Unmonitored use of herbal medicine by patients with breast cancer: reframing expectations

Herb-antitumour drug interaction risks: retrospective integrative oncology study

OBJECTIVES

The use of herbal medicine is widespread among oncology patients, with potentially negative interactions with anticancer drugs. This study identified herbal products being used among a cohort of oncology patients, assessing the risk for an herb-drug interaction.

METHODS

Herbal medicine use was examined among 42 oncology patients, identifying potential herb-drug interactions using four online sites. The risk for an interaction was scored using the Working Group on Pharmacotherapy and Drug Information of the Royal Dutch Association for the Advancement of Pharmacy (KNMP).

RESULTS

Most patients (62%) reported herbal medicine use, with 70 products identified; 8 herbs and 13 herbal formulas with unidentified components; and 24 anticancer drugs. Herbal medicine use was more prevalent among female patients (p=0.038), with only nine potential herb-drug interactions identified on at least one site. A maximal KNMP Score of 1 (ie, incomplete published case report) was found with only one interaction.

CONCLUSIONS

The risk for interactions between herbal products and anticancer drugs is difficult to predict, with online search engines providing limited and inconsistent information. Clinical implications of herb-antitumor drug interactions need to be better understood, enabling patients and their oncology healthcare providers to make informed decisions regarding their care.

Cross-Cultural Patient Counseling and Communication in the Integrative Medicine Setting: Respecting the Patient's Health Belief Model of Care

PURPOSE OF REVIEW

Communicating effectively with patients having a traditional, alternative or complementary medicine-related health-belief model is challenging in today's cross-cultural society. This narrative review explores the integrative medicine setting of care, focusing on insights from the integrative oncology daily practice, while addressing the relevance to the mental health setting. The way in which healthcare providers can enhance cultural-sensitive communication with patients and informal caregivers; recognize and respect health-beliefs to bridge cultural gaps; and generate an open, non-judgmental and mindful dialogue are discussed.

RECENT FINDINGS

Identifying cross-cultural barriers to healthcare provider-patient communication is important in order to address the potential for conflict between conventional and "alternative" health beliefs; difficulties in creating a shared-decision making process; disagreement on therapeutic goals and treatment plan; and finally, the potential for non-compliance or non-adherence to the conventional oncology treatment. Acquiring intercultural competencies is needed at all stages of medical education, and should be implemented in medical and nursing curricula, as well as during specialization and sub-specialization. As with patient-centered paradigms of care, integrative medicine entails a dual patient-centered and sensitive-cultural approach, based on a comprehensive bio-psycho-social-spiritual model of care.

Dietary supplement beliefs and use patterns among Irish patients with early-stage breast cancer

BACKROUND

Level one evidence reported poorer outcomes among patients taking dietary supplements after breast cancer (BC) diagnosis.

METHODS

We evaluated dietary supplement behaviours among adult BC patients via questionnaire. Sociodemographic data, supplement use, attitudes, and healthcare provider (HCP) advice were analysed.

RESULTS

Of 185 participants, 45% were regular supplement users following diagnosis. Regular supplement use was associated with higher education level (p = 0.05). The majority perceived supplements to be safe. Over half reported not receiving advice from HCPs.

CONCLUSION

In summary, supplement use is prevalent among BC patients. Development of guidelines in relation to safe use of dietary supplements after cancer diagnosis is crucial.

Integrative Medicine for Cancer-Related Pain: A Narrative Review

Cancer-related pain (C-RP) is a prevalent and debilitating concern among patients with cancer, with conventional treatments limited in their ability to provide adequate relief, and by the adverse effects associated with their use. Complementary and integrative medicine (CIM) modalities have been shown to be potentially effective and safe for the treatment of pain and related symptoms, when used in conjunction with conventional medications and under medical supervision. An increasing number of oncology centers provide CIM within their conventional supportive and palliative care service, in an "Integrative Oncology" (IO) setting. A large body of clinical research, including systematic reviews and guidelines such as those published in 2022 by the Society for Integrative Oncology (SIO), in collaboration with the American Society for Clinical Oncology (ASCO), support the use of some CIM modalities for C-RP and related concerns. These include acupuncture for general and peri-operative/procedural pain, as well as aromatase inhibitor-associated arthralgia (AIA); reflexology or acupressure for pain during systemic therapy for cancer; hypnosis for procedural pain or pain due to diagnostic workup; and massage for pain experienced by patients during palliative and hospice care. Further research is needed, within both randomized control trials and pragmatic non-controlled studies which are more reflective of the real-life IO setting. This review summarizes the evidence supporting the use of CIM for C-RP; the analgesic mechanism of the modalities presented; and the challenges facing IO researchers, as well as the implementation of the 2022 SIO-ASCO guideline recommendations.

