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1.
Front Med (Lausanne) ; 11: 1374603, 2024.
Article in English | MEDLINE | ID: mdl-38725465

ABSTRACT

Background: Several studies suggest that women with Crohn disease (CD) have reduced fertility due to decreased ovarian reserve, among other causes. On the other hand, male CD patients could have difficulties conceiving. The present study aimed to test the effect of CD on both male and female fertility potential, Sertoli cell function and ovarian reserve, assessed by inhibin-B (IB) plus IB:FSH ratio (IFR) and antiMüllerian hormone (AMH), respectively. Sexual dysfunction (SD) was studied as secondary endpoint. Methods: We performed a cross-sectional, case-control study. Serum IB levels plus IFR were measured in 58 men with CD and compared to 25 age-matched healthy controls (HC). Serum AMH levels were measured in 50 women with CD and in 30 HC matched by age. SD was assessed by means of the International Index of Erectile Function (IIFE-15) in males and the Index of Female Sexual Function (IFSF) in women. Results: A total of 108 CD patients and 55 HC were included. IB serum levels were significantly lower in CD men than in HC (177 ± 58 vs. 234 ± 75 pg./mL, p = 0.001). IFR was also decreased in CD patients compared to HC (58.27 ± 59.5 vs. 91.35 ± 60.04, p = 0.014). Women with CD > 30 years had lower serum AMH levels compared to HC (1.15 ± 0.74 vs. 2.14 ± 1.68 ng/mL, p = 0.033). In addition, CD women >30 years presented a serum AMH < 2 ng/mL more frequently than HC (90% vs. 40%, p = 0.004). The prevalence of SD was significantly higher among both male and female CD patients compared to HC, without association to fertility potential. Age was the only predictor of low ovarian reserve. Conclusion: Testicular Sertoli cell function assessed through serum IB levels and IFR is decreased in CD male patients compared to HC, regardless of age. Age > 30 years is the single independent predictor of reduced ovarian reserve in women with CD. These results should be confirmed in further studies in order to properly counsel patients with CD and desire for offspring.

2.
Cult. cuid ; 28(68): 1-6, Abr 10, 2024.
Article in Spanish | IBECS | ID: ibc-232308

ABSTRACT

En esta editorial el autor reflexiona acerca de la dicotomía teoría/práctica y como la integración de teorías transdisciplinarias pueden contribuir a acercar posturas. Para ello comenta la teoría de la práctica desarrollada por Bourdieu y la interseccionalidad aportando un ejemplo de como su interconexión puede mejorar tanto la teoría como la práctica de la enfermería y por tanto contribuyendo a su vertebración y epistemología.(AU)


In this editorial the author reflects on the theory/practicedichotomy and how the integration of transdisciplinarytheories can help to bring positions closer together. To doso, he discusses the theory of practice developed by Bourdieuand intersectionality, providing an example of how theirinterconnection can improve both the theory and practice ofnursing and thus contribute to its structuring and epistemology.(AU)


Neste editorial o autor reflecte sobre a dicotomia teoria/práticae como a integração de teorias transdisciplinares pode ajudar aaproximar posições. Para isso, discute a teoria da prática desenvolvidapor Bourdieu e a interseccionalidade, exemplificando como a suainterligação pode melhorar a teoria e a prática da enfermageme, assim, contribuir para a sua estruturação e epistemologia.(AU)


Subject(s)
Humans , Male , Female , Interdisciplinary Communication , Nursing , Nursing Care , Nursing Theory
3.
J Clin Med ; 13(7)2024 Mar 22.
Article in English | MEDLINE | ID: mdl-38610601

