Biocon Limited signs an exclusive licensing and supply agreement for generic Ozempic (Semaglutide) commercialization in Brazil with Biomm S.A.

Bengaluru: Biocon Limited, an innovation-led global
biopharmaceutical company, has announced the signing of an exclusive licensing and
supply agreement with Biomm S.A., a specialty pharmaceutical company in Brazil, for the
commercialization of its vertically integrated drug product, Semaglutide (gOzempic), which is
used to improve glycemic control in adults with type-2 diabetes.

Under the terms of this agreement, Biocon will undertake the development, manufacturing
and supply of the drug product, and Biomm will be responsible for obtaining regulatory
approval and commercialization in the Brazilian market.


Biomm is Brazil’s biotechnology company focuses on developing, manufacturing and
commercializing complex biotech and biosimilar drug products at their state-of-the-art
production facility in Nova Lima.

Siddharth Mittal, Chief Executive Officer and Managing Director, Biocon Ltd, said, “Our
partnership with Biomm marks another important step forward in our strategy to expand our
global footprint beyond the U.S. and Europe for Peptides. This is also in line with our growth
strategy of bringing to market a portfolio of complex, GLP-1 drug-device combination
products. We are confident that our collaboration with Biomm will provide patients in Brazil,
who are living with diabetes, much needed access to advanced, high quality treatment options
to help them manage the disease better.”

Heraldo Marchezini, Chief Executive Officer, Biomm, commented: “Brazil is the fifth country
in the world with the highest incidence of diabetes, having 16.8 million adults in the age group
of 20 to 79 years with the disease, and an estimated 21.5 million cases by 2030, according to
the Diabetes Atlas of the International Diabetes Federation (IDF). We have, therefore,
prioritized strategic partnerships to expand the population’s access to advanced treatments
for this disease and enhance the quality of life for people”.

The total addressable market opportunity of Semaglutide in Brazil is approximately US $580
million as per the IQVIA MAT Q4 2023.

Read also: Biocon gets MHRA UK nod for weight management injection Liraglutide

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SGLT2 inhibitors tied to lower risk of incident gout vis a vis sulfonylureas in diabetes patients: JAMA

USA: The use of SGLT2 inhibitors versus sulfonylureas was associated with a lower risk of incident gout, heart failure (HF), and major adverse cardiovascular events (MACEs), and lower rates of recurrent flares in a population-based cohort study of 34 064 adults with type 2 diabetes (T2D). The study findings were published online in JAMA Internal Medicine on April 15, 2024.

“The gout and cardiovascular benefits associated with sodium-glucose cotransporter-2 inhibitors (SGLT2i) in these target trial emulations may guide the selection of glucose-lowering therapy in type 2 diabetes patients, at risk for or with gout,” the researchers wrote.

Gout, characterized by recurrent attacks of inflammatory arthritis, stands as a formidable challenge for individuals grappling with type 2 diabetes. The intricate interplay between metabolic dysregulation, insulin resistance, and purine metabolism sets the stage for elevated uric acid levels, predisposing diabetic patients to gout flares. Against this backdrop, pharmacotherapeutic interventions assume pivotal significance in mitigating gout risk while navigating the complexities of diabetes management.

SGLT-2 inhibitors, hailed for their pleiotropic benefits beyond glycemic control, have emerged as promising candidates in the armamentarium of diabetes therapeutics. Their unique mechanism of action, which involves inhibiting renal glucose reabsorption, culminates in glycosuria-mediated uric acid excretion, thus ostensibly conferring a protective effect against gout. On the other hand, sulfonylureas, the most common second-line glucose-lowering therapy exert their antidiabetic effects by stimulating insulin secretion, albeit with potential adverse metabolic consequences, including weight gain and hyperinsulinemia, which could exacerbate gout risk.

In diabetes management, the quest for optimal pharmacotherapy extends beyond glycemic control to encompass multifaceted considerations, including cardiovascular risk mitigation and comorbidity management.