Knowledge and attitudes towards medicinal cannabis and complementary and integrative medicine (CIM): a survey of healthcare professionals working in a cancer hospital in Australia

PURPOSE

We investigated attitudes and practices of healthcare professionals (HCPs) to medicinal cannabis (MC) and complementary and integrative medicine (CIM), including individual therapies, such as acupuncture, massage, herbs, dietary supplements, nutrition and exercise. We explored whether healthcare occupation influenced attitudes to CIM and MC; referral pathways for advice on CIM; and interest in a pharmacy service to evaluate herbs and supplements.

METHODS

Cross-sectional survey. All clinical staff at a comprehensive cancer hospital were invited to complete an anonymous questionnaire about CIM and MC. We used descriptive analysis to describe the respondent's knowledge and attitudes, and Fisher's exact test to test for differences by occupation, length of time at the hospital and age.

RESULTS

Most of the 116 HCPs respondents supported integrating CIM into cancer care (94.8%) and wanted to learn more (90%) and to understand benefits and contraindications. Most respondents believed that CIM (87.9%) could benefit patients with cancer, and MC could benefit those with advanced cancer (49-51%). Whilst just over half (52.6%) felt confident discussing CIM with patients, only 10% felt they had sufficient knowledge to discuss MC. Most felt they did not have sufficient knowledge to specifically discuss mind and body practices (63.8%) or herbs and supplements (79%). HCPs (63%) would be more inclined to allow use of herbs and supplements with cancer treatment if a pharmacy service was available to evaluate interactions. Occupation, length of time at hospital and age influenced confidence and knowledge about CIM.

CONCLUSIONS

The integration of evidence-based CIM and MC into cancer care is hampered by a lack of knowledge of benefits and contraindications, and gaps in education. Effective and safe integration may require targeted development of services such as pharmacy to evaluate the safety of herbs and supplements, and inclusion of cancer specialists who have received training in individual CIM therapies and MC.

Identifying cultural, demographic, personal health and cancer-related barriers to integrative oncology care: a retrospective case-cohort study

PURPOSE

Integrative oncology (IO) provides complementary and integrative medicine within conventional supportive and palliative cancer care. The present study set out to identify barriers to attending an integrative physician (IP) consultation, provided without charge within an IO treatment program.

STUDY METHODS

Electronic files of adult oncology patients undergoing chemotherapy were studied. Patient-related characteristics were examined to identify factors associated with attendance at the IP consultation: socio-demographic (age, gender, country of birth, place of residence, primary language spoken); health- related (BMI, smoking, independent functioning); and cancer- related (primary tumor site, localized vs. metastatic).

RESULTS

Only 257 of the 1912 patients studied (13.4%) attended the IP consultation, with female patients more likely to attend (p < 0.001), as well as younger patients (p = 0.002); those residing outside the Jerusalem municipality (p = 0.008); and patients whose primary language was Hebrew (p < 0.001). Non-smokers and functionally independent patients were also more likely to attend (p = 0.007 and 0.008, respectively), as were those diagnosed with breast/gynecological (p = 0.005) or gastrointestinal tumors (p = 0.002). Multivariate analysis showed a significantly greater likelihood of attending the consultation among females (OR 1.619, 95% CI 1.065-2.460; p = 0.024); younger patients (OR 1.019, 95% CI 1.007-1.031; p = 0.001); non-Arabic speakers (OR 8.220, 95% CI 3.310-20.413; p < 0.001); and patients diagnosed with a tumor other than lung cancer (OR 2.954, 95% CI 1.259-6.933; p = 0.013).

CONCLUSION

Further prospective research addressing socio-demographic, personal health- and cancer-related characteristics of oncology patients is needed to address potential barriers to the provision of IO care within a diverse, equitable and inclusive setting of care.

Integrative Medicine for Ovarian Cancer

PURPOSE OF REVIEW

Integrative oncology (IO) services provide a wide range of complementary medicine therapies, many of which can augment the beneficial effects of conventional supportive and palliative care for patients with ovarian cancer. This study aims to assess the current state of integrative oncology research in ovarian cancer care.

RECENT FINDINGS

We review the clinical research both supporting the effectiveness of leading IO modalities in ovarian cancer care as well as addressing potential safety-related concerns. There is growing amount of clinical research supporting the use of IO and implementation of integrative gynecological oncology models of care within the conventional supportive cancer care setting. Additional research is still needed in order to create clinical guidelines for IO interventions for the treatment of female patients with ovarian cancer. These guidelines need to address both effectiveness and safety-related issues, providing oncology healthcare professionals with indications for which these patients can be referred to the IO treatment program.

