1
|
Wang FF, Zhang Y, Zhao T, Feng PF, Lu Z, Zang SQ, Mak TCW. Photoluminescence Anisotropy in Eutectic Crystals of Polynuclear Lanthanide Complexes and Silver Clusters. Angew Chem Int Ed Engl 2023; 62:e202305693. [PMID: 37392153 DOI: 10.1002/anie.202305693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 06/29/2023] [Accepted: 06/30/2023] [Indexed: 07/03/2023]
Abstract
Anisotropy is an intrinsic property of crystalline materials. However, the photoluminescence anisotropy in eutectic crystals of organometallic complexes has remained unexplored. Herein, the eutectic of polynuclear lanthanide complexes and Ag clusters was prepared, and the crystal shows significant photoluminescence anisotropy. The polarization anisotropy of emission δ and degree of excitation polarization P are 2.62 and 0.53, respectively. The rare excitation polarization properties have been proved to be related to the regular arrangement of electric transition dipole moments of luminescent molecules in the crystal. Our design provides a reference for developing new photoluminescence anisotropy materials and expanding their applications.
Collapse
Affiliation(s)
- Fei-Fan Wang
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Yuchen Zhang
- College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials Institution, Nanjing University, Nanjing, 210023, P. R. China
| | - Teng Zhao
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Peng-Fei Feng
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Zhenda Lu
- College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials Institution, Nanjing University, Nanjing, 210023, P. R. China
| | - Shuang-Quan Zang
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Thomas C W Mak
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
- Department of Chemistry and Center of Novel Functional Molecules, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| |
Collapse
|
2
|
Zhai X, Feng PF, Song N, Zhao G, Liu Q, Liu LL, Tang M, Tang Y. Dual-functional ratiometric fluorescent sensor based on mixed-lanthanide metal-organic frameworks for detection of trace water and temperature. Inorg Chem Front 2022. [DOI: 10.1039/d2qi00093h] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The rapid-response ratiometric sensors are promising materials to detect trace water and temperature. However, the accurately visualized water assay in very narrow-range still remains a challenge. Herein, a novel dual-functional...
Collapse
|
3
|
Li FH, Guo SW, Zhan TW, Mo HR, Chen X, Wang H, Wei LL, Feng PF, Wu JG, Li P. Integrating network pharmacology and experimental evidence to decipher the cardioprotective mechanism of Yiqihuoxue decoction in rats after myocardial infarction. J Ethnopharmacol 2021; 279:114062. [PMID: 33771641 DOI: 10.1016/j.jep.2021.114062] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 03/16/2021] [Accepted: 03/18/2021] [Indexed: 05/15/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE "Qi deficiency and blood stasis" syndrome is one of the most common syndromes treated with Traditional Chinese Medicine among ischemic heart disease (IHD) patients in clinic. As a Chinese herbal formula with the function of tonifying Qi and activating blood, Yiqihuoxue Decoction (YQHX) has been frequently proven to be effective in the clinical treatment of IHD. AIM OF THE STUDY The cardioprotective mechanisms of YQHX in treating ischemic heart disease were investigated, with emphasis on the key targets and pathways. MATERIALS AND METHODS In the present study, the potential targets of compounds identified in YQHX were predicted using PharmMapper, Symmap, and STITCH databases, and a "herb-compound-target" network was constructed using Cytoscape. Subsequently, the GO and KEGG functional enrichment analyses were analyzed using the DAVID database. Furthermore, a protein-protein interaction network was constructed using STRING to obtain the key target information. Besides, we used a myocardial ischemia rat model to investigate the cardioprotective effects of YQHX. Transmission electron microscopy and Western blotting were used to observe apoptotic bodies and confirm protein expressions of key candidate targets, respectively. RESULTS Network pharmacology showed that a total of 141 potential targets were obtained from these databases. The functional analysis results revealed that the targets of YQHX were largely associated with apoptosis, and the PI3K-AKT and MAPK pathways might represent key functional pathways. The hub genes of network include ALB, TP53, AKT1, TNF, VEGFA, EGFR, MAPK1, CASP3, JUN, FN1, MMP9, and MAPK8. In vivo, YQHX significantly improved cardiac function and suppressed apoptosis in ischemic rat myocardium. Furthermore, YQHX could significantly upregulate Nrf2 and HO-1 expression, and inhibit JNK phosphorylation. CONCLUSIONS Based on network pharmacology and experimental evidence, this study proves that the cardioprotective effects and mechanisms of YQHX depend on multi-component, multi-target, and multi-pathway. In particular, YQHX exerts anti-apoptotic effects potentially by regulating the Nrf2/HO-1 and JNK-MAPK pathways.