Against the above background, Natalie McCormick, The Mongan Institute, Department of Medicine, Massachusetts General Hospital, Boston, and colleagues aimed to compare incident gout risk and recurrent flares rate between patients with type 2 diabetes initiating SGLT2i versus sulfonylurea when added to metformin monotherapy.

For this purpose, the researchers conducted a sequential, propensity score-matched, new-user comparative effectiveness study using a target trial emulation framework including adults with T2D receiving metformin monotherapy in a Canadian general population database from 2014 to 2022.

The primary outcome was a diagnosis of incident gout, ascertained by emergency department (ED), hospital, outpatient, and medication dispensing records. Secondary outcomes included gout-primary hospitalizations, ED visits, and MACE, as well as recurrent flare rates among prevalent gout patients.

HF hospitalization was assessed as a positive control outcome and osteoarthritis encounters as a negative control. For target trial emulations, the researchers used Poisson regressions and Cox proportional hazards with 1:1 propensity score matching (primary analysis) and overlap weighting (sensitivity analysis).

Following were the study’s key findings:

  • Among 34 604 propensity score matched adults with T2D initiating SGLT2i or sulfonylurea (60% male, mean age, 60 years), incidence of gout was lower among SGLT2i initiators (4.27 events per 1000 person-years) than sulfonylurea initiators (6.91 events per 1000 person-years), with a hazard ratio (HR) of 0.62 and a rate difference (RD) of −2.64 per 1000 person-years.
  • Associations persisted regardless of sex, age, or baseline diuretic use.
  • SGLT2i use was also associated with fewer recurrent flares among gout patients (rate ratio, 0.67 and RD, −20.9 per 1000 person-years).
  • HR and RD for MACE associated with SGLT2i use were 0.87 and −3.58 per 1000 person-years.
  • For control outcomes, SGLT2i users had a lower risk of HF (HR, 0.53), as expected, with no difference in osteoarthritis (HR, 1.11).
  • Results were similar when applying propensity score overlap weighting.

In conclusion, in this population-based cohort study, the gout and CV benefits associated with SGLT2 inhibitors in these target trial emulations may guide the selection of glucose-lowering therapy in patients with T2D, at risk for or already with gout.

Reference:

McCormick N, Yokose C, Lu N, et al. Sodium-Glucose Cotransporter-2 Inhibitors vs Sulfonylureas for Gout Prevention Among Patients With Type 2 Diabetes Receiving Metformin. JAMA Intern Med. Published online April 15, 2024. doi:10.1001/jamainternmed.2024.0376

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GBL Hospital Indore holds free medical camp on Robotic Surgeries and Cosmetic Procedures

Indore: GBL Hospital, founded by renowned surgeons Dr Vineet Gautam and Dr Ekta Mishra, has emerged as a leader in the realm of Robotic surgeries, Liver Treatments, and various Cosmetic Procedures, offering top-notch, affordable, and hassle-free care to its patients.

Set to take place on April 19th and 20th, 2024, the upcoming free medical camp aims to extend expert medical guidance and advice to individuals courtesy of the seasoned professionals at GBL Hospital. Patients seeking solutions for a range of surgical requirements, including Robotic Surgeries for intricate procedures, complex GI surgeries, bariatric interventions, and cosmetic enhancements, stand to benefit from this initiative.

Also Read:AINU observes landmark achievement of 1000 Robotic surgeries in Urology and Nephrology Care

According to a PTI report, Dr Vineet Gautam, with years of experience in liver transplant and Robotic surgery, and Dr Punit Tiwari, with years of experience as Urologist and Robotic Surgeon brings a holistic approach to patient care.

Their expertise ensures precision and minimally invasive interventions, promising enhanced recovery and outcomes for patients. On the other hand, Dr Ekta Mishra Gautam, specializing in Cosmetic, Plastic and Reconstructive Surgeries, adds a unique dimension to the hospital’s offerings. Her dedication to providing personalized care and achieving aesthetic excellence has earned accolades from patients and peers alike. 

This free medical camp epitomizes GBL Hospital’s dedication to community welfare and healthcare accessibility, representing a sincere effort to extend support to all individuals who may benefit from specialized surgeries.

