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Thabut D, Bouzbib C, Meunier L, Haas M, Weiss N, Louvet A, Imbert-Bismut F, Mochel F, Nadjar Y, Santiago A, Thevenot T, Duhalde V, Oberti F, Francoz C, Coilly A, Hilleret MN, Lebray P, Liou-Schischmanoff A, Barbier L, Duvoux C, Pageaux GP, Bismuth M, Galanaud D, Broucker TD, Cadranel JF, Leroy V, Di Martino V, Larrey D, Camus C, Scatton O, De Ledinghen V, Mallat A, Rudler M, Bureau C. Diagnosis and management of hepatic encephalopathy: The French recommendations. Liver Int 2023; 43:750-762. [PMID: 36625084 DOI: 10.1111/liv.15510] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 11/27/2022] [Accepted: 12/31/2022] [Indexed: 01/11/2023]
Abstract
Hepatic encephalopathy (HE) is a frequent and severe complication of liver disease with poor patient outcomes. However, it is a poorly understood complication, with no consensus for diagnosis. Therefore, HE is often underdiagnosed. Differential diagnosis may be cumbersome because of non-specific symptoms, such as confusion, cognitive disorders, the aetiological factors of cirrhosis and comorbidities, which are often observed in cirrhotic patients. Therefore, an overt or covert form of HE should be systematically investigated. Advice is provided to drive patient work-up. Effective treatments are available to prevent or treat HE bouts, but the issue of single or combination therapy has not been resolved. Transjugular intrahepatic portosystemic shunt (TIPS) placement largely improved the prognosis of cirrhotic patients, but HE occurrence of HE is often a fear, even when post-TIPS HE can be avoided by a careful selection of patients and preventive treatment. HE is an indication of liver transplantation. However, its reversibility post-transplantation and the consequences of transplantation in patients with other causes of neurological disorders remain controversial, which supports the performance of an extensive work-up in expert centres for this subset of patients. The present guidelines assist clinicians in the diagnosis of the overt or covert form of HE to implement curative and preventive treatments and clarify which patients require referral to expert centres for consideration for liver transplantation. These guidelines are very clinically oriented and address different frequent clinical issues to help physicians make bedside decisions.
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Affiliation(s)
- Dominique Thabut
- APHP-Sorbonne Université, Service d'hépato-gastroentérologie, Hôpital Pitié-Salpêtrière. INSERM, Centre de Recherche Saint-Antoine (CRSA), Institute of Cardiometabolism and Nutrition (ICAN). Brain-Liver Pitié-Salpêtrière Study Group (BLIPS), Paris, France
| | - Charlotte Bouzbib
- APHP-Sorbonne Université, Service d'hépato-gastroentérologie, Hôpital Pitié-Salpêtrière. INSERM, Centre de Recherche Saint-Antoine (CRSA), Institute of Cardiometabolism and Nutrition (ICAN). Brain-Liver Pitié-Salpêtrière Study Group (BLIPS), Paris, France
| | - Lucy Meunier
- Service d'hépato-gastroentérologie A et Transplantation, Hôpital Saint-Eloi, CHU de Montpellier, Montpellier, France
| | - Manon Haas
- APHP-Paris Saclay, Centre Hépato-Biliaire, Hôpital Paul Brousse, Université Paris-saclay, Villejuif, France
| | - Nicolas Weiss
- APHP-Sorbonne Université, Service de réanimation neurologique, Hôpital Pitié-Salpêtrière. INSERM, Centre de Recherche Saint-Antoine (CRSA), Institute of Cardiometabolism and Nutrition (ICAN). Brain-Liver Pitié-Salpêtrière Study Group (BLIPS), Paris, France
| | - Alexandre Louvet
- Services des maladies de l'appareil digestif, CHRU de Lille, Lille, France
| | - Francois Imbert-Bismut
- APHP-Sorbonne Université, Service de biochimie, Hôpital Pitié-Salpêtrière, Paris, France
| | - Fanny Mochel
- APHP-Sorbonne Université, Service de génétique, Hôpital Pitié-Salpêtrière, Paris, France
| | - Yann Nadjar
- APHP-Sorbonne Université, Service de neurologie, Hôpital Pitié-Salpêtrière, Paris, France
| | - Antoine Santiago