Collapse
Affiliation(s)
- Fang-He Li
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 100029, PR China; The 3rd Affiliated Hospital, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Shu-Wen Guo
- Fangshan Hospital, Beijing University of Chinese Medicine, Beijing, 102400, PR China.
| | - Tian-Wei Zhan
- Science and Technology College of Jiangxi University of Traditional Chinese Medicine, Nanchang, 330000, PR China
| | - Han-Rong Mo
- Beijing Friendship Hospital, Capital Medical University, Beijing, 100029, PR China
| | - Xi Chen
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 100029, PR China
| | - Hui Wang
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 100029, PR China
| | - Lu-Lu Wei
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 100029, PR China
| | - Peng-Fei Feng
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 100029, PR China
| | - Jian-Gong Wu
- Department of Traditional Chinese Medicine, Peking University People's Hospital, Beijing, 100029, PR China
| | - Ping Li
- The 3rd Affiliated Hospital, Beijing University of Chinese Medicine, Beijing, 100029, China.
| |
Collapse
|
4
|
Feng PF, Kong MY, Yang YW, Su PR, Shan CF, Yang XX, Cao J, Liu WS, Feng W, Tang Y. Eu 2+/Eu 3+-Based Smart Duplicate Responsive Stimuli and Time-gated Nanohybrid for Optical Recording and Encryption. ACS Appl Mater Interfaces 2019; 11:1247-1253. [PMID: 30516048 DOI: 10.1021/acsami.8b17281] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
With the rapid development of information science, it is urgent that memory devices possessing high security, density, and desirable storage ability should be developed. In this work, a smart duplicate response of stimuli has been developed and a time-gate nanohybrid based on variable valence Eu2+/Eu3+ coencapsulated has been fabricated and acts as active material in the multilevel and multidimensional memory devices. The luminescence lifetime of Eu3+ in this nanohybrid gave a stimuli response due to which the energy level of the coordinated ligand could be modulated. Furthermore, by a simple sintering procedure, Eu3+ was partially in situ reduced to Eu2+ with a short lifetime in the system. And the in situ reduction ensured both Eu3+ and Eu2+ ions' uniform distribution in the nanohybrid and simultaneous response upon light excitation of variable valence Eu ions. Interestingly, Eu3+ revealed a prolonged lifetime because of the presence of an energy-transfer effect of Eu2+ → Eu3+. Such a nanohybrid had abundant luminescent properties, including the short lifetime of Eu2+, the energy transfer from the Eu2+ to Eu3+ ions, and the stimuli response of the Eu3+ lifetimes when exposed to acidic or basic vapor, thus giving birth to interesting recording and encryption performance in spatial-temporal dimensions. We believe that this research will point out a new direction for the future development of multilevel and multidimensional optical recording and encryption materials.
Collapse
Affiliation(s)
- Peng-Fei Feng
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , China
| | - Meng-Ya Kong
- Department of Chemistry , Fudan University , Shanghai 200438 , China
| | - Yi-Wei Yang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , China
| | - Ping-Ru Su
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , China
| | - Chang-Fu Shan
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , China
| | - Xiao-Xi Yang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , China
| | - Jing Cao
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , China
| | - Wei-Sheng Liu
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , China
| | - Wei Feng
- Department of Chemistry , Fudan University , Shanghai 200438 , China
| | - Yu Tang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , China
| |
Collapse
|
5
|
Du GL, Chen WY, Li XN, He R, Feng PF. Induction of MMP‑1 and ‑3 by cyclical mechanical stretch is mediated by IL‑6 in cultured fibroblasts of keratoconus. Mol Med Rep 2017; 15:3885-3892. [PMID: 28393195 DOI: 10.3892/mmr.2017.6433] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Accepted: 03/16/2017] [Indexed: 11/06/2022] Open
