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Goal-Based Cognitive Control 539 every two trials pain treatment sickle cell cheap motrin 600 mg line, alternating between trials in which the participant is required to brunswick pain treatment center cheap motrin 400 mg name the digit and trials in which the participant is required to postoperative pain treatment guidelines order motrin 600 mg mastercard name the letter. The time required to change from one goal to the other, the switching cost, is measured by the difference in response time on these two types of trials. Because the trials alternate consistently, participants can keep track of their place; but doing so increases their processing requirements. When a visual word cue was used to specify the task goal, patients with lateral prefrontal lesions performed similarly to the matched control participants. This dissociation reinforces the idea that the prefrontal cortex is important for coordinating goal-oriented behavior. Moreover, this form of control is needed especially when the goal must be retrieved from memory. With the color cue, the patients must remember the associations between the colors and the tasks. In the Stroop task, goal-based control facilitates online processing in a similar way. The task goal requires that we attend to one visual dimension (the color of the ink) while ignoring another visual dimension (the word). A focus of considerable research has been to understand the neural mechanisms through which goal-based control is achieved. This problem is especially challenging because it requires understanding interactions between brain regions that are considerably far apart. Jon Driver and his colleagues at University College London provided one remarkable example of how the brain coordinates activity across different neural regions. The researchers set out to investigate how disruption of the frontal cortex affected processing in posterior cortex. Attention requires a balance between maintaining the current focus of attention and orienting to novel salient stimuli. More surprising, activation was increased in the regions that represented peripheral vision. An important part of cognitive control is the ability to shift focus from one subgoal to another. The prefrontal cortex can be conceptualized as a dynamic filtering mechanism through which the task-relevant information is activated and maintained in working memory. Goal Representation and the Inhibition and Enhancement of Working Memory Representations Goal-based control could influence the contents of information processing in at least two distinct ways. For example, when we attend to a location, our sensitivity to detect a stimulus at that location is enhanced. Alternatively, we can selectively attend by excluding information from other Goal-Based Cognitive Control Dynamic filtering is a form of goal-based control. We know that in your other less interesting classes, you are listening to your professor while also shifting your attention, texting friends, and surfing the Web. But when multitasking, are we really doing two goal-related activities at once, or are we simply quickly switching between two tasks People are tested on each task alone or with a visual stimulus and auditory stimulus presented simultaneously (a dual task). At first, participants do much worse in the dual-task condition, but after 5 days or so of training, they can do the two tasks simultaneously with little to no interference (Hazeltine et al. As expected, the participants showed a large reduction in dual-task cost (faster reaction time with no loss in accuracy) after training. They then looked at the connectivity patterns, focusing on the inferior frontal cortex based on prior imaging results showing activation in this region in task-switching studies (see the Konishi study discussed earlier in this chapter). This region showed a significant reduction in activity with training, consistent with the idea that the tasks are becoming segregated. In addition, with training, the peak of the frontal response came earlier and was of shorter duration: evidence that the participants were becoming more efficient in switching.
However myofascial pain treatment center boston cheap 600mg motrin with amex, a substantial number of the gynecologic cancer patients reported a disruption in sexual responsiveness with the onset of symptoms pain treatment in pregnancy purchase generic motrin, including changes in desire pain treatment research cheap motrin 400 mg on line, excitement, orgasm, and resolution and a global deterioration in sexual functioning. Sexual functioning outcomes in patients with gynecologic cancers often have been reported in small case series. Andersen and colleagues 146 prospectively studied 47 women with early-stage gynecologic cancers (cervix, n = 33; endometrium, n = 9; ovary, n = 5) and benign gynecologic disease before treatment, and then interviewed them again at 4, 8, and 12 months posttreatment. Women treated for disease, whether benign or malignant, reported similar declines in frequency of intercourse, decreased sexual excitement, and a less positive global evaluation of their sexual life. In addition, a three- to sixfold increase in the incidence of sexual dysfunction diagnoses was found in comparison to the rates in healthy women. Although both treated groups experienced increased sexual dysfunctions posttreatment, the cancer patients experienced a higher incidence of inhibited excitement. Looking more specifically at the impact of cervical cancer and its treatment on sexual functioning, several other small, descriptive studies are relevant. The impact of treatment (radical hysterectomy alone, radiotherapy with or without surgery) was examined in this study. Sexual satisfaction, capacity for orgasm, and frequency of masturbation remained stable over 12 months of observation posttreatment; however, frequency of sexual activity with a partner and the range of sexual practices decreased significantly over the course