Use of Herbal Medicine Is Associated With Late-Stage Presentation in Tanzanian Patients With Cancer: A Survey to Assess the Utilization of and Reasons for the Use of Herbal Medicine

PURPOSE

In Tanzania, patients with cancer present late with advanced stages. Among other reasons, the use of herbal medicine (HM) might contribute to delay in diagnosis and treatment. This study aims to understand the utilization of HM and the reasons for its' use.

METHODS

A semistructured 30-item questionnaire with closed- and open-ended questions was applied to a cohort of patients with cancer at Kilimanjaro Christian Medical Centre. Content analysis was performed for answers to open-ended questions.

RESULTS

Three hundred two patients were interviewed, 50.9% males and 49.1% females. The mean age was 64 years. 71.6% were in stages III/IV. 70.5% patients used HM and 67.1% started conventional medicine after stopping HM, 7.5% started HM after conventional medicine, and 24.9% combined both. Stage IV patients used HM as first line significantly more often in comparison: stage I 55.6%; II 58.1%; III 57.2%; and IV 70.6%. 77.5% did not tell their doctors about the use of HM. Commonest reasons to use HM were belief in cure, hope of symptom relief, lack of cancer services, and tradition.

CONCLUSION

The majority of patients used HM before consulting a doctor, which contributes to stage IV presentation. Use of HM alongside with chemotherapy is mostly not known to the treating physician and may lead to interactions. These findings must alert health care workers and health policymakers to further foster health education about cancer and its treatment. Further research is needed to understand the wide use of HM among Tanzanian patients with cancer and the role that traditional and spiritual healers play in the field of cancer care.

Use of herbal medicines is common in Tanzania and leads to delays in cancer diagnosis that impedes curative treatment.

Expectations of Patients and Their Informal Caregivers from an Integrative Oncology Consultation

Integrative physicians (IPs) working in supportive and palliative care are often consulted about the use of herbal medicine for disease-related outcomes. We examined 150 electronic files of oncology patients referred to an IP consultation for demographic and cancer-related data; use of herbal medicine for disease-related outcomes; and narratives of patients and informal caregivers describing their expectations from the IP consultation. Over half (51.3%) of patients reported using herbal medicine for disease-related outcomes, more so among those adopting dietary changes for this goal (P < .005). Most (53.3%) were accompanied by an informal caregiver, especially those using herbal medicine (66.2%, P = .002) or adopting dietary changes (69.8%, P < .001). The majority of patients (84.4%) expected the IP to provide guidance on the use of herbal medicine for disease-related outcomes (e.g., "curing," "shrinking," "eradicating" and "cleansing"). Most caregivers (88.8%) expressed a similar expectation, with some having additional questions not mentioned by the patient. IPs need to identify and understand expectations of oncology patients and their informal caregivers, helping them make informed decisions on the effective and safe use of herbal medicine. The IP may need to "reframe" expectations regarding the ability of herbal medicine to treat cancer and immunity, to more realistic quality of life-focused goals.

Exploring Herbal Medicine Use during Palliative Cancer Care: The Integrative Physician as a Facilitator of Pharmacist-Patient-Oncologist Communication

Oncology patients frequently use herbal and other forms of complementary medicine, often without the knowledge of oncologists, pharmacists, and other healthcare professionals responsible for their care. Oncology healthcare professionals may lack the knowledge needed to guide their patients on the safe and effective use of herbal medicinal products, a number of which have potentially harmful effects, which include direct toxicity and negative herb–drug interactions. The current review addresses the prevalence and expectations of oncology patients from herbal medicine, as well as evidence for the beneficial or harmful effects of this practice (potential and actual), especially when the herbal products are used in conjunction with anticancer agents. Models of integrative oncology care are described, in which open and effective communication among oncologists, pharmacists, and integrative physicians on the use of herbal medicine by their patients occurs. This collaboration provides patients with a nonjudgmental and multidisciplinary approach to integrative medicine, echoing their own health-belief models of care during conventional cancer treatments. The role of the integrative physician is to facilitate this process, working with oncologists and pharmacists in the fostering of patient-centered palliative care, while ensuring a safe and effective treatment environment. Case scenario: W. is a 56 year old female artist who was recently diagnosed with localized hormone receptor-positive breast cancer. Following lumpectomy and sentinel node dissection, she is scheduled to begin adjuvant chemotherapy with a regimen which will include adriamycin, cyclophosphamide, and paclitaxel (AC-T protocol). She is worried about developing peripheral neuropathy and its impact on her ability to paint, and she asks about a number of dietary supplements which she heard could prevent this from happening: omega-3, vitamin E, alpha-lipoic acid, and acetyl-l-carnithine. She is concerned, however, that the supplements may negatively interact with her chemotherapy regimen.

