The measurement of coping in breast cancer patients

Are Cementoblasts a Subpopulation of Osteoblasts or a Unique Phenotype?

Experimental studies have shown a great potential for periodontal regeneration. The limitations of periodontal regeneration largely depend on the regenerative potential at the root surface. Cellular intrinsic fiber cementum (CIFC), so-called bone-like tissue, may form instead of the desired acellular extrinsic fiber cementum (AEFC), and the interfacial tissue bonding may be weak. The periodontal ligament harbors progenitor cells that can differentiate into periodontal ligament fibroblasts, osteoblasts, and cementoblasts, but their precise location is unknown. It is also not known whether osteoblasts and cementoblasts arise from a common precursor cell line, or whether distinct precursor cell lines exist. Thus, there is limited knowledge about how cell diversity evolves in the space between the developing root and the alveolar bone. This review supports the hypothesis that AEFC is a unique tissue, while CIFC and bone share some similarities. Morphologically, functionally, and biochemically, however, CIFC is distinctly different from any bone type. There are several lines of evidence to propose that cementoblasts that produce both AEFC and CIFC are unique phenotypes that are unrelated to osteoblasts. Cementum attachment protein appears to be cementum-specific, and the expression of two proteoglycans, fibromodulin and lumican, appears to be stronger in CIFC than in bone. A theory is presented that may help explain how cell diversity evolves in the periodontal ligament. It proposes that Hertwig’s epithelial root sheath and cells derived from it play an essential role in the development and maintenance of the periodontium. The role of enamel matrix proteins in cementoblast and osteoblast differentiation and their potential use for tissue engineering are discussed.

Root Lengths in 47,XYY Males’ Permanent Teeth

Studies on individuals with sex chromosome anomalies have demonstrated the promoting effect of the Y chromosome on tooth crown enamel and dentin growth. The present research investigated permanent tooth root lengths in 47,XYY males. The measurements were made from panoramic radiographs. The results indicate longer tooth roots in 47,XYY males compared with those in control males and females. The promoting effect of the Y chromosome on dental growth thus continues in the form of root dentin after the completion of crown growth. The results, together with those on tooth crown sizes in 47,XYY males, suggest that growth excesses are evident and final, beginning a few months after birth and continuing up to the age of 14 years, at least. The excess root dentin growth in 47,XYY males, as well as sexual dimorphism in the growth of crown and root dentin, might be caused by the same factor on the Y chromosome.

Health Psychology in Context

Over 25 years there has been a remarkable growth of theoretical and empirical studies in health psychology. Its theoretical underpinnings have been largely derivative, its focus primarily clinical, and its subject, the individual. Relatively little attention has been paid to the cultural, sociopolitical and economic conditions which set the context for individual health experience and behaviour. Theories which do not reflect the complex interaction of these variables are unlikely to provide a satisfactory account of individual health. Multidisciplinary efforts are needed at a community level to provide effective interventions which are relevant to the exposure groups being targeted. Health psychology needs measures which are valid and relevant to the general population regardless of culture, gender, social class or age. Putting health psychology into its cultural, sociopolitical and community context is a major priority for future development.

Novel Golgi protein, GoPro49, is a specific dental follicle marker

GoPro49 is a recently identified, novel Golgi protein that is expressed in embryonic mesenchymal tissues, including dental follicle. In the present study, we have tested the hypothesis that the gene is a specific marker for the dental follicle, and examined its expression during the development of mouse incisors and molars. In situ hybridization showed that GoPro49 is expressed in dental follicles from bud to post-eruption stages. The expression is intense throughout the dental follicle during crown development, and persists in the root follicle during root development. In the forming periodontal ligament, GoPro49 expression is down-regulated upon differentiation of the follicle cells to cementoblasts and osteoblasts marked by Bsp1. In cultured dental follicle cells, the GoPro49 protein co-localizes with beta-COP, suggesting that GoPro49 may function in the secretory pathway. We conclude that GoPro49 is a novel, specific marker for the dental follicle and can be used to identify this tissue.

ABBREVIATIONS

Bsp1, bone sialoprotein 1; GoPro49, Golgi protein 49 kDa; E16, embryonic day 16; HERS, Hertwig's epithelial root sheath; PDL, periodontal ligament; dpn, day post-natal.

Modulation of epithelial cell fate of the root in vitro

Mouse molars are normally not capable of continuous growth. We hypothesized that the mouse molar has intrinsic potential to maintain the epithelial stem cell niche and assessed this potential by growth in vitro. Although the tooth germs flattened considerably, they developed a mineralized crown and a root. However, histologically, the root surface was composed of 3 structurally different regions affecting the fate of the dental epithelium. The anterior and posterior aspects maintained the morphological and molecular characteristics of the cervical loop of a continuously growing incisor, with a continuous layer of ameloblasts. The epithelium making contact with the supporting filter resembled Hertwig's epithelial root sheath. The top of the cultured molar exposed to air lacked epithelium altogether. We conclude that the fate of the epithelium is regulated by external cues influenced by culture conditions, and that the molar has the intrinsic capacity to grow continuously.