of the year of follow-up. Although at 6 months few differences were noted between those who had received irradiation and those who had not, at the 12-month assessment, the women receiving radiotherapy had more dyspareunia (as well as an abnormal vaginal examination) and had more problems with sexual desire and arousal. These findings suggest an additional complication from irradiation of the pelvis, which is vaginal stenosis or foreshortening. Several other studies have documented this problem, 148,149 with level of sexual activity being lowest at the completion of radiotherapy. The finding of progressive dyspareunia and vaginal shortening 147 suggests the need for active intervention in these women, with the need for early use of vaginal lubricants, resumption of sexual activity, or use of dilators to maintain vaginal length and elasticity. In one small study, 150 women who did not follow advice regarding use of vaginal dilators and did not resume the same level of sexual intercourse as before their illness were more likely to develop physical and sexual changes. These small descriptive studies shed some light on the mechanisms of sexual dysfunction and the range of sexual problems in the first year after treatment for cervical cancer. However, the late sexual effects of treatment for cervical cancer are important, because this is a group of women who are likely to be cured of their disease and be long-term cancer survivors. The cancer survivors had been treated, on average, approximately 5 years earlier and were a mean age of 51 years at the time they responded to the study questionnaire. Significant differences were found between the two groups in problems with vaginal lubrication (26% of the women with cancer vs. In spite of these significant changes associated with the treatment of cervical cancer, no differences were noted in sexual interest, desire, frequency of vaginal intercourse, or orgasm; however, there was much distress related to the frequency of vaginal intercourse and problems during vaginal intercourse (dyspareunia, vaginal bleeding) among the women with a history of cervical cancer. Interestingly, treatment for cervical cancer negatively influenced feelings of femininity and attractiveness among the cervical cancer survivors but did not seem to influence sexual satisfaction. Importantly, the authors observed no age above which sexual function was not important to women, and they suggest that efforts to prevent vaginal changes or relieve them after therapy should be considered in all women who are treated for cervical cancer. Without such a control group, these findings might have been attributed to the history of cancer. Although rare, other gynecologic cancers can have profound effects on sexual functioning. In spite of being the third most common gynecologic cancer, ovarian cancer patients have been less frequently studied. However, treatment of these patients is often dominated by the use of systemic or intraperitoneal chemotherapy and the side effects of this treatment, especially decreased physical functioning, fatigue, pain, and abdominal discomfort. Symptoms of advanced cancer significantly impact sexual functioning in these women. They found a higher rate of inhibited sexual excitement and inhibited orgasm among the women with cancer, as well as an increasing rate of sexual inactivity over time, compared with the healthy women. As might be predicted, the wider the surgical excision, the greater the magnitude of sexual disruption. However, genital symptoms of sexual arousal and satisfaction were diminished in the cancer group and did not return to levels of those found in the control group. Therefore, the impact of disease and treatment on sexual functioning is an important consideration.
A report of the working party: comparison of total body irradiation techniques for bone marrow transplantation otc pain medication for uti order motrin 400 mg with visa. Fractionated total-body irradiation and high-dose etoposide as a preparatory regimen for bone marrow transplantation for 94 patients with chronic myelogenous leukemia in chronic phase pain medication for dogs dose buy motrin 400 mg mastercard. Busulfan pain after treatment for uti safe motrin 600mg, cyclophosphamide and melphalan as conditioning regimen for bone marrow transplantation in children with myelodysplastic syndrome. Treatment of infant leukemia with busulfan cyclophosphamide + etoposide and bone marrow transplantation. Allogeneic bone marrow transplantation for chronic myeloid leukemia in first chronic phase: a randomized trial of busulfan-cytoxan versus cytoxantotal body irradiation as preparative regimen: a report from the French Society of Bone Marrow Graft. A prospective randomized comparison of total body irradiationetoposide versus busulfan-cyclophosphamide as preparatory regimens for bone marrow transplantation in patients with leukemia who were not in first remission: a Southwest Oncology Group Study. Hepatic veno-occlusive disease postbone marrow transplantation in children conditioned with busulfan and cyclophosphamide: incidence, risk factors, and clinical outcome. Risk factors associated with interstitial pneumonia following allogeneic bone marrow transplantation for leukemia. The effect of total body irradiation and bone marrow transplantation during childhood and adolescence on growth and endocrine function. Engraftment of allogeneic hematopoietic progenitor cells with purine analogcontaining chemotherapy: harnessing graft-versus-leukemia without myeloablative therapy. Transplant-lite: induction of graft-versus-malignancy using fludarabine-based nonablative chemotherapy and allogeneic progenitor-cell transplantation as treatment for lymphoid malignancies. Engraftment kinetics after nonmyeloablative allogeneic peripheral blood stem cell transplantation: full donor T-cell chimerism preceded alloimmune responses. Donor leukocyte transfusions in 140 patients with relapsed malignancy after allogeneic transplantation. Cytogenetic analysis