Abstract
In order to understand the effect of mechanical stretch on corneal extracellular matrix remodeling, human keratoconus fibroblasts (HKCFBs) were subjected to cyclic stretch in vitro and the expression of matrix metalloproteinases (MMPs), tissue inhibitor of metalloproteinases (TIMPs), and inflammatory cytokines were evaluated. HKCFBs were seeded into a flexible membrane base and subjected to a cyclic stretch regimen of 10% equibiaxial stretch at a stretching frequency of 1 Hz for 6 h using a Flexcell tension unit. An antibody directed against interleukin‑6 (IL‑6 Ab) was used to investigate the roles of IL‑6 on mechanical stretch mediated regulation of MMP in HKCFBs. Culture supernatants were assayed using an enzyme‑linked immunosorbent assay for MMP‑1 and ‑3, TIMP‑1 and ‑2, and IL‑6. Total RNA from the cells was extracted, and quantitative polymerase chain reaction was used to determine mRNA for MMP‑1 and ‑3, TIMP‑1 and ‑2, and IL‑6. In stretched cells, levels of MMP‑1 and ‑3 demonstrated an increase compared with unstretched cells, but levels of TIMP‑1, and ‑2 revealed a decrease. Mechanical stretch significantly increased the mRNA expression and protein synthesis of IL‑6 compared with unstretched cells. IL‑6 induced MMP‑1 and ‑3 expression, whereas no significant effects were observed in levels of TIMP‑1 and ‑2 compared with the untreated control groups. Additionally, the IL‑6 Ab markedly inhibited the stretch‑induced increase in MMP‑1 and ‑3 in culture supernatants in a dose‑dependent manner. No significant differences in TIMP‑1 and ‑2 protein levels were detected between stretched cells treated with IL‑6 Ab and stretched cells without IL‑6 Ab treatment. These results indicate that cyclical mechanical stretch augments IL‑6 production and MMP expression, and reduces levels of TIMP in HKCFBs. Thus, it is suggested that IL‑6 mediates the stretch‑induced MMP expression.
Collapse
Affiliation(s)
- Gen-Lai Du
- Shanxi Key Lab of Material Strength & Structural Impact, Taiyuan University of Technology, Taiyuan, Shanxi 030024, P.R. China
| | - Wei-Yi Chen
- Shanxi Key Lab of Material Strength & Structural Impact, Taiyuan University of Technology, Taiyuan, Shanxi 030024, P.R. China
| | - Xiao-Na Li
- Shanxi Key Lab of Material Strength & Structural Impact, Taiyuan University of Technology, Taiyuan, Shanxi 030024, P.R. China
| | - Rui He
- Department of Excimer Laser, Shanxi Eye Hospital, Taiyuan, Shanxi 030002, P.R. China
| | - Peng-Fei Feng
- Shanxi Key Lab of Material Strength & Structural Impact, Taiyuan University of Technology, Taiyuan, Shanxi 030024, P.R. China
| |
Collapse
|
6
|
Feng PF, Liu Y, Qin NP. [Effect of sanwu hypotensive decoction on blood pressure and lymphokine activated killer cell in patient of primary hypertension and spontaneously hypotensive rats]. Zhongguo Zhong Xi Yi Jie He Za Zhi 2001; 21:342-5. [PMID: 12577417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
OBJECTIVE To investigate the effect of Sanwu hypotensive decoction (SWHD) on blood pressure (BP) and lymphokine activated killer cell (LAK) and possible mechanism. METHODS Thirty mild hypertension patients were treated with SWHD for 8 weeks, the levels of BP, proliferative ability and activity of LAK cell, SOD-like substance expressed by LAK cell and its radical scavenger ability before and after treatment were observed using randomized, single blinded, self-control, paralled assay, and compared with other 30 patients treated with captopril for control. In an experimental study, the vasodilatory response of thoracic aortic ring to acetylcholine and nitroglycerine, and effect of LAK cell, standard reagent of SOD, SWHD on the response were observed and compared in spontaneously hypertensive rats (SHR) and Wistar Kyoto rats (WKR). RESULTS After SWHD treatment, along with lowering of BP, the proliferative ability, activity SOD-like substance expressed by LAK cell and its radical scavenger ability increased significantly. CONCLUSION SWHD is not only an effective hypotensive agent, but also an immunoregulator.