ABSTRACT

Objectives: To compare complications associated with percutaneous gastrostomies performed using PUSH and PULL techniques, whether endoscopic (PEG) or radiological (PRG), in a tertiary-level hospital. Methods: This was a prospective observational study. Adult patients who underwent percutaneous PULL or PUSH gastrostomy using PEG or PRG techniques at the Virgen del Rocio University Hospital and subsequently followed up in the Nutrition Unit between 2009-2020 were included. X2 tests or Fisher's test were used for the comparison of proportions when necessary. Univariate analysis was conducted to study risk factors for PRG-associated complications. Results: n = 423 (PULL = 181; PUSH = 242). The PULL technique was associated with a higher percentage of total complications (37.6% vs. 23.8%; p = 0.005), exudate (18.2% vs. 11.2%; p = 0.039), and irritation (3.3% vs. 0%; p = 0.006). In the total sample, there were 5 (1.1%) cases of peritonitis, 3 (0.7%) gastrocolic fistulas, and 1 (0.2%) death due to complications associated with gastrostomy. Gender, age, and different indications were not risk factors for a higher number of complications. The most common indications were neurological diseases (35.9%), head and neck cancer (29%), and amyotrophic lateral sclerosis (17.2%). Conclusions: The PULL technique was associated with more total complications than the PUSH technique, but both were shown to be safe techniques, as the majority of complications were minor.

4.
Eur Spine J ; 2024 Apr 22.
Article in English | MEDLINE | ID: mdl-38649486

ABSTRACT

PURPOSE: Barbed sutures are tissue control devices that can reduce operating room time and costs. We analyzed the utility of barbed sutures in posterior spinal surgery in order to prove non-inferiority to conventional methods for wound closure. METHODS: A cohort of patients undergoing elective posterior spinal surgery in which barbed (prospective) versus conventional sutures (retrospective) were used was analyzed. The primary endpoint was the occurrence of wound healing complications or the need for surgical revision. Secondary endpoints included postoperative stay, readmission rate, and duration and cost of wound closure. RESULT: A total of 483 patients participated in the study, 183 in the Barbed group and 300 in the Conventional group. Wound dehiscence or seroma occurred in 3.8% and 2.7% of the Barbed and Conventional groups, respectively (p = 0.6588). Both superficial (1.6% versus 4.0%, P = 0.2378) and deep infections (2.7% versus 4.7%, p = 0.4124) occurred similarly in both groups. Overall, the rate of re-intervention due to wound healing problems was also similar (4.9% versus 5.3%, p = 0.9906), as well as, total median hospital stay, postoperative stay and 30-day re-admission rates. The average duration of wound closure (1.66 versus 4.16 min per level operated, p < 0.0001) strongly favored the Barbed group. The mean cost of wound closure per patient was higher in the Barbed group (43.23 € versus 22.67 €, p < 0.0001). CONCLUSIONS: In elective posterior spinal procedures, the use of barbed sutures significantly reduced the duration of wound closure. The wound healing process was not hindered and the added cost related to the suture material was small.

5.
Front Public Health ; 12: 1283350, 2024.
Article in English | MEDLINE | ID: mdl-38645447

ABSTRACT

The WHO African Region had 81 million people with chronic hepatitis B in 2019, which remains a silent killer. Hepatitis B virus (HBV), hepatitis delta virus (HDV), and HIV can be transmitted from the mother to child. If the HBV infection is acquired at infancy, it may lead to chronic hepatitis B in 90% of the cases. WHO reports that 6.4 million children under 5 years live with chronic hepatitis B infection worldwide. The prevention of mother-to-child transmission (PMTCT) of HBV is therefore critical in the global elimination strategy of viral hepatitis as we take lessons from PMTCT of HIV programs in Africa. We sought to create a network of multidisciplinary professional and civil society volunteers with the vision to promote cost-effective, country-driven initiatives to prevent the MTCT of HBV in Africa. In 2018, the Mother-Infant Cohort Hepatitis B Network (MICHep B Network) with members from Cameroon, Zimbabwe, and the United Kingdom and later from Chad, Gabon, and Central African Republic was created. The long-term objectives of the network are to organize capacity-building and networking workshops, create awareness among pregnant women, their partners, and the community, promote the operational research on MTCT of HBV, and extend the network activities to other African countries. The Network organized in Cameroon, two "Knowledge, Attitude and Practice" (KAP) surveys, one in-depth interview of 45 health care workers which revealed a high acceptability of the hepatitis B vaccine by families, two in-person workshops in 2018 and 2019, and one virtual in 2021 with over 190 participants, as well as two workshops on grant writing, bioethics, and biostatistics of 30 postgraduate students. Two HBV seroprevalence studies in pregnant women were conducted in Cameroon and Zimbabwe, in which a prevalence of 5.8% and 2.7%, respectively, was reported. The results and recommendations from the MICHep B Network activities could be implemented in countries of the MICHep B Network and beyond, with the goal of providing free birth dose vaccine against hepatitis B in Africa.


