scholarly journals Extended Adverse Effects of Cyclophosphamide on Mouse Ovarian Function

2020 ◽  
Author(s):  
Jihyun Kim ◽  
Sooseong You

Abstract Background: Most patients with cancer undergo multiple administrations of anticancer drugs during treatment, resulting in chronic impairment of their reproductive health. As improved treatment options increase cancer survival, it has become increasingly important to address fertility issues in cancer survivors. In this study, we examined the pathophysiological effects of multiple exposures to cyclophosphamide (Cy) on the ovaries of mice and their underlying molecular mechanism. Methods: Female C57BL/6 mice were intraperitoneally injected with 100 mg/kg Cy six times over 2 weeks; 4 weeks later, the mice were sacrificed and their ovaries, sera, and oocytes were collected for histological observation, measurement of anti-Müllerian hormone levels, and assessment of oocyte quantity and quality in response to hormonal stimulation. Gene expression changes in Cy-treated ovaries were examined by microarray and bioinformatics analyses. Results: After repeated Cy exposure, the anti-Müllerian hormone level was decreased, and follicle loss and impairments in the quality of oocyte were irreversible. The expression levels of genes involved in folliculogenesis, oogenesis, and zona pellucida glycoprotein transcription displayed sustained alterations in Cy-exposed ovaries even after 4 weeks.Conclusion: The adverse effects of Cy on ovarian function and oocytes remained even after chemotherapy was complete. Therefore, strategies to prevent ovarian damage or restore ovarian function after treatment are required to safeguard the fertility of young cancer survivors.

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Jihyun Kim ◽  
Sooseong You

Abstract Purpose Most patients with cancer undergo multiple administrations of anticancer drugs during treatment, resulting in chronic impairment of their reproductive health. As improved treatment options increase cancer survival, it has become increasingly important to address fertility issues in cancer survivors. In this study, we examined the pathophysiological effects of multiple exposures to cyclophosphamide (Cy) on the ovaries of mice and their underlying molecular mechanism. Methods Female C57BL/6 mice were intraperitoneally injected with 100 mg/kg Cy six times over 2 weeks; 4 weeks later, the mice were sacrificed and their ovaries, sera, and oocytes were collected for histological observation, measurement of anti-Müllerian hormone levels, and assessment of oocyte quantity and quality in response to hormonal stimulation. Gene expression changes in Cy-treated ovaries were examined by microarray and bioinformatics analyses. Results After repeated Cy exposure, the anti-Müllerian hormone level was decreased, and follicle loss and impairments in the quality of oocyte were irreversible. The expression levels of genes involved in folliculogenesis, oogenesis, and zona pellucida glycoprotein transcription displayed sustained alterations in Cy-exposed ovaries even after 4 weeks. Conclusion The adverse effects of Cy on ovarian function and oocytes remained even after chemotherapy was complete. Therefore, strategies to prevent ovarian damage or restore ovarian function after treatment are required to safeguard the fertility of young cancer survivors.


2020 ◽  
Author(s):  
Jihyun Kim ◽  
Sooseong You

Abstract Purpose: Most patients with cancer undergo multiple administrations of anticancer drugs during treatment, resulting in chronic impairment of their reproductive health. As improved treatment options increase cancer survival, it has become increasingly important to address fertility issues in cancer survivors. In this study, we examined the pathophysiological effects of multiple exposures to cyclophosphamide (Cy) on the ovaries of mice and their underlying molecular mechanism.Methods: Female C57BL/6 mice were intraperitoneally injected with 100 mg/kg Cy six times over 2 weeks; 4 weeks later, the mice were sacrificed and their ovaries, sera, and oocytes were collected for histological observation, measurement of anti-Müllerian hormone levels, and assessment of oocyte quantity and quality in response to hormonal stimulation. Gene expression changes in Cy-treated ovaries were examined by microarray and bioinformatics analyses.Results: After repeated Cy exposure, the anti-Müllerian hormone level was decreased, and follicle loss and impairments in the quality of oocyte were irreversible. The expression levels of genes involved in folliculogenesis, oogenesis, and zona pellucida glycoprotein transcription displayed sustained alterations in Cy-exposed ovaries even after 4 weeks.Conclusion: The adverse effects of Cy on ovarian function and oocytes remained even after chemotherapy was complete. Therefore, strategies to prevent ovarian damage or restore ovarian function after treatment are required to safeguard the fertility of young cancer survivors.