- APHP-Sorbonne Université, Service d'hépato-gastroentérologie, Hôpital Pitié-Salpêtrière. INSERM, Centre de Recherche Saint-Antoine (CRSA), Institute of Cardiometabolism and Nutrition (ICAN). Brain-Liver Pitié-Salpêtrière Study Group (BLIPS), Paris, France
| | - Thierry Thevenot
- Service d'hépatologie, Hôpital Jean Minjoz, CHU de Besançon, Besançon, France
| | - Véronique Duhalde
- Service de pharmacie, Hôpital Rangueil, CHU de Toulouse, Toulouse, France
| | - Frédéric Oberti
- Laboratoire HIFIH, UPRES-EA2170, Faculté de Médecine, Service d'hépato-gastroentérologie, CHU ANGERS, Angers, France
| | - Claire Francoz
- APHP-Hôpital Beaujon, Service d'hépatologie, Clichy, France
| | - Audrey Coilly
- APHP-Paris Saclay, Centre Hépato-Biliaire, Hôpital Paul Brousse, Université Paris-saclay, Villejuif, France
| | | | - Pascal Lebray
- APHP-Sorbonne Université, Service d'hépato-gastroentérologie, Hôpital Pitié-Salpêtrière. INSERM, Centre de Recherche Saint-Antoine (CRSA), Institute of Cardiometabolism and Nutrition (ICAN). Brain-Liver Pitié-Salpêtrière Study Group (BLIPS), Paris, France
| | | | - Louise Barbier
- Service de chirurgie hépatique et transplantation, CHU de Tours, Tours, France
| | | | - Georges-Philippe Pageaux
- Service d'hépato-gastroentérologie A et Transplantation, Hôpital Saint-Eloi, CHU de Montpellier, Montpellier, France
| | - Michael Bismuth
- Service d'hépato-gastroentérologie B, Hôpital Saint Eloi, CHU de Montpellier, Montpellier, France
| | - Damien Galanaud
- APHP-Sorbonne Université, Service de neuro-radiologie, Hôpital Pitié-Salpêtrière, Paris, France
| | - Thomas De Broucker
- Service de Neurologie Hôpital Pierre Delafontaine, Centre Hospitalier de Saint-Denis, Saint-Denis, France
| | - Jean-François Cadranel
- Service d'hépato-gastroentérologie de nutrition et d'Alcoologie-GHPSO site de Creil, Creil, France
| | - Vincent Leroy
- APHP Hôpital Henri-Mondor, Service d'hépatologie, Créteil, France
| | - Vincent Di Martino
- Service d'hépatologie, Hôpital Jean Minjoz, CHU de Besançon, Besançon, France
| | - Dominique Larrey
- Service d'hépato-gastroentérologie A et Transplantation, Hôpital Saint-Eloi, CHU de Montpellier, Montpellier, France
| | - Christophe Camus
- Service de réanimation Médicale, Hôpital Pontchaillou, CHU de Rennes, Rennes, France
| | - Olivier Scatton
- APHP-Sorbonne Université, Service de chirurgie et transplantation hépatique, Hôpital Pitié-Salpêtrière, Paris, France
| | - Victor De Ledinghen
- Service d'hépato-gastroentérologie, Hôpital du Haut-Lévêque, CHU de Bordeaux, Bordeaux, France
| | - Ariane Mallat
- APHP Hôpital Henri-Mondor, Service d'hépatologie, Créteil, France
| | - Marika Rudler
- APHP-Sorbonne Université, Service d'hépato-gastroentérologie, Hôpital Pitié-Salpêtrière. INSERM, Centre de Recherche Saint-Antoine (CRSA), Institute of Cardiometabolism and Nutrition (ICAN). Brain-Liver Pitié-Salpêtrière Study Group (BLIPS), Paris, France
| | - Christophe Bureau
- Service d'hépatologie, Hôpital Rangueil, CHU de Toulouse, Toulouse, France
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The Management of Postoperative Cognitive Dysfunction in Cirrhotic Patients: An Overview of the Literature. Medicina (B Aires) 2023; 59:medicina59030465. [PMID: 36984466 PMCID: PMC10053389 DOI: 10.3390/medicina59030465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 02/23/2023] [Accepted: 02/24/2023] [Indexed: 03/03/2023] Open
Abstract
