The document discusses several renal hormones and their roles in regulating homeostasis. It describes the renin-angiotensin system and its components in the juxtaglomerular apparatus, including renin-producing juxtaglomerular cells and NaCl-sensing macula densa cells. It also discusses other renal hormones like atrial natriuretic peptide, aldosterone, erythropoietin, and vitamin D, as well as local autocrine/paracrine factors such as prostaglandins. The kidneys play a key role in regulating blood pressure and electrolyte balance through the production and response to these hormones.
I am a medical student. I have one friend who is persuing his MBBS degree in Taishan Medical UNiversity. I got these notes from him.
These notes are by Dr. Bikesh, He is a famous lecturer of TMU.
These notes have helped me a lot and i also watch his lecture videos , which are great; highly simple and huge content.
I am uploading with Renal physiology. If you want some other topics i would upload for you.
"Let the Knowledge be spread" Dr. Bikesh
Introduction
HORMONES OF ADRENAL CORTEX
MINERALOCORTICOIDS
Aldosterone
Life-saving Hormone
Actions of aldosterone
Aldosterone escape or escape phenomenon
Regulation of aldosterone secretion
Renin–angiotensin system
Applied
Tubular reabsorption (The Guyton and Hall physiology)Maryam Fida
It is the second step of urine formation.
It is defined as;
“ The process by which water and other substances are transported by renal tubules back to blood is called Tubular Reabsorption”.
Tubular reabsorption is highly selective.
Some substances like glucose and amino acids are completely absorbed from tubules. So, the urinary excretion is zero.
Ions such as Na+, Cl-, HCO3- are highly absorbed but rate of absorption and excretion varies, according to body needs.
Materials Not Reabsorbed
Nitrogenous waste products
Urea
Uric acid
Creatinine
Excess water
Ergography by Pandian M. Tutor in Dept, of Physiology, DYPMCKOP, This PPT for...Pandian M
Introduction
Principle
Requirements
Procedure
Factors that affect performance
Factors that affect FATIGUE
In Mosso’s ergography, fatigue is affected by
Factors that causes muscle fatigue
Calculation
Precautions
Observation
Discussion
I am a medical student. I have one friend who is persuing his MBBS degree in Taishan Medical UNiversity. I got these notes from him.
These notes are by Dr. Bikesh, He is a famous lecturer of TMU.
These notes have helped me a lot and i also watch his lecture videos , which are great; highly simple and huge content.
I am uploading with Renal physiology. If you want some other topics i would upload for you.
"Let the Knowledge be spread" Dr. Bikesh
Introduction
HORMONES OF ADRENAL CORTEX
MINERALOCORTICOIDS
Aldosterone
Life-saving Hormone
Actions of aldosterone
Aldosterone escape or escape phenomenon
Regulation of aldosterone secretion
Renin–angiotensin system
Applied
Tubular reabsorption (The Guyton and Hall physiology)Maryam Fida
It is the second step of urine formation.
It is defined as;
“ The process by which water and other substances are transported by renal tubules back to blood is called Tubular Reabsorption”.
Tubular reabsorption is highly selective.
Some substances like glucose and amino acids are completely absorbed from tubules. So, the urinary excretion is zero.
Ions such as Na+, Cl-, HCO3- are highly absorbed but rate of absorption and excretion varies, according to body needs.
