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Research library — page 135

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RPEP-15135 · 2026

Liraglutide Shows Cognitive Benefits in Alzheimer's Phase 2b Trial with 204 Patients

Primary outcome (cerebral glucose metabolic rate) showed no significant change (difference -0.17, p=0.14). Secondary outcome ADAS-Exec favored liraglutide (0.15, p=0.01). Safety was confirmed in non-diabetic AD patients.

Edison, Paul; Femminella, Grazia Daniela; Ritchie, Craig; Nowell, Joseph; Holmes, Clive; Walker, Zuzana; Ridha, Basil; Raza, Sanara; Livingston, Nicholas R; Frangou, Eleni; Love, Sharon; Williams, Gareth; Lawrence, Robert; Mcfarlane, Brady; Archer, Hilary; Coulthard, Elizabeth; Underwood, Benjamin R; Koranteng, Paul; Karim, Salman; Bannister, Carol; Perneczky, Robert; Prasanna, Aparna; Junaid, Kehinde; McGuinness, Bernadette; Nilforooshan, Ramin; Macharouthu, Ajay; Donaldson, Andrew; Thacker, Simon; Russell, Gregor; Malik, Naghma; Mate, Vandana; Knight, Lucy; Kshemendran, Sajeev; Holscher, Christian; Mansouri, Anita; Chester-Jones, Mae; Holmes, Jane; Tan, Trisha; Williams, Steve; Ashraf, Azhaar; Brooks, David J; Harrison, John; Hinz, Rainer; Tadros, George; Passmore, Anthony Peter; Ballard, Clive ·

RPEP-15136 · 2026

Tirzepatide Reduces Alcohol Drinking and Relapse in Rodents Through Brain Reward Circuits

Tirzepatide attenuated alcohol reward (dopamine release p<0.001), dose-dependently reduced intake (p<0.001), prevented binge (p<0.01) and relapse drinking (p<0.001), with sustained efficacy, and induced lasting synaptic depression and histone changes in the lateral septum.

Edvardsson, Christian E; Adermark, Louise; Gottlieb, Sam; Alfreji, Safana; Emous, Thaynnam A; Gouda, Yomna; Thorsell, Annika; Vujičić, Milica; Aranäs, Cajsa; Benrick, Anna; Wernstedt Asterholm, Ingrid; Lopez, Marcelo F; Becker, Howard C; Jerlhag, Elisabet ·

RPEP-15138 · 2026

Real-World Oral Semaglutide Study in Saudi Arabia Shows 1% HbA1c and 4.4 kg Weight Reduction

Oral semaglutide reduced HbA1c by -1.0% (p<0.0001), body weight by -4.4 kg (p<0.0001), and waist circumference by -4.3 cm (p<0.0001), with 61.9% achieving HbA1c <7% and significant treatment satisfaction improvement.

ElBadawi, Hussein; Albalkhi, Nader; Al Kadhim, Ibrahim; Elsadig, Ahmed; Baltzis, Dimitrios; Hatahet, Mohamed Hassan; Ismail, Mahmoud; Khader, Said; Rasmussen, Christina Louise; Scheuer, Stine Hedegaard; Shalaby, Ahmed; Almehthel, Mohammed ·

RPEP-15139 · 2026

RAS Peptide Dynamics Predict COVID-19 Respiratory Deterioration and Outcomes

Worsening COVID-19 patients showed rising renin and Ang I (p<0.001), declining Ang II/Ang I ratio (p<0.001), increasing Ang 1-7 (p<0.001), and rising ADMA (p<0.001), with 28-day outcomes predicted by renin, Ang I, Ang 1-7, and ADMA.

Eleuteri, Davide; Del Tedesco, Filippo; Silvia, Federico; Tucciariello, Caterina; Ruggiero, Ersilia; Gervasoni, Jacopo; Santucci, Lavinia; Primiano, Aniello; Petrucci, Martina; Torelli, Ernico; Cianci, Rossella; Giannarelli, Diana; Cutuli, Salvatore Lucio; De Pascale, Gennaro; Bello, Giuseppe; Maria, Calabrese; Masullo, Matteo; Urbani, Andrea; Di Santo, Riccardo; Antonelli, Massimo; Montini, Luca ·

RPEP-15143 · 2026

GLP-1 Levels Are Elevated in Anorexia Nervosa and Correlate with Perfectionism

Non-weight-restored AN patients had elevated fasting GLP-1 (29 vs 16 pg/mL, p=0.048) and GIP (37 vs 5 pmol/L, p=0.048). GLP-1 strongly correlated with perfectionism (r=0.768, p=0.001) independent of BMI.