Through such initiatives, GBL Hospital continues to uphold its esteemed reputation for excellence and compassion in the healthcare domain, contributing significantly to the betterment of the lives of residents in Indore and beyond.

Medical Dialogues team earlier reported that in a heartfelt journey back to his roots, Dr Sukhwinder Singh Sandhu, a distinguished specialist in internal medicine and gastroenterology, has returned to Punjab from the United States to conduct free medical camps for underprivileged villagers in Moga district. 

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Does yoghurt help in prevention of diabetes and obesity?

A recent study published in Frontiers in Nutrition discussed the role of yoghurt as a nutritious food in preventing and managing diabetes and obesity.

Yoghurt, a low-calorie fermented dairy product, offers a balanced mix of proteins, essential nutrients, and beneficial bacteria. Studies have linked yoghurt consumption to lower risks of obesity, diabetes, osteoporosis, and heart disease while improving gut health and boosting immune function. According to an economic model for yoghurt use in diabetes risk reduction, the consumption of 100 grams of yogurt each day by adults can lead to 388,000 fewer people developing diabetes in the next 25 years.
In the study, researchers analyzed yogurt consumption data in the Argentine population, revealing an average annual intake of four kilograms per person. Over the past decade, both full-fat and skim yogurt consumption has declined by 44%. In 2019, diabetes prevalence was estimated at 13%.
Low-fat yogurt’s anti-diabetic properties stem from its low glycemic load and nutrient content, including proteins, calcium, magnesium, and vitamin D. Certain saturated fatty acids in yogurt are linked to reduced diabetes risk, with daily consumption of 50 grams associated with a 7% lower risk.Yogurt’s beneficial bacteria improve blood lipid profiles, lower cholesterol, and boost antioxidant status in diabetic patients. Additionally, yogurt’s organic acids, like lactic acid, reduce postprandial blood glucose and insulin levels.
Gut microbiota imbalance is a key factor in obesity, causing changes like increased fat deposition and metabolic dysfunction. Yoghurt, with its nutritious elements and beneficial bacteria, can mitigate obesity risk by replacing unhealthy foods. It also influences appetite regulation, energy balance, and body mass index (BMI).
The findings of the study indicated that yogurt consumption could be beneficial for the prevention and management of both diabetes and obesity. The rising prevalence of these chronic diseases throughout the world emphasizes the importance of encouraging people to incorporate yogurt as part of their healthy diet to improve public health.
Reference: Britos, S., Gonzalez, A. F., Marco, F. F., et al. (2024). Yogurt, in the context of a healthy diet, for the prevention and management of diabetes and obesity: a perspective from Argentina. Frontiers in Nutrition. doi:10.3389/fnut.2024.1373551.

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Deep anesthesia may reduce pain after sleeve gastrectomy in obese patients, suggests research

The findings of a recent clinical trial determined that obese patients who undergo laparoscopic sleeve gastrectomy experience significantly lower levels of acute postoperative pain (APP) when subjected to deeper levels of anesthesia. The findings of this study were published in the recent edition of Obesity Surgery journal offers new insights into pain management protocols that could improve the recovery outcomes.

This prospective, double-blinded randomized clinical trial included 90 patients and segregated them into two groups based on the depth of anesthesia administered during surgery. One group received what is termed as light anesthesia (Bispectral Index of 50, BIS 50), while the other was subjected to deeper anesthesia (BIS 35). Close monitoring of the pain levels was performed with the visual analogue scale (VAS) at various intervals post-surgery, specifically at 0, 12, 24, 48 and 72 hours. Along with pain levels, this study evaluated the use of analgesics, incidence of postoperative nausea and vomiting (PONV) and overall patient recovery quality through the Quality of Recovery-15 (QoR-15) score.

The results from this trial indicated that patients in the BIS 35 (deep anesthesia) group reported lower pain scores at the initial 24 hours post-operation when compared to their counterparts in the BIS 50 group. Also, these patients also expressed a reduced need for pain relief medication during their recovery period. Assessments carried out on the third day post-surgery showed elevated patient satisfaction in the group that received deeper anesthesia.

