Search the Community
Showing results for tags 'hypopituitarism'.
The search index is currently processing. Current results may not be complete.
Found 6 results
-
In patients with Cushing’s disease, removing the pituitary tumor via an endoscopic transsphenoidal surgery (TSS) leads to better remission rates than microscopic TSS, according to new research. But regardless of surgical approach, plasma cortisol levels one day after surgery are predictive of remission, researchers found. The study, “Management of Cushing’s disease: Changing trend from microscopic to endoscopic surgery,” was published in the journal World Neurosurgery. Because it improves visualization and accessibility, endoscopic TSS has been gaining popularity over microscopic TSS to remove pituitary tumors in Cushing’s disease patients. Yet, although this surgery has been associated with high remission rates, whether it outperforms microscopic surgery and determining the factors affecting long-term outcomes may further ease disease recurrence after TSS. A team with the All India Institute of Medical Sciences addressed this topic in 104 patients who underwent surgery from January 2009 to June 2017. Among these patients, 47 underwent microscopic surgery and 55 endoscopic surgery. At presentation, their ages ranged from 9 to 55 (mean age of 28). Also, patients had been experiencing Cushing’s symptoms over a mean duration of 24 months. Eighty-seven patients showed weight gain. Hypertension (high blood pressure) and diabetes mellitus were among the most common co-morbidities, found in 76 and 33 patients, respectively. Nineteen patients had osteoporosis and 12 osteopenia, which refers to lower-than-normal bone mineral density. As assessed with magnetic resonance imaging, 68 patients had a microadenoma (a tumor diameter smaller than one centimeter) and 27 had a macroadenoma (a tumor one centimeter or larger). Only two patients had an invasive pituitary adenoma. Two patients with larger tumors were operated on transcranially (through the skull). The surgery resulted in total tumor removal in 90 cases (86.5%). A blood loss greater than 100 milliliter was more common with endoscopic than with microscopic TSS. Ten patients developed transient diabetes inspidus, two experienced seizures after surgery, and six of nine patients with macroadenoma and visual deterioration experienced vision improvements after TSS. The incidence of intraoperative leak of cerebrospinal fluid — the liquid surrounding the brain and spinal cord — was 23.2%, while that of post-operative leak was 7.7% and was more common in microadenoma than macroadenoma surgery (9.8% vs. 5.0%). Seventeen patients were lost to follow-up and two died due to metabolic complications and infections. The average follow-up was shorter for endoscopic than with microscopic surgery (18 months vs. 35 months). Among the remaining 85 cases, 65 (76.5%) experienced remission, as defined by a morning cortisol level under 5.0 μg/dL, restored circadian rhythm (the body’s internal clock, typically impaired in Cushing’s patients), and suppression of serum cortisol to below 2 μg/dl after overnight dexamethasone suppression test. The remission rate was 54.5% in pediatric patients and was higher with endoscopic than with microscopic TSS (88.2% vs. 56.6%). Also, patients with microadenoma showed a trend toward more frequent remission than those with macroadenoma (73.2% vs. 64.3%). Ten of the remaining 20 patients experienced disease recurrence up to 28 months after surgery. Sixteen cases revealed signs of hypopituitarism, or pituitary insufficiency, which were managed with replacement therapy. A subsequent analysis found that morning cortisol level on day one after surgery was the only significant predictor of remission. Specifically, a one-unit increase in cortisol lowered the likelihood of remission by 7%. A cortisol level lower than 10.7 μgm/dl was calculated as predicting remission. Overall, the study showed that “postoperative plasma cortisol level is a strong independent predictor of remission,” the researchers wrote, and that “remission provided by endoscopy is significantly better than microscopic approach.” From https://cushingsdiseasenews.com/2019/09/24/cortisol-levels-predict-remission-cushings-patients-undergoing-transsphenoidal-surgery/ -