Trends in integrative medicine and health consults: differences between cancer survivors and patients without cancer

OBJECTIVES

The objectives were to compare patients with and without cancer who sought an integrative health (IH) consult and reasons for seeking a consult.

DESIGN

Descriptive cross-sectional study that employed a secondary analysis of an integrative health database supplemented by a retrospective medical record review.

SETTING/LOCATION

Integrative Medicine and Health program in a Southwestern United States academic medical center.

SUBJECTS

Eight hundred thirty-nine adults over the age of 18 seeking IH consultation.

RESULTS

The number of complementary therapies reported prior to consult were not significantly different between groups. The most reported complementary therapies used by cancer survivors were multivitamins, exercise, and turmeric. Patients without cancer reported significantly higher pain levels than cancer survivors. Cancer survivors reported significantly higher energy, sleep levels, overall health, spiritual wellbeing, and significantly better relationships compared to patients without cancer. Cancer survivors reported fatigue and cancer as the top reasons for IH consult.

CONCLUSION

Participants without cancer reported higher levels of pain and lower levels of energy, sleep, overall health, spiritual wellbeing, and relationships compared to cancer survivors. However, cancer survivors still reported levels of unmanaged symptoms. Complementary therapy use prior to IMH consult was similar between groups; however, IMH providers recommended more treatments for patients without cancer. Our results highlight that more evidence is needed to guide IMH recommendations, especially for cancer survivors who may still be in treatment. Additionally, our results support evidence-based recommendations that all cancer survivors should be assessed for complementary therapy use and provided counseling by qualified providers on their advantages and limitations.

Simultaneous Determination of Schisandrin and Promethazine with Its Metabolite in Rat Plasma by HPLC-MS/MS and Its Application to a Pharmacokinetic Study

This study aimed to develop a selective, simple, and sensitive HPLC-MS/MS method for the simultaneous determination of schisandrin and promethazine (PMZ) with its metabolite in rat plasma, which was further used for a pharmacokinetic herb-drug interaction study. HPLC-MS/MS analyses were performed on an Agilent Technologies 1290 LC and a 6410 triple quadrupole mass spectrometer. The following parameters, the lower limit of quantification (LLOQ), calibration curve, accuracy, precision, stability, matrix effect, and recovery, were validated. The linear range of the developed method for PMZ, its metabolite promethazine sulfoxide (PMZSO), and schisandrin in rat plasma was 0.5-200 ng/mL (R 2 > 0.995), with an LLOQ of 0.5 ng/mL, which completely met the determination requirements of biosamples. The intra- and interday precision (RSD, %) was below 13.31% (below 16.67% for the LLOQ) in various plasma, whose accuracy (bias, %) was from -8.52% to 11.40%, which were both within an acceptable range. This method was successfully applied to a pharmacokinetic herb-drug interaction study after oral administration of PMZ with or without S. chinensis water extract. The results demonstrated that coadministration with the S. chinensis water extract might affect the pharmacokinetic behaviors of PMZ. In turn, when taken together with PMZ, the pharmacokinetic parameters of schisandrin, the main active component of S. chinensis, were also affected. The method established in the current study was selective, simple, sensitive, and widely available with good linearity, high accuracy and precision, and a stable sample preparation process. Moreover, this analytical method provides a significant approach for the investigation of herb-drug interaction between S. chinensis and PMZ. The potential pharmacokinetic herb-drug interaction of PMZ- and schisandrin-containing preparations should be noted.

Understanding CAM Use in Lebanon: Findings from a National Survey

The main objective of this study was to identify predictors of Complementary and Alternative Medicine (CAM) use in Lebanon. Data for this study were drawn from a national survey conducted among Lebanese adults (n=1500). A modified version of the Social Behavioral Model (SBM) was used to understand CAM use in the study population. In this version, predisposing factors included sociodemographic characteristics (age, gender, education, and employment) and Push and Pull factors. Additionally, enabling resources included income, and medical need encompassed presence of chronic disease and perceived health status. Simple and multiple logistic regressions were used to examine the predictors of CAM use in the study population. Results of the multiple logistic regression showed that younger and older adults were less likely to use CAM as compared to middle-aged respondents. The Push factor "dissatisfaction with conventional medicine" was associated with higher odds of CAM use. For three of the six Pull factors, compared to participants who strongly disagreed, those who had a tendency of taking care of one's health were more likely to use CAM. Income and presence of chronic disease were also associated with higher odds of CAM use. The findings of this study affirmed the utility of the SBM in explaining the use of CAM and proposed a new version of this model, whereby the Push and Pull factors are integrated within the predisposing factors of this model.