Subject(s)
Hepatitis B , Infectious Disease Transmission, Vertical , Humans , Infectious Disease Transmission, Vertical/prevention & control , Female , Africa/epidemiology , Pregnancy , Hepatitis B/prevention & control , Hepatitis B/transmission , Infant , Disease Eradication , Adult , Pregnancy Complications, Infectious/prevention & control , Infant, Newborn
6.
Health Econ ; 33(6): 1368-1386, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38450905

ABSTRACT

Previous research has shown that individuals do not always make rational decisions when selecting their health insurance, for example, due to the existence of information frictions or mental gaps. We study the effect of specific types of information provision for decision support on health plan choices and test their potential to improve decision quality by implementing a randomized laboratory experiment. We provide personalized and generic aids, differentiate between numerical and visual decision support, and provide one or two optional formats of personalized information. We find that generic aids have no effect on health plan choices while personalized information leads to better choices as measured by several indicators of decision quality. The largest effects were observed for those who "opted in" to visualize personalized information, with immediate and lasting improvements in health insurance decisions. By reducing information frictions, our results suggest that accessible and easy-to-use tools can positively impact health insurance navigation, improve decision-making, and reduce switching costs.


Subject(s)
Choice Behavior , Insurance, Health , Humans , Female , Male , Decision Making , Adult , Decision Support Techniques , Middle Aged
7.
J Occup Environ Med ; 2024 Mar 21.
Article in English | MEDLINE | ID: mdl-38517151

ABSTRACT

OBJECTIVE: Firefighters are at increased risk of colorectal cancer (CRC), yet rates of CRC screening are low among this occupational group. This study examines perceived risks, barriers, and facilitators to CRC screening. METHODS: Three semi-structured focus group discussions were conducted by investigators in Tucson, AZ. Thematic analysis was used to identify patterns and themes in the data. RESULTS: Three groups of firefighters (8 male (57%); 6 female (43%) mean age 50.4 (SD = 12.2) years) voluntarily participated in the CRC discussions. Four major themes were examined: (1) perceptions of risk for CRC, (2) barriers to cancer screening, (3) facilitators to getting cancer screening, and (4) misinformation about CRC and screening. CONCLUSIONS: Findings indicate unique perceptions, attitudes, and beliefs among firefighters. Results from this study will inform the adaptation of a tailored CRC screening intervention for firefighters.

8.
Endocrinol Diabetes Nutr (Engl Ed) ; 71(3): 119-123, 2024 Mar.
Article in English | MEDLINE | ID: mdl-38555108

ABSTRACT

INTRODUCTION/OBJECTIVES: Mutations in the ARMC5 (armadillo repeat containing 5, OMIM 615549) gene, a putative tumor suppressor gene, have recently been identified as a common cause of sporadic and familial bilateral macronodular adrenal hyperplasia (BMAH). Familial BMAH is thought to be caused by two mutations, one germline and the other somatic, as suggested by the 2-hit theory. The objective is to describe a new mutation and develop its clinical characteristics and implications. METHODS, RESULTS AND CONCLUSIONS: We present an affected family with 11 members carrying a novel mutation of the ARMC5 gene (NM_001288767.1): c.2162T>C p. (Leu721Pro). Two of the carriers developed clinical Cushing's syndrome (CS), two mild autonomous cortisol secretion (MACS) and one presented with autonomous cortisol secretion (ACS). Four patients developed other tumors, three of whom died from this cause. It is not known whether these tumors could be related to the described mutation.