Elm, Sofia; Petersson, Suzanne; Carlsson, Martin; Brudin, Lars; Marteinsdottir, Ina; Wanby, Pär ·

RPEP-15147 · 2026

GLP-1 and SGLT2 Drugs Reduce Mortality After Heart Valve Replacement (TAVR)

Post-TAVR: GLP-1 RA decreased all-cause mortality; SGLT2i decreased arrhythmia; combined GLP-1 RA + SGLT2i decreased mortality, MI, acute HF, and arrhythmia compared to untreated matched controls.

Fahoury, Alan M; Kamel-Abusalha, Louie; Didier, Alexander J; Wunderly, Kevin; Sarrouj, Sami; Issa, Rochell; Afifi, Ahmed; Gupta, Rajesh ·

RPEP-15148 · 2026

Peptide-Enhanced Heart Valve Scaffold Promotes Healing Under Diabetic Conditions

The SS-31/REDV/PBNP-functionalized scaffold reduced EC apoptosis, promoted EC proliferation and migration under hyperglycemia, suppressed macrophage inflammatory cytokines, and accelerated endothelialization in diabetic rabbit vascular models.

Fan, Yang; Xingzhuang, Du; Zhiyu, Zhao; Gaoyang, Guo; Yunbing, Wang ·

RPEP-15149 · 2026

RVG Peptide Outperforms CPP for Brain Delivery of siRNA-Loaded Extracellular Vesicles

RVG and CPP.16 modifications redirect sEVs into transcytotic rather than endocytic pathways. RVG-sEVs use clathrin-mediated endocytosis for superior BBB penetration and more efficient siRNA delivery to neurons and astrocytes in vivo.

Fang, Jingwen; Zhang, Lingzhu; Wang, Ye; Chen, Menghan; He, Yanqiu; Zhang, Chen-Yu; Zhang, Yujing; Jiang, Xiaohong; Li, Jing ·

RPEP-15150 · 2026

Lung Peptide PTHrP1-34 Drives Pulmonary Fibrosis and May Be a New Treatment Target

PTHrP1-34 was elevated in IPF lung tissue and bronchoalveolar lavage, activated fibroblasts and ECM production, and targeting the PTHrP1-34/PTH1R axis with antibodies, peptides, or gene silencing attenuated pulmonary fibrosis in mice.

Fang, Xue-Quan; Lim, Suha; Lee, Yoon-Mi; Lim, Chang-Hoon; Kim, Han-Byeol; Joo, Jeong Ho; Han, Sang-Woo; Kim, Seohyun; Kim, Ji Hyung; Na, Kwon Joong; Park, Samina; Kim, Young Tae; Park, Jimyung; Park, Jooho; Lee, Jeong Seok; Shin, Eun-Young; Kim, Eung-Gook; Shin, Hyun-Woo; Lim, Ji-Hong ·

RPEP-15151 · 2026

Peptide-Based Nanomotor System Captures Bacterial Toxins to Treat Drug-Resistant Colitis

Immobilized peptide-based nanomotors coated with RBC membranes captured endotoxins structure-independently via electrostatic interactions, prevented pro-inflammatory cytokine release, and managed bacterial colitis through endotoxin sequestration.

Fang, Yuxin; Yan, Jianming; Yu, Tongxin; An, Zichuan; Lv, Kaikai; Xue, Chenyu; Yu, Hongyang; Dong, Na; Shan, Anshan ·

RPEP-15152 · 2026

Gut Peptide-Satiety Signaling Is Disrupted in Spinal Cord Injury, Contributing to Overeating

SCI patients showed GI dysmotility, exaggerated glycemic excursions, weakened ghrelin-hunger and GLP-1-fullness coupling (p<0.05), a shift toward glucose-driven satiety signals, and enhanced insulin-GLP-1 association.

Farkas, Gary J; Cunningham, Paige M; Berg, Arthur S; Jimsheleishvili, George; Mendez, Armando J; Gater, David R; Nash, Mark S; Rolls, Barbara J ·

RPEP-15153 · 2026

GLP-1 Therapies for Addiction: Where the Evidence Stands and What's Needed

Preclinical evidence consistently supports GLP-1 RA efficacy across alcohol, nicotine, opioid, and psychostimulant use disorders. Observational human data suggest benefits. RCTs are emerging with promising but mixed signals. No increased psychopathology risk.

Farokhnia, Mehdi; Leggio, Lorenzo ·

RPEP-15154 · 2026

Sea Cucumber Peptides Restore Immune Balance in Chemotherapy-Suppressed Mice

SCPH oral treatment restored Th1/Th2 balance in CYP-immunosuppressed mice, upregulating IFNG, TBX21, IgG, IgM and downregulating IL4, GATA3, IL-10, IgA, sIgA, with improved splenic architecture.