LOS ANGELES — More than a century has passed since the neurosurgeon and pathologist Harvey Cushing first discovered the disease that would eventually bear his name, but only recently have several key discoveries offered patients with the condition real hope for a cure, according to a speaker here. There are several challenges clinicians confront in the diagnosis and treatment of Cushing’s disease, Shlomo Melmed, MB, ChB, FRCP, MACP, dean, executive vice president and professor of medicine at Cedars-Sinai Medical Center in Los Angeles, said during a plenary presentation. Patients who present with Cushing’s disease typically have depression, impaired mental function and hypertension and are at high risk for stroke, myocardial infarction, thrombosis, dyslipidemia and other metabolic disorders, Melmed said. Available therapies, which range from surgery and radiation to the somatostatin analogue pasireotide (Signifor LAR, Novartis), are often followed by disease recurrence. Cushing’s disease is fatal without treatment; the median survival if uncontrolled is about 4.5 years, Melmed said. “This truly is a metabolic, malignant disorder,” Melmed said. “The life expectancy today in patients who are not controlled is apparently no different from 1930.” The outlook for Cushing’s disease is now beginning to change, Melmed said. New targets are emerging for treatment, and newly discovered molecules show promise in reducing the secretion of adrenocorticotropic hormone (ACTH) and pituitary tumor size. “Now, we are seeing the glimmers of opportunity and optimism, that we can identify specific tumor drivers — SST5, [epidermal growth factor] receptor, cyclin inhibitors — and we can start thinking about personalized, precision treatment for these patients with a higher degree of efficacy and optimism than we could have even a year or 2 ago,” Melmed said. “This will be an opportunity for us to broaden the horizons of our investigations into this debilitating disorder.” Challenges in diagnosis, treatment Overall, about 10% of the U.S. population harbors a pituitary adenoma, the most common type of pituitary disorder, although the average size is only about 6 mm and 40% of them are not visible, Melmed said. In patients with Cushing’s disease, surgery is effective in only about 60% to 70% of patients for initial remission, and overall, there is about a 60% chance of recurrence depending on the surgery center, Melmed said. Radiation typically leads to hypopituitarism, whereas surgical or biochemical adrenalectomy is associated with adverse effects and morbidity. Additionally, the clinical features of hypercortisolemia overlap with many common illnesses, such as obesity, hypertension and type 2 diabetes. “There are thousands of those patients for every patient with Cushing’s disease who we will encounter,” Melmed said. The challenge for the treating clinician, Melmed said, is to normalize cortisol and ACTH with minimal morbidity, to resect the tumor mass or control tumor growth, preserve pituitary function, improve quality of life and achieve long-term control without recurrence. “This is a difficult challenge to meet for all of us,” Melmed said. Available options Pituitary surgery is typically the first-line option offered to patients with Cushing’s disease, Melmed said, and there are several advantages, including rapid initial remission, a one-time cost and potentially curing the disease. However, there are several disadvantages with surgery; patients undergoing surgery are at risk for postoperative venous thromboembolism, persistent hypersecretion of ACTH, adenoma persistence or recurrence, and surgical complications. Second-line options are repeat surgery, radiation, adrenalectomy or medical therapy, each with its own sets of pros and cons, Melmed said. “The reality of Cushing’s disease — these patients undergo first surgery and then recur, second surgery and then recur, then maybe radiation and then recur, and then they develop a chronic illness, and this chronic illness is what leads to their demise,” Melmed said. “Medical therapy is appropriate at every step of the spectrum.” Zebrafish clues Searching for new options, Melmed and colleagues introduced a pituitary tumor transforming gene discovered in his lab into zebrafish, which caused the fish to develop the hallmark features of Cushing’s disease: high cortisol levels, diabetes and cardiovascular disease. In the fish models, researchers observed that cyclin E activity, which drives the production of ACTH, was high. Melmed and colleagues then screened zebrafish larvae in a search for cyclin E inhibitors to derive a therapeutic molecule and discovered R-roscovitine, shown to repress the expression of proopiomelanocortin (POMC), the pituitary precursor of ACTH. In fish, mouse and in vitro human cell