Background and objectives: Postoperative cognitive dysfunction (POCD) represents a decreased cognitive performance in patients undergoing general anesthesia for major surgery. Since liver cirrhosis is associated with high mortality and morbidity rates, cirrhotic patients also assemble many risk factors for POCD. Therefore, preserving cognition after major surgery is a priority, especially in this group of patients. The purpose of this review is to summarize the current knowledge regarding the effectiveness of perioperative therapeutic strategies in terms of cognitive dysfunction reduction. Data Collection: Using medical search engines such as PubMed, Google Scholar, and Cochrane library, we analyzed articles on topics such as: POCD, perioperative management in patients with cirrhosis, hepatic encephalopathy, general anesthesia in patients with liver cirrhosis, depth of anesthesia, virtual reality in perioperative settings. We included 115 relevant original articles, reviews and meta-analyses, and other article types such as case reports, guidelines, editorials, and medical books. Results: According to the reviewed literature, the predictive capacity of the common clinical tools used to quantify cognitive dysfunction in cirrhotic settings is reduced in perioperative settings; however, novel neuropsychological tools could manage to better identify the subclinical forms of perioperative cognitive impairments in cirrhotic patients. Moreover, patients with preoperative hepatic encephalopathy could benefit from specific preventive strategies aimed to reduce the risk of further neurocognitive deterioration. Intraoperatively, the adequate monitoring of the anesthesia depth, appropriate anesthetics use, and an opioid-sparing technique have shown favorable results in terms of POCD. Early recovery after surgery (ERAS) protocols should be implemented in the postoperative setting. Other pharmacological strategies provided conflicting results in reducing POCD in cirrhotic patients. Conclusions: The perioperative management of the cognitive function of cirrhotic patients is challenging for anesthesia providers, with specific and targeted therapies for POCD still sparse. Therefore, the implementation of preventive strategies appears to remain the optimal attitude. Further research is needed for a better understanding of POCD, especially in cirrhotic patients.
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Shahgond L, Patel C, Thakur K, Sarkar D, Acharya S, Patel P. Therapeutic potential of probiotics - Lactobacillus plantarum UBLP40 and Bacillus clausii UBBC07 on thioacetamide-induced acute hepatic encephalopathy in rats. Metab Brain Dis 2022; 37:185-195. [PMID: 34731397 DOI: 10.1007/s11011-021-00862-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 10/23/2021] [Indexed: 01/18/2023]
Abstract
PURPOSE Hepatic encephalopathy (HE) or hepatic coma is a demanding, not utterly understood complication of acute and chronic liver dysfunction and portosystemic shunting. In HE, hyperammonemia and inflammatory responses are believed to act in synergism. Probiotics, Lactobacillus plantarum UBLP40 and Bacillus clausii UBBC07 reduce small intestinal bacterial overgrowth and hyperammonemia, thereby preventing HE development. METHODS The effect of probiotics-Lactobacillus plantarum UBLP40 (107 CFU/day, 14 days) and Bacillus clausii UBBC07 (107 CFU/day, 14 days) combination and standard drug-lactulose (2.5 ml/kg in 3 divided doses, 14 days) was studied in thioacetamide (250 mg/kg for three days) induced acute HE in rats by measuring behavioural parameters, biochemical parameters (serum AST, ALT, ALP and ammonia level), neurochemical parameters and histopathology study in brain and liver. RESULTS In contrast to only thioacetamide treated rats, probiotics treatment substantially (p < 0.001) reduced liver function parameters, i.e. serum AST, ALT, ALP, and ammonia, improved behaviour parameters, i.e. decreased motor disruption, improved memory impairment. Probiotics treated rats have also shown a substantial improvement in oxidative stress parameters i.e. reduced lipid peroxidation and increased glutathione level in brain tissue and ameliorated the histopathological changes induced by thioacetamide in the brain and liver. CONCLUSIONS It can be concluded based on the findings that the combination therapy of Lactobacillus plantarum UBLP40 and Bacillus clausiiUBBC07 proves to be effective in acute hepatic encephalopathy in the preclinical stage, and further studies are required to assess this therapy potential in the clinical setting.