Materials Not Reabsorbed
Nitrogenous waste products
Urea
Uric acid
Creatinine
Excess water
Ergography by Pandian M. Tutor in Dept, of Physiology, DYPMCKOP, This PPT for...Pandian M
Introduction
Principle
Requirements
Procedure
Factors that affect performance
Factors that affect FATIGUE
In Mosso’s ergography, fatigue is affected by
Factors that causes muscle fatigue
Calculation
Precautions
Observation
Discussion
Effect of Aqueous Administration of White Grub and Waste Extract on the Level...BRNSS Publication Hub
Introduction: The liver plays a major role in the regulation of carbohydrate metabolism, as it uses glucose as a fuel and kidneys are to excrete metabolic waste products as well as to maintain water, pH, electrolyte balance, production of calcitriol, and hemopoietin. Aim: This study aims to investigate the effect of the administration of white grub and waste on liver and kidney indices on diabetic rats. Materials and Methods: The rats were induced with diabetes by alloxanization and treated with the extracts of white grub and waste for 2 weeks. A total of 25 rats used, were randomly distributed into five groups (G1-G5) each with five rats. G1 served as normal control. G2-G5 served as diabetic control. At the end of the 1st week of extract administration, two animals from each group were randomly selected and sacrificed. At the end of the 2nd week, the remaining three animals from each group were also sacrificed and serum was collected for the determination of liver function indices (serum alkaline phosphatase [ALP], alanine aminotransferase [ALT], aspartate aminotransferase [AST] total bilirubin [TB], direct bilirubin [DB], total protein [TP], albumin [ALB], and globulin [GLB]) and kidney function parameters (urea, creatinine, and electrolyte [sodium “Na,” potassium “K,” bicarbonate “HCO3,” and chloride “Cl”]). Results: After the 1st week, the extract-treated group (G4 and G5) showed significant reductions of ALP, ALT, AST, TP, GLB, and ALB while TB and DB have normal value compared to diabetic untreated group and for renal function (G4 and G5) showed significantly lower levels of urea, Na, K, HCO3, creatinine, and Cl. After the 2nd week, the extract-treated group showed significant reductions of ALP, ALT, AST, DB, TP, ALB, and TB with significant increased levels of GLB and TP compared to diabetic untreated group (G2). G4 (extract treated) showed significantly (P < 0.05) lower levels of urea, Na, Cl, HCO3, and creatinine and with significant increased K levels compared to G2. G5 also extract-treated group indicates significant lower levels of urea, Cl, Na, and HCO3 and higher levels of creatinine and K compared to G2. Conclusion: These results suggest that the administration of aqueous extract of white grub and waste did not have any adverse effect on the liver and kidney functions in diabetic rats. The extracts have positive effect which showed that G4 (treated with whole white grub [WG]) is more effective compared to G5 (treated with WG waste).
A test in which blood or urine samples are checked for the amounts of certain substances released by the kidneys. A higher- or lower-than-normal amount of a substance can be a sign that the kidneys are not working the way they should. Also called kidney function test.
'Lo último en obesidad'. Este es el título del Simposio Internacional que organizamos en la Fundación Ramón Areces los días 1 y 2 de diciembre de 2015. En colaboración con la Fundación General CSIC, reunió a algunos de los mayores expertos en la materia para analizar cómo reducir este grave problema de salud pública.
Anti ulcer drugs and their Advance pharmacology ||
Anti-ulcer drugs are medications used to prevent and treat ulcers in the stomach and upper part of the small intestine (duodenal ulcers). These ulcers are often caused by an imbalance between stomach acid and the mucosal lining, which protects the stomach lining.
||Scope: Overview of various classes of anti-ulcer drugs, their mechanisms of action, indications, side effects, and clinical considerations.
Ethanol (CH3CH2OH), or beverage alcohol, is a two-carbon alcohol
that is rapidly distributed in the body and brain. Ethanol alters many
neurochemical systems and has rewarding and addictive properties. It
is the oldest recreational drug and likely contributes to more morbidity,
mortality, and public health costs than all illicit drugs combined. The
5th edition of the Diagnostic and Statistical Manual of Mental Disorders
(DSM-5) integrates alcohol abuse and alcohol dependence into a single
disorder called alcohol use disorder (AUD), with mild, moderate,
and severe subclassifications (American Psychiatric Association, 2013).
In the DSM-5, all types of substance abuse and dependence have been
combined into a single substance use disorder (SUD) on a continuum
from mild to severe. A diagnosis of AUD requires that at least two of
the 11 DSM-5 behaviors be present within a 12-month period (mild
AUD: 2–3 criteria; moderate AUD: 4–5 criteria; severe AUD: 6–11 criteria).
The four main behavioral effects of AUD are impaired control over
drinking, negative social consequences, risky use, and altered physiological
effects (tolerance, withdrawal). This chapter presents an overview
of the prevalence and harmful consequences of AUD in the U.S.,
the systemic nature of the disease, neurocircuitry and stages of AUD,
comorbidities, fetal alcohol spectrum disorders, genetic risk factors, and
pharmacotherapies for AUD.