Subject(s)
Adrenal Hyperplasia, Congenital , Cushing Syndrome , Neoplasms , Humans , Adrenal Hyperplasia, Congenital/complications , Adrenal Hyperplasia, Congenital/genetics , Cushing Syndrome/genetics , Germ-Line Mutation , Hydrocortisone , Hyperplasia , Tumor Suppressor Proteins/genetics
9.
Endocrinol Diabetes Nutr (Engl Ed) ; 71(3): 144-148, 2024 Mar.
Article in English | MEDLINE | ID: mdl-38555112

ABSTRACT

Gender affirming treatment in transgender women is based on a combination of antiandrogens and estrogens, with the latter maintained over the long term. When prescribing these treatments, we must consider the possibility of developing estrogen-dependent breast cancer. In transgender women, a breast cancer incidence of 4.1 per 100,000 has been estimated, which would increase the risk by 46% in relation to cisgender men but decrease it by 70% in relation to cisgender women. It is known that certain gene mutations such as BRCA1 imply an increased risk of breast cancer, but at present the risk in transgender women with BRCA1 treated with estrogens is not well established. We present the case of a transgender woman with a family history of breast cancer and BRCA1 mutation and the therapeutic decisions made in a multidisciplinary team. Following this case, we review and discuss the published literature.


Subject(s)
Breast Neoplasms , Transgender Persons , Transsexualism , Male , Humans , Female , Transsexualism/drug therapy , Breast Neoplasms/drug therapy , Breast Neoplasms/genetics , Estrogens , Mutation , BRCA1 Protein/genetics
10.
Support Care Cancer ; 32(3): 205, 2024 Mar 04.
Article in English | MEDLINE | ID: mdl-38433160

ABSTRACT

Equity, diversity, and inclusion (EDI) are essential for healthcare organizations since they allow for the development of programs and initiatives that bring together diverse perspectives and knowledge. Global multidisciplinary organizations, such as the Multinational Association for Supportive Care in Cancer (MASCC), need to understand the perspective of their members regarding EDI to identify opportunities to enhance diversity and inclusiveness and to better meet the needs of members from different backgrounds and resources. The MASCC Health Disparities Committee designed a survey to identify issues related to disparities faced by MASCC members when providing supportive care to patients with cancer and to examine the EDI landscape within the organization. Here, we report results related to EDI initiatives within the organization. Two-hundred and eighteen MASCC members responded to the survey (response rate 10.2%). The results indicated that respondents were generally satisfied with how MASCC manages leadership, membership, and organization-related EDI issues. Opportunities for improvement noted by respondents included developing strategies to foster a more diverse membership, improving communication regarding diversity in the organization, and increasing EDI content in educational sessions and publications. The results of this survey represent the first attempt at understanding how to improve EDI within MASCC and will be utilized to guide further initiatives and programs.


Subject(s)
Group Practice , Neoplasms , Humans , Diversity, Equity, Inclusion , Communication , Educational Status , Neoplasms/therapy
11.
Front Behav Neurosci ; 18: 1357363, 2024.
Article in English | MEDLINE | ID: mdl-38510830

ABSTRACT

Pigs can be an important model for preclinical biological research, including neurological diseases such as Alcohol Use Disorder. Such research often involves longitudinal assessment of changes in motor coordination as the disease or disorder progresses. Current motor coordination tests in pigs are derived from behavioral assessments in rodents and lack critical aspects of face and construct validity. While such tests may permit for the comparison of experimental results to rodents, a lack of validation studies of such tests in the pig itself may preclude the drawing of meaningful conclusions. To address this knowledge gap, an apparatus modeled after a horizontally placed ladder and where the height of the rungs could be adjusted was developed. The protocol that was employed within the apparatus mimicked the walk and turn test of the human standardized field sobriety test. Here, five Sinclair miniature pigs were trained to cross the horizontally placed ladder, starting at a rung height of six inches and decreasing to three inches in one-inch increments. It was demonstrated that pigs can reliably learn to cross the ladder, with few errors, under baseline/unimpaired conditions. These animals were then involved in a voluntary consumption of ethanol study where animals were longitudinally evaluated for motor coordination changes at baseline, 2.5, 5, 7.5, and 10% ethanol concentrations subsequently to consuming ethanol. Consistent with our predictions, relative to baseline performance, motor incoordination increased as voluntary consumption of escalating concentrations of ethanol increased. Together these data highlight that the horizontal ladder test (HLT) test protocol is a novel, optimized and reliable test for evaluating motor coordination as well as changes in motor coordination in pigs.

