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Research library — page 127

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RPEP-14730 · 2026

Breaking Up Bile Acid Traps Improves Peptide Drug Transport in Lab Tests but Not in Living Animals

Bile acid sequestrants (BAS) reduced bile acid levels in vitro and disrupted bile acid-phospholipid mixed micelles (BAPMM), increasing the concentration of free octreotide available to cross intestinal membranes. This enhanced peptide membrane flux without compromising the enzymatic stability that micelles provide. However, the in vivo results were disappointing — oral colestipol (a BAS) did not significantly improve octreotide absorption in animals. Additionally, cyclic E-cadherin peptide (ECP) permeation enhancers were tested but their specific in vivo results were not detailed. The study highlights that BAPMM sequestration is an important but not sole barrier to oral peptide bioavailability.

Al-Tamimi, Zahraa; Feng, Mei; Elballa, Waleed; Houser, Sydney; Hageman, Michael J ·

RPEP-14731 · 2026

SGLT2 Inhibitors vs. GLP-1 Agonists for Type 2 Diabetes: Which Works Better in the Real World?

From 22,100 research articles screened, the systematic review included observational studies comparing SGLT2 inhibitors and GLP-1 receptor agonists in real-world type 2 diabetes patients. Key pooled analysis findings: - Heart failure and MACE/revascularization risk ratios were slightly higher with SGLT2 inhibitors compared to GLP-1 agonists (meaning GLP-1 agonists had a slight edge for cardiovascular event reduction) - Renal outcome odds ratios also slightly favored GLP-1 agonists - However, SGLT2 inhibitors showed lower hypoglycemic events and lower all-cause mortality rates - SGLT2 inhibitors were more effective specifically at reducing hospitalization for heart failure The findings suggest these drug classes have complementary strengths rather than one being universally superior.

Alam, Aftab; Imran, Mohd; Ur Rehman, Zia; Sahoo, Biswa Mohan; Mahapatra, Manoj Kumar ·

RPEP-14733 · 2026

Semaglutide in Obese Women With PCOS: Real-World Weight Loss and Metabolic Improvements

Across 58 obese women with PCOS treated with semaglutide in routine clinical practice, mean weight loss was 12.6 ± 9.6 kg, representing 11.4% of total body weight (p < 0.0001). Seventy-nine percent of participants lost more than 5% of their body weight — the threshold considered clinically meaningful for PCOS. Mean BMI dropped from 40.7 to 36.2 kg/m² (p < 0.0001). Systolic blood pressure fell by 6.3 mmHg (p = 0.012). HbA1c decreased from 35.3 to 33 mmol/mol (p = 0.0014). Total cholesterol dropped from 4.8 to 4.45 mmol/L (p = 0.03). Among those with irregular periods, 50% reported subjective improvement, while 33% with acne and 29% with hirsutism also noted improvements.

Alawami, Fatimah; Novaes, Olivia; Gibney, James; Phelan, Niamh; Behan, Lucy Ann; Owens, Lisa · Retrospective Cohort

RPEP-14734 · 2026

Tirzepatide Restored Testosterone and Sperm Quality in Diabetic Rats Better Than Metformin

In diabetic Wistar rats treated for eight weeks, tirzepatide produced comprehensive reproductive improvements: restored testosterone and gonadotropin levels, enhanced sperm quality, reduced lipid peroxidation (oxidative fat damage), and preserved testicular architecture with increased PCNA expression (cell proliferation) and reduced caspase-3-mediated apoptosis (programmed cell death). The protective mechanism involved activation of the Nrf2/Keap1 antioxidant pathway and normalization of steroidogenic gene expression. Crucially, a pair-fed diabetic control group demonstrated that these effects were largely independent of weight reduction — pointing to direct tissue-protective actions of tirzepatide. All reproductive outcomes were superior to those achieved with metformin.

Albokhadaim, Ibrahim ·

RPEP-14736 · 2026

Kuwait Expert Panel Recommends GLP-1 Drugs for Combined Heart, Kidney, and Metabolic Disease

Expert consensus supports multidisciplinary CKM syndrome management with expanded GLP-1 RA access, particularly semaglutide, to address Kuwait's high burden of obesity and metabolic disease.

Aldahi, Waleed A; Alenezi, Abdullah; Alessa, Thamer; Alhamdan, Rashed; Al-Humood, Khaldoon A; Alqallaf, Ahmed; Alotaibi, Torki; Alrajab, Heba; Alshammari, Abdulmuhsen M; Alyousef, Anas M; Alsayed Hashem, Asrar; Rizzo, Manfredi ·

RPEP-14739 · 2026

Major U.S. Obesity Societies Issue New Evidence-Based Guidance on Weight Loss Medications

Joint expert guidance from three major U.S. obesity organizations provides updated, evidence-graded recommendations for pharmacological obesity management.

