S J Pelletier

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This study looked at patients with a liver condition linked to obesity called metabolic dysfunction-associated steatohepatitis (MASH) and compared their outcomes after receiving liver transplants from living donors versus deceased donors. The findings showed that living donor recipients had better overall survival rates (94% at one year compared to 91% for deceased donor recipients) and fewer were on dialysis before the transplant (1.2% versus 12.9%). These results are important because they indicate that living donor liver transplants may provide better health outcomes for patients with MASH, allowing them to receive transplants before their condition worsens. Who this helps: Patients with metabolic dysfunction-associated steatohepatitis.

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This study looked at how combining weight loss treatments and surgeries can help patients with obesity who need organ transplants. It found that these interventions can lower risks associated with transplants, making it possible for more patients to qualify for the procedure. This matters because it opens up life-saving transplant options for individuals who are typically turned down due to their weight. Who this helps: Patients who are obese and need organ transplants.

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This study focused on improving a technique called Liquid Chromatography Mass Spectrometry (LC-MS), which analyzes complex biological samples. The researchers developed a system called Batch Effect Removal Neural Networks (BERNN) to correct problems that arise from different processing methods, showing that this new approach outperformed others by providing clearer and more accurate classifications of samples. They found that while BERNN improved classification of sample conditions, too much correction could erase important biological information. Who this helps: This benefits researchers and scientists working in biology and pharmaceuticals.

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The study looked at liver transplants in the U.S. before and after a policy change by the United Network for Organ Sharing in February 2020, aiming to improve access to transplants. After the change, the number of liver transplants dropped by 6%, with a 54% decrease in local donations, while imported donations surged by 133%. Costs also increased significantly, with overall hospital expenses rising by nearly 11%, and specific costs for imported livers jumping by 122%, highlighting that the new policy may worsen existing inequalities in healthcare access for marginalized communities.

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Livers stored on ice before transplant suffer ischemia damage that worsens outcomes. This randomized trial tested a portable device that keeps the liver oxygenated and perfused during transport, compared to standard cold storage. The results support that hypothermic oxygenated machine perfusion reduces injury and could become a new standard for liver preservation in the U.S.

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This study looked at how a new method of preserving donated livers, called portable normothermic machine perfusion (using the OCS Liver), affects the success of liver transplants. The results showed that this method significantly reduced early transplant complications, with only 18% of patients experiencing early allograft dysfunction (EAD) compared to 31% in those using traditional cold storage. It also led to fewer bile problems after six and twelve months and allowed more livers from donors who died from cardiac issues to be used. Who this helps: This benefits patients awaiting liver transplants, especially those needing organs from less commonly used donors.

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This study looked at attitudes towards PrEP, a medication that helps prevent HIV, among men who have sex with men in Côte d'Ivoire. It found that 35.3% of the 201 participants would likely use PrEP if it became available, with factors like condom use and free access increasing acceptance. Understanding these attitudes is important for effectively rolling out PrEP and ensuring those at risk can benefit from it. Who this helps: This helps men who have sex with men who are at risk of HIV.

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This study looked at how starting a liver transplant with blood flow from the hepatic artery, instead of the portal vein, affects patient outcomes. Researchers analyzed data from 204 liver transplant patients and found that those who received blood from the hepatic artery had lower blood transfusion needs during surgery (11.9 units compared to 15.5 units). However, this method did not significantly change other outcomes like risk of rejection or survival rates. Who this helps: This benefits patients undergoing liver transplants by potentially making the surgery safer and more efficient.

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This study looked at a program called "Lose Weight to Donate," which was designed to help people with obesity and fatty liver disease lose weight so they could become eligible to donate their livers. Over 19 months, seven people joined the program, and two were able to successfully donate their livers after following a monitored diet and exercise plan, while a third was approved but could not donate because the recipient received a transplant sooner. The program shows that it's possible to help more people qualify as living liver donors, which is important as the need for liver transplants continues to grow. Who this helps: This helps potential liver donors and patients waiting for liver transplants.