MANAGEMENT OF ATRIOVENTRICULAR CONDUCTION BLOCK.pdfJim Jacob Roy
Cardiac conduction defects can occur due to various causes.
Atrioventricular conduction blocks ( AV blocks ) are classified into 3 types.
This document describes the acute management of AV block.
These simplified slides by Dr. Sidra Arshad present an overview of the non-respiratory functions of the respiratory tract.
Learning objectives:
1. Enlist the non-respiratory functions of the respiratory tract
2. Briefly explain how these functions are carried out
3. Discuss the significance of dead space
4. Differentiate between minute ventilation and alveolar ventilation
5. Describe the cough and sneeze reflexes
Study Resources:
1. Chapter 39, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 34, Ganong’s Review of Medical Physiology, 26th edition
3. Chapter 17, Human Physiology by Lauralee Sherwood, 9th edition
4. Non-respiratory functions of the lungs https://academic.oup.com/bjaed/article/13/3/98/278874
The prostate is an exocrine gland of the male mammalian reproductive system
It is a walnut-sized gland that forms part of the male reproductive system and is located in front of the rectum and just below the urinary bladder
Function is to store and secrete a clear, slightly alkaline fluid that constitutes 10-30% of the volume of the seminal fluid that along with the spermatozoa, constitutes semen
A healthy human prostate measures (4cm-vertical, by 3cm-horizontal, 2cm ant-post ).
It surrounds the urethra just below the urinary bladder. It has anterior, median, posterior and two lateral lobes
It’s work is regulated by androgens which are responsible for male sex characteristics
Generalised disease of the prostate due to hormonal derangement which leads to non malignant enlargement of the gland (increase in the number of epithelial cells and stromal tissue)to cause compression of the urethra leading to symptoms (LUTS
Couples presenting to the infertility clinic- Do they really have infertility...Sujoy Dasgupta
Dr Sujoy Dasgupta presented the study on "Couples presenting to the infertility clinic- Do they really have infertility? – The unexplored stories of non-consummation" in the 13th Congress of the Asia Pacific Initiative on Reproduction (ASPIRE 2024) at Manila on 24 May, 2024.
Pulmonary Thromboembolism - etilogy, types, medical- Surgical and nursing man...VarunMahajani
Disruption of blood supply to lung alveoli due to blockage of one or more pulmonary blood vessels is called as Pulmonary thromboembolism. In this presentation we will discuss its causes, types and its management in depth.
Flu Vaccine Alert in Bangalore Karnatakaaddon Scans
As flu season approaches, health officials in Bangalore, Karnataka, are urging residents to get their flu vaccinations. The seasonal flu, while common, can lead to severe health complications, particularly for vulnerable populations such as young children, the elderly, and those with underlying health conditions.
Dr. Vidisha Kumari, a leading epidemiologist in Bangalore, emphasizes the importance of getting vaccinated. "The flu vaccine is our best defense against the influenza virus. It not only protects individuals but also helps prevent the spread of the virus in our communities," he says.
This year, the flu season is expected to coincide with a potential increase in other respiratory illnesses. The Karnataka Health Department has launched an awareness campaign highlighting the significance of flu vaccinations. They have set up multiple vaccination centers across Bangalore, making it convenient for residents to receive their shots.
To encourage widespread vaccination, the government is also collaborating with local schools, workplaces, and community centers to facilitate vaccination drives. Special attention is being given to ensuring that the vaccine is accessible to all, including marginalized communities who may have limited access to healthcare.
Residents are reminded that the flu vaccine is safe and effective. Common side effects are mild and may include soreness at the injection site, mild fever, or muscle aches. These side effects are generally short-lived and far less severe than the flu itself.
Healthcare providers are also stressing the importance of continuing COVID-19 precautions. Wearing masks, practicing good hand hygiene, and maintaining social distancing are still crucial, especially in crowded places.
Protect yourself and your loved ones by getting vaccinated. Together, we can help keep Bangalore healthy and safe this flu season. For more information on vaccination centers and schedules, residents can visit the Karnataka Health Department’s official website or follow their social media pages.
Stay informed, stay safe, and get your flu shot today!