Alexander, Lydia; Purnell, Jonathan Q; Burridge, Karlijn; Cornier, Marc-André; Golden, Angela; Bade, Deborah; Look, Michelle; Nadglowski, Joe; Ávila-Oliver, Camila; Novillo, Francisco; Rojas-Gómez, Ana María; Hussey, Brad; Salas, Ximena Ramos ·

RPEP-14741 · 2026

Anti-Doping Lab Maps How Next-Gen Weight Loss Peptides Break Down in the Body

In vitro metabolic profiling identified breakdown products of pramlintide, cagrilintide, and KBP-042, supporting development of anti-doping detection methods for next-generation weight loss peptides.

Alhalabi, Hana; Borschel, Lisa; Le Foll, Christelle; Thomas, Andreas; Bally, Lia; Thevis, Mario ·

RPEP-14743 · 2026

Peer-Led Heart Failure Screening Program for Rural Methamphetamine Users

Study protocol describes a peer-led BNP screening plus telecardiology intervention designed to detect methamphetamine-associated heart failure in rural communities.

Alias-Ferri, Maria; Kersey, Cooper B; Shalen, Evan F; Cook, Ryan; Gregoire, Devin; Hoffman, Kim; Beam, Michelle; Levander, Ximena A; Pertl, Kellie; Stensby, Alexis; Gonzales, Paul; Smith, Shanna; Evernden, Tabetha; Longenecker, Chris T; Korthuis, P Todd; Chan, Brian ·

RPEP-14745 · 2026

Semaglutide Causes Significant Fat Loss but Also Reduces Lean Muscle Mass

Semaglutide 2.4mg produced significant weight and fat loss but also reduced lean body mass, while handgrip strength was generally preserved through 12 months.

Alissou, Mathieu; Demangeat, Thomas; Folope, Vanessa; Van Elslande, Hélène; Lelandais, Hélène; Blanchemaison, Julia; Cailleaux, Pierre-Emmanuel; Guney, Suzan; Aupetit, Alexandra; Aubourg, Agnès; Rapp, Clément; Petit, André; Godin, Morgane; Vignal, Luc; Grigioni, Sébastien; Déchelotte, Pierre; Colange, Guillaume; Coëffier, Moïse; Achamrah, Najate ·

RPEP-14748 · 2026

Tirzepatide Does Not Cause Nutritional Deficiencies in Large Obesity Trials

Tirzepatide treatment across the SURMOUNT-1-4 trials was not associated with worsening nutritional status despite appetite and dietary intake reduction.

Almandoz, Jaime P; Pickett-Blakely, Octavia; Tewksbury, Colleen; Stefanski, Adam; Gonsahn-Bollie, Sylvia; Dimitriadis, Georgios K; Murro, Ada Leticia; Cao, Dachuang; Meng, Qier; Neff, Lisa M ·

RPEP-14750 · 2026

GIP: The Other Incretin Hormone Gaining Ground in Diabetes Drug Development

GIP is emerging as a critical therapeutic target alongside GLP-1, with dual agonists showing enhanced efficacy for type 2 diabetes management.

Almorza-Gomar, David; Díaz-Gómez, Alfredo; Visiedo, Francisco; García-Ortiz, José-Carlos; Camacho-Ramírez, Alonso; Ribelles-García, Antonio; Prada-Oliveira, José-Arturo; Pérez-Arana, Gonzalo-Martín ·

RPEP-14753 · 2026

New Dual-Channel Fluorescence Assay Maps How Membrane-Active Peptides Work

A dual-channel fluorescence assay can distinguish between cell-penetrating and pore-forming peptide mechanisms by mapping different patterns of membrane permeabilization.

Alnajjar, Mohammad A; Schöpper, Sandra N; Pramod, Malavika; Reingolz, Thomas; Müller, Lina; Neumann, Justin; Nilam, Mohamed; Nau, Werner M; Hennig, Andreas ·

RPEP-14755 · 2026

SGLT2 Inhibitors vs. GLP-1 Agonists: Network Meta-Analysis Compares Heart and Kidney Benefits

Both SGLT2 inhibitors and GLP-1 RAs significantly reduce cardiovascular and renal events in type 2 diabetes, with potential differential benefits for specific outcomes.

Alqurain, Aymen A; Salem, Manal; Algarzai, Bashayer A; Eljadi, Eman M; Elsayed, Hazem S; Almuhanna, Ahmed; Albuhayji, Deema S; Salami, Mohammad; Alzahrani, Joud; Alsayyali, Juri; Alqarni, Abdulrahman; Alqahtani, Nessreen; Alotaibi, Fay T; Alyami, Gharam G ·

RPEP-14756 · 2026

Two Cases of Pancreatic Cysts Found in Women Using GLP-1 Medications

Two patients without typical risk factors developed pancreatic mucinous cystic neoplasms following GLP-1 RA use, suggesting a possible association requiring further investigation.