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This study looked at kidney transplants in morbidly obese patients (those with a BMI over 35) to see if a newer robotic surgery method (robot-assisted kidney transplant) is safer than traditional open surgery. Researchers found that the robotic method led to fewer infections during recovery, with both methods showing similar kidney function and survival rates one year later. This matters because it means that morbidly obese patients, who often struggle to get kidney transplants, now have a safer surgical option available to them. Who this helps: Patients with end-stage renal disease who are morbidly obese.

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This study looked at how the condition of donor livers, specifically those with high fat content (over 30%), affects survival rates after liver transplants, especially in obese patients with a body mass index (BMI) over 35. The researchers found that both the fat content of the donor liver and the obesity of the recipient significantly increase the risk of death after transplantation, with obese recipients facing a mortality risk that was nearly equal to that of receiving a high-fat liver. Specifically, the risk of death within 30 days was more than twice as high for those receiving high-steatosis livers. Who this helps: This research benefits patients needing liver transplants, particularly those who are obese.

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This study looked at how tightly controlling blood sugar levels during liver transplants affects patients' survival and health outcomes. Researchers divided 100 patients into two groups: one had strict blood sugar control aimed at keeping levels between 80-120 mg/dL, while the other group had conventional control with targets of 180-200 mg/dL. The results showed that there was no significant difference in survival rates after one, three, or five years between the two groups, indicating that the level of blood sugar control during surgery didn't impact overall patient or graft survival. Who this helps: Patients undergoing liver transplants and their doctors.

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This study looked at two serious complications that can occur after liver transplantation: takotsubo syndrome, which affects the heart and happens in about 1.4% of liver transplant patients, and hepatic artery thrombosis, which affects 2-4%. In a case involving a 66-year-old man, both conditions developed shortly after his surgery, leading to significant heart problems and a blockage in the liver's blood supply. The researchers stressed the importance of recognizing these overlapping conditions in patients, as one may trigger the other. Who this helps: This information benefits doctors and healthcare providers caring for liver transplant patients.

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This study examined liver transplantation in the U.S. from 2002 to 2015 to see how new organ-sharing policies (Share35) affected waiting-list mortality rates and regional disparities. Although the overall death rate on the waiting list decreased from 12.2% to 8.1%, geographic differences in mortality remained significant, with certain regions showing much higher risks — some up to 79% more likely to die before getting a transplant. This matters because it highlights ongoing inequalities in access to liver transplants, despite efforts to improve sharing. Who this helps: This helps patients on liver transplant waiting lists.

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This research looked at liver transplant candidates with a condition called non-alcoholic steatohepatitis (NASH) to see if those at high risk were more likely to develop blood clots in a major vein before their transplant. Out of over 35,000 liver transplants studied, 465 were high-risk candidates, and 66 (about 14.2%) of them had these clots, compared to 328 (11.8%) of the lower-risk candidates. This is important because it shows that high-risk NASH patients are more vulnerable to complications, suggesting they may need specific treatments to reduce their risk of blood clots before undergoing surgery. Who this helps: This helps patients with high-risk NASH and their doctors.

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This paper looks at different efforts to improve access to organs for transplant. The American Society of Transplant Surgeons organized a group to collect and review various initiatives related to how organs are distributed, and they found a wide variety of activities but highlighted the need for better organization and communication between involved parties. This matters because enhancing organ access can help more patients receive lifesaving transplants. Who this helps: Patients in need of organ transplants.

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This study looked at liver transplant patients to see if having a blockage in the portal vein before surgery affects their chances of complications afterward. Among 63,182 liver transplant recipients, those with blockage before surgery had a significantly higher rate of a serious complication called hepatic artery thrombosis, with 13.8% of these patients affected, compared to 7.5% of those without blockage. Understanding this link is important because it can lead to better treatment plans for patients with portal vein thrombosis, reducing the risk of complications after transplant. Who this helps: This helps patients with liver disease who are awaiting transplant.