of chimerism and leukemia relapse in chronic myelogenous leukemia patients after T-cell depleted bone marrow transplantation. Detection of minimal residual disease by polymerase chain reaction of bcr/abl transcripts in chronic myelogenous leukemia following allogeneic bone marrow transplantation. Clinical significance of bcr/abl gene rearrangement detected by polymerase chain reaction after allogeneic bone marrow transplantation in chronic myelogenous leukemia. Frequent detection of minimal residual disease by use of the polymerase chain reaction in long-term survivors after bone marrow transplantation for chronic myeloid leukemia. Durable complete remission of acute nonlymphocytic leukemia associated with discontinuation of immunosuppression following relapse after allogeneic bone marrow transplantation: a case report of a probable graft-versus-leukemia effect. Hematologic relapse of chronic myelogenous leukemia following allogeneic bone marrow transplantation: apparent graft-versus-leukemia effect following abrupt discontinuation of immunosuppression. Donor buffy coat transfusions for adoptive immunotherapy in human and canine chimeras. Donor leukocyte transfusions for treatment of recurrent chronic myelogenous leukemia in marrow transplant patients. Induction of graft versus-host disease as immunotherapy for relapsed chronic myeloid leukemia. Donor leukocyte infusions for chronic myeloid leukemia relapsed after allogeneic bone marrow transplantation. Salvage immunotherapy using donor leukocyte infusions as treatment for relapsed chronic myelogenous leukemia after bone marrow transplantation: efficacy and toxicity of a defined T-cell dose. Graft vs leukemia effect of donor lymphocyte transfusions in marrow grafted patients. Immune escape from a graft-versus-leukemia effect may play a role in the relapse of myeloid leukemias following allogeneic bone marrow transplantation. Management of lymphoma recurrence after allogeneic transplantation: the relevance of graft-versus lymphoma effect. Donor lymphocyte infusions for relapse of chronic myeloid leukemia after allogeneic stem cell transplantation: Where do we now stand Adoptive immunotherapy evaluating escalating doses of donor leukocytes for relapse of chronic myeloid leukemia after bone marrow transplantation: separation of graft-versus-leukemia responses from graft-versus-host disease. Comparison of single-dose and escalating-dose regimens of donor lymphocyte infusions for relapse after allografting for chronic myeloid leukemia. Growth inhibition of clonogenic leukemic precursor cells by minor histocompatibility antigen specific cytotoxic T-lymphocytes.
Consequently wrist pain treatment exercises purchase motrin 400mg fast delivery, the prevalence of cancer cachexia may be underestimated pain evaluation and treatment center tulsa ok order generic motrin pills, since it is likely that subtle metabolic alterations precede these clinically apparent changes manifested by the weight and lean tissue loss pain medication for old dogs cheap 400 mg motrin. Since many cancer-related deaths are a consequence of malnutrition and host depletion, understanding the mechanism of cancer cachexia is imperative, as the syndrome always results in death if oncologic therapy is not administered. Many etiologies for the cancer cachexia syndrome have been proposed, but no clear explanation exists. Causes can be broadly categorized into anorexia of malignancy, anorexia of therapy, and abnormalities in host intermediary metabolism. Although this anorexia comes eventually in all patients with advanced cancer, it may sometimes develop early in the course of the disease when the tumor is quite small. Weight loss is common in patients with gastrointestinal tumors, but dysfunction of the digestive tract cannot solely explain this phenomenon, since significant cachexia is also noted in patients with cancers that originate outside the abdominal cavity. Proposed mechanisms include local effects of the tumor, alterations in taste or palatability, hypothalamic dysfunction, modification of satiety mechanisms, and learned food aversion. Many chemotherapeutic agents can cause nausea, vomiting, mucositis, gastrointestinal dysfunction, or all of these symptoms for varying periods of time that may result in anorexia and weight loss. Radiation therapy is often associated with similar acute side effects and may lead to stricture formation in the bowel. After surgery, causes of weight loss range from routine postoperative ileus to the hypermetabolism associated with sepsis. An important consideration for the clinician to remember is that, in the midst of a diagnostic workup, hospitalized cancer patients are often restricted from taking adequate nutrition. As a result, the patient may become iatrogenically malnourished before even the initiation of oncologic treatment. Knox and coworkers studied 200 malnourished cancer patients using indirect calorimetry and found that 41% had normal basal metabolic rates, 33% had decreased expenditures, and 25% had increased expenditures. Metabolic Abnormalities in Animal and Human Cancer Cachexia Glucose metabolism is also abnormal in cancer patients secondary to increased whole body glucose turnover. Shaw and Wolfe demonstrated that hepatic gluconeogenesis in patients with gastrointestinal malignancies was elevated proportional to tumor burden. However, this insulin resistance also shares elements similar to the stress state. Overall, there is a combination of a significant decrease in metabolized and cleared glucose in both the weight-stable and weight-losing cancer patients. Since the insulin resistance may decrease after complete tumor resection, it appears to be related to the tumor itself, rather than the associated malnutrition. Shaw and Wolfe studied glycerol and fatty acid kinetics using radioisotopes and found cancer patients with weight loss have increased glycerol and fatty acid turnover compared with weight-stable patients. In fact, there is increased lipid mobilization from