Alsaleh, Nourah Mohammed; Abo Alshamat, Renad; Almrzouqi, Wejdan; Alhebshi, Mohammed; Aljuhani, Turky; Almahdi, Rahf; Almaghrabi, Majed; Rammal, Almotasembillah; Ageel, Amro; Alzahrani, Mohammed Ahmad ·

RPEP-14757 · 2026

Bibliometric Analysis Maps the Most Influential Research on Incretin Therapy

The most influential incretin therapy publications cluster around GLP-1 RA efficacy, cardiovascular outcomes, and weight management — reflecting the field's rapid clinical expansion.

Alsaygh, Ehab F; Aljarboa, Abdullah M; Alhazmi, Adel A; Alhazmi, Abdullah S; Alraddadi, Osamah A; Althagafi, Aseel A; Alhojele, Mohmmed F ·

RPEP-14758 · 2026

Teen Develops Blood Clot Two Weeks After Starting Oral Semaglutide

A 16-year-old developed acute DVT within 14 days of starting oral semaglutide 7mg, suggesting a possible temporal association with GLP-1 RA initiation.

Alsermani, Maamoun; Ali Alkahmous, Baraa; Alhutayrashi, Arwa A; Alshalhoob, Fai S; Abulrahman Almosaiteer, Sarah; Aljubayri, Eman; Saleh Alwabel, Assia; Sermani, Anas ·

RPEP-14759 · 2026

Saudi Experts Develop Integrated Approach to Managing Heart, Kidney, Metabolic, and Liver Disease Together

Saudi consensus panel recommends integrated CRMD management with semaglutide as a cornerstone therapy, citing robust evidence across glycemic, weight, cardiovascular, renal, and hepatic outcomes.

Alshaikh, Abdulrahman; Alshehri, Ali; Alzubaidi, Lamya; Elbadawi, Hussein; Alsaeed, Abdulghani; Almehthel, Mohammed; Aldahash, Raed; Alsabaan, Fahad; Alotaibi, Metib; Alghamdi, Khalid; Alamri, Hussein; Bakhsh, Abdulmohsen; Evans, Marc; Issak, Emad R; Alsifri, Saud ·

RPEP-14762 · 2026

New Machine Learning Tool Predicts How Immune Cells Present Modified Peptides

NetMHCIIphosPan achieves superior prediction of HLA class II presentation of phosphorylated peptides compared to existing methods.

Alvarez, Heli M Garcia; Kaabinejadian, Saghar; Yari, Hooman; Shepherd, Chloe M; Hildebrand, William H; Sette, Alessandro; Peters, Bjoern; Parker, Robert; Ternette, Nicola; Nielsen, Morten ·

RPEP-14764 · 2026

Antimicrobial Peptide Tyrothricin Shows Activity Against Toxoplasma Parasite

Tyrothricin inhibited T. gondii tachyzoite proliferation in vitro, with proteomics identifying potential molecular targets in the parasite.

Amdouni, Yosra; Boubaker, Ghalia; Müller, Joachim; Sousa, Maria Cristina Ferreira de; Hänggeli, Kai Pascal Alexander; Uldry, Anne-Christine; Braga-Lagache, Sophie; Heller, Manfred; Hemphill, Andrew ·

RPEP-14771 · 2026

Low-Dose Tirzepatide Produces Meaningful Weight Loss in Just 12 Weeks in Real-World Use

Low-dose tirzepatide (2.5-5mg) produced significant weight loss and metabolic improvements in 12 weeks in adults with obesity without diabetes.

Angelopoulos, Nikolaos; Androulakis, Ioannis; Rizoulis, Andreas; Boniakos, Anastasios; Fousteris, Evangelos; Mentzelopoulou, Voula; Petkova, Valentina; Paparodis, Rodis; Zianni, Dimitra; Florakis, Dimos; Korakovouni, Areti; Mouslech, Zadalla; Livadas, Sarantis; Tzoulis, Ploutarchos ·

RPEP-14772 · 2026

Combining Two Gut Nutrients Lowers Blood Sugar After Meals in Type 2 Diabetes

Combined intraduodenal lauric acid and L-tryptophan synergistically stimulated GLP-1/CCK release and reduced postprandial glucose in type 2 diabetes.

Anjom-Shoae, Javad; Fitzgerald, Penelope C E; Rose, Braden D; Bitarafan, Vida; Rehfeld, Jens F; Horowitz, Michael; Feinle-Bisset, Christine ·

RPEP-14777 · 2026

Japan's Diabetes Prescribing Trends Show GLP-1 and SGLT2 Drug Use Rising, Older Drugs Declining

GLP-1 RA and SGLT2i prescribing in Japan is rising rapidly, with prescribing patterns increasingly differentiated by patient characteristics like age, BMI, and kidney function.

Aoyama, Kazuki; Okada, Akira; Kaneko, Hidehiro; Azegami, Tatsuhiko; Suzuki, Yuta; Meguro, Shu; Fujiu, Katsuhito; Takeda, Norifumi; Morita, Hiroyuki; Node, Koichi; Yamauchi, Toshimasa; Nangaku, Masaomi; Takeda, Norihiko; Yasunaga, Hideo; Hayashi, Kaori ·