Collapse
Affiliation(s)
- P F Feng
- Department of Cardiology, Affiliated Hospital of Zhejiang TCM College, Hangzhou 310006
| | | | | |
Collapse
|
7
|
Feng PF, Qin NP, Qiao Q. [Clinical and experimental study of improving left ventricular diastolic function by total saponins of panax notoginseng]. Zhongguo Zhong Xi Yi Jie He Za Zhi 1997; 17:714-7. [PMID: 10322816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
OBJECTIVE To investigate the effect of total saponins of Panax Notoginseng (TSPNS) on left ventricular diastolic function in patients with essential hypertension (EH) and possible mechanism. METHODS Left ventricular diastolic function (peak E, peak A, E/A, A area fraction, E area fraction), left ventricular muscle mass index (LV-MI), intraerythrocytic calcium and calcium pump activity on erythrocytes membrance of 30 patients with EH before and after the combined treatment of captopril and TSPNS were measured. Captopril was used singly on 30 patients above mentioned that were also studied as self-control. Observation of TSPNS and normal saline was used on a matched control in treating SHR rats. WKY rats of similar age were also studied as normal control. RESULTS Left ventricular diastolic function were improved markedly by TSPNS. The activity of calcium pump on membrance of sarcoplasmic reticulum were increased and the myocardial intracellular calcium were decreased and the left ventricular muscle mass were reduced after treatment of TSPNS. The calcium and calcium pump of erythrocyte showed marked simple correlation with myocardial cell. CONCLUSIONS The TSPNS could improve myocardial relaxation function due to enhancing calcium pump activity and inhibiting intracellular calcium overload and lightening left ventricular muscle mass.
Collapse
Affiliation(s)
- P F Feng
- Affiliated Hospital of Zhejiang Traditional Chinese Medical College, Hangzhou
| | | | | |
Collapse
|
8
|
Bergmann BM, Gilliland MA, Feng PF, Russell DR, Shaw P, Wright M, Rechtschaffen A, Alverdy JC. Are physiological effects of sleep deprivation in the rat mediated by bacterial invasion? Sleep 1996; 19:554-62. [PMID: 8899934 DOI: 10.1093/sleep/19.7.554] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Recent reports have indicated that rats subjected to total sleep deprivation (TSD) by the disk-over-water method and sacrificed when death appeared imminent showed aerobic bacteria in their blood. Yoked control rats did not. Extrapolating from these results, it has been suggested that the late body temperature declines and eventual deaths of TSD rats are caused by septicemia, and that other, earlier-appearing effects of TSD-including weight loss, increased energy expenditure, and regulation of temperature at a higher level-might be mediated by impaired host defenses against bacterial invasion. Three measures of aerobic bacterial invasion were used to evaluate these hypotheses: bacteremia, bacterial colonization in major organs of filtration (liver, kidney, and mesenteric lymph nodes), and adherence of bacteria to the cecal wall. Experiment 1 showed nonsignificant trends toward more bacterial invasion in 4-day TSD rats compared to yoked control rats and no relationship between the bacterial indicators and the early TSD effects. Experiment 2 showed that the elimination of aerobic bacterial infection by antibiotic treatment did not prevent the early TSD effects in 4-day TSD rats. Experiment 3 showed that the elimination of aerobic bacterial invasion in TSD rats did not eliminate the late temperature decline or the progression towards death. The results showed no significant evidence of aerobic bacterial invasion early in TSD and no indication that the major effects of TSD were dependent upon aerobic bacterial invasion.
Collapse
Affiliation(s)
- B M Bergmann
- Department of Psychiatry, University of Chicago, Illinois, USA
| | | | | | | | | | | | | | | |
Collapse
|
9
|
Abstract
Chronic total sleep deprivation (TSD) of rats by the disk-over-water method reliably produces initial increases and subsequent decreases in waking intraperitoneal (Tip) and hypothalamic (Thy) temperatures, progressive increases in energy expenditure, skin lesions on the tail and plantar surfaces, debilitated appearance, and eventual death. We investigated the possible role of the preoptic/anterior hypothalamus (POAH) in the mediation of the TSD effects by comparing these effects in POAH-lesioned and unlesioned rats. Bilateral POAH lesions sufficient in size to impair homeothermic responses to changes in ambient temperature did not produce TSD-like temperature changes under baseline ambient temperatures of 28-29 degrees C, implying that the thermoregulatory changes produced by TSD do not result from impairment of the lesioned area. However, the possibility remains that the TSD effects are mediated by damage to POAH areas that were not lesioned. During TSD, lesioned and unlesioned rats showed similar progressive increases in energy expenditure, but the lesioned rats showed earlier, steeper, and eventually greater declines in Tip and Thy. This result suggests that in unlesioned rats the POAH may counter-regulate against, and thereby attenuate, the reduction in heat retention caused by TSD. This failure of regulation in lesioned rats is consistent with their impaired response to ambient temperature change and implies that, in unlesioned rats, some POAH thermoregulatory mechanisms continue to function normally during TSD. Lesioned rats did not show the characteristic TSD-induced early increases in Tip and Thy. This result could imply either that heat retention was so compromised that body temperatures did not rise in spite of a TSD-induced increases in thermoregulatory setpoint, or that the setpoint increase in unlesioned rats is POAH-mediated. Notwithstanding the greater Tip and Thy declines in lesioned rats, they survived the TSD procedure longer than the unlesioned rats, thus supporting previous indications that death did not result from hypothermia.