models, treatment with R-roscovitine was associated with suppressed corticotroph tumor signaling and blocked ACTH production, Melmed said. “Furthermore, we asked whether or not roscovitine would actually block transcription of the POMC gene,” Melmed said. “It does. We had this molecule (that) suppressed cyclin E and also blocks transcription of POMC leading to blocked production of ACTH.” In a small, open-label, proof-of-principal study, four patients with Cushing’s disease who received roscovitine for 4 weeks developed normalized urinary free cortisol, Melmed said. Currently, the FDA Office of Orphan Products Development is funding a multicenter, phase 2, open-label clinical trial that will evaluate the safety and efficacy of two of three potential doses of oral roscovitine (seliciclib) in patients with newly diagnosed, persistent or recurrent Cushing disease. Up to 29 participants will be treated with up to 800 mg per day of oral seliciclib for 4 days each week for 4 weeks and enrolled in sequential cohorts based on efficacy outcomes. “Given the rarity of the disorder, it will probably take us 2 to 3 years to recruit patients to give us a robust answer,” Melmed said. “This zebrafish model was published in 2011, and we are now in 2019. It has taken us 8 years from publication of the data to, today, going into humans with Cushing’s. Hopefully, this will light the pathway for a phase 2 trial.” ‘ Offering optimism’ Practitioners face a unique paradigm when treating patients with Cushing’s disease, Melmed said. Available first- and second-line therapy options often are not a cure for many patients, who develop multimorbidity and report a low quality of life. “Then, we are kept in this difficult cycle of what to do next and, eventually, running out of options,” Melmed said. “Now, we can look at novel, targeted molecules and add those to our armamentarium and at least offer our patients the opportunity to participate in trials, or at least offer the optimism that, over the coming years, there will be a light at the end of the tunnel for their disorder.” Melmed compared the work to Lucas Cranach’s Fons Juventutis (The Fountain of Youth). The painting, completed in 1446, shows sick people brought by horse-drawn ambulance to a pool of water, only to emerge happy and healthy. “He was imagining this ‘elixir of youth’ (that) we could offer patients who are very ill and, in fact, that is what we as endocrinologists do,” Melmed said. “We offer our patients these elixirs. These Cushing’s patients are extremely ill. We are trying with all of our molecular work and our understanding of pathogenesis and signaling to create this pool of water for them, where they can emerge with at least an improved quality of life and, hopefully, a normalized mortality. That is our challenge.” – by Regina Schaffer Reference: Melmed S. From zebrafish to humans: translating discoveries for the treatment of Cushing’s disease. Presented at: AACE Annual Scientific and Clinical Congress; April 24-28, 2019; Los Angeles. Disclosure: Melmed reports no relevant financial disclosures. From https://www.healio.com/endocrinology/neuroendocrinology/news/online/%7B585002ad-640f-49e5-8d62-d1853154d7e2%7D/new-discoveries-offer-possible-cushings-disease-cure
- 3 replies
-
- 1
-
-
- dr. shlomo melmed
- radiation
- (and 3 more)
-
A man with Cushing’s disease — caused by an adrenocorticotrophic hormone (ACTH)-secreting pituitary adenoma — who later developed metastases in the central nervous system without Cushing’s recurrence, was successfully treated over eight years with radiation and chemotherapy, according to a case report. The report, “Long-term survival following transformation of an adrenocorticotropic hormone secreting pituitary macroadenoma to a silent corticotroph pituitary carcinoma: Case report,” was published in the journal World Neurosurgery. Pituitary carcinomas make up only 0.1-0.2% of all pituitary tumors and are characterized by a primary pituitary tumor that metastasizes into cranial, spinal, or systemic locations. Fewer than 200 cases have been reported in the literature. Most of these carcinomas secrete hormones, with ACTH being the most common. Though the majority of ACTH-secreting carcinomas present with Cushing’s disease, about one-third do not show symptoms of the condition and have normal serum cortisol and ACTH levels. These are called silent corticotroph adenomas and are considered more aggressive. A research team at the University of Alabama at Birmingham presented the case of a 51-year-old Caucasian man