Title: Sense of Taste
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the structure and function of taste buds.
Describe the relationship between the taste threshold and taste index of common substances.
Explain the chemical basis and signal transduction of taste perception for each type of primary taste sensation.
Recognize different abnormalities of taste perception and their causes.
Key Topics:
Significance of Taste Sensation:
Differentiation between pleasant and harmful food
Influence on behavior
Selection of food based on metabolic needs
Receptors of Taste:
Taste buds on the tongue
Influence of sense of smell, texture of food, and pain stimulation (e.g., by pepper)
Primary and Secondary Taste Sensations:
Primary taste sensations: Sweet, Sour, Salty, Bitter, Umami
Chemical basis and signal transduction mechanisms for each taste
Taste Threshold and Index:
Taste threshold values for Sweet (sucrose), Salty (NaCl), Sour (HCl), and Bitter (Quinine)
Taste index relationship: Inversely proportional to taste threshold
Taste Blindness:
Inability to taste certain substances, particularly thiourea compounds
Example: Phenylthiocarbamide
Structure and Function of Taste Buds:
Composition: Epithelial cells, Sustentacular/Supporting cells, Taste cells, Basal cells
Features: Taste pores, Taste hairs/microvilli, and Taste nerve fibers
Location of Taste Buds:
Found in papillae of the tongue (Fungiform, Circumvallate, Foliate)
Also present on the palate, tonsillar pillars, epiglottis, and proximal esophagus
Mechanism of Taste Stimulation:
Interaction of taste substances with receptors on microvilli
Signal transduction pathways for Umami, Sweet, Bitter, Sour, and Salty tastes
Taste Sensitivity and Adaptation:
Decrease in sensitivity with age
Rapid adaptation of taste sensation
Role of Saliva in Taste:
Dissolution of tastants to reach receptors
Washing away the stimulus
Taste Preferences and Aversions:
Mechanisms behind taste preference and aversion
Influence of receptors and neural pathways
Impact of Sensory Nerve Damage:
Degeneration of taste buds if the sensory nerve fiber is cut
Abnormalities of Taste Detection:
Conditions: Ageusia, Hypogeusia, Dysgeusia (parageusia)
Causes: Nerve damage, neurological disorders, infections, poor oral hygiene, adverse drug effects, deficiencies, aging, tobacco use, altered neurotransmitter levels
Neurotransmitters and Taste Threshold:
Effects of serotonin (5-HT) and norepinephrine (NE) on taste sensitivity
Supertasters:
25% of the population with heightened sensitivity to taste, especially bitterness
Increased number of fungiform papillae
Report Back from SGO 2024: What’s the Latest in Cervical Cancer?bkling
Are you curious about what’s new in cervical cancer research or unsure what the findings mean? Join Dr. Emily Ko, a gynecologic oncologist at Penn Medicine, to learn about the latest updates from the Society of Gynecologic Oncology (SGO) 2024 Annual Meeting on Women’s Cancer. Dr. Ko will discuss what the research presented at the conference means for you and answer your questions about the new developments.
Lung Cancer: Artificial Intelligence, Synergetics, Complex System Analysis, S...Oleg Kshivets
RESULTS: Overall life span (LS) was 2252.1±1742.5 days and cumulative 5-year survival (5YS) reached 73.2%, 10 years – 64.8%, 20 years – 42.5%. 513 LCP lived more than 5 years (LS=3124.6±1525.6 days), 148 LCP – more than 10 years (LS=5054.4±1504.1 days).199 LCP died because of LC (LS=562.7±374.5 days). 5YS of LCP after bi/lobectomies was significantly superior in comparison with LCP after pneumonectomies (78.1% vs.63.7%, P=0.00001 by log-rank test). AT significantly improved 5YS (66.3% vs. 34.8%) (P=0.00000 by log-rank test) only for LCP with N1-2. Cox modeling displayed that 5YS of LCP significantly depended on: phase transition (PT) early-invasive LC in terms of synergetics, PT N0—N12, cell ratio factors (ratio between cancer cells- CC and blood cells subpopulations), G1-3, histology, glucose, AT, blood cell circuit, prothrombin index, heparin tolerance, recalcification time (P=0.000-0.038). Neural networks, genetic algorithm selection and bootstrap simulation revealed relationships between 5YS and PT early-invasive LC (rank=1), PT N0—N12 (rank=2), thrombocytes/CC (3), erythrocytes/CC (4), eosinophils/CC (5), healthy cells/CC (6), lymphocytes/CC (7), segmented neutrophils/CC (8), stick neutrophils/CC (9), monocytes/CC (10); leucocytes/CC (11). Correct prediction of 5YS was 100% by neural networks computing (area under ROC curve=1.0; error=0.0).