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This study looked at liver transplant recipients who had a condition called portal vein thrombosis (PVT) and received organs from high-risk donors (HRD). The researchers found that 66% of patients who developed a serious complication called hepatic artery thrombosis (HAT) after their transplant had organs from high-risk donors, making patients with PVT receiving these organs over three times more likely to experience HAT. This matters because it highlights the need for careful donor selection and possibly using blood thinners during and after surgery to help prevent complications for these vulnerable patients. Who this helps: This helps liver transplant patients with portal vein thrombosis and their doctors.

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This study looked at how the liver transplant waiting list affects patients with special exceptions, such as those with liver cancer. It found that 27.29% of candidates had exceptions, and these patients waited about 237 days for a transplant compared to 426 days for those without exceptions. Additionally, the transplant rates were much higher for those with exceptions (79.05%) versus those without (40.60%), and the death rate for exception candidates was only 4.49% compared to 24.63% for others. Who this helps: Patients on the liver transplant waiting list, especially those with liver cancer.

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The study looked at the risk of a blood clot in the portal vein (portal vein thrombosis, or PVT) in patients with liver disease caused by nonalcoholic steatohepatitis (NASH). Out of over 33,000 liver transplant patients, 6.3% had PVT, and among those, 12% had NASH. This means that patients with NASH cirrhosis had a higher likelihood of developing PVT compared to those with other types of cirrhosis, with a significant increase from 6.0% to 10.1%. Understanding this link is important because it highlights the need for better prevention and treatment strategies for patients with NASH. Who this helps: Patients with nonalcoholic steatohepatitis and their doctors.

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This paper outlines guidelines for managing potential organ donors in intensive care units (ICUs). A team of experts from various medical organizations evaluated existing research and created recommendations on topics like determining brain death, managing the donation process, and handling specific organs, even though most of the evidence they found was not based on high-quality studies. This matters because having clear guidelines can help healthcare providers better manage potential organ donors, ultimately leading to more successful organ transplants and saving more lives. Who this helps: This benefits patients needing organ transplants and their families.

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This study looked at a treatment method called photodynamic therapy (PDT) for patients with a serious form of bile duct cancer known as cholangiocarcinoma (CCA) who are waiting for a liver transplant. The researchers found that all four patients treated with PDT successfully managed to keep their cancer from growing locally, allowing all of them to eventually receive their liver transplants. After about 28 months, 75% of these patients were still cancer-free. Who this helps: This benefits patients with cholangiocarcinoma who are awaiting liver transplants.

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This study looked at how using a special machine called extracorporeal support (ECS) can improve the donation of organs from patients who are declared dead after their heart stops beating. Over nearly 13 years, they found that, on average, each donor provided about 2.6 organs, with 1.7 of those organs being successfully transplanted. The research shows that using ECS can help increase the number of organs available for transplant and reduce problems after the transplant, making it an important advancement for organ donation. Who this helps: This helps patients waiting for organ transplants.

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This research paper studied how transcranial direct current stimulation (tDCS), a noninvasive treatment method, affects the brain at the cellular and molecular levels. The findings indicated that tDCS influences important processes related to inflammation and brain repair, showing potential benefits for treating mental health and neurological disorders. Understanding these effects is essential for effectively using tDCS in larger clinical settings, which could lead to more patients receiving this therapy. Who this helps: This helps patients with psychiatric and neurological conditions.

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This study looked at how low-intensity electric fields affect brain cells, specifically neurons, microglia, and astrocytes, in a lab setting. Researchers found that when exposed to these electric fields, neurons stretched and grew new fibers, while microglia changed shape and showed increased activity depending on their prior state. These results can help us understand how electric field treatments might benefit conditions like brain disorders by promoting cellular growth and repair. Who this helps: Patients with brain disorders seeking new treatment options.