2020 ◽  
Author(s):  
Jihyun Kim ◽  
Sooseong You

Abstract Purpose: Most patients with cancer undergo multiple administrations of anticancer drugs during treatment, resulting in chronic impairment of their reproductive health. As improved treatment options increase cancer survival, it has become increasingly important to address fertility issues in cancer survivors. In this study, we examined the pathophysiological effects of multiple exposures to cyclophosphamide (Cy) on the ovaries of mice and their underlying molecular mechanism. Methods: C57BL/6 mice were intraperitoneally injected with 100 mg/kg Cy six times over 2 weeks; 4 weeks later, the mice were sacrificed and their ovaries, sera, and oocytes were collected for histological observation, measurement of anti-Müllerian hormone levels, and assessment of oocyte quantity and quality in response to hormonal stimulation. Gene expression changes in Cy-treated ovaries were examined by microarray and bioinformatics analyses. Results: After repeated Cy exposure, the anti-Müllerian hormone level was decreased, and follicle loss and impairments in the quality of oocyte were irreversible. The expression levels of genes involved in folliculogenesis, oogenesis, and zona pellucida glycoprotein transcription displayed sustained alterations in Cy-exposed ovaries even after 4 weeks.Conclusion: The adverse effects of Cy on ovarian function and oocytes remained even after chemotherapy was complete. Therefore, strategies to prevent ovarian damage or restore ovarian function after treatment are required to safeguard the fertility of young cancer survivors.


2020 ◽  
pp. 629-633
Author(s):  
Marie Fallon

Pain occurs in more than 50% of patients with advanced disease, interferes with daily functioning and quality of life, and is very often undertreated. Patients can find it difficult to articulate the character of their pains, but it is important to determine whether it is somatic, neuropathic, or visceral since this has important implications for management. For most patients with cancer pain, a three-step approach combining simple or opioid analgesia (depending on severity) along with an adjuvant analgesic (depending on cause) will result in good pain relief, but the challenge is to achieve good pain relief without unacceptable adverse effects.


2008 ◽  
Vol 2 ◽  
pp. BCBCR.S784 ◽  
Author(s):  
Mugdha Dabeer ◽  
Michelle Cororve Fingeret ◽  
Fatima Merchant ◽  
Gregory P. Reece ◽  
Elisabeth K. Beahm ◽  
...  

Breast cancer is one of the most prevalent forms of cancer in the US. It is estimated that more than 180,000 American women will be diagnosed with invasive breast cancer in 2008. Fortunately, the survival rate is relatively high and continually increasing due to improved detection techniques and treatment methods. However, maintaining quality of life is a factor often under emphasized for breast cancer survivors. Breast cancer treatments are invasive and can lead to deformation of the breast. Breast reconstruction is important for restoring the survivor's appearance. However, more work is needed to develop technologies for quantifying surgical outcomes and understanding women's perceptions of changes in their appearance. A method for objectively measuring breast anatomy is needed in order to help both the breast cancer survivors and their surgeons take expected changes to the survivor's appearance into account when considering various treatment options. In the future, augmented reality tools could help surgeons reconstruct a survivor's breasts to match her preferences as much as possible.


2014 ◽  
Vol 32 (24) ◽  
pp. 2627-2634 ◽  
Author(s):  
Arash Naeim ◽  
Matti Aapro ◽  
Rashmi Subbarao ◽  
Lodovico Balducci

The treatment of cancer presents specific concerns that are unique to the growing demographic of elderly patients. Because the incidence of cancer is strongly correlated with aging, the expansion of supportive care and other age-appropriate therapies will be of great importance as the population of elderly patients with cancer increases in the coming years. Elderly patients are especially likely to experience febrile neutropenia, complications from chemotherapy-induced nausea, anemia, osteoporosis (especially in patients diagnosed with breast or prostate cancer), depression, insomnia, and fatigue. These issues are often complicated by other chronic conditions related to age, such as diabetes and cardiac disease. For many patients, symptoms may be addressed both through lifestyle management and pharmaceutical approaches. Therefore, the key to improving quality of life for the elderly patient with cancer is an awareness of their specific needs and a familiarity with emergent treatment options.


2008 ◽  
Vol 94 (2) ◽  
pp. 154-159 ◽  
Author(s):  
Bèatrice Fervers ◽  
Magali Remy-Stockinger ◽  
Valèrie Mazeau-Woynar ◽  
Renèe Otter ◽  
Alessandro Liberati ◽  
...  