with ACTH-dependent Cushing’s disease. He had undergone an incomplete transsphenoidal (through the nose) resection of an ACTH-secreting pituitary macroadenoma – larger than 10 mm in size – and radiation therapy the year before. At referral in August 1997, the patient had persistent high cortisol levels and partial hypopituitarism, or pituitary insufficiency. He exhibited Cushing’s symptoms, including facial reddening, moon facies, weight gain above the collarbone, “buffalo hump,” and abdominal stretch marks. About two years later, the man was weaned off ketoconazole — a medication used to lower cortisol levels — and his cortisol levels had been effectively reduced. He also had no physical manifestations of Cushing’s apart from facial reddening. In May 2010, the patient reported two episodes of partial seizures, describing two spells of right arm tingling, followed by impaired peripheral vision. Imaging showed a 2.1-by-1-cm mass with an associated cyst within the brain’s right posterior temporal lobe, as well as a 1.8-by-1.2-cm mass at the cervicomedullary junction, which is the region where the brainstem continues as the spinal cord. His right temporal cystic mass was then removed by craniotomy. A histopathologic analysis was consistent with pituitary carcinoma. Cell morphology was generally similar to the primary pituitary tumor, but cell proliferation was higher. Physical exams showed no recurrence of Cushing’s disease and 24-hour free urinary cortisol was within the normal range. His cervicomedullary metastasis was treated with radiation therapy in July 2010. He took the oral chemotherapy temozolomide until August 2011, and Avastin (bevacizumab, by Genentech) was administered from September 2010 to November 2012. At present, the patient continues to undergo annual imaging and laboratory draws. He receives treatment with hydrocortisone, levothyroxine — synthetic thyroid hormone — and testosterone replacement with androgel. His most recent exam showed no progression over eight years of a small residual right temporal cyst, a residual mass along the pituitary stalk — the connection between the hypothalamus and the pituitary gland — and a small residual mass at the cervicomedullary junction. Lab results continue to show no Cushing’s recurrence. “Our case is the first to document a patient who initially presented with an endocrinologically active ACTH secreting pituitary adenoma and Cushing’s disease who later developed cranial and spinal metastases without recurrence of Cushing’s disease and transformation to a silent corticotroph pituitary carcinoma,” the scientists wrote. They added that the report is also the first documenting “8 years of progression-free survival in a patient with pituitary carcinoma treated with radiotherapy, [temozolomide] and bevacizumab.” Adapted from https://cushingsdiseasenews.com/2019/01/03/successful-treatment-pituitary-carcinoma-radiation-chemo-case-report/
-
- 1
-
-
- cushings disease
- pituitary carcinoma
- (and 4 more)
-
Dr. Theodore Friedman’s next webinar will be on the Macrilen Stimulation Test for Growth Hormone Deficiency: Sunday, December 9, 2018, 6 PM PST Adult growth hormone deficiency occurs in patients with hypopituitarism and can occur in those with a pituitary tumor. A growth hormone stimulation test is needed to make the diagnosis of adult growth hormone deficiency. Dr. Theodore Friedman’s next webinar will be on the Macrilen Stimulation Test for Growth Hormone Deficiency: Sunday, December 9, 2018, 6-7 PM PST. He will discuss the new Macrilen stimulation test and compare it to the glucagon stimulation. If you may have growth hormone deficiency, you do not want to miss this webinar. 6:00 pm | Pacific Standard Time, 9:00 pm Eastern Standard Time Meeting number (access code): 284 045 554, Meeting password: growth join the meeting at https://axisconciergemeetings.webex.com/webappng/sites/axisconciergemeetings/meeting/info/112079331212153316?MTID=ma5789d4e965d2af1c3ceedc7d92172c7 Slides will be available before the webinar at https://www.dropbox.com/sh/6lk0cmx5ae0bv7t/AADtLykFSioSmiRm6Rf4_tyta?dl=0 Join by phone +1-855-797-9485 US Toll free You can join on a website (that will allow you to hear the presentation and view the slides) or by telephone (that will allow you only to hear the presentation). There will be time for questions by “chat” and the video conference will be posted on goodhormonehealth.com a few days after. You will be required to mute your phones/computers. Please contact us at mail@goodhormonehealth.com if you have questions.
