IDENTIFICATION AND USE: Tetrahydrozoline hydrochloride, an imidazoline derivative, is applied topically to the eye for self-medication to temporarily relieve congestion, itching, and minor irritation, and to control hyperemia in patients with superficial corneal vascularity. Ocular decongestants are ineffective in the treatment of delayed hypersensitivity reactions such as contact dermatoconjunctivitis. The vasoconstrictor effect of tetrahydrozoline may be used during some ocular diagnostic procedures, but some clinicians prefer phenylephrine to tetrahydrozoline for this use. HUMAN STUDIES: Serious adverse events requiring hospitalization have been reported in pediatric patients following accidental ingestion of nonprescription ophthalmic solutions or nasal sprays containing imidazoline derivatives including tetrahydrozoline. Between 1985 and October 2012, 96 cases of accidental ingestion were reported in children 1 month to 5 years of age. The amount of drug ingested ranged from 0.6-45 mL. While no deaths were reported, more than half of these cases reported serious adverse events requiring hospitalization, including nausea, vomiting, lethargy, tachycardia, decreased respiration, bradycardia, hypotension, hypertension, sedation, somnolence, mydriasis, stupor, hypothermia, drooling, and coma. ANIMAL STUDIES: In dogs, signs of intoxication may include vomiting, bradycardia, cardiac arrhythmias, poor capillary refill time, hypotension or hypertension, panting, increased upper respiratory sounds, depression, weakness, nervousness, hyperactivity, or shaking. These signs appear within 30 min to 4 hr postexposure. In general, imidazoline decongestant exposure may affect the GI, cardiopulmonary, and nervous systems.
BACKGROUND: We report two cases of drug-facilitated sexual assault which presented with CNS depression rendering the victims vulnerable to sexual assault and unable to recall the events surrounding the crimes. In each tetrahydrozoline (THZ) was quantified. CASE REPORT: Case #1 ingested an unknown amount of eye drops containing THZ mixed with alcoholic beverages. Case #1 presented to the emergency department (ED) approximately 7 hr after reportedly being sexually assaulted and was without symptoms in the ED. Earlier reports from individuals who saw her indicated the victim to be "heavily intoxicated". Case #2 also ingested an unknown amount of eye drops containing THZ mixed with alcoholic beverages. Case #2 presented to an ED without symptoms approximately 23 hr after reportedly being sexually assaulted. Urine obtained from both cases was assessed for THZ concentrations using gas-chromatography-mass spectrometry. CASE DISCUSSION: Case #1 had a 0.15 g% (by weight by volume) urine ethanol concentration and a urinary THZ concentration of 1.481 ng/mL, approximately 7h after ingestion. Case #2 was negative for ethanol but had a urine THZ concentration of 108 ng/mL at 23 hr post-ingestion. Few case reports have been published documenting the use of THZ to facilitate sexual assault. CONCLUSION: We report two cases of drug-facilitated sexual assault involving the use of THZ where alcoholic beverages were concomitantly consumed. This is the first paper to our knowledge which discusses pharmacology of THZ ingestion and the significance of alcohol being present.
/SRP:/ Immediate first aid: Ensure that adequate decontamination has been carried out. If patient is not breathing, start artificial respiration, preferably with a demand valve resuscitator, bag-valve-mask device, or pocket mask, as trained. Perform CPR if necessary. Immediately flush contaminated eyes with gently flowing water. Do not induce vomiting. If vomiting occurs, lean patient forward or place on left side (head-down position, if possible) to maintain an open airway and prevent aspiration. Keep patient quiet and maintain normal body temperature. Obtain medical attention. /Poisons A and B/
/SRP:/ Basic treatment: Establish a patent airway (oropharyngeal or nasopharyngeal airway, if needed). Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if needed. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for pulmonary edema and treat if necessary ... . Monitor for shock and treat if necessary ... . Anticipate seizures and treat if necessary ... . For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with 0.9% saline (NS) during transport ... . Do not use emetics. For ingestion, rinse mouth and administer 5 mL/kg up to 200 mL of water for dilution if the patient can swallow, has a strong gag reflex, and does not drool ... . Cover skin burns with dry sterile dressings after decontamination ... . /Poisons A and B/
/SRP:/ Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious, has severe pulmonary edema, or is in severe respiratory distress. Positive-pressure ventilation techniques with a bag valve mask device may be beneficial. Consider drug therapy for pulmonary edema ... . Consider administering a beta agonist such as albuterol for severe bronchospasm ... . Monitor cardiac rhythm and treat arrhythmias as necessary ... . Start IV administration of D5W TKO /SRP: "To keep open", minimal flow rate/. Use 0.9% saline (NS) or lactated Ringer's (LR) if signs of hypovolemia are present. For hypotension with signs of hypovolemia, administer fluid cautiously. Watch for signs of fluid overload ... . Treat seizures with diazepam (Valium) or lorazepam (Ativan) ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Poisons A and B/
When consumed orally, tetryzoline is rapidly absorbed from the gastrointestinal tract and can cross the blood-brain barrier. Following ocular administration of 0.05% tetryzoline, Cmax ranged from 0.068 to 0.380 ng/mL.