These findings suggest that the depth of anesthesia plays a pivotal role in managing APP and contributes towards reducing the consumption of analgesics and enhancing the patient satisfaction. The reduction in pain experienced by the deep anesthesia group could significantly impact recovery trajectories which potentially leads to quicker discharges from the hospital and better overall recovery experiences.

The implications of this study are majorly important for the surgical management of obesity, which is linked to increased sensitivity to pain. Thereby, optimizing anesthesia protocols during surgeries like the laparoscopic sleeve gastrectomy could become a critical element of surgical strategies. This research opens new avenues for patient care and also sets the stage for further studies and trials to explore how anesthetic depth can be leveraged to improve surgical recovery across the different types of operations.

Reference:

Zhang, X., Chen, X.-Y., Gao, R.-J., Huang, Y., Mao, S.-M., & Feng, J.-Y. (2024). The Effect of Depth of Anesthesia on Postoperative Pain in Laparoscopic Sleeve Gastrectomy: A Randomized Controlled Trial. In Obesity Surgery. Springer Science and Business Media LLC. https://doi.org/10.1007/s11695-024-07207-3

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Rivaroxaban Plus Aspirin Shows Favorable Benefit-Risk Profile in PAD Patients after revascularization, suggests study

The VOYAGER PAD trial evaluated the efficacy and safety of rivaroxaban plus aspirin compared to aspirin alone in patients with symptomatic peripheral artery disease (PAD) undergoing lower extremity revascularization procedures. Recently, the US Food and Drug Administration requested additional quantitative benefit-risk analyses to inform decision-making.

The researchers have found in a new study that in patients with PAD who had undergone lower‐extremity revascularization receiving antiplatelet therapy, rivaroxaban 2.5 mg twice daily demonstrated a favorable benefit-risk profile compared with placebo. Further the findings were more pronounced with the on‐treatment analysis and generally consistent between unweighted assessment and weighted MCDA analyses.

The study published in the Journal Of The American Heart Association was conducted by Zhong Y. and colleagues.

Peripheral artery disease is a common condition associated with significant morbidity and mortality due to thrombotic vascular events. Antithrombotic therapy, such as rivaroxaban and aspirin, has been studied to reduce the risk of these events in PAD patients undergoing revascularization procedures. However, balancing the benefits and risks of such therapy is crucial for clinical decision-making.

The analysis assessed benefits and risks using rate differences between treatment groups and conducted a multi-criteria decision analysis incorporating health state utility values as weights. Monte Carlo simulations were used to incorporate statistical uncertainties. Intent-to-treat and on-treatment analyses were performed.

The key findings of the study were as follows:

  • Rivaroxaban plus aspirin resulted in 120 fewer events of the primary composite endpoint per 10,000 patient-years compared to aspirin alone.

  • However, rivaroxaban was associated with an excess of 40 Thrombolysis in Myocardial Infarction major bleeding events.

  • When incorporating health state utility values as weights, rivaroxaban therapy showed a utility equivalent of 13.7 and 68.1 fewer deaths per 10,000 patient-years in intent-to-treat and on-treatment analyses, respectively.

  • Monte Carlo simulation indicated probabilities of 64.4% and 98.7% favoring rivaroxaban in terms of benefits outweighing risks.

The analyses from the VOYAGER PAD trial demonstrate a favorable benefit-risk profile of rivaroxaban plus aspirin therapy in patients with symptomatic PAD undergoing lower extremity revascularization procedures. The findings support the use of rivaroxaban as an effective treatment option for reducing thrombotic vascular events in this patient population, with a generally consistent outcome between unweighted and weighted approaches. These results provide valuable insights for clinicians in making informed treatment decisions for PAD patients.