Brief psychotic disorder mimicking the symptoms of cerebrovascular attack evoked by symptoms that symbolized death in a patient with terminal stage stomach cancer: case report and review of the literature

OBJECTIVE

We report here a terminally ill patient with stomach cancer who developed a brief psychotic disorder mimicking cerebrovascular attack after a short episode of nasal bleeding. Close examination of the patient revealed that nasal bleeding was an event that symbolized deterioration of the general condition leading to death for the patient.

METHODS

A 77-year-old male, who was diagnosed as having stomach cancer and was receiving palliative care, presented with tremor and insomnia just after a short episode of nasal bleeding and showed reduced response to stimuli mimicking cerebrovascular attack. Laboratory data were unremarkable. The next day, catatonic behavior developed. He had no history of psychiatric illness or drug or alcohol abuse. After receiving haloperidol, psychiatric symptoms disappeared and he returned to the previous level of functioning within 3 days. The patient explained that he had seen a patient whose general condition deteriorated after nasal bleeding and regarded nasal bleeding as a symptom of deteriorating general condition leading to death and thereafter became afraid of the nasal bleeding.

RESULTS AND SIGNIFICANCE OF RESULTS

Although, nasal bleeding is common and usually not severe in medical settings, for the patient, it was an event that symbolized deterioration of the general condition leading to death. Brief psychotic disorder in cancer patients is rare in the literature, although patients receiving terminal care share various kinds of psychological burden. Medical staff in the palliative care unit should be aware of the psychological distress experienced by each patient and consider brief psychotic disorder as part of the differential diagnosis when patients show unexplained neurological-like and/or psychiatric symptoms.

Psychological outcome of patients following treatment of oral cancer and its relation with functional status and coping mechanisms

BACKGROUND

Traditionally health-care providers have measured outcome of treatment of disease by focusing on tumour response and disease-free survival. However, it has become increasingly apparent that the behavioural and functional impact of treatment on the patient is important. This study investigates the psychological outcome and its relationship with functional status and coping mechanisms following treatment of oral cancer patients.

MATERIAL AND METHODS

Sixty-eight patients were evaluated 6 months to 6 years after treatment (from October 1992 to October 1997) for oral cancer. The Hospital Anxiety and Depression Scale (HADS) was used for psychological evaluation, the University of Washington Quality of Life Questionnaire (UW-QOL) and The European Organisation for Research and Treatment of Cancer Questionnaire (EORTC QLQ-C30) for evaluating the head and neck specific and general functional status, respectively. Finally, the "Mental Adjustment to Cancer Questionnaire" (MAC-Q) was used for evaluation of coping mechanisms.

RESULTS

The incidence of anxiety and/or depression was 25% and the socio-demographic and medical characteristics showed poor correlation with the psychological outcome in this study. The results indicated that there was a strong association between psychological outcome and head and neck specific and general quality-of-life (QOL) domains, and style of coping. The p-value was less than 0.01 for most of the domains and items of functional status and the effective coping style.

CONCLUSION

Deteriorated functional status and ineffective coping strategies are strongly associated with poor psychological outcome in patients with oral cancer.

A comparative study of coping skills and body image: Mastectomized vs. lumpectomized patients with breast carcinoma

BACKGROUND

The diagnosis of breast cancer encompasses not only physical, but also social and psychological implications because of the importance of the breast in a woman's body image, sexuality and motherhood. Women may experience a range of concerns and fears including physical appearance and disfigurement, the uncertainty about recurrence and the fear of death. There are no Indian studies on this subject.

AIM

This study explores the various concerns of mastectomized and lumpectomized (breast conserved) patients, determines the coping mechanisms employed and the resolution of concerns. The levels of anxiety and depression in both groups were also studied.

METHODS

Seventy-five patients with breast carcinoma (50 mastectomized and 25 lumpectomized) were evaluated. The concern and coping checklist of Devlen was used. The severity of anxiety and depression was measured using the Hospital Anxiety and Depression Scale (HADS).

RESULTS

Body image or disfigurement was a concern only in the mastectomized group. Concerns were equally resolved between the two groups except for sexual role and performance, wherein the concern was resolved to a lesser extent in the mastectomized group. Coping strategies employed were effective in the resolution of concerns except for sexual role and performance, and recurrence or relapse. No statistically significant difference was found in the depression and anxiety levels of the two groups.

CONCLUSION

Concern regarding sexual role and performance was resolved to a lesser extent in the mastectomized group. Specific psychological intervention is necessary to enhance coping strategies with regard to concerns of body image, and sexual role and performance.