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This study looked at whether avoiding steroids after a liver transplant is better than the standard treatment, which includes steroids. Out of 100 patients, those who completely avoided steroids had lower survival rates over five years—60% of them were still alive compared to 72% of those who received steroids. This is important because it suggests that not using steroids might be harmful for liver transplant patients, indicating that they should have at least a short course of steroids after surgery. Who this helps: This helps liver transplant patients and their doctors.

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This study looked at patients with liver cancer who received a liver transplant from deceased donors between 2002 and 2008. Out of 94 patients, 18% had their cancer return within about two years after the transplant, with the likelihood of recurrence increasing if patients had more cancerous lesions or larger tumors at the time of the transplant, and if the liver donors were older. Understanding these risk factors is important because it can help doctors better select patients for transplant and create follow-up care plans to monitor for cancer recurrence. Who this helps: This helps patients with liver cancer and their doctors by improving transplant selection and post-surgery care.

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This study looked at how patients waiting for a liver transplant view the quality of donor organs and how they make decisions regarding high-risk organs. The researchers found that a majority, 58% of the 95 patients surveyed, would only accept organs if the risk of transplant failure was 25% or less over three years, but many were more willing to consider high-risk organs when shown their risks compared to average organs. This is important because it highlights that patients want to be involved in these decisions and that their acceptance of higher-risk organs can increase with clearer information about organ availability. Who this helps: This helps patients waiting for liver transplants.

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This study examined whether transplant patients who received heart, lung, or liver transplants should also get special medications to suppress their immune system when they undergo kidney transplants. The findings showed that 47% of those who received these medications had severe post-surgery infections, compared to 29% who did not. Additionally, one year after the kidney transplant, 81% of the induction group still had functioning kidneys, while 95% in the non-induction group did, suggesting that those on induction may be at greater risk of complications. Who this helps: This research helps doctors determine the best treatment plans for patients receiving multiple organ transplants.

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This study looked at the impact of a blood clot in the portal vein, known as portal vein thrombosis (PVT), on the survival of patients with liver cirrhosis. Out of nearly 3,300 patients analyzed, 148 had PVT, and this condition was found to significantly increase the risk of death during and after liver transplant evaluations. Specifically, those with PVT had more than double the risk of dying compared to those without it. Who this helps: This research benefits patients with cirrhosis and their doctors by highlighting the importance of monitoring and managing portal vein thrombosis.

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This study looked at liver transplants in the U.S. from 1999 to 2008, highlighting key changes due to new policies in 2002. It found that while the number of adult patients on the waiting list dropped, more people received liver-kidney transplants, and there were improvements in survival rates after one year despite higher risks among donors and recipients. The research also noted significant differences in waiting times and post-transplant survival across different regions, emphasizing ongoing challenges in liver transplantation. Who this helps: This information benefits patients in need of liver transplants and healthcare providers managing their care.

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This study looked at how effective certain features on MRI scans are in diagnosing small liver cancers, specifically hepatocellular carcinoma (HCC), in patients with liver cirrhosis. Researchers found that certain MRI characteristics, like delayed hypointensity and a delayed enhancing rim around nodules, helped distinguish cancerous nodules from non-cancerous ones. For instance, the delayed enhancing rim had a sensitivity of 64% and a specificity of 86% for nodules less than or equal to 5 cm, meaning it was good at correctly identifying cases of cancer and avoiding false positives. Who this helps: This research benefits patients with cirrhosis who are at risk for liver cancer and helps doctors improve their diagnosis methods.

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This study looked at how effective a treatment called nucleoside monotherapy is in preventing hepatitis B virus (HBV) infection in patients receiving liver transplants from certain types of donors. Out of 18 patients treated with this method, none developed HBV infection after an average of 32 months of follow-up. This is important because it shows that nucleoside monotherapy can effectively protect HBsAg-negative patients from HBV, which is crucial since these patients are at high risk of infection. Who this helps: This benefits patients undergoing liver transplants from anti-HBc-positive donors.

