We have come a long way since the daily battles between the Kitchen Bitch and the HO Monster. I surely do not miss those days. Yet when I read about other people‘s battles, I am painfully reminded that the war against HO is far from over. I know that our case study had an “n” of only one, but I still hope to facilitate the process of helping others combat this rare obesity condition in all ways I can.
Here is a letter to the editor that I wrote to the journal, Obesity. I hope that it will help to educate and influence the attitude of prescribing physicians so that more HO sufferers can get the help they need. Since the publisher (Wiley) has some copyright restrictions on my sharing the final published article with social media and on blogs, I am sharing my pre-published and accepted manuscript; very little has been changed (only minor style edits) from the pre-published manuscript to the finalized version, link to Researchgate full article here: https://www.researchgate.net/profile/Eugenie_Hsu/publication/329187211/inline/jsViewer/5c03ea25a6fdcc1b8d502cd8
Hypothalamic Obesity Treatment Demands Thinking Outside the Box
Editor:
It was no surprise to read about the disappointing treatment outcomes in Rose et al.’s study describing the self-report data from the International Registry of Hypothalamic Obesity Disorders (1). The poor outcomes and the lack of effective treatment options informed by randomized controlled trials (RCTs) (2) make the clinical management of hypothalamic obesity (HO) very challenging indeed. Besides the severe cardiometabolic morbidities associated with HO (3), HO is also greatly responsible for the poor quality of life among its sufferers (4). As a mother to a boy with craniopharyngioma (CP)-HO and hyperphagia, I don’t need to read the medical literature to know about the torment of living with CP-HO.
My post-operative CP son was consumed with hunger and would stop at nothing to find food. His poor satiety was evidenced by his constant complaints of hunger and persistent efforts to steal and stash food. Without effective treatment for his severe hyperphagia and concurrent obesity, we resorted to enforcing lifestyle restrictions common to families with a child with Prader-Willi syndrome (PWS). Five years into intense dietary restrictions, food policing and lockdown, my son remained obese and I knew our restrictive lifestyle was unsustainable. Feeling frantic for a solution, I joined CP and PWS parent support groups and scoured the medical literature. Despite his having panhypopituitarism, I learned that not all of his hormones were being replaced, notably oxytocin. When I read that some of oxytocin’s functions matched my son’s untreated symptoms, I was determined to have him try it.
In 2016, my son began an experimental trial of intranasal oxytocin and ten weeks into the experiment, naltrexone was added.The successful 48-week experiment was published as a case report (5). After more than two years, my son has maintained his positive treatment outcomes: his current BMI is 22.8 and his appetite is normal. We have ceased our former food-restricted lifestyle. He has no adverse effects to oxytocin just as he has no adverse effects to his other replacement hormones.
Despite my son’s successful treatment outcome, our published case report, numerous pre-clinical studies on oxytocin’s effect on energy balance and weight loss (6), promising results from nascent clinical studies (7), the dearth of effective treatment, and the poor quality of life of HO sufferers, HO patients’ requests to their physicians for oxytocin are typically denied. Why? According to these patients’ physicians, oxytocin is “useful for lactation and labor induction only” or that “sufficient research is lacking” to justify a prescription for oxytocin.
A clinical trial testing oxytocin for CP-HO is now underway (NCT02849743). Yet while we impatiently await RCT-endorsed efficacious treatment for this rare condition, patients continue to suffer. As a mother who has seen her son transformed by a more novel approach, I hope that more HO patients are able to access atypical and promising treatments, such as oxytocin. Until HO sufferers can rely upon a gold standard intervention, I assert that successfully treating HO demands thinking outside-the-box with cutting edge approaches; indeed, I am glad that I did.
REFERENCES
1. Rose SR, Horne VE, Bingham N, Jenkins T, Black J, Inge T.Hypothalamic Obesity: 4 Years of the International Registry of Hypothalamic Obesity Disorders. Obesity 2018;0(0). doi:10.1002/oby.22315.
2. Ni W, Shi X. Interventions for the Treatment of Craniopharyngioma-Related Hypothalamic Obesity: A Systematic Review. World Neurosurg. 2018. doi:10.1016/j.wneu.2018.06.121.
3. Wang KW, Chau R, Fleming A, Banfield L, Singh SK, Johnston DL, Zelcer SM, Rassekh SR, Burrow S, Valencia M, de Souza RJ, Thabane L, Samaan MC. The effectiveness of interventions to treat hypothalamic obesity in survivors of childhood brain tumours: a systematic review. Obes. Rev. 2017. doi:10.1111/obr.12534.
4. Mortini P. Craniopharyngiomas: a life-changing tumor. Endocrine 2017. doi:10.1007/s12020-016-1192-2.
5. Hsu EA, Miller JL, Perez FA, Roth CL. Oxytocin and naltrexone successfully treat hypothalamic obesity in a boy post-craniopharyngioma resection. J. Clin. Endocrinol. Metab.2018;103(2). doi:10.1210/jc.2017-02080.
6. Skinner JA, Garg ML, Dayas C V., Fenton S, Burrows TL.Relationship between dietary intake and behaviors with oxytocin: A systematic review of studies in adults. Nutr. Rev. 2018. doi:10.1093/nutrit/nux078.
7. Olszewski PK, Klockars A, Levine AS. Oxytocin and potential benefits for obesity treatment. Curr. Opin. Endocrinol. Diabetes Obes. 2017. doi:10.1097/MED.0000000000000351.
If you want to see the article in its online form, you may click on this link but you will need to be a subscriber to the journal to see the article in its entirety. https://onlinelibrary.wiley.com/doi/pdf/10.1002/oby.22371
As I have mentioned before, I do not ask for any compensation or any special thanks for my writing or advocacy. However, if you care to support a wonderful not-for-profit organization that helps improve the quality of life for pediatric brain tumor survivors, please donate to the Raymond A. Wood Foundation, thank you! https://www.rawoodfoundation.org/donate/
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