-
- 1
-
-
- dr. theodore friedman
- dr. f
- (and 5 more)
-
Webinar: Oxytocin and Hypopituitarism: A Missing Forgotten Hormone?
MaryO posted a calendar event in Cushie Calendar
untilThursday May 31, 2018 1:00 PM - 2:00 PM EDT Presented by Yuval Eisenberg, MD Assistant Professor of Medicine University of Illinois, at Chicago (UIC) Division of Endocrinology, Diabetes and Metabolism Webinar Description Learning Objectives: 1) Review the functions of oxytocin in humans 2) Describe areas of active research on oxytocin effects 3) Review the relevant oxytocin and hypopituitarism literature Presenter Bio Dr. Yuval Eisenberg is an endocrinologist at the University of Illinois, at Chicago (UIC). Dr. Eisenberg studied Medicine at Rush Medical College in Chicago and then did his internship, residency and fellowship at the University of Illinois at Chicago. He is certified in Internal Medicine and Endocrinology. Dr. Yuval Eisenberg strives to connect with his patients and provide top quality medical care. He believes strongly that a good patient/doctor relationship is the backbone for successful medical practice. His goal with each visit is to listen, inquire, and educate and to assist you with making important medical decisions. Although his main focus is General Endocrinology, Dr. Eisenberg has a specialized interest in pituitary and adrenal disorders. Dr. Eisenberg's research interest in in the hormone oxytocin and how it might affect patients with pituitary hormone deficiencies (hypopituitarism). Register at https://register.gotowebinar.com/register/8391851366080015362?utm_source=newsletter_271&utm_medium=email&utm_campaign=webinar-announcement-webinar-oxytocin-and-hypopituitarism-a-missing-forgotten-hormone -
Thursday May 31, 2018 1:00 PM - 2:00 PM EDT Presented by Yuval Eisenberg, MD Assistant Professor of Medicine University of Illinois, at Chicago (UIC) Division of Endocrinology, Diabetes and Metabolism Webinar Description Learning Objectives: 1) Review the functions of oxytocin in humans 2) Describe areas of active research on oxytocin effects 3) Review the relevant oxytocin and hypopituitarism literature Presenter Bio Dr. Yuval Eisenberg is an endocrinologist at the University of Illinois, at Chicago (UIC). Dr. Eisenberg studied Medicine at Rush Medical College in Chicago and then did his internship, residency and fellowship at the University of Illinois at Chicago. He is certified in Internal Medicine and Endocrinology. Dr. Yuval Eisenberg strives to connect with his patients and provide top quality medical care. He believes strongly that a good patient/doctor relationship is the backbone for successful medical practice. His goal with each visit is to listen, inquire, and educate and to assist you with making important medical decisions. Although his main focus is General Endocrinology, Dr. Eisenberg has a specialized interest in pituitary and adrenal disorders. Dr. Eisenberg's research interest in the hormone oxytocin and how it might affect patients with pituitary hormone deficiencies (hypopituitarism). Register at https://register.gotowebinar.com/register/8391851366080015362?utm_source=newsletter_271&utm_medium=email&utm_campaign=webinar-announcement-webinar-oxytocin-and-hypopituitarism-a-missing-forgotten-hormone