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Affiliation(s)
- Lalita Shahgond
- Department of Pharmacology, S.S.R. College of Pharmacy, Silvassa, Dadra and Nagar Haveli, India, 396230
| | - Chirag Patel
- Department of Pharmacology, L. M. College of Pharmacy, Ahmedabad, 380009, India.
| | - Khushboo Thakur
- Department of Pharmacology, S.S.R. College of Pharmacy, Silvassa, Dadra and Nagar Haveli, India, 396230
| | - Dipta Sarkar
- Department of Pharmacology, S.S.R. College of Pharmacy, Silvassa, Dadra and Nagar Haveli, India, 396230
| | - Sanjeev Acharya
- Department of Pharmacology, S.S.R. College of Pharmacy, Silvassa, Dadra and Nagar Haveli, India, 396230
| | - Priyanshi Patel
- Department of Pharmacology, S.S.R. College of Pharmacy, Silvassa, Dadra and Nagar Haveli, India, 396230
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Abstract
Research increasingly shows that the gut-liver-brain axis is a crucial component in the pathophysiology of hepatic encephalopathy (HE). Due to the limitations of current standard-of-care medications, non-pharmacological treatments that target gut dysbiosis, including probiotics, nutritional management, and fecal microbiota transplants, are being considered as alternative and adjunct therapies. Meta-analyses note that probiotics could offer benefits in HE treatment, but have not shown superiority over lactulose. Emerging literature suggests that fecal microbiota transplants could offer a novel strategy to treat gut dysbiosis and favorably impact HE. Finally, liver support devices and liver transplantation could offer a last-resort treatment option for persistent HE.
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Affiliation(s)
- Vanessa Weir
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Pennsylvania, Perelman Center for Advanced Medicine, 7 South Pavilion, 3400 Civic Center Boulevard, HUP, Philadelphia, PA 19104, USA
| | - K Rajender Reddy
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Pennsylvania, 2 Dulles, 3400 Spruce Street, HUP, Philadelphia, PA 19104, USA.
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Abstract
PURPOSE OF REVIEW Liver transplantation (LT) remains the only way to cure patients with severe liver diseases. Important questions about neurological sequelae and quality of life after LT have emerged. In this review, we discuss the neurocognitive changes associated with LT and we conclude with recommendations in this regard for patients, caregivers, and physicians. RECENT FINDINGS Compared with other solid organ recipients, LT patients tend to have a higher incidence (up to 30%) of neurological complications post-LT. Even in absence of previous episodes of hepatic encephalopathy (HE), some patients display new onset of neurological symptoms post-LT, raising the concern about the role of other factors that may have a direct impact on cognitive function. SUMMARY Different mechanisms have been postulated to explain these postoperative neurological symptoms. They include sequelae of HE, persistent impairment of cognitive function due to cirrhosis, or postoperative decompensation of an unknown or undiagnosed neurodegenerative disorder.