The Cytochrome P450-Mediated Metabolism Alternation of Four Effective Lignans From Schisandra chinensis in Carbon Tetrachloride-Intoxicated Rats and Patients With Advanced Hepatocellular Carcinoma

It is highly valuable to study the pharmacokinetics of herbal components under the pathological condition of liver dysfunction for safe and rational use of herbal medicines. In this study, the pharmacokinetic profiles of four effective lignans from Schisandra chinensis (SC), schisandrin, schisantherin A, deoxyshisandrin and γ-schisandrin, were investigated in carbon tetrachloride (CCl₄)-intoxicated rats. The metabolism of the four lignans was also studied using microsomes from patients with advanced hepatocellular carcinoma. In situ intestinal and hepatic perfusions were conducted to clarify the contributions from impairments of gut and liver on the pharmacokinetics of the four schisandra lignans in CCl₄-intoxicated rats. The metabolism in rat and human liver microsomes and transport in Caco-2 monolayer cell model were studied to reveal the key factors for the in vivo disposition of the four lignans. When SC alcoholic extract was orally administrated to CCl₄-intoxicated rat for a short term (4 days), the pharmacokinetics of four active SC lignans was significantly changed while its hepatotherapeutic effect was not obviously observed. The plasma concentrations of the four schisandra lignans were dramatically elevated compared with the control. The Cmax, AUC and MRT were all increased or prolonged significantly while parameter CLz/F was obviously reduced in rat pretreated with CCl₄. In hepatic perfusion study and liver microsomes incubation, it was found that the hepatic metabolism of the four lignans was markedly decreased mainly due to the activity reduction of multiple CYP450 isoenzymes involved the metabolism, which, eventually, might lead to the alternation of their pharmacokinetic profiles in CCl₄-intoxicated rats or patients with advanced hepatocellular carcinoma. The pharmacokinetic studies of SC components in pathological situation of liver dysfunction are expected to provide useful data for rational and safe application of SC preparations in clinic or further pharmacological and toxicological research.

Refugees in Conflict: Creating a Bridge Between Traditional and Conventional Health Belief Models

The recent wave of migration from Middle Eastern countries to Europe presents significant challenges to the European health profession. These include the inevitable communication gap created by differences in health care beliefs between European oncologists, health care practitioners, and refugee patients. This article presents the conclusions of a workshop attended by a group of clinicians and researchers affiliated with the Middle East Cancer Consortium, as well as four European-based health-related organizations. Workshop participants included leading clinicians and medical educators from the field of integrative medicine and supportive cancer care from Italy, Germany, Turkey, Israel, Palestine, Iran, Lebanon, Jordan, Egypt, and Sudan. The workshop illustrated the need for creating a dialogue between European health care professionals and the refugee population in order to overcome the communication barriers to create healing process. The affinity for complementary and traditional medicine (CTM) among many refugee populations was also addressed, directing participants to the mediating role that integrative medicine serves between CTM and conventional medicine health belief models. This is especially relevant to the use of herbal medicine among oncology patients, for whom an open and nonjudgmental (yet evidence-based) dialogue is of utmost importance. The workshop concluded with a recommendation for the creation of a comprehensive health care model, to include bio-psycho-social and cultural-spiritual elements, addressing both acute and chronic medical conditions. These models need to be codesigned by European and Middle Eastern clinicians and researchers, internalizing a culturally sensitive approach and ethical commitment to the refugee population, as well as indigenous groups originating from Middle Eastern and north African countries.

IMPLICATIONS FOR PRACTICE

European oncologists face a communication gap with refugee patients who have recently immigrated from Middle Eastern and northern African countries, with their different health belief models and affinity for traditional and herbal medicine. A culturally sensitive approach to care will foster doctor-refugee communication, through the integration of evidence-based medicine within a nonjudgmental, bio-psycho-social-cultural-spiritual agenda, addressing patients' expectation within a supportive and palliative care context. Integrative physicians, who are conventional doctors trained in traditional/complementary medicine, can mediate between conventional and traditional/herbal paradigms of care, facilitating doctor-patient communication through education and by providing clinical consultations within conventional oncology centers.