Farooqui, Nabeel Ahmed; Rehman, Ata Ur; Khan, Asif Iqbal; Ullah, Hidayat; Ali, Muhsin; Yousuf, Waleed; Alioui, Yamina; Atta, Aamna; Abusidu, Mohammad; Saleh, Bilal; Ghaleb, Eslam; Li, Yanxia; Xin, Yi; Siddiqui, Nimra Zafar; Wang, Liang ·

RPEP-15156 · 2026

High-Purity Melittin Isolation Method Achieves 99% Recovery with 6-Month Stability

One-step RP-HPLC achieved 99.05% recovery and 98.44% purity for melittin, with 6-month accelerated stability testing (ICH conditions) demonstrating superior stability of purified melittin over crude venom.

Fatahian, Farnaz; Rezadoost, Hassan; Golestan, Seyed Mohammad Jafar Seyed; Behboudi, Hossein; Catani, Martina; Cavazzini, Alberto; Ghassempour, Alireza ·

RPEP-15157 · 2026

AI Designs Peptide-Like Cancer Drugs That Outperform Existing Inhibitors for Endometrial Cancer Targets

AI-generated peptide-like molecules showed superior binding to EC targets: AKT1 (-11.53 kcal/mol vs reference -8.50), CTNNB1 (-12.33 kcal/mol), ESR1 (-11.05 kcal/mol), with RMSD <2.5 Å in MD simulations and favorable WaterSwap binding energies (-34 to -37 kcal/mol).

Fatima, Israr; Rehman, Abdur; Wang, Zhibo; Ur Rehman, Hafeez; Aldaw, Mohamed; Warraich, Dawood Ahmed; Meng, Yuxuan; Li, Yan; Liao, Mingzhi ·

RPEP-15158 · 2026

Ghrelin Responses Are Blunted in Obese Children Born Small, Linked to Insulin Sensitivity

Obese SGA children showed lower fasting/post-load ghrelin and smaller suppression. Fasting ghrelin and its suppression were independently associated with HOMA-IR, while post-load ghrelin was determined by post-load insulin.

Fedorczak, Anna; Smalczewska, Paula; Grobelna, Magdalena; Szałapska, Małgorzata; Zygmunt, Arkadiusz; Stawerska, Renata ·

RPEP-15159 · 2026

New Peptide Drug Loses Weight Like GLP-1 Drugs but Through Energy Burning, Not Appetite Loss

NN501 reduced body weight comparably to GLP-1 RAs but with only modest food intake reduction, primarily through increased energy expenditure and fatty-acid oxidation, with more gradual weight regain and no compensatory hyperphagia after discontinuation.

Feetham, Claire H; Groom, Sam; John, Linu M; Christoffersen, Berit Ostergaard; Collabolletta, Valeria; Lyons, David; Adamson, Antony; Lundh, Sofia; Gerstenberg, Marina Kjærgaard; Tang-Christensen, Mads; Conde-Frieboes, Kilian W; Secher, Anna; Kruse Hansen, Ann Maria; Luckman, Simon M ·

RPEP-15160 · 2026

GLP-1 Drugs Reduce Brain Aneurysm Rupture Risk by 34% in Diabetic Patients

GLP-1RA use associated with lower SAH risk (HR 0.66, 95% CI 0.50-0.87) and mortality (HR 0.63, 95% CI 0.52-0.76) in matched diabetic patients with intracranial aneurysms over 5 years, confirmed in untreated aneurysm subgroup.

Feghali, James; Ruchika, Fnu; Horowitz, Melanie A; Xu, Risheng; Jackson, Christopher M; Caplan, Justin M; Huang, Judy; Tamargo, Rafael J; Gonzalez, L Fernando ·

RPEP-15163 · 2026

Real-World Galcanezumab Reduces Migraine Days by 7 Per Month with Over 60% Responder Rate

At 1 month: MMD reduction -6.93 days, HIT reduction -7.96 points. Over 60% achieved ≥50% MMD/MHD reduction within 3 months. Effects gradually increased through 12 months. AE rates 25% (6 months) to 35% (12 months).