Histological and immunohistochemical studies of tissue engineered odontogenesis

The successful regeneration of complex tooth structures based on tissue-engineering principles was recently reported. The process of this regeneration, however, remains poorly characterized. In this study, we have used histochemistry to examine the regeneration process of tissue engineered teeth in order to determine the cell types that give rise to these engineered tooth structures. Porcine third molar tooth buds were dissociated into single-cell suspensions and seeded onto a biodegradable polyglycolic acid polymer scaffold. Following varying periods of growth in rat hosts, the specimens were evaluated by histology and immunohistochemistry. Aggregates of epithelial cells were first observed 4-6 weeks after implantation. These aggregates assumed three different shapes: a natural tooth germ-like shape, a circular shape, or a bilayer-bundle. Based on the structure of the stellate reticulum in the dental epithelium, the circular and bilayer-bundle aggregates could be clearly classified into two types: one with extensively developed stellate reticulum, and the other with negligible stellate reticulum. The epithelial cells in the circular aggregates differentiated into ameloblasts. The continuous bilayer bundles eventually formed the epithelial sheath, and dentin tissue was evident at the apex of these bundles. Finally, enamel-covered dentin and cementum-covered dentin formed, a process most likely mediated by epithelial-mesenchymal interaction. These results suggest that the development of these engineered teeth closely parallels that of natural odontogenesis derived from the immature epithelial and mesenchymal cells.

Expression of bone morphogenetic proteins and Msx genes during root formation

Like crown development, root formation is also regulated by interactions between epithelial and mesenchymml tissues. Bone morphogenetic proteins (BMPs), together with the transcription factors Msx1 and Msx2, play important roles in these interactions during early tooth morphogenesis. To investigate the involvement of this signaling pathway in root development, we analyzed the expression patterns of Bmp2, Bmp3, Bmp4, and Bmp7 as well as Msx1 and Msx2 in the roots of mouse molars. Bmp4 was expressed in the apical mesenchyme and Msx2 in the root sheath. However, Bmps were not detected in the root sheath epithelium, and Msx transcripts were absent from the underlying mesenchyme. These findings indicate that this Bmp signaling pathway, required for tooth initiation, does not regulate root development, but we suggest that root shape may be regulated by a mechanism similar to that regulating crown shape in cap-stage tooth germs. Msx2 expression continued in the epithelial cell rests of Malassez, and the nearby cementoblasts intensely expressed Bmp3, which may regulate some functions of the fragmented epithelium.

Functional status of patients with oral cancer and its relation to style of coping, social support and psychological status

Sixty-eight patients were evaluated 6 months to 6 years after treatment for oral cancer using standardized questionnaires to explore the influence of age, sex, site and stage of tumour, and primary treatment on their functional status measured by the University of Washington Quality of Life Questionnaire (UW-QoL), and the association between functional status and psychological outcome measured by the Hospital Anxiety and Depression Scale (HADS), style of coping measured by the Mental Adjustment to Cancer Questionnaire (MAC-Q), and social support measured by the Short-Form Social Support Questionnaire (SSQ-6). Young patients, women, patients with advanced tumours, those with oropharyngeal tumours and those who had been treated with both surgery and radiotherapy reported worse function. The worse the functional domain, the more likely it was to be associated with anxiety, depression and ineffective coping style, and better functional scores were weakly associated with fighting spirit, level of social support and satisfaction with that support. We have identified patients at need and highlighted their problems. Dealing with these problems may ultimately improve the perception of function after treatment of oral cancer.

Psychometric properties of the Japanese version of the Mental Adjustment to Cancer (MAC) scale

This paper describes a study of the psychometric properties of the Japanese version of the mental adjustment to cancer (MAC) scale developed in England. The scale was completed by 455 Japanese cancer patients. The internal consistency was similar to that of the original version (Cronbach's alpha coefficients for the subscales ranged from 0.60 to 0.78) and the Japanese version had moderate to moderately high stability (correlation coefficients were above 0.64). Correlations between the MAC scale score and emotional states measured by the Profile of Mood States (POMS) indicated the concurrent validity. The results suggest that the Japanese version, like the original MAC scale, is a reliable and valid clinical research tool in Japan.

Coping with new treatments for cancer: a feasibility study of daily diary measures

This article describes a study of the feasibility and value of using daily diary measures to assess coping, adjustment and symptoms in patients participating in phase I clinical trials of new anticancer drugs. Ten patients (six women, four men) with advanced metastatic cancer were studied during a four-week phase I trial. Measures of psychological well-being, mental adjustment and symptoms were determined prior to treatment, and participants also completed daily ratings of psychological coping responses, mood and symptoms. Completion rates for diaries were high, and the amount of missing data averaged only 3.2% per patient. Overall, the most frequently endorsed coping responses were 'acceptance' and 'positive reinterpretation and growth'. There were systematic variations in coping by seeking social support across the trial, with more frequent use during phases of hospitalisation. Idiosyncratic fluctuations in patterns of coping were also observed. Positive daily mood was greater among patients who coped by ignoring their condition, and was also correlated with fighting spirit. Daily symptoms were inversely associated with positive mood and with fighting spirit. It is concluded that the daily diary approach is feasible, and may help to increase understanding of the experience of patients taking part in experimental anticancer drug trials.