Reference:

Yuan, Z., Levitan, B., Deng, H., Szarek, M., Bauersachs, R. M., Berkowitz, S. D., Haskell, L., Barnathan, E. S., & Bonaca, M. P. (2024). Quantitative benefit–risk evaluation of rivaroxaban in patients after peripheral arterial revascularization: The VOYAGER PAD trial. Journal of the American Heart Association. https://doi.org/10.1161/jaha.123.032782

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Bariatric surgery cuts use of medications for hypertension, diabetes and dyslipidemia, suggests study

Bariatric surgery cuts use of medications for hypertension, diabetes and dyslipidemia, suggests study published in the Surgery for Obesity and Related Diseases.

Limited evidence exists on the patterns of medication use for hypertension, diabetes mellitus (DM), and dyslipidemia after bariatric surgery among Asian patients. A study was done to investigate the patterns in the use of blood pressure-lowering, glucose-lowering, and lipid-lowering medications following Bariatric surgery in Korean patients with morbid obesity. This study is a retrospective cohort study using the Health Insurance Review and Assignment claims database of South Korea (from 2019 to 2021). They included patients who underwent Bariatric surgery between 2019 and 2020 in South Korea. We evaluated the treatment patterns of blood pressure-lowering, glucose-lowering, and lipid-lowering medications at 3-month intervals for 1-year following BS, including medication use, individual medication classes, and the number of medications prescribed. Furthermore, we estimated remission rates for each disorder based on patient characteristics by defining patients who discontinued their medications for at least 2 consecutive quarters as remission. RESULTS: A total of 3810 patients were included in this study. For 1-year following Bariatric surgery, a marked decrease in the number of patients using blood pressure-lowering, glucose-lowering, and lipid-lowering medications was observed. The most remarkable decrease occurred in glucose-lowering medications, which decreased by approximately -75.1% compared with that at baseline. This tendency was consistently observed when analyzing both the number of medications prescribed and the specific medication classes. Regarding remission rates, patients who were female, younger, and received the biliopancreatic diversion-duodenal switch as their Bariatric surgery showed a relatively higher incidence of remission than other groups. Bariatric surgerywas associated with a decrease in the use of medications for hypertension, diabetes mellitus (DM), and dyslipidemia.

Reference:

Jeon, Soo Min, et al. “Discontinuation of Blood Pressure-lowering, Glucose-lowering, and Lipid-lowering Medications After Bariatric Surgery in Patients With Morbid Obesity: a Nationwide Cohort Study in South Korea.” Surgery for Obesity and Related Diseases : Official Journal of the American Society for Bariatric Surgery, 2024.

Keywords:

Bariatric surgery, cuts use, medications, hypertension, diabetes and dyslipidemia,study, Jeon, Soo Mi, Surgery for Obesity and Related Diseases

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New urine test has higher diagnostic accuracy for prostate cancer: JAMA

A new urine test that measures 18 genes associated with prostate cancer provides higher accuracy for detecting clinically significant cancers than PSA and other existing biomarker tests, according to a study published in JAMA Oncology. The urine test, MyProstateScore 2.0 (MPS2), was shown to meaningfully reduce unnecessary prostate biopsies while providing highly accurate detection of worrisome prostate cancers, the researchers concluded.

“In nearly 800 patients with an elevated PSA level, the new test was capable of ruling out the presence of clinically significant prostate cancer with remarkable accuracy. This allows patients to avoid more burdensome and invasive tests, like MRI and prostate biopsy, with great confidence that we are not missing something,” said Jeffrey Tosoian, MD, assistant professor of Urology and director of Translational Cancer Research at Vanderbilt University Medical Center, who is first author of the study.

Prostate cancer is the most common cancer and the second leading cause of cancer death among men in the U.S. The PSA blood test has been widely used as the initial step in prostate cancer screening. Although PSA is elevated in the vast majority of men with prostate cancer, it is also elevated in a significant proportion of men without cancer.

As a result, the use of elevated PSA alone to prompt a prostate biopsy results in numerous unnecessary biopsies. Although generally safe, prostate biopsies are invasive, uncomfortable, and carry some risk of worrisome complications. Therefore, for patients with an elevated PSA, there is a great need for a second-line test to better identify which men truly need a biopsy and which do not.