Fernández-Bravo-Rodrigo, Jaime; Pascual-Morena, Carlos; Saz-Lara, Alicia; Martínez-García, Irene; Lever-Megina, Carla Geovanna; Patiño-Cardona, Silvana; Flor-García, Amparo; Cavero-Redondo, Iván ·

RPEP-15164 · 2026

Stress Rapidly Rewires Brain VIP Signaling in Anxiety-Regulating Regions

Acute stress increased VIP 200% in CeA and 350% in MeA, with VPAC1/2 upregulation across limbic regions. Chronic stress upregulated VPAC1 in PVN (120%) and VPAC2 in CeA (280%) with slight VIP downregulation, revealing stress-duration-dependent plasticity.

Ferro, Federico; Fontebasso, Veronica; Basille-Dugay, Magali; Vaudry, David; Ebner, Karl ·

RPEP-15165 · 2026

Brain Stimulation Matches Semaglutide for Weight Loss at One Year in Diabetic Patients

At 12 months: rTMS -8.2 ± 1.0 kg, semaglutide 0.5 mg -5.7 ± 0.9 kg (not significantly different), SGLT2i -2.0 ± 0.7 kg (significantly less than both, p<0.01). rTMS and semaglutide showed progressive weight loss; SGLT2i showed regain after 6 months.

Ferrulli, Anna; Senesi, Pamela; Sonaglioni, Andrea; Cannavaro, Daniele; Massarini, Stefano; Macrì, Concetta; Cipponeri, Elisa; DeFronzo, Ralph A; Luzi, Livio ·

RPEP-15167 · 2026

Blocking Oxytocin Receptors Does Not Trigger Migraine Attacks in Clinical Trial

Atosiban did not increase migraine-like attacks vs placebo in women with migraine (30% vs 20%, p=0.75), healthy controls (0% vs 0%), or men with migraine (10% vs 15%, p>0.999). Vascular changes occurred in controls but not migraine patients.

Fitzek, Mira Pauline; Kleist, Paula; Handtmann, Cleo; Overeem, Lucas Hendrik; Hoehne, Carolin Luisa; Lange, Kristin Sophie; Angerhöfer, Cornelius; Salim, Yones; Ebert, Andreas D; Mattern, Nicole; Reuter, Uwe; Raffaelli, Bianca ·

RPEP-15168 · 2026

Self-Assembling Peptide Hydrogel Generates Insulin-Producing Cells from Dental Stem Cells

ECM-FEK9 peptide hydrogel adopted β-sheet nanofiber structure, maintained cell viability, and supported differentiation of hDPSCs into IPCs expressing PDX-1, Glut-2, and producing insulin within 10 days of 3D culture.

Flores-Ibarra, Brandhon F; Enríquez-Rodríguez, Andrea I; Robles-Pablos, Kimberly P; Rodas-Junco, Beatriz A; Argüelles-Monal, Waldo M; Silva-Gutiérrez, Luisa L; Pérez-González, Refugio; Patrón-Soberano, Olga A; Rochín-Wong, Carmen S; Castillo-Díaz, Luis A ·

RPEP-15169 · 2026

Calcium as a Key Signal Controlling GLP-1 Release from Gut Cells

Extracellular calcium triggers GLP-1 exocytosis from L-cells through CaSR and voltage-gated calcium channels, positioning calcium as an essential signaling ion in the gut-glucose endocrine axis.

Foamkom, Astrid-Ines; Abdelhady, Hosam G; Razzaque, Mohammed S ·

RPEP-15170 · 2026

GLP-1 Drugs Show Modest Weight Loss Benefit in PCOS — Evidence for Other Outcomes Remains Uncertain

GLP-1 RAs as add-on therapy reduced BMI by -1.38 kg/m² (95% CI -2.39 to -0.38; low certainty) in PCOS women. No significant differences for LDL, triglycerides. Insufficient evidence for glucose, insulin, hirsutism, menstrual regularity.

Forslund, Maria; Wändell, Per; Forsberg, Lisa; Österberg, Marie; Dagerhamn, Jessica; Wernersson, Emma; Kärrman Fredriksson, Maja; Ringborg, Anna; Lindén Hirschberg, Angelica ·

RPEP-15171 · 2026

GLP-1 Drugs in Pregnancy: Not Recommended but No Clear Harm Found in Human Studies

GLP-1 RAs are not recommended in pregnancy, but large human observational studies have not demonstrated significant independent risk of major congenital malformations after controlling for confounding maternal comorbidities.

Fotheringham, Penelope; McGee, Richard G; Chang, Ruby; Kennedy, Debra; Simmons, David ·

RPEP-15173 · 2026

Incretin Hormones May Address Cardiovascular Risk in Type 1 Diabetes

T1D involves dysfunctional GIP, GLP-1, and glucagon signaling that contributes to dysglycemia and cardiovascular risk, with semaglutide and tirzepatide emerging as potential therapeutic options targeting these specific metabolic deficits.