BACKGROUND: Major symptoms can occur from tetrahydrozoline (THZ) overdoses in young children, requiring intensive care management. We report three cases that presented with CNS depression and cardiovascular effects where serum concentrations were performed. CASE REPORT: Case 1 ingested an unknown amount of eye drops containing THZ, resulting in altered mental status, bradycardia, hypothermia, and hypotension. Cases 2 and 3 ingested 7.5 mL of eye drops containing THZ. Case 2 presented to the emergency department (ED) without symptoms but became lethargic and bradycardic 90 min after ingestion. By contrast, Case 3 became lethargic 15 min after ingestion and required intubation on arrival to the ED. All children were admitted to ICU for observation and improved within 24 hr of ingestion. Urine obtained for drug screening was positive for THZ. Blood was obtained to assess level using gas-chromatography mass-spectrometry (GC-MS). CASE DISCUSSION: Case 1 had plasma levels of 51.4 and 23.6 ng/mL at 7 and 12 hr, respectively, after ingestion, revealing a half-life of 4.4 hr. Numerous case reports have been published documenting the dangers of ingesting these topical over-the-counter (OTC) products. However, human PK data are not available to help in our understanding of THZ toxicokinetics and disposition in humans after ingestion. CONCLUSION: We report three pediatric cases after ingestion of THZ where plasma concentrations were obtained with a calculated half-life of 4.4 hr in one case.
Disclosed herein are substituted indole cysteinyl leukotriene receptor modulators of Formula I, process of preparation thereof, pharmaceutical compositions thereof, and methods of use thereof.
The present invention relates to compounds of formula (I), to the process for preparing such compounds and to their use in the treatment of a pathological condition or disease susceptible to amelioration by CRTh2 antagonist activity.
[EN] NEW CRTh2 ANTAGONISTS<br/>[FR] NOUVEAUX ANTAGONISTES DE CRTH2
申请人:ALMIRALL SA
公开号:WO2013010881A1
公开(公告)日:2013-01-24
The present invention relates to compounds of formula (I), to the process for preparing such compounds and to their use in the treatment of a pathological condition or disease susceptible to amelioration by CRTh2 antagonist activity.
The present invention relates to novel compounds which are inhibitors of CRAC channel activity. This invention also relates to pharmaceutical compositions containing them, process for their preparation and their use in therapy.
CONJUGATE-BASED ANTIFUNGAL AND ANTIBACTERIAL PRODRUGS
申请人:Bapat Abhijit S.
公开号:US20140364595A1
公开(公告)日:2014-12-11
The invention provides conjugate-based antifungal or antibacterial prodrugs formed by coupling at least one anti-fungal agent or antibacterial agent with at least one linker and/or carrier. The prodrugs are of formula: (i) (AFA)
m
-X-(L)
n
; (ii) [(AFA)
m′
-X]
p
-L; (iii) AFA-[X-(L)
n′
]
q
; or (iv) (AFA)
m″
-X, wherein: AFA is an antifungal agent or an antibacterial agent; L is a carrier; X is a linker; m ranges from 1 to 10; n ranges from 2 to 10; m′ is 1 to 10; p is 1 to 10; n′ is 1 to 10; and q is 1 to 10, provided that q′ and n are not both 1; and m″ is 1 to 10. The invention also provides nanoparticles comprising the conjugate-based prodrugs. Additionally, the invention also provides non-conjugated antifungal and antibacterial agents in the form of nanoparticles.
该发明提供了由至少一种抗真菌剂或抗菌剂与至少一种连接剂和/或载体偶联形成的基于共轭的抗真菌或抗菌前药。这些前药的公式为:(i) (AFA)
m
-X-(L)
n
; (ii) [(AFA)
m′
-X]
p
-L; (iii) AFA-[X-(L)
n′
]
q
; 或 (iv) (AFA)
m″
-X,其中:AFA是抗真菌剂或抗菌剂;L是载体;X是连接剂;m范围从1到10;n范围从2到10;m′为1到10;p为1到10;n′为1到10;q为1到10,前提是q'和n不同时为1;m″为1到10。该发明还提供了包含基于共轭的前药的纳米粒子。此外,该发明还提供了以纳米粒子形式的非共轭抗真菌和抗菌剂。