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Affiliation(s)
- Somaya A. M. Albhaisi
- Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA 23298-0341 USA
| | - Jasmohan S. Bajaj
- Division of Gastroenterology, Hepatology and Nutrition, Department of Internal Medicine, Virginia Commonwealth University and McGuire VA Medical Center, 1201 Broad Rock Boulevard, Richmond, VA USA
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Weiss N, Thabut D. Neurological Complications Occurring After Liver Transplantation: Role of Risk Factors, Hepatic Encephalopathy, and Acute (on Chronic) Brain Injury. Liver Transpl 2019; 25:469-487. [PMID: 30697911 DOI: 10.1002/lt.25420] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Accepted: 12/19/2018] [Indexed: 02/06/2023]
Abstract
Orthotopic liver transplantation (LT) remains the only way to definitively cure patients with the most severe liver diseases. Because the survival rate is now fairly high, important questions about neurological sequelae or quality of life after LT have emerged. Indeed, LT represents a peculiar situation because up to 30% of patients present with neurological symptoms after LT compared with only 4% after cardiac transplant and 0.5% after renal transplant. These postoperative neurological symptoms have long been interpreted as sequelae of hepatic encephalopathy (HE). However, postoperative decompensation of an unknown cerebral condition due to the pathophysiology of cirrhosis or undiagnosed neurodegenerative disorders or aging constitute other possibilities that are underrecognized. Some patients who undergo LT for acute liver failure and patients with cirrhosis without episodes of HE and without any previous cerebral alteration also display post-LT neurological symptoms. This latter situation speaks in favor of a direct adverse effect of either general anesthesia, the surgical procedure, or factors related to the postoperative intensive care unit (ICU) environment. The role of inflammation, which has been described in the ICU setting, could also be a crucial determinant. In this review, we will discuss the neurological complications associated with LT, the neurocognitive complications after LT, and how to assess the LT-related neurological or neurocognitive complications. Furthermore, we will review the various hypotheses surrounding post-LT neurocognitive impairment and will conclude with recommendations for future directions.
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Affiliation(s)
- Nicolas Weiss
- Brain Liver Pitié-Salpêtrière (BLIPS) Study Group, Assistance Publique - Hôpitaux de Paris, Groupement Hospitalier Pitié-Salpêtrière-Charles Foix, Département de Neurologie, Unité de Réanimation Neurologique, Sorbonne Université, Paris, France.,Centre de Recherche Saint-Antoine (CRSA), Sorbonne Université, INSERM, Paris, France
| | - Dominique Thabut
- Centre de Recherche Saint-Antoine (CRSA), Sorbonne Université, INSERM, Paris, France.,Brain Liver Pitié-Salpêtrière (BLIPS) Study Group, Assistance Publique - Hôpitaux de Paris, Groupement Hospitalier Pitié-Salpêtrière-Charles Foix, Service d'Hépato-Gastroentérologie, Unité de Soins Intensifs d'Hépato-Gastroentérologie, Sorbonne Université, Paris, France
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El-Marasy SA, El Awdan SA, Abd-Elsalam RM. Protective role of chrysin on thioacetamide-induced hepatic encephalopathy in rats. Chem Biol Interact 2019; 299:111-119. [PMID: 30500344 DOI: 10.1016/j.cbi.2018.11.021] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Revised: 11/10/2018] [Accepted: 11/26/2018] [Indexed: 12/12/2022]
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Liver Transplant Recipients Older Than 60 Years Show Executive and Memory Function Improvement Comparable to Younger Recipients. PSYCHOSOMATICS 2019; 60:488-498. [PMID: 30772017 DOI: 10.1016/j.psym.2019.01.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 01/21/2019] [Accepted: 01/21/2019] [Indexed: 01/06/2023]
Abstract
BACKGROUND Increasing numbers of patients over the age of 60 are undergoing liver transplantation. OBJECTIVE We sought to determine whether age or clinical morbidities were associated with pre- and post-transplant executive and memory performance using the Brief Test of Adult Cognition by Telephone (BTACT). METHODS Participants included 36 recipients with n = 20 in the older group (>60 y) and n = 16 in the younger group (≤60 years). The BTACT was administered an average of 3 months before transplant, and at follow-up post-transplant intervals of 3, 6, and 9 months. BTACT composite scores for memory and executive function with age and education norms were obtained. RESULTS Older recipients were more likely to have hepatocellular carcinoma, a lower biological MELD score at transplant, less cellular rejection, and fewer post-operative hospital days. Older and younger recipients showed comparable pre-transplant executive and memory function and comparable post-transplant improvement. Both older and younger patients showed statistically significant improvement in executive function scores at 3 months post-transplant and maintained improvement at 6 and 9 months. Memory function improved significantly in older patients by 6 months post-transplant but did not improve significantly in the younger group. CONCLUSION Older liver transplant recipients were more likely to have hepatocellular carcinoma and a lower biological MELD score than younger recipients, but both age groups showed comparable pre-transplant cognitive performance and post-transplant cognitive improvement. Additionally, a normed telephone test can be used to effectively screen and track executive and memory function post-transplant.
