Urinary prothrombin fragment 1 （UPTFl） is a potent inhibitor of urinary stone formation. UPTF1 exerts such inhibitory effect by effective 7-carboxylation in which vitamin K epoxide reductase complex subunit 1 （VKO...Urinary prothrombin fragment 1 （UPTFl） is a potent inhibitor of urinary stone formation. UPTF1 exerts such inhibitory effect by effective 7-carboxylation in which vitamin K epoxide reductase complex subunit 1 （VKORC1）, the rate-limiting enzyme, is involved. This study examined the correlation between VKORC1 expression and calcium oxalate urolithiasis. The renal cortex samples were obtained from patients undergoing nephrectomy and then divided into 3 groups： urolithiasis group, control group A [hydronephrosis-without-stone （HWS） group], control group B （normal control group）, The localization and expression of VKORC1 in renal tissues were determined by using immunohistochemistry, immunofluorescence microscopy, Western blotting and SYBR Green I real-time reverse-transcription PCR. The rapid amplification of cDNA ends （RACE） were conducted to obtain the 3＇- and 5＇-untranslated region （UTR） of VKORC1. The results showed that VKORC1 was located in the cytoplasm of renal tubular epithelial cells. The expression of VKORC1 in the uro- lithiasis group was significantly lower than that in the other two control groups （P〈0.05）. Moreover, the 3＇- and 5＇-UTR sequence of the VKORC1 gene was successfully cloned. No insertion or deletion was found in the 3＇- and 5＇-UTR. However, a 171-bp new base sequence was discovered in the up- stream of 5＇-UTR end in the urolithiasis group. It was concluded that the decreased expression of VKORC 1 may contribute to the development of calcium oxalate urolithiasis in the kidney.展开更多
BACKGROUND Vitamin K1(phytomenadione)is a fat-soluble naturally occurring vitamin that is widely used to treat certain coagulation disorders.Adverse cutaneous reactions to vitamin K1 can occur;however,owing to its low...BACKGROUND Vitamin K1(phytomenadione)is a fat-soluble naturally occurring vitamin that is widely used to treat certain coagulation disorders.Adverse cutaneous reactions to vitamin K1 can occur;however,owing to its low incidence and considerable variability in presentation and morphology,its diagnosis can be easily overlooked.Managing these reactions may be challenging for patients and clinicians.Therefore,reviewing the adverse cutaneous reactions to vitamin K1 is important.CASE SUMMARY Here we report the case of a 50-year-old woman with no pre-existing hepatic disease who developed a cutaneous allergic reaction to subcutaneous vitamin K1 that presented as localized eczematous plaques at the vitamin K1 injection site.The eruption developed within 5 d of the injection and persisted for 32 mo despite treatment with topical and intralesional steroids.Eczema was diagnosed based on the results of the pathological examination,immunohistochemical staining,and a skin biopsy.The patient was advised to take herbal medicines orally twice daily.After treatment and follow-up,the patient’s eczematous urticarial plaques improved and her condition stabilized.CONCLUSION Here we present the first case of a cutaneous allergic reaction to subcutaneous vitamin K1 that was successfully treated with Chinese medicine.展开更多
A high performance liquid chromatographic method for the simultaneous determination of four fat soluble vitamins: retinol (vitamin A), cholecalciferol(vitamin D), tocopherol(vitamin E) and phylloquinone(vitamin K_1) i...A high performance liquid chromatographic method for the simultaneous determination of four fat soluble vitamins: retinol (vitamin A), cholecalciferol(vitamin D), tocopherol(vitamin E) and phylloquinone(vitamin K_1) in fortified milk powders and egg yolk has been developed. The method requires enzymatic hydrolysis of lipid component of the sample as a pretreatment. Several factors which influence the enzymatic hydrolysis were studied-Separation was achieved using μ-Bondapak C-18 column(3.9×300mm), 98% methanol as mobile phase, a double channel detection was selected; vitamins D_3 E_1 K_1 were detected by UV spectrophotometry (265 nm) first, then vitamin A by fluorometry (EX 325nm, EM 480mm). The retention times of vitamin A_1 D_3, E and K_1 4.87, 9.00, 10.58 and 15.45 min respectively. Detection limit were 0.64, 0.25, 0.50 and 0.07 ng; and the recoveries were 90.5%～103.6% 90.0%～95.6%, 91.7%～98.8%, 91.5%～98.6%, respectively. The vitamins A, D_0, E, K_1 contents in foods were determined satisfactorily.展开更多