12.
Microorganisms ; 12(3)2024 Mar 06.
Article in English | MEDLINE | ID: mdl-38543581

ABSTRACT

In this study, bacterial isolates C1-4-7, D2-4-6, and M1-4-11 from Antarctic soil were phenotypically and genotypically characterized, and their antibacterial spectrum and that of cell-free culture supernatant were investigated. Finally, the effect of temperature and culture medium on the production of antimicrobial compounds was investigated. The three bacteria were identified as different strains of the genus Pseudomonas. The three bacteria were multi-drug resistant to antibiotics. They exhibited different patterns of growth inhibition of pathogenic bacteria. M1-4-11 was remarkable for inhibiting the entire set of pathogenic bacteria tested. All three bacteria demonstrated optimal production of antimicrobial compounds at 15 °C and 18 °C. Among the culture media studied, Nutrient broth would be the most suitable to promote the production of antimicrobial compounds. The thermostability exhibited by the antimicrobial molecules secreted, their size of less than 10 kDa, and their protein nature would indicate that these molecules are bacteriocin-like compounds.

13.
Therap Adv Gastroenterol ; 17: 17562848241234476, 2024.
Article in English | MEDLINE | ID: mdl-38445247

ABSTRACT

Background: The usefulness of thiopurines has been poorly explored in pouchitis and other pouch disorders. Objective: To evaluate the effectiveness and safety of azathioprine as maintenance therapy in inflammatory pouch disorders. Design: This was a retrospective and multicentre study. Methods: We included patients diagnosed with inflammatory pouch disorders treated with azathioprine in monotherapy. Effectiveness was evaluated at 1 year and in the long term based on normalization of stool frequency, absence of pain, faecal urgency or fistula discharge (clinical remission), or any improvement in these symptoms (clinical response). Endoscopic response was evaluated using the Pouchitis Disease Activity Index (PDAI). Results: In all, 63 patients were included [54% males; median age, 49 (28-77) years]. The therapy was used to treat pouchitis (n = 37) or Crohn's disease of the pouch (n = 26). The rate of clinical response, remission and non-response at 12 months were 52%, 30% and 18%, respectively. After a median follow-up of 23 months (interquartile range 11-55), 19 patients (30%) were in clinical remission, and 45 (66%) stopped therapy. Endoscopic changes were evaluated in 19 cases. PDAI score decreased from 3 (range 2-4) to 1 (range 0-3). In all, 21 patients (33%) presented adverse events and 16 (25%) needed to stop therapy. Conclusion: Azathioprine may be effective in the long term for the treatment of inflammatory pouch disorders and could be included as a therapeutic option.

14.
Dig Dis ; 2024 Mar 07.
Article in English | MEDLINE | ID: mdl-38452742

ABSTRACT

BACKGROUND: Risk factors for developing pancreatitis due to thiopurines in patients with inflammatory bowel disease (IBD) are not clearly identified. AIM: Our aim was to evaluate the predictive pharmacogenetic risk of pancreatitis in IBD patients treated with thiopurines. METHODS: We conducted an observational pharmacogenetic study of acute pancreatitis events in a cohort study of IBD patients treated with thiopurines from the prospectively maintained ENEIDA registry biobank of GETECCU. Samples were obtained and the CASR, CEL, CFTR, CDLN2, CTRC, SPINK1, CPA1, and PRSS1 genes, selected based on their known association with pancreatitis, were fully sequenced. RESULTS: Ninety-five cases and 105 controls were enrolled, 57% were women. Median age at pancreatitis diagnosis was 39 years. We identified 81 benign variants (50 in cases and 67 in controls) and a total of 35 distinct rare pathogenic and unknown significance variants (10 in CEL, 21 in CFTR, 1 in CDLN2, and 3 in CPA1). None of the cases or controls carried pancreatitis-predisposing variants within the CASR, CPA1, PRSS1, and SPINK1 genes, nor a pathogenic CFTR mutation. Four different variants of unknown significance were detected in the CDLN and CPA1 genes; one of them was in the CDLN gene in a single patient with pancreatitis, and 3 in the CPA1 gene in 5 controls. After the analysis of the variants detected, no significant differences were observed between cases and controls. CONCLUSION: In patients with IBD, genes known to cause pancreatitis seem not to be involved in thiopurine-related pancreatitis onset.