peripheral fat stores and decreased serum lipid clearance, leading to depletion of body fatty tissue. It has been found in the urine of pancreas, lung, breast, and ovarian cancer patients. The N-terminal amino acid sequence is different from that of any of the known cytokines. Administration of this material shows significant reduction in body weight and decrease in both fat and lean body mass and can be neutralized by administration of monoclonal or polyclonal antibodies. In fibrosarcoma cells, glutamine oxidation is decreased and the glutamine is shunted into protein synthesis while the tumor switches to glucose for energy. Because tumors must compete with host tissues for plasma amino acids and are often poorly vascularized, they must possess efficient mechanisms for their extraction, especially in an environment. Studies 35 in a variety of different solid tumor cell lines, regardless of tissue origin, indicate a single efficient high-affinity carrier-mediated Na+-dependent glutamine transport. With time, blood glutamine levels decrease to less than 50% of normal, indicating an imbalance between rates of glutamine production and consumption expressed by the various organs of the body. This reduction in circulating levels occurs despite an increase in the rate of muscle glutamine release because the accelerated glutamine consumption by tumor and other tissues exceeds the net rate of glutamine uptake into the blood stream. Concomitant temporally with the tumor-induced alterations in muscle glutamine metabolism are marked increases in tumor and hepatic glutamine uptake.
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The performance of institutional review boards is assessed in this empirical study best pain treatment for shingles order motrin canada. Institutional review board review lacks impact on the readability of consent forms for research pain treatment in homeopathy purchase genuine motrin online. The institutional review board and beyond: future challenges to pain medication for dogs surgery discount motrin 600 mg free shipping the ethics of human experimentation. Shared understandings for informed consent: the relevance of psychological research on the provision of information. Randomized comparison of procedures for obtaining informed consent in clinical trials of treatment for cancer. Impact of therapeutic research on informed consent and the ethics of clinical trials: a medical oncology perspective. Response rates, duration of response, and dose response effect in phase I studies in antineoplastics. Patient motivation and informed consent in a phase I study of an anticancer agent. Quantitative analysis of ethical issues in phase I trials: a survey interview study of 144 advanced cancer patients. Informed consent for phase I studies: evaluation of quantity and quality of information provided to patients. Expectations and experiences of patients with cancer participating in phase I clinical trials. Patients in phase I trials of anti-cancer agents in Japan: motivation, comprehension and expectations. A comparison of hospice vs conventional care of the terminally-ill cancer patients. How American oncologists treat breast cancer: an assessment of the influence of clinical trials. Analyzing the same data in two ways: a demonstration model to illustrate the reporting and misreporting of clinical trials. Ethical difficulties with randomized clinical trials involving cancer patients: examples from the field of gynecologic oncology. A response to a purported ethical difficulty with randomized clinical trials involving cancer patients. Physician response to informed consent regulations for randomized clinical trials. Attitudes to chemotherapy: comparing views of patients with cancer with those of doctors, nurses, and the general public. Fundamental dilemmas of the randomized clinical trial process: results of a survey of 1,737 Eastern Cooperative Oncology Group investigators. Eight-year results of a randomized clinical trial comparing total mastectomy and lumpectomy with or without irradiation in the treatment of breast cancer. The Internet has revolutionized telecommunications, enabling electronic devices with different operating systems and data formats to communicate with each other seamlessly and making the "Net" and the "Web" ubiquitous terms in our lives. Computing power continues to increase steadily as more powerful chips become available, and powerful hand-held computers with wireless access to the Internet are now available. Direct Internet connections, once only available in academic centers, are now readily available in the home, workplace, and a growing number of public settings, such as public libraries and shopping malls. Internet access is available through dial-up, cable, and wireless Internet service providers at a reasonable cost. The simplicity and accessibility of Internet access have now made the Web a primary mechanism for communicating health information. As a result, the Internet has rapidly become an extremely popular vehicle for information queries and research. Changes in the accessibility of medical information and the way the public can acquire it are altering the field of health care and the relationship between health care professionals and patients. A federally funded science panel on interactive health communication has concluded that few other interventions have greater potential to improve health outcomes, decrease costs, and enhance consumer satisfaction than communication. However, major gaps in knowledge exist about how consumers process and use health information; distinguish important from insignificant health risks; decide to modify risky behavior, such as smoking; resolve contradictory health messages; and make decisions about their health care options. Applications are being designed for a variety of dissemination vehicles, including standalone systems; locally networked computers; and Internet access via personal computers, mobile wireless digital devices, kiosks, and Web television.