This experiment was conducted in order to verify the role of Vitamin K1 as a cell growth inhibitor on the U937 cell line. This experiment was performed in two parts—one with a lesser concentration of Vitamin K1, and ...This experiment was conducted in order to verify the role of Vitamin K1 as a cell growth inhibitor on the U937 cell line. This experiment was performed in two parts—one with a lesser concentration of Vitamin K1, and the other with a range of concentrations from low-to-high. Through the remaining number of U937 cells, as well as cell areas, it was concluded that the presence of Vitamin K1 reduces the number of cancer cells. It was also concluded that as Vitamin K1 concentration increases, so does the frequency and effects of apoptosis.展开更多
Vit K1为维生素类药,是临床常用药物,除有止血作用外,还有解痉止咳和止痛作用,可缓解大血管痉挛、腹绞痛、内脏平滑肌绞痛与胆绞痛和缓解癌肿引起的剧烈疼痛。可引起面部潮红、出汗、支气管痉挛、心动过速、低血压等,曾有快速静脉推注...Vit K1为维生素类药,是临床常用药物,除有止血作用外,还有解痉止咳和止痛作用,可缓解大血管痉挛、腹绞痛、内脏平滑肌绞痛与胆绞痛和缓解癌肿引起的剧烈疼痛。可引起面部潮红、出汗、支气管痉挛、心动过速、低血压等,曾有快速静脉推注致死的报道。也偶有过敏性休克的报道,静脉推注时应控制注药速度,同时密切观察病情变化,出现异常,及时处理。展开更多
Pelvic pain is one of the most common symptoms in gynecologic outpatients. Primary dysmenorrhea, acute or chronic pelvic inflammatory disease, endometriosis, post-operational pelvic adhesion, blood stagnation of pelvi...Pelvic pain is one of the most common symptoms in gynecologic outpatients. Primary dysmenorrhea, acute or chronic pelvic inflammatory disease, endometriosis, post-operational pelvic adhesion, blood stagnation of pelvic vein, etc. , are mentioned as the often encountered causes of pelvic pain. It has been reported in the recent ten or more years that intramuscular injection of vitamin K3 (Vit K3) could relieve pain induced by smooth muscle spasm. In order to evaluate the effect of Vit K3 administered by acupoint injection in relieving pelvic pain, 180 patients were treated and observed from April 1997 to April 1999 in our hospital, and good therapeutic effect was obtained. It was reported as follows.展开更多
基金supported by a grant from the National Natural Science Foundation of China(No.30901482)
文摘Urinary prothrombin fragment 1 （UPTFl） is a potent inhibitor of urinary stone formation. UPTF1 exerts such inhibitory effect by effective 7-carboxylation in which vitamin K epoxide reductase complex subunit 1 （VKORC1）, the rate-limiting enzyme, is involved. This study examined the correlation between VKORC1 expression and calcium oxalate urolithiasis. The renal cortex samples were obtained from patients undergoing nephrectomy and then divided into 3 groups： urolithiasis group, control group A [hydronephrosis-without-stone （HWS） group], control group B （normal control group）, The localization and expression of VKORC1 in renal tissues were determined by using immunohistochemistry, immunofluorescence microscopy, Western blotting and SYBR Green I real-time reverse-transcription PCR. The rapid amplification of cDNA ends （RACE） were conducted to obtain the 3＇- and 5＇-untranslated region （UTR） of VKORC1. The results showed that VKORC1 was located in the cytoplasm of renal tubular epithelial cells. The expression of VKORC1 in the uro- lithiasis group was significantly lower than that in the other two control groups （P〈0.05）. Moreover, the 3＇- and 5＇-UTR sequence of the VKORC1 gene was successfully cloned. No insertion or deletion was found in the 3＇- and 5＇-UTR. However, a 171-bp new base sequence was discovered in the up- stream of 5＇-UTR end in the urolithiasis group. It was concluded that the decreased expression of VKORC 1 may contribute to the development of calcium oxalate urolithiasis in the kidney.