All European countries are facing common challenges for delivering appropriate, evidence-based care to patients with cancer. Despite tangible improvements in diagnosis and treatment, marked differences in cancer survival exist throughout Europe. The reliable translation of new research evidence into consistent patient-oriented strategies is a key endeavour to overcome inequalities in healthcare. Clinical-practice guidelines are important tools for improving quality of care by informing professionals and patients about the most appropriate clinical practice. Guideline programmes in different countries use similar strategies to achieve similar goals. This results in unnecessary duplication of effort and inefficient use of resources. While different initiatives at the international level have attempted to improve the quality of guidelines, less investment has been made to overcome existing fragmentation and duplication of effort in cancer guideline development and research. To provide added value to existing initiatives and foster equitable access to evidence-based cancer care in Europe, CoCanCPG will establish cooperation between cancer guideline programmes. CoCanCPG is an ERA-Net coordinated by the French National Cancer Institute with 17 partners from 11 countries. The CoCanCPG partners will achieve their goal through an ambitious, step-wise approach with a long-term perspective, involving: 1. implementing a common framework for sharing knowledge and skills; 2. developing shared activities for guideline development; 3. assembling a critical mass for pertinent research into guideline methods; 4. implementing an appropriate framework for cooperation. Successful development of joint activities involves learning how to adopt common quality standards and how to share responsibilities, while taking into account the cultural and organisational diversity of the participating organisations. Languages barriers and different organisational settings add a level of complexity to setting up transnational collaboration. Through its activities, CoCanCPG will make an important contribution towards better access to evidence-based cancer practices and thus contribute to reducing inequalities and improving care for patients with cancer across Europe.


Author(s):  
Brian Badgwell ◽  
Robert S. Krouse

Palliative surgery is defined as surgical intervention in patients with incurable malignancy for symptoms attributable to their cancer. A considerable percentage of consultations at major cancer centres are palliative in nature, resulting in 13-21% of all operations meeting the criteria for palliative surgery. Common symptom groups for evaluation include gastrointestinal obstruction, wound problems/infections, gastrointestinal bleeding, and obstructive jaundice. This chapter outlines the indications, treatment options, and outcomes for these diagnoses and a few less common indications for surgical consultation. Clinical trials are infrequent in this population and there is a paucity of prospective studies with quality of life outcomes measures. Most studies focus on morbidity and mortality as palliative surgery has long been recognized as having increased risk for complications, although recent studies suggest an improvement in this regard. The benefits of palliative surgery should focus on quality of life, symptom control, and symptom prevention. Future studies will be needed to determine the definitions of success and hopefully include patient-reported outcomes assessment.


2011 ◽  
Vol 22 (4) ◽  
pp. 323-334
Author(s):  
Kristi Beatty ◽  
Chris Winkelman ◽  
Joseph A. Bokar ◽  
Polly Mazanec

The start of the 21st century has produced advances in cancer care that have improved both survival rates and quality of life for many persons diagnosed with cancer. Targeted therapy has given new hope for controlling cancer as a chronic illness. Alone, or in combination with traditional therapies such as surgery, radiation, and/or chemotherapy, this new form of therapy targets malignant cells, halting tumor growth and the potential metastatic spread of disease. Toxicities are limited, but some are serious and may require intensive care. It is imperative for the experienced critical care nurse to have an understanding of these new treatment options and those on the horizon, as these therapies are the future of cancer care. Whereas in previous decades, patients with cancer may not have survived an intensive care admission for treatment complications or advanced disease, many patients now are recovering from life-threatening events, continuing treatment for their disease, and going on to live meaningful, good-quality lives.


2021 ◽  
Vol 70 (3) ◽  
pp. 75-91
Author(s):  
Valentina M. Denisova ◽  
Maria I. Yarmolinskaya ◽  
Karina A. Zakurayeva

Premature ovarian insufficiency is a syndrome characterized by hypergonadotropic ovarian insufficiency and the reduction of ovarian function before age 40. This leads to reproductive failures, metabolic changes, and a decrease in quality of life. Currently, occult and initial forms of premature ovarian insufficiency, which have their own diagnostic features and management tactics, can be figured out. The frequency of this syndrome is between 1.1 and 3.7% and the tendency for incidence to increase can be seen. This article is a literature review of the data available in the PubMed database (20052020), with international clinical guidelines taken into consideration. The genetic causes of premature ovarian insufficiency, clinical signs of this pathology and treatments options for such patients are included into the review. In addition, some features of assisted reproductive technology within this group are described.


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