Collapse
Affiliation(s)
- P F Feng
- Department of Psychiatry, University of Chicago, IL 60637, USA
| | | | | |
Collapse
|
10
|
Feng PF, Shaw P, Bergmann BM, Obermeyer W, Tsai LL, Zenko CE, Rechtschaffen A. Sleep deprivation in the rat: XX. Differences in wake and sleep temperatures during recovery. Sleep 1995; 18:797-804. [PMID: 8638074 DOI: 10.1093/sleep/18.9.797] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
We examined the relationship between wake and sleep peritoneal temperature (T(ip)) during recovery from short-term (five rats, 5 days of deprivation) and long-term (nine rats, 14-21 days) total sleep deprivation (TSD). Mammalian body temperature normally declines in the passage from wakefulness to sleep. Recovery from TSD featured reductions of the typical wake-sleep T(ip) differences. Previous studies from our laboratory have shown that chronic TSD in the rat produces a progressive rise in energy production and an initial rise in wake T(ip), followed by a later fall in T(ip) to below baseline that becomes more acute as death becomes imminent. During recovery from both short-term TSD (wherein pre-recovery wake T(ip) was still above baseline) and long-term TSD (wherein pre-recovery wake T(ip) had fallen to below baseline), wake T(ip) and energy production quickly returned towards baseline. On the first recovery day, both short- and long-term TSD rats showed mean non-rapid eye movement (NREM) and paradoxical sleep (PS) T(ip) values that were slightly, although not significantly, above mean wake T(ip). In short-term TSD rats, wake-NREM and wake-PS T(ip) differences were reduced from baseline significantly (p < 0.0025) on the first recovery day and nonsignificantly on the remaining three recovery days. In long-term TSD rats, wake-NREM and wake-PS T(ip) differences were significantly (p < 0.001) reduced from baseline on the first four recovery day block. On the last four recovery day block, wake-sleep T(ip) differences tended to return toward baseline. Hypothalamic wake-sleep temperature differences in long-term TSD rats showed similar reductions during recovery. The reduction of wake-sleep temperature differences in recovery does not support either energy reduction or cooling functions for sleep.
Collapse
Affiliation(s)
- P F Feng
- Department of Psychiatry, University of Chicago, Illinois, USA
| | | | | | | | | | | | | |
Collapse
|
11
|
Feng PF, Liu LM, Shen YY. [Effect of shenmai injection on sIL-2R NK and LAK cells in patients with advanced carcinoma]. Zhongguo Zhong Xi Yi Jie He Za Zhi 1995; 15:87-9. [PMID: 7787398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Serum interleukin-2 receptor (sIL-2R) level activities of natural killer cell (NK) and lymphokine activated killer cell (LAK) cells were determined in 60 patients with advanced carcinoma (AC) before and after treatment with Shenmai injection (SMI), 40 healthy persons were taken as non-carcinoma control (NC). The results showed that: Serum sIL-2R level in AC were much higher than those in NC (P < 0.05) and activities of NK and LAK cells in AC were much lower than those in NC (P < 0.05) before treatment. There was no significant difference among gastric cancer, colonic carcinoma and lung cancer (P < 0.05). After treatment with SMI we also found that the level of sIL-2R in all patients were obviously lower (P < 0.05) while the activity of NK and LAK cells were significantly higher than that prior treatment (P < 0.05). Linear correlation was not found between sIL-2R and NK, LAK cells. These data suggested that the immune function was compromised in AC. The mechanism of the inhibitory effect of SMI on carcinoma might be related to the activity of biological response modifier.
Collapse
Affiliation(s)
- P F Feng
- Zhejiang Provincial Hospital of TCM, Hangzhou
| | | | | |
Collapse
|
12
|
Tao CM, Huang TY, Feng PF, Wu CH, Liu YC, Li HF, Wang CC. A preliminary study on hepatitis B vaccine. Chin Med J (Engl) 1978; 4:101-10. [PMID: 95926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
|