CONCLUSIONS: 5YS of LCP after radical procedures significantly depended on: 1) PT early-invasive cancer; 2) PT N0--N12; 3) cell ratio factors; 4) blood cell circuit; 5) biochemical factors; 6) hemostasis system; 7) AT; 8) LC characteristics; 9) LC cell dynamics; 10) surgery type: lobectomy/pneumonectomy; 11) anthropometric data. Optimal diagnosis and treatment strategies for LC are: 1) screening and early detection of LC; 2) availability of experienced thoracic surgeons because of complexity of radical procedures; 3) aggressive en block surgery and adequate lymph node dissection for completeness; 4) precise prediction; 5) adjuvant chemoimmunoradiotherapy for LCP with unfavorable prognosis.
2. OBJECTIVES.
INTRODUCTION
COMPONENTS OF RAS
PATHOPHYSIOLOGY OF RAS
COMPONENTS OF NATRIURETIC PEPTIDE SYSTEM
PATHOPHYSIOLOGY OF NATRIURETIC PEPTIDE
SYSTEM
KALLIKREIN-KININ SYSTEM
ADRENOMEDULLIN AND ENDOTHELINS
ERYTHROPOIETIN
3. INTRODUCTION
The kidney -- Essential role in the
maintenance of life in higher organisms,
Not only through regulating the blood
pressure and body fluid homeostasis
and clearing the wastes,
But also by acting as a major
Endocrine organ.
Friday, June 19, 2020
5. TARGET ORGAN
The kidney serves as an
important endocrine target
organ for a number of
hormones, thereby
controlling
the extracellular fluid volume,
electrolyte balance,
Acid-base balance,
and blood pressure.
Angiotensin
and
Aldosterone
Friday, June 19, 2020
6. “Local hormones,”
The kidney
is a major organ for
the production and
action of various
“local hormones,” or
autocrine/paracrine
regulators,
such as
Prostaglandins
(PGs),
Adrenomedullin
(AM),
and
Endothelins (ETs).
Friday, June 19, 2020
7. Renin Angiotensin System
(RAS)
Major componants
Juxta-glomerular
Apparatus.
Collection of
specialised cells
located near to
glomerulus.
Friday, June 19, 2020
10. CHARACTERISTIC FEATURES
Well developed
Golgi appartus,
Endoplasmic reticulum &
abundunt mitochondria &
Ribosomes.
Renin is stored in the
secretory granules of JG
cells and, therefore, these
are also called Granular
cells
Friday, June 19, 2020
11. TYPE OF RECEPTOR
Baroreceptors
(tension receptors)
Respond to changes in
the transmural
pressure gradient
between the afferent
arterioles and the
interstitium.
Friday, June 19, 2020
12. RESPONSE – 2 TYPES
Densely innervated by the sympathetic
nerve
fibres and release their renin content in
response to the Sympathetic discharge.
Vascular volume receptors, they
monitor renal perfusion pressure and are
stimulated by hypovolaemia or decreased
renal perfusion pressure.
Friday, June 19, 2020
13. MACULA DENSA CELLS
Specialised renal
tubular epithelial cells
of a short segment of
the thick ascending limb
of loop of Henle which
passes
between the afferent
and efferent
arterioles.
Friday, June 19, 2020
14. Characteristic features
They are not well adapted for reabsorption.
They are not innervated.
These cells are in direct contact with the
mesangial cells
and in close contact with the JG cells.
They act as chemoreceptors and are stimulated
By decreased NaCl concentration and thereby
causing
Friday, June 19, 2020
15. Mesangial cells.
Interstitial cells of the JG apparatus.
