著高于肺良性病变者;BPC在肿瘤直径较大（d〉3cm）的肺癌...     

Healing Faith: A Qualitative Exploration of Latina Breast Cancer Survivors

Latina cancer survivors report higher levels of distress and depression and lower levels of social quality of life and overall health‐related quality of life when compared with all other cancer survivors. Cultural values influence cancer survivorship; however, little research to date has examined how aspects of the Latina culture may be healing during the cancer journey. Therefore, the purpose of this article is to present findings from a qualitative study exploring the influence of culture on quality of life for Latina breast cancer survivors. The authors use consensual qualitative research to understand the lived experiences of Latina breast cancer survivors.     

肿瘤干细胞起源与鉴定方法研究现状

CSC理论使人们对恶性肿瘤有了一个全新的认识,为临床治疗提供了一个全新视角。该理论改变目前以全部癌细胞为目标的药物治疗策略,将使治愈肿瘤成为可能。分离和鉴定CSC是CSC靶向治疗的第一步。本文就CSC的起源和鉴定方法做一简要综述。