Because some low-grade, prostate cancers do not require treatment and can be safely monitored with an approach termed active surveillance, the MPS2 test was developed to detect more specifically the higher-grade, “clinically significant” cancers in need of early detection and treatment. To do this, the research team analyzed prostate tumors from across the U.S. to identify novel genes more often detected in the presence of significant cancers. The most informative 18 genes were combined into the MPS2 test, which was then tested in a National Cancer Institute trial of men with an elevated PSA level. Uniquely, the authors were able to compare the novel test to other prostate cancer tests, including the original, two-gene MPS test.

The study involved 743 men with a median age of 62 years and a median PSA level of 5.6. While existing biomarker tests could have avoided 15% to 30% of unnecessary biopsies (i.e. biopsies that were negative or found low-grade cancers not requiring treatment), use of MPS2 would have avoided 35% to 42% of unnecessary biopsies without missing any additional diagnoses of clinically significant cancer. The improvement was even more pronounced in men with a history of a previous negative biopsy, reducing the rate of unnecessary biopsies from 46% to 51% with use of MPS2, as compared to 9% to 21% for existing tests.

Multiparametric magnetic resonance imaging (mpMRI) is another second-line test that has been utilized, but while it can improve detection of clinically significant prostate cancer, interpretation of the results can be subjective and vary significantly. The authors also noted that mpMRI is not available in some community settings and is not an option for some patients. The current study was not designed to compare biomarkers to mpMRI, but the researchers are currently conducting a prospective, multicenter trial for that purpose.

In patients shown to be without clinically significant prostate cancer by the new test, the authors concluded that the “externally validated performance of MPS2 supports its effectiveness in accurately ruling out the need for mpMRI and biopsy altogether.” They noted a limitation of the study was that only 13% of participants were African American. Because prostate cancer is more prevalent among African American men, the research team is currently pursuing further analyses in more racially diverse populations.

Reference:

Tosoian JJ, Zhang Y, Xiao L, et al. Development and Validation of an 18-Gene Urine Test for High-Grade Prostate Cancer. JAMA Oncol. Published online April 18, 2024. doi:10.1001/jamaoncol.2024.0455.

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Scientists discover potential treatment approaches for polycystic kidney disease

Researchers have shown that dangerous cysts, which form over time in polycystic kidney disease (PKD), can be prevented by a single normal copy of a defective gene. This means the potential exists that scientists could one day tailor a gene therapy to treat the disease. They also discovered that a type of drug, known as a glycoside, can sidestep the effects of the defective gene in PKD. The discoveries could set the stage for new therapeutic approaches to treating PKD, which affects millions worldwide. The study, partially funded by the National Institutes of Health (NIH), is published in Cell Stem Cell.

Scientists used gene editing and 3-D human cell models known as organoids to study the genetics of PKD, which is a life-threatening, inherited kidney disorder in which a gene defect causes microscopic tubes in the kidneys to expand like water balloons, forming cysts over decades. The cysts can crowd out healthy tissue, leading to kidney function problems and kidney failure. Most people with PKD are born with one healthy gene copy and one defective gene copy in their cells.

“Human PKD has been so difficult to study because cysts take years and decades to form,” said senior study author Benjamin Freedman, Ph.D., at the University of Washington, Seattle. “This new platform finally gives us a model to study the genetics of the disease and hopefully start to provide answers to the millions affected by this disease.”

To better understand the genetic reasons cysts form in PKD, Freedman and his colleagues sought to determine if 3-D human mini-kidney organoids with one normal gene copy and one defective copy would form cysts. They grew organoids, which can mimic features of an organ’s structure and function, from induced pluripotent stem cells, which can become any kind of cell in the body.

To generate organoids containing clinically relevant mutations, the researchers used a gene editing technique called base editing to create mutations in certain locations on the PKD1 and PKD2 genes in human stem cells. They focused on four types of mutations in these genes that are known to cause PKD by disrupting the production of polycystin protein. Disruptions in two types of the protein – polycystin-1 and polycystin-2 – are associated with the most severe forms of PKD.

They then compared cells with two gene copy mutations in organoids to cells with only one gene copy mutation. In some cases, they also used gene editing to correct mutations in one of the two gene copies to see how this affected cyst formation. They found organoids with two defective gene copies always produced cysts and those that carried one good gene copy and one bad copy did not form cysts.