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This study looked at the outcomes of liver transplants for patients with liver cancer (hepatocellular carcinoma) using data from a national organ registry. The researchers found that out of 4,482 patients listed for a liver transplant, 65% received one, and the survival rates after one and five years were 81% and 51%, respectively. Patients with smaller tumors meeting specific guidelines had significantly better survival rates (89% and 61%) compared to those with larger tumors (70% and 32%), which shows that following these criteria improves outcomes for patients. Who this helps: This research benefits patients with liver cancer and their doctors by providing clearer survival expectations based on transplant eligibility criteria.

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This study examined the costs related to complications that patients face after receiving a liver transplant. Researchers reviewed the medical records of 214 adult patients and found that complications significantly increase costs. For example, each point increase in a patient's disease severity (measured by the MELD score) added nearly $3,400 in hospital costs, and pneumonia alone raised costs by over $83,700. Understanding these costs helps highlight the financial burdens faced by insurance companies and medical centers after liver transplants. Who this helps: This benefits patients, medical centers, and insurers by shedding light on the financial impact of post-transplant complications.

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The study looked at biliary problems that can occur after liver transplants, focusing on factors related to the donor, the recipient, and the surgical techniques used. They found that 18% of patients experienced bile leaks and 23% had strictures, with older donor age and increased warm ischemia being linked to higher rates of leaks. The use of specific preservation solutions and stents during surgery were found to help reduce these complications. Who this helps: This research benefits doctors and patients undergoing liver transplants by identifying factors that can improve surgical outcomes.

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This study looked at two different solutions used to preserve kidneys during transplants: histidine-tryptophan-ketoglutarate (HTK) and University of Wisconsin (UW) solution. Researchers analyzed data from over 790 kidney transplants and found that both solutions had similar success rates for patient and kidney survival, but kidneys from deceased donors using HTK showed a higher chance of delayed function. However, using HTK also correlated with a reduced risk of delayed function when looking at living donor kidneys, and overall, HTK was just as good as UW for preserving kidneys. Who this helps: Patients receiving kidney transplants benefit from these findings.

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This study looked at how the practices of kidney donors and recipients affect the financial health of transplant centers. Researchers found that using kidneys from older or less healthy donors led to a financial loss of about $5,887 per transplant, and patients who experienced delayed graft function (when a transplanted kidney takes longer to start working) caused a loss of about $4,937. Each year, the center's financial situation worsened by approximately $5,278 due to rising costs and decreasing payments from Medicare, which could impact efforts to increase kidney transplants in the U.S. Who this helps: This research benefits patients waiting for kidney transplants and medical centers involved in organ transplantation.

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This study looked at the costs associated with surgical complications that occur in children who receive liver transplants. The researchers found that complications like acute renal failure (ARF) and hepatic artery thrombosis (HAT) significantly increased hospital costs by an average of $238,990 and $125,650, respectively. This is important because it highlights how these complications not only affect children's health but also lead to much higher expenses for everyone involved, stressing the need for improvements in surgical care. Who this helps: Patients and their families, doctors, and healthcare providers.

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This study examined how certain treatments affect the survival of kidney transplant patients who have hepatitis C. It included 3,708 patients with hepatitis C and found that those who received specific immunosuppressive treatments, like induction therapy and mycophenolate mofetil, had better survival rates. Specifically, using induction therapy reduced the risk of death by 25% and mycophenolate mofetil also lowered the risk by 23%. This is important because it helps identify effective treatment strategies that can improve the lives of kidney transplant patients living with hepatitis C. Who this helps: Patients with kidney transplants and hepatitis C.

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This study looked at how a system for prioritizing liver transplants called the MELD score affected the quality of the organs used and the survival rates of patients after surgery. Researchers analyzed data from nearly 48,000 liver transplants and found that since MELD was implemented, the quality of transplanted livers has declined, leading to a 4% increased risk of organ failure. Additionally, higher-risk organs are now being given to less urgent patients, which has worsened their chances of survival after transplantation. Who this helps: This research is important for patients needing liver transplants, especially those with lower urgency levels, as it highlights the risks associated with current organ allocation practices.