Frampton, Ruth; Hocking, Samantha; Snaith, Jennifer R; Greenfield, Jerry R ·

RPEP-15175 · 2026

Why Most Antimicrobial Peptides Fail Clinically — And What It Takes to Succeed

Most AMPs fail clinically due to pharmacokinetic limitations, dosing constraints, and indication selection rather than lack of antimicrobial activity, with AI-guided design improving discovery but not yet solving the in vitro-to-in vivo efficacy gap.

Fu, Qifu; Yan, Bohu; Xu, Jialin; Ding, Yuqi; Chen, Xiaojun; Wang, Yanan; Sun, Zhiliang; Li, Jiyun ·

RPEP-15176 · 2026

GLP-1 and Weight Loss Drugs: Effects on Sexual Function in Men and Women

GLP-1 RAs improve erectile function, testosterone, and sperm parameters in men. Tirzepatide case reports suggest potential sexual side effects. Setmelanotide demonstrates melanocortin pathway involvement in sexual function. Sexual outcomes are underrepresented as trial endpoints.

Fuentes-Mendoza, Jenyfer M; Concepción-Zavaleta, Marcio J; Mendoza-Godoy, Jeny J; Concepción-Urteaga, Luis; Paz-Ibarra, José; Coronado-Arroyo, Julia C ·

RPEP-15178 · 2026

CagriSema (Amylin + GLP-1) Achieves 11 kg More Weight Loss Than Semaglutide Alone

CagriSema vs comparators: additional -11 kg weight, -9.41 cm waist, -7.06 mmHg systolic BP. Cohen's d for weight: -1.38. GI adverse events 32% more frequent (RR 1.32). 4 RCTs, n=4,419.

Gadelmawla, Ahmed Farid; Hammad, Noha; Atta, Karim; Diaa, Ahmed; Abouzkaly, Fatma; Soni, Kriti; Kelkar, Raveena; Agrawal, Siddharth P; Ahmed, Raheel; Jain, Hritvik; Passey, Siddhant; Aronow, Wilbert S ·

RPEP-15179 · 2026

Three Antimicrobial Peptides Hidden in a Human Protein Kill Drug-Resistant Bacteria and Viruses

Three EPs from MMP-19 showed broad-spectrum antimicrobial activity (including MDR strains), antibiofilm, antiviral, LPS-neutralizing, and synergistic properties, with no resistance development and in vivo efficacy in a murine skin infection model.

Gaglione, Rosa; Schibeci, Martina; Piccolo, Erika; Culurciello, Rosanna; Zannella, Carla; Mensitieri, Francesca; Dal Piaz, Fabrizio; Cafaro, Valeria; De Filippis, Anna; Pizzo, Elio; Notomista, Eugenio; Torres, Marcelo D T; de la Fuente-Nunez, Cesar; Arciello, Angela ·

RPEP-15180 · 2026

Comprehensive Review of SGLT2i, GLP-1, and Dual/Triple Agonists for Diabesity

SGLT2i, GLP-1 RAs, and emerging dual/triple agonists offer complementary mechanisms for diabesity management, with clinical evidence supporting progressive pharmacological intensification.

Galasso, Martina; Caporusso, Mariangela; Volatile, Alessandra; Verde, Ludovica; Esposito, Katherine; Giorgino, Francesco; Perrini, Sebastio; Colao, Annamaria; Barrea, Luigi; Muscogiuri, Giovanna ·

RPEP-15181 · 2026

Fisheries Bycatch Yields Antimicrobial Peptides Active Against Drug-Resistant Bacteria

Proteomic analysis of fisheries bycatch identified novel antimicrobial peptides with broad-spectrum activity including against drug-resistant bacterial strains.

Galendi, Vicky Balesteros S Blumen; Coelho, Guilherme Rabelo; Murback, Letícia; Valenti, Wagner C; Camargo, Tavani Rocha; Franzolin, Marcia Regina; Pimenta, Daniel Carvalho; Ferreira, Rui Seabra ·

RPEP-15183 · 2026

How Tirzepatide Works: Dual GIP/GLP-1 Mechanism Across Diabetes, Obesity, and Heart Disease

Tirzepatide's dual GIP/GLP-1 receptor agonism provides comprehensive metabolic benefits across glycemic control, weight loss, cardiorenal protection, and lipid metabolism, with expanding indications to HFpEF and MASH.

Galindo, Rodolfo J; Cheng, Alice Y Y; Longuet, Christine; Ai, Minrong; Coskun, Tamer; Malik, Raleigh; Peleshok, Jennifer; Levine, Joshua A; Dunn, Julia P ·