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Macías-Rodríguez RU, Ruiz-Margáin A, Cantú-Brito C, Flores-Silva DF, García-Flores OR, Cubero FJ, Larrieta-Carrasco E, Torre A. Changes in Cerebral Hemodynamics in Patients With Cirrhosis After Liver Transplantation. Liver Transpl 2018; 24:1673-1679. [PMID: 30207422 DOI: 10.1002/lt.25335] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 08/30/2018] [Indexed: 12/26/2022]
Abstract
Improvement in cognitive function after orthotopic liver transplantation (LT) has been demonstrated in the acute setting immediately after LT and in acute liver failure. However, the longterm changes in cerebral hemodynamics after LT remain unexplored. Therefore, we aimed to evaluate the longterm changes in cerebral hemodynamics of patients with cirrhosis after LT. In this prospective cohort study, we performed transcranial Doppler ultrasonography (TCD) measuring the pulsatility index (PI), resistance index (RI), and breath-holding index (BHI) to evaluate cerebrovascular structural integrity and reactivity, respectively, in both middle cerebral arteries before and after LT. Neuropsychometric tests and West-Haven criteria were used for hepatic encephalopathy (HE) characterization. Interleukin 6 and tumor necrosis factor α plasma levels were measured. Descriptive statistics and Wilcoxon's test were used. There were 27 patients who were included. Median follow-up after LT was 6 months, mean age before LT was 46.3 ± 10.3 years, the main etiology was hepatitis C virus (59%), and most of the patients were Child-Pugh B (15/27). Model for End-Stage Liver Disease (MELD) score was 16 ± 7.5, MELD-Na was 19.3 ± 7.1, Psychometric Hepatic Encephalopathy Score was -3.48 ± 3.66, and critical flicker fusion (CFF) was 40.28 ± 5.70 Hz. Before LT, 17/27 patients had HE and 11/27 ascites. A decrease of 20.8% and 13.5% in PI and RI was observed after LT (P < 0.001, both), together with an increase in BHI (32.4%, P = 0.122). These changes in cerebral hemodynamics paralleled those in systemic inflammation. Clinical improvement in cognition was observed in all patients with overt HE after LT. In conclusion, these results show a significant improvement in cerebral hemodynamics after LT, obtained through TCD, indicating less arterial cerebral vasoconstriction together with a decrease in systemic inflammation. Changes in cerebral vasoconstriction can be the basis for the improvement in cognitive function after LT in the long term.
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Affiliation(s)
| | - Astrid Ruiz-Margáin
- Departments of Gastroenterology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Carlos Cantú-Brito
- Neurology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | | | | | - Francisco Javier Cubero
- Department of Immunology, Ophtalmology and ORL, Complutense University School of Medicine, Madrid, Spain.,12 de Octubre Health Research Institute, Madrid, Spain
| | - Elena Larrieta-Carrasco
- Departments of Gastroenterology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Aldo Torre
- Departments of Gastroenterology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
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