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This study looked at what happens to young patients after they receive a kidney transplant, focusing on urinary problems that can arise. Out of 147 children studied, 9 (6.1%) had complications related to their urinary system, with 7 (4.8%) needing additional surgery for a condition called vesicoureteral reflux. These complications not only led to significantly higher hospital bills—three times more for those affected—but did not change the overall success rate of the kidney transplant. Who this helps: This research helps doctors and healthcare providers better understand the risks and costs associated with kidney transplants in children.

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This study looked at the financial costs associated with complications following pancreas transplants by analyzing records from 49 patients at the University of Michigan Health System. It found that complications raised the average cost for the hospital from about $92,917 to $108,431, leading to an additional $15,514 in expenses, while insurers paid out about $17,363 more for patients with complications. Improving surgical quality can benefit everyone involved, including patients and healthcare providers, as it can lower costs and improve outcomes. Who this helps: Patients and healthcare providers.

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This study looked at urinary complications that can occur after kidney transplants by analyzing data from 1,698 patients. Researchers found that 6.2% of these patients experienced urinary problems, with 2.8% developing a ureteral stricture, 1.7% having leaks and strictures, and 1.6% facing urine leaks. Key risk factors for these complications included being male, being African American, and using a specific surgical stitching technique, which the study suggests should be avoided for ureteral connections. Who this helps: This information benefits kidney transplant patients and surgeons by helping them identify and manage risks of urinary complications more effectively.

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This study looked at how controlling blood sugar levels during liver transplant surgery affects patients' outcomes. Researchers found that patients with well-managed blood sugar levels (average of 135 mg/dL) had a lower rate of infections within 30 days after surgery (30%) compared to those with high sugar levels (48%). Additionally, those with poor control faced a higher risk of dying within a year after the transplant (21.9% compared to 8.8%). Who this helps: This benefits liver transplant patients and their doctors, as it highlights the importance of managing blood sugar during surgery.

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This study examined how surgical outcomes differ between early summer and late spring, focusing on complications and deaths within 30 days after surgery. Researchers found that patients operated on during early summer had an 18% higher chance of complications and a 41% increased risk of death compared to those treated in late spring. Understanding these seasonal variations is important for improving patient care and outcomes in surgical settings. Who this helps: This helps patients undergoing surgery, as well as doctors aiming to provide better care.

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This study examined whether routinely placing ureteral stents during kidney transplants is worth the cost, especially given the complications some patients face afterward. The researchers found that patients with urinary complications after a transplant had extra hospital costs averaging $20,121, while placing a stent is much cheaper—enough to insert about 22 stents for the price of treating one complication. This matters because using stents may prevent serious issues and save money in the long run. Who this helps: This helps kidney transplant patients and their doctors.

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This study looked at how a patient's body weight, measured by body mass index (BMI), affects their chances of surviving after a liver transplant. Researchers found that both very thin and morbidly obese patients benefitted from getting a transplant, showing significant survival advantages over waiting for a liver while on the transplant list—this was true for all BMI categories. Specifically, underweight patients had a 61% higher risk of dying while waiting for a transplant, but after receiving a transplant, their risk of dying was similar to those of normal weight. Who this helps: This research benefits patients with varying body weights who need a liver transplant by demonstrating that they can still have positive outcomes.

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This study examined the financial impact of biliary complications in liver transplant patients at the University of Michigan Health System. Researchers found that the hospital made an average profit of $6,822 on patients without biliary complications but suffered an average loss of $5,742 for those with such complications. These results highlight that improving surgical quality can not only benefit patients but also save money for healthcare providers, especially since insurance reimbursement is higher for patients with complications. Who this helps: Patients and hospitals.