16.
Nat Commun ; 15(1): 1563, 2024 Feb 20.
Article in English | MEDLINE | ID: mdl-38378716

ABSTRACT

A general-purpose photonic processor can be built integrating a silicon photonic programmable core in a technology stack comprising an electronic monitoring and controlling layer and a software layer for resource control and programming. This processor can leverage the unique properties of photonics in terms of ultra-high bandwidth, high-speed operation, and low power consumption while operating in a complementary and synergistic way with electronic processors. These features are key in applications such as next-generation 5/6 G wireless systems where reconfigurable filtering, frequency conversion, arbitrary waveform generation, and beamforming are currently provided by microwave photonic subsystems that cannot be scaled down. Here we report the first general-purpose programmable processor with the remarkable capability to implement all the required basic functionalities of a microwave photonic system by suitable programming of its resources. The processor is fabricated in silicon photonics and incorporates the full photonic/electronic and software stack.

17.
Front Psychol ; 15: 1334308, 2024.
Article in English | MEDLINE | ID: mdl-38348263

ABSTRACT

Objective: Psychological factors, such as stress, anxiety, and depression, are frequently related to inflammatory bowel disease (IBD). However, few studies have examined these factors in patients newly diagnosed with IBD. The aim of the present study was to test the psychological burden in patients with a recent diagnosis of IBD and the factors related to this psychological burden. Methods: We performed a prospective, multi-center, observational study in patients with a new diagnosis of IBD (≤6 months). The patients were recruited from four different Spanish hospitals. Clinical and demographic characteristics were collected. Patients were evaluated using the Hospital Anxiety and Depression Scale and quality of life questionnaire for patients with inflammatory bowel disease (IBDQ-32). The Scale of Stress Perceived by the Disease was used to assess stressful life events. Results: We included 156 patients newly diagnosed with IBD [69 women; 80 Crohn's disease (CD) and 76 ulcerative colitis (UC)], with a mean age of 42.3 (SD 16.21) years. A total of 37.2% of patients had symptoms of anxiety and 17.3% had symptoms of depression. Quality of life was affected in 30.1% of patients. Factors related to anxiety in early IBD were being a woman and having CD. The only factor related to depression was the presence of comorbidity. Being a woman and having suffered previous stressful life events were factors related to impaired quality of life. Conclusion: Anxiety, depression, and impaired quality of life are frequent in patients with a recent diagnosis of IBD. This psychological burden is greater in women.

18.
J Vasc Interv Radiol ; 35(4): 550-557, 2024 Apr.
Article in English | MEDLINE | ID: mdl-38199458

ABSTRACT

PURPOSE: To determine the safety and potential effectiveness of transarterial embolization for adhesive capsulitis of the shoulder. MATERIALS AND METHODS: This prospective study analyzed consecutive adult patients with adhesive capsulitis referred for embolization between January 2018 and May 2023 after a poor response to treatment (symptoms and limitation of motion in ≥2 axes; ≤120° flexion, ≤50° external rotation and/or internal rotation with the shoulder abducted 90°) persisting for >3 months after having completed ≥6 weeks of analgesics and physical therapy. Different types of pain and mobility were measured before embolization and 1, 3, and 6 months after embolization. Overall upper limb function (Quick Disabilities of Arm, Shoulder, and Hand) and patient satisfaction were measured before and 6 months after embolization. Long-term follow-up comprised telephone interviews and clinical history reviews. RESULTS: A total of 20 patients (12 [60%] women; median age, 50.7; interquartile ranges [IQR], 45‒55 years) were included; 6 (30%) had diabetes and 15 (75%) were off work. Median duration of symptoms before embolization was 39.4 weeks (IQR, 28‒49 weeks), and median duration of rehabilitation therapy was 12.8 weeks (IQR, 8‒16 weeks). Six months after embolization, significant improvements were observed in nocturnal pain (P = .003), pain on moving (P = .001), external rotation (P < .001), internal rotation (P < .001), active flexion (P < .001), passive flexion (P = .03), active abduction (P < .001), passive abduction (P < .001), and overall function (P < .001). Despite objective improvements, patient satisfaction was nearly unchanged. Only 1 patient experienced a mild adverse event. CONCLUSION: Transarterial embolization is safe and potentially effective in treating adhesive capsulitis of the shoulder refractory to conventional treatment. Clinical improvements were maintained in the mid to long term.