文摘BACKGROUND Vitamin K1(phytomenadione)is a fat-soluble naturally occurring vitamin that is widely used to treat certain coagulation disorders.Adverse cutaneous reactions to vitamin K1 can occur;however,owing to its low incidence and considerable variability in presentation and morphology,its diagnosis can be easily overlooked.Managing these reactions may be challenging for patients and clinicians.Therefore,reviewing the adverse cutaneous reactions to vitamin K1 is important.CASE SUMMARY Here we report the case of a 50-year-old woman with no pre-existing hepatic disease who developed a cutaneous allergic reaction to subcutaneous vitamin K1 that presented as localized eczematous plaques at the vitamin K1 injection site.The eruption developed within 5 d of the injection and persisted for 32 mo despite treatment with topical and intralesional steroids.Eczema was diagnosed based on the results of the pathological examination,immunohistochemical staining,and a skin biopsy.The patient was advised to take herbal medicines orally twice daily.After treatment and follow-up,the patient’s eczematous urticarial plaques improved and her condition stabilized.CONCLUSION Here we present the first case of a cutaneous allergic reaction to subcutaneous vitamin K1 that was successfully treated with Chinese medicine.
文摘A high performance liquid chromatographic method for the simultaneous determination of four fat soluble vitamins: retinol (vitamin A), cholecalciferol(vitamin D), tocopherol(vitamin E) and phylloquinone(vitamin K_1) in fortified milk powders and egg yolk has been developed. The method requires enzymatic hydrolysis of lipid component of the sample as a pretreatment. Several factors which influence the enzymatic hydrolysis were studied-Separation was achieved using μ-Bondapak C-18 column(3.9×300mm), 98% methanol as mobile phase, a double channel detection was selected; vitamins D_3 E_1 K_1 were detected by UV spectrophotometry (265 nm) first, then vitamin A by fluorometry (EX 325nm, EM 480mm). The retention times of vitamin A_1 D_3, E and K_1 4.87, 9.00, 10.58 and 15.45 min respectively. Detection limit were 0.64, 0.25, 0.50 and 0.07 ng; and the recoveries were 90.5%～103.6% 90.0%～95.6%, 91.7%～98.8%, 91.5%～98.6%, respectively. The vitamins A, D_0, E, K_1 contents in foods were determined satisfactorily.
文摘This experiment was conducted in order to verify the role of Vitamin K1 as a cell growth inhibitor on the U937 cell line. This experiment was performed in two parts—one with a lesser concentration of Vitamin K1, and the other with a range of concentrations from low-to-high. Through the remaining number of U937 cells, as well as cell areas, it was concluded that the presence of Vitamin K1 reduces the number of cancer cells. It was also concluded that as Vitamin K1 concentration increases, so does the frequency and effects of apoptosis.
文摘Pelvic pain is one of the most common symptoms in gynecologic outpatients. Primary dysmenorrhea, acute or chronic pelvic inflammatory disease, endometriosis, post-operational pelvic adhesion, blood stagnation of pelvic vein, etc. , are mentioned as the often encountered causes of pelvic pain. It has been reported in the recent ten or more years that intramuscular injection of vitamin K3 (Vit K3) could relieve pain induced by smooth muscle spasm. In order to evaluate the effect of Vit K3 administered by acupoint injection in relieving pelvic pain, 180 patients were treated and observed from April 1997 to April 1999 in our hospital, and good therapeutic effect was obtained. It was reported as follows.