They are in contact with both the macula densa cells (on
one side) and JG cells (on the other side).
Relay the signals from
macula densa to the granular cells after modulating the
signals.
In this way, a decreased intraluminal Na+ load, Cl– load, or
both in the region of macula densa stimulates the JG cells
to secrete renin
Friday, June 19, 2020
16. REGULATION OF GFR
Auto regulation
Hormonal regulation
Nervous regulation
17. GFR DEPENDS ON DIAMETERS OF
AFFERENT AND EFFERENT ARTERIOLES
GFR GFR
Glomerulus
Afferent arteriole Efferent arteriole
Glomerular filtrate
Aff. Art. dilatation
Eff. Art. dilatationEff. Art.
constriction
Aff. Art.
constriction
Prostaglandins,
Kinins, Dopamine
(low dose), ANP,
NO
Angiotensin II
(low dose)
Angiotensin II
blockade
Ang II (high dose),
Noradrenaline (Symp
nerves), Endothelin, ADH,
Prost. Blockade)
18. AUTO REGULATION
Mechanism of Auto-regulation
1 Myogenic mechanism ( Respond to
change in arterial pressure).
2 Tubuloglomerular feedback
mechanism ( Respond to change in NaCl
concentration of tubular fluid.
20. HORMONAL REGULATION
HORMONES
Vasoconstrictors
1 NE
2 Angiotensin II
3 Endothelin
VASODIALATORS
1 PG
2 NO
3 ANP
4 Bradykinin
STIMULUS GFR
ECV
ECV
ECV
ECV, stretch NC
stretch, Ach, histamine
ECV
PG, ACE
21. NERVOUS REGULATION
Afferent & efferent – sympathetic from T4-L2
through splanchnic nerves.
Normally sympathetic tone minimum.
Mild to moderate stimulation – mild effect.
Strong acute stimulation – Fall in RBF due to
constriction of both afferent & efferent arterioles.
22. KALLIKREINS – KININ SYSTEM
The kallikrein-kinin system consists of four
major components: kininogen,
kallikreins,
kinins,
and kininases
Friday, June 19, 2020
24. 1,25- (OH)2 vitamin D3,
Final activation of vitamin D to the active
hormone calcitriol takes place in
the kidneys – 1-hydroxylation of
25- hydroxycholecalciferol
1,25- dihydroxycholecalciferol.
Friday, June 19, 2020
26. 1,25- (OH)2 vitamin D3,
Calcitriol stimulates the small
intestine for protein synthesis allowing
absorption of Ca2+and phosphates.
This ensures the availability of
Ca2+ and phosphate for bone growth.
Calcitriol simultaneously activates
osteoblasts to synthesize collagen.
Friday, June 19, 2020
28. ERYTHROPOIETIN
Erythropoietin is a
peptide hormone
which regulates
Erythropoiesis.
Structure and function
Erythropoietin is
a Glycoprotein contai
ning 165 amino acids.
Friday, June 19, 2020
29. Actions
Receptors are present on the membranes
of red blood cell precursors.
Binding of the hormone reduces
Apoptosis of these cells – multiple cells
survive and can therefore complete their
development into mature erythrocytes.
Friday, June 19, 2020
31. Synthesis and inactivation
In adults, approximately 90 % of
erythropoietin is synthesized in the
kidneys (interstitial cells) , the remaining
amount in the liver (perivenous
hepatocytes) .
Friday, June 19, 2020
32. Synthesis and inactivation
The liver plays a key role in the production
of erythropoietin during the fetal period.
But in adulthood, the liver is no longer able
to compensate for a potential decrease in
production in the kidneys.
Friday, June 19, 2020
33. CLINICAL CORRELATIONS:
For most people in end-stage renal
failure, anemia with erythropoietin
deficiency occurs.
Doctors can administer recombinant
erythropoietin to these patients.
Friday, June 19, 2020
34. DOPING DRUG
Erythropoietin is also
abused as doping
substance – especially
in endurance athletics
(cycling) .
Friday, June 19, 2020
35. STIMULUS FOR
PRODUCTION.
Decrease in partial pressure of oxygen in
blood flowing through the organs.
Also supported by androgens &
catecholamines.
Friday, June 19, 2020