Subject(s)
Bursitis , Shoulder Joint , Adult , Humans , Female , Middle Aged , Male , Shoulder , Prospective Studies , Shoulder Joint/diagnostic imaging , Bursitis/diagnostic imaging , Bursitis/therapy , Shoulder Pain/etiology , Shoulder Pain/therapy , Upper Extremity , Range of Motion, Articular/physiology , Treatment Outcome
19.
Int J Biol Macromol ; 261(Pt 2): 129694, 2024 Mar.
Article in English | MEDLINE | ID: mdl-38281525

ABSTRACT

The lignin from tritordeum straw, a hybrid cereal from crossbreeding of durum wheat and wild barley, was isolated and chemically characterized. Its composition and structure were studied by analytical pyrolysis (Py-GC/MS), nuclear magnetic resonance spectroscopy (NMR), Derivatization Followed by Reductive Cleavage (DFRC) method, and gel permeation chromatography (GPC). The data revealed an enrichment of guaiacyl (G) units (H:G:S of 3:61:36), which had a significant impact on the distribution of inter-unit linkages. The predominant linkages were the ß-O-4' alkyl-aryl ethers (78 % of all linkages), with substantial proportions of condensed linkages such as phenylcoumarans (11 %), resinols (4 %), spirodienones (4 %), and dibenzodioxocins (2 %). Moreover, DFRC revealed that tridordeum straw lignin was partly acylated at the γ-OH with both acetates and p-coumarates. Acetates were principally attached to G-units, whereas p-coumarates were predominantly attached to S-units. Furthermore, and more importantly, tritordeum lignin incorporates remarkable amounts of a valuable flavone, tricin, exceeding 30 g per kilogram of straw. Given the diverse industrial applications associated with this high-value molecule, tritordeum straw emerges as a promising and sustainable resource for its extraction.


Subject(s)
Edible Grain , Flavonoids , Lignin , Lignin/chemistry , Edible Grain/chemistry , Molecular Structure , Acetates/analysis
20.
Article in English, Spanish | MEDLINE | ID: mdl-38290648

ABSTRACT

Obesity is a multifactorial, chronic, progressive and recurrent disease considered a public health issue worldwide and an important determinant of disability and death. In Spain, its current prevalence in the adult population is about 24% and an estimated prevalence in 2035 of 37%. Obesity increases the probability of several diseases linked to higher mortality such as diabetes, cardiovascular disease, hyperlipidemia, arterial hypertension, non-alcoholic fatty liver disease, several types of cancer, or obstructive sleep apnea. On the other hand, although the incidence of inflammatory bowel disease (IBD) is stabilizing in Western countries, its prevalence already exceeds 0.3%. Paralleling to general population, the current prevalence of obesity in adult patients with IBD is estimated at 15-40%. Obesity in patients with IBD could entail, in addition to its already known impact on disability and mortality, a worse evolution of the IBD itself and a worse response to treatments. The aim of this document, performed in collaboration by four scientific societies involved in the clinical care of severe obesity and IBD, is to establish clear and concise recommendations on the therapeutic possibilities of severe or typeIII obesity in patients with IBD. The document establishes general recommendations on dietary, pharmacological, endoscopic, and surgical treatment of severe obesity in patients with IBD, as well as pre- and post-treatment evaluation.

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