“We didn’t know if having a gene mutation in only one gene copy is enough to cause PKD, or if a second factor, such as another mutation or acute kidney injury was necessary,” Freedman said. “It’s unclear what such a trigger would look like, and until now, we haven’t had a good experimental model for human PKD.”

According to Freedman, the cells with one healthy gene copy make only half the normal amount of polycystin-1 or polycystin-2, but that was sufficient to prevent cysts from developing. He added that the results suggest the need for a second trigger and that preventing that second hit might be able to prevent the disease.

The organoid models also provided the first opportunity to study the effectiveness of a class of drugs known as eukaryotic ribosomal selective glycoside on PKD cyst formation.

“These compounds will only work on single base pair mutations, which are commonly seen in PKD patients,” explained Freedman. “They wouldn’t be expected to work on any mouse models and didn’t work in our previous organoid models of PKD. We needed to create that type of mutation in an experimental model to test the drugs.”

Freedman’s team found that the drugs could restore the ability of genes to make polycystin, increasing the levels of polycystin-1 to 50% and preventing cysts from forming. Even after cysts had formed, adding the drugs slowed their growth.

Freedman suggested that a next step would be to test existing glycoside drugs in patients. Researchers also could explore the use of gene therapy as a treatment for PKD.

Reference:

 Courtney E. Vishy, Chardai Thomas, Thomas Vincent, Daniel K. Crawford, Matthew M. Goddeeris, Benjamin S. Freedman, Genetics of cystogenesis in base-edited human organoids reveal therapeutic strategies for polycystic kidney disease, Cell Stem Cell, DOI:https://doi.org/10.1016/j.stem.2024.03.005.

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Immediate impression method in digital workflow as good as staged impression method for single-unit implants in posterior area: Study

Immediate impression method in the digital workflow as good as the staged impression method for single-unit implants in the posterior area suggests a new study published in the Journal of Prosthodontics.

This clinical study compares immediate and staged impression methods in a complete digital workflow for single-unit implants in the posterior area. Sixty patients requiring single-unit implant crowns were enrolled. Forty patients were assigned to the test group, immediate digital impression after implant surgery with crown delivery 4 months later. The remaining 20 patients were assigned to the control group, staged digital impressions 4 months after implant surgery, and crown delivery 1 month later. Both workflows involved free-model CAD-CAM crown fabrications. The crowns were scanned before and after clinical adjustment using an intraoral scanner (TRIOS Color; 3Shape). Two 3D digital models were trimmed and superimposed to evaluate the dimensional changes using Geomagic Control software. Chairside times for the entire workflow were recorded. Kruskal–Wallis was performed to compare crown adjustments between two groups, while one-way ANOVA was used to compare chairside time durations between the test and control groups. Results: All crowns were delivered without refabrication. The average maximum occlusion adjustment of crowns was−353.2±207.1μm in the test group and−212.7±150.5μm in the control group (p=0.02). The average area of occlusal adjustment, measured as an area of deviation larger than 100μm, was 14.8±15.3 and8.4±8.1 mm2in the test and control groups, respectively (p=0.056). There were no significant differences in the mesial and distal contact adjustment amounts, or the maximum deviations of the proximal area, between the two groups. The mean chair-side time was 50.25±13.48 and 51.20±5.34 min in the test and control groups, respectively (p=0.763). The immediate impression method in the digital workflow for single-unit implants required more occlusal adjustments of crowns but showed similar chairside-times compared to the staged impression method.

Reference:

Ren S, Jiang X, Lin Y, Di P.Crown adjustment and chairside efficiency ofsingle-unit restorations fabricated from immediate andstaged impressions using a digital workflow forposterior implants. J Prosthodont. 2024;1–8.https://doi.org/10.1111/jopr.13851

Keywords:

Immediate, impression method, digital workflow, good, staged impression, method, single-unit, implants, posterior area, study, Scrown accuracy, digital workflow, immediate digital impression

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