Penelope E. Fitzgerald

Corner North Terrace And George Street
Adelaide, SA 5005, Australia

Last Updated: 09/26/2026

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Found 16 publications

Effects of combined intraduodenal administration of lauric acid and L-tryptophan on postprandial plasma glucose, glucoregulatory hormones and gastric emptying in type 2 diabetes: a double-blind, randomised, crossover study.

Effects of combined intraduodenal administration of lauric acid and L-tryptophan on postprandial plasma glucose, glucoregulatory hormones and gastric emptying in type 2 diabetes: a double-blind, randomised, crossover study.

Journal: Diabetologia

Published: August 04, 2025

Dose-related Effects of Calcium to Enhance the Effects of L-tryptophan on Gut Hormones and Energy Intake in Obesity.

Dose-related Effects of Calcium to Enhance the Effects of L-tryptophan on Gut Hormones and Energy Intake in Obesity.

Journal: The Journal of clinical endocrinology and metabolism

Published: November 02, 2024

Dose-related effects of intraduodenal quinine on plasma glucose, glucoregulatory hormones and gastric emptying of a nutrient drink, and energy intake, in men with type 2 diabetes: a double-blind, randomised, crossover study.

Dose-related effects of intraduodenal quinine on plasma glucose, glucoregulatory hormones and gastric emptying of a nutrient drink, and energy intake, in men with type 2 diabetes: a double-blind, randomised, crossover study.

Journal: Diabetologia

Published: September 09, 2024

The herbal preparation, STW5-II, reduces proximal gastric tone and stimulates antral pressures in healthy humans.

The herbal preparation, STW5-II, reduces proximal gastric tone and stimulates antral pressures in healthy humans.

Journal: Neurogastroenterology and motility

Published: November 29, 2023

Effects of intraduodenal or intragastric administration of a bitter hop extract (Humulus lupulus L.), on upper gut motility, gut hormone secretion and energy intake in healthy-weight men.

Effects of intraduodenal or intragastric administration of a bitter hop extract (Humulus lupulus L.), on upper gut motility, gut hormone secretion and energy intake in healthy-weight men.

Journal: Appetite

Published: November 30, 2022

Comparative Effects of Intragastric and Intraduodenal Administration of Quinine on the Plasma Glucose Response to a Mixed-Nutrient Drink in Healthy Men: Relations with Glucoregulatory Hormones and Gastric Emptying.

Comparative Effects of Intragastric and Intraduodenal Administration of Quinine on the Plasma Glucose Response to a Mixed-Nutrient Drink in Healthy Men: Relations with Glucoregulatory Hormones and Gastric Emptying.

Journal: The Journal of nutrition

Published: October 09, 2020

Intragastric administration of leucine and isoleucine does not reduce the glycaemic response to, or slow gastric emptying of, a carbohydrate-containing drink in type 2 diabetes.

Intragastric administration of leucine and isoleucine does not reduce the glycaemic response to, or slow gastric emptying of, a carbohydrate-containing drink in type 2 diabetes.

Journal: Diabetes research and clinical practice

Published: August 20, 2020

Effects of L-Phenylalanine on Energy Intake and Glycaemia-Impacts on Appetite Perceptions, Gastrointestinal Hormones and Gastric Emptying in Healthy Males.

Effects of L-Phenylalanine on Energy Intake and Glycaemia-Impacts on Appetite Perceptions, Gastrointestinal Hormones and Gastric Emptying in Healthy Males.

Journal: Nutrients

Published: May 28, 2020

Effects of intraduodenal coadministration of lauric acid and leucine on gut motility, plasma cholecystokinin, and energy intake in healthy men.

Effects of intraduodenal coadministration of lauric acid and leucine on gut motility, plasma cholecystokinin, and energy intake in healthy men.

Journal: American journal of physiology. Regulatory, integrative and comparative physiology

Published: March 12, 2020

Intragastric administration of the bitter tastant quinine lowers the glycemic response to a nutrient drink without slowing gastric emptying in healthy men.

Intragastric administration of the bitter tastant quinine lowers the glycemic response to a nutrient drink without slowing gastric emptying in healthy men.

Journal: American journal of physiology. Regulatory, integrative and comparative physiology

Published: November 28, 2019

Effects of Duodenal Infusion of Lauric Acid and L-Tryptophan, Alone and Combined, on Fasting Glucose, Insulin and Glucagon in Healthy Men.

Effects of Duodenal Infusion of Lauric Acid and L-Tryptophan, Alone and Combined, on Fasting Glucose, Insulin and Glucagon in Healthy Men.

Journal: Nutrients

Published: September 25, 2019

Effects of Intraduodenal Infusion of the Bitter Tastant, Quinine, on Antropyloroduodenal Motility, Plasma Cholecystokinin, and Energy Intake in Healthy Men.

Effects of Intraduodenal Infusion of the Bitter Tastant, Quinine, on Antropyloroduodenal Motility, Plasma Cholecystokinin, and Energy Intake in Healthy Men.

Journal: Journal of neurogastroenterology and motility

Published: February 14, 2019

Showing 1-